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Author SHA1 Message Date
Andreas Rheinhardt
aa483bc422 avcodec/x86/bswapdsp: Avoid aligned vs unaligned codepaths for AVX2 
For modern cpus (like those supporting AVX2) loads and stores
using the unaligned versions of instructions are as fast
as aligned ones if the address is aligned, so remove
the aligned AVX2 version (and the alignment check) and just
use the unaligned one.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-27 18:25:43 +01:00
Andreas Rheinhardt
55afe49dd0 avcodec/x86/bswapdsp: combine shifting, avoid check for AVX2 
This avoids a check and a shift if >=8 elements are processed;
it adds a check if < 8 elements are processed (which should
be rare).
No change in benchmarks here.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-27 18:25:31 +01:00
Andreas Rheinhardt
3e6fa5153e avcodec/x86/bswapdsp: Avoid register copies 
No change in benchmarks here.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-27 18:25:01 +01:00
Zhao Zhili
86d2fae59f avcodec: use int instead of enum for AVOption fields 
AVOption with AV_OPT_TYPE_INT assumes the field is int (4 bytes),
but enum size is implementation-defined and may be smaller.
This can cause memory corruption when AVOption writes 4 bytes
to a field that is only 1-2 bytes, potentially overwriting
adjacent struct members.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
 2026-02-26 11:40:09 +08:00
Ling, Edison
00d3417b71 avcodec/d3d12va_encode: Add H264 entropy coder parameter support 
Add parameter `coder` for users to select entropy coding in D3D12 H264
encoding.

Named constants `cabac` (1) and `cavlc` (0) are supported.
Default is CABAC (1). If the driver does not support CABAC, a warning is
logged and encoding falls back to CAVLC.

Usage:
  CABAC (default): `-coder cabac`  or  `-coder 1`
  CAVLC:           `-coder cavlc`  or  `-coder 0`

Sample command line:
```
  ffmpeg -hwaccel d3d12va -hwaccel_output_format d3d12 -i input.mp4 -c:v h264_d3d12va -coder cavlc -y output.mp4
```
 2026-02-26 02:19:21 +00:00
Werner Robitza
5ba2525c7a avcodec/libsvtav1: enable 2-pass encoding 
This patch enables two-pass encoding for libsvtav1 by implementing
support for AV_CODEC_FLAG_PASS1 and AV_CODEC_FLAG_PASS2.

Previously, users requiring two-pass encoding with SVT-AV1 had to use
the standalone SvtAv1EncApp tool. This patch allows 2-pass encoding
directly through FFmpeg.

Based on patch by Fredrik Lundkvist, with review feedback from James
Almer and Andreas Rheinhardt.
See: https://ffmpeg.org/pipermail/ffmpeg-devel/2024-May/327452.html

Changes:

- Use AV_BASE64_DECODE_SIZE macro for buffer size calculation
- Allocate own buffer for rc_stats_buffer (non-ownership pointer)
- Error handling with buffer cleanup

Signed-off-by: Werner Robitza <werner.robitza@gmail.com>
 2026-02-25 16:43:53 +01:00
Andreas Rheinhardt
dc65dcec22 avcodec/vvc/inter: Combine offsets early 
For bi-predicted weighted averages, only the sum
of the two offsets is ever used, so add the two early.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-25 12:08:33 +01:00
stevxiao
fc7c38f9da avcodec/d3d12va_encode: add detailed ValidationFlags error reporting for video encoders check feature support 
Improves error diagnostics for D3D12 video encoders check feature support by adding
detailed ValidationFlags reporting when driver validation fails.

This made it easy for users to identify which specific feature was
unsupported without manually decoding the flags.

Signed-off-by: younengxiao <steven.xiao@amd.com>
 2026-02-25 08:47:14 +00:00
James Almer
145f6e5878 avcodec/cbs_h2645: split into separate files per module 
This file is becoming too bloated and hard to read, so split it into separate
files, each having codec specific methods.
This will also speed up compilation when using several concurrent jobs.

Signed-off-by: James Almer <jamrial@gmail.com>
 2026-02-24 10:32:20 -03:00
Michael Niedermayer
7761b8fbac
avcodec/imm5: Dont pass EAGAIN on as is 
Fixes: Assertion consumed != (-(11)) failed at libavcodec/decode.c:465
Fixes: 471587358/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IMM5_fuzzer-4737412376100864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 23:58:11 +01:00
Michael Niedermayer
302f198ba5
avcodec/mjpegdec: Check for multiple exif 
Fixes: memleak
Fixes: 477993717/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AMV_DEC_fuzzer-4515108431921152

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 23:52:37 +01:00
Michael Niedermayer
2ab23ec729
avcodec/interplayacm: Check input for fill_block() 
Fixes: Timeout
Fixes: 476763877/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_INTERPLAY_ACM_fuzzer-4515681843609600

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 23:50:49 +01:00
Michael Niedermayer
538824fd84
avcodec/hdrdec: Check input size before buffer allocation 
Fixes: Timeout
Fixes: 471948155/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HDR_DEC_fuzzer-5679690418552832

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 23:28:09 +01:00
Michael Niedermayer
55bb6e2646
avcodec/tmv: Move space check before buffer allocation 
Fixes: Timeout
Fixes: 471664630/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TMV_fuzzer-5291752530706432

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 23:26:20 +01:00
Michael Niedermayer
4446dfb0e3
avcodec/flashsv: Check for input space before (re)allocating frame 
Fixes: Timeout
Fixes: 471605680/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLASHSV2_DEC_fuzzer-6210773459468288
Fixes: 471605920/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_FLASHSV_DEC_fuzzer-6230719287590912

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 22:59:44 +01:00
Michael Niedermayer
40cafc25cf
avcodec/mdec: Check input space vs minimal block size 
Fixes: Timeout
Fixes: 481006706/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MDEC_fuzzer-6122832651419648

