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ffmpeg/libavcodec/x86
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Andreas Rheinhardt 3144652588 avcodec/x86/lossless_videoencdsp_init: Don't read too often 
sub_median_pred_mmxext() calculates a predictor from the left, top
and topleft pixel values. The topleft values need to be initialized
differently for the first loop initialization than for the others
in order to avoid reading ptr[-1]. So it has been initialized before
the loop and then read again at the end of the loop, so that the last
value read was never used. Yet this can lead to reads beyond the end
of the buffer, e.g. with
ffmpeg -cpuflags mmx+mmxext -f lavfi -i "color=size=64x4,format=yuv420p" \
-vf vflip -c:v ffvhuff -pred median -frames 1 -f null -

Fix this by not reading the value at the end of the loop.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-12-14 10:16:29 +01:00
..
h26x x86/vvcdec: sao, add avx2 support 2025-05-14 20:55:39 +08:00
hevc avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
vvc avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
aacencdsp.asm x86: aacencdsp: Fix negating signed values in aac_quantize_bands 2025-02-10 14:03:24 +02:00
aacencdsp_init.c x86/aacencdsp: add AVX version of quantize_bands 2024-06-09 12:29:49 -03:00
aacpsdsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
aacpsdsp_init.c avcodec/aacpsdsp: add restrict to function pointers to match declarations 2025-10-25 01:01:14 +02:00
ac3dsp.asm x86/ac3dsp: clear the upper 32 bits for input arguments where needed 2024-04-08 13:45:58 -03:00
ac3dsp_downmix.asm
ac3dsp_init.c x86/ac3dsp: add ff_float_to_fixed24_avx() 2023-11-25 21:50:56 -03:00
alacdsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
alacdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
apv_dsp.asm avcodec/x86/apv_dsp: Don't export arrays unnecessarily 2025-09-24 01:21:32 +00:00
apv_dsp_init.c lavc/apv: AVX2 transquant for x86-64 2025-04-27 15:52:30 +01:00
audiodsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
audiodsp_init.c
blockdsp.asm x86/blockdsp: add sse2 and avx2 versions of fill_block_tab 2024-05-08 21:13:23 -03:00
blockdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
bswapdsp.asm
bswapdsp_init.c
cabac.h get_cabac_inline_x86: Don't inline the assembly function on 32 bit 2023-04-02 00:34:10 +03:00
cavs_qpel.asm avcodec/x86/cavs_qpel: Add SSE2 vertical motion compensation 2025-10-08 20:40:08 +02:00
cavsdsp.c avcodec/x86/fpel: Port ff_put_pixels8_mmx() to SSE2 2025-10-17 13:27:56 +02:00
cavsidct.asm
celt_pvq_init.c lavc/opus*: move to opus/ subdir 2024-09-02 11:56:53 +02:00
celt_pvq_search.asm all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
cfhddsp.asm
cfhddsp_init.c
cfhdencdsp.asm
cfhdencdsp_init.c
constants.c avcodec/x86/cavs_qpel: Add SSE2 vertical motion compensation 2025-10-08 20:40:08 +02:00
constants.h avcodec/x86/cavs_qpel: Add SSE2 vertical motion compensation 2025-10-08 20:40:08 +02:00
dcadsp.asm
dcadsp_init.c avcodec/dcadsp: constify lfe_samples parameter 2025-10-04 14:18:30 -03:00
dct32.asm
dirac_dwt.asm all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
dirac_dwt_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
diracdsp.asm avcodec/x86/cavs_qpel: Add SSE2 vertical motion compensation 2025-10-08 20:40:08 +02:00
diracdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
dnxhdenc.asm
dnxhdenc_init.c avcodec/pixblockdsp: be consistent about restrict use in ff_{get,diff}_pixels 2025-10-25 01:01:15 +02:00
exrdsp.asm
exrdsp_init.c
fdct.c avcodec/x86/fdct: Remove obsolete comment 2025-11-04 11:41:32 +01:00
fdct.h
fdctdsp_init.c avcodec/x86/fdct: guard usage of undefined functions with preprocessor 2025-07-25 21:10:16 +02:00
flac_dsp_gpl.asm
flacdsp.asm x86/flacdsp: remove unused parameters to pmacsdql macro 2024-05-13 12:18:38 -03:00
flacdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
flacencdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
fmtconvert.asm all: fix whitespace/new-line issues 2025-08-03 13:48:47 +02:00
fmtconvert_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
fpel.asm avcodec/x86/fpel: Port ff_put_pixels8_mmx() to SSE2 2025-10-17 13:27:56 +02:00
fpel.h avcodec/x86/fpel: Port ff_put_pixels8_mmx() to SSE2 2025-10-17 13:27:56 +02:00
g722dsp.asm
g722dsp_init.c
h263_loopfilter.asm avcodec/x86/h263_loopfilter: Port loop filter to SSE2 2025-10-03 17:05:46 +00:00
h263dsp_init.c avcodec/x86/h263_loopfilter: Port loop filter to SSE2 2025-10-03 17:05:46 +00:00
h264_cabac.c
h264_chromamc.asm avcodec/x86/h264_chromamc: Use xmm regs in chroma_mc4 SSSE3 functions 2025-11-06 02:16:28 +01:00
h264_chromamc_10bit.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
h264_deblock.asm
h264_deblock_10bit.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
h264_idct.asm avcodec/x86/h264_idct: fix version check for NASM 3 and newer 2025-12-08 17:43:29 +00:00
h264_idct_10bit.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
h264_intrapred.asm x86: Update x86inc.asm 2024-03-24 14:53:57 +01:00
h264_intrapred_10bit.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
h264_intrapred_init.c x86/h264_pred: Convert ff_pred8x8_vertical_8_mmx to ff_pred8x8_vertical_8_sse2 2024-02-13 21:17:06 +00:00
h264_qpel.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
h264_qpel_8bit.asm avcodec/x86/qpel: Add specializations for put_l2 functions 2025-11-01 15:17:05 +01:00
h264_qpel_10bit.asm avcodec/x86/h264_qpel_10bit: Remove SSE2 "cache64" duplicates 2025-10-04 07:06:33 +02:00
h264_weight.asm x86/h264_weight: don't do arithmetic right shift of a 32bit values in 64bit registers 2024-09-01 15:43:18 -03:00
h264_weight_10bit.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
h264chroma_init.c avcodec/x86/h264_chromamc: Remove MMX(EXT) funcs overridden by SSSE3 2025-11-01 13:34:23 +01:00
h264dsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
hpeldsp.asm avcodec/x86/hpeldsp: Don't use PAVGB macro 2025-11-02 12:05:52 +01:00
hpeldsp.h avcodec/x86/rv40dsp_init: Remove MMX(EXT) funcs overridden by SSSE3 2025-09-26 06:21:23 +02:00
hpeldsp_init.c avcodec/x86/fpel: Port ff_put_pixels8_mmx() to SSE2 2025-10-17 13:27:56 +02:00
huffyuvdsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
huffyuvdsp_init.c
huffyuvdsp_template.asm
huffyuvencdsp.asm
huffyuvencdsp_init.c
idctdsp.asm
idctdsp.h avcodec/x86/idctdsp: add restrict to match function pointer types 2025-10-25 01:01:15 +02:00
idctdsp_init.c All: Removed reliance on compiler performing dead code elimination, changed various macro constant checks from if() to #if 2025-11-28 19:52:51 +01:00
imdct36.asm
