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Code Issues Releases Activity

avcodec/pthread_frame: Use RefStruct API for ThreadFrame.progress

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Avoids allocations and error checks and allows to remove
cleanup code for earlier allocations. Also avoids casts
and indirections.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-08-04 18:05:44 +02:00
parent 452089ee23
commit 2ec62b1ca6
4 changed files with 19 additions and 26 deletions
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4
libavcodec/h264_mb.c
View File

@ -66,7 +66,7 @@ static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
// Error resilience puts the current picture in the ref list.
// Don't try to wait on these as it will cause a deadlock.
// Fields can wait on each other, though.
if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
if (ref->parent->tf.progress != h->cur_pic.tf.progress ||
(ref->reference & 3) != h->picture_structure) {
my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
if (refs[0][ref_n] < 0)
@ -79,7 +79,7 @@ static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
int ref_n = sl->ref_cache[1][scan8[n]];
H264Ref *ref = &sl->ref_list[1][ref_n];
if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
if (ref->parent->tf.progress != h->cur_pic.tf.progress ||
(ref->reference & 3) != h->picture_structure) {
my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
if (refs[1][ref_n] < 0)

23
libavcodec/pthread_frame.c
View File

@ -66,6 +66,10 @@ enum {
INITIALIZED, ///< Thread has been properly set up
};
typedef struct ThreadFrameProgress {
atomic_int progress[2];
} ThreadFrameProgress;
/**
* Context used by codec threads and stored in their AVCodecInternal thread_ctx.
*/
@ -585,7 +589,7 @@ finish:
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
{
PerThreadContext *p;
atomic_int *progress = f->progress ? (atomic_int*)f->progress->data : NULL;
atomic_int *progress = f->progress ? f->progress->progress : NULL;
if (!progress ||
atomic_load_explicit(&progress[field], memory_order_relaxed) >= n)
@ -608,7 +612,7 @@ void ff_thread_report_progress(ThreadFrame *f, int n, int field)
void ff_thread_await_progress(const ThreadFrame *f, int n, int field)
{
PerThreadContext *p;
atomic_int *progress = f->progress ? (atomic_int*)f->progress->data : NULL;
atomic_int *progress = f->progress ? f->progress->progress : NULL;
if (!progress ||
atomic_load_explicit(&progress[field], memory_order_acquire) >= n)
@ -991,20 +995,17 @@ int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
return ff_get_buffer(avctx, f->f, flags);
if (ffcodec(avctx->codec)->caps_internal & FF_CODEC_CAP_ALLOCATE_PROGRESS) {
atomic_int *progress;
f->progress = av_buffer_alloc(2 * sizeof(*progress));
if (!f->progress) {
f->progress = ff_refstruct_allocz(sizeof(*f->progress));
if (!f->progress)
return AVERROR(ENOMEM);
}
progress = (atomic_int*)f->progress->data;
atomic_init(&progress[0], -1);
atomic_init(&progress[1], -1);
atomic_init(&f->progress->progress[0], -1);
atomic_init(&f->progress->progress[1], -1);
}
ret = ff_thread_get_buffer(avctx, f->f, flags);
if (ret)
av_buffer_unref(&f->progress);
ff_refstruct_unref(&f->progress);
return ret;
}
@ -1021,7 +1022,7 @@ void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
{
av_buffer_unref(&f->progress);
ff_refstruct_unref(&f->progress);
f->owner[0] = f->owner[1] = NULL;
ff_thread_release_buffer(avctx, f->f);
}

4
libavcodec/threadframe.h
View File

@ -27,9 +27,7 @@
typedef struct ThreadFrame {
AVFrame *f;
AVCodecContext *owner[2];
// progress->data is an array of 2 ints holding progress for top/bottom
// fields
AVBufferRef *progress;
struct ThreadFrameProgress *progress;
} ThreadFrame;
/**

14
libavcodec/utils.c
View File

@ -40,6 +40,7 @@
#include "codec_par.h"
#include "decode.h"
#include "hwconfig.h"
#include "refstruct.h"
#include "thread.h"
#include "threadframe.h"
#include "internal.h"
@ -880,11 +881,8 @@ int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
av_assert0(!dst->progress);
if (src->progress &&
!(dst->progress = av_buffer_ref(src->progress))) {
ff_thread_release_ext_buffer(dst->owner[0], dst);
return AVERROR(ENOMEM);
}
if (src->progress)
dst->progress = ff_refstruct_ref(src->progress);
return 0;
}
@ -901,11 +899,7 @@ int ff_thread_replace_frame(AVCodecContext *avctx, ThreadFrame *dst,
if (ret < 0)
return ret;
ret = av_buffer_replace(&dst->progress, src->progress);
if (ret < 0) {
ff_thread_release_ext_buffer(dst->owner[0], dst);
return ret;
}
ff_refstruct_replace(&dst->progress, src->progress);
return 0;
}