Found-by:  continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 22:54:38 +01:00
Michael Niedermayer
73681f888d
avcodec/h264_parser: Check remaining input length in loop in scan_mmco_reset() 
Fixes: read of uninitialized memory
Fixes: 476177761/clusterfuzz-testcase-minimized-ffmpeg_dem_H264_fuzzer-6400884824408064

Found-by:  continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 22:43:28 +01:00
Marvin Scholz
fba9fc0c6b lavc: wmadec: limit variable scopes 
Moves the loop variable declarations to the actual loops,
narrowing their scopes.
 2026-02-23 15:29:27 +00:00
Marvin Scholz
d219be03d6 lavc: wmadec: assert channels count 
This should never exceed MAX_CHANNELS, else there will be several
out of bounds writes.
 2026-02-23 15:29:27 +00:00
Lynne
baad75cafa aacdec_usac: add support for parsing Mpsp212 (MPEG surround) 
This commit adds the full bitstream parsing for Mps212.
 2026-02-23 07:57:57 +01:00
Lynne
86977fdb6b aacdec_tab: add Mps212 tables 
To be used in the following commit.
 2026-02-23 07:57:57 +01:00
Lynne
a4ab4a98c4 aacdec_tab: split up tables init 2026-02-23 07:57:57 +01:00
Michael Niedermayer
7e10579f49 avcodec/exr: fix AVERROR typo 
Fixes: out of array read
Fixes: 485866440/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_EXR_DEC_fuzzer-4520520419966976

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-23 01:44:49 +00:00
Andreas Rheinhardt
53a9a34e23 avcodec/snow: Reduce sizeof(SnowContext) 
Each SubBand currently contains an array of 519 uint8_t[32],
yet most of these are unused: For both the decoder and the
encoder, at most 34 contexts are actually used: The only
variable index is context+2, where context is the result
of av_log2() and therefore in the 0..31 range.

There are also several accesses using compile-time indices,
the highest of which is 30. FATE passes with 31 contexts
and maybe these are enough, but I don't know.

Reducing the number to 34 reduces sizeof(SnowContext)
from 2141664B to 155104B here (on x64).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 22:05:16 +01:00
Andreas Rheinhardt
bb92009386 avcodec/snow: Only allocate emu_edge_buffer for encoder 
Also allocate it during init and move it to the encoder's context.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 22:05:15 +01:00
Lynne
13e063ceec
vulkan/ffv1: properly initialize the linecache 2026-02-22 03:39:23 +01:00
Michael Niedermayer
99515a3342 avcodec/jpeg2000htdec: Check Lcup and Lref 
Fixes: use of uninitialized memory
Fixes: 482494999/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_DEC_fuzzer-6467586186608640

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-22 02:31:06 +00:00
Andreas Rheinhardt
6c1c1720cf avcodec/x86/vvc/dsp_init: Mark dsp init function as av_cold 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 01:05:12 +01:00
Andreas Rheinhardt
af3f8f5bd2 avcodec/x86/vvc/of: Break dependency chain 
Don't extract and update one word of one and the same register
at a time; use separate src and dst registers, so that pextrw
and bsr can be done in parallel. Also use movd instead of pinsrw
for the first word.

Old benchmarks:
apply_bdof_8_8x16_c:                                  3275.2 ( 1.00x)
apply_bdof_8_8x16_avx2:                                487.6 ( 6.72x)
apply_bdof_8_16x8_c:                                  3243.1 ( 1.00x)
apply_bdof_8_16x8_avx2:                                284.4 (11.40x)
apply_bdof_8_16x16_c:                                 6501.8 ( 1.00x)
apply_bdof_8_16x16_avx2:                               570.0 (11.41x)
apply_bdof_10_8x16_c:                                 3286.5 ( 1.00x)
apply_bdof_10_8x16_avx2:                               461.7 ( 7.12x)
apply_bdof_10_16x8_c:                                 3274.5 ( 1.00x)
apply_bdof_10_16x8_avx2:                               271.4 (12.06x)
apply_bdof_10_16x16_c:                                6590.0 ( 1.00x)
apply_bdof_10_16x16_avx2:                              543.9 (12.12x)
apply_bdof_12_8x16_c:                                 3307.6 ( 1.00x)
apply_bdof_12_8x16_avx2:                               462.2 ( 7.16x)
apply_bdof_12_16x8_c:                                 3287.4 ( 1.00x)
apply_bdof_12_16x8_avx2:                               271.8 (12.10x)
apply_bdof_12_16x16_c:                                6465.7 ( 1.00x)
apply_bdof_12_16x16_avx2:                              543.8 (11.89x)

New benchmarks:
apply_bdof_8_8x16_c:                                  3255.7 ( 1.00x)
apply_bdof_8_8x16_avx2:                                349.3 ( 9.32x)
apply_bdof_8_16x8_c:                                  3262.5 ( 1.00x)
apply_bdof_8_16x8_avx2:                                214.8 (15.19x)
apply_bdof_8_16x16_c:                                 6471.6 ( 1.00x)
apply_bdof_8_16x16_avx2:                               429.8 (15.06x)
apply_bdof_10_8x16_c:                                 3227.7 ( 1.00x)
apply_bdof_10_8x16_avx2:                               321.6 (10.04x)
apply_bdof_10_16x8_c:                                 3250.2 ( 1.00x)
apply_bdof_10_16x8_avx2:                               201.2 (16.16x)
apply_bdof_10_16x16_c:                                6476.5 ( 1.00x)
apply_bdof_10_16x16_avx2:                              400.9 (16.16x)
apply_bdof_12_8x16_c:                                 3230.7 ( 1.00x)
apply_bdof_12_8x16_avx2:                               321.8 (10.04x)
apply_bdof_12_16x8_c:                                 3210.5 ( 1.00x)
apply_bdof_12_16x8_avx2:                               200.9 (15.98x)
apply_bdof_12_16x16_c:                                6474.5 ( 1.00x)
apply_bdof_12_16x16_avx2:                              400.2 (16.18x)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 01:05:12 +01:00
Andreas Rheinhardt
19dc7b79a4 avcodec/x86/vvc/of: Unify shuffling 
One can use the same shuffles for the width 8 and width 16
case if one also changes the permutation in vpermd (that always
follows pshufb for width 16).

