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83d5e86163
Some codecs don't support directly creating simulcast layers with non-optimal parameters. This proxy will detect this and create multiple encoders then, one for each layer as a fallback. Bug: webrtc:10069 Change-Id: I4bcafcfdd68d9ed466e2fafe564db849de6ed4f6 Reviewed-on: https://webrtc-review.googlesource.com/c/119264 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Florent Castelli <orphis@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26373}
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "api/video_codecs/builtin_video_encoder_factory.h"
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#include <vector>
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#include "absl/memory/memory.h"
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#include "absl/strings/match.h"
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#include "api/video_codecs/sdp_video_format.h"
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#include "api/video_codecs/video_encoder.h"
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#include "media/base/codec.h"
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#include "media/base/media_constants.h"
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#include "media/engine/encoder_simulcast_proxy.h"
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#include "media/engine/internal_encoder_factory.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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namespace {
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bool IsFormatSupported(const std::vector<SdpVideoFormat>& supported_formats,
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const SdpVideoFormat& format) {
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for (const SdpVideoFormat& supported_format : supported_formats) {
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if (cricket::IsSameCodec(format.name, format.parameters,
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supported_format.name,
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supported_format.parameters)) {
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return true;
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}
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}
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return false;
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}
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// This class wraps the internal factory and adds simulcast.
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class BuiltinVideoEncoderFactory : public VideoEncoderFactory {
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public:
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BuiltinVideoEncoderFactory()
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: internal_encoder_factory_(new InternalEncoderFactory()) {}
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VideoEncoderFactory::CodecInfo QueryVideoEncoder(
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const SdpVideoFormat& format) const override {
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// Format must be one of the internal formats.
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RTC_DCHECK(IsFormatSupported(
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internal_encoder_factory_->GetSupportedFormats(), format));
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VideoEncoderFactory::CodecInfo info;
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info.has_internal_source = false;
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info.is_hardware_accelerated = false;
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return info;
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}
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std::unique_ptr<VideoEncoder> CreateVideoEncoder(
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const SdpVideoFormat& format) override {
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// Try creating internal encoder.
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std::unique_ptr<VideoEncoder> internal_encoder;
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if (IsFormatSupported(internal_encoder_factory_->GetSupportedFormats(),
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format)) {
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internal_encoder = absl::make_unique<EncoderSimulcastProxy>(
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internal_encoder_factory_.get(), format);
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}
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return internal_encoder;
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}
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std::vector<SdpVideoFormat> GetSupportedFormats() const override {
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return internal_encoder_factory_->GetSupportedFormats();
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}
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private:
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const std::unique_ptr<VideoEncoderFactory> internal_encoder_factory_;
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};
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} // namespace
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std::unique_ptr<VideoEncoderFactory> CreateBuiltinVideoEncoderFactory() {
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return absl::make_unique<BuiltinVideoEncoderFactory>();
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}
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} // namespace webrtc
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