Bump minor version for master after 4.1 branchpoint

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2018-11-02 00:53:07 +01:00
172 changed files with 755 additions and 2447 deletions
@@ -1,236 +1,6 @@
 Entries are sorted chronologically from oldest to youngest within each release,
 releases are sorted from youngest to oldest.

-version 4.1.4:
- avcodec/ilbcdec: Simplify use of unsigned and fix more undefined overflows
- avcodec/golomb: Correct the doxy about get_ue_golomb() and errors
- avformat/utils: Check timebase before use in estimate_timings()
- avcodec/hq_hqa: Use ff_set_dimensions()
- avcodec/rv10: Fix integer overflow in aspect ratio compare
- avcodec/4xm: Fix signed integer overflows in idct()
- avcodec/qdm2: Check checksum_size for 0
- avcodec/qdm2: error out of qdm2_fft_decode_tones() before entering endless loop
- avcodec/qdm2: Do not read out of array in fix_coding_method_array()
- avcodec/svq3: Use ff_set_dimension()
- avcodec/iff: Check ham vs bpp
- avcodec/ffwavesynth: use uint32_t to compute difference, it is enough
- avcodec/ffwavesynth: Simplify lcg_seek(), avoid negative case
- avcodec/ffwavesynth: Fix backward lcg_seek()
- avcodec/flicvideo: Fix off by 1 error in flic_decode_frame_24BPP()
- avcodec/vc1_block: Check for vlc error in vc1_decode_ac_coeff()
- avcodec/alac: Check lpc_quant
- avcodec/dxv: Initialize tex_funct to NULL
- avcodec/alsdec: Add FF_CODEC_CAP_INIT_CLEANUP
- avcodec/alsdec: Fix integer overflow with buffer number
- avcodec/alsdec: Fixes signed integer overflow in LSB addition
- avcodec/alsdec: Check opt_order / sb_length in ra_block handling
- avcodec/alsdec: Fix integer overflow with shifting samples
- avcodec/alsdec: Fix undefined behavior in decode_rice()
- avcodec/alsdec: Fixes invalid shifts in read_var_block_data() and INTERLEAVE_OUTPUT()
- avcodec/hevc_ps: Change num_tile_rows/columns checks to sps->ctb_height/weight
- avcodec/hevc_ps: Fix integer overflow with num_tile_rows and num_tile_columns
- avcodec/apedec: Add k < 24 check to the only k++ case which lacks such a check
- avformat/aviobuf: Delay buffer downsizing until asserts are met
- avcodec/fitsdec: Check data_min/max
- avcodec/m101: Fix off be 2 error
- avcodec/qdm2: Move fft_order check up
- avcodec/libvorbisdec: Check extradata size
- avformat/vqf: Check header_size
- avcodec/atrac9dec: Check q_unit_cnt in parse_band_ext()
- avcodec/atrac9dec: Check that the reused block has succeeded initilization
- avcodec/utils: Check bits_per_coded_sample
- avcodec/videodsp_template: Fix overflow of addition
- avcodec/alsdec: Fix invalid shift in multiply()
- avcodec/ffwavesynth: Check ts_end - ts_start for overflow
- avcodec/vc1dsp: Avoid undefined shifts in vc1_v_s_overlap_c / vc1_h_s_overlap_c
- avcodec/tta: Fix undefined shift
- avcodec/qdmc: Fix integer overflows in PRNG
- avcodec/bintext: Check font height
- avcodec/binkdsp: Fix integer overflows in idct
- avcodec/bink: Fix integer overflow in unquantize_dct_coeffs()
- avcodec/motionpixels: Check for vlc error in mp_get_vlc()
- avcodec/loco: Limit lossy parameter so it is sane and does not overflow
- avformat/mov: Set fragment.found_tfhd only after TFHD has been parsed
- avcodec/xpmdec: Do not use context dimensions as temporary variables
- avcodec/fitsdec: Fix division by 0 in size check
- avcodec/aacpsdsp_template: Fix integer overflow in ps_hybrid_analysis_c()
- avcodec/truemotion2: Fix integer overflow in last loop in tm2_update_block()
- avcodec/iff: finetune the palette size check in the mask case
- avcodec/iff: Fix mask_buf / mask_palbuf leak
- avformat/icodec: Free ico->images on error paths
- avformat/wsddec: Fix undefined shift
- avcodec/fmvc: Check if header fields are available before allocating the image
- avcodec/bink: Reorder operations in init to avoid memleak on error
- avformat/wtvdec: Avoid (32bit signed) sectors
- avcodec/bitstream: Check for more conflicting codes in build_table()
- avcodec/bitstream: Check for integer code truncation in build_table()
- avformat/sbgdec: Fixes integer overflow in str_to_time() with hours
- avformat/vpk: Check offset for validity
- avformat/vpk: Fix integer overflow in samples_per_block computation
- avcodec/mjpegdec: Check for non ls PAL8
- avcodec/interplayvideo: check decoding_map_size with video_data_size
- avcodec/h264_parse: Use 64bit for expectedpoc and expected_delta_per_poc_cycle
- avcodec/mss4: Check input size against skip bits
- avcodec/dxv: Check op_offset in dxv_decompress_cocg()
- avcodec/diracdec: Fix integer overflow in global_mv()
- avcodec/vmnc: Check available space against chunks before reget_buffer()
- avcodec/aacdec_template: skip apply_tns() if max_sfb is 0 (from previous header decode failure)
- avcodec/aacdec_fixed: Handle more extreem cases in noise_scale()
- avcodec/aacdec_template: Merge 3 #ifs related to noise handling
- avcodec/aacdec_fixed: ssign seems always -1 in noise_scale(), simplify
- avformat/mp3enc: Avoid SEEK_END as it is unsupported
- avcodec/truemotion2: Fix several integer overflows in tm2_update_block()
- avformat/webm_chunk: Specify expected argument length of get_chunk_filename()
- avformat/webm_chunk: Check header filename length
- avcodec/cpia: Check input size also against linesizes and EOL
- swscale/tests/swscale: Lengthen pixfmt name buffer to 21 bytes
- libswcale: Fix possible string overflow in test.
- avcodec/hq_hqa: Check available space before reading slice offsets
- lavf/webm_chunk: Respect buffer size
- avcodec/fits: Check bitpix
- avcodec/jvdec: Use ff_get_buffer() when the content is not reused
- avcodec/truemotion2: Fix 2 integer overflows in tm2_update_block()
- avcodec/gdv: Check input palette size before rescale()
- avcodec/jpeg2000: Check stepsize before using it
- avcodec/aacdec_fixed: Fix undefined shift in noise_scale()
- avutil/avstring: Fix bug and undefined behavior in av_strncasecmp()
- avformat/mov: Skip stsd adjustment without chunks
- avformat/aadec: Check for scanf() failure
- avcodec/ccaption_dec: Add a blank like at the end to avoid rollup reading from outside
- avcodec/ivi: Move buffer/block end check to caller of ivi_dc_transform()
- avcodec/diracdec: Use 64bit in intermediate of global motion vector field generation
- avcodec/truemotion2: Fix integer overflow in tm2_decode_blocks()
- movsub_bsf: Fix mov2textsub regression
- lavc/libaomenc: Add a maximum constraint of 64 encoder threads.
- avformat/aacdec: fix demuxing of small frames
- avcodec/cuviddec: improve progressive frame detection
- avformat/matroskaenc: fix leak on error
- avformat/av1: Initialize padding in ff_isom_write_av1c
- avcodec/cbs_av1: fix parsing spatial_id
-
-version 4.1.3:
- avcodec/rscc: Check that the to be uncompressed input is large enough
- avformat/movenc: free eac3 private data only when closing the stream
- avcodec/hevcdec: Avoid only partly skiping duplicate first slices
- lavc/bmp: Avoid a heap buffer overwrite for 1bpp input.
- avcodec/mpegpicture: Check size of edge_emu_buffer
- avformat/mov: Fix potential integer overflow in entry check in mov_read_trun()
- avcodec/truemotion2: Fix integer overflow in tm2_null_res_block()
- avcodec/cbs_av1: fix range of values for Mastering Display Color Volume Metadata OBUs
- avcodec/av1_parser: don't abort parsing the first frame if extradata parsing fails
-
-version 4.1.2:
- avcodec/dfa: Check the chunk header is not truncated
- avcodec/clearvideo: Check remaining data in P frames
- avcodec/hevcdec: decode at most one slice reporting being the first in the picture
- avcodec/dvbsubdec: Check object position
- avcodec/cdgraphics: Use ff_set_dimensions()
- avformat/gdv: Check fps
- configure: use vpx_codec_vp8_dx/cx for libvpx-vp8 checking
- configure: add missing pthreads extralibs dependency for libvpx-vp9
- avcodec/mpeg4videodec: Check idx in mpeg4_decode_studio_block()
- avcodec/dxv: Correct integer overflow in get_opcodes()
- avcodec/scpr: Fix use of uninitialized variable
- avcodec/qpeg: Limit copy in qpeg_decode_intra() to the available bytes
- avcodec/aic: Check remaining bits in aic_decode_coeffs()
- avcodec/gdv: Check for truncated tags in decompress_5()
- avcodec/bethsoftvideo: Check block_type
- avcodec/jpeg2000dwt: Fix integer overflow in dwt_decode97_int()
- avcodec/error_resilience: Use a symmetric check for skipping MV estimation
- avcodec/mlpdec: Insuffient typo
- avcodec/zmbv: obtain frame later
- avcodec/jvdec: Check available input space before decode8x8()
- avcodec/h264_direct: Fix overflow in POC comparission
- avformat/webmdashenc: Check id in adaption_sets
- avformat/http: Fix Out-of-Bounds access in process_line()
- avformat/ftp: Fix Out-of-Bounds Access and Information Leak in ftp.c:393
- avcodec/htmlsubtitles: Fixes denial of service due to use of sscanf in inner loop for handling braces
- avcodec/htmlsubtitles: Fixes denial of service due to use of sscanf in inner loop for tag scaning
- avformat/matroskadec: Do not leak queued packets on sync errors
- avcodec/mpeg4videodec: Clear interlaced_dct for studio profile
- avformat/mov: Do not use reference stream in mov_read_sidx() if there is no reference stream
- avcodec/sbrdsp_fixed.c: remove input value limit for sbr_sum_square_c()
- avcodec/prores_ks: Fix luma quantization if q >= MAX_STORED_Q
- avformat/mov: fix hang while seek on a kind of fragmented mp4
- avformat/async: fix assertion condition when draining buffer
- avcodec/cbs_av1: don't call cbs_av1_read_trailing_bits() when no bits remain in the OBU
-
-version 4.1.1:
- avformat/mov: validate chunk_count vs stsc_data
- avformat/mov: require tfhd to begin parsing trun
- avcodec/pgssubdec: Check for duplicate display segments
- avformat/rtsp: Check number of streams in sdp_parse_line()
- avformat/rtsp: Clear reply in every iteration in ff_rtsp_connect()
- avcodec/rasc: Move ff_get_buffer() after frame checks
- avcodec/rasc: Check uncompressed dlta size
- avcodec/fic: Check that there is input left in fic_decode_block()
- avcodec/ilbcdec: Fix undefined integer overflow lsf2poly()
- avcodec/ilbcdec: Fix integer overflow in construct_vector()
- avcodec/prosumer: Error out if decompress() stops reading data
- avcodec/tiff: Check for 12bit gray fax
- avutil/imgutils: Optimize memset_bytes() by using av_memcpy_backptr()
- avutil/mem: Optimize fill32() by unrolling and using 64bit
- configure: bump year
- avcodec/tests/rangecoder: initialize array to avoid valgrind warning
- avcodec/gdv: Optimize and factorize scaling loops
- avcodec/h264_slice: Fix integer overflow in implicit_weight_table()
- avcodec/exr: set layer_match in all branches
- avcodec/exr: Check for duplicate channel index
- avfilter/vf_tonemap_opencl: Make static tables const
- doc/indevs: fix upto typo
- avcodec/4xm: Fix returned error codes
- avformat/libopenmpt: Fix successfull typo
- avcodec/v4l2_m2m: fix cant typo
- avcodec/mjpegbdec: Fix some misplaced {} and spaces
- avformat/wvdec: detect and error out on WavPack DSD files
- avcodec/mips: Fix failed case: hevc-conformance-AMP_A_Samsung_* when enable msa
- avcodec/fic: Fail on invalid slice size/off
- avcodec/ilbcdec: fix integer overflow in energy
- postproc/postprocess_template: remove FF_REG_sp from clobber list
- postproc/postprocess_template: Avoid using %4 for the threshold compare
- libavformat/mov: Fix NULL-dereference read for some encrypted content.
- avcodec/rpza: Check that there is enough data for all the blocks
- avcodec/rpza: Move frame allocation to a later point
- avcodec/avcodec: Document the data type for AV_PKT_DATA_MPEGTS_STREAM_ID
- avformat/mpegts: Fix side data type for stream id
- tests/fate/filter-video: increase fuzz for fate-filter-refcmp-psnr-rgb
- avcodec/mjpegdec: Fix indention of ljpeg_decode_yuv_scan()
- lavf/id3v2: fail read_apic on EOF reading mimetype
- avcodec/rasc: Check that the number of moves is less than or equal the number of pixels
- avformat/nutenc: Document trailer index assert better
- lavf/mov: ensure only one tkhd per trak
- avcodec/clearvideo: Check remaining input bits in P macro block loop
- avcodec/rasc: Check input space before reading chunk
- avcodec/dxv: Check that there is enough data to decompress
- avcodec/ppc/hevcdsp: Fix build failures with powerpc-linux-gnu-gcc-4.8 with --disable-optimizations
- avcodec/msvideo1: Check for too small dimensions
- avcodec/wmv2dec: Skip I frame if its smaller than 1/8 of the minimal size
- avcodec/msmpeg4dec: Skip frame if its smaller than 1/8 of the minimal size
- avcodec/truemotion2rt: Fix rounding in input size check
- avcodec/diracdec: Check component quant
- avcodec/tiff: Limit filtering to decoded data
- avcodec/truemotion2: fix integer overflows in tm2_low_chroma()
- avcodec/pngdec: Check compression method
- fftools/ffmpeg: Repair reinit_filter feature
- avcodec/shorten: Fix integer overflow with offset
- avcodec/imm4: Use ff_set_dimensions()
- h264_redundant_pps: Fix logging context
- avfilter/af_asetnsamples: fix last frame props
- cbs_av1: Fix reading of overlong uvlc codes
- avcodec/cbs_av1: fix parsing delta_frame_id_minus1
- avfilter/vf_overlay: fix filtering with negative y
- avformat/movenc: get number of written bytes from bitstream writer
- avformat/movenc: fix size calculation in mov_write_eac3_tag()
- avfilter/vf_overlay: fix crash with negative y
- avcodec/mpeg_er: fix clearing chroma blocks for 422 and 444
- avfilter/af_afade: fix duration maximum
- avfilter/vf_fade: fix start/duration max value
- avcodec/cbs_av1: fix parsing signed integer values
- avcodec/cbs_av1: fix storage size for segmentation_params feature_value fields
- configure: Add missing xlib dependency for VAAPI X11 code
- avcodec/hevcdec: fix non-ref frame judgement
-
-
 version 4.1:
 - deblock filter
 - tmix filter
@@ -272,7 +42,6 @@ version 4.1:
 - xstack filter
 - pcm vidc decoder and encoder
 - (a)graphmonitor filter
- yadif_cuda filter


 version 4.0:
@@ -1 +1 @@
-4.1.4
+4.0.git
@@ -1,15 +0,0 @@
-
-              ┌─────────────────────────────────────────────┐
-              │ RELEASE NOTES for FFmpeg 4.1 "al-Khwarizmi" │
-              └─────────────────────────────────────────────┘
-
-   The FFmpeg Project proudly presents FFmpeg 4.1 "al-Khwarizmi", about 6
-   months after the release of FFmpeg 4.0.
-
-   A complete Changelog is available at the root of the project, and the
-   complete Git history on https://git.ffmpeg.org/gitweb/ffmpeg.git
-
-   We hope you will like this release as much as we enjoyed working on it, and
-   as usual, if you have any questions about it, or any FFmpeg related topic,
-   feel free to join us on the #ffmpeg IRC channel (on irc.freenode.net) or ask
-   on the mailing-lists.
@@ -2812,7 +2812,6 @@ d3d11va_deps="dxva_h ID3D11VideoDecoder ID3D11VideoContext"
 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32 user32"
 ffnvcodec_deps_any="libdl LoadLibrary"
 nvdec_deps="ffnvcodec"
-vaapi_x11_deps="xlib"
 videotoolbox_hwaccel_deps="videotoolbox pthreads"
 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
 xvmc_deps="X11_extensions_XvMClib_h"
@@ -2958,7 +2957,6 @@ h264_rkmpp_decoder_deps="rkmpp"
 h264_rkmpp_decoder_select="h264_mp4toannexb_bsf"
 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
 h264_v4l2m2m_decoder_deps="v4l2_m2m h264_v4l2_m2m"
-h264_v4l2m2m_decoder_select="h264_mp4toannexb_bsf"
 h264_v4l2m2m_encoder_deps="v4l2_m2m h264_v4l2_m2m"
 hevc_amf_encoder_deps="amf"
 hevc_cuvid_decoder_deps="cuvid"
@@ -2973,7 +2971,6 @@ hevc_rkmpp_decoder_select="hevc_mp4toannexb_bsf"
 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
 hevc_v4l2m2m_decoder_deps="v4l2_m2m hevc_v4l2_m2m"
-hevc_v4l2m2m_decoder_select="hevc_mp4toannexb_bsf"
 hevc_v4l2m2m_encoder_deps="v4l2_m2m hevc_v4l2_m2m"
 mjpeg_cuvid_decoder_deps="cuvid"
 mjpeg_qsv_encoder_deps="libmfx"
@@ -3183,7 +3180,6 @@ image2_alias_pix_demuxer_select="image2_demuxer"
 image2_brender_pix_demuxer_select="image2_demuxer"
 ipod_muxer_select="mov_muxer"
 ismv_muxer_select="mov_muxer"
-ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf"
 matroska_audio_muxer_select="matroska_muxer"
 matroska_demuxer_select="iso_media riffdec"
 matroska_demuxer_suggest="bzlib lzo zlib"
@@ -3485,7 +3481,6 @@ zscale_filter_deps="libzimg const_nan"
 scale_vaapi_filter_deps="vaapi"
 vpp_qsv_filter_deps="libmfx"
 vpp_qsv_filter_select="qsvvpp"
-yadif_cuda_filter_deps="cuda_sdk"