This also allows to load it before checking width.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 01:03:22 +01:00
Andreas Rheinhardt
8e82416434 avcodec/x86/vvc/of: Avoid unused register 
Avoids a push+pop.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 01:02:20 +01:00
Andreas Rheinhardt
81fb70c833 avcodec/x86/vvc/mc,dsp_init: Avoid pointless wrappers for w_avg 
They only add overhead (in form of another function call,
sign-extending some parameters to 64bit (although the upper
bits are not used at all) and rederiving the actual number
of bits (from the maximum value (1<<bpp)-1)).

Old benchmarks:
w_avg_8_2x2_c:                                          16.4 ( 1.00x)
w_avg_8_2x2_avx2:                                       12.9 ( 1.27x)
w_avg_8_4x4_c:                                          48.0 ( 1.00x)
w_avg_8_4x4_avx2:                                       14.9 ( 3.23x)
w_avg_8_8x8_c:                                         168.2 ( 1.00x)
w_avg_8_8x8_avx2:                                       22.4 ( 7.49x)
w_avg_8_16x16_c:                                       396.5 ( 1.00x)
w_avg_8_16x16_avx2:                                     47.9 ( 8.28x)
w_avg_8_32x32_c:                                      1466.3 ( 1.00x)
w_avg_8_32x32_avx2:                                    172.8 ( 8.48x)
w_avg_8_64x64_c:                                      5629.3 ( 1.00x)
w_avg_8_64x64_avx2:                                    678.7 ( 8.29x)
w_avg_8_128x128_c:                                   22122.4 ( 1.00x)
w_avg_8_128x128_avx2:                                 2743.5 ( 8.06x)
w_avg_10_2x2_c:                                         18.7 ( 1.00x)
w_avg_10_2x2_avx2:                                      13.1 ( 1.43x)
w_avg_10_4x4_c:                                         50.3 ( 1.00x)
w_avg_10_4x4_avx2:                                      15.9 ( 3.17x)
w_avg_10_8x8_c:                                        109.3 ( 1.00x)
w_avg_10_8x8_avx2:                                      20.6 ( 5.30x)
w_avg_10_16x16_c:                                      395.5 ( 1.00x)
w_avg_10_16x16_avx2:                                    44.8 ( 8.83x)
w_avg_10_32x32_c:                                     1534.2 ( 1.00x)
w_avg_10_32x32_avx2:                                   141.4 (10.85x)
w_avg_10_64x64_c:                                     6003.6 ( 1.00x)
w_avg_10_64x64_avx2:                                   557.4 (10.77x)
w_avg_10_128x128_c:                                  23722.7 ( 1.00x)
w_avg_10_128x128_avx2:                                2205.0 (10.76x)
w_avg_12_2x2_c:                                         18.6 ( 1.00x)
w_avg_12_2x2_avx2:                                      13.1 ( 1.42x)
w_avg_12_4x4_c:                                         52.2 ( 1.00x)
w_avg_12_4x4_avx2:                                      16.1 ( 3.24x)
w_avg_12_8x8_c:                                        109.2 ( 1.00x)
w_avg_12_8x8_avx2:                                      20.6 ( 5.29x)
w_avg_12_16x16_c:                                      396.1 ( 1.00x)
w_avg_12_16x16_avx2:                                    45.0 ( 8.81x)
w_avg_12_32x32_c:                                     1532.6 ( 1.00x)
w_avg_12_32x32_avx2:                                   142.1 (10.79x)
w_avg_12_64x64_c:                                     6002.2 ( 1.00x)
w_avg_12_64x64_avx2:                                   557.3 (10.77x)
w_avg_12_128x128_c:                                  23748.7 ( 1.00x)
w_avg_12_128x128_avx2:                                2206.4 (10.76x)

