436 lines
14 KiB
C
436 lines
14 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "./vpx_config.h"
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#include "vpx_dsp/vpx_dsp_common.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vp9/common/vp9_thread_common.h"
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#include "vp9/common/vp9_reconinter.h"
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#include "vp9/common/vp9_loopfilter.h"
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#if CONFIG_MULTITHREAD
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static INLINE void mutex_lock(pthread_mutex_t *const mutex) {
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const int kMaxTryLocks = 4000;
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int locked = 0;
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int i;
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for (i = 0; i < kMaxTryLocks; ++i) {
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if (!pthread_mutex_trylock(mutex)) {
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locked = 1;
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break;
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}
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}
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if (!locked)
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pthread_mutex_lock(mutex);
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}
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#endif // CONFIG_MULTITHREAD
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static INLINE void sync_read(VP9LfSync *const lf_sync, int r, int c) {
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#if CONFIG_MULTITHREAD
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const int nsync = lf_sync->sync_range;
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if (r && !(c & (nsync - 1))) {
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pthread_mutex_t *const mutex = &lf_sync->mutex_[r - 1];
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mutex_lock(mutex);
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while (c > lf_sync->cur_sb_col[r - 1] - nsync) {
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pthread_cond_wait(&lf_sync->cond_[r - 1], mutex);
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}
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pthread_mutex_unlock(mutex);
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}
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#else
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(void)lf_sync;
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(void)r;
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(void)c;
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#endif // CONFIG_MULTITHREAD
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}
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static INLINE void sync_write(VP9LfSync *const lf_sync, int r, int c,
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const int sb_cols) {
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#if CONFIG_MULTITHREAD
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const int nsync = lf_sync->sync_range;
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int cur;
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// Only signal when there are enough filtered SB for next row to run.
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int sig = 1;
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if (c < sb_cols - 1) {
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cur = c;
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if (c % nsync)
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sig = 0;
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} else {
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cur = sb_cols + nsync;
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}
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if (sig) {
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mutex_lock(&lf_sync->mutex_[r]);
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lf_sync->cur_sb_col[r] = cur;
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pthread_cond_signal(&lf_sync->cond_[r]);
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pthread_mutex_unlock(&lf_sync->mutex_[r]);
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}
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#else
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(void)lf_sync;
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(void)r;
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(void)c;
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(void)sb_cols;
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#endif // CONFIG_MULTITHREAD
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}
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// Implement row loopfiltering for each thread.
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static INLINE
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void thread_loop_filter_rows(const YV12_BUFFER_CONFIG *const frame_buffer,
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VP9_COMMON *const cm,
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struct macroblockd_plane planes[MAX_MB_PLANE],
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int start, int stop, int y_only,
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VP9LfSync *const lf_sync) {
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const int num_planes = y_only ? 1 : MAX_MB_PLANE;
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const int sb_cols = mi_cols_aligned_to_sb(cm->mi_cols) >> MI_BLOCK_SIZE_LOG2;
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int mi_row, mi_col;
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enum lf_path path;
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if (y_only)
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path = LF_PATH_444;
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else if (planes[1].subsampling_y == 1 && planes[1].subsampling_x == 1)
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path = LF_PATH_420;
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else if (planes[1].subsampling_y == 0 && planes[1].subsampling_x == 0)
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path = LF_PATH_444;
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else
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path = LF_PATH_SLOW;
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for (mi_row = start; mi_row < stop;
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mi_row += lf_sync->num_workers * MI_BLOCK_SIZE) {
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MODE_INFO **const mi = cm->mi_grid_visible + mi_row * cm->mi_stride;
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LOOP_FILTER_MASK *lfm = get_lfm(&cm->lf, mi_row, 0);
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for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE, ++lfm) {
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const int r = mi_row >> MI_BLOCK_SIZE_LOG2;
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const int c = mi_col >> MI_BLOCK_SIZE_LOG2;
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int plane;
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sync_read(lf_sync, r, c);
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vp9_setup_dst_planes(planes, frame_buffer, mi_row, mi_col);
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vp9_adjust_mask(cm, mi_row, mi_col, lfm);
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vp9_filter_block_plane_ss00(cm, &planes[0], mi_row, lfm);
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for (plane = 1; plane < num_planes; ++plane) {
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switch (path) {
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case LF_PATH_420:
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vp9_filter_block_plane_ss11(cm, &planes[plane], mi_row, lfm);
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break;
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case LF_PATH_444:
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vp9_filter_block_plane_ss00(cm, &planes[plane], mi_row, lfm);
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break;
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case LF_PATH_SLOW:
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vp9_filter_block_plane_non420(cm, &planes[plane], mi + mi_col,
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mi_row, mi_col);
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break;
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}
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}
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sync_write(lf_sync, r, c, sb_cols);
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}
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}
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}
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// Row-based multi-threaded loopfilter hook
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static int loop_filter_row_worker(VP9LfSync *const lf_sync,
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LFWorkerData *const lf_data) {
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thread_loop_filter_rows(lf_data->frame_buffer, lf_data->cm, lf_data->planes,
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lf_data->start, lf_data->stop, lf_data->y_only,
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lf_sync);
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return 1;
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}
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static void loop_filter_rows_mt(YV12_BUFFER_CONFIG *frame,
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VP9_COMMON *cm,
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struct macroblockd_plane planes[MAX_MB_PLANE],
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int start, int stop, int y_only,
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VPxWorker *workers, int nworkers,
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VP9LfSync *lf_sync) {
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const VPxWorkerInterface *const winterface = vpx_get_worker_interface();
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// Number of superblock rows and cols
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const int sb_rows = mi_cols_aligned_to_sb(cm->mi_rows) >> MI_BLOCK_SIZE_LOG2;
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// Decoder may allocate more threads than number of tiles based on user's
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// input.
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const int tile_cols = 1 << cm->log2_tile_cols;
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const int num_workers = VPXMIN(nworkers, tile_cols);
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int i;
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if (!lf_sync->sync_range || sb_rows != lf_sync->rows ||
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num_workers > lf_sync->num_workers) {
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vp9_loop_filter_dealloc(lf_sync);
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vp9_loop_filter_alloc(lf_sync, cm, sb_rows, cm->width, num_workers);
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}
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// Initialize cur_sb_col to -1 for all SB rows.
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memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows);
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// Set up loopfilter thread data.
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// The decoder is capping num_workers because it has been observed that using
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// more threads on the loopfilter than there are cores will hurt performance
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// on Android. This is because the system will only schedule the tile decode
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// workers on cores equal to the number of tile columns. Then if the decoder
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// tries to use more threads for the loopfilter, it will hurt performance
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// because of contention. If the multithreading code changes in the future
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// then the number of workers used by the loopfilter should be revisited.
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for (i = 0; i < num_workers; ++i) {
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VPxWorker *const worker = &workers[i];
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LFWorkerData *const lf_data = &lf_sync->lfdata[i];
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worker->hook = (VPxWorkerHook)loop_filter_row_worker;
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worker->data1 = lf_sync;
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worker->data2 = lf_data;
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// Loopfilter data
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vp9_loop_filter_data_reset(lf_data, frame, cm, planes);
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lf_data->start = start + i * MI_BLOCK_SIZE;
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lf_data->stop = stop;
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lf_data->y_only = y_only;
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// Start loopfiltering
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if (i == num_workers - 1) {
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winterface->execute(worker);
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} else {
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winterface->launch(worker);
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}
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}
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// Wait till all rows are finished
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for (i = 0; i < num_workers; ++i) {
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winterface->sync(&workers[i]);
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}
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}
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void vp9_loop_filter_frame_mt(YV12_BUFFER_CONFIG *frame,
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VP9_COMMON *cm,
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struct macroblockd_plane planes[MAX_MB_PLANE],
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int frame_filter_level,
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int y_only, int partial_frame,
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VPxWorker *workers, int num_workers,
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VP9LfSync *lf_sync) {
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int start_mi_row, end_mi_row, mi_rows_to_filter;
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if (!frame_filter_level) return;
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start_mi_row = 0;
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mi_rows_to_filter = cm->mi_rows;
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if (partial_frame && cm->mi_rows > 8) {
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start_mi_row = cm->mi_rows >> 1;
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start_mi_row &= 0xfffffff8;
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mi_rows_to_filter = VPXMAX(cm->mi_rows / 8, 8);
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}
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end_mi_row = start_mi_row + mi_rows_to_filter;
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vp9_loop_filter_frame_init(cm, frame_filter_level);
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loop_filter_rows_mt(frame, cm, planes, start_mi_row, end_mi_row,
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y_only, workers, num_workers, lf_sync);
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}
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// Set up nsync by width.
