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avcodec/pthread_frame: Don't prematurily presume frame-threading 

Several of our decoders support both frame- as well as slice-threading;
in case of the latter avctx->internal->thread_ctx points to
a SliceThreadContext, not to a frame-thread PerThreadContext.
So only treat avctx->internal->thread_ctx as the latter after
having checked that frame-threading is active.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-02-06 13:28:01 +01:00
parent ce43e1c581
commit 7bf38eb000
1 changed files with 7 additions and 3 deletions
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10
libavcodec/pthread_frame.c
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@ -949,7 +949,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int flags)
{
PerThreadContext *p = avctx->internal->thread_ctx;
PerThreadContext *p;
int err;
f->owner[0] = f->owner[1] = avctx;
@ -957,6 +957,7 @@ static int thread_get_buffer_internal(AVCodecContext *avctx, ThreadFrame *f, int
if (!(avctx->active_thread_type & FF_THREAD_FRAME))
return ff_get_buffer(avctx, f->f, flags);
p = avctx->internal->thread_ctx;
FF_DISABLE_DEPRECATION_WARNINGS
if (atomic_load(&p->state) != STATE_SETTING_UP &&
(avctx->codec->update_thread_context
@ -1020,10 +1021,12 @@ FF_DISABLE_DEPRECATION_WARNINGS
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
{
enum AVPixelFormat res;
PerThreadContext *p = avctx->internal->thread_ctx;
PerThreadContext *p;
if (!(avctx->active_thread_type & FF_THREAD_FRAME) || avctx->thread_safe_callbacks ||
avctx->get_format == avcodec_default_get_format)
return ff_get_format(avctx, fmt);
p = avctx->internal->thread_ctx;
if (atomic_load(&p->state) != STATE_SETTING_UP) {
av_log(avctx, AV_LOG_ERROR, "get_format() cannot be called after ff_thread_finish_setup()\n");
return -1;
@ -1057,7 +1060,7 @@ void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
{
#if FF_API_THREAD_SAFE_CALLBACKS
FF_DISABLE_DEPRECATION_WARNINGS
PerThreadContext *p = avctx->internal->thread_ctx;
PerThreadContext *p;
FrameThreadContext *fctx;
AVFrame *dst;
int ret = 0;
@ -1084,6 +1087,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
return;
}
p = avctx->internal->thread_ctx;
fctx = p->parent;
pthread_mutex_lock(&fctx->buffer_mutex);