New benchmarks:
w_avg_8_2x2_c:                                          16.0 ( 1.00x)
w_avg_8_2x2_avx2:                                        9.3 ( 1.71x)
w_avg_8_4x4_c:                                          48.4 ( 1.00x)
w_avg_8_4x4_avx2:                                       12.4 ( 3.91x)
w_avg_8_8x8_c:                                         168.7 ( 1.00x)
w_avg_8_8x8_avx2:                                       21.1 ( 8.00x)
w_avg_8_16x16_c:                                       394.5 ( 1.00x)
w_avg_8_16x16_avx2:                                     46.2 ( 8.54x)
w_avg_8_32x32_c:                                      1456.3 ( 1.00x)
w_avg_8_32x32_avx2:                                    171.8 ( 8.48x)
w_avg_8_64x64_c:                                      5636.2 ( 1.00x)
w_avg_8_64x64_avx2:                                    676.9 ( 8.33x)
w_avg_8_128x128_c:                                   22129.1 ( 1.00x)
w_avg_8_128x128_avx2:                                 2734.3 ( 8.09x)
w_avg_10_2x2_c:                                         18.7 ( 1.00x)
w_avg_10_2x2_avx2:                                      10.3 ( 1.82x)
w_avg_10_4x4_c:                                         50.8 ( 1.00x)
w_avg_10_4x4_avx2:                                      13.4 ( 3.79x)
w_avg_10_8x8_c:                                        109.7 ( 1.00x)
w_avg_10_8x8_avx2:                                      20.4 ( 5.38x)
w_avg_10_16x16_c:                                      395.2 ( 1.00x)
w_avg_10_16x16_avx2:                                    41.7 ( 9.48x)
w_avg_10_32x32_c:                                     1535.6 ( 1.00x)
w_avg_10_32x32_avx2:                                   137.9 (11.13x)
w_avg_10_64x64_c:                                     6002.1 ( 1.00x)
w_avg_10_64x64_avx2:                                   548.5 (10.94x)
w_avg_10_128x128_c:                                  23742.7 ( 1.00x)
w_avg_10_128x128_avx2:                                2179.8 (10.89x)
w_avg_12_2x2_c:                                         18.9 ( 1.00x)
w_avg_12_2x2_avx2:                                      10.3 ( 1.84x)
w_avg_12_4x4_c:                                         52.4 ( 1.00x)
w_avg_12_4x4_avx2:                                      13.4 ( 3.91x)
w_avg_12_8x8_c:                                        109.2 ( 1.00x)
w_avg_12_8x8_avx2:                                      20.3 ( 5.39x)
w_avg_12_16x16_c:                                      396.3 ( 1.00x)
w_avg_12_16x16_avx2:                                    41.7 ( 9.51x)
w_avg_12_32x32_c:                                     1532.6 ( 1.00x)
w_avg_12_32x32_avx2:                                   138.6 (11.06x)
w_avg_12_64x64_c:                                     5996.7 ( 1.00x)
w_avg_12_64x64_avx2:                                   549.6 (10.91x)
w_avg_12_128x128_c:                                  23738.0 ( 1.00x)
w_avg_12_128x128_avx2:                                2177.2 (10.90x)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 01:01:27 +01:00
Andreas Rheinhardt
ea78402e9c avcodec/x86/vvc/mc,dsp_init: Avoid pointless wrappers for avg 
Up until now, there were two averaging assembly functions,
one for eight bit content and one for <=16 bit content;
there are also three C-wrappers around these functions,
for 8, 10 and 12 bpp. These wrappers simply forward the
maximum permissible value (i.e. (1<<bpp)-1) and promote
some integer values to ptrdiff_t.

Yet these wrappers are absolutely useless: The assembly functions
rederive the bpp from the maximum and only the integer part
of the promoted ptrdiff_t values is ever used. Of course,
these wrappers also entail an additional call (not a tail call,
because the additional maximum parameter is passed on the stack).

Remove the wrappers and add per-bpp assembly functions instead.
Given that the only difference between 10 and 12 bits are some
constants in registers, the main part of these functions can be
shared (given that this code uses a jumptable, it can even
be done without adding any additional jump).

Old benchmarks:
avg_8_2x2_c:                                            11.4 ( 1.00x)
avg_8_2x2_avx2:                                          7.9 ( 1.44x)
avg_8_4x4_c:                                            30.7 ( 1.00x)
avg_8_4x4_avx2:                                         10.4 ( 2.95x)
avg_8_8x8_c:                                           134.5 ( 1.00x)
avg_8_8x8_avx2:                                         16.6 ( 8.12x)
avg_8_16x16_c:                                         255.6 ( 1.00x)
avg_8_16x16_avx2:                                       28.2 ( 9.07x)
avg_8_32x32_c:                                         897.7 ( 1.00x)
avg_8_32x32_avx2:                                       83.9 (10.70x)
avg_8_64x64_c:                                        3320.0 ( 1.00x)
avg_8_64x64_avx2:                                      321.1 (10.34x)
avg_8_128x128_c:                                     12981.8 ( 1.00x)
avg_8_128x128_avx2:                                   1480.1 ( 8.77x)
avg_10_2x2_c:                                           12.0 ( 1.00x)
avg_10_2x2_avx2:                                         8.4 ( 1.43x)
avg_10_4x4_c:                                           34.9 ( 1.00x)
avg_10_4x4_avx2:                                         9.8 ( 3.56x)
avg_10_8x8_c:                                           76.8 ( 1.00x)
avg_10_8x8_avx2:                                        15.1 ( 5.08x)
avg_10_16x16_c:                                        256.6 ( 1.00x)
avg_10_16x16_avx2:                                      25.1 (10.20x)
avg_10_32x32_c:                                        932.9 ( 1.00x)
avg_10_32x32_avx2:                                      73.4 (12.72x)
avg_10_64x64_c:                                       3517.9 ( 1.00x)
avg_10_64x64_avx2:                                     414.8 ( 8.48x)
avg_10_128x128_c:                                    13695.3 ( 1.00x)
avg_10_128x128_avx2:                                  1648.1 ( 8.31x)
avg_12_2x2_c:                                           13.1 ( 1.00x)
avg_12_2x2_avx2:                                         8.6 ( 1.53x)
avg_12_4x4_c:                                           35.4 ( 1.00x)
avg_12_4x4_avx2:                                        10.1 ( 3.49x)
avg_12_8x8_c:                                           76.6 ( 1.00x)
avg_12_8x8_avx2:                                        16.7 ( 4.60x)
avg_12_16x16_c:                                        256.6 ( 1.00x)
avg_12_16x16_avx2:                                      25.5 (10.07x)
avg_12_32x32_c:                                        933.2 ( 1.00x)
avg_12_32x32_avx2:                                      75.7 (12.34x)
avg_12_64x64_c:                                       3519.1 ( 1.00x)
avg_12_64x64_avx2:                                     416.8 ( 8.44x)
avg_12_128x128_c:                                    13695.1 ( 1.00x)
avg_12_128x128_avx2:                                  1651.6 ( 8.29x)