 # examples
 avio_dir_cmd_deps="avformat avutil"
@@ -6152,21 +6147,21 @@ enabled libvorbis         && require_pkg_config libvorbis vorbis vorbis/codec.h
 enabled libvpx            && {
    enabled libvpx_vp8_decoder && {
        check_pkg_config libvpx_vp8_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
-            check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp8_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs" ||
+            check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_dec_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
                die "ERROR: libvpx decoder version must be >=1.4.0";
    }
    enabled libvpx_vp8_encoder && {
        check_pkg_config libvpx_vp8_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
-            check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp8_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs" ||
+            check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_IMG_FMT_HIGHBITDEPTH" -lvpx ||
                die "ERROR: libvpx encoder version must be >=1.4.0";
    }
    enabled libvpx_vp9_decoder && {
        check_pkg_config libvpx_vp9_decoder "vpx >= 1.4.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
-            check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
+            check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
    }
    enabled libvpx_vp9_encoder && {
        check_pkg_config libvpx_vp9_encoder "vpx >= 1.4.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
-            check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs $pthreads_extralibs"
+            check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VPX_IMG_FMT_HIGHBITDEPTH" "-lvpx $libm_extralibs"
    }
    if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
        die "libvpx enabled but no supported decoders found"
@@ -7243,7 +7238,7 @@ cat > $TMPH <<EOF
 #define FFMPEG_CONFIG_H
 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
 #define FFMPEG_LICENSE "$(c_escape $license)"
-#define CONFIG_THIS_YEAR 2019
+#define CONFIG_THIS_YEAR 2018
 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
@@ -38,7 +38,7 @@ PROJECT_NAME           = FFmpeg
 # could be handy for archiving the generated documentation or if some version
 # control system is used.

-PROJECT_NUMBER         = 4.1.4
+PROJECT_NUMBER         =

 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -17943,64 +17943,6 @@ filter").
 It accepts the following parameters:


-@table @option
-
-@item mode
-The interlacing mode to adopt. It accepts one of the following values:
-
-@table @option
-@item 0, send_frame
-Output one frame for each frame.
-@item 1, send_field
-Output one frame for each field.
-@item 2, send_frame_nospatial
-Like @code{send_frame}, but it skips the spatial interlacing check.
-@item 3, send_field_nospatial
-Like @code{send_field}, but it skips the spatial interlacing check.
-@end table
-
-The default value is @code{send_frame}.
-
-@item parity
-The picture field parity assumed for the input interlaced video. It accepts one
-of the following values:
-
-@table @option
-@item 0, tff
-Assume the top field is first.
-@item 1, bff
-Assume the bottom field is first.
-@item -1, auto
-Enable automatic detection of field parity.
-@end table
-
-The default value is @code{auto}.
-If the interlacing is unknown or the decoder does not export this information,
-top field first will be assumed.
-
-@item deint
-Specify which frames to deinterlace. Accept one of the following
-values:
-
-@table @option
-@item 0, all
-Deinterlace all frames.
-@item 1, interlaced
-Only deinterlace frames marked as interlaced.
-@end table
-
-The default value is @code{all}.
-@end table
-
-@section yadif_cuda
-
-Deinterlace the input video using the @ref{yadif} algorithm, but implemented
-in CUDA so that it can work as part of a GPU accelerated pipeline with nvdec
-and/or nvenc.
-
-It accepts the following parameters:
-
-
@table @option

@item mode
@@ -374,7 +374,7 @@ Defaults to @option{false}.
@item timestamp_align
 Capture start time alignment in seconds. If set to nonzero, input frames are
 dropped till the system timestamp aligns with configured value.
-Alignment difference of up to one frame duration is tolerated.
+Alignment difference of upto one frame duration is tolerated.
 This is useful for maintaining input synchronization across N different
 hardware devices deployed for 'N-way' redundancy. The system time of different
 hardware devices should be synchronized with protocols such as NTP or PTP,
@@ -2139,6 +2139,9 @@ static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)

    /* determine if the parameters for this input changed */
    need_reinit = ifilter->format != frame->format;
+    if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
+        (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
+        need_reinit = 1;

    switch (ifilter->ist->st->codecpar->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
@@ -2152,13 +2155,6 @@ static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
        break;
    }

-    if (!ifilter->ist->reinit_filters && fg->graph)
-        need_reinit = 0;
-
-    if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
-        (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
-        need_reinit = 1;
-
    if (need_reinit) {
        ret = ifilter_parameters_from_frame(ifilter, frame);
        if (ret < 0)
@@ -158,7 +158,7 @@ typedef struct FourXContext {
 #define FIX_1_847759065 121095
 #define FIX_2_613125930 171254

-#define MULTIPLY(var, const) ((int)((var) * (unsigned)(const)) >> 16)
+#define MULTIPLY(var, const) (((var) * (const)) >> 16)

 static void idct(int16_t block[64])
 {
@@ -498,7 +498,7 @@ static int decode_i_block(FourXContext *f, int16_t *block)

    if (get_bits_left(&f->gb) < 2){
        av_log(f->avctx, AV_LOG_ERROR, "%d bits left before decode_i_block()\n", get_bits_left(&f->gb));
-        return AVERROR_INVALIDDATA;
+        return -1;
    }

    /* DC coef */
@@ -732,7 +732,7 @@ static int decode_i2_frame(FourXContext *f, const uint8_t *buf, int length)
        for (x = 0; x < width; x += 16) {
            unsigned int color[4] = { 0 }, bits;
            if (buf_end - buf < 8)
-                return AVERROR_INVALIDDATA;
+                return -1;
            // warning following is purely guessed ...
            color[0] = bytestream2_get_le16u(&g3);
            color[1] = bytestream2_get_le16u(&g3);
@@ -195,12 +195,12 @@ static void subband_scale(int *dst, int *src, int scale, int offset, int len)

 static void noise_scale(int *coefs, int scale, int band_energy, int len)
 {
-    int s = -scale;
+    int ssign = scale < 0 ? -1 : 1;
+    int s = FFABS(scale);
    unsigned int round;
    int i, out, c = exp2tab[s & 3];
    int nlz = 0;

-    av_assert0(s >= 0);
    while (band_energy > 0x7fff) {
        band_energy >>= 1;
        nlz++;
@@ -216,20 +216,15 @@ static void noise_scale(int *coefs, int scale, int band_energy, int len)
        round = s ? 1 << (s-1) : 0;
        for (i=0; i<len; i++) {
            out = (int)(((int64_t)coefs[i] * c) >> 32);
-            coefs[i] = -((int)(out+round) >> s);
+            coefs[i] = ((int)(out+round) >> s) * ssign;
        }
    }
    else {
        s = s + 32;
-        if (s > 0) {
-            round = 1 << (s-1);
-            for (i=0; i<len; i++) {
-                out = (int)((int64_t)((int64_t)coefs[i] * c + round) >> s);
-                coefs[i] = -out;
-            }
-        } else {
-            for (i=0; i<len; i++)
-                coefs[i] = -(int64_t)coefs[i] * c * (1 << -s);
+        round = 1 << (s-1);
+        for (i=0; i<len; i++) {
+            out = (int)((int64_t)((int64_t)coefs[i] * c + round) >> s);
+            coefs[i] = out * ssign;
        }
    }
 }
@@ -1673,24 +1673,25 @@ static int decode_spectrum_and_dequant(AACContext *ac, INTFLOAT coef[1024],
                }
            } else if (cbt_m1 == NOISE_BT - 1) {
                for (group = 0; group < (AAC_SIGNE)g_len; group++, cfo+=128) {
+#if !USE_FIXED
+                    float scale;
+#endif /* !USE_FIXED */
                    INTFLOAT band_energy;
-#if USE_FIXED
+
                    for (k = 0; k < off_len; k++) {
                        ac->random_state  = lcg_random(ac->random_state);
+#if USE_FIXED
                        cfo[k] = ac->random_state >> 3;
+#else
+                        cfo[k] = ac->random_state;
+#endif /* USE_FIXED */
                    }

+#if USE_FIXED
                    band_energy = ac->fdsp->scalarproduct_fixed(cfo, cfo, off_len);
                    band_energy = fixed_sqrt(band_energy, 31);
                    noise_scale(cfo, sf[idx], band_energy, off_len);
 #else
-                    float scale;
-
-                    for (k = 0; k < off_len; k++) {
-                        ac->random_state  = lcg_random(ac->random_state);
-                        cfo[k] = ac->random_state;
-                    }
-
                    band_energy = ac->fdsp->scalarproduct_float(cfo, cfo, off_len);
                    scale = sf[idx] / sqrtf(band_energy);
                    ac->fdsp->vector_fmul_scalar(cfo, cfo, scale, off_len);
@@ -2492,9 +2493,6 @@ static void apply_tns(INTFLOAT coef_param[1024], TemporalNoiseShaping *tns,
    INTFLOAT tmp[TNS_MAX_ORDER+1];
    UINTFLOAT *coef = coef_param;

-    if(!mmm)
-        return;
-
    for (w = 0; w < ics->num_windows; w++) {
        bottom = ics->num_swb;
        for (filt = 0; filt < tns->n_filt[w]; filt++) {
@@ -54,10 +54,10 @@ static void ps_hybrid_analysis_c(INTFLOAT (*out)[2], INTFLOAT (*in)[2],
        INT64FLOAT sum_im = (INT64FLOAT)filter[i][6][0] * in[6][1];

        for (j = 0; j < 6; j++) {
-            INT64FLOAT in0_re = in[j][0];
-            INT64FLOAT in0_im = in[j][1];
-            INT64FLOAT in1_re = in[12-j][0];
-            INT64FLOAT in1_im = in[12-j][1];
+            INTFLOAT in0_re = in[j][0];
+            INTFLOAT in0_im = in[j][1];
+            INTFLOAT in1_re = in[12-j][0];
+            INTFLOAT in1_im = in[12-j][1];
            sum_re += (INT64FLOAT)filter[i][j][0] * (in0_re + in1_re) -
                      (INT64FLOAT)filter[i][j][1] * (in0_im - in1_im);
            sum_im += (INT64FLOAT)filter[i][j][0] * (in0_im + in1_im) +
@@ -208,9 +208,6 @@ static int aic_decode_coeffs(GetBitContext *gb, int16_t *dst,
    int mb, idx;
    unsigned val;

-    if (get_bits_left(gb) < 5)
-        return AVERROR_INVALIDDATA;
-
    has_skips  = get_bits1(gb);
    coeff_type = get_bits1(gb);
    coeff_bits = get_bits(gb, 3);
@@ -306,7 +306,7 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index,
            rice_history_mult[ch] = get_bits(&alac->gb, 3);
            lpc_order[ch]         = get_bits(&alac->gb, 5);

-            if (lpc_order[ch] >= alac->max_samples_per_frame || !lpc_quant[ch])
+            if (lpc_order[ch] >= alac->max_samples_per_frame)
                return AVERROR_INVALIDDATA;

            /* read the predictor table */
@@ -487,7 +487,7 @@ static void parse_bs_info(const uint32_t bs_info, unsigned int n,
 static int32_t decode_rice(GetBitContext *gb, unsigned int k)
 {
    int max = get_bits_left(gb) - k;
-    unsigned q = get_unary(gb, 0, max);
+    int q   = get_unary(gb, 0, max);
    int r   = k ? get_bits1(gb) : !(q & 1);

    if (k > 1) {
@@ -767,8 +767,8 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
        if (*bd->use_ltp) {
            int r, c;

-            bd->ltp_gain[0]   = decode_rice(gb, 1) * 8;
-            bd->ltp_gain[1]   = decode_rice(gb, 2) * 8;
+            bd->ltp_gain[0]   = decode_rice(gb, 1) << 3;
+            bd->ltp_gain[1]   = decode_rice(gb, 2) << 3;

            r                 = get_unary(gb, 0, 4);
            c                 = get_bits(gb, 2);
@@ -779,8 +779,8 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)

            bd->ltp_gain[2]   = ltp_gain_values[r][c];

-            bd->ltp_gain[3]   = decode_rice(gb, 2) * 8;
-            bd->ltp_gain[4]   = decode_rice(gb, 1) * 8;
+            bd->ltp_gain[3]   = decode_rice(gb, 2) << 3;
+            bd->ltp_gain[4]   = decode_rice(gb, 1) << 3;

            *bd->ltp_lag      = get_bits(gb, ctx->ltp_lag_length);
            *bd->ltp_lag     += FFMAX(4, opt_order + 1);
@@ -789,20 +789,14 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)

    // read first value and residuals in case of a random access block
    if (bd->ra_block) {
-        start = FFMIN(opt_order, 3);
-        av_assert0(sb_length <= sconf->frame_length);
-        if (sb_length <= start) {
-            // opt_order or sb_length may be corrupted, either way this is unsupported and not well defined in the specification
-            av_log(avctx, AV_LOG_ERROR, "Sub block length smaller or equal start\n");
-            return AVERROR_PATCHWELCOME;
-        }
-
        if (opt_order)
            bd->raw_samples[0] = decode_rice(gb, avctx->bits_per_raw_sample - 4);
        if (opt_order > 1)
            bd->raw_samples[1] = decode_rice(gb, FFMIN(s[0] + 3, ctx->s_max));
        if (opt_order > 2)
            bd->raw_samples[2] = decode_rice(gb, FFMIN(s[0] + 1, ctx->s_max));
+
+        start = FFMIN(opt_order, 3);
    }

    // read all residuals
@@ -867,7 +861,7 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
                    res >>= 1;

                    if (cur_k) {
-                        res  *= 1U << cur_k;
+                        res  *= 1 << cur_k;
                        res  |= get_bits_long(gb, cur_k);
                    }
                }
@@ -1039,7 +1033,7 @@ static int decode_block(ALSDecContext *ctx, ALSBlockData *bd)

    if (*bd->shift_lsbs)
        for (smp = 0; smp < bd->block_length; smp++)
-            bd->raw_samples[smp] = (unsigned)bd->raw_samples[smp] << *bd->shift_lsbs;
+            bd->raw_samples[smp] <<= *bd->shift_lsbs;

    return 0;
 }
@@ -1385,9 +1379,6 @@ static SoftFloat_IEEE754 multiply(SoftFloat_IEEE754 a, SoftFloat_IEEE754 b) {
    mantissa_temp = (uint64_t)a.mant * (uint64_t)b.mant;
    mask_64       = (uint64_t)0x1 << 47;

-    if (!mantissa_temp)
-        return FLOAT_0;
-
    // Count the valid bit count
    while (!(mantissa_temp & mask_64) && mask_64) {
        bit_count--;
@@ -1805,11 +1796,11 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
        if (!ctx->cs_switch) {                                                       \
            for (sample = 0; sample < ctx->cur_frame_length; sample++)               \
                for (c = 0; c < avctx->channels; c++)                                \
-                    *dest++ = ctx->raw_samples[c][sample] * (1U << shift);            \
+                    *dest++ = ctx->raw_samples[c][sample] << shift;                  \
        } else {                                                                     \
            for (sample = 0; sample < ctx->cur_frame_length; sample++)               \
                for (c = 0; c < avctx->channels; c++)                                \
-                    *dest++ = ctx->raw_samples[sconf->chan_pos[c]][sample] * (1U << shift); \
+                    *dest++ = ctx->raw_samples[sconf->chan_pos[c]][sample] << shift; \
        }                                                                            \
    }

@@ -1993,8 +1984,6 @@ static av_cold int decode_init(AVCodecContext *avctx)

    // allocate quantized parcor coefficient buffer
    num_buffers = sconf->mc_coding ? avctx->channels : 1;
-    if (num_buffers * (uint64_t)num_buffers > INT_MAX) // protect chan_data_buffer allocation
-        return AVERROR_INVALIDDATA;

    ctx->quant_cof        = av_malloc_array(num_buffers, sizeof(*ctx->quant_cof));
    ctx->lpc_cof          = av_malloc_array(num_buffers, sizeof(*ctx->lpc_cof));
@@ -2127,6 +2116,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
    return 0;

 fail:
+    decode_end(avctx);
    return ret;
 }

@@ -2152,5 +2142,4 @@ AVCodec ff_als_decoder = {
    .decode         = decode_frame,
    .flush          = flush,
    .capabilities   = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1,
-    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
 };
@@ -460,7 +460,7 @@ static inline void update_rice(APERice *rice, unsigned int x)

    if (rice->ksum < lim)
        rice->k--;
-    else if (rice->ksum >= (1 << (rice->k + 5)) && rice->k < 24)
+    else if (rice->ksum >= (1 << (rice->k + 5)))
        rice->k++;
 }