jpeg2000dsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
jpeg2000dsp_init.c
lossless_audiodsp.asm x86/: clear the high bits for order in scalarproduct_and_madd functions 2023-11-22 14:18:42 -03:00
lossless_audiodsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
lossless_videodsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
lossless_videodsp_init.c
lossless_videoencdsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
lossless_videoencdsp_init.c avcodec/x86/lossless_videoencdsp_init: Don't read too often 2025-12-14 10:16:29 +01:00
lpc.asm x86/lpc: remove HAVE_AVX2_EXTERNAL checks 2024-10-06 01:32:49 +02:00
lpc_init.c
Makefile {lib{avcodec,swscale}/x86/,}Makefile: Kill MMX-OBJS 2025-11-30 22:20:13 +01:00
mathops.h avcodec/x86/mathops: clip constants used with shift instructions within inline assembly 2023-07-20 16:51:53 -03:00
me_cmp.asm avcodec/x86/me_cmp: Avoid call on UNIX64 2025-11-26 00:01:09 +00:00
me_cmp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
mlpdsp.asm
mlpdsp_init.c All: Removed reliance on compiler performing dead code elimination, changed various macro constant checks from if() to #if 2025-11-28 19:52:51 +01:00
mpeg4videodsp.c
mpegaudiodsp.c avcodec/mpegaudiodsp: Init dct32 directly 2023-10-01 01:53:32 +02:00
mpegvideo.c avcodec/mpegvideo: Port dct_unquantize_mpeg2_intra_mmx to SSE2 2025-12-03 10:23:43 +01:00
mpegvideoenc.c avcodec/x86/mpegvideoenc_template: Reduce number of registers used 2025-11-18 20:41:13 +01:00
mpegvideoenc_template.c avcodec/x86/mpegvideoenc_template: Reduce number of registers used 2025-11-18 20:41:13 +01:00
mpegvideoencdsp.asm avcodec/x86/mpegvideoencdsp: Port add_8x8basis_ssse3() to ASM 2025-11-18 20:41:12 +01:00
mpegvideoencdsp_init.c avcodec/x86/mpegvideoencdsp: Port add_8x8basis_ssse3() to ASM 2025-11-18 20:41:12 +01:00
opusdsp.asm opusdsp: add ability to modify deemphasis constant 2024-04-27 11:12:07 +02:00
opusdsp_init.c lavc/opus*: move to opus/ subdir 2024-09-02 11:56:53 +02:00
pixblockdsp.asm
pixblockdsp_init.c avcodec/pixblockdsp: be consistent about restrict use in ff_{get,diff}_pixels 2025-10-25 01:01:15 +02:00
pngdsp.asm avcodec/x86/pngdsp: add missing emms at the end of add_png_paeth_prediction 2025-09-15 22:18:52 -03:00
pngdsp_init.c
proresdsp.asm
proresdsp_init.c avcodec/proresdsp: Pass necessary parameter directly 2023-09-11 00:26:34 +02:00
qpel.asm avcodec/x86/h264_qpel: Add and use ff_{avg,put}_pixels16x16_l2_sse2() 2025-11-01 15:17:05 +01:00
qpel.h avcodec/x86/h264_qpel: Add and use ff_{avg,put}_pixels16x16_l2_sse2() 2025-11-01 15:17:05 +01:00
qpeldsp.asm avcodec/x86/qpel: Add specializations for put_l2 functions 2025-11-01 15:17:05 +01:00
qpeldsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
rv34dsp.asm x86: Avoid using 'd' as an argument name 2024-03-24 14:53:57 +01:00
rv34dsp_init.c
rv40dsp.asm x86: Update x86inc.asm 2024-03-24 14:53:57 +01:00
rv40dsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
sbcdsp.asm
sbcdsp_init.c
sbrdsp.asm x86: Update x86inc.asm 2024-03-24 14:53:57 +01:00
sbrdsp_init.c
simple_idct.asm avcodec/x86/simple_idct: Port to SSE2 2025-11-08 18:48:54 +01:00
simple_idct.h avcodec/x86/simple_idct: Port to SSE2 2025-11-08 18:48:54 +01:00
simple_idct10.asm
simple_idct10_template.asm
snowdsp.c avcodec/snow: Move dsp helper functions to snow_dwt.h 2023-10-02 12:23:16 +02:00