New benchmarks:
avg_8_2x2_c:                                            11.5 ( 1.00x)
avg_8_2x2_avx2:                                          6.0 ( 1.91x)
avg_8_4x4_c:                                            29.7 ( 1.00x)
avg_8_4x4_avx2:                                          8.0 ( 3.72x)
avg_8_8x8_c:                                           131.4 ( 1.00x)
avg_8_8x8_avx2:                                         12.2 (10.74x)
avg_8_16x16_c:                                         254.3 ( 1.00x)
avg_8_16x16_avx2:                                       24.8 (10.25x)
avg_8_32x32_c:                                         897.7 ( 1.00x)
avg_8_32x32_avx2:                                       77.8 (11.54x)
avg_8_64x64_c:                                        3321.3 ( 1.00x)
avg_8_64x64_avx2:                                      318.7 (10.42x)
avg_8_128x128_c:                                     12988.4 ( 1.00x)
avg_8_128x128_avx2:                                   1430.1 ( 9.08x)
avg_10_2x2_c:                                           12.1 ( 1.00x)
avg_10_2x2_avx2:                                         5.7 ( 2.13x)
avg_10_4x4_c:                                           35.0 ( 1.00x)
avg_10_4x4_avx2:                                         9.0 ( 3.88x)
avg_10_8x8_c:                                           77.2 ( 1.00x)
avg_10_8x8_avx2:                                        12.4 ( 6.24x)
avg_10_16x16_c:                                        256.2 ( 1.00x)
avg_10_16x16_avx2:                                      24.3 (10.56x)
avg_10_32x32_c:                                        932.9 ( 1.00x)
avg_10_32x32_avx2:                                      71.9 (12.97x)
avg_10_64x64_c:                                       3516.8 ( 1.00x)
avg_10_64x64_avx2:                                     414.7 ( 8.48x)
avg_10_128x128_c:                                    13693.7 ( 1.00x)
avg_10_128x128_avx2:                                  1609.3 ( 8.51x)
avg_12_2x2_c:                                           14.1 ( 1.00x)
avg_12_2x2_avx2:                                         5.7 ( 2.48x)
avg_12_4x4_c:                                           35.8 ( 1.00x)
avg_12_4x4_avx2:                                         9.0 ( 3.96x)
avg_12_8x8_c:                                           76.9 ( 1.00x)
avg_12_8x8_avx2:                                        12.4 ( 6.22x)
avg_12_16x16_c:                                        256.5 ( 1.00x)
avg_12_16x16_avx2:                                      24.4 (10.50x)
avg_12_32x32_c:                                        934.1 ( 1.00x)
avg_12_32x32_avx2:                                      72.0 (12.97x)
avg_12_64x64_c:                                       3518.2 ( 1.00x)
avg_12_64x64_avx2:                                     414.8 ( 8.48x)
avg_12_128x128_c:                                    13689.5 ( 1.00x)
avg_12_128x128_avx2:                                  1611.1 ( 8.50x)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:58:33 +01:00
Andreas Rheinhardt
5a60b3f1a6 avcodec/x86/vvc/mc: Remove always-false branches 
The C versions of the average and weighted average functions
contains "FFMAX(3, 15 - BIT_DEPTH)" and the code here followed
this; yet it is only instantiated for bit depths 8, 10 and 12,
for which the above is just 15-BIT_DEPTH. So the comparisons
are unnecessary.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Andreas Rheinhardt
59f8ff4c18 avcodec/x86/vvc/mc: Remove unused constants 
Also avoid overaligning .rodata.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Andreas Rheinhardt
eabf52e787 avcodec/x86/vvc/mc: Avoid unused work 
The high quadword of these registers is zero for width 2.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Andreas Rheinhardt
9317fb2b2e avcodec/x86/vvc/mc: Avoid ymm registers where possible 
Widths 2 and 4 fit into xmm registers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Andreas Rheinhardt
caa0ae0cfb avcodec/x86/vvc/mc: Avoid pextr[dq], v{insert,extract}i128 
Use mov[dq], movdqu instead if the least significant parts
are set (i.e. if the immediate value is 0x0).