@@ -71,8 +71,6 @@ typedef struct ATRAC9BlockData {
    int cpe_base_channel;
    int is_signs[30];

-    int reuseable;
-
 } ATRAC9BlockData;

 typedef struct ATRAC9Context {
@@ -202,8 +200,6 @@ static inline int parse_band_ext(ATRAC9Context *s, ATRAC9BlockData *b,
    int ext_band = 0;

    if (b->has_band_ext) {
-        if (b->q_unit_cnt < 13)
-            return AVERROR_INVALIDDATA;
        ext_band = at9_tab_band_ext_group[b->q_unit_cnt - 13][2];
        if (stereo) {
            b->channel[1].band_ext = get_bits(gb, 2);
@@ -672,7 +668,6 @@ static int atrac9_decode_block(ATRAC9Context *s, GetBitContext *gb,
    if (!reuse_params) {
        int stereo_band, ext_band;
        const int min_band_count = s->samplerate_idx > 7 ? 1 : 3;
-        b->reuseable = 0;
        b->band_count = get_bits(gb, 4) + min_band_count;
        b->q_unit_cnt = at9_tab_band_q_unit_map[b->band_count];

@@ -704,11 +699,6 @@ static int atrac9_decode_block(ATRAC9Context *s, GetBitContext *gb,
            }
            b->band_ext_q_unit = at9_tab_band_q_unit_map[ext_band];
        }
-        b->reuseable = 1;
-    }
-    if (!b->reuseable) {
-        av_log(s->avctx, AV_LOG_ERROR, "invalid block reused!\n");
-        return AVERROR_INVALIDDATA;
    }

    /* Calculate bit alloc gradient */
@@ -68,7 +68,8 @@ static int av1_parser_parse(AVCodecParserContext *ctx,

        ret = ff_cbs_read(s->cbc, td, avctx->extradata, avctx->extradata_size);
        if (ret < 0) {
-            av_log(avctx, AV_LOG_WARNING, "Failed to parse extradata.\n");
+            av_log(avctx, AV_LOG_ERROR, "Failed to parse extradata.\n");
+            goto end;
        }

        ff_cbs_fragment_uninit(s->cbc, td);
@@ -1321,7 +1321,7 @@ enum AVPacketSideDataType {
    AV_PKT_DATA_METADATA_UPDATE,

    /**
-     * MPEGTS stream ID as uint8_t, this is required to pass the stream ID
+     * MPEGTS stream ID, this is required to pass the stream ID
     * information from the demuxer to the corresponding muxer.
     */
    AV_PKT_DATA_MPEGTS_STREAM_ID,
@@ -109,11 +109,6 @@ static int bethsoftvid_decode_frame(AVCodecContext *avctx,
            if(yoffset >= avctx->height)
                return AVERROR_INVALIDDATA;
            dst += vid->frame->linesize[0] * yoffset;
-        case VIDEO_P_FRAME:
-        case VIDEO_I_FRAME:
-            break;
-        default:
-            return AVERROR_INVALIDDATA;
    }

    // main code
@@ -702,15 +702,15 @@ static int read_dct_coeffs(GetBitContext *gb, int32_t block[64],
    return quant_idx;
 }

-static void unquantize_dct_coeffs(int32_t block[64], const uint32_t quant[64],
+static void unquantize_dct_coeffs(int32_t block[64], const int32_t quant[64],
                                  int coef_count, int coef_idx[64],
                                  const uint8_t *scan)
 {
    int i;
-    block[0] = (int)(block[0] * quant[0]) >> 11;
+    block[0] = (block[0] * quant[0]) >> 11;
    for (i = 0; i < coef_count; i++) {
        int idx = coef_idx[i];
-        block[scan[idx]] = (int)(block[scan[idx]] * quant[idx]) >> 11;
+        block[scan[idx]] = (block[scan[idx]] * quant[idx]) >> 11;
    }
 }

@@ -1335,13 +1335,13 @@ static av_cold int decode_init(AVCodecContext *avctx)
    }
    c->avctx = avctx;

-    if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
-        return ret;
-
    c->last = av_frame_alloc();
    if (!c->last)
        return AVERROR(ENOMEM);

+    if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
+        return ret;
+
    avctx->pix_fmt = c->has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
    avctx->color_range = c->version == 'k' ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;

@@ -33,22 +33,20 @@
 #define A3  3784
 #define A4 -5352

-#define MUL(X,Y) ((int)((unsigned)(X) * (Y)) >> 11)
-
 #define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\
    const int a0 = (src)[s0] + (src)[s4]; \
    const int a1 = (src)[s0] - (src)[s4]; \
    const int a2 = (src)[s2] + (src)[s6]; \
-    const int a3 = MUL(A1, (src)[s2] - (src)[s6]); \
+    const int a3 = (A1*((src)[s2] - (src)[s6])) >> 11; \
    const int a4 = (src)[s5] + (src)[s3]; \
    const int a5 = (src)[s5] - (src)[s3]; \
    const int a6 = (src)[s1] + (src)[s7]; \
    const int a7 = (src)[s1] - (src)[s7]; \
    const int b0 = a4 + a6; \
-    const int b1 = MUL(A3, a5 + a7); \
-    const int b2 = MUL(A4, a5) - b0 + b1; \
-    const int b3 = MUL(A1, a6 - a4) - b2; \
-    const int b4 = MUL(A2, a7) + b3 - b1; \
+    const int b1 = (A3*(a5 + a7)) >> 11; \
+    const int b2 = ((A4*a5) >> 11) - b0 + b1; \
+    const int b3 = (A1*(a6 - a4) >> 11) - b2; \
+    const int b4 = ((A2*a7) >> 11) + b3 - b1; \
    (dest)[d0] = munge(a0+a2   +b0); \
    (dest)[d1] = munge(a1+a3-a2+b2); \
    (dest)[d2] = munge(a1-a3+a2+b3); \
@@ -63,10 +63,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
            av_log(avctx, AV_LOG_ERROR, "not enough extradata\n");
            return AVERROR_INVALIDDATA;
        }
-        if (!s->font_height) {
-            av_log(avctx, AV_LOG_ERROR, "invalid font height\n");
-            return AVERROR_INVALIDDATA;
-        }
    } else {
        s->font_height = 8;
        s->flags = 0;
@@ -188,9 +188,8 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
            }
            for (k = 0; k < nb; k++) {
                int bits = table[j][1];
-                int oldsym  = table[j][0];
                ff_dlog(NULL, "%4x: code=%d n=%d\n", j, i, n);
-                if ((bits || oldsym) && (bits != n || oldsym != symbol)) {
+                if (bits != 0 && bits != n) {
                    av_log(NULL, AV_LOG_ERROR, "incorrect codes\n");
                    return AVERROR_INVALIDDATA;
                }
@@ -227,10 +226,6 @@ static int build_table(VLC *vlc, int table_nb_bits, int nb_codes,
            /* note: realloc has been done, so reload tables */
            table = (volatile VLC_TYPE (*)[2])&vlc->table[table_index];
            table[j][0] = index; //code
-            if (table[j][0] != index) {
-                avpriv_request_sample(NULL, "strange codes");
-                return AVERROR_PATCHWELCOME;
-            }
            i = k-1;
        }
    }
@@ -291,7 +291,7 @@ static int bmp_decode_frame(AVCodecContext *avctx,
        case 1:
            for (i = 0; i < avctx->height; i++) {
                int j;
-                for (j = 0; j < avctx->width >> 3; j++) {
+                for (j = 0; j < n; j++) {
                    ptr[j*8+0] =  buf[j] >> 7;
                    ptr[j*8+1] = (buf[j] >> 6) & 1;
                    ptr[j*8+2] = (buf[j] >> 5) & 1;
@@ -301,9 +301,6 @@ static int bmp_decode_frame(AVCodecContext *avctx,
                    ptr[j*8+6] = (buf[j] >> 1) & 1;
                    ptr[j*8+7] =  buf[j]       & 1;
                }
-                for (j = 0; j < (avctx->width & 7); j++) {
-                    ptr[avctx->width - (avctx->width & 7) + j] = buf[avctx->width >> 3] >> (7 - j) & 1;
-                }
                buf += n;
                ptr += linesize;
            }
@@ -591,21 +591,14 @@ static int decode_residual_block(AVSContext *h, GetBitContext *gb,
 }


-static inline int decode_residual_chroma(AVSContext *h)
+static inline void decode_residual_chroma(AVSContext *h)
 {
-    if (h->cbp & (1 << 4)) {
-        int ret = decode_residual_block(h, &h->gb, chroma_dec, 0,
+    if (h->cbp & (1 << 4))
+        decode_residual_block(h, &h->gb, chroma_dec, 0,
                              ff_cavs_chroma_qp[h->qp], h->cu, h->c_stride);
-        if (ret < 0)
-            return ret;
-    }
-    if (h->cbp & (1 << 5)) {
-        int ret = decode_residual_block(h, &h->gb, chroma_dec, 0,
+    if (h->cbp & (1 << 5))
+        decode_residual_block(h, &h->gb, chroma_dec, 0,
                              ff_cavs_chroma_qp[h->qp], h->cv, h->c_stride);
-        if (ret < 0)
-            return ret;
-    }
-    return 0;
 }

 static inline int decode_residual_inter(AVSContext *h)
@@ -656,7 +649,6 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
    uint8_t top[18];
    uint8_t *left = NULL;
    uint8_t *d;
-    int ret;

    ff_cavs_init_mb(h);

@@ -700,11 +692,8 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
        ff_cavs_load_intra_pred_luma(h, top, &left, block);
        h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]]
            (d, top, left, h->l_stride);
-        if (h->cbp & (1<<block)) {
-            ret = decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride);
-            if (ret < 0)
-                return ret;
-        }
+        if (h->cbp & (1<<block))
+            decode_residual_block(h, gb, intra_dec, 1, h->qp, d, h->l_stride);
    }

    /* chroma intra prediction */
@@ -714,9 +703,7 @@ static int decode_mb_i(AVSContext *h, int cbp_code)
    h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10],
                                  h->left_border_v, h->c_stride);

-    ret = decode_residual_chroma(h);
-    if (ret < 0)
-        return ret;
+    decode_residual_chroma(h);
    ff_cavs_filter(h, I_8X8);
    set_mv_intra(h);
    return 0;
@@ -29,67 +29,45 @@ static int cbs_av1_read_uvlc(CodedBitstreamContext *ctx, GetBitContext *gbc,
                             const char *name, uint32_t *write_to,
                             uint32_t range_min, uint32_t range_max)
 {
-    uint32_t zeroes, bits_value, value;
-    int position;
+    uint32_t value;
+    int position, zeroes, i, j;
+    char bits[65];

    if (ctx->trace_enable)
        position = get_bits_count(gbc);

-    zeroes = 0;
+    zeroes = i = 0;
    while (1) {
-        if (get_bits_left(gbc) < 1) {
+        if (get_bits_left(gbc) < zeroes + 1) {
            av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid uvlc code at "
                   "%s: bitstream ended.\n", name);
            return AVERROR_INVALIDDATA;
        }

-        if (get_bits1(gbc))
+        if (get_bits1(gbc)) {
+            bits[i++] = '1';
            break;
-        ++zeroes;
+        } else {
+            bits[i++] = '0';
+            ++zeroes;
+        }
    }

    if (zeroes >= 32) {
        value = MAX_UINT_BITS(32);
    } else {
-        if (get_bits_left(gbc) < zeroes) {
-            av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid uvlc code at "
-                   "%s: bitstream ended.\n", name);
-            return AVERROR_INVALIDDATA;
-        }
+        value = get_bits_long(gbc, zeroes);

-        bits_value = get_bits_long(gbc, zeroes);
-        value = bits_value + (UINT32_C(1) << zeroes) - 1;
+        for (j = 0; j < zeroes; j++)
+            bits[i++] = (value >> (zeroes - j - 1) & 1) ? '1' : '0';
+
+        value += (1 << zeroes) - 1;
    }

    if (ctx->trace_enable) {
-        char bits[65];
-        int i, j, k;
-
-        if (zeroes >= 32) {
-            while (zeroes > 32) {
-                k = FFMIN(zeroes - 32, 32);
-                for (i = 0; i < k; i++)
-                    bits[i] = '0';
-                bits[i] = 0;
-                ff_cbs_trace_syntax_element(ctx, position, name,
-                                            NULL, bits, 0);
-                zeroes -= k;
-                position += k;
-            }
-        }
-
-        for (i = 0; i < zeroes; i++)
-            bits[i] = '0';
-        bits[i++] = '1';
-
-        if (zeroes < 32) {
-            for (j = 0; j < zeroes; j++)
-                bits[i++] = (bits_value >> (zeroes - j - 1) & 1) ? '1' : '0';
-        }
-
        bits[i] = 0;
-        ff_cbs_trace_syntax_element(ctx, position, name,
-                                    NULL, bits, value);
+        ff_cbs_trace_syntax_element(ctx, position, name, NULL,
+                                    bits, value);
    }

    if (value < range_min || value > range_max) {
@@ -211,26 +189,30 @@ static int cbs_av1_read_su(CodedBitstreamContext *ctx, GetBitContext *gbc,
                           int width, const char *name,
                           const int *subscripts, int32_t *write_to)
 {
-    int position;
+    uint32_t magnitude;
+    int position, sign;
    int32_t value;

    if (ctx->trace_enable)
        position = get_bits_count(gbc);

-    if (get_bits_left(gbc) < width) {
+    if (get_bits_left(gbc) < width + 1) {
        av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid signed value at "
               "%s: bitstream ended.\n", name);
        return AVERROR_INVALIDDATA;
    }

-    value = get_sbits(gbc, width);
+    magnitude = get_bits(gbc, width);
+    sign      = get_bits1(gbc);
+    value     = sign ? -(int32_t)magnitude : magnitude;

    if (ctx->trace_enable) {
        char bits[33];
        int i;
        for (i = 0; i < width; i++)
-            bits[i] = value & (1 << (width - i - 1)) ? '1' : '0';
-        bits[i] = 0;
+            bits[i] = magnitude >> (width - i - 1) & 1 ? '1' : '0';
+        bits[i] = sign ? '1' : '0';
+        bits[i + 1] = 0;

        ff_cbs_trace_syntax_element(ctx, position,
                                    name, subscripts, bits, value);
@@ -244,21 +226,29 @@ static int cbs_av1_write_su(CodedBitstreamContext *ctx, PutBitContext *pbc,
                            int width, const char *name,
                            const int *subscripts, int32_t value)
 {
-    if (put_bits_left(pbc) < width)
+    uint32_t magnitude;
+    int sign;
+
+    if (put_bits_left(pbc) < width + 1)
        return AVERROR(ENOSPC);

+    sign      = value < 0;
+    magnitude = sign ? -value : value;
+
    if (ctx->trace_enable) {
        char bits[33];
        int i;
        for (i = 0; i < width; i++)
-            bits[i] = value & (1 << (width - i - 1)) ? '1' : '0';
-        bits[i] = 0;
+            bits[i] = magnitude >> (width - i - 1) & 1 ? '1' : '0';
+        bits[i] = sign ? '1' : '0';
+        bits[i + 1] = 0;

        ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
                                    name, subscripts, bits, value);
    }

-    put_sbits(pbc, width, value);
+    put_bits(pbc, width, magnitude);
+    put_bits(pbc, 1, sign);

    return 0;
 }
@@ -960,7 +950,7 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx,

    if (obu->header.obu_extension_flag) {
        priv->temporal_id = obu->header.temporal_id;
-        priv->spatial_id  = obu->header.spatial_id;
+        priv->spatial_id  = obu->header.temporal_id;

        if (obu->header.obu_type != AV1_OBU_SEQUENCE_HEADER &&
            obu->header.obu_type != AV1_OBU_TEMPORAL_DELIMITER &&
@@ -1006,10 +996,7 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx,
    case AV1_OBU_REDUNDANT_FRAME_HEADER:
        {
            err = cbs_av1_read_frame_header_obu(ctx, &gbc,
-                                                &obu->obu.frame_header,
-                                                obu->header.obu_type ==
-                                                AV1_OBU_REDUNDANT_FRAME_HEADER,
-                                                unit->data_ref);
+                                                &obu->obu.frame_header);
            if (err < 0)
                return err;
        }
@@ -1029,8 +1016,7 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx,
        break;
    case AV1_OBU_FRAME:
        {
-            err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->obu.frame,
-                                         unit->data_ref);
+            err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->obu.frame);
            if (err < 0)
                return err;

