blob: 9b1f70cdd3a34a9b2375d3b2565022aecdca2951 [file] [log] [blame]
// Copyright (c) 2012 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/decoder_buffer_queue.h"
#include "base/logging.h"
#include "media/base/decoder_buffer.h"
#include "media/base/timestamp_constants.h"
namespace media {
DecoderBufferQueue::DecoderBufferQueue()
: earliest_valid_timestamp_(kNoTimestamp), data_size_(0) {}
DecoderBufferQueue::~DecoderBufferQueue() = default;
// TODO(dalecurtis): This whole class can be simplified significantly; there's
// no reason to track an in order queue, instead track min + max timestamps.
void DecoderBufferQueue::Push(scoped_refptr<DecoderBuffer> buffer) {
DCHECK(!buffer->end_of_stream());
queue_.push_back(buffer);
data_size_ += buffer->data_size();
// TODO(scherkus): FFmpeg returns some packets with no timestamp after
// seeking. Fix and turn this into CHECK(). See http://crbug.com/162192
if (buffer->timestamp() == kNoTimestamp) {
DVLOG(1) << "Buffer has no timestamp";
return;
}
if (earliest_valid_timestamp_ == kNoTimestamp) {
earliest_valid_timestamp_ = buffer->timestamp();
}
if (buffer->timestamp() < earliest_valid_timestamp_) {
DVLOG(2) << "Out of order timestamps: "
<< buffer->timestamp().InMicroseconds() << " vs. "
<< earliest_valid_timestamp_.InMicroseconds();
return;
}
earliest_valid_timestamp_ = buffer->timestamp();
in_order_queue_.emplace_back(std::move(buffer));
}
scoped_refptr<DecoderBuffer> DecoderBufferQueue::Pop() {
scoped_refptr<DecoderBuffer> buffer = std::move(queue_.front());
queue_.pop_front();
size_t buffer_data_size = buffer->data_size();
DCHECK_LE(buffer_data_size, data_size_);
data_size_ -= buffer_data_size;
if (!in_order_queue_.empty() && in_order_queue_.front() == buffer)
in_order_queue_.pop_front();
return buffer;
}
void DecoderBufferQueue::Clear() {
queue_.clear();
data_size_ = 0;
in_order_queue_.clear();
earliest_valid_timestamp_ = kNoTimestamp;
}
bool DecoderBufferQueue::IsEmpty() {
return queue_.empty();
}
base::TimeDelta DecoderBufferQueue::Duration() {
if (in_order_queue_.size() < 2)
return base::TimeDelta();
base::TimeDelta start = in_order_queue_.front()->timestamp();
base::TimeDelta end = in_order_queue_.back()->timestamp();
return end - start;
}
} // namespace media