// VP9 decoder: Implement multi-threaded loopfilter that uses the tile
// threads.
void vp9_loop_filter_frame_mt(YV12_BUFFER_CONFIG *frame,
VP9Decoder *pbi, VP9_COMMON *cm,
int frame_filter_level,
int y_only) {
VP9LfSync *const lf_sync = &pbi->lf_row_sync;
const VP9WorkerInterface *const winterface = vp9_get_worker_interface();
// Number of superblock rows and cols
const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
const int tile_cols = 1 << cm->log2_tile_cols;
const int num_workers = MIN(pbi->max_threads & ~1, tile_cols);
int i;
if (!frame_filter_level) return;
if (!lf_sync->sync_range || cm->last_height != cm->height) {
vp9_loop_filter_dealloc(lf_sync);
vp9_loop_filter_alloc(lf_sync, cm, sb_rows, cm->width);
}
vp9_loop_filter_frame_init(cm, frame_filter_level);
// Initialize cur_sb_col to -1 for all SB rows.
vpx_memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows);
// Set up loopfilter thread data.
// The decoder is using num_workers instead of pbi->num_tile_workers
// because it has been observed that using more threads on the
// loopfilter, than there are tile columns in the frame will hurt
// performance on Android. This is because the system will only
// schedule the tile decode workers on cores equal to the number
// of tile columns. Then if the decoder tries to use more threads for the
// loopfilter, it will hurt performance because of contention. If the
// multithreading code changes in the future then the number of workers
// used by the loopfilter should be revisited.
for (i = 0; i < num_workers; ++i) {
VP9Worker *const worker = &pbi->tile_workers[i];
TileWorkerData *const tile_data = (TileWorkerData*)worker->data1;
LFWorkerData *const lf_data = &tile_data->lfdata;
worker->hook = (VP9WorkerHook)loop_filter_row_worker;
// Loopfilter data
lf_data->frame_buffer = frame;
lf_data->cm = cm;
vp9_copy(lf_data->planes, pbi->mb.plane);
lf_data->start = i;
lf_data->stop = sb_rows;
lf_data->y_only = y_only; // always do all planes in decoder
lf_data->lf_sync = lf_sync;
lf_data->num_lf_workers = num_workers;
// Start loopfiltering
if (i == num_workers - 1) {
winterface->execute(worker);
} else {
winterface->launch(worker);
}
}
// Wait till all rows are finished
for (i = 0; i < num_workers; ++i) {
winterface->sync(&pbi->tile_workers[i]);
}
}
// VP9 decoder: Implement multi-threaded loopfilter that uses the tile
// threads.
void vp9_loop_filter_frame_mt(VP9Decoder *pbi,
VP9_COMMON *cm,
int frame_filter_level,
int y_only, int partial_frame) {
VP9LfSync *const lf_sync = &pbi->lf_row_sync;
// Number of superblock rows and cols
const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
const int tile_cols = 1 << cm->log2_tile_cols;
const int num_workers = MIN(pbi->oxcf.max_threads & ~1, tile_cols);
int i;
// Allocate memory used in thread synchronization.
// This always needs to be done even if frame_filter_level is 0.
if (!cm->current_video_frame || cm->last_height != cm->height) {
if (cm->last_height != cm->height) {
const int aligned_last_height =
ALIGN_POWER_OF_TWO(cm->last_height, MI_SIZE_LOG2);
const int last_sb_rows =
mi_cols_aligned_to_sb(aligned_last_height >> MI_SIZE_LOG2) >>
MI_BLOCK_SIZE_LOG2;
vp9_loop_filter_dealloc(lf_sync, last_sb_rows);
}
vp9_loop_filter_alloc(cm, lf_sync, sb_rows, cm->width);
}
if (!frame_filter_level) return;
vp9_loop_filter_frame_init(cm, frame_filter_level);
// Initialize cur_sb_col to -1 for all SB rows.
vpx_memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows);
// Set up loopfilter thread data.
// The decoder is using num_workers instead of pbi->num_tile_workers
// because it has been observed that using more threads on the
// loopfilter, than there are tile columns in the frame will hurt
// performance on Android. This is because the system will only
// schedule the tile decode workers on cores equal to the number
// of tile columns. Then if the decoder tries to use more threads for the
// loopfilter, it will hurt performance because of contention. If the
// multithreading code changes in the future then the number of workers
// used by the loopfilter should be revisited.
for (i = 0; i < num_workers; ++i) {
VP9Worker *const worker = &pbi->tile_workers[i];
TileWorkerData *const tile_data = (TileWorkerData*)worker->data1;
LFWorkerData *const lf_data = &tile_data->lfdata;
worker->hook = (VP9WorkerHook)loop_filter_row_worker;
// Loopfilter data
lf_data->frame_buffer = get_frame_new_buffer(cm);
lf_data->cm = cm;
lf_data->xd = pbi->mb;
lf_data->start = i;
lf_data->stop = sb_rows;
lf_data->y_only = y_only; // always do all planes in decoder
lf_data->lf_sync = lf_sync;
lf_data->num_lf_workers = num_workers;
// Start loopfiltering
if (i == num_workers - 1) {
vp9_worker_execute(worker);
} else {
vp9_worker_launch(worker);
}
}
// Wait till all rows are finished
for (i = 0; i < num_workers; ++i) {
vp9_worker_sync(&pbi->tile_workers[i]);
}
}
// VP9 decoder: Implement multi-threaded loopfilter that uses the tile
// threads.
void vp9_loop_filter_frame_mt(VP9LfSync *lf_sync,
YV12_BUFFER_CONFIG *frame,
struct macroblockd_plane planes[MAX_MB_PLANE],
VP9_COMMON *cm,
VP9Worker *workers, int nworkers,
int frame_filter_level,
int y_only) {
const VP9WorkerInterface *const winterface = vp9_get_worker_interface();
// Number of superblock rows and cols
const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
const int tile_cols = 1 << cm->log2_tile_cols;
const int num_workers = MIN(nworkers, tile_cols);
int i;
if (!frame_filter_level) return;
if (!lf_sync->sync_range || cm->last_height != cm->height ||
num_workers > lf_sync->num_workers) {
vp9_loop_filter_dealloc(lf_sync);
vp9_loop_filter_alloc(lf_sync, cm, sb_rows, cm->width, num_workers);
}
vp9_loop_filter_frame_init(cm, frame_filter_level);
// Initialize cur_sb_col to -1 for all SB rows.
vpx_memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows);
// Set up loopfilter thread data.
// The decoder is capping num_workers because it has been observed that using
// more threads on the loopfilter than there are cores will hurt performance
// on Android. This is because the system will only schedule the tile decode
// workers on cores equal to the number of tile columns. Then if the decoder
// tries to use more threads for the loopfilter, it will hurt performance
// because of contention. If the multithreading code changes in the future
// then the number of workers used by the loopfilter should be revisited.
for (i = 0; i < num_workers; ++i) {
VP9Worker *const worker = &workers[i];
LFWorkerData *const lf_data = &lf_sync->lfdata[i];
worker->hook = (VP9WorkerHook)loop_filter_row_worker;
worker->data1 = lf_sync;
worker->data2 = lf_data;
// Loopfilter data
vp9_loop_filter_data_reset(lf_data, frame, cm, planes);
lf_data->start = i;
lf_data->stop = sb_rows;
lf_data->y_only = y_only;
// Start loopfiltering
if (i == num_workers - 1) {
winterface->execute(worker);
} else {
winterface->launch(worker);
}
}
// Wait till all rows are finished
for (i = 0; i < num_workers; ++i) {
winterface->sync(&workers[i]);
}
}
