Files
platform-external-webrtc/webrtc/common_audio/audio_ring_buffer.cc
henrikg 91d6edef35 Add RTC_ prefix to (D)CHECKs and related macros.
We must remove dependency on Chromium, i.e. we can't use Chromium's base/logging.h. That means we need to define these macros in WebRTC also when doing Chromium builds. And this causes redefinition.

Alternative solutions:
* Check if we already have defined e.g. CHECK, and don't define them in that case. This makes us depend on include order in Chromium, which is not acceptable.
* Don't allow using the macros in WebRTC headers. Error prone since if someone adds it there by mistake it may compile fine, but later break if a header in added or order is changed in Chromium. That will be confusing and hard to enforce.
* Ensure that headers that are included by an embedder don't include our macros. This would require some heavy refactoring to be maintainable and enforcable.
* Changes in Chromium for this is obviously not an option.

BUG=chromium:468375
NOTRY=true

Review URL: https://codereview.webrtc.org/1335923002

Cr-Commit-Position: refs/heads/master@{#9964}
2015-09-17 07:24:51 +00:00

76 lines
2.3 KiB
C++

/*
* Copyright (c) 2015 The WebRTC 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 "webrtc/common_audio/audio_ring_buffer.h"
#include "webrtc/base/checks.h"
#include "webrtc/common_audio/ring_buffer.h"
// This is a simple multi-channel wrapper over the ring_buffer.h C interface.
namespace webrtc {
AudioRingBuffer::AudioRingBuffer(size_t channels, size_t max_frames) {
buffers_.reserve(channels);
for (size_t i = 0; i < channels; ++i)
buffers_.push_back(WebRtc_CreateBuffer(max_frames, sizeof(float)));
}
AudioRingBuffer::~AudioRingBuffer() {
for (auto buf : buffers_)
WebRtc_FreeBuffer(buf);
}
void AudioRingBuffer::Write(const float* const* data, size_t channels,
size_t frames) {
RTC_DCHECK_EQ(buffers_.size(), channels);
for (size_t i = 0; i < channels; ++i) {
const size_t written = WebRtc_WriteBuffer(buffers_[i], data[i], frames);
RTC_CHECK_EQ(written, frames);
}
}
void AudioRingBuffer::Read(float* const* data, size_t channels, size_t frames) {
RTC_DCHECK_EQ(buffers_.size(), channels);
for (size_t i = 0; i < channels; ++i) {
const size_t read =
WebRtc_ReadBuffer(buffers_[i], nullptr, data[i], frames);
RTC_CHECK_EQ(read, frames);
}
}
size_t AudioRingBuffer::ReadFramesAvailable() const {
// All buffers have the same amount available.
return WebRtc_available_read(buffers_[0]);
}
size_t AudioRingBuffer::WriteFramesAvailable() const {
// All buffers have the same amount available.
return WebRtc_available_write(buffers_[0]);
}
void AudioRingBuffer::MoveReadPositionForward(size_t frames) {
for (auto buf : buffers_) {
const size_t moved =
static_cast<size_t>(WebRtc_MoveReadPtr(buf, static_cast<int>(frames)));
RTC_CHECK_EQ(moved, frames);
}
}
void AudioRingBuffer::MoveReadPositionBackward(size_t frames) {
for (auto buf : buffers_) {
const size_t moved = static_cast<size_t>(
-WebRtc_MoveReadPtr(buf, -static_cast<int>(frames)));
RTC_CHECK_EQ(moved, frames);
}
}
} // namespace webrtc