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/*
* 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];
}
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