STATE_SETUP_FINISHED,
};
+enum {
+ UNINITIALIZED, ///< Thread has not been created, AVCodec->close mustn't be called
+ NEEDS_CLOSE, ///< AVCodec->close needs to be called
+ INITIALIZED, ///< Thread has been properly set up
+};
+
/**
* Context used by codec threads and stored in their AVCodecInternal thread_ctx.
*/
pthread_t thread;
int thread_init;
+ unsigned pthread_init_cnt;///< Number of successfully initialized mutexes/conditions
pthread_cond_t input_cond; ///< Used to wait for a new packet from the main thread.
pthread_cond_t progress_cond; ///< Used by child threads to wait for progress to change.
pthread_cond_t output_cond; ///< Used by the main thread to wait for frames to finish.
PerThreadContext *threads; ///< The contexts for each thread.
PerThreadContext *prev_thread; ///< The last thread submit_packet() was called on.
+ unsigned pthread_init_cnt; ///< Number of successfully initialized mutexes/conditions
pthread_mutex_t buffer_mutex; ///< Mutex used to protect get/release_buffer().
/**
* This lock is used for ensuring threads run in serial when hwaccel
}
if (for_user) {
-#if FF_API_CODED_FRAME
-FF_DISABLE_DEPRECATION_WARNINGS
- dst->coded_frame = src->coded_frame;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
+ if (dst->codec->update_thread_context_for_user)
+ err = dst->codec->update_thread_context_for_user(dst, src);
} else {
if (dst->codec->update_thread_context)
err = dst->codec->update_thread_context(dst, src);
async_lock(fctx);
}
+#define SENTINEL 0 // This forbids putting a mutex/condition variable at the front.
+#define OFFSET_ARRAY(...) __VA_ARGS__, SENTINEL
+#define DEFINE_OFFSET_ARRAY(type, name, mutexes, conds) \
+static const unsigned name ## _offsets[] = { offsetof(type, pthread_init_cnt),\
+ OFFSET_ARRAY mutexes, \
+ OFFSET_ARRAY conds }
+
+#define OFF(member) offsetof(FrameThreadContext, member)
+DEFINE_OFFSET_ARRAY(FrameThreadContext, thread_ctx,
+ (OFF(buffer_mutex), OFF(hwaccel_mutex), OFF(async_mutex)),
+ (OFF(async_cond)));
+#undef OFF
+
+#define OFF(member) offsetof(PerThreadContext, member)
+DEFINE_OFFSET_ARRAY(PerThreadContext, per_thread,
+ (OFF(progress_mutex), OFF(mutex)),
+ (OFF(input_cond), OFF(progress_cond), OFF(output_cond)));
+#undef OFF
+
+static av_cold void free_pthread(void *obj, const unsigned offsets[])
+{
+ unsigned cnt = *(unsigned*)((char*)obj + offsets[0]);
+ const unsigned *cur_offset = offsets;
+
+ for (; *(++cur_offset) != SENTINEL && cnt; cnt--)
+ pthread_mutex_destroy((pthread_mutex_t*)((char*)obj + *cur_offset));
+ for (; *(++cur_offset) != SENTINEL && cnt; cnt--)
+ pthread_cond_destroy ((pthread_cond_t *)((char*)obj + *cur_offset));
+}
+
+static av_cold int init_pthread(void *obj, const unsigned offsets[])
+{
+ const unsigned *cur_offset = offsets;
+ unsigned cnt = 0;
+ int err;
+
+#define PTHREAD_INIT_LOOP(type) \
+ for (; *(++cur_offset) != SENTINEL; cnt++) { \
+ pthread_ ## type ## _t *dst = (void*)((char*)obj + *cur_offset); \
+ err = pthread_ ## type ## _init(dst, NULL); \
+ if (err) { \
+ err = AVERROR(err); \
+ goto fail; \
+ } \
+ }
+ PTHREAD_INIT_LOOP(mutex)
+ PTHREAD_INIT_LOOP(cond)
+
+fail:
+ *(unsigned*)((char*)obj + offsets[0]) = cnt;
+ return err;
+}
+
void ff_frame_thread_free(AVCodecContext *avctx, int thread_count)
{
FrameThreadContext *fctx = avctx->internal->thread_ctx;
for (i = 0; i < thread_count; i++) {
PerThreadContext *p = &fctx->threads[i];
+ AVCodecContext *ctx = p->avctx;
- pthread_mutex_lock(&p->mutex);
- p->die = 1;
- pthread_cond_signal(&p->input_cond);