@@ -1071,12 +1057,8 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx,
    if (obu->obu_size > 0 &&
        obu->header.obu_type != AV1_OBU_TILE_GROUP &&
        obu->header.obu_type != AV1_OBU_FRAME) {
-        int nb_bits = obu->obu_size * 8 + start_pos - end_pos;
-
-        if (nb_bits <= 0)
-            return AVERROR_INVALIDDATA;
-
-        err = cbs_av1_read_trailing_bits(ctx, &gbc, nb_bits);
+        err = cbs_av1_read_trailing_bits(ctx, &gbc,
+                                         obu->obu_size * 8 + start_pos - end_pos);
        if (err < 0)
            return err;
    }
@@ -1142,10 +1124,7 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx,
    case AV1_OBU_REDUNDANT_FRAME_HEADER:
        {
            err = cbs_av1_write_frame_header_obu(ctx, pbc,
-                                                 &obu->obu.frame_header,
-                                                 obu->header.obu_type ==
-                                                 AV1_OBU_REDUNDANT_FRAME_HEADER,
-                                                 NULL);
+                                                 &obu->obu.frame_header);
            if (err < 0)
                return err;
        }
@@ -1162,7 +1141,7 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx,
        break;
    case AV1_OBU_FRAME:
        {
-            err = cbs_av1_write_frame_obu(ctx, pbc, &obu->obu.frame, NULL);
+            err = cbs_av1_write_frame_obu(ctx, pbc, &obu->obu.frame);
            if (err < 0)
                return err;

@@ -1200,7 +1179,7 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx,
        if (err < 0)
            return err;
        end_pos = put_bits_count(pbc);
-        obu->obu_size = header_size = (end_pos - start_pos + 7) / 8;
+        obu->obu_size = (end_pos - start_pos + 7) / 8;
    } else {
        // Empty OBU.
        obu->obu_size = 0;
@@ -1323,7 +1302,6 @@ static void cbs_av1_close(CodedBitstreamContext *ctx)
    CodedBitstreamAV1Context *priv = ctx->priv_data;

    av_buffer_unref(&priv->sequence_header_ref);
-    av_buffer_unref(&priv->frame_header_ref);

    av_freep(&priv->write_buffer);
 }
@@ -87,8 +87,8 @@ typedef struct AV1RawSequenceHeader {
    uint8_t  seq_level_idx[AV1_MAX_OPERATING_POINTS];
    uint8_t  seq_tier[AV1_MAX_OPERATING_POINTS];
    uint8_t  decoder_model_present_for_this_op[AV1_MAX_OPERATING_POINTS];
-    uint32_t decoder_buffer_delay[AV1_MAX_OPERATING_POINTS];
-    uint32_t encoder_buffer_delay[AV1_MAX_OPERATING_POINTS];
+    uint8_t  decoder_buffer_delay[AV1_MAX_OPERATING_POINTS];
+    uint8_t  encoder_buffer_delay[AV1_MAX_OPERATING_POINTS];
    uint8_t  low_delay_mode_flag[AV1_MAX_OPERATING_POINTS];
    uint8_t  initial_display_delay_present_for_this_op[AV1_MAX_OPERATING_POINTS];
    uint8_t  initial_display_delay_minus_1[AV1_MAX_OPERATING_POINTS];
@@ -170,7 +170,7 @@ typedef struct AV1RawFrameHeader {
    uint8_t last_frame_idx;
    uint8_t golden_frame_idx;
    int8_t  ref_frame_idx[AV1_REFS_PER_FRAME];
-    uint32_t delta_frame_id_minus1[AV1_REFS_PER_FRAME];
+    uint8_t delta_frame_id_minus1;

    uint8_t allow_high_precision_mv;
    uint8_t is_filter_switchable;
@@ -210,7 +210,7 @@ typedef struct AV1RawFrameHeader {
    uint8_t segmentation_temporal_update;
    uint8_t segmentation_update_data;
    uint8_t feature_enabled[AV1_MAX_SEGMENTS][AV1_SEG_LVL_MAX];
-    int16_t feature_value[AV1_MAX_SEGMENTS][AV1_SEG_LVL_MAX];
+    uint8_t feature_value[AV1_MAX_SEGMENTS][AV1_SEG_LVL_MAX];

    uint8_t delta_q_present;
    uint8_t delta_q_res;
@@ -399,10 +399,7 @@ typedef struct CodedBitstreamAV1Context {
    AV1RawSequenceHeader *sequence_header;
    AVBufferRef          *sequence_header_ref;

-    int     seen_frame_header;
-    AVBufferRef *frame_header_ref;
-    uint8_t     *frame_header;
-    size_t       frame_header_size;
+    int seen_frame_header;

    int temporal_id;
    int spatial_id;
@@ -1323,8 +1323,8 @@ static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
            if (!current->frame_refs_short_signaling)
                fbs(3, ref_frame_idx[i], 1, i);
            if (seq->frame_id_numbers_present_flag) {
-                fbs(seq->delta_frame_id_length_minus_2 + 2,
-                    delta_frame_id_minus1[i], 1, i);
+                fb(seq->delta_frame_id_length_minus_2 + 2,
+                   delta_frame_id_minus1);
            }
        }

@@ -1463,90 +1463,24 @@ static int FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw,
 }

 static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw,
-                                  AV1RawFrameHeader *current, int redundant,
-                                  AVBufferRef *rw_buffer_ref)
+                                  AV1RawFrameHeader *current)
 {
    CodedBitstreamAV1Context *priv = ctx->priv_data;
-    int start_pos, fh_bits, fh_bytes, err;
-    uint8_t *fh_start;
+    int err;
+
+    HEADER("Frame Header");

    if (priv->seen_frame_header) {
-        if (!redundant) {
-            av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid repeated "
-                   "frame header OBU.\n");
-            return AVERROR_INVALIDDATA;
-        } else {
-            GetBitContext fh;
-            size_t i, b;
-            uint32_t val;
-
-            HEADER("Redundant Frame Header");
-
-            av_assert0(priv->frame_header_ref && priv->frame_header);
-
-            init_get_bits(&fh, priv->frame_header,
-                          priv->frame_header_size);
-            for (i = 0; i < priv->frame_header_size; i += 8) {
-                b = FFMIN(priv->frame_header_size - i, 8);
-                val = get_bits(&fh, b);
-                xf(b, frame_header_copy[i],
-                   val, val, val, 1, i / 8);
-            }
-        }
+        // Nothing to do.
    } else {
-        if (redundant)
-            HEADER("Redundant Frame Header (used as Frame Header)");
-        else
-            HEADER("Frame Header");
-
        priv->seen_frame_header = 1;

-#ifdef READ
-        start_pos = get_bits_count(rw);
-#else
-        start_pos = put_bits_count(rw);
-#endif
-
        CHECK(FUNC(uncompressed_header)(ctx, rw, current));

        if (current->show_existing_frame) {
            priv->seen_frame_header = 0;
        } else {
            priv->seen_frame_header = 1;
-
-            av_buffer_unref(&priv->frame_header_ref);
-
-#ifdef READ
-            fh_bits  = get_bits_count(rw) - start_pos;
-            fh_start = (uint8_t*)rw->buffer + start_pos / 8;
-#else
-            // Need to flush the bitwriter so that we can copy its output,
-            // but use a copy so we don't affect the caller's structure.
-            {
-                PutBitContext tmp = *rw;
-                flush_put_bits(&tmp);
-            }
-
-            fh_bits  = put_bits_count(rw) - start_pos;
-            fh_start = rw->buf + start_pos / 8;
-#endif
-            fh_bytes = (fh_bits + 7) / 8;
-
-            priv->frame_header_size = fh_bits;
-
-            if (rw_buffer_ref) {
-                priv->frame_header_ref = av_buffer_ref(rw_buffer_ref);
-                if (!priv->frame_header_ref)
-                    return AVERROR(ENOMEM);
-                priv->frame_header = fh_start;
-            } else {
-                priv->frame_header_ref =
-                    av_buffer_alloc(fh_bytes + AV_INPUT_BUFFER_PADDING_SIZE);
-                if (!priv->frame_header_ref)
-                    return AVERROR(ENOMEM);
-                priv->frame_header = priv->frame_header_ref->data;
-                memcpy(priv->frame_header, fh_start, fh_bytes);
-            }
        }
    }

@@ -1590,13 +1524,11 @@ static int FUNC(tile_group_obu)(CodedBitstreamContext *ctx, RWContext *rw,
 }

 static int FUNC(frame_obu)(CodedBitstreamContext *ctx, RWContext *rw,
-                           AV1RawFrame *current,
-                           AVBufferRef *rw_buffer_ref)
+                           AV1RawFrame *current)
 {
    int err;

-    CHECK(FUNC(frame_header_obu)(ctx, rw, &current->header,
-                                 0, rw_buffer_ref));
+    CHECK(FUNC(frame_header_obu)(ctx, rw, &current->header));

    CHECK(FUNC(byte_alignment)(ctx, rw));

@@ -1637,18 +1569,15 @@ static int FUNC(metadata_hdr_mdcv)(CodedBitstreamContext *ctx, RWContext *rw,
    int err, i;

    for (i = 0; i < 3; i++) {
-        fbs(16, primary_chromaticity_x[i], 1, i);
-        fbs(16, primary_chromaticity_y[i], 1, i);
+        fcs(16, primary_chromaticity_x[i], 0, 50000, 1, i);
+        fcs(16, primary_chromaticity_y[i], 0, 50000, 1, i);
    }

-    fb(16, white_point_chromaticity_x);
-    fb(16, white_point_chromaticity_y);
+    fc(16, white_point_chromaticity_x, 0, 50000);
+    fc(16, white_point_chromaticity_y, 0, 50000);

    fc(32, luminance_max, 1, MAX_UINT_BITS(32));
-    // luminance_min must be lower than luminance_max. Convert luminance_max from
-    // 24.8 fixed point to 18.14 fixed point in order to compare them.
-    fc(32, luminance_min, 0, FFMIN(((uint64_t)current->luminance_max << 6) - 1,
-                                   MAX_UINT_BITS(32)));
+    fc(32, luminance_min, 0, current->luminance_max >> 6);

    return 0;
 }
@@ -212,10 +212,10 @@ static const unsigned char pac2_attribs[32][3] = // Color, font, ident

 struct Screen {
    /* +1 is used to compensate null character of string */
-    uint8_t characters[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
-    uint8_t charsets[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
-    uint8_t colors[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
-    uint8_t fonts[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
+    uint8_t characters[SCREEN_ROWS][SCREEN_COLUMNS+1];
+    uint8_t charsets[SCREEN_ROWS][SCREEN_COLUMNS+1];
+    uint8_t colors[SCREEN_ROWS][SCREEN_COLUMNS+1];
+    uint8_t fonts[SCREEN_ROWS][SCREEN_COLUMNS+1];
    /*
     * Bitmask of used rows; if a bit is not set, the
     * corresponding row is not used.
@@ -81,8 +81,11 @@ static av_cold int cdg_decode_init(AVCodecContext *avctx)
        return AVERROR(ENOMEM);
    cc->transparency = -1;

+    avctx->width   = CDG_FULL_WIDTH;
+    avctx->height  = CDG_FULL_HEIGHT;
    avctx->pix_fmt = AV_PIX_FMT_PAL8;
-    return ff_set_dimensions(avctx, CDG_FULL_WIDTH, CDG_FULL_HEIGHT);
+
+    return 0;
 }

 static void cdg_border_preset(CDGraphicsContext *cc, uint8_t *data)
@@ -555,9 +555,6 @@ static int clv_decode_frame(AVCodecContext *avctx, void *data,
    } else {
        int plane;

-        if (c->pmb_width * c->pmb_height > 8LL*(buf_size - bytestream2_tell(&gb)))
-            return AVERROR_INVALIDDATA;
-
        if ((ret = ff_reget_buffer(avctx, c->pic)) < 0)
            return ret;

@@ -573,8 +570,6 @@ static int clv_decode_frame(AVCodecContext *avctx, void *data,

        for (j = 0; j < c->pmb_height; j++) {
            for (i = 0; i < c->pmb_width; i++) {
-                if (get_bits_left(&c->gb) <= 0)
-                    return AVERROR_INVALIDDATA;
                if (get_bits1(&c->gb)) {
                    MV mv = mvi_predict(&c->mvi, i, j, zero_mv);

@@ -63,7 +63,7 @@ static int cpia_decode_frame(AVCodecContext *avctx,
    uint8_t *y, *u, *v, *y_end, *u_end, *v_end;

    // Check header
-    if ( avpkt->size < FRAME_HEADER_SIZE + avctx->height * 3
+    if ( avpkt->size < FRAME_HEADER_SIZE
      || header[0] != MAGIC_0 || header[1] != MAGIC_1
      || (header[17] != SUBSAMPLE_420 && header[17] != SUBSAMPLE_422)
      || (header[18] != YUVORDER_YUYV && header[18] != YUVORDER_UYVY)
@@ -70,7 +70,6 @@ typedef struct CuvidContext
    int deint_mode;
    int deint_mode_current;
    int64_t prev_pts;
-    int progressive_sequence;

    int internal_error;
    int decoder_flushing;
@@ -229,8 +228,6 @@ static int CUDAAPI cuvid_handle_video_sequence(void *opaque, CUVIDEOFORMAT* form
                              ? cudaVideoDeinterlaceMode_Weave
                              : ctx->deint_mode;

-    ctx->progressive_sequence = format->progressive_sequence;
-
    if (!format->progressive_sequence && ctx->deint_mode_current == cudaVideoDeinterlaceMode_Weave)
        avctx->flags |= AV_CODEC_FLAG_INTERLACED_DCT;
    else
@@ -363,9 +360,6 @@ static int CUDAAPI cuvid_handle_picture_display(void *opaque, CUVIDPARSERDISPINF
    parsed_frame.dispinfo = *dispinfo;
    ctx->internal_error = 0;

-    // For some reason, dispinfo->progressive_frame is sometimes wrong.
-    parsed_frame.dispinfo.progressive_frame = ctx->progressive_sequence;
-
    if (ctx->deint_mode_current == cudaVideoDeinterlaceMode_Weave) {
        av_fifo_generic_write(ctx->frame_queue, &parsed_frame, sizeof(CuvidParsedFrame), NULL);
    } else {
@@ -355,8 +355,6 @@ static int dfa_decode_frame(AVCodecContext *avctx,

    bytestream2_init(&gb, avpkt->data, avpkt->size);
    while (bytestream2_get_bytes_left(&gb) > 0) {
-        if (bytestream2_get_bytes_left(&gb) < 12)
-            return AVERROR_INVALIDDATA;
        bytestream2_skip(&gb, 4);
        chunk_size = bytestream2_get_le32(&gb);
        chunk_type = bytestream2_get_le32(&gb);
@@ -676,11 +676,6 @@ static int decode_component(DiracContext *s, int comp)
            b->length = get_interleaved_ue_golomb(&s->gb);
            if (b->length) {
                b->quant = get_interleaved_ue_golomb(&s->gb);
-                if (b->quant > (DIRAC_MAX_QUANT_INDEX - 1)) {
-                    av_log(s->avctx, AV_LOG_ERROR, "Unsupported quant %d\n", b->quant);
-                    b->quant = 0;
-                    return AVERROR_INVALIDDATA;
-                }
                align_get_bits(&s->gb);
                b->coeff_data = s->gb.buffer + get_bits_count(&s->gb)/8;
                b->length = FFMIN(b->length, FFMAX(get_bits_left(&s->gb)/8, 0));
@@ -1427,9 +1422,9 @@ static void global_mv(DiracContext *s, DiracBlock *block, int x, int y, int ref)
    int *b      = s->globalmc[ref].pan_tilt;
    int *c      = s->globalmc[ref].perspective;

-    int64_t m   = (1<<ep) - (c[0]*(int64_t)x + c[1]*(int64_t)y);
-    int64_t mx  = m * (int64_t)((A[0][0] * (int64_t)x + A[0][1]*(int64_t)y) + (1LL<<ez) * b[0]);
-    int64_t my  = m * (int64_t)((A[1][0] * (int64_t)x + A[1][1]*(int64_t)y) + (1LL<<ez) * b[1]);
+    int m       = (1<<ep) - (c[0]*x + c[1]*y);
+    int64_t mx  = m * (int64_t)((A[0][0] * (int64_t)x + A[0][1]*(int64_t)y) + (1<<ez) * b[0]);
+    int64_t my  = m * (int64_t)((A[1][0] * (int64_t)x + A[1][1]*(int64_t)y) + (1<<ez) * b[1]);

    block->u.mv[ref][0] = (mx + (1<<(ez+ep))) >> (ez+ep);
    block->u.mv[ref][1] = (my + (1<<(ez+ep))) >> (ez+ep);
@@ -1267,13 +1267,6 @@ static int dvbsub_parse_region_segment(AVCodecContext *avctx,
        display->y_pos = AV_RB16(buf) & 0xfff;
        buf += 2;

-        if (display->x_pos >= region->width ||
-            display->y_pos >= region->height) {
-            av_log(avctx, AV_LOG_ERROR, "Object outside region\n");
-            av_free(display);
-            return AVERROR_INVALIDDATA;
-        }
-
        if ((object->type == 1 || object->type == 2) && buf+1 < buf_end) {
            display->fgcolor = *buf++;
            display->bgcolor = *buf++;
@@ -426,8 +426,7 @@ static int fill_optable(unsigned *table0, OpcodeTable *table1, int nb_elements)
 static int get_opcodes(GetByteContext *gb, uint32_t *table, uint8_t *dst, int op_size, int nb_elements)
 {
    OpcodeTable optable[1024];
-    int sum, x, val, lshift, rshift, ret, i, idx;
-    int64_t size_in_bits;
+    int sum, x, val, lshift, rshift, ret, size_in_bits, i, idx;
    unsigned endoffset, newoffset, offset;
    unsigned next;
    uint8_t *src = (uint8_t *)gb->buffer;
@@ -743,9 +742,6 @@ static int dxv_decompress_cocg(DXVContext *ctx, GetByteContext *gb,
    int skip0, skip1, oi0 = 0, oi1 = 0;
    int ret, state0 = 0, state1 = 0;

