void vp10_frameworker_copy_context(VPxWorker *const dst_worker,
VPxWorker *const src_worker) {
#if CONFIG_MULTITHREAD
FrameWorkerData *const src_worker_data = (FrameWorkerData *)src_worker->data1;
FrameWorkerData *const dst_worker_data = (FrameWorkerData *)dst_worker->data1;
VP10_COMMON *const src_cm = &src_worker_data->pbi->common;
VP10_COMMON *const dst_cm = &dst_worker_data->pbi->common;
int i;
// Wait until source frame's context is ready.
vp10_frameworker_lock_stats(src_worker);
while (!src_worker_data->frame_context_ready) {
pthread_cond_wait(&src_worker_data->stats_cond,
&src_worker_data->stats_mutex);
}
dst_cm->last_frame_seg_map = src_cm->seg.enabled
? src_cm->current_frame_seg_map
: src_cm->last_frame_seg_map;
dst_worker_data->pbi->need_resync = src_worker_data->pbi->need_resync;
vp10_frameworker_unlock_stats(src_worker);
dst_cm->bit_depth = src_cm->bit_depth;
#if CONFIG_VPX_HIGHBITDEPTH
dst_cm->use_highbitdepth = src_cm->use_highbitdepth;
#endif
dst_cm->prev_frame =
src_cm->show_existing_frame ? src_cm->prev_frame : src_cm->cur_frame;
dst_cm->last_width =
!src_cm->show_existing_frame ? src_cm->width : src_cm->last_width;
dst_cm->last_height =
!src_cm->show_existing_frame ? src_cm->height : src_cm->last_height;
dst_cm->subsampling_x = src_cm->subsampling_x;
dst_cm->subsampling_y = src_cm->subsampling_y;
dst_cm->frame_type = src_cm->frame_type;
dst_cm->last_show_frame = !src_cm->show_existing_frame
? src_cm->show_frame
: src_cm->last_show_frame;
for (i = 0; i < REF_FRAMES; ++i)
dst_cm->ref_frame_map[i] = src_cm->next_ref_frame_map[i];
memcpy(dst_cm->lf_info.lfthr, src_cm->lf_info.lfthr,
(MAX_LOOP_FILTER + 1) * sizeof(loop_filter_thresh));
dst_cm->lf.last_sharpness_level = src_cm->lf.sharpness_level;
dst_cm->lf.filter_level = src_cm->lf.filter_level;
memcpy(dst_cm->lf.ref_deltas, src_cm->lf.ref_deltas, MAX_REF_FRAMES);
memcpy(dst_cm->lf.mode_deltas, src_cm->lf.mode_deltas, MAX_MODE_LF_DELTAS);
dst_cm->seg = src_cm->seg;
memcpy(dst_cm->frame_contexts, src_cm->frame_contexts,
FRAME_CONTEXTS * sizeof(dst_cm->frame_contexts[0]));
#else
(void)dst_worker;
(void)src_worker;
#endif // CONFIG_MULTITHREAD
}
// TODO(hkuang): Remove worker parameter as it is only used in debug code.
void vp10_frameworker_wait(VPxWorker *const worker, RefCntBuffer *const ref_buf,
int row) {
#if CONFIG_MULTITHREAD
if (!ref_buf) return;
#ifndef BUILDING_WITH_TSAN
// The following line of code will get harmless tsan error but it is the key
// to get best performance.
if (ref_buf->row >= row && ref_buf->buf.corrupted != 1) return;
#endif
{
// Find the worker thread that owns the reference frame. If the reference
// frame has been fully decoded, it may not have owner.
VPxWorker *const ref_worker = ref_buf->frame_worker_owner;
FrameWorkerData *const ref_worker_data =
(FrameWorkerData *)ref_worker->data1;
const VP10Decoder *const pbi = ref_worker_data->pbi;
#ifdef DEBUG_THREAD
{
FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1;
printf("%d %p worker is waiting for %d %p worker (%d) ref %d \r\n",
worker_data->worker_id, worker, ref_worker_data->worker_id,
ref_buf->frame_worker_owner, row, ref_buf->row);
}
#endif
vp10_frameworker_lock_stats(ref_worker);
while (ref_buf->row < row && pbi->cur_buf == ref_buf &&
ref_buf->buf.corrupted != 1) {
pthread_cond_wait(&ref_worker_data->stats_cond,
&ref_worker_data->stats_mutex);
}
if (ref_buf->buf.corrupted == 1) {
FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1;
vp10_frameworker_unlock_stats(ref_worker);
vpx_internal_error(&worker_data->pbi->common.error,
VPX_CODEC_CORRUPT_FRAME,
"Worker %p failed to decode frame", worker);
}
vp10_frameworker_unlock_stats(ref_worker);
}
#else
(void)worker;
(void)ref_buf;
(void)row;
(void)ref_buf;
#endif // CONFIG_MULTITHREAD
}
void vp10_frameworker_broadcast(RefCntBuffer *const buf, int row) {
#if CONFIG_MULTITHREAD
VPxWorker *worker = buf->frame_worker_owner;
#ifdef DEBUG_THREAD
{
FrameWorkerData *const worker_data = (FrameWorkerData *)worker->data1;
printf("%d %p worker decode to (%d) \r\n", worker_data->worker_id,
buf->frame_worker_owner, row);
}
#endif
vp10_frameworker_lock_stats(worker);
buf->row = row;
vp10_frameworker_signal_stats(worker);
vp10_frameworker_unlock_stats(worker);
#else
(void)buf;
(void)row;
#endif // CONFIG_MULTITHREAD
}
static int frame_worker_hook(void *arg1, void *arg2) {
FrameWorkerData *const frame_worker_data = (FrameWorkerData *)arg1;
const uint8_t *data = frame_worker_data->data;
(void)arg2;
frame_worker_data->result =
vp10_receive_compressed_data(frame_worker_data->pbi,
frame_worker_data->data_size,
&data);
frame_worker_data->data_end = data;
if (frame_worker_data->pbi->frame_parallel_decode) {
// In frame parallel decoding, a worker thread must successfully decode all
// the compressed data.