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static INLINE int get_sync_range(int width) {
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// nsync numbers are picked by testing. For example, for 4k
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// video, using 4 gives best performance.
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if (width < 640)
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return 1;
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else if (width <= 1280)
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return 2;
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else if (width <= 4096)
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return 4;
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else
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return 8;
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}
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// Allocate memory for lf row synchronization
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void vp9_loop_filter_alloc(VP9LfSync *lf_sync, VP9_COMMON *cm, int rows,
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int width, int num_workers) {
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lf_sync->rows = rows;
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#if CONFIG_MULTITHREAD
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{
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int i;
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CHECK_MEM_ERROR(cm, lf_sync->mutex_,
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vpx_malloc(sizeof(*lf_sync->mutex_) * rows));
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if (lf_sync->mutex_) {
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for (i = 0; i < rows; ++i) {
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pthread_mutex_init(&lf_sync->mutex_[i], NULL);
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}
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}
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CHECK_MEM_ERROR(cm, lf_sync->cond_,
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vpx_malloc(sizeof(*lf_sync->cond_) * rows));
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if (lf_sync->cond_) {
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for (i = 0; i < rows; ++i) {
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pthread_cond_init(&lf_sync->cond_[i], NULL);
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}
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}
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}
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#endif // CONFIG_MULTITHREAD
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CHECK_MEM_ERROR(cm, lf_sync->lfdata,
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vpx_malloc(num_workers * sizeof(*lf_sync->lfdata)));
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lf_sync->num_workers = num_workers;
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CHECK_MEM_ERROR(cm, lf_sync->cur_sb_col,
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vpx_malloc(sizeof(*lf_sync->cur_sb_col) * rows));
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// Set up nsync.
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lf_sync->sync_range = get_sync_range(width);
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}
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// Deallocate lf synchronization related mutex and data
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void vp9_loop_filter_dealloc(VP9LfSync *lf_sync) {
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if (lf_sync != NULL) {
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#if CONFIG_MULTITHREAD
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int i;
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if (lf_sync->mutex_ != NULL) {
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for (i = 0; i < lf_sync->rows; ++i) {
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pthread_mutex_destroy(&lf_sync->mutex_[i]);
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}
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vpx_free(lf_sync->mutex_);
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}
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if (lf_sync->cond_ != NULL) {
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for (i = 0; i < lf_sync->rows; ++i) {
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pthread_cond_destroy(&lf_sync->cond_[i]);
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}
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vpx_free(lf_sync->cond_);
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}
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#endif // CONFIG_MULTITHREAD
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vpx_free(lf_sync->lfdata);
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vpx_free(lf_sync->cur_sb_col);
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// clear the structure as the source of this call may be a resize in which
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// case this call will be followed by an _alloc() which may fail.
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vp9_zero(*lf_sync);
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}
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}
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// Accumulate frame counts.
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void vp9_accumulate_frame_counts(FRAME_COUNTS *accum,
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const FRAME_COUNTS *counts, int is_dec) {
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int i, j, k, l, m;
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for (i = 0; i < BLOCK_SIZE_GROUPS; i++)
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for (j = 0; j < INTRA_MODES; j++)
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accum->y_mode[i][j] += counts->y_mode[i][j];
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for (i = 0; i < INTRA_MODES; i++)
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for (j = 0; j < INTRA_MODES; j++)
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accum->uv_mode[i][j] += counts->uv_mode[i][j];
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for (i = 0; i < PARTITION_CONTEXTS; i++)
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for (j = 0; j < PARTITION_TYPES; j++)
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accum->partition[i][j] += counts->partition[i][j];
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if (is_dec) {
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int n;
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for (i = 0; i < TX_SIZES; i++)
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for (j = 0; j < PLANE_TYPES; j++)
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for (k = 0; k < REF_TYPES; k++)
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for (l = 0; l < COEF_BANDS; l++)
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for (m = 0; m < COEFF_CONTEXTS; m++) {
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accum->eob_branch[i][j][k][l][m] +=
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counts->eob_branch[i][j][k][l][m];
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for (n = 0; n < UNCONSTRAINED_NODES + 1; n++)
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accum->coef[i][j][k][l][m][n] +=
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counts->coef[i][j][k][l][m][n];
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}
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} else {
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for (i = 0; i < TX_SIZES; i++)
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for (j = 0; j < PLANE_TYPES; j++)
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for (k = 0; k < REF_TYPES; k++)
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for (l = 0; l < COEF_BANDS; l++)
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for (m = 0; m < COEFF_CONTEXTS; m++)
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accum->eob_branch[i][j][k][l][m] +=
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counts->eob_branch[i][j][k][l][m];
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// In the encoder, coef is only updated at frame
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// level, so not need to accumulate it here.