-    if (op_offset < 12)
-        return AVERROR_INVALIDDATA;
-
    dst = tex_data;
    bytestream2_skip(gb, op_offset - 12);
    if (op_size0 > max_op_size0)
@@ -1055,10 +1051,6 @@ static int dxv_decode(AVCodecContext *avctx, void *data,
    avctx->pix_fmt = AV_PIX_FMT_RGBA;
    avctx->colorspace = AVCOL_SPC_RGB;

-    ctx->tex_funct = NULL;
-    ctx->tex_funct_planar[0] = NULL;
-    ctx->tex_funct_planar[1] = NULL;
-
    tag = bytestream2_get_le32(gbc);
    switch (tag) {
    case MKBETAG('D', 'X', 'T', '1'):
@@ -1200,12 +1192,6 @@ static int dxv_decode(AVCodecContext *avctx, void *data,
    ret = decompress_tex(avctx);
    if (ret < 0)
        return ret;
-    {
-        int w_block = avctx->coded_width / ctx->texture_block_w;
-        int h_block = avctx->coded_height / ctx->texture_block_h;
-        if (w_block * h_block * ctx->tex_step > ctx->tex_size * 8LL)
-            return AVERROR_INVALIDDATA;
-    }

    tframe.f = data;
    ret = ff_thread_get_buffer(avctx, &tframe, 0);
@@ -437,7 +437,7 @@ static void guess_mv(ERContext *s)
    }

    if ((!(s->avctx->error_concealment&FF_EC_GUESS_MVS)) ||
-        num_avail <= FFMAX(mb_width, mb_height) / 2) {
+        num_avail <= mb_width / 2) {
        for (mb_y = 0; mb_y < mb_height; mb_y++) {
            for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
                const int mb_xy = mb_x + mb_y * s->mb_stride;
@@ -1389,7 +1389,6 @@ static int decode_header(EXRContext *s, AVFrame *frame)
                        if (*ch_gb.buffer == '.')
                            ch_gb.buffer++;         /* skip dot if not given */
                    } else {
-                        layer_match = 0;
                        av_log(s->avctx, AV_LOG_INFO,
                               "Channel doesn't match layer : %s.\n", ch_gb.buffer);
                    }
@@ -1464,11 +1463,6 @@ static int decode_header(EXRContext *s, AVFrame *frame)
                    }
                    s->pixel_type                     = current_pixel_type;
                    s->channel_offsets[channel_index] = s->current_channel_offset;
-                } else if (channel_index >= 0) {
-                    av_log(s->avctx, AV_LOG_ERROR,
-                            "Multiple channels with index %d.\n", channel_index);
-                    ret = AVERROR_INVALIDDATA;
-                    goto fail;
                }

                s->channels = av_realloc(s->channels,
@@ -113,12 +113,18 @@ static uint32_t lcg_next(uint32_t *s)
    return *s;
 }

-static void lcg_seek(uint32_t *s, uint32_t dt)
+static void lcg_seek(uint32_t *s, int64_t dt)
 {
    uint32_t a, c, t = *s;

-    a = LCG_A;
-    c = LCG_C;
+    if (dt >= 0) {
+        a = LCG_A;
+        c = LCG_C;
+    } else { /* coefficients for a step backward */
+        a = LCG_AI;
+        c = (uint32_t)(LCG_AI * LCG_C);
+        dt = -dt;
+    }
    while (dt) {
        if (dt & 1)
            t = a * t + c;
@@ -215,7 +221,7 @@ static void wavesynth_seek(struct wavesynth_context *ws, int64_t ts)
    ws->next_inter = i;
    ws->next_ts = i < ws->nb_inter ? ws->inter[i].ts_start : INF_TS;
    *last = -1;
-    lcg_seek(&ws->dither_state, (uint32_t)ts - ws->cur_ts);
+    lcg_seek(&ws->dither_state, ts - ws->cur_ts);
    if (ws->pink_need) {
        int64_t pink_ts_cur  = (ws->cur_ts + PINK_UNIT - 1) & ~(PINK_UNIT - 1);
        int64_t pink_ts_next = ts & ~(PINK_UNIT - 1);
@@ -261,10 +267,7 @@ static int wavesynth_parse_extradata(AVCodecContext *avc)
        in->type     = AV_RL32(edata + 16);
        in->channels = AV_RL32(edata + 20);
        edata += 24;
-        if (in->ts_start < cur_ts ||
-            in->ts_end <= in->ts_start ||
-            (uint64_t)in->ts_end - in->ts_start > INT64_MAX
-        )
+        if (in->ts_start < cur_ts || in->ts_end <= in->ts_start)
            return AVERROR(EINVAL);
        cur_ts = in->ts_start;
        dt = in->ts_end - in->ts_start;
@@ -139,9 +139,6 @@ static int fic_decode_block(FICContext *ctx, GetBitContext *gb,
 {
    int i, num_coeff;

-    if (get_bits_left(gb) < 8)
-        return AVERROR_INVALIDDATA;
-
    /* Is it a skip block? */
    if (get_bits1(gb)) {
        *is_p = 1;
@@ -383,8 +380,6 @@ static int fic_decode_frame(AVCodecContext *avctx, void *data,
            slice_h      = FFALIGN(avctx->height - ctx->slice_h * (nslices - 1), 16);
        } else {
            slice_size = AV_RB32(src + tsize + FIC_HEADER_SIZE + slice * 4 + 4);
-            if (slice_size < slice_off)
-                return AVERROR_INVALIDDATA;
        }

        if (slice_size < slice_off || slice_size > msize)
@@ -138,17 +138,6 @@ int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t
    case STATE_BITPIX:
        CHECK_KEYWORD("BITPIX");
        CHECK_VALUE("BITPIX", bitpix);
-
-        switch(header->bitpix) {
-        case   8:
-        case  16:
-        case  32: case -32:
-        case  64: case -64: break;
-        default:
-            av_log(avcl, AV_LOG_ERROR, "invalid value of BITPIX %d\n", header->bitpix); \
-            return AVERROR_INVALIDDATA;
-        }
-
        dict_set_if_not_null(metadata, keyword, value);

        header->state = STATE_NAXIS;
@@ -143,7 +143,7 @@ static int fits_read_header(AVCodecContext *avctx, const uint8_t **ptr, FITSHead

    size = abs(header->bitpix) >> 3;
    for (i = 0; i < header->naxis; i++) {
-        if (size && header->naxisn[i] > SIZE_MAX / size) {
+        if (header->naxisn[i] > SIZE_MAX / size) {
            av_log(avctx, AV_LOG_ERROR, "unsupported size of FITS image");
            return AVERROR_INVALIDDATA;
        }
@@ -168,14 +168,6 @@ static int fits_read_header(AVCodecContext *avctx, const uint8_t **ptr, FITSHead
        header->data_min = (header->data_min - header->bzero) / header->bscale;
        header->data_max = (header->data_max - header->bzero) / header->bscale;
    }
-    if (!header->rgb && header->data_min >= header->data_max) {
-        if (header->data_min > header->data_max) {
-            av_log(avctx, AV_LOG_ERROR, "data min/max (%g %g) is invalid\n", header->data_min, header->data_max);
-            return AVERROR_INVALIDDATA;
-        }
-        av_log(avctx, AV_LOG_WARNING, "data min/max indicates a blank image\n");
-        header->data_max ++;
-    }

    return 0;
 }
@@ -900,7 +900,7 @@ static int flic_decode_frame_24BPP(AVCodecContext *avctx,
                        } else {
                            if (bytestream2_tell(&g2) + 2*byte_run > stream_ptr_after_chunk)
                                break;
-                            CHECK_PIXEL_PTR(3 * byte_run);
+                            CHECK_PIXEL_PTR(2 * byte_run);
                            for (j = 0; j < byte_run; j++, pixel_countdown--) {
                                pixel = bytestream2_get_le24(&g2);
                                AV_WL24(&pixels[pixel_ptr], pixel);
@@ -402,9 +402,6 @@ static int decode_frame(AVCodecContext *avctx, void *data,
    AVFrame *frame = data;
    int ret, y, x;

-    if (avpkt->size < 8)
-        return AVERROR_INVALIDDATA;
-
    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
        return ret;

@@ -72,64 +72,9 @@ static av_cold int gdv_decode_init(AVCodecContext *avctx)
    return 0;
 }

-static void scaleup(uint8_t *dst, const uint8_t *src, int w)
-{
-    int x;
-    for (x = 0; x < w - 7; x+=8) {
-        dst[x + 0] =
-        dst[x + 1] = src[(x>>1) + 0];
-        dst[x + 2] =
-        dst[x + 3] = src[(x>>1) + 1];
-        dst[x + 4] =
-        dst[x + 5] = src[(x>>1) + 2];
-        dst[x + 6] =
-        dst[x + 7] = src[(x>>1) + 3];
-    }
-    for (; x < w; x++) {
-        dst[x] = src[(x>>1)];
-    }
-}
-
-static void scaleup_rev(uint8_t *dst, const uint8_t *src, int w)
-{
-    int x;
-
-    for (x = w - 1; (x+1) & 7; x--) {
-        dst[x] = src[(x>>1)];
-    }
-    for (x -= 7; x >= 0; x -= 8) {
-        dst[x + 6] =
-        dst[x + 7] = src[(x>>1) + 3];
-        dst[x + 4] =
-        dst[x + 5] = src[(x>>1) + 2];
-        dst[x + 2] =
-        dst[x + 3] = src[(x>>1) + 1];
-        dst[x + 0] =
-        dst[x + 1] = src[(x>>1) + 0];
-    }
-}
-
-static void scaledown(uint8_t *dst, const uint8_t *src, int w)
-{
-    int x;
-    for (x = 0; x < w - 7; x+=8) {
-        dst[x + 0] = src[2*x + 0];
-        dst[x + 1] = src[2*x + 2];
-        dst[x + 2] = src[2*x + 4];
-        dst[x + 3] = src[2*x + 6];
-        dst[x + 4] = src[2*x + 8];
-        dst[x + 5] = src[2*x +10];
-        dst[x + 6] = src[2*x +12];
-        dst[x + 7] = src[2*x +14];
-    }
-    for (; x < w; x++) {
-        dst[x] = src[2*x];
-    }
-}
-
 static void rescale(GDVContext *gdv, uint8_t *dst, int w, int h, int scale_v, int scale_h)
 {
-    int j, y;
+    int j, y, x;

    if ((gdv->scale_v == scale_v) && (gdv->scale_h == scale_h)) {
        return;
@@ -141,7 +86,14 @@ static void rescale(GDVContext *gdv, uint8_t *dst, int w, int h, int scale_v, in
            uint8_t *dst1 = dst + PREAMBLE_SIZE + y * w;
            uint8_t *src1 = dst + PREAMBLE_SIZE + (y>>!!gdv->scale_h) * (w>>1);

-            scaleup_rev(dst1, src1, w);
+            for (x = w - 1; x >= 0 && !(x&1); x--) {
+                dst1[x] = src1[(x>>1)];
+            }
+
+            for (x--; x >= 0; x-=2) {
+                dst1[x  ] =
+                dst1[x+1] = src1[(x>>1)];
+            }
        }
    } else if (gdv->scale_h) {
        for (j = 0; j < h; j++) {
@@ -156,7 +108,9 @@ static void rescale(GDVContext *gdv, uint8_t *dst, int w, int h, int scale_v, in
        for (y = 0; y < (h>>1); y++) {
            uint8_t *dst1 = dst + PREAMBLE_SIZE + y * (w>>1);
            uint8_t *src1 = dst + PREAMBLE_SIZE + y*2 * w;
-            scaledown(dst1, src1, w>>1);
+            for (x = 0; x < (w>>1); x++) {
+                dst1[x] = src1[x*2];
+            }
        }
    } else if (scale_h) {
        for (y = 0; y < (h>>1); y++) {
@@ -167,7 +121,9 @@ static void rescale(GDVContext *gdv, uint8_t *dst, int w, int h, int scale_v, in
    } else if (scale_v) {
        for (y = 0; y < h; y++) {
            uint8_t *dst1 = dst + PREAMBLE_SIZE + y * w;
-            scaledown(dst1, dst1, w>>1);
+            for (x = 0; x < (w>>1); x++) {
+                dst1[x] = dst1[x*2];
+            }
        }
    }

@@ -294,8 +250,6 @@ static int decompress_5(AVCodecContext *avctx, unsigned skip)

    while (bytestream2_get_bytes_left_p(pb) > 0 && bytestream2_get_bytes_left(gb) > 0) {
        int tag = read_bits2(&bits, gb);
-        if (bytestream2_get_bytes_left(gb) < 1)
-            return AVERROR_INVALIDDATA;
        if (tag == 0) {
            bytestream2_put_byte(pb, bytestream2_get_byte(gb));
        } else if (tag == 1) {
@@ -475,8 +429,6 @@ static int gdv_decode_frame(AVCodecContext *avctx, void *data,
    if (pal && pal_size == AVPALETTE_SIZE)
        memcpy(gdv->pal, pal, AVPALETTE_SIZE);

-    if (compression < 2 && bytestream2_get_bytes_left(gb) < 256*3)
-        return AVERROR_INVALIDDATA;
    rescale(gdv, gdv->frame, avctx->width, avctx->height,
            !!(flags & 0x10), !!(flags & 0x20));

@@ -484,6 +436,8 @@ static int gdv_decode_frame(AVCodecContext *avctx, void *data,
    case 1:
        memset(gdv->frame + PREAMBLE_SIZE, 0, gdv->frame_size - PREAMBLE_SIZE);
    case 0:
+        if (bytestream2_get_bytes_left(gb) < 256*3)
+            return AVERROR_INVALIDDATA;
        for (i = 0; i < 256; i++) {
            unsigned r = bytestream2_get_byte(gb);
            unsigned g = bytestream2_get_byte(gb);
@@ -527,16 +481,19 @@ static int gdv_decode_frame(AVCodecContext *avctx, void *data,
        }
    } else {
        int sidx = PREAMBLE_SIZE, didx = 0;
-        int y;
+        int y, x;

        for (y = 0; y < avctx->height; y++) {
            if (!gdv->scale_v) {
                memcpy(dst + didx, gdv->frame + sidx, avctx->width);
            } else {
-                uint8_t *dst2 = dst + didx;
-                uint8_t *src2 = gdv->frame + sidx;
-
-                scaleup(dst2, src2, avctx->width);
+                for (x = 0; x < avctx->width - 1; x+=2) {
+                    dst[didx + x    ] =
+                    dst[didx + x + 1] = gdv->frame[sidx + (x>>1)];
+                }
+                for (; x < avctx->width; x++) {
+                    dst[didx + x] = gdv->frame[sidx + (x>>1)];
+                }
            }
            if (!gdv->scale_h || ((y & 1) == 1)) {
                sidx += !gdv->scale_v ? avctx->width : avctx->width/2;
@@ -49,8 +49,6 @@ extern const uint8_t ff_interleaved_dirac_golomb_vlc_code[256];

