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-rw-r--r--media/libvpx/vp9/common/vp9_thread_common.c436
1 files changed, 436 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/vp9_thread_common.c b/media/libvpx/vp9/common/vp9_thread_common.c
new file mode 100644
index 000000000..cba57ff41
--- /dev/null
+++ b/media/libvpx/vp9/common/vp9_thread_common.c
@@ -0,0 +1,436 @@
+/*
+ * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "./vpx_config.h"
+#include "vpx_mem/vpx_mem.h"
+#include "vp9/common/vp9_entropymode.h"
+#include "vp9/common/vp9_thread_common.h"
+#include "vp9/common/vp9_reconinter.h"
+#include "vp9/common/vp9_loopfilter.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(VP9LfSync *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(VP9LfSync *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
+}
+
+// Implement row loopfiltering for each thread.
+static INLINE
+void thread_loop_filter_rows(const YV12_BUFFER_CONFIG *const frame_buffer,
+ VP9_COMMON *const cm,
+ struct macroblockd_plane planes[MAX_MB_PLANE],
+ int start, int stop, int y_only,
+ VP9LfSync *const lf_sync) {
+ const int num_planes = y_only ? 1 : MAX_MB_PLANE;
+ const int sb_cols = mi_cols_aligned_to_sb(cm->mi_cols) >> MI_BLOCK_SIZE_LOG2;
+ int mi_row, mi_col;
+ enum lf_path path;
+ if (y_only)
+ path = LF_PATH_444;
+ else if (planes[1].subsampling_y == 1 && planes[1].subsampling_x == 1)
+ path = LF_PATH_420;
+ else if (planes[1].subsampling_y == 0 && planes[1].subsampling_x == 0)
+ path = LF_PATH_444;
+ else
+ path = LF_PATH_SLOW;
+
+ for (mi_row = start; mi_row < stop;
+ mi_row += lf_sync->num_workers * MI_BLOCK_SIZE) {
+ MODE_INFO **const mi = cm->mi_grid_visible + mi_row * cm->mi_stride;
+
+ for (mi_col = 0; mi_col < cm->mi_cols; mi_col += MI_BLOCK_SIZE) {
+ const int r = mi_row >> MI_BLOCK_SIZE_LOG2;
+ const int c = mi_col >> MI_BLOCK_SIZE_LOG2;
+ LOOP_FILTER_MASK lfm;
+ int plane;
+
+ sync_read(lf_sync, r, c);
+
+ vp9_setup_dst_planes(planes, frame_buffer, mi_row, mi_col);
+
+ // TODO(JBB): Make setup_mask work for non 420.
+ vp9_setup_mask(cm, mi_row, mi_col, mi + mi_col, cm->mi_stride,
+ &lfm);
+
+ vp9_filter_block_plane_ss00(cm, &planes[0], mi_row, &lfm);
+ for (plane = 1; plane < num_planes; ++plane) {
+ switch (path) {
+ case LF_PATH_420:
+ vp9_filter_block_plane_ss11(cm, &planes[plane], mi_row, &lfm);
+ break;
+ case LF_PATH_444:
+ vp9_filter_block_plane_ss00(cm, &planes[plane], mi_row, &lfm);
+ break;
+ case LF_PATH_SLOW:
+ vp9_filter_block_plane_non420(cm, &planes[plane], mi + mi_col,
+ mi_row, mi_col);
+ break;
+ }
+ }
+
+ sync_write(lf_sync, r, c, sb_cols);
+ }
+ }
+}
+
+// Row-based multi-threaded loopfilter hook
+static int loop_filter_row_worker(VP9LfSync *const lf_sync,
+ LFWorkerData *const lf_data) {
+ thread_loop_filter_rows(lf_data->frame_buffer, lf_data->cm, lf_data->planes,
+ lf_data->start, lf_data->stop, lf_data->y_only,
+ lf_sync);
+ return 1;
+}
+
+static void loop_filter_rows_mt(YV12_BUFFER_CONFIG *frame,
+ VP9_COMMON *cm,
+ struct macroblockd_plane planes[MAX_MB_PLANE],
+ int start, int stop, int y_only,
+ VP9Worker *workers, int nworkers,
+ VP9LfSync *lf_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;
+ // Decoder may allocate more threads than number of tiles based on user's
+ // input.