Old benchmarks:
avg_8_2x2_c:                                            11.3 ( 1.00x)
avg_8_2x2_avx2:                                          7.5 ( 1.50x)
avg_8_4x4_c:                                            31.2 ( 1.00x)
avg_8_4x4_avx2:                                         10.7 ( 2.91x)
avg_8_8x8_c:                                           133.5 ( 1.00x)
avg_8_8x8_avx2:                                         21.2 ( 6.30x)
avg_8_16x16_c:                                         254.7 ( 1.00x)
avg_8_16x16_avx2:                                       30.1 ( 8.46x)
avg_8_32x32_c:                                         896.9 ( 1.00x)
avg_8_32x32_avx2:                                      103.9 ( 8.63x)
avg_8_64x64_c:                                        3320.7 ( 1.00x)
avg_8_64x64_avx2:                                      539.4 ( 6.16x)
avg_8_128x128_c:                                     12991.5 ( 1.00x)
avg_8_128x128_avx2:                                   1661.3 ( 7.82x)
avg_10_2x2_c:                                           21.3 ( 1.00x)
avg_10_2x2_avx2:                                         8.3 ( 2.55x)
avg_10_4x4_c:                                           34.9 ( 1.00x)
avg_10_4x4_avx2:                                        10.6 ( 3.28x)
avg_10_8x8_c:                                           76.3 ( 1.00x)
avg_10_8x8_avx2:                                        20.2 ( 3.77x)
avg_10_16x16_c:                                        255.9 ( 1.00x)
avg_10_16x16_avx2:                                      24.1 (10.60x)
avg_10_32x32_c:                                        932.4 ( 1.00x)
avg_10_32x32_avx2:                                      73.3 (12.72x)
avg_10_64x64_c:                                       3516.4 ( 1.00x)
avg_10_64x64_avx2:                                     601.7 ( 5.84x)
avg_10_128x128_c:                                    13690.6 ( 1.00x)
avg_10_128x128_avx2:                                  1613.2 ( 8.49x)
avg_12_2x2_c:                                           14.0 ( 1.00x)
avg_12_2x2_avx2:                                         8.3 ( 1.67x)
avg_12_4x4_c:                                           35.3 ( 1.00x)
avg_12_4x4_avx2:                                        10.9 ( 3.26x)
avg_12_8x8_c:                                           76.5 ( 1.00x)
avg_12_8x8_avx2:                                        20.3 ( 3.77x)
avg_12_16x16_c:                                        256.7 ( 1.00x)
avg_12_16x16_avx2:                                      24.1 (10.63x)
avg_12_32x32_c:                                        932.5 ( 1.00x)
avg_12_32x32_avx2:                                      73.3 (12.72x)
avg_12_64x64_c:                                       3520.5 ( 1.00x)
avg_12_64x64_avx2:                                     602.6 ( 5.84x)
avg_12_128x128_c:                                    13689.6 ( 1.00x)
avg_12_128x128_avx2:                                  1613.1 ( 8.49x)
w_avg_8_2x2_c:                                          16.7 ( 1.00x)
w_avg_8_2x2_avx2:                                       13.4 ( 1.25x)
w_avg_8_4x4_c:                                          44.5 ( 1.00x)
w_avg_8_4x4_avx2:                                       15.9 ( 2.81x)
w_avg_8_8x8_c:                                         166.1 ( 1.00x)
w_avg_8_8x8_avx2:                                       45.7 ( 3.63x)
w_avg_8_16x16_c:                                       392.9 ( 1.00x)
w_avg_8_16x16_avx2:                                     57.8 ( 6.80x)
w_avg_8_32x32_c:                                      1455.5 ( 1.00x)
w_avg_8_32x32_avx2:                                    215.0 ( 6.77x)
w_avg_8_64x64_c:                                      5621.8 ( 1.00x)
w_avg_8_64x64_avx2:                                    875.2 ( 6.42x)
w_avg_8_128x128_c:                                   22131.3 ( 1.00x)
w_avg_8_128x128_avx2:                                 3390.1 ( 6.53x)
w_avg_10_2x2_c:                                         18.0 ( 1.00x)
w_avg_10_2x2_avx2:                                      14.0 ( 1.28x)
w_avg_10_4x4_c:                                         53.9 ( 1.00x)
w_avg_10_4x4_avx2:                                      15.9 ( 3.40x)
w_avg_10_8x8_c:                                        109.5 ( 1.00x)
w_avg_10_8x8_avx2:                                      40.4 ( 2.71x)
w_avg_10_16x16_c:                                      395.7 ( 1.00x)
w_avg_10_16x16_avx2:                                    44.7 ( 8.86x)
w_avg_10_32x32_c:                                     1532.7 ( 1.00x)
w_avg_10_32x32_avx2:                                   142.4 (10.77x)
w_avg_10_64x64_c:                                     6007.7 ( 1.00x)
w_avg_10_64x64_avx2:                                   745.5 ( 8.06x)
w_avg_10_128x128_c:                                  23719.7 ( 1.00x)
w_avg_10_128x128_avx2:                                2217.7 (10.70x)
w_avg_12_2x2_c:                                         18.9 ( 1.00x)
w_avg_12_2x2_avx2:                                      13.6 ( 1.38x)
w_avg_12_4x4_c:                                         47.5 ( 1.00x)
w_avg_12_4x4_avx2:                                      15.9 ( 2.99x)
w_avg_12_8x8_c:                                        109.3 ( 1.00x)
w_avg_12_8x8_avx2:                                      40.9 ( 2.67x)
w_avg_12_16x16_c:                                      395.6 ( 1.00x)
w_avg_12_16x16_avx2:                                    44.8 ( 8.84x)
w_avg_12_32x32_c:                                     1531.0 ( 1.00x)
w_avg_12_32x32_avx2:                                   141.8 (10.80x)
w_avg_12_64x64_c:                                     6016.7 ( 1.00x)
w_avg_12_64x64_avx2:                                   732.8 ( 8.21x)
w_avg_12_128x128_c:                                  23762.2 ( 1.00x)
w_avg_12_128x128_avx2:                                2223.4 (10.69x)

