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Code Issues Releases Activity

avcodec/mpegvideo_enc: Move allocating remaining buffers to init_buffers

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Also allocate mb_type, mc_mb_var, mb_var and mb_mean jointly
while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-03-16 10:21:30 +01:00
parent a1f18b195e
commit f2ba0676b6
1 changed files with 19 additions and 19 deletions
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38
libavcodec/mpegvideo_enc.c
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@ -437,12 +437,14 @@ static av_cold int init_buffers(MPVMainEncContext *const m, AVCodecContext *avct
};
static_assert(FFMAX(ME_MAP_ALLOC_SIZE, DCT_ERROR_SIZE) * MAX_THREADS + ALIGN - 1 <= SIZE_MAX,
"Need checks for potential overflow.");
unsigned nb_slices = s->slice_context_count, mv_table_size;
unsigned nb_slices = s->slice_context_count, mv_table_size, mb_array_size;
char *dct_error = NULL, *me_map;
int has_b_frames = !!m->max_b_frames, nb_mv_tables = 1 + 5 * has_b_frames;
int16_t (*mv_table)[2];
if (s->noise_reduction) {
if (!FF_ALLOCZ_TYPED_ARRAY(s->dct_offset, 2))
return AVERROR(ENOMEM);
dct_error = av_mallocz(ALIGN - 1 + nb_slices * DCT_ERROR_SIZE);
if (!dct_error)
return AVERROR(ENOMEM);
@ -455,6 +457,14 @@ static av_cold int init_buffers(MPVMainEncContext *const m, AVCodecContext *avct
m->me_map_base = me_map;
me_map += FFALIGN((uintptr_t)me_map, ALIGN) - (uintptr_t)me_map;
/* Allocate MB type table */
mb_array_size = s->mb_stride * s->mb_height;
s->mb_type = av_calloc(mb_array_size, 3 * sizeof(*s->mb_type) + sizeof(*s->mb_mean));
if (!s->mb_type)
return AVERROR(ENOMEM);
if (!FF_ALLOCZ_TYPED_ARRAY(s->lambda_table, mb_array_size))
return AVERROR(ENOMEM);
mv_table_size = (s->mb_height + 2) * s->mb_stride + 1;
if (s->codec_id == AV_CODEC_ID_MPEG4 ||
(s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) {
@ -474,9 +484,17 @@ static av_cold int init_buffers(MPVMainEncContext *const m, AVCodecContext *avct
int16_t (*tmp_mv_table)[2] = mv_table;
if (dct_error) {
s2->dct_offset = s->dct_offset;
s2->dct_error_sum = (void*)dct_error;
dct_error += DCT_ERROR_SIZE;
}
s2->mb_type = s->mb_type;
s2->mc_mb_var = s2->mb_type + mb_array_size;
s2->mb_var = s2->mc_mb_var + mb_array_size;
s2->mb_mean = (uint8_t*)(s2->mb_var + mb_array_size);
s2->lambda_table = s->lambda_table;
s2->me.map = (uint32_t*)me_map;
s2->me.score_map = s2->me.map + ME_MAP_SIZE;
me_map += ME_MAP_ALLOC_SIZE;
@ -517,7 +535,6 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
MpegEncContext *const s = &m->s;
AVCPBProperties *cpb_props;
int i, ret;
int mb_array_size;
mpv_encode_defaults(m);
@ -1017,20 +1034,6 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
if (ret < 0)
return ret;
/* Allocate MB type table */
mb_array_size = s->mb_stride * s->mb_height;
if (!FF_ALLOCZ_TYPED_ARRAY(s->mb_type, mb_array_size) ||
!FF_ALLOCZ_TYPED_ARRAY(s->lambda_table, mb_array_size) ||
!FF_ALLOCZ_TYPED_ARRAY(s->mc_mb_var, mb_array_size) ||
!FF_ALLOCZ_TYPED_ARRAY(s->mb_var, mb_array_size) ||
!(s->mb_mean = av_mallocz(mb_array_size)))
return AVERROR(ENOMEM);
if (s->noise_reduction) {
if (!FF_ALLOCZ_TYPED_ARRAY(s->dct_offset, 2))
return AVERROR(ENOMEM);
}
ff_dct_encode_init(s);
if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
@ -1122,9 +1125,6 @@ av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
av_freep(&s->q_intra_matrix);
av_freep(&s->q_intra_matrix16);
av_freep(&s->dct_offset);
av_freep(&s->mb_var);
av_freep(&s->mc_mb_var);
av_freep(&s->mb_mean);
return 0;
}