9dc5928eb2
Renamed the WEBRTC_THIRD_PARTY_H264 macro to WEBRTC_USE_H264 to match flag name. The idea is to be able to turn off H264 from chromium with this function because... 1) The Chromium trybots will soon use this flag, we want to temporarily disable H264 from chromium even if flag is set in case something is broken. That way when we are ready to flip the switch the trybots will run our test code then and not after it is already enabled. 2) If feature is launched and we discover major problems we can easily disable H264 and merge with beta/stable. 3) Or, if feature is behind a *runtime* flag, this is how we would control if it is used or not. The idea is to call DisableRtcUseH264 in chromium's PeerConnectionDependencyFactory. BUG=chromium:500605, chromium:468365 NOTRY=True NOPRESUBMIT=True Review URL: https://codereview.webrtc.org/1657273002 Cr-Commit-Position: refs/heads/master@{#11474}
108 lines
2.7 KiB
C++
108 lines
2.7 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_USE_H264)
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#include "webrtc/modules/video_coding/codecs/h264/h264_decoder_impl.h"
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#include "webrtc/modules/video_coding/codecs/h264/h264_encoder_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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namespace {
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#if defined(WEBRTC_USE_H264)
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bool g_rtc_use_h264 = true;
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#endif
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} // namespace
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void DisableRtcUseH264() {
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#if defined(WEBRTC_USE_H264)
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g_rtc_use_h264 = false;
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#endif
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}
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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_USE_H264)
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return g_rtc_use_h264;
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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_USE_H264)
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RTC_CHECK(g_rtc_use_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_USE_H264)
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RTC_CHECK(g_rtc_use_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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