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Diffstat (limited to 'third_party/aom/av1/common/thread_common.c')
| -rw-r--r-- | third_party/aom/av1/common/thread_common.c | 529 |
1 files changed, 529 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/thread_common.c b/third_party/aom/av1/common/thread_common.c new file mode 100644 index 000000000..ca8b1b3bd --- /dev/null +++ b/third_party/aom/av1/common/thread_common.c @@ -0,0 +1,529 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include "./aom_config.h" +#include "aom_dsp/aom_dsp_common.h" +#include "aom_mem/aom_mem.h" +#include "av1/common/entropymode.h" +#include "av1/common/thread_common.h" +#include "av1/common/reconinter.h" + +#if CONFIG_MULTITHREAD +static INLINE void mutex_lock(pthread_mutex_t *const mutex) { + const int kMaxTryLocks = 4000; + int locked = 0; + int i; + + for (i = 0; i < kMaxTryLocks; ++i) { + if (!pthread_mutex_trylock(mutex)) { + locked = 1; + break; + } + } + + if (!locked) pthread_mutex_lock(mutex); +} +#endif // CONFIG_MULTITHREAD + +static INLINE void sync_read(AV1LfSync *const lf_sync, int r, int c) { +#if CONFIG_MULTITHREAD + const int nsync = lf_sync->sync_range; + + if (r && !(c & (nsync - 1))) { + pthread_mutex_t *const mutex = &lf_sync->mutex_[r - 1]; + mutex_lock(mutex); + + while (c > lf_sync->cur_sb_col[r - 1] - nsync) { + pthread_cond_wait(&lf_sync->cond_[r - 1], mutex); + } + pthread_mutex_unlock(mutex); + } +#else + (void)lf_sync; + (void)r; + (void)c; +#endif // CONFIG_MULTITHREAD +} + +static INLINE void sync_write(AV1LfSync *const lf_sync, int r, int c, + const int sb_cols) { +#if CONFIG_MULTITHREAD + const int nsync = lf_sync->sync_range; + int cur; + // Only signal when there are enough filtered SB for next row to run. + int sig = 1; + + if (c < sb_cols - 1) { + cur = c; + if (c % nsync) sig = 0; + } else { + cur = sb_cols + nsync; + } + + if (sig) { + mutex_lock(&lf_sync->mutex_[r]); + + lf_sync->cur_sb_col[r] = cur; + + pthread_cond_signal(&lf_sync->cond_[r]); + pthread_mutex_unlock(&lf_sync->mutex_[r]); + } +#else + (void)lf_sync; + (void)r; + (void)c; + (void)sb_cols; +#endif // CONFIG_MULTITHREAD +} + +#if !CONFIG_EXT_PARTITION_TYPES +static INLINE enum lf_path get_loop_filter_path( + int y_only, struct macroblockd_plane planes[MAX_MB_PLANE]) { + if (y_only) + return LF_PATH_444; + else if (planes[1].subsampling_y == 1 && planes[1].subsampling_x == 1) + return LF_PATH_420; + else if (planes[1].subsampling_y == 0 && planes[1].subsampling_x == 0) + return LF_PATH_444; + else + return LF_PATH_SLOW; +} + +static INLINE void loop_filter_block_plane_ver( + AV1_COMMON *cm, struct macroblockd_plane planes[MAX_MB_PLANE], int plane, + MODE_INFO **mi, int mi_row, int mi_col, enum lf_path path, + LOOP_FILTER_MASK *lfm) { + if (plane == 0) { + av1_filter_block_plane_ss00_ver(cm, &planes[0], mi_row, lfm); + } else { + switch (path) { + case LF_PATH_420: + av1_filter_block_plane_ss11_ver(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_444: + av1_filter_block_plane_ss00_ver(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_SLOW: + av1_filter_block_plane_non420_ver(cm, &planes[plane], mi, mi_row, + mi_col); + break; + } + } +} + +static INLINE void loop_filter_block_plane_hor( + AV1_COMMON *cm, struct macroblockd_plane planes[MAX_MB_PLANE], int plane, + MODE_INFO **mi, int mi_row, int mi_col, enum lf_path path, + LOOP_FILTER_MASK *lfm) { + if (plane == 0) { + av1_filter_block_plane_ss00_hor(cm, &planes[0], mi_row, lfm); + } else { + switch (path) { + case LF_PATH_420: + av1_filter_block_plane_ss11_hor(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_444: + av1_filter_block_plane_ss00_hor(cm, &planes[plane], mi_row, lfm); + break; + case LF_PATH_SLOW: + av1_filter_block_plane_non420_hor(cm, &planes[plane], mi, mi_row, + mi_col); + break; + } + } +} +#endif +// Row-based multi-threaded loopfilter hook +#if CONFIG_PARALLEL_DEBLOCKING +static int loop_filter_ver_row_worker(AV1LfSync *const lf_sync, + LFWorkerData *const lf_data) { + const int num_planes = lf_data->y_only ? 