New benchmarks:
avg_8_2x2_c:                                            11.3 ( 1.00x)
avg_8_2x2_avx2:                                          7.6 ( 1.49x)
avg_8_4x4_c:                                            31.2 ( 1.00x)
avg_8_4x4_avx2:                                         10.8 ( 2.89x)
avg_8_8x8_c:                                           131.6 ( 1.00x)
avg_8_8x8_avx2:                                         15.6 ( 8.42x)
avg_8_16x16_c:                                         255.3 ( 1.00x)
avg_8_16x16_avx2:                                       27.9 ( 9.16x)
avg_8_32x32_c:                                         897.9 ( 1.00x)
avg_8_32x32_avx2:                                       81.2 (11.06x)
avg_8_64x64_c:                                        3320.0 ( 1.00x)
avg_8_64x64_avx2:                                      335.1 ( 9.91x)
avg_8_128x128_c:                                     12999.1 ( 1.00x)
avg_8_128x128_avx2:                                   1456.3 ( 8.93x)
avg_10_2x2_c:                                           12.0 ( 1.00x)
avg_10_2x2_avx2:                                         8.6 ( 1.40x)
avg_10_4x4_c:                                           34.9 ( 1.00x)
avg_10_4x4_avx2:                                         9.7 ( 3.61x)
avg_10_8x8_c:                                           76.7 ( 1.00x)
avg_10_8x8_avx2:                                        16.3 ( 4.69x)
avg_10_16x16_c:                                        256.3 ( 1.00x)
avg_10_16x16_avx2:                                      25.2 (10.18x)
avg_10_32x32_c:                                        932.8 ( 1.00x)
avg_10_32x32_avx2:                                      73.3 (12.72x)
avg_10_64x64_c:                                       3518.8 ( 1.00x)
avg_10_64x64_avx2:                                     416.8 ( 8.44x)
avg_10_128x128_c:                                    13691.6 ( 1.00x)
avg_10_128x128_avx2:                                  1612.9 ( 8.49x)
avg_12_2x2_c:                                           14.1 ( 1.00x)
avg_12_2x2_avx2:                                         8.7 ( 1.62x)
avg_12_4x4_c:                                           35.7 ( 1.00x)
avg_12_4x4_avx2:                                         9.7 ( 3.68x)
avg_12_8x8_c:                                           77.0 ( 1.00x)
avg_12_8x8_avx2:                                        16.9 ( 4.57x)
avg_12_16x16_c:                                        256.2 ( 1.00x)
avg_12_16x16_avx2:                                      25.7 ( 9.96x)
avg_12_32x32_c:                                        933.5 ( 1.00x)
avg_12_32x32_avx2:                                      74.0 (12.62x)
avg_12_64x64_c:                                       3516.4 ( 1.00x)
avg_12_64x64_avx2:                                     408.7 ( 8.60x)
avg_12_128x128_c:                                    13691.6 ( 1.00x)
avg_12_128x128_avx2:                                  1613.8 ( 8.48x)
w_avg_8_2x2_c:                                          16.7 ( 1.00x)
w_avg_8_2x2_avx2:                                       14.0 ( 1.19x)
w_avg_8_4x4_c:                                          48.2 ( 1.00x)
w_avg_8_4x4_avx2:                                       16.1 ( 3.00x)
w_avg_8_8x8_c:                                         168.0 ( 1.00x)
w_avg_8_8x8_avx2:                                       22.5 ( 7.47x)
w_avg_8_16x16_c:                                       392.5 ( 1.00x)
w_avg_8_16x16_avx2:                                     47.9 ( 8.19x)
w_avg_8_32x32_c:                                      1453.7 ( 1.00x)
w_avg_8_32x32_avx2:                                    176.1 ( 8.26x)
w_avg_8_64x64_c:                                      5631.4 ( 1.00x)
w_avg_8_64x64_avx2:                                    690.8 ( 8.15x)
w_avg_8_128x128_c:                                   22139.5 ( 1.00x)
w_avg_8_128x128_avx2:                                 2742.4 ( 8.07x)
w_avg_10_2x2_c:                                         18.1 ( 1.00x)
w_avg_10_2x2_avx2:                                      13.8 ( 1.31x)
w_avg_10_4x4_c:                                         47.0 ( 1.00x)
w_avg_10_4x4_avx2:                                      16.4 ( 2.87x)
w_avg_10_8x8_c:                                        110.0 ( 1.00x)
w_avg_10_8x8_avx2:                                      21.6 ( 5.09x)
w_avg_10_16x16_c:                                      395.2 ( 1.00x)
w_avg_10_16x16_avx2:                                    45.4 ( 8.71x)
w_avg_10_32x32_c:                                     1533.8 ( 1.00x)
w_avg_10_32x32_avx2:                                   142.6 (10.76x)
w_avg_10_64x64_c:                                     6004.4 ( 1.00x)
w_avg_10_64x64_avx2:                                   672.8 ( 8.92x)
w_avg_10_128x128_c:                                  23748.5 ( 1.00x)
w_avg_10_128x128_avx2:                                2198.0 (10.80x)
w_avg_12_2x2_c:                                         17.2 ( 1.00x)
w_avg_12_2x2_avx2:                                      13.9 ( 1.24x)
w_avg_12_4x4_c:                                         51.4 ( 1.00x)
w_avg_12_4x4_avx2:                                      16.5 ( 3.11x)
w_avg_12_8x8_c:                                        109.1 ( 1.00x)
w_avg_12_8x8_avx2:                                      22.0 ( 4.96x)
w_avg_12_16x16_c:                                      395.9 ( 1.00x)
w_avg_12_16x16_avx2:                                    44.9 ( 8.81x)
w_avg_12_32x32_c:                                     1533.5 ( 1.00x)
w_avg_12_32x32_avx2:                                   142.3 (10.78x)
w_avg_12_64x64_c:                                     6002.0 ( 1.00x)
w_avg_12_64x64_avx2:                                   557.5 (10.77x)
w_avg_12_128x128_c:                                  23749.5 ( 1.00x)
w_avg_12_128x128_avx2:                                2202.0 (10.79x)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Andreas Rheinhardt
7bf9c1e3f6 avcodec/x86/vvc/mc: Avoid redundant clipping for 8bit 
It is already done by packuswb.

Old benchmarks:
avg_8_2x2_c:                                            11.1 ( 1.00x)
avg_8_2x2_avx2:                                          8.6 ( 1.28x)
avg_8_4x4_c:                                            30.0 ( 1.00x)
avg_8_4x4_avx2:                                         10.8 ( 2.78x)
avg_8_8x8_c:                                           132.0 ( 1.00x)
avg_8_8x8_avx2:                                         25.7 ( 5.14x)
avg_8_16x16_c:                                         254.6 ( 1.00x)
avg_8_16x16_avx2:                                       33.2 ( 7.67x)
avg_8_32x32_c:                                         897.5 ( 1.00x)
avg_8_32x32_avx2:                                      115.6 ( 7.76x)
avg_8_64x64_c:                                        3316.9 ( 1.00x)
avg_8_64x64_avx2:                                      626.5 ( 5.29x)
avg_8_128x128_c:                                     12973.6 ( 1.00x)
avg_8_128x128_avx2:                                   1914.0 ( 6.78x)
w_avg_8_2x2_c:                                          16.7 ( 1.00x)
w_avg_8_2x2_avx2:                                       14.4 ( 1.16x)
w_avg_8_4x4_c:                                          48.2 ( 1.00x)
w_avg_8_4x4_avx2:                                       16.5 ( 2.92x)
w_avg_8_8x8_c:                                         168.1 ( 1.00x)
w_avg_8_8x8_avx2:                                       49.7 ( 3.38x)
w_avg_8_16x16_c:                                       392.4 ( 1.00x)
w_avg_8_16x16_avx2:                                     61.1 ( 6.43x)
w_avg_8_32x32_c:                                      1455.3 ( 1.00x)
w_avg_8_32x32_avx2:                                    224.6 ( 6.48x)
w_avg_8_64x64_c:                                      5632.1 ( 1.00x)
w_avg_8_64x64_avx2:                                    896.9 ( 6.28x)
w_avg_8_128x128_c:                                   22136.3 ( 1.00x)
w_avg_8_128x128_avx2:                                 3626.7 ( 6.10x)

