1 files changed, 261 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/ethread.c b/third_party/aom/av1/encoder/ethread.c
new file mode 100644
index 0000000000..e8ac30bb52
--- /dev/null
+++ b/third_party/aom/av1/encoder/ethread.c
@@ -0,0 +1,261 @@
+/*
+ * 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 "av1/encoder/encodeframe.h"
+#include "av1/encoder/encoder.h"
+#include "av1/encoder/ethread.h"
+#include "aom_dsp/aom_dsp_common.h"
+
+static void accumulate_rd_opt(ThreadData *td, ThreadData *td_t) {
+  for (int i = 0; i < REFERENCE_MODES; i++)
+    td->rd_counts.comp_pred_diff[i] += td_t->rd_counts.comp_pred_diff[i];
+
+  for (int i = 0; i < REF_FRAMES; i++)
+    td->rd_counts.global_motion_used[i] +=
+        td_t->rd_counts.global_motion_used[i];
+
+  td->rd_counts.compound_ref_used_flag |=
+      td_t->rd_counts.compound_ref_used_flag;
+  td->rd_counts.skip_mode_used_flag |= td_t->rd_counts.skip_mode_used_flag;
+}
+
+static int enc_worker_hook(void *arg1, void *unused) {
+  EncWorkerData *const thread_data = (EncWorkerData *)arg1;
+  AV1_COMP *const cpi = thread_data->cpi;
+  const AV1_COMMON *const cm = &cpi->common;
+  const int tile_cols = cm->tile_cols;
+  const int tile_rows = cm->tile_rows;
+  int t;
+
+  (void)unused;
+
+  for (t = thread_data->start; t < tile_rows * tile_cols;
+       t += cpi->num_workers) {
+    int tile_row = t / tile_cols;
+    int tile_col = t % tile_cols;
+
+    av1_encode_tile(cpi, thread_data->td, tile_row, tile_col);
+  }
+
+  return 1;
+}
+
+static void create_enc_workers(AV1_COMP *cpi, int num_workers) {
+  AV1_COMMON *const cm = &cpi->common;
+  const AVxWorkerInterface *const winterface = aom_get_worker_interface();
+
+  CHECK_MEM_ERROR(cm, cpi->workers,
+                  aom_malloc(num_workers * sizeof(*cpi->workers)));
+
+  CHECK_MEM_ERROR(cm, cpi->tile_thr_data,
+                  aom_calloc(num_workers, sizeof(*cpi->tile_thr_data)));
+
+  for (int i = 0; i < num_workers; i++) {
+    AVxWorker *const worker = &cpi->workers[i];
+    EncWorkerData *const thread_data = &cpi->tile_thr_data[i];
+
+    ++cpi->num_workers;
+    winterface->init(worker);
+
+    thread_data->cpi = cpi;
+
+    if (i < num_workers - 1) {
+      // Allocate thread data.
+      CHECK_MEM_ERROR(cm, thread_data->td,
+                      aom_memalign(32, sizeof(*thread_data->td)));
+      av1_zero(*thread_data->td);
+
+      // Set up pc_tree.
+      thread_data->td->pc_tree = NULL;
+      av1_setup_pc_tree(cm, thread_data->td);
+
+      CHECK_MEM_ERROR(cm, thread_data->td->above_pred_buf,
+                      (uint8_t *)aom_memalign(
+                          16, MAX_MB_PLANE * MAX_SB_SQUARE *
+                                  sizeof(*thread_data->td->above_pred_buf)));
+      CHECK_MEM_ERROR(cm, thread_data->td->left_pred_buf,
+                      (uint8_t *)aom_memalign(
+                          16, MAX_MB_PLANE * MAX_SB_SQUARE *
+                                  sizeof(*thread_data->td->left_pred_buf)));
+
+      CHECK_MEM_ERROR(
+          cm, thread_data->td->wsrc_buf,
+          (int32_t *)aom_memalign(
+              16, MAX_SB_SQUARE * sizeof(*thread_data->td->wsrc_buf)));
+
+      for (int x = 0; x < 2; x++)
+        for (int y = 0; y < 2; y++)
+          CHECK_MEM_ERROR(
+              cm, thread_data->td->hash_value_buffer[x][y],
+              (uint32_t *)aom_malloc(
+                  AOM_BUFFER_SIZE_FOR_BLOCK_HASH *
+                  sizeof(*thread_data->td->hash_value_buffer[0][0])));
+
+      CHECK_MEM_ERROR(
+          cm, thread_data->td->mask_buf,
+          (int32_t *)aom_memalign(
+              16, MAX_SB_SQUARE * sizeof(*thread_data->td->mask_buf)));
+      // Allocate frame counters in thread data.
