bab934bffe
It works on all platforms except Android and iOS (FFmpeg limitation). Implemented behind compile time flags, off by default. The plan is to have it enabled in Chrome (see bug), but not in Chromium/webrtc by default. Flags to turn it on: - rtc_use_h264 = true - ffmpeg_branding = "Chrome" (or other brand that includes H.264 decoder) Tests using H264: - video_loopback --codec=H264 - screenshare_loopback --codec=H264 - video_engine_tests (EndToEndTest.SendsAndReceivesH264) NOTRY=True BUG=500605, 468365 BUG=https://bugs.chromium.org/p/webrtc/issues/detail?id=5424 Review URL: https://codereview.webrtc.org/1306813009 Cr-Commit-Position: refs/heads/master@{#11390}
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
/*
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* Copyright (c) 2015 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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*/
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#include "webrtc/modules/video_coding/codecs/h264/include/h264.h"
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#if defined(WEBRTC_THIRD_PARTY_H264)
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#include "webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.h"
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#include "webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h"
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#endif
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#if defined(WEBRTC_IOS)
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#include "webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_decoder.h"
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#include "webrtc/modules/video_coding/codecs/h264/h264_video_toolbox_encoder.h"
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#endif
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#include "webrtc/base/checks.h"
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#include "webrtc/base/logging.h"
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namespace webrtc {
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// We need this file to be C++ only so it will compile properly for all
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// platforms. In order to write ObjC specific implementations we use private
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// externs. This function is defined in h264.mm.
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#if defined(WEBRTC_IOS)
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extern bool IsH264CodecSupportedObjC();
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#endif
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// If any H.264 codec is supported (iOS HW or OpenH264/FFmpeg).
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bool IsH264CodecSupported() {
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#if defined(WEBRTC_IOS)
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if (IsH264CodecSupportedObjC()) {
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return true;
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}
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#endif
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#if defined(WEBRTC_THIRD_PARTY_H264)
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return true;
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#else
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return false;
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#endif
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}
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H264Encoder* H264Encoder::Create() {
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RTC_DCHECK(H264Encoder::IsSupported());
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#if defined(WEBRTC_IOS) && defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
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if (IsH264CodecSupportedObjC()) {
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LOG(LS_INFO) << "Creating H264VideoToolboxEncoder.";
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return new H264VideoToolboxEncoder();
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}
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#endif
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#if defined(WEBRTC_THIRD_PARTY_H264)
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LOG(LS_INFO) << "Creating H264EncoderImpl.";
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return new H264EncoderImpl();
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#else
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RTC_NOTREACHED();
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return nullptr;
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#endif
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}
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bool H264Encoder::IsSupported() {
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return IsH264CodecSupported();
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}
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H264Decoder* H264Decoder::Create() {
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RTC_DCHECK(H264Decoder::IsSupported());
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#if defined(WEBRTC_IOS) && defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
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if (IsH264CodecSupportedObjC()) {
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LOG(LS_INFO) << "Creating H264VideoToolboxDecoder.";
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return new H264VideoToolboxDecoder();
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}
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#endif
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#if defined(WEBRTC_THIRD_PARTY_H264)
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LOG(LS_INFO) << "Creating H264DecoderImpl.";
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return new H264DecoderImpl();
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#else
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RTC_NOTREACHED();
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return nullptr;
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#endif
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}
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bool H264Decoder::IsSupported() {
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return IsH264CodecSupported();
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}
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} // namespace webrtc
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