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// for (n = 0; n < UNCONSTRAINED_NODES + 1; n++)
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// accum->coef[i][j][k][l][m][n] +=
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// counts->coef[i][j][k][l][m][n];
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}
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for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
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for (j = 0; j < SWITCHABLE_FILTERS; j++)
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accum->switchable_interp[i][j] += counts->switchable_interp[i][j];
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for (i = 0; i < INTER_MODE_CONTEXTS; i++)
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for (j = 0; j < INTER_MODES; j++)
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accum->inter_mode[i][j] += counts->inter_mode[i][j];
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for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
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for (j = 0; j < 2; j++)
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accum->intra_inter[i][j] += counts->intra_inter[i][j];
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for (i = 0; i < COMP_INTER_CONTEXTS; i++)
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for (j = 0; j < 2; j++)
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accum->comp_inter[i][j] += counts->comp_inter[i][j];
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for (i = 0; i < REF_CONTEXTS; i++)
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for (j = 0; j < 2; j++)
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for (k = 0; k < 2; k++)
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accum->single_ref[i][j][k] += counts->single_ref[i][j][k];
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for (i = 0; i < REF_CONTEXTS; i++)
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for (j = 0; j < 2; j++)
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accum->comp_ref[i][j] += counts->comp_ref[i][j];
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for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
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for (j = 0; j < TX_SIZES; j++)
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accum->tx.p32x32[i][j] += counts->tx.p32x32[i][j];
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for (j = 0; j < TX_SIZES - 1; j++)
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accum->tx.p16x16[i][j] += counts->tx.p16x16[i][j];
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for (j = 0; j < TX_SIZES - 2; j++)
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accum->tx.p8x8[i][j] += counts->tx.p8x8[i][j];
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}
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for (i = 0; i < TX_SIZES; i++)
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accum->tx.tx_totals[i] += counts->tx.tx_totals[i];
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for (i = 0; i < SKIP_CONTEXTS; i++)
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for (j = 0; j < 2; j++)
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accum->skip[i][j] += counts->skip[i][j];
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for (i = 0; i < MV_JOINTS; i++)
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accum->mv.joints[i] += counts->mv.joints[i];
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for (k = 0; k < 2; k++) {
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nmv_component_counts *const comps = &accum->mv.comps[k];
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const nmv_component_counts *const comps_t = &counts->mv.comps[k];
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for (i = 0; i < 2; i++) {
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comps->sign[i] += comps_t->sign[i];
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comps->class0_hp[i] += comps_t->class0_hp[i];
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comps->hp[i] += comps_t->hp[i];
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}
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for (i = 0; i < MV_CLASSES; i++)
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comps->classes[i] += comps_t->classes[i];
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for (i = 0; i < CLASS0_SIZE; i++) {
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comps->class0[i] += comps_t->class0[i];
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for (j = 0; j < MV_FP_SIZE; j++)
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comps->class0_fp[i][j] += comps_t->class0_fp[i][j];
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}
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for (i = 0; i < MV_OFFSET_BITS; i++)
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for (j = 0; j < 2; j++)
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comps->bits[i][j] += comps_t->bits[i][j];
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for (i = 0; i < MV_FP_SIZE; i++)
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comps->fp[i] += comps_t->fp[i];
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}
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}
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