 /**
 * Read an unsigned Exp-Golomb code in the range 0 to 8190.
- *
- * @returns the read value or a negative error code.
 */
 static inline int get_ue_golomb(GetBitContext *gb)
 {
@@ -156,8 +156,8 @@ void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *
            av_log(h->avctx, AV_LOG_ERROR, "co located POCs unavailable\n");
            sl->col_parity = 1;
        } else
-            sl->col_parity = (FFABS(col_poc[0] - (int64_t)cur_poc) >=
-                              FFABS(col_poc[1] - (int64_t)cur_poc));
+        sl->col_parity = (FFABS(col_poc[0] - cur_poc) >=
+                          FFABS(col_poc[1] - cur_poc));
        ref1sidx =
        sidx     = sl->col_parity;
    // FL -> FL & differ parity
@@ -296,8 +296,7 @@ int ff_h264_init_poc(int pic_field_poc[2], int *pic_poc,
        if (picture_structure == PICT_FRAME)
            field_poc[1] += pc->delta_poc_bottom;
    } else if (sps->poc_type == 1) {
-        int abs_frame_num;
-        int64_t expected_delta_per_poc_cycle, expectedpoc;
+        int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
        int i;

        if (sps->poc_cycle_length != 0)
@@ -91,7 +91,7 @@ static int h264_redundant_pps_filter(AVBSFContext *bsf, AVPacket *out)
        if (nal->type == H264_NAL_PPS) {
            h264_redundant_pps_fixup_pps(ctx, nal->content);
            if (!au_has_sps) {
-                av_log(bsf, AV_LOG_VERBOSE, "Deleting redundant PPS "
+                av_log(ctx, AV_LOG_VERBOSE, "Deleting redundant PPS "
                       "at %"PRId64".\n", in->pts);
                ff_cbs_delete_unit(ctx->input, au, i);
            }
@@ -678,7 +678,7 @@ static void implicit_weight_table(const H264Context *h, H264SliceContext *sl, in
            cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
        }
        if (sl->ref_count[0] == 1 && sl->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
-            sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2LL * cur_poc) {
+            sl->ref_list[0][0].poc + (int64_t)sl->ref_list[1][0].poc == 2 * cur_poc) {
            sl->pwt.use_weight        = 0;
            sl->pwt.use_weight_chroma = 0;
            return;
@@ -1587,25 +1587,22 @@ int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
    pps->entropy_coding_sync_enabled_flag = get_bits1(gb);

    if (pps->tiles_enabled_flag) {
-        int num_tile_columns_minus1 = get_ue_golomb(gb);
-        int num_tile_rows_minus1    = get_ue_golomb(gb);
-
-        if (num_tile_columns_minus1 < 0 ||
-            num_tile_columns_minus1 >= sps->ctb_width - 1) {
+        pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
+        pps->num_tile_rows    = get_ue_golomb_long(gb) + 1;
+        if (pps->num_tile_columns <= 0 ||
+            pps->num_tile_columns >= sps->width) {
            av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
-                   num_tile_columns_minus1);
-            ret = num_tile_columns_minus1 < 0 ? num_tile_columns_minus1 : AVERROR_INVALIDDATA;
+                   pps->num_tile_columns - 1);
+            ret = AVERROR_INVALIDDATA;
            goto err;
        }
-        if (num_tile_rows_minus1 < 0 ||
-            num_tile_rows_minus1 >= sps->ctb_height - 1) {
+        if (pps->num_tile_rows <= 0 ||
+            pps->num_tile_rows >= sps->height) {
            av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
-                   num_tile_rows_minus1);
-            ret = num_tile_rows_minus1 < 0 ? num_tile_rows_minus1 : AVERROR_INVALIDDATA;
+                   pps->num_tile_rows - 1);
+            ret = AVERROR_INVALIDDATA;
            goto err;
        }
-        pps->num_tile_columns = num_tile_columns_minus1 + 1;
-        pps->num_tile_rows    = num_tile_rows_minus1    + 1;

        pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
        pps->row_height   = av_malloc_array(pps->num_tile_rows,    sizeof(*pps->row_height));
@@ -344,8 +344,8 @@ typedef struct HEVCPPS {
    uint8_t tiles_enabled_flag;
    uint8_t entropy_coding_sync_enabled_flag;

-    uint16_t num_tile_columns;   ///< num_tile_columns_minus1 + 1
-    uint16_t num_tile_rows;      ///< num_tile_rows_minus1 + 1
+    int num_tile_columns;   ///< num_tile_columns_minus1 + 1
+    int num_tile_rows;      ///< num_tile_rows_minus1 + 1
    uint8_t uniform_spacing_flag;
    uint8_t loop_filter_across_tiles_enabled_flag;

@@ -485,11 +485,6 @@ static int hls_slice_header(HEVCContext *s)

    // Coded parameters
    sh->first_slice_in_pic_flag = get_bits1(gb);
-    if (s->ref && sh->first_slice_in_pic_flag) {
-        av_log(s->avctx, AV_LOG_ERROR, "Two slices reporting being the first in the same frame.\n");
-        return 1; // This slice will be skiped later, do not corrupt state
-    }
-
    if ((IS_IDR(s) || IS_BLA(s)) && sh->first_slice_in_pic_flag) {
        s->seq_decode = (s->seq_decode + 1) & 0xff;
        s->max_ra     = INT_MAX;
@@ -2920,11 +2915,6 @@ static int decode_nal_unit(HEVCContext *s, const H2645NAL *nal)
        ret = hls_slice_header(s);
        if (ret < 0)
            return ret;
-        if (ret == 1) {
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
-        }
-

        if (
            (s->avctx->skip_frame >= AVDISCARD_BIDIR && s->sh.slice_type == HEVC_SLICE_B) ||
@@ -559,6 +559,8 @@ static av_always_inline int ff_hevc_nal_is_nonref(enum HEVCNALUnitType type)
    case HEVC_NAL_VCL_N10:
    case HEVC_NAL_VCL_N12:
    case HEVC_NAL_VCL_N14:
+    case HEVC_NAL_BLA_N_LP:
+    case HEVC_NAL_IDR_N_LP:
        return 1;
        break;
    default: break;
@@ -248,18 +248,13 @@ static int hqa_decode_frame(HQContext *ctx, AVFrame *pic, size_t data_size)
    int width, height, quant;
    const uint8_t *src = ctx->gbc.buffer;

-    if (bytestream2_get_bytes_left(&ctx->gbc) < 8 + 4*(num_slices + 1))
-        return AVERROR_INVALIDDATA;
-
    width  = bytestream2_get_be16(&ctx->gbc);
    height = bytestream2_get_be16(&ctx->gbc);

-    ret = ff_set_dimensions(ctx->avctx, width, height);
-    if (ret < 0)
-        return ret;
-
    ctx->avctx->coded_width         = FFALIGN(width,  16);
    ctx->avctx->coded_height        = FFALIGN(height, 16);
+    ctx->avctx->width               = width;
+    ctx->avctx->height              = height;
    ctx->avctx->bits_per_raw_sample = 8;
    ctx->avctx->pix_fmt             = AV_PIX_FMT_YUVA422P;

@@ -24,7 +24,6 @@
 #include "libavutil/common.h"
 #include "libavutil/parseutils.h"
 #include "htmlsubtitles.h"
-#include <ctype.h>

 static int html_color_parse(void *log_ctx, const char *str)
 {
@@ -45,32 +44,14 @@ static void rstrip_spaces_buf(AVBPrint *buf)
            buf->str[--buf->len] = 0;
 }

-/*
- * Fast code for scanning text enclosed in braces. Functionally
- * equivalent to this sscanf call:
- *
- * sscanf(in, "{\\an%*1u}%n", &len) >= 0 && len > 0
- */
-static int scanbraces(const char* in) {
-    if (strncmp(in, "{\\an", 4) != 0) {
-        return 0;
-    }
-    if (!isdigit(in[4])) {
-        return 0;
-    }
-    if (in[5] != '}') {
-        return 0;
-    }
-    return 1;
-}
-
 /* skip all {\xxx} substrings except for {\an%d}
   and all microdvd like styles such as {Y:xxx} */
 static void handle_open_brace(AVBPrint *dst, const char **inp, int *an, int *closing_brace_missing)
 {
+    int len = 0;
    const char *in = *inp;

-    *an += scanbraces(in);
+    *an += sscanf(in, "{\\an%*1u}%n", &len) >= 0 && len > 0;

    if (!*closing_brace_missing) {
        if (   (*an != 1 && in[1] == '\\')
@@ -93,34 +74,6 @@ struct font_tag {
    uint32_t color;
 };

-/*
- * Fast code for scanning the rest of a tag. Functionally equivalent to
- * this sscanf call:
- *
- * sscanf(in, "%127[^<>]>%n", buffer, lenp) == 2
- */
-static int scantag(const char* in, char* buffer, int* lenp) {
-    int len;
-
-    for (len = 0; len < 128; len++) {
-        const char c = *in++;
-        switch (c) {
-        case '\0':
-            return 0;
-        case '<':
-            return 0;
-        case '>':
-            buffer[len] = '\0';
-            *lenp = len+1;
-            return 1;
-        default:
-            break;
-        }
-        buffer[len] = c;
-    }
-    return 0;
-}
-
 /*
 * The general politic of the convert is to mask unsupported tags or formatting
 * errors (but still alert the user/subtitles writer with an error/warning)
@@ -202,7 +155,7 @@ int ff_htmlmarkup_to_ass(void *log_ctx, AVBPrint *dst, const char *in)

            len = 0;

-            if (scantag(in+tag_close+1, buffer, &len) && len > 0) {
+            if (sscanf(in+tag_close+1, "%127[^<>]>%n", buffer, &len) >= 1 && len > 0) {
                const int skip = len + tag_close;
                const char *tagname = buffer;
                while (*tagname == ' ') {
@@ -280,16 +280,6 @@ static int extract_header(AVCodecContext *const avctx,
        for (i = 0; i < 16; i++)
            s->tvdc[i] = bytestream_get_be16(&buf);

-        if (s->ham) {
-            if (s->bpp > 8) {
-                av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham);
-                return AVERROR_INVALIDDATA;
-            } if (s->ham != (s->bpp > 6 ? 6 : 4)) {
-                av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u, BPP: %u\n", s->ham, s->bpp);
-                return AVERROR_INVALIDDATA;
-            }
-        }
-
        if (s->masking == MASK_HAS_MASK) {
            if (s->bpp >= 8 && !s->ham) {
                avctx->pix_fmt = AV_PIX_FMT_RGB32;
@@ -317,6 +307,9 @@ static int extract_header(AVCodecContext *const avctx,
        if (!s->bpp || s->bpp > 32) {
            av_log(avctx, AV_LOG_ERROR, "Invalid number of bitplanes: %u\n", s->bpp);
            return AVERROR_INVALIDDATA;
+        } else if (s->ham >= 8) {
+            av_log(avctx, AV_LOG_ERROR, "Invalid number of hold bits for HAM: %u\n", s->ham);
+            return AVERROR_INVALIDDATA;
        }

        av_freep(&s->ham_buf);
@@ -378,8 +371,6 @@ static av_cold int decode_end(AVCodecContext *avctx)
    av_freep(&s->planebuf);
    av_freep(&s->ham_buf);
    av_freep(&s->ham_palbuf);
-    av_freep(&s->mask_buf);
-    av_freep(&s->mask_palbuf);
    av_freep(&s->video[0]);
    av_freep(&s->video[1]);
    av_freep(&s->pal);
@@ -1521,7 +1512,7 @@ static int decode_frame(AVCodecContext *avctx,
    buf_size -= bytestream2_tell(gb);
    desc = av_pix_fmt_desc_get(avctx->pix_fmt);

-    if (!s->init && avctx->bits_per_coded_sample <= 8 - (s->masking == MASK_HAS_MASK) &&
+    if (!s->init && avctx->bits_per_coded_sample <= 8 &&
        avctx->pix_fmt == AV_PIX_FMT_PAL8) {
        if ((res = cmap_read_palette(avctx, (uint32_t *)frame->data[1])) < 0)
            return res;
@@ -408,11 +408,11 @@ static void lsf2poly(int16_t *a, int16_t *lsf)

    a[0] = 4096;
    for (i = 5; i > 0; i--) {
-        tmp = f[0][6 - i] + (unsigned)f[1][6 - i] + 4096;
-        a[6 - i] = tmp >> 13;
+        tmp = f[0][6 - i] + (unsigned)f[1][6 - i];
+        a[6 - i] = (tmp + 4096) >> 13;

-        tmp = f[0][6 - i] - (unsigned)f[1][6 - i] + 4096;
-        a[5 + i] = tmp >> 13;
+        tmp = f[0][6 - i] - (unsigned)f[1][6 - i];
+        a[5 + i] = (tmp + 4096) >> 13;
    }
 }

@@ -724,7 +724,7 @@ static void construct_vector (
    int16_t cbvec0[SUBL];
    int16_t cbvec1[SUBL];
    int16_t cbvec2[SUBL];
-    unsigned a32;
+    int32_t a32;
    int16_t *gainPtr;
    int j;

@@ -747,7 +747,7 @@ static void construct_vector (
        a32 += SPL_MUL_16_16(*gainPtr++, cbvec1[j]);
        a32 += SPL_MUL_16_16(*gainPtr, cbvec2[j]);
        gainPtr -= 2;
-        decvector[j] = (int)(a32 + 8192) >> 14;
+        decvector[j] = (a32 + 8192) >> 14;
    }
 }

@@ -1303,8 +1303,7 @@ static int xcorr_coeff(int16_t *target, int16_t *regressor,
        pos += step;

        /* Do a +/- to get the next energy */
-        energy += (unsigned)step * ((*rp_end * *rp_end - *rp_beg * *rp_beg) >> shifts);
-
+        energy += step * ((*rp_end * *rp_end - *rp_beg * *rp_beg) >> shifts);
        rp_beg += step;
        rp_end += step;
    }
@@ -428,9 +428,8 @@ static int decode_frame(AVCodecContext *avctx, void *data,
            av_log(avctx, AV_LOG_ERROR, "Frame size change is unsupported.\n");
            return AVERROR_INVALIDDATA;
        }
-        ret = ff_set_dimensions(avctx, width, height);
-        if (ret < 0)
-            return ret;
+        avctx->width = width;
+        avctx->height = height;
    }

    s->changed_size = 1;
@@ -1260,7 +1260,7 @@ static int ipvideo_decode_frame(AVCodecContext *avctx,
            s->decoding_map_size = ((s->avctx->width / 8) * (s->avctx->height / 8)) * 2;
            s->decoding_map = buf + 8 + 14; /* 14 bits of op data */
            video_data_size -= s->decoding_map_size + 14;
-            if (video_data_size <= 0 || s->decoding_map_size == 0)
+            if (video_data_size <= 0)
                return AVERROR_INVALIDDATA;

            if (buf_size < 8 + s->decoding_map_size + 14 + video_data_size)
@@ -488,6 +488,12 @@ static int ivi_dec_tile_data_size(GetBitContext *gb)
 static int ivi_dc_transform(IVIBandDesc *band, int *prev_dc, int buf_offs,
                            int blk_size)
 {
+    int buf_size = band->pitch * band->aheight - buf_offs;
+    int min_size = (blk_size - 1) * band->pitch + blk_size;
+
+    if (min_size > buf_size)
+        return AVERROR_INVALIDDATA;
+
    band->dc_transform(prev_dc, band->buf + buf_offs,
                       band->pitch, blk_size);

@@ -718,11 +724,6 @@ static int ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band,
                if (ret < 0)
                    return ret;
            } else {
-                int buf_size = band->pitch * band->aheight - buf_offs;
-                int min_size = (blk_size - 1) * band->pitch + blk_size;
-
-                if (min_size > buf_size)
-                    return AVERROR_INVALIDDATA;
                /* block not coded */
                /* for intra blocks apply the dc slant transform */
                /* for inter - perform the motion compensation without delta */
@@ -247,11 +247,6 @@ static void init_band_stepsize(AVCodecContext *avctx,
        }
    }

-    if (band->f_stepsize > (INT_MAX >> 15)) {
-        band->f_stepsize = 0;
-        av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n");
-    }
-
    band->i_stepsize = band->f_stepsize * (1 << 15);

    /* FIXME: In OpenJPEG code stepsize = stepsize * 0.5. Why?
@@ -531,7 +531,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t)
    }

    for (i = 0; i < w * h; i++)
-        data[i] = (data[i] + ((1LL<<I_PRESHIFT)>>1)) >> I_PRESHIFT;
+        data[i] = (data[i] + ((1<<I_PRESHIFT)>>1)) >> I_PRESHIFT;
 }

 int ff_jpeg2000_dwt_init(DWTContext *s, int border[2][2],
@@ -163,19 +163,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
            av_log(avctx, AV_LOG_ERROR, "video size %d invalid\n", video_size);
            return AVERROR_INVALIDDATA;
        }
+        if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
+            return ret;

        if (video_type == 0 || video_type == 1) {
            GetBitContext gb;
            init_get_bits(&gb, buf, 8 * video_size);

-            if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
-                return ret;
-
-            if (avctx->height/8 * (avctx->width/8) > 4 * video_size) {
-                av_log(avctx, AV_LOG_ERROR, "Insufficient input data for dimensions\n");
-                return AVERROR_INVALIDDATA;
-            }
-
            for (j = 0; j < avctx->height; j += 8)
                for (i = 0; i < avctx->width; i += 8)
                    decode8x8(&gb,
@@ -185,11 +179,6 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
            buf += video_size;
        } else if (video_type == 2) {
            int v = *buf++;
-
-            av_frame_unref(s->frame);
-            if ((ret = ff_get_buffer(avctx, s->frame, AV_GET_BUFFER_FLAG_REF)) < 0)
-                return ret;
-
            for (j = 0; j < avctx->height; j++)
                memset(s->frame->data[0] + j * s->frame->linesize[0],
                       v, avctx->width);
@@ -505,8 +505,7 @@ static av_cold int aom_init(AVCodecContext *avctx,
    enccfg.g_h            = avctx->height;
    enccfg.g_timebase.num = avctx->time_base.num;
    enccfg.g_timebase.den = avctx->time_base.den;
-    enccfg.g_threads      =
-        FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 64);
+    enccfg.g_threads      = avctx->thread_count ? avctx->thread_count : av_cpu_count();

    if (ctx->lag_in_frames >= 0)
        enccfg.g_lag_in_frames = ctx->lag_in_frames;
@@ -49,16 +49,8 @@ static int oggvorbis_decode_init(AVCodecContext *avccontext) {
    vorbis_comment_init(&context->vc) ;

    if(p[0] == 0 && p[1] == 30) {
-        int sizesum = 0;
        for(i = 0; i < 3; i++){
            hsizes[i] = bytestream_get_be16((const uint8_t **)&p);
-            sizesum += 2 + hsizes[i];
-            if (sizesum > avccontext->extradata_size) {
-                av_log(avccontext, AV_LOG_ERROR, "vorbis extradata too small\n");
-                ret = AVERROR_INVALIDDATA;
-                goto error;
-            }
-
            headers[i] = p;
            p += hsizes[i];
        }
@@ -295,11 +295,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
        avpriv_request_sample(avctx, "LOCO codec version %i", version);
    }

