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6 Commits

Author SHA1 Message Date
Andreas Rheinhardt 594723ec38 avcodec/mpegvideo: Move quant_precision to Mpeg4DecContext 
It is an MPEG-4-only value; it is always five for the MPEG-4
encoder, so just hardcode this value and move the MpegEncContext
field to Mpeg4DecContext.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2024-06-20 18:58:39 +02:00
Andreas Rheinhardt 8e207bf463 avcodec/mpeg4videodec: Align idct-block appropriately 
It is accessed via AV_RN64A in ff_simple_idct_put_int32_10bit().
Should fix the UBSan failures in the mpeg4-simple-studio-profile
test here:
https://fate.ffmpeg.org/report.cgi?time=20240312011016&slot=ppc-linux-gcc-13.2-ubsan-altivec-qemu

Reviewed-by: Kieran Kunhya <kierank@obe.tv>
Tested-by: Sean McGovern <gseanmcg@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2024-03-14 21:52:16 +01:00
Andreas Rheinhardt 5d93c330f7 avcodec/mpegvideo: Move sprite-related fields to Mpeg4DecContext 
Only used there.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-10-20 07:56:17 +02:00
Andreas Rheinhardt 4209216ee8 avcodec/mpegvideodsp: Make MpegVideoDSP MPEG-4 only 
It is only used by gmc/gmc1 which is only used by the MPEG-4
decoder, so move it to Mpeg4DecContext and rename it
to Mpeg4VideoDSP. Also compile it iff the MPEG-4 decoder is compiled.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-10-20 07:56:17 +02:00
Andreas Rheinhardt ac8afdb9b5 avcodec/mpegvideo_motion: Move mspel/gmc motion to mpeg4videodec.c 
It is the only codec for which mcsel is ever set.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-10-20 07:56:17 +02:00
Andreas Rheinhardt 1187765f3b avcodec/mpeg4video.h: Move decoder-only parts to a new header 
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
 2022-02-13 19:41:57 +01:00