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avcodec/mpegvideo: Try to perform check for MPEG-1/2 at compile-time 

This is possible if CONFIG_SMALL is not true.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-12-23 06:34:24 +01:00
parent 7c0c73bca0
commit bf70c34b11
1 changed files with 3 additions and 2 deletions
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5
libavcodec/mpegvideo.c
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@ -1962,6 +1962,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
int lowres_flag, int is_mpeg12)
{
#define IS_ENCODER(s) (CONFIG_MPEGVIDEOENC && !lowres_flag && (s)->encoding)
#define IS_MPEG12(s) (CONFIG_SMALL ? ((s)->out_format == FMT_MPEG1) : is_mpeg12)
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
s->current_picture.qscale_table[mb_xy] = s->qscale;
@ -2076,7 +2077,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
}
/* add dct residue */
if (IS_ENCODER(s) || !(s->msmpeg4_version || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO
if (IS_ENCODER(s) || !(IS_MPEG12(s) || s->msmpeg4_version
|| (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){
add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
@ -2183,7 +2184,7 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
}
}
/* dct only in intra block */
else if (IS_ENCODER(s) || !(s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO)) {
else if (IS_ENCODER(s) || !IS_MPEG12(s)) {
put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale);
put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale);
put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale);