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Code Issues Releases Activity

mpegvideo: use av_buffer_replace() to simplify code

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This commit is contained in:
Anton Khirnov 2020-06-05 11:24:19 +02:00
parent eff289ce9f
commit 16f8b96dfa
1 changed files with 14 additions and 22 deletions
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36
libavcodec/mpegpicture.c
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@ -315,30 +315,22 @@ void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
int ff_update_picture_tables(Picture *dst, Picture *src)
{
int i;
int i, ret;
#define UPDATE_TABLE(table) \
do { \
if (src->table && \
(!dst->table || dst->table->buffer != src->table->buffer)) { \
av_buffer_unref(&dst->table); \
dst->table = av_buffer_ref(src->table); \
if (!dst->table) { \
ff_free_picture_tables(dst); \
return AVERROR(ENOMEM); \
} \
} \
} while (0)
UPDATE_TABLE(mb_var_buf);
UPDATE_TABLE(mc_mb_var_buf);
UPDATE_TABLE(mb_mean_buf);
UPDATE_TABLE(mbskip_table_buf);
UPDATE_TABLE(qscale_table_buf);
UPDATE_TABLE(mb_type_buf);
ret = av_buffer_replace(&dst->mb_var_buf, src->mb_var_buf);
ret |= av_buffer_replace(&dst->mc_mb_var_buf, src->mc_mb_var_buf);
ret |= av_buffer_replace(&dst->mb_mean_buf, src->mb_mean_buf);
ret |= av_buffer_replace(&dst->mbskip_table_buf, src->mbskip_table_buf);
ret |= av_buffer_replace(&dst->qscale_table_buf, src->qscale_table_buf);
ret |= av_buffer_replace(&dst->mb_type_buf, src->mb_type_buf);
for (i = 0; i < 2; i++) {
UPDATE_TABLE(motion_val_buf[i]);
UPDATE_TABLE(ref_index_buf[i]);
ret |= av_buffer_replace(&dst->motion_val_buf[i], src->motion_val_buf[i]);
ret |= av_buffer_replace(&dst->ref_index_buf[i], src->ref_index_buf[i]);
}
if (ret < 0) {
ff_free_picture_tables(dst);
return ret;
}
dst->mb_var = src->mb_var;