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threads: update slice_count and slice_offset from user context

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They are used to signal the number of slices and offsets of each slice
out of band to the decoder.
This commit is contained in:
Janne Grunau 2012-01-20 13:37:00 +01:00
parent 7ba34575fd
commit afb8b207d6
1 changed files with 21 additions and 3 deletions
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24
libavcodec/pthread.c
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@ -413,7 +413,6 @@ static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src,
dst->has_b_frames = src->has_b_frames;
dst->idct_algo = src->idct_algo;
dst->slice_count = src->slice_count;
dst->bits_per_coded_sample = src->bits_per_coded_sample;
dst->sample_aspect_ratio = src->sample_aspect_ratio;
@ -447,8 +446,9 @@ static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src,
*
* @param dst The destination context.
* @param src The source context.
* @return 0 on success, negative error code on failure
*/
static void update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
static int update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
{
#define copy_fields(s, e) memcpy(&dst->s, &src->s, (char*)&dst->e - (char*)&dst->s);
dst->flags = src->flags;
@ -469,6 +469,22 @@ static void update_context_from_user(AVCodecContext *dst, AVCodecContext *src)
dst->frame_number = src->frame_number;
dst->reordered_opaque = src->reordered_opaque;
if (src->slice_count && src->slice_offset) {
if (dst->slice_count < src->slice_count) {
int *tmp = av_realloc(dst->slice_offset, src->slice_count *
sizeof(*dst->slice_offset));
if (!tmp) {
av_free(dst->slice_offset);
return AVERROR(ENOMEM);
}
dst->slice_offset = tmp;
}
memcpy(dst->slice_offset, src->slice_offset,
src->slice_count * sizeof(*dst->slice_offset));
}
dst->slice_count = src->slice_count;
return 0;
#undef copy_fields
}
@ -579,7 +595,8 @@ int ff_thread_decode_frame(AVCodecContext *avctx,
*/
p = &fctx->threads[fctx->next_decoding];
update_context_from_user(p->avctx, avctx);
err = update_context_from_user(p->avctx, avctx);
if (err) return err;
err = submit_packet(p, avpkt);
if (err) return err;
@ -750,6 +767,7 @@ static void frame_thread_free(AVCodecContext *avctx, int thread_count)
if (i) {
av_freep(&p->avctx->priv_data);
av_freep(&p->avctx->internal);
av_freep(&p->avctx->slice_offset);
}
av_freep(&p->avctx);