- pthread_mutex_unlock(&p->mutex);
-
- if (p->thread_init)
- pthread_join(p->thread, NULL);
- p->thread_init=0;
+ if (ctx->internal) {
+ if (p->thread_init == INITIALIZED) {
+ pthread_mutex_lock(&p->mutex);
+ p->die = 1;
+ pthread_cond_signal(&p->input_cond);
+ pthread_mutex_unlock(&p->mutex);
- if (codec->close && p->avctx)
- codec->close(p->avctx);
-
-#if FF_API_THREAD_SAFE_CALLBACKS
- release_delayed_buffers(p);
-#endif
- av_frame_free(&p->frame);
- }
-
- for (i = 0; i < thread_count; i++) {
- PerThreadContext *p = &fctx->threads[i];
-
- pthread_mutex_destroy(&p->mutex);
- pthread_mutex_destroy(&p->progress_mutex);
- pthread_cond_destroy(&p->input_cond);
- pthread_cond_destroy(&p->progress_cond);
- pthread_cond_destroy(&p->output_cond);
- av_packet_free(&p->avpkt);
+ pthread_join(p->thread, NULL);
+ }
+ if (codec->close && p->thread_init != UNINITIALIZED)
+ codec->close(ctx);
#if FF_API_THREAD_SAFE_CALLBACKS
- for (int j = 0; j < p->released_buffers_allocated; j++)
- av_frame_free(&p->released_buffers[j]);
- av_freep(&p->released_buffers);
+ release_delayed_buffers(p);
+ for (int j = 0; j < p->released_buffers_allocated; j++)
+ av_frame_free(&p->released_buffers[j]);
+ av_freep(&p->released_buffers);
#endif
+ if (ctx->priv_data) {
+ if (codec->priv_class)
+ av_opt_free(ctx->priv_data);
+ av_freep(&ctx->priv_data);
+ }
- if (p->avctx) {
- if (codec->priv_class)
- av_opt_free(p->avctx->priv_data);
- av_freep(&p->avctx->priv_data);
+ av_freep(&ctx->slice_offset);
- av_freep(&p->avctx->slice_offset);
+ av_buffer_unref(&ctx->internal->pool);
+ av_freep(&ctx->internal);
+ av_buffer_unref(&ctx->hw_frames_ctx);
}
- if (p->avctx) {
- av_buffer_unref(&p->avctx->internal->pool);
- av_freep(&p->avctx->internal);
- av_buffer_unref(&p->avctx->hw_frames_ctx);
- }
+ av_frame_free(&p->frame);
+
+ free_pthread(p, per_thread_offsets);
+ av_packet_free(&p->avpkt);
av_freep(&p->avctx);
}
av_freep(&fctx->threads);
- pthread_mutex_destroy(&fctx->buffer_mutex);
- pthread_mutex_destroy(&fctx->hwaccel_mutex);
- pthread_mutex_destroy(&fctx->async_mutex);
- pthread_cond_destroy(&fctx->async_cond);
+ free_pthread(fctx, thread_ctx_offsets);
av_freep(&avctx->internal->thread_ctx);
avctx->codec = NULL;
}
+static av_cold int init_thread(PerThreadContext *p, int *threads_to_free,
+ FrameThreadContext *fctx, AVCodecContext *avctx,
+ AVCodecContext *src, const AVCodec *codec, int first)
+{
+ AVCodecContext *copy;
+ int err;
+
+ atomic_init(&p->state, STATE_INPUT_READY);
+
+ copy = av_memdup(src, sizeof(*src));
+ if (!copy)
+ return AVERROR(ENOMEM);
+ copy->priv_data = NULL;
+
+ /* From now on, this PerThreadContext will be cleaned up by
+ * ff_frame_thread_free in case of errors. */
+ (*threads_to_free)++;
+
+ p->parent = fctx;
+ p->avctx = copy;
+
+ copy->internal = av_memdup(src->internal, sizeof(*src->internal));
+ if (!copy->internal)
+ return AVERROR(ENOMEM);
+ copy->internal->thread_ctx = p;
+
+ copy->delay = avctx->delay;
+
+ if (codec->priv_data_size) {
+ copy->priv_data = av_mallocz(codec->priv_data_size);
+ if (!copy->priv_data)
+ return AVERROR(ENOMEM);
+
+ if (codec->priv_class) {
+ *(const AVClass **)copy->priv_data = codec->priv_class;
+ err = av_opt_copy(copy->priv_data, src->priv_data);
+ if (err < 0)
+ return err;
+ }
+ }
+
+ err = init_pthread(p, per_thread_offsets);
+ if (err < 0)
+ return err;
+
+ if (!(p->frame = av_frame_alloc()) ||
+ !(p->avpkt = av_packet_alloc()))
+ return AVERROR(ENOMEM);
+ copy->internal->last_pkt_props = p->avpkt;
+
+ if (!first)
+ copy->internal->is_copy = 1;
+