+ const int tile_cols = 1 << cm->log2_tile_cols;
+ const int num_workers = MIN(nworkers, tile_cols);
+ int i;
+
+ if (!lf_sync->sync_range || sb_rows != lf_sync->rows ||
+ 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);
+ }
+
+ // 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);
+
+ // 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 = start + i * MI_BLOCK_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]);
+ }
+}
+
+void vp9_loop_filter_frame_mt(YV12_BUFFER_CONFIG *frame,
+ VP9_COMMON *cm,
+ struct macroblockd_plane planes[MAX_MB_PLANE],
+ int frame_filter_level,
+ int y_only, int partial_frame,
+ VP9Worker *workers, int num_workers,
+ VP9LfSync *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 = MAX(cm->mi_rows / 8, 8);
+ }
+ end_mi_row = start_mi_row + mi_rows_to_filter;
+ vp9_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 vp9_loop_filter_alloc(VP9LfSync *lf_sync, VP9_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_,
+ vpx_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_,
+ vpx_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,
+ vpx_malloc(num_workers * sizeof(*lf_sync->lfdata)));
+ lf_sync->num_workers = num_workers;
+
+ CHECK_MEM_ERROR(cm, lf_sync->cur_sb_col,
+ vpx_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 vp9_loop_filter_dealloc(VP9LfSync *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]);
+ }
+ vpx_free(lf_sync->mutex_);
+ }
+ if (lf_sync->cond_ != NULL) {
+ for (i = 0; i < lf_sync->rows; ++i) {
+ pthread_cond_destroy(&lf_sync->cond_[i]);
+ }
+ vpx_free(lf_sync->cond_);
+ }
+#endif // CONFIG_MULTITHREAD
+ vpx_free(lf_sync->lfdata);
+ vpx_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.
+ vp9_zero(*lf_sync);
+ }
+}
+
+// Accumulate frame counts.
+void vp9_accumulate_frame_counts(VP9_COMMON *cm, FRAME_COUNTS *counts,
+ int is_dec) {
+ int i, j, k, l, m;
+
+ for (i = 0; i < BLOCK_SIZE_GROUPS; i++)
+ for (j = 0; j < INTRA_MODES; j++)
+ cm->counts.y_mode[i][j] += counts->y_mode[i][j];
+
+ for (i = 0; i < INTRA_MODES; i++)
+ for (j = 0; j < INTRA_MODES; j++)
+ cm->counts.uv_mode[i][j] += counts->uv_mode[i][j];
+
+ for (i = 0; i < PARTITION_CONTEXTS; i++)
+ for (j = 0; j < PARTITION_TYPES; j++)
+ cm->counts.partition[i][j] += counts->partition[i][j];
+
+ if (is_dec) {
+ int n;
+ for (i = 0; i < TX_SIZES; i++)
+ for (j = 0; j < PLANE_TYPES; j++)
+ for (k = 0; k < REF_TYPES; k++)
+ for (l = 0; l < COEF_BANDS; l++)
+ for (m = 0; m < COEFF_CONTEXTS; m++) {
+ cm->counts.eob_branch[i][j][k][l][m] +=
+ counts->eob_branch[i][j][k][l][m];
+ for (n = 0; n < UNCONSTRAINED_NODES + 1; n++)
+ cm->counts.coef[i][j][k][l][m][n] +=
+ counts->coef[i][j][k][l][m][n];
+ }
+ } else {
+ for (i = 0; i < TX_SIZES; i++)
+ for (j = 0; j < PLANE_TYPES; j++)
+ for (k = 0; k < REF_TYPES; k++)
+ for (l = 0; l < COEF_BANDS; l++)
+ for (m = 0; m < COEFF_CONTEXTS; m++)
+ cm->counts.eob_branch[i][j][k][l][m] +=
+ counts->eob_branch[i][j][k][l][m];
+ // In the encoder, cm->counts.coef is only updated at frame
+ // level, so not need to accumulate it here.