-    if (l->lossy > 65536U) {
-        av_log(avctx, AV_LOG_ERROR, "lossy %i is too large\n", l->lossy);
-        return AVERROR_INVALIDDATA;
-    }
-
    l->mode = AV_RL32(avctx->extradata + 4);
    switch (l->mode) {
    case LOCO_CYUY2:
@@ -61,7 +61,7 @@ static int m101_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
    stride = AV_RL32(avctx->extradata + 5*4);

    if (avctx->pix_fmt == AV_PIX_FMT_YUV422P10)
-        min_stride = (avctx->width + 15) / 16 * 40;
+        min_stride = (avctx->width + 15) / 16 * 20;

    if (stride < min_stride || avpkt->size < stride * (uint64_t)avctx->height) {
        av_log(avctx, AV_LOG_ERROR, "stride (%d) is invalid for packet sized %d\n",
@@ -2630,7 +2630,7 @@ void ff_hevc_sao_edge_filter_8_msa(uint8_t *dst, uint8_t *src,
                                   int16_t *sao_offset_val,
                                   int eo, int width, int height)
 {
-    ptrdiff_t stride_src = (2 * MAX_PB_SIZE + AV_INPUT_BUFFER_PADDING_SIZE) / sizeof(uint8_t);
+    ptrdiff_t stride_src = (2 * 64 + 32) / sizeof(uint8_t);

    switch (eo) {
    case 0:
@@ -70,7 +70,8 @@ read_header:

    skip_bits(&hgb, 32); /* reserved zeros */

-    if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g')) {
+    if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g'))
+    {
        av_log(avctx, AV_LOG_WARNING, "not mjpeg-b (bad fourcc)\n");
        return AVERROR_INVALIDDATA;
    }
@@ -84,17 +85,19 @@ read_header:

    dqt_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "dqt is %d and size is %d\n");
    av_log(avctx, AV_LOG_DEBUG, "dqt offs: 0x%"PRIx32"\n", dqt_offs);
-    if (dqt_offs) {
+    if (dqt_offs)
+    {
        init_get_bits(&s->gb, buf_ptr+dqt_offs, (buf_end - (buf_ptr+dqt_offs))*8);
        s->start_code = DQT;
        if (ff_mjpeg_decode_dqt(s) < 0 &&
            (avctx->err_recognition & AV_EF_EXPLODE))
-            return AVERROR_INVALIDDATA;
+          return AVERROR_INVALIDDATA;
    }

    dht_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "dht is %d and size is %d\n");
    av_log(avctx, AV_LOG_DEBUG, "dht offs: 0x%"PRIx32"\n", dht_offs);
-    if (dht_offs) {
+    if (dht_offs)
+    {
        init_get_bits(&s->gb, buf_ptr+dht_offs, (buf_end - (buf_ptr+dht_offs))*8);
        s->start_code = DHT;
        ff_mjpeg_decode_dht(s);
@@ -102,7 +105,8 @@ read_header:

    sof_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "sof is %d and size is %d\n");
    av_log(avctx, AV_LOG_DEBUG, "sof offs: 0x%"PRIx32"\n", sof_offs);
-    if (sof_offs) {
+    if (sof_offs)
+    {
        init_get_bits(&s->gb, buf_ptr+sof_offs, (buf_end - (buf_ptr+sof_offs))*8);
        s->start_code = SOF0;
        if (ff_mjpeg_decode_sof(s) < 0)
@@ -113,23 +117,25 @@ read_header:
    av_log(avctx, AV_LOG_DEBUG, "sos offs: 0x%"PRIx32"\n", sos_offs);
    sod_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "sof is %d and size is %d\n");
    av_log(avctx, AV_LOG_DEBUG, "sod offs: 0x%"PRIx32"\n", sod_offs);
-    if (sos_offs) {
+    if (sos_offs)
+    {
        init_get_bits(&s->gb, buf_ptr + sos_offs,
                      8 * FFMIN(field_size, buf_end - buf_ptr - sos_offs));
        s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16));
        s->start_code = SOS;
        if (ff_mjpeg_decode_sos(s, NULL, 0, NULL) < 0 &&
            (avctx->err_recognition & AV_EF_EXPLODE))
-            return AVERROR_INVALIDDATA;
+          return AVERROR_INVALIDDATA;
    }

    if (s->interlaced) {
        s->bottom_field ^= 1;
        /* if not bottom field, do not output image yet */
-        if (s->bottom_field != s->interlace_polarity && second_field_offs) {
+        if (s->bottom_field != s->interlace_polarity && second_field_offs)
+        {
            buf_ptr = buf + second_field_offs;
            goto read_header;
-        }
+            }
    }

    //XXX FIXME factorize, this looks very similar to the EOI code
@@ -704,9 +704,7 @@ unk_pixfmt:
    }

    if ((s->rgb && !s->lossless && !s->ls) ||
-        (!s->rgb && s->ls && s->nb_components > 1) ||
-        (s->avctx->pix_fmt == AV_PIX_FMT_PAL8 && !s->ls)
-    ) {
+        (!s->rgb && s->ls && s->nb_components > 1)) {
        av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n");
        return AVERROR_PATCHWELCOME;
    }
@@ -1208,25 +1206,25 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
                            || v * mb_y + y >= s->height) {
                            // Nothing to do
                        } else if (bits<=8) {
-                            ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
-                            if(y==0 && toprow){
-                                if(x==0 && leftcol){
-                                    pred= 1 << (bits - 1);
-                                }else{
-                                    pred= ptr[-1];
-                                }
+                        ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
+                        if(y==0 && toprow){
+                            if(x==0 && leftcol){
+                                pred= 1 << (bits - 1);
                            }else{
-                                if(x==0 && leftcol){
-                                    pred= ptr[-linesize];
-                                }else{
-                                    PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
-                                }
+                                pred= ptr[-1];
                            }
+                        }else{
+                            if(x==0 && leftcol){
+                                pred= ptr[-linesize];
+                            }else{
+                                PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
+                            }
+                        }

-                            if (s->interlaced && s->bottom_field)
-                                ptr += linesize >> 1;
-                            pred &= mask;
-                            *ptr= pred + ((unsigned)dc << point_transform);
+                        if (s->interlaced && s->bottom_field)
+                            ptr += linesize >> 1;
+                        pred &= mask;
+                        *ptr= pred + ((unsigned)dc << point_transform);
                        }else{
                            ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
                            if(y==0 && toprow){
@@ -1195,7 +1195,7 @@ static int read_access_unit(AVCodecContext *avctx, void* data,
        }

        if (length < header_size + substr_header_size) {
-            av_log(m->avctx, AV_LOG_ERROR, "Insufficient data for headers\n");
+            av_log(m->avctx, AV_LOG_ERROR, "Insuffient data for headers\n");
            goto error;
        }

@@ -201,8 +201,6 @@ static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
    int i;

    i = (mp->codes_count == 1) ? 0 : get_vlc2(gb, mp->vlc.table, mp->max_codes_bits, 1);
-    if (i < 0)
-        return i;
    return mp->codes[i].delta;
 }

@@ -75,8 +75,8 @@ static int mov2textsub(AVBSFContext *ctx, AVPacket *pkt)
       return AVERROR_INVALIDDATA;
    }

-    pkt->size  = FFMIN(pkt->size - 2, AV_RB16(pkt->data));
    pkt->data += 2;
+    pkt->size  = FFMIN(pkt->size - 2, AV_RB16(pkt->data));

    return 0;
 }
@@ -1899,20 +1899,14 @@ static int mpeg4_decode_studio_block(MpegEncContext *s, int32_t block[64], int n
            code >>= 1;
            run = (1 << (additional_code_len - 1)) + code;
            idx += run;
-            if (idx > 63)
-                return AVERROR_INVALIDDATA;
            j = scantable[idx++];
            block[j] = sign ? 1 : -1;
        } else if (group >= 13 && group <= 20) {
            /* Level value (Table B.49) */
-            if (idx > 63)
-                return AVERROR_INVALIDDATA;
            j = scantable[idx++];
            block[j] = get_xbits(&s->gb, additional_code_len);
        } else if (group == 21) {
            /* Escape */
-            if (idx > 63)
-                return AVERROR_INVALIDDATA;
            j = scantable[idx++];
            additional_code_len = s->avctx->bits_per_raw_sample + s->dct_precision + 4;
            flc = get_bits(&s->gb, additional_code_len);
@@ -3062,8 +3056,6 @@ static int decode_studio_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb)
    if (get_bits_left(gb) <= 32)
        return 0;

-    s->partitioned_frame = 0;
-    s->interlaced_dct = 0;
    s->decode_mb = mpeg4_decode_studio_mb;

    decode_smpte_tc(ctx, gb);
@@ -78,8 +78,6 @@ static void mpeg_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
    ff_update_block_index(s);

    s->bdsp.clear_blocks(s->block[0]);
-    if (!s->chroma_y_shift)
-        s->bdsp.clear_blocks(s->block[6]);

    s->dest[0] = s->current_picture.f->data[0] +
                 s->mb_y * 16 * s->linesize +
@@ -101,7 +101,7 @@ static int mpegaudio_parse(AVCodecParserContext *s1,
                            "MP3ADU full parser");
                        *poutbuf = NULL;
                        *poutbuf_size = 0;
-                        return buf_size; /* parsers must not return error codes */
+                        return 0; /* parsers must not return error codes */
                    }

                    break;
@@ -23,7 +23,6 @@
 #include "libavutil/avassert.h"
 #include "libavutil/common.h"
 #include "libavutil/pixdesc.h"
-#include "libavutil/imgutils.h"

 #include "avcodec.h"
 #include "motion_est.h"
@@ -58,7 +57,6 @@ do {\
 int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
                            ScratchpadContext *sc, int linesize)
 {
-#   define EMU_EDGE_HEIGHT (4 * 70)
    int alloc_size = FFALIGN(FFABS(linesize) + 64, 32);

    if (avctx->hwaccel)
@@ -69,16 +67,13 @@ int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
        return AVERROR_PATCHWELCOME;
    }

-    if (av_image_check_size2(alloc_size, EMU_EDGE_HEIGHT, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)
-        return AVERROR(ENOMEM);
-
    // edge emu needs blocksize + filter length - 1
    // (= 17x17 for  halfpel / 21x21 for H.264)
    // VC-1 computes luma and chroma simultaneously and needs 19X19 + 9x9
    // at uvlinesize. It supports only YUV420 so 24x24 is enough
    // linesize * interlaced * MBsize
    // we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
-    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, sc->edge_emu_buffer, alloc_size, EMU_EDGE_HEIGHT,
+    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, sc->edge_emu_buffer, alloc_size, 4 * 70,
                      fail);

    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, me->scratchpad, alloc_size, 4 * 16 * 2,
@@ -412,14 +412,6 @@ int ff_msmpeg4_decode_picture_header(MpegEncContext * s)
 {
    int code;

-    // at minimum one bit per macroblock is required at least in a valid frame,
-    // we discard frames much smaller than this. Frames smaller than 1/8 of the
-    // smallest "black/skip" frame generally contain not much recoverable content
-    // while at the same time they have the highest computational requirements
-    // per byte
-    if (get_bits_left(&s->gb) * 8LL < (s->width+15)/16 * ((s->height+15)/16))
-        return AVERROR_INVALIDDATA;
-
    if(s->msmpeg4_version==1){
        int start_code = get_bits_long(&s->gb, 32);
        if(start_code!=0x00000100){
@@ -552,11 +552,6 @@ static int mss4_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
               "Empty frame found but it is not a skip frame.\n");
        return AVERROR_INVALIDDATA;
    }
-    mb_width  = FFALIGN(width,  16) >> 4;
-    mb_height = FFALIGN(height, 16) >> 4;
-
-    if (frame_type != SKIP_FRAME && 8*buf_size < 8*HEADER_SIZE + mb_width*mb_height)
-        return AVERROR_INVALIDDATA;

    if ((ret = ff_reget_buffer(avctx, c->pic)) < 0)
        return ret;
@@ -579,6 +574,9 @@ static int mss4_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

    if ((ret = init_get_bits8(&gb, buf + HEADER_SIZE, buf_size - HEADER_SIZE)) < 0)
        return ret;
+
+    mb_width  = FFALIGN(width,  16) >> 4;
+    mb_height = FFALIGN(height, 16) >> 4;
    dst[0] = c->pic->data[0];
    dst[1] = c->pic->data[1];
    dst[2] = c->pic->data[2];
@@ -62,9 +62,6 @@ static av_cold int msvideo1_decode_init(AVCodecContext *avctx)

    s->avctx = avctx;

-    if (avctx->width < 4 || avctx->height < 4)
-        return AVERROR_INVALIDDATA;
-
    /* figure out the colorspace based on the presence of a palette */
    if (s->avctx->bits_per_coded_sample == 8) {
        s->mode_8bit = 1;
@@ -601,11 +601,7 @@ int ff_nvdec_frame_params(AVCodecContext *avctx,
    frames_ctx->format            = AV_PIX_FMT_CUDA;
    frames_ctx->width             = (avctx->coded_width + 1) & ~1;
    frames_ctx->height            = (avctx->coded_height + 1) & ~1;
-    /*
-     * We add two extra frames to the pool to account for deinterlacing filters
-     * holding onto their frames.
-     */
-    frames_ctx->initial_pool_size = dpb_size + 2;
+    frames_ctx->initial_pool_size = dpb_size;

    frames_ctx->free = nvdec_free_dummy;
    frames_ctx->pool = av_buffer_pool_init(0, nvdec_alloc_dummy);
@@ -676,11 +676,6 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size,
             */
            break;
        case DISPLAY_SEGMENT:
-            if (*data_size) {
-                av_log(avctx, AV_LOG_ERROR, "Duplicate display segment\n");
-                ret = AVERROR_INVALIDDATA;
-                break;
-            }
            ret = display_end_segment(avctx, data, buf, segment_length);
            if (ret >= 0)
                *data_size = ret;
@@ -578,10 +578,6 @@ static int decode_ihdr_chunk(AVCodecContext *avctx, PNGDecContext *s,
    }
    s->color_type       = bytestream2_get_byte(&s->gb);
    s->compression_type = bytestream2_get_byte(&s->gb);
-    if (s->compression_type) {
-        av_log(avctx, AV_LOG_ERROR, "Invalid compression method %d\n", s->compression_type);
-        goto error;
-    }
    s->filter_type      = bytestream2_get_byte(&s->gb);
    s->interlace_type   = bytestream2_get_byte(&s->gb);
    bytestream2_skip(&s->gb, 4); /* crc */
@@ -58,13 +58,7 @@ static av_always_inline void transform4x4(vec_s16 src_01, vec_s16 src_23,
    e1 = vec_msums(src_02, trans4[2], zero);
    o1 = vec_msums(src_13, trans4[3], zero);

-    switch(shift) {
-    case  7: add = vec_sl(vec_splat_s32(1), vec_splat_u32( 7 - 1)); break;
-    case 10: add = vec_sl(vec_splat_s32(1), vec_splat_u32(10 - 1)); break;
-    case 12: add = vec_sl(vec_splat_s32(1), vec_splat_u32(12 - 1)); break;
-    default: abort();
-    }
-
+    add = vec_sl(vec_splat_s32(1), vec_splat_u32(shift - 1));
    e0 = vec_add(e0, add);
    e1 = vec_add(e1, add);

@@ -78,14 +72,7 @@ static av_always_inline void scale(vec_s32 res[4], vec_s16 res_packed[2],
                                   const int shift)
 {
    int i;
-    vec_u32 v_shift;
-
-    switch(shift) {
-    case  7: v_shift = vec_splat_u32(7) ; break;
-    case 10: v_shift = vec_splat_u32(10); break;
-    case 12: v_shift = vec_splat_u32(12); break;
-    default: abort();
-    }
+    vec_u32 v_shift = vec_splat_u32(shift);

    for (i = 0; i < 4; i++)
        res[i] = vec_sra(res[i], v_shift);
@@ -221,7 +221,6 @@ typedef struct ProresThreadData {
    DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE];
    DECLARE_ALIGNED(16, uint16_t, emu_buf)[16 * 16];
    int16_t custom_q[64];
-    int16_t custom_chroma_q[64];
    struct TrellisNode *nodes;
 } ProresThreadData;