+      CHECK_MEM_ERROR(cm, thread_data->td->counts,
+                      aom_calloc(1, sizeof(*thread_data->td->counts)));
+
+      // Allocate buffers used by palette coding mode.
+      CHECK_MEM_ERROR(
+          cm, thread_data->td->palette_buffer,
+          aom_memalign(16, sizeof(*thread_data->td->palette_buffer)));
+
+      CHECK_MEM_ERROR(
+          cm, thread_data->td->tmp_conv_dst,
+          aom_memalign(32, MAX_SB_SIZE * MAX_SB_SIZE *
+                               sizeof(*thread_data->td->tmp_conv_dst)));
+      for (int j = 0; j < 2; ++j) {
+        CHECK_MEM_ERROR(
+            cm, thread_data->td->tmp_obmc_bufs[j],
+            aom_memalign(16, 2 * MAX_MB_PLANE * MAX_SB_SQUARE *
+                                 sizeof(*thread_data->td->tmp_obmc_bufs[j])));
+      }
+
+      // Create threads
+      if (!winterface->reset(worker))
+        aom_internal_error(&cm->error, AOM_CODEC_ERROR,
+                           "Tile encoder thread creation failed");
+    } else {
+      // Main thread acts as a worker and uses the thread data in cpi.
+      thread_data->td = &cpi->td;
+    }
+    winterface->sync(worker);
+  }
+}
+
+static void launch_enc_workers(AV1_COMP *cpi, int num_workers) {
+  const AVxWorkerInterface *const winterface = aom_get_worker_interface();
+  // Encode a frame
+  for (int i = 0; i < num_workers; i++) {
+    AVxWorker *const worker = &cpi->workers[i];
+    EncWorkerData *const thread_data = (EncWorkerData *)worker->data1;
+
+    // Set the starting tile for each thread.
+    thread_data->start = i;
+
+    if (i == cpi->num_workers - 1)
+      winterface->execute(worker);
+    else
+      winterface->launch(worker);
+  }
+}
+
+static void sync_enc_workers(AV1_COMP *cpi, int num_workers) {
+  const AVxWorkerInterface *const winterface = aom_get_worker_interface();
+
+  // Encoding ends.
+  for (int i = 0; i < num_workers; i++) {
+    AVxWorker *const worker = &cpi->workers[i];
+    winterface->sync(worker);
+  }
+}
+
+static void accumulate_counters_enc_workers(AV1_COMP *cpi, int num_workers) {
+  for (int i = 0; i < num_workers; i++) {
+    AVxWorker *const worker = &cpi->workers[i];
+    EncWorkerData *const thread_data = (EncWorkerData *)worker->data1;
+    cpi->intrabc_used |= thread_data->td->intrabc_used_this_tile;
+    // Accumulate counters.