+ // for (n = 0; n < UNCONSTRAINED_NODES + 1; n++)
+ // cm->counts.coef[i][j][k][l][m][n] +=
+ // counts->coef[i][j][k][l][m][n];
+ }
+
+ for (i = 0; i < SWITCHABLE_FILTER_CONTEXTS; i++)
+ for (j = 0; j < SWITCHABLE_FILTERS; j++)
+ cm->counts.switchable_interp[i][j] += counts->switchable_interp[i][j];
+
+ for (i = 0; i < INTER_MODE_CONTEXTS; i++)
+ for (j = 0; j < INTER_MODES; j++)
+ cm->counts.inter_mode[i][j] += counts->inter_mode[i][j];
+
+ for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
+ for (j = 0; j < 2; j++)
+ cm->counts.intra_inter[i][j] += counts->intra_inter[i][j];
+
+ for (i = 0; i < COMP_INTER_CONTEXTS; i++)
+ for (j = 0; j < 2; j++)
+ cm->counts.comp_inter[i][j] += counts->comp_inter[i][j];
+
+ for (i = 0; i < REF_CONTEXTS; i++)
+ for (j = 0; j < 2; j++)
+ for (k = 0; k < 2; k++)
+ cm->counts.single_ref[i][j][k] += counts->single_ref[i][j][k];
+
+ for (i = 0; i < REF_CONTEXTS; i++)
+ for (j = 0; j < 2; j++)
+ cm->counts.comp_ref[i][j] += counts->comp_ref[i][j];
+
+ for (i = 0; i < TX_SIZE_CONTEXTS; i++) {
+ for (j = 0; j < TX_SIZES; j++)
+ cm->counts.tx.p32x32[i][j] += counts->tx.p32x32[i][j];
+
+ for (j = 0; j < TX_SIZES - 1; j++)
+ cm->counts.tx.p16x16[i][j] += counts->tx.p16x16[i][j];
+
+ for (j = 0; j < TX_SIZES - 2; j++)
+ cm->counts.tx.p8x8[i][j] += counts->tx.p8x8[i][j];
+ }
+
+ for (i = 0; i < TX_SIZES; i++)
+ cm->counts.tx.tx_totals[i] += counts->tx.tx_totals[i];
+
+ for (i = 0; i < SKIP_CONTEXTS; i++)
+ for (j = 0; j < 2; j++)
+ cm->counts.skip[i][j] += counts->skip[i][j];
+
+ for (i = 0; i < MV_JOINTS; i++)
+ cm->counts.mv.joints[i] += counts->mv.joints[i];
+
+ for (k = 0; k < 2; k++) {
+ nmv_component_counts *comps = &cm->counts.mv.comps[k];
+ nmv_component_counts *comps_t = &counts->mv.comps[k];
+
+ for (i = 0; i < 2; i++) {
+ comps->sign[i] += comps_t->sign[i];
+ comps->class0_hp[i] += comps_t->class0_hp[i];
+ comps->hp[i] += comps_t->hp[i];
+ }
+
+ for (i = 0; i < MV_CLASSES; i++)
+ comps->classes[i] += comps_t->classes[i];
+
+ for (i = 0; i < CLASS0_SIZE; i++) {
+ comps->class0[i] += comps_t->class0[i];
+ for (j = 0; j < MV_FP_SIZE; j++)
+ comps->class0_fp[i][j] += comps_t->class0_fp[i][j];
+ }
+
+ for (i = 0; i < MV_OFFSET_BITS; i++)
+ for (j = 0; j < 2; j++)
+ comps->bits[i][j] += comps_t->bits[i][j];
+
+ for (i = 0; i < MV_FP_SIZE; i++)
+ comps->fp[i] += comps_t->fp[i];
+ }
+}
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