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avcodec/mpegvideo_dec: Factor debugging dct coefficients out

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This allows to hint to the compiler that the branch is likely
not taken by marking the factored out function as av_cold.
It is also in preparation for further commits.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-06-15 22:19:15 +02:00
parent 0723fcce51
commit 261d8eb5dd
1 changed files with 15 additions and 11 deletions
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26
libavcodec/mpegvideo_dec.c
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@ -1064,6 +1064,19 @@ void mpv_reconstruct_mb_internal(MpegEncContext *s, int16_t block[12][64],
} }
} }
static av_cold void debug_dct_coeffs(MPVContext *s, const int16_t block[][64])
{
/* print DCT coefficients */
av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 64; j++) {
av_log(s->avctx, AV_LOG_DEBUG, "%5d",
block[i][s->idsp.idct_permutation[j]]);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64]) void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
{ {
const int mb_xy = s->mb_y * s->mb_stride + s->mb_x; const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
@ -1082,17 +1095,8 @@ void ff_mpv_reconstruct_mb(MpegEncContext *s, int16_t block[12][64])
*mbskip_ptr = 0; /* not skipped */ *mbskip_ptr = 0; /* not skipped */
} }
if (s->avctx->debug & FF_DEBUG_DCT_COEFF) { if (s->avctx->debug & FF_DEBUG_DCT_COEFF)
/* print DCT coefficients */ debug_dct_coeffs(s, block);
av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y);
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 64; j++) {
av_log(s->avctx, AV_LOG_DEBUG, "%5d",
block[i][s->idsp.idct_permutation[j]]);
}
av_log(s->avctx, AV_LOG_DEBUG, "\n");
}
}
av_assert2((s->out_format <= FMT_H261) == (s->out_format == FMT_H261 || s->out_format == FMT_MPEG1)); av_assert2((s->out_format <= FMT_H261) == (s->out_format == FMT_H261 || s->out_format == FMT_MPEG1));
if (!s->avctx->lowres) { if (!s->avctx->lowres) {