if (frame_worker_data->result != 0 ||
frame_worker_data->data + frame_worker_data->data_size - 1 > data) {
VPxWorker *const worker = frame_worker_data->pbi->frame_worker_owner;
BufferPool *const pool = frame_worker_data->pbi->common.buffer_pool;
// Signal all the other threads that are waiting for this frame.
vp10_frameworker_lock_stats(worker);
frame_worker_data->frame_context_ready = 1;
lock_buffer_pool(pool);
frame_worker_data->pbi->cur_buf->buf.corrupted = 1;
unlock_buffer_pool(pool);
frame_worker_data->pbi->need_resync = 1;
vp10_frameworker_signal_stats(worker);
vp10_frameworker_unlock_stats(worker);
return 0;
}
} else if (frame_worker_data->result != 0) {
// Check decode result in serial decode.
frame_worker_data->pbi->cur_buf->buf.corrupted = 1;
frame_worker_data->pbi->need_resync = 1;
}
return !frame_worker_data->result;
}
int vp10_receive_compressed_data(VP10Decoder *pbi,
size_t size, const uint8_t **psource) {
VP10_COMMON *volatile const cm = &pbi->common;
BufferPool *volatile const pool = cm->buffer_pool;
RefCntBuffer *volatile const frame_bufs = cm->buffer_pool->frame_bufs;
const uint8_t *source = *psource;
int retcode = 0;
cm->error.error_code = VPX_CODEC_OK;
if (size == 0) {
// This is used to signal that we are missing frames.
// We do not know if the missing frame(s) was supposed to update
// any of the reference buffers, but we act conservative and
// mark only the last buffer as corrupted.
//
// TODO(jkoleszar): Error concealment is undefined and non-normative
// at this point, but if it becomes so, [0] may not always be the correct
// thing to do here.
if (cm->frame_refs[0].idx > 0) {
assert(cm->frame_refs[0].buf != NULL);
cm->frame_refs[0].buf->corrupted = 1;
}
}
pbi->ready_for_new_data = 0;
// Check if the previous frame was a frame without any references to it.
// Release frame buffer if not decoding in frame parallel mode.
if (!pbi->frame_parallel_decode && cm->new_fb_idx >= 0
&& frame_bufs[cm->new_fb_idx].ref_count == 0)
pool->release_fb_cb(pool->cb_priv,
&frame_bufs[cm->new_fb_idx].raw_frame_buffer);
// Find a free frame buffer. Return error if can not find any.
cm->new_fb_idx = get_free_fb(cm);
if (cm->new_fb_idx == INVALID_IDX)
return VPX_CODEC_MEM_ERROR;
// Assign a MV array to the frame buffer.
cm->cur_frame = &pool->frame_bufs[cm->new_fb_idx];
pbi->hold_ref_buf = 0;
if (pbi->frame_parallel_decode) {
VPxWorker *const worker = pbi->frame_worker_owner;
vp10_frameworker_lock_stats(worker);
frame_bufs[cm->new_fb_idx].frame_worker_owner = worker;
// Reset decoding progress.
pbi->cur_buf = &frame_bufs[cm->new_fb_idx];
pbi->cur_buf->row = -1;
pbi->cur_buf->col = -1;
vp10_frameworker_unlock_stats(worker);
} else {
pbi->cur_buf = &frame_bufs[cm->new_fb_idx];
}
if (setjmp(cm->error.jmp)) {
const VPxWorkerInterface *const winterface = vpx_get_worker_interface();
int i;
cm->error.setjmp = 0;
pbi->ready_for_new_data = 1;
// Synchronize all threads immediately as a subsequent decode call may
// cause a resize invalidating some allocations.
winterface->sync(&pbi->lf_worker);
for (i = 0; i < pbi->num_tile_workers; ++i) {
winterface->sync(&pbi->tile_workers[i]);
}
lock_buffer_pool(pool);
// Release all the reference buffers if worker thread is holding them.
if (pbi->hold_ref_buf == 1) {
int ref_index = 0, mask;
for (mask = pbi->refresh_frame_flags; mask; mask >>= 1) {
const int old_idx = cm->ref_frame_map[ref_index];
// Current thread releases the holding of reference frame.
decrease_ref_count(old_idx, frame_bufs, pool);
// Release the reference frame in reference map.
if ((mask & 1) && old_idx >= 0) {
decrease_ref_count(old_idx, frame_bufs, pool);
}
++ref_index;
}
// Current thread releases the holding of reference frame.
for (; ref_index < REF_FRAMES && !cm->show_existing_frame; ++ref_index) {
const int old_idx = cm->ref_frame_map[ref_index];
decrease_ref_count(old_idx, frame_bufs, pool);
}
pbi->hold_ref_buf = 0;
}
// Release current frame.
decrease_ref_count(cm->new_fb_idx, frame_bufs, pool);
unlock_buffer_pool(pool);
vpx_clear_system_state();
return -1;
}