+    if (i < cpi->num_workers - 1) {
+      av1_accumulate_frame_counts(&cpi->counts, thread_data->td->counts);
+      accumulate_rd_opt(&cpi->td, thread_data->td);
+      cpi->td.mb.txb_split_count += thread_data->td->mb.txb_split_count;
+    }
+  }
+}
+
+static void prepare_enc_workers(AV1_COMP *cpi, AVxWorkerHook hook,
+                                int num_workers) {
+  for (int i = 0; i < num_workers; i++) {
+    AVxWorker *const worker = &cpi->workers[i];
+    EncWorkerData *const thread_data = &cpi->tile_thr_data[i];
+
+    worker->hook = hook;
+    worker->data1 = thread_data;
+    worker->data2 = NULL;
+
+    // Before encoding a frame, copy the thread data from cpi.
+    if (thread_data->td != &cpi->td) {
+      thread_data->td->mb = cpi->td.mb;
+      thread_data->td->rd_counts = cpi->td.rd_counts;
+      thread_data->td->mb.above_pred_buf = thread_data->td->above_pred_buf;
+      thread_data->td->mb.left_pred_buf = thread_data->td->left_pred_buf;
+      thread_data->td->mb.wsrc_buf = thread_data->td->wsrc_buf;
+      for (int x = 0; x < 2; x++) {
+        for (int y = 0; y < 2; y++) {
+          memcpy(thread_data->td->hash_value_buffer[x][y],
+                 cpi->td.mb.hash_value_buffer[x][y],
+                 AOM_BUFFER_SIZE_FOR_BLOCK_HASH *
+                     sizeof(*thread_data->td->hash_value_buffer[0][0]));
+          thread_data->td->mb.hash_value_buffer[x][y] =
+              thread_data->td->hash_value_buffer[x][y];
+        }
+      }
+      thread_data->td->mb.mask_buf = thread_data->td->mask_buf;
+    }
+    if (thread_data->td->counts != &cpi->counts) {
+      memcpy(thread_data->td->counts, &cpi->counts, sizeof(cpi->counts));
+    }
+
+    if (i < num_workers - 1) {
+      thread_data->td->mb.palette_buffer = thread_data->td->palette_buffer;
+      thread_data->td->mb.tmp_conv_dst = thread_data->td->tmp_conv_dst;
+      for (int j = 0; j < 2; ++j) {
+        thread_data->td->mb.tmp_obmc_bufs[j] =
+            thread_data->td->tmp_obmc_bufs[j];
+      }
+
+      thread_data->td->mb.e_mbd.tmp_conv_dst = thread_data->td->mb.tmp_conv_dst;
+      for (int j = 0; j < 2; ++j) {
+        thread_data->td->mb.e_mbd.tmp_obmc_bufs[j] =
+            thread_data->td->mb.tmp_obmc_bufs[j];
+      }
+    }
+  }
+}
+
+void av1_encode_tiles_mt(AV1_COMP *cpi) {
+  AV1_COMMON *const cm = &cpi->common;
+  const int tile_cols = cm->tile_cols;
+  const int tile_rows = cm->tile_rows;
+  int num_workers = AOMMIN(cpi->oxcf.max_threads, tile_cols * tile_rows);
+
+  if (cpi->tile_data == NULL || cpi->allocated_tiles < tile_cols * tile_rows)
+    av1_alloc_tile_data(cpi);
+
+  av1_init_tile_data(cpi);
+  // Only run once to create threads and allocate thread data.
+  if (cpi->num_workers == 0) {
+    create_enc_workers(cpi, num_workers);
+  } else {
+    num_workers = AOMMIN(num_workers, cpi->num_workers);
+  }
+  prepare_enc_workers(cpi, enc_worker_hook, num_workers);
+  launch_enc_workers(cpi, num_workers);
+  sync_enc_workers(cpi, num_workers);
+  accumulate_counters_enc_workers(cpi, num_workers);
+}
+
+// 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,
+                                 const FRAME_COUNTS *counts) {
+  unsigned int *const acc = (unsigned int *)acc_counts;
+  const unsigned int *const cnt = (const unsigned int *)counts;
+
+  const unsigned int n_counts = sizeof(FRAME_COUNTS) / sizeof(unsigned int);
+
+  for (unsigned int i = 0; i < n_counts; i++) acc[i] += cnt[i];
+}