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Unified Diff: media/base/android/access_unit_queue.cc

Issue 2276343005: Delete MediaCodecPlayer, it's time! (Closed)
Patch Set: Created 4 years, 4 months ago
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Index: media/base/android/access_unit_queue.cc
diff --git a/media/base/android/access_unit_queue.cc b/media/base/android/access_unit_queue.cc
deleted file mode 100644
index b98c89b11a16d5448345a608f47eedad21c6e49b..0000000000000000000000000000000000000000
--- a/media/base/android/access_unit_queue.cc
+++ /dev/null
@@ -1,211 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "media/base/android/access_unit_queue.h"
-
-#include "base/logging.h"
-#include "base/stl_util.h"
-#include "media/base/demuxer_stream.h"
-
-namespace media {
-
-namespace {
-// Amount of history chunks we keep by default. The zero size means we do not
-// keep chunks before the current one and the history is limited by the size
-// of one chunk.
-const int kDefaultHistoryChunksAmount = 0;
-}
-
-AccessUnitQueue::AccessUnitQueue()
- : index_in_chunk_(0),
- history_chunks_amount_(kDefaultHistoryChunksAmount),
- has_eos_(false) {
- current_chunk_ = chunks_.end();
-}
-
-AccessUnitQueue::~AccessUnitQueue() {
- base::STLDeleteContainerPointers(chunks_.begin(), chunks_.end());
-}
-
-void AccessUnitQueue::PushBack(const DemuxerData& data) {
- // Media thread
- DCHECK(!data.access_units.empty());
-
-#if DCHECK_IS_ON()
- // If there is an AU with |kConfigChanged| status, it must be the last
- // AU in the chunk and the data should have exactly one corresponding
- // DemuxerConfigs.
- for (size_t i = 0; i < data.access_units.size(); ++i) {
- const AccessUnit& unit = data.access_units[i];
-
- // EOS must be the last unit in the chunk.
- if (unit.is_end_of_stream) {
- DCHECK(i == data.access_units.size() - 1);
- }
-
- // kConfigChanged must be the last unit in the chunk.
- if (unit.status == DemuxerStream::kConfigChanged) {
- DCHECK(i == data.access_units.size() - 1);
- DCHECK(data.demuxer_configs.size() == 1);
- }
-
- if (unit.status == DemuxerStream::kAborted) {
- DVLOG(1) << "AccessUnitQueue::" << __FUNCTION__ << " kAborted";
- }
- }
-#endif
-
- // Create the next chunk and copy data to it.
- DemuxerData* chunk = new DemuxerData(data);
-
- // EOS flag can only be in the last access unit.
- bool has_eos = chunk->access_units.back().is_end_of_stream;
-
- // Append this chunk to the queue.
- base::AutoLock lock(lock_);
-
- // Ignore the input after we have received EOS.
- if (has_eos_) {
- delete chunk;
- return;
- }
-
- bool was_empty = (current_chunk_ == chunks_.end());
-
- // The container |chunks_| will own the chunk.
- chunks_.push_back(chunk);
-
- // Position the current chunk.
- if (was_empty) {
- current_chunk_ = --chunks_.end();
- index_in_chunk_ = 0;
- }
-
- // We expect that the chunk containing EOS is the last chunk.
- DCHECK(!has_eos_);
- has_eos_ = has_eos;
-}
-
-void AccessUnitQueue::Advance() {
- // Decoder thread
- base::AutoLock lock(lock_);
-
- if (current_chunk_ == chunks_.end())
- return;
-
- ++index_in_chunk_;
- if (index_in_chunk_ < (*current_chunk_)->access_units.size())
- return;
-
- index_in_chunk_ = 0;
- ++current_chunk_;
-
- // Keep only |history_chunks_amount_| before the current one.
- // std::distance() and std::advance() do not work efficiently with std::list,
- // but the history_size should be small (default is 0).
- size_t num_consumed_chunks = std::distance(chunks_.begin(), current_chunk_);
- if (num_consumed_chunks > history_chunks_amount_) {
- DataChunkQueue::iterator first_to_keep = chunks_.begin();
- std::advance(first_to_keep, num_consumed_chunks - history_chunks_amount_);
- base::STLDeleteContainerPointers(chunks_.begin(), first_to_keep);
- chunks_.erase(chunks_.begin(), first_to_keep);
- }
-}
-
-void AccessUnitQueue::Flush() {
- // Media thread
- base::AutoLock lock(lock_);
-
- base::STLDeleteContainerPointers(chunks_.begin(), chunks_.end());
- chunks_.clear();
-
- current_chunk_ = chunks_.end();
- index_in_chunk_ = 0;
- has_eos_ = false;
-}
-
-bool AccessUnitQueue::RewindToLastKeyFrame() {
- // Media thread
- base::AutoLock lock(lock_);
-
- // Search for the key frame backwards. Start with the current AU.
-
- // Start with current chunk.
- if (current_chunk_ != chunks_.end()) {
- for (int i = (int)index_in_chunk_; i >= 0; --i) {
- if ((*current_chunk_)->access_units[i].is_key_frame) {
- index_in_chunk_ = i;
- return true;
- }
- }
- }
-
- // Position reverse iterator before the current chunk.
- DataChunkQueue::reverse_iterator rchunk(current_chunk_);
-
- for (; rchunk != chunks_.rend(); ++rchunk) {
- int i = (int)(*rchunk)->access_units.size() - 1;
- for (; i >= 0; --i) {
- if ((*rchunk)->access_units[i].is_key_frame) {
- index_in_chunk_ = i;
- current_chunk_ = --rchunk.base();
- return true;
- }
- }
- }
-
- return false;
-}
-
-AccessUnitQueue::Info AccessUnitQueue::GetInfo() const {
- // Media thread, Decoder thread
-
- Info info;
- base::AutoLock lock(lock_);
-
- GetUnconsumedAccessUnitLength(&info.length, &info.data_length);
-
- info.has_eos = has_eos_;
- info.front_unit = nullptr;
- info.configs = nullptr;
-
- if (info.length > 0) {
- DCHECK(current_chunk_ != chunks_.end());
- DCHECK(index_in_chunk_ < (*current_chunk_)->access_units.size());
- info.front_unit = &(*current_chunk_)->access_units[index_in_chunk_];
-
- if (info.front_unit->status == DemuxerStream::kConfigChanged) {
- DCHECK((*current_chunk_)->demuxer_configs.size() == 1);
- info.configs = &(*current_chunk_)->demuxer_configs[0];
- }
- }
- return info;
-}
-
-void AccessUnitQueue::SetHistorySizeForTesting(size_t history_chunks_amount) {
- history_chunks_amount_ = history_chunks_amount;
-}
-
-void AccessUnitQueue::GetUnconsumedAccessUnitLength(int* total_length,
- int* data_length) const {
- *total_length = *data_length = 0;
-
- DataChunkQueue::const_iterator chunk;
- for (chunk = current_chunk_; chunk != chunks_.end(); ++chunk) {
- size_t chunk_size = (*chunk)->access_units.size();
- *total_length += chunk_size;
- *data_length += chunk_size;
-
- // Do not count configuration changes for |data_length|.
- if (!(*chunk)->demuxer_configs.empty()) {
- DCHECK((*chunk)->demuxer_configs.size() == 1);
- --(*data_length);
- }
- }
-
- *total_length -= index_in_chunk_;
- *data_length -= index_in_chunk_;
-}
-
-} // namespace media
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