svq1enc.asm
svq1enc_init.c
synth_filter.asm
synth_filter_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
takdsp.asm x86/takdsp: add missing wrappers to AVX2 functions 2023-12-25 22:31:15 -03:00
takdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
ttadsp.asm
ttadsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
ttaencdsp.asm
ttaencdsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
utvideodsp.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
utvideodsp_init.c
v210-init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
v210.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
v210enc.asm
v210enc_init.c All: Removed reliance on compiler performing dead code elimination, changed various macro constant checks from if() to #if 2025-11-28 19:52:51 +01:00
vc1dsp.h avcodec/x86/vc1dsp: add missing header for HAVE_6REGS 2025-08-14 00:08:10 +00:00
vc1dsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
vc1dsp_loopfilter.asm
vc1dsp_mc.asm x86: replace explicit REP_RETs with RETs 2023-02-01 04:23:55 +01:00
vc1dsp_mmx.c
videodsp.asm lavc/x86/videodsp: Drop MMX usage 2024-12-01 13:26:34 +08:00
videodsp_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
vorbisdsp.asm
vorbisdsp_init.c
vp3dsp.asm avcodec/x86/vp3dsp: Remove remnants of MMX 2025-11-02 12:01:52 +01:00
vp3dsp_init.c avcodec/vp3dsp: Remove unused flags parameter from ff_vp3dsp_init() 2025-10-13 18:59:24 +02:00
vp6dsp.asm avcodec/x86/vp6dsp: Avoid packing+unpacking 2025-11-27 12:10:49 +01:00
vp6dsp_init.c avcodec/vp6dsp: Constify source in vp6_filter_diag4 2025-11-27 12:10:32 +01:00
vp8dsp.asm avcodec/x86/vp8dsp: Don't use saturated addition when unnecessary 2025-12-04 15:17:37 +01:00
vp8dsp_init.c avcodec/x86/vp8dsp_init: Remove unused macro 2025-12-04 15:17:37 +01:00
vp8dsp_loopfilter.asm
vp9dsp_init.c avcodec/vp9itxfm{,_16bpp}: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:51 +01:00
vp9dsp_init.h avcodec/vp9mc: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:05 +01:00
vp9dsp_init_10bpp.c
vp9dsp_init_12bpp.c
vp9dsp_init_16bpp.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00
vp9dsp_init_16bpp_template.c avcodec/vp9itxfm{,_16bpp}: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:51 +01:00
vp9intrapred.asm avcodec/vp9intrapred: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:44 +01:00
vp9intrapred_16bpp.asm
vp9itxfm.asm avcodec/vp9itxfm{,_16bpp}: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:51 +01:00
vp9itxfm_16bpp.asm avcodec/vp9itxfm{,_16bpp}: Remove MMXEXT functions overridden by SSSE3 2025-12-08 19:27:51 +01:00
vp9itxfm_16bpp_avx512.asm all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
vp9itxfm_avx2.asm vp9: Add 8bpc AVX2 asm for inverse transforms 2025-09-19 23:12:59 +00:00
vp9itxfm_avx512.asm avcodec/x86/vp9: Add AVX-512ICL for 16x16 and 32x32 8bpc inverse transforms 2025-05-19 15:56:27 +02:00
vp9itxfm_template.asm
vp9lpf.asm
vp9lpf_16bpp.asm
vp9mc.asm avcodec/x86/vp9mc: Reindent after the previous commit 2025-12-08 19:35:07 +01:00
vp9mc_16bpp.asm avcodec/x86/constants: add pd_64 2025-04-25 23:20:58 -03:00
vpx_arith.h
w64xmmtest.c
xvididct.asm avcodec/x86/xvididct: Remove remnants of MMX 2025-11-08 18:48:54 +01:00
xvididct.h
xvididct_init.c avcodec/x86/Makefile: Only compile ASM init files when X86ASM is enabled 2025-11-30 22:20:13 +01:00