@@ -232,7 +231,6 @@ typedef struct ProresContext {
    int16_t quants[MAX_STORED_Q][64];
    int16_t quants_chroma[MAX_STORED_Q][64];
    int16_t custom_q[64];
-    int16_t custom_chroma_q[64];
    const uint8_t *quant_mat;
    const uint8_t *quant_chroma_mat;
    const uint8_t *scantable;
@@ -575,7 +573,7 @@ static int encode_slice(AVCodecContext *avctx, const AVFrame *pic,
        qmat_chroma = ctx->quants_chroma[quant];
    } else {
        qmat = ctx->custom_q;
-        qmat_chroma = ctx->custom_chroma_q;
+        qmat_chroma = ctx->custom_q;
        for (i = 0; i < 64; i++) {
            qmat[i] = ctx->quant_mat[i] * quant;
            qmat_chroma[i] = ctx->quant_chroma_mat[i] * quant;
@@ -903,7 +901,7 @@ static int find_slice_quant(AVCodecContext *avctx,
                qmat_chroma = ctx->quants_chroma[q];
            } else {
                qmat = td->custom_q;
-                qmat_chroma = td->custom_chroma_q;
+                qmat_chroma = td->custom_q;
                for (i = 0; i < 64; i++) {
                    qmat[i] = ctx->quant_mat[i] * q;
                    qmat_chroma[i] = ctx->quant_chroma_mat[i] * q;
@@ -57,25 +57,27 @@ static int decompress(GetByteContext *gb, int size, PutByteContext *pb, const ui
    b = lut[2 * idx];

    while (1) {
-        if (bytestream2_get_bytes_left_p(pb) <= 0 || bytestream2_get_eof(pb))
+        if (bytestream2_get_bytes_left_p(pb) <= 0)
            return 0;
-        if ((b & 0xFF00u) != 0x8000u || (b & 0xFFu)) {
+        if (((b & 0xFF00u) != 0x8000u) || (b & 0xFFu)) {
            if ((b & 0xFF00u) != 0x8000u) {
                bytestream2_put_le16(pb, b);
-            } else {
+            } else if (b & 0xFFu) {
                idx = 0;
                for (int i = 0; i < (b & 0xFFu); i++)
                    bytestream2_put_le32(pb, 0);
            }
            c = b >> 16;
            if (c & 0xFF00u) {
+                c = (((c >> 8) & 0xFFu) | (c & 0xFF00)) & 0xF00F;
                fill = lut[2 * idx + 1];
-                if ((c & 0xF000u) == 0x1000) {
+                if ((c & 0xFF00u) == 0x1000) {
                    bytestream2_put_le16(pb, fill);
+                    c &= 0xFFFF00FFu;
                } else {
                    bytestream2_put_le32(pb, fill);
+                    c &= 0xFFFF00FFu;
                }
-                c = (c >> 8) & 0x0Fu;
            }
            while (c) {
                a <<= 4;
@@ -99,8 +101,6 @@ static int decompress(GetByteContext *gb, int size, PutByteContext *pb, const ui
            }
            idx = a >> 20;
            b = lut[2 * idx];
-            if (!b)
-                return AVERROR_INVALIDDATA;
            continue;
        }
        idx = 2;
@@ -161,9 +161,8 @@ static int decode_frame(AVCodecContext *avctx, void *data,
    memset(s->decbuffer, 0, s->size);
    bytestream2_init(&s->gb, avpkt->data, avpkt->size);
    bytestream2_init_writer(&s->pb, s->decbuffer, s->size);
-    ret = decompress(&s->gb, AV_RL32(avpkt->data + 28) >> 1, &s->pb, s->lut);
-    if (ret < 0)
-        return ret;
+
+    decompress(&s->gb, AV_RL32(avpkt->data + 28) >> 1, &s->pb, s->lut);
    vertical_predict((uint32_t *)s->decbuffer, 0, (uint32_t *)s->initial_line, s->stride, 1);
    vertical_predict((uint32_t *)s->decbuffer, s->stride, (uint32_t *)s->decbuffer, s->stride, avctx->height - 1);

@@ -408,12 +408,7 @@ static int fix_coding_method_array(int sb, int channels,
            }
            for (k = 0; k < run; k++) {
                if (j + k < 128) {
-                    int sbjk = sb + (j + k) / 64;
-                    if (sbjk > 29) {
-                        SAMPLES_NEEDED
-                        continue;
-                    }
-                    if (coding_method[ch][sbjk][(j + k) % 64] > coding_method[ch][sb][j]) {
+                    if (coding_method[ch][sb + (j + k) / 64][(j + k) % 64] > coding_method[ch][sb][j]) {
                        if (k > 0) {
                            SAMPLES_NEEDED
                            //not debugged, almost never used
@@ -1289,10 +1284,6 @@ static void qdm2_fft_decode_tones(QDM2Context *q, int duration,
            }
            offset += (n - 2);
        } else {
-            if (local_int_10 <= 2) {
-                av_log(NULL, AV_LOG_ERROR, "qdm2_fft_decode_tones() stuck\n");
-                return;
-            }
            offset += qdm2_get_vlc(gb, &vlc_tab_fft_tone_offset[local_int_8], 1, 2);
            while (offset >= (local_int_10 - 1)) {
                offset       += (1 - (local_int_10 - 1));
@@ -1704,19 +1695,13 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx)
    s->group_size = bytestream2_get_be32(&gb);
    s->fft_size = bytestream2_get_be32(&gb);
    s->checksum_size = bytestream2_get_be32(&gb);
-    if (s->checksum_size >= 1U << 28 || !s->checksum_size) {
-        av_log(avctx, AV_LOG_ERROR, "data block size invalid (%u)\n", s->checksum_size);
+    if (s->checksum_size >= 1U << 28) {
+        av_log(avctx, AV_LOG_ERROR, "data block size too large (%u)\n", s->checksum_size);
        return AVERROR_INVALIDDATA;
    }

    s->fft_order = av_log2(s->fft_size) + 1;

-    // Fail on unknown fft order
-    if ((s->fft_order < 7) || (s->fft_order > 9)) {
-        avpriv_request_sample(avctx, "Unknown FFT order %d", s->fft_order);
-        return AVERROR_PATCHWELCOME;
-    }
-
    // something like max decodable tones
    s->group_order = av_log2(s->group_size) + 1;
    s->frame_size = s->group_size / 16; // 16 iterations per super block
@@ -1750,6 +1735,11 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx)
    else
        s->coeff_per_sb_select = 2;

+    // Fail on unknown fft order
+    if ((s->fft_order < 7) || (s->fft_order > 9)) {
+        avpriv_request_sample(avctx, "Unknown FFT order %d", s->fft_order);
+        return AVERROR_PATCHWELCOME;
+    }
    if (s->fft_size != (1 << (s->fft_order - 1))) {
        av_log(avctx, AV_LOG_ERROR, "FFT size %d not power of 2.\n", s->fft_size);
        return AVERROR_INVALIDDATA;
@@ -577,9 +577,9 @@ static void add_noise(QDMCContext *s, int ch, int current_subframe)
    for (j = 2; j < s->subframe_size - 1; j++) {
        float rnd_re, rnd_im;

-        s->rndval = 214013U * s->rndval + 2531011;
+        s->rndval = 214013 * s->rndval + 2531011;
        rnd_im = ((s->rndval & 0x7FFF) - 16384.0f) * 0.000030517578f * s->noise2_buffer[j];
-        s->rndval = 214013U * s->rndval + 2531011;
+        s->rndval = 214013 * s->rndval + 2531011;
        rnd_re = ((s->rndval & 0x7FFF) - 16384.0f) * 0.000030517578f * s->noise2_buffer[j];
        im[j  ] += rnd_im;
        re[j  ] += rnd_re;
@@ -90,8 +90,6 @@ static void qpeg_decode_intra(QpegContext *qctx, uint8_t *dst,
                }
            }
        } else {
-            if (bytestream2_get_bytes_left(&qctx->buffer) < copy)
-                copy = bytestream2_get_bytes_left(&qctx->buffer);
            for(i = 0; i < copy; i++) {
                dst[filled++] = bytestream2_get_byte(&qctx->buffer);
                if (filled >= width) {
@@ -215,7 +215,7 @@ static int decode_move(AVCodecContext *avctx,
    bytestream2_skip(gb, 8);
    compression = bytestream2_get_le32(gb);

-    if (nb_moves > INT32_MAX / 16 || nb_moves > avctx->width * avctx->height)
+    if (nb_moves > INT32_MAX / 16)
        return AVERROR_INVALIDDATA;

    uncompressed_size = 16 * nb_moves;
@@ -353,8 +353,6 @@ static int decode_dlta(AVCodecContext *avctx,
    compression = bytestream2_get_le32(gb);

    if (compression == 1) {
-        if (w * h * s->bpp * 3 < uncompressed_size)
-            return AVERROR_INVALIDDATA;
        ret = decode_zlib(avctx, avpkt, size, uncompressed_size);
        if (ret < 0)
            return ret;
@@ -682,9 +680,6 @@ static int decode_frame(AVCodecContext *avctx,
    while (bytestream2_get_bytes_left(gb) > 0) {
        unsigned type, size = 0;

-        if (bytestream2_get_bytes_left(gb) < 8)
-            return AVERROR_INVALIDDATA;
-
        type = bytestream2_get_le32(gb);
        if (type == KBND || type == BNDL) {
            intra = type == KBND;
@@ -723,12 +718,12 @@ static int decode_frame(AVCodecContext *avctx,
            return ret;
    }

-    if (!s->frame2->data[0] || !s->frame1->data[0])
-        return AVERROR_INVALIDDATA;
-
    if ((ret = ff_get_buffer(avctx, s->frame, 0)) < 0)
        return ret;

+    if (!s->frame2->data[0] || !s->frame1->data[0])
+        return AVERROR_INVALIDDATA;
+
    copy_plane(avctx, s->frame2, s->frame);
    if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
        memcpy(s->frame->data[1], s->frame2->data[1], 1024);
@@ -73,12 +73,13 @@ typedef struct RpzaContext {
 static int rpza_decode_stream(RpzaContext *s)
 {
    int width = s->avctx->width;
-    int stride, row_inc, ret;
+    int stride = s->frame->linesize[0] / 2;
+    int row_inc = stride - 4;
    int chunk_size;
    uint16_t colorA = 0, colorB;
    uint16_t color4[4];
    uint16_t ta, tb;
-    uint16_t *pixels;
+    uint16_t *pixels = (uint16_t *)s->frame->data[0];

    int row_ptr = 0;
    int pixel_ptr = 0;
@@ -105,15 +106,6 @@ static int rpza_decode_stream(RpzaContext *s)
    /* Number of 4x4 blocks in frame. */
    total_blocks = ((s->avctx->width + 3) / 4) * ((s->avctx->height + 3) / 4);

-    if (total_blocks / 32 > bytestream2_get_bytes_left(&s->gb))
-        return AVERROR_INVALIDDATA;
-
-    if ((ret = ff_reget_buffer(s->avctx, s->frame)) < 0)
-        return ret;
-    pixels = (uint16_t *)s->frame->data[0];
-    stride = s->frame->linesize[0] / 2;
-    row_inc = stride - 4;
-
    /* Process chunk data */
    while (bytestream2_get_bytes_left(&s->gb)) {
        uint8_t opcode = bytestream2_get_byte(&s->gb); /* Get opcode */
@@ -264,6 +256,9 @@ static int rpza_decode_frame(AVCodecContext *avctx,

    bytestream2_init(&s->gb, avpkt->data, avpkt->size);

+    if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
+        return ret;
+
    ret = rpza_decode_stream(s);
    if (ret < 0)
        return ret;
@@ -198,12 +198,6 @@ static int rscc_decode_frame(AVCodecContext *avctx, void *data,
        /* If necessary, uncompress tiles, and hijack the bytestream reader */
        if (packed_tiles_size != tiles_nb * TILE_SIZE) {
            uLongf length = tiles_nb * TILE_SIZE;
-
-            if (bytestream2_get_bytes_left(gbc) < packed_tiles_size) {
-                ret = AVERROR_INVALIDDATA;
-                goto end;
-            }
-
            inflated_tiles = av_malloc(length);
            if (!inflated_tiles) {
                ret = AVERROR(ENOMEM);
@@ -388,9 +388,9 @@ static int rv20_decode_picture_header(RVDecContext *rv)
            // attempt to keep aspect during typical resolution switches
            if (!old_aspect.num)
                old_aspect = (AVRational){1, 1};
-            if (2 * (int64_t)new_w * s->height == (int64_t)new_h * s->width)
+            if (2 * new_w * s->height == new_h * s->width)
                s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){2, 1});
-            if ((int64_t)new_w * s->height == 2 * (int64_t)new_h * s->width)
+            if (new_w * s->height == 2 * new_h * s->width)
                s->avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){1, 2});

            ret = ff_set_dimensions(s->avctx, new_w, new_h);
@@ -34,36 +34,32 @@
 static SoftFloat sbr_sum_square_c(int (*x)[2], int n)
 {
    SoftFloat ret;
-    uint64_t accu = 0, round;
+    uint64_t accu, round;
    uint64_t accu0 = 0, accu1 = 0, accu2 = 0, accu3 = 0;
    int i, nz, nz0;
    unsigned u;

-    nz = 0;
    for (i = 0; i < n; i += 2) {
+        // Larger values are inavlid and could cause overflows of accu.
+        av_assert2(FFABS(x[i + 0][0]) >> 30 == 0);
        accu0 += (int64_t)x[i + 0][0] * x[i + 0][0];
+        av_assert2(FFABS(x[i + 0][1]) >> 30 == 0);
        accu1 += (int64_t)x[i + 0][1] * x[i + 0][1];
+        av_assert2(FFABS(x[i + 1][0]) >> 30 == 0);
        accu2 += (int64_t)x[i + 1][0] * x[i + 1][0];
+        av_assert2(FFABS(x[i + 1][1]) >> 30 == 0);
        accu3 += (int64_t)x[i + 1][1] * x[i + 1][1];
-        if ((accu0|accu1|accu2|accu3) > UINT64_MAX - INT32_MIN*(int64_t)INT32_MIN || i+2>=n) {
-            accu0 >>= nz;
-            accu1 >>= nz;
-            accu2 >>= nz;
-            accu3 >>= nz;
-            while ((accu0|accu1|accu2|accu3) > (UINT64_MAX - accu) >> 2) {
-                accu0 >>= 1;
-                accu1 >>= 1;
-                accu2 >>= 1;
-                accu3 >>= 1;
-                accu  >>= 1;
-                nz ++;
-            }
-            accu += accu0 + accu1 + accu2 + accu3;
-            accu0 = accu1 = accu2 = accu3 = 0;
-        }
    }

-    nz0 = 15 - nz;
+    nz0 = 15;
+    while ((accu0|accu1|accu2|accu3) >> 62) {
+        accu0 >>= 1;
+        accu1 >>= 1;
+        accu2 >>= 1;
+        accu3 >>= 1;
+        nz0 --;
+    }
+    accu = accu0 + accu1 + accu2 + accu3;

    u = accu >> 32;
    if (u) {
@@ -512,7 +512,7 @@ static int decompress_p(AVCodecContext *avctx,
 {
    SCPRContext *s = avctx->priv_data;
    GetByteContext *gb = &s->gb;
-    int ret, temp = 0, min, max, x, y, cx = 0, cx1 = 0;
+    int ret, temp, min, max, x, y, cx = 0, cx1 = 0;
    int backstep = linesize - avctx->width;

    if (bytestream2_get_byte(gb) == 0)
@@ -382,7 +382,7 @@ static int decode_subframe_lpc(ShortenContext *s, int command, int channel,
    /* subtract offset from previous samples to use in prediction */
    if (command == FN_QLPC && coffset)
        for (i = -pred_order; i < 0; i++)
-            s->decoded[channel][i] -= (unsigned)coffset;
+            s->decoded[channel][i] -= coffset;

    /* decode residual and do LPC prediction */
    init_sum = pred_order ? (command == FN_QLPC ? s->lpcqoffset : 0) : coffset;
@@ -397,7 +397,7 @@ static int decode_subframe_lpc(ShortenContext *s, int command, int channel,
    /* add offset to current samples */
    if (command == FN_QLPC && coffset)
        for (i = 0; i < s->blocksize; i++)
-            s->decoded[channel][i] += (unsigned)coffset;
+            s->decoded[channel][i] += coffset;

    return 0;
 }
@@ -1183,7 +1183,6 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
        GetBitContext gb;
        int frame_size_code;
        int unk0, unk1, unk2, unk3, unk4;
-        int w,h;

        size = AV_RB32(&extradata[4]);
        if (size > extradata_end - extradata - 8) {
@@ -1196,41 +1195,38 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
        frame_size_code = get_bits(&gb, 3);
        switch (frame_size_code) {
        case 0:
-            w = 160;
-            h = 120;
+            avctx->width  = 160;
+            avctx->height = 120;
            break;
        case 1:
-            w = 128;
-            h =  96;
+            avctx->width  = 128;
+            avctx->height =  96;
            break;
        case 2:
-            w = 176;
-            h = 144;
+            avctx->width  = 176;
+            avctx->height = 144;
            break;
        case 3:
-            w = 352;
-            h = 288;
+            avctx->width  = 352;
+            avctx->height = 288;
            break;
        case 4:
-            w = 704;
-            h = 576;
+            avctx->width  = 704;
+            avctx->height = 576;
            break;
        case 5:
-            w = 240;
-            h = 180;
+            avctx->width  = 240;
+            avctx->height = 180;
            break;
        case 6:
-            w = 320;
-            h = 240;
+            avctx->width  = 320;
+            avctx->height = 240;
            break;
        case 7:
-            w = get_bits(&gb, 12);
-            h = get_bits(&gb, 12);
+            avctx->width  = get_bits(&gb, 12);
+            avctx->height = get_bits(&gb, 12);
            break;
        }
-        ret = ff_set_dimensions(avctx, w, h);
-        if (ret < 0)
-            goto fail;

        s->halfpel_flag  = get_bits1(&gb);
        s->thirdpel_flag = get_bits1(&gb);
--- a/Show More
+++ b/Show More
@@ -1 +1 @@
 .1.4
 .0.git