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/*
* Copyright (c) 2017 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 "media/engine/multiplex_codec_factory.h"
#include <map>
#include <string>
#include <utility>
#include "absl/strings/match.h"
#include "api/video_codecs/sdp_video_format.h"
#include "media/base/codec.h"
#include "media/base/media_constants.h"
#include "modules/video_coding/codecs/multiplex/include/multiplex_decoder_adapter.h"
#include "modules/video_coding/codecs/multiplex/include/multiplex_encoder_adapter.h"
#include "rtc_base/logging.h"
namespace {
bool IsMultiplexCodec(const cricket::VideoCodec& codec) {
return absl::EqualsIgnoreCase(codec.name.c_str(),
cricket::kMultiplexCodecName);
}
} // anonymous namespace
namespace webrtc {
constexpr const char* kMultiplexAssociatedCodecName = cricket::kVp9CodecName;
MultiplexEncoderFactory::MultiplexEncoderFactory(
std::unique_ptr<VideoEncoderFactory> factory,
bool supports_augmenting_data)
: factory_(std::move(factory)),
supports_augmenting_data_(supports_augmenting_data) {}
std::vector<SdpVideoFormat> MultiplexEncoderFactory::GetSupportedFormats()
const {
std::vector<SdpVideoFormat> formats = factory_->GetSupportedFormats();
for (const auto& format : formats) {
if (absl::EqualsIgnoreCase(format.name, kMultiplexAssociatedCodecName)) {
SdpVideoFormat multiplex_format = format;
multiplex_format.parameters[cricket::kCodecParamAssociatedCodecName] =
format.name;
multiplex_format.name = cricket::kMultiplexCodecName;
formats.push_back(multiplex_format);
break;
}
}
return formats;
}
std::unique_ptr<VideoEncoder> MultiplexEncoderFactory::CreateVideoEncoder(
const SdpVideoFormat& format) {
if (!IsMultiplexCodec(cricket::CreateVideoCodec(format)))
return factory_->CreateVideoEncoder(format);
const auto& it =
format.parameters.find(cricket::kCodecParamAssociatedCodecName);
if (it == format.parameters.end()) {
RTC_LOG(LS_ERROR) << "No assicated codec for multiplex.";
return nullptr;
}
SdpVideoFormat associated_format = format;
associated_format.name = it->second;
return std::unique_ptr<VideoEncoder>(new MultiplexEncoderAdapter(
factory_.get(), associated_format, supports_augmenting_data_));
}
MultiplexDecoderFactory::MultiplexDecoderFactory(
std::unique_ptr<VideoDecoderFactory> factory,
bool supports_augmenting_data)
: factory_(std::move(factory)),
supports_augmenting_data_(supports_augmenting_data) {}
std::vector<SdpVideoFormat> MultiplexDecoderFactory::GetSupportedFormats()
const {
std::vector<SdpVideoFormat> formats = factory_->GetSupportedFormats();
std::vector<SdpVideoFormat> augmented_formats = formats;
for (const auto& format : formats) {
if (absl::EqualsIgnoreCase(format.name, kMultiplexAssociatedCodecName)) {
SdpVideoFormat multiplex_format = format;
multiplex_format.parameters[cricket::kCodecParamAssociatedCodecName] =
format.name;
multiplex_format.name = cricket::kMultiplexCodecName;
augmented_formats.push_back(multiplex_format);
}
}
return augmented_formats;
}
std::unique_ptr<VideoDecoder> MultiplexDecoderFactory::CreateVideoDecoder(
const SdpVideoFormat& format) {
if (!IsMultiplexCodec(cricket::CreateVideoCodec(format)))
return factory_->CreateVideoDecoder(format);
const auto& it =
format.parameters.find(cricket::kCodecParamAssociatedCodecName);
if (it == format.parameters.end()) {
RTC_LOG(LS_ERROR) << "No assicated codec for multiplex.";
return nullptr;
}
SdpVideoFormat associated_format = format;
associated_format.name = it->second;
return std::unique_ptr<VideoDecoder>(new MultiplexDecoderAdapter(
factory_.get(), associated_format, supports_augmenting_data_));
}
} // namespace webrtc
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