New benchmarks:
avg_8_2x2_c:                                            12.3 ( 1.00x)
avg_8_2x2_avx2:                                          8.1 ( 1.52x)
avg_8_4x4_c:                                            30.3 ( 1.00x)
avg_8_4x4_avx2:                                         11.3 ( 2.67x)
avg_8_8x8_c:                                           131.8 ( 1.00x)
avg_8_8x8_avx2:                                         21.3 ( 6.20x)
avg_8_16x16_c:                                         255.0 ( 1.00x)
avg_8_16x16_avx2:                                       30.6 ( 8.33x)
avg_8_32x32_c:                                         898.5 ( 1.00x)
avg_8_32x32_avx2:                                      104.9 ( 8.57x)
avg_8_64x64_c:                                        3317.7 ( 1.00x)
avg_8_64x64_avx2:                                      540.9 ( 6.13x)
avg_8_128x128_c:                                     12986.5 ( 1.00x)
avg_8_128x128_avx2:                                   1663.4 ( 7.81x)
w_avg_8_2x2_c:                                          16.8 ( 1.00x)
w_avg_8_2x2_avx2:                                       13.9 ( 1.21x)
w_avg_8_4x4_c:                                          48.2 ( 1.00x)
w_avg_8_4x4_avx2:                                       16.2 ( 2.98x)
w_avg_8_8x8_c:                                         168.6 ( 1.00x)
w_avg_8_8x8_avx2:                                       46.3 ( 3.64x)
w_avg_8_16x16_c:                                       392.4 ( 1.00x)
w_avg_8_16x16_avx2:                                     57.7 ( 6.80x)
w_avg_8_32x32_c:                                      1454.6 ( 1.00x)
w_avg_8_32x32_avx2:                                    214.6 ( 6.78x)
w_avg_8_64x64_c:                                      5638.4 ( 1.00x)
w_avg_8_64x64_avx2:                                    875.6 ( 6.44x)
w_avg_8_128x128_c:                                   22133.5 ( 1.00x)
w_avg_8_128x128_avx2:                                 3334.3 ( 6.64x)

Also saves 550B of .text here. The improvements will likely
be even better on Win64, because it avoids using two nonvolatile
registers in the weighted average case.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-22 00:57:56 +01:00
Michael Niedermayer
c98346ffaa avcodec/libtheoraenc: make keyframe mask unsigned and handle its larger range 
Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 473579864/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LIBTHEORA_fuzzer-5835688160591872

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2026-02-21 22:43:41 +00:00
Andreas Rheinhardt
3be4545b67 avcodec/vvc/inter: Deduplicate applying averaging 
Reviewed-by: Frank Plowman <post@frankplowman.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-21 12:48:50 +01:00
Andreas Rheinhardt
324fd0bc46 avcodec/vvc/inter: Remove redundant variable, fix shadowing 
Reviewed-by: Frank Plowman <post@frankplowman.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-21 12:48:50 +01:00
Andreas Rheinhardt
6777d5cd48 avcodec/vvc/inter: Remove always-false/true checks 
derive_weight() is only called when pred_flag is PF_BI,
which only happens in B slices.

Reviewed-by: Frank Plowman <post@frankplowman.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2026-02-21 12:48:50 +01:00
Ramiro Polla
a0b55a0491 avcodec/mjpegdec: fix indentation and some white spaces 2026-02-20 16:32:10 +01:00
Ramiro Polla
0accfde281 avcodec/jpeglsdec: fix decoding of jpegls files with restart markers 2026-02-20 16:32:10 +01:00
Ramiro Polla
5672c410a6 avcodec/mjpegdec: unescape data for each restart marker individually 
Instead of unescaping the entire image data buffer in advance, and then
having to perform heuristics to skip over where the restart markers
would have been, unescape the image data for each restart marker
individually.
 2026-02-20 16:32:10 +01:00
Ramiro Polla
22771117a0 avcodec/mjpegdec: move get_bits_left() checks after handling of restart count 
This commit doesn't really change much on its own, but it's helpful in
preparation for the following commit.
 2026-02-20 16:32:10 +01:00
Ramiro Polla
3783b8f5e1 avcodec/mjpegdec: move vpred initialization out of loop in ljpeg_decode_rgb_scan() 
The initialization code was only being run when mb_y was 0, so it could
just as well be moved out of the loop.

I haven't been able to find a bayer sample that has restart markers to
check whether vpred should be reinitialized at every restart. It would
seem logical that it should, but I have left this out until we find a
sample that does have restart markers.
 2026-02-20 16:32:10 +01:00
Ramiro Polla
851cb118da avcodec/jpegls: clear more JLSState fields inside ff_jpegls_init_state() 2026-02-20 16:32:10 +01:00
Ramiro Polla
3f2d4b49e6 avcodec/mjpegdec: split mjpeg_find_raw_scan_data() out of mjpeg_unescape_sos() 2026-02-20 16:32:10 +01:00