1 : MAX_MB_PLANE; + int mi_row, mi_col; +#if !CONFIG_EXT_PARTITION_TYPES + enum lf_path path = get_loop_filter_path(lf_data->y_only, lf_data->planes); +#endif + for (mi_row = lf_data->start; mi_row < lf_data->stop; + mi_row += lf_sync->num_workers * lf_data->cm->mib_size) { + MODE_INFO **const mi = + lf_data->cm->mi_grid_visible + mi_row * lf_data->cm->mi_stride; + + for (mi_col = 0; mi_col < lf_data->cm->mi_cols; + mi_col += lf_data->cm->mib_size) { + LOOP_FILTER_MASK lfm; + int plane; + + av1_setup_dst_planes(lf_data->planes, lf_data->cm->sb_size, + lf_data->frame_buffer, mi_row, mi_col); + av1_setup_mask(lf_data->cm, mi_row, mi_col, mi + mi_col, + lf_data->cm->mi_stride, &lfm); + +#if CONFIG_EXT_PARTITION_TYPES + for (plane = 0; plane < num_planes; ++plane) + av1_filter_block_plane_non420_ver(lf_data->cm, &lf_data->planes[plane], + mi + mi_col, mi_row, mi_col); +#else + + for (plane = 0; plane < num_planes; ++plane) + loop_filter_block_plane_ver(lf_data->cm, lf_data->planes, plane, + mi + mi_col, mi_row, mi_col, path, &lfm); +#endif + } + } + return 1; +} + +static int loop_filter_hor_row_worker(AV1LfSync *const lf_sync, + LFWorkerData *const lf_data) { + const int num_planes = lf_data->y_only ? 1 : MAX_MB_PLANE; + const int sb_cols = + mi_cols_aligned_to_sb(lf_data->cm) >> lf_data->cm->mib_size_log2; + int mi_row, mi_col; +#if !CONFIG_EXT_PARTITION_TYPES + enum lf_path path = get_loop_filter_path(lf_data->y_only, lf_data->planes); +#endif + + for (mi_row = lf_data->start; mi_row < lf_data->stop; + mi_row += lf_sync->num_workers * lf_data->cm->mib_size) { + MODE_INFO **const mi = + lf_data->cm->mi_grid_visible + mi_row * lf_data->cm->mi_stride; + + for (mi_col = 0; mi_col < lf_data->cm->mi_cols; + mi_col += lf_data->cm->mib_size) { + const int r = mi_row >> lf_data->cm->mib_size_log2; + const int c = mi_col >> lf_data->cm->mib_size_log2; + LOOP_FILTER_MASK lfm; + int plane; + + // TODO(wenhao.zhang@intel.com): For better parallelization, reorder + // the outer loop to column-based and remove the synchronizations here. + sync_read(lf_sync, r, c); + + av1_setup_dst_planes(lf_data->planes, lf_data->cm->sb_size, + lf_data->frame_buffer, mi_row, mi_col); + av1_setup_mask(lf_data->cm, mi_row, mi_col, mi + mi_col, + lf_data->cm->mi_stride, &lfm); +#if CONFIG_EXT_PARTITION_TYPES + for (plane = 0; plane < num_planes; ++plane) + av1_filter_block_plane_non420_hor(lf_data->cm, &lf_data->planes[plane], + mi + mi_col, mi_row, mi_col); +#else + for (plane = 0; plane < num_planes; ++plane) + loop_filter_block_plane_hor(lf_data->cm, lf_data->planes, plane, + mi + mi_col, mi_row, mi_col, path, &lfm); +#endif + sync_write(lf_sync, r, c, sb_cols); + } + } + return 1; +} +#else // CONFIG_PARALLEL_DEBLOCKING +static int loop_filter_row_worker(AV1LfSync *const lf_sync, + LFWorkerData *const lf_data) { + const int num_planes = lf_data->y_only ? 1 : MAX_MB_PLANE; + const int sb_cols = + mi_cols_aligned_to_sb(lf_data->cm) >> lf_data->cm->mib_size_log2; + int mi_row, mi_col; +#if !CONFIG_EXT_PARTITION_TYPES + enum lf_path path = get_loop_filter_path(lf_data->y_only, lf_data->planes); +#endif // !CONFIG_EXT_PARTITION_TYPES + +#if CONFIG_EXT_PARTITION + printf( + "STOPPING: This code has not been modified to work with the " + "extended coding unit size experiment"); + exit(EXIT_FAILURE); +#endif // CONFIG_EXT_PARTITION + + for (mi_row = lf_data->start; mi_row < lf_data->stop; + mi_row += lf_sync->num_workers * lf_data->cm->mib_size) { + MODE_INFO **const mi = + lf_data->cm->mi_grid_visible + mi_row * lf_data->cm->mi_stride; + + for (mi_col = 0; mi_col < lf_data->cm->mi_cols; + mi_col += lf_data->cm->mib_size) { + const int r = mi_row >> lf_data->cm->mib_size_log2; + const int c = mi_col >> lf_data->cm->mib_size_log2; +#if !CONFIG_EXT_PARTITION_TYPES + LOOP_FILTER_MASK lfm; +#endif + int plane; + + sync_read(lf_sync, r, c); + + av1_setup_dst_planes(lf_data->planes, lf_data->cm->sb_size, + lf_data->frame_buffer, mi_row, mi_col); +#if CONFIG_EXT_PARTITION_TYPES + for (plane = 0; plane < num_planes; ++plane) { + av1_filter_block_plane_non420_ver(lf_data->cm, &lf_data->planes[plane], + mi + mi_col, mi_row, mi_col); + av1_filter_block_plane_non420_hor(lf_data->cm, &lf_data->planes[plane], + mi + mi_col, mi_row, mi_col); + } +#else + av1_setup_mask(lf_data->cm, mi_row, mi_col, mi + mi_col, + lf_data->cm->mi_stride, &lfm); + + for (plane = 0; plane < num_planes; ++plane) { + loop_filter_block_plane_ver(lf_data->cm, lf_data->planes, plane, + mi + mi_col, mi_row, mi_col, path, &lfm); + loop_filter_block_plane_hor(lf_data->cm, lf_data->planes, plane, + mi + mi_col, mi_row, mi_col, path, &lfm); + } +#endif // CONFIG_EXT_PARTITION_TYPES + sync_write(lf_sync, r, c, sb_cols); + } + } + return 1; +} +#endif // CONFIG_PARALLEL_DEBLOCKING + +static void loop_filter_rows_mt(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm, + struct macroblockd_plane planes[MAX_MB_PLANE], + int start, int stop, int y_only, + AVxWorker *workers, int nworkers, + AV1LfSync *lf_sync) { + const AVxWorkerInterface *const winterface = aom_get_worker_interface(); + // Number of superblock rows and cols + const int sb_rows = mi_rows_aligned_to_sb(cm) >> cm->mib_size_log2; + // Decoder may allocate more threads than number of tiles based on user's + // input. + const int tile_cols = cm->tile_cols; + const int num_workers = AOMMIN(nworkers, tile_cols); + int i; + +#if CONFIG_EXT_PARTITION + printf( + "STOPPING: This code has not been modified to work with the " + "extended coding unit size experiment"); + exit(EXIT_FAILURE); +#endif // CONFIG_EXT_PARTITION + + if (!lf_sync->sync_range || sb_rows != lf_sync->rows || + num_workers > lf_sync->num_workers) { + av1_loop_filter_dealloc(lf_sync); + av1_loop_filter_alloc(lf_sync, cm, sb_rows, cm->width, num_workers); + } + +// 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. + +#if CONFIG_PARALLEL_DEBLOCKING + // Initialize cur_sb_col to -1 for all SB rows. + memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows); + + // Filter all the vertical edges in the whole frame + for (i = 0; i < num_workers; ++i) { + AVxWorker *const worker = &workers[i]; + LFWorkerData *const lf_data = &lf_sync->lfdata[i]; + + worker->hook = (AVxWorkerHook)loop_filter_ver_row_worker; + worker->data1 = lf_sync; + worker->data2 = lf_data; + + // Loopfilter data + av1_loop_filter_data_reset(lf_data, frame, cm, planes); + lf_data->start = start + i * cm->mib_size; + lf_data->stop = stop; + 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]); + } + + memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows); + // Filter all the horizontal edges in the whole frame + for (i = 0; i < num_workers; ++i) { + AVxWorker *const worker = &workers[i]; + LFWorkerData *const lf_data = &lf_sync->lfdata[i]; + + worker->hook = (AVxWorkerHook)loop_filter_hor_row_worker; + worker->data1 = lf_sync; + worker->data2 = lf_data; + + // Loopfilter data + av1_loop_filter_data_reset(lf_data, frame, cm, planes); + lf_data->start = start + i * cm->mib_size; + lf_data->stop = stop; + 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]); + } +#else // CONFIG_PARALLEL_DEBLOCKING + // Initialize cur_sb_col to -1 for all SB rows. + memset(lf_sync->cur_sb_col, -1, sizeof(*lf_sync->cur_sb_col) * sb_rows); + + for (i = 0; i < num_workers; ++i) { + AVxWorker *const worker = &workers[i]; + LFWorkerData *const lf_data = &lf_sync->lfdata[i]; + + worker->hook = (AVxWorkerHook)loop_filter_row_worker; + worker->data1 = lf_sync; + worker->data2 = lf_data; + + // Loopfilter data + av1_loop_filter_data_reset(lf_data, frame, cm, planes); + lf_data->start = start + i * cm->mib_size; + lf_data->stop = stop; + 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]); + } +#endif // CONFIG_PARALLEL_DEBLOCKING +} + +void av1_loop_filter_frame_mt(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm, + struct macroblockd_plane planes[MAX_MB_PLANE], + int frame_filter_level, int y_only, + int partial_frame, AVxWorker *workers, + int num_workers, AV1LfSync *lf_sync) { + int start_mi_row, end_mi_row, mi_rows_to_filter; + + if (!frame_filter_level) return; + + start_mi_row = 0; + mi_rows_to_filter = cm->mi_rows; + if (partial_frame && cm->mi_rows > 8) { + start_mi_row = cm->mi_rows >> 1; + start_mi_row &= 0xfffffff8; + mi_rows_to_filter = AOMMAX(cm->mi_rows / 8, 8); + } + end_mi_row = start_mi_row + mi_rows_to_filter; + av1_loop_filter_frame_init(cm, frame_filter_level); + + loop_filter_rows_mt(frame, cm, planes, start_mi_row, end_mi_row, y_only, + workers, num_workers, lf_sync); +} + +// Set up nsync by width. +static INLINE int get_sync_range(int width) { + // nsync numbers are picked by testing. For example, for 4k + // video, using 4 gives best performance. + if (width < 640) + return 1; + else if (width <= 1280) + return 2; + else if (width <= 4096) + return 4; + else + return 8; +} + +// Allocate memory for lf row synchronization +void av1_loop_filter_alloc(AV1LfSync *lf_sync, AV1_COMMON *cm, int rows, + int width, int num_workers) { + lf_sync->rows = rows; +#if CONFIG_MULTITHREAD + { + int i; + + CHECK_MEM_ERROR(cm, lf_sync->mutex_, + aom_malloc(sizeof(*lf_sync->mutex_) * rows)); + if (lf_sync->mutex_) { + for (i = 0; i < rows; ++i) { + pthread_mutex_init(&lf_sync->mutex_[i], NULL); + } + } + + CHECK_MEM_ERROR(cm, lf_sync->cond_, + aom_malloc(sizeof(*lf_sync->cond_) * rows)); + if (lf_sync->cond_) { + for (i = 0; i < rows; ++i) { + pthread_cond_init(&lf_sync->cond_[i], NULL); + } + } + } +#endif // CONFIG_MULTITHREAD + + CHECK_MEM_ERROR(cm, lf_sync->lfdata, + aom_malloc(num_workers * sizeof(*lf_sync->lfdata))); + lf_sync->num_workers = num_workers; + + CHECK_MEM_ERROR(cm, lf_sync->cur_sb_col, + aom_malloc(sizeof(*lf_sync->cur_sb_col) * rows)); + + // Set up nsync. + lf_sync->sync_range = get_sync_range(width); +} + +// Deallocate lf synchronization related mutex and data +void av1_loop_filter_dealloc(AV1LfSync *lf_sync) { + if (lf_sync != NULL) { +#if CONFIG_MULTITHREAD + int i; + + if (lf_sync->mutex_ != NULL) { + for (i = 0; i < lf_sync->rows; ++i) { + pthread_mutex_destroy(&lf_sync->mutex_[i]); + } + aom_free(lf_sync->mutex_); + } + if (lf_sync->cond_ != NULL) { + for (i = 0; i < lf_sync->rows; ++i) { + pthread_cond_destroy(&lf_sync->cond_[i]); + } + aom_free(lf_sync->cond_); + } +#endif // CONFIG_MULTITHREAD + aom_free(lf_sync->lfdata); + aom_free(lf_sync->cur_sb_col); + // clear the structure as the source of this call may be a resize in which + // case this call will be followed by an _alloc() which may fail. + av1_zero(*lf_sync); + } +} + +// Accumulate frame counts. FRAME_COUNTS consist solely of 'unsigned int' +// members, so we treat it as an array, and sum over the whole length. +void av1_accumulate_frame_counts(FRAME_COUNTS *acc_counts, + FRAME_COUNTS *counts) { + unsigned int *const acc = (unsigned int *)acc_counts; + const unsigned int *const cnt = (unsigned int *)counts; + + const unsigned int n_counts = sizeof(FRAME_COUNTS) / sizeof(unsigned int); + unsigned int i; + + for (i = 0; i < n_counts; i++) acc[i] += cnt[i]; +} |