+ if (codec->init) {
+ err = codec->init(copy);
+ if (err < 0) {
+ if (codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)
+ p->thread_init = NEEDS_CLOSE;
+ return err;
+ }
+ }
+ p->thread_init = NEEDS_CLOSE;
+
+ if (first)
+ update_context_from_thread(avctx, copy, 1);
+
+ atomic_init(&p->debug_threads, (copy->debug & FF_DEBUG_THREADS) != 0);
+
+ err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
+ if (err < 0)
+ return err;
+ p->thread_init = INITIALIZED;
+
+ return 0;
+}
+
int ff_frame_thread_init(AVCodecContext *avctx)
{
int thread_count = avctx->thread_count;
const AVCodec *codec = avctx->codec;
AVCodecContext *src = avctx;
FrameThreadContext *fctx;
- int i, err = 0;
+ int err, i = 0;
if (!thread_count) {
int nb_cpus = av_cpu_count();
if (!fctx)
return AVERROR(ENOMEM);
- fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
- if (!fctx->threads) {
+ err = init_pthread(fctx, thread_ctx_offsets);
+ if (err < 0) {
+ free_pthread(fctx, thread_ctx_offsets);
av_freep(&avctx->internal->thread_ctx);
- return AVERROR(ENOMEM);
+ return err;
}
- pthread_mutex_init(&fctx->buffer_mutex, NULL);
- pthread_mutex_init(&fctx->hwaccel_mutex, NULL);
- pthread_mutex_init(&fctx->async_mutex, NULL);
- pthread_cond_init(&fctx->async_cond, NULL);
-
fctx->async_lock = 1;
fctx->delaying = 1;
if (codec->type == AVMEDIA_TYPE_VIDEO)
avctx->delay = src->thread_count - 1;
- for (i = 0; i < thread_count; i++) {
- AVCodecContext *copy = av_malloc(sizeof(AVCodecContext));
- PerThreadContext *p = &fctx->threads[i];
-
- pthread_mutex_init(&p->mutex, NULL);
- pthread_mutex_init(&p->progress_mutex, NULL);
- pthread_cond_init(&p->input_cond, NULL);
- pthread_cond_init(&p->progress_cond, NULL);
- pthread_cond_init(&p->output_cond, NULL);
-
- p->frame = av_frame_alloc();
- if (!p->frame) {
- av_freep(©);
- err = AVERROR(ENOMEM);
- goto error;
- }
- p->avpkt = av_packet_alloc();
- if (!p->avpkt) {
- av_freep(©);
- err = AVERROR(ENOMEM);
- goto error;
- }
-
- p->parent = fctx;
- p->avctx = copy;
-
- if (!copy) {
- err = AVERROR(ENOMEM);
- goto error;
- }
-
- *copy = *src;
-
- copy->internal = av_malloc(sizeof(AVCodecInternal));
- if (!copy->internal) {
- copy->priv_data = NULL;
- err = AVERROR(ENOMEM);
- goto error;
- }
- *copy->internal = *src->internal;
- copy->internal->thread_ctx = p;
- copy->internal->last_pkt_props = p->avpkt;
-
- copy->delay = avctx->delay;
-
- if (codec->priv_data_size) {
- copy->priv_data = av_mallocz(codec->priv_data_size);
- if (!copy->priv_data) {
- err = AVERROR(ENOMEM);
- goto error;
- }
-
- if (codec->priv_class) {
- *(const AVClass **)copy->priv_data = codec->priv_class;
- err = av_opt_copy(copy->priv_data, src->priv_data);
- if (err < 0)
- goto error;
- }
- }
-
- if (i)
- copy->internal->is_copy = 1;
-
- if (codec->init)
- err = codec->init(copy);
-
- if (err) goto error;
-
- if (!i)
- update_context_from_thread(avctx, copy, 1);
+ fctx->threads = av_mallocz_array(thread_count, sizeof(PerThreadContext));
+ if (!fctx->threads) {
+ err = AVERROR(ENOMEM);
+ goto error;
+ }
- atomic_init(&p->debug_threads, (copy->debug & FF_DEBUG_THREADS) != 0);
+ for (; i < thread_count; ) {
+ PerThreadContext *p = &fctx->threads[i];
+ int first = !i;
- err = AVERROR(pthread_create(&p->thread, NULL, frame_worker_thread, p));
- p->thread_init= !err;
- if(!p->thread_init)
+ err = init_thread(p, &i, fctx, avctx, src, codec, first);
+ if (err < 0)
goto error;
}
return 0;
error:
- ff_frame_thread_free(avctx, i+1);
-
+ ff_frame_thread_free(avctx, i);
return err;
}
projects / ffmpeg / blobdiff