3f42fdf19f
This reverts commit 3babb8af238a531cbff27951604b09bb78b762cd. Reason for revert: - Causes regressions to transceivers, see https://crbug.com/1291956 for more information, including tests to reproduce the issue. This CL is not a pure revert. While it reverts everything else, it does keep the new enum value (kProfilePredictiveHigh444). This is as to not break Chromium which already depend on it. It is not listed in the kProfilePatterns though so the enum value should never be applicable. Original change's description: > Added support for H264 YUV444 (I444) decoding. > > Added Nutanix Inc. to the AUTHORS file. > > PS#1 is a reland of "Added support for H264 YUV444 (I444) decoding." https://webrtc-review.googlesource.com/c/src/+/234540 > > Bug: chromium:1251096 > Change-Id: I99a1b1e4d8b60192ff96f92334a430240875c66c > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/235340 > Reviewed-by: Niels Moller <nisse@webrtc.org> > Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> > Reviewed-by: Harald Alvestrand <hta@webrtc.org> > Commit-Queue: Harald Alvestrand <hta@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#35684} # Not skipping CQ checks because original CL landed > 1 day ago. Bug: chromium:1251096, chromium:1291956 Change-Id: Ib4d8ea4898f9832914d88e7076e6b39da0c804ca Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249791 Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Auto-Submit: Henrik Boström <hbos@webrtc.org> Reviewed-by: Henrik Boström <hbos@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35835}
140 lines
4.2 KiB
C++
140 lines
4.2 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 "modules/video_coding/codecs/h264/include/h264.h"
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "absl/types/optional.h"
|
|
#include "api/video_codecs/sdp_video_format.h"
|
|
#include "media/base/media_constants.h"
|
|
#include "rtc_base/trace_event.h"
|
|
|
|
#if defined(WEBRTC_USE_H264)
|
|
#include "modules/video_coding/codecs/h264/h264_decoder_impl.h"
|
|
#include "modules/video_coding/codecs/h264/h264_encoder_impl.h"
|
|
#endif
|
|
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/logging.h"
|
|
|
|
namespace webrtc {
|
|
|
|
namespace {
|
|
|
|
#if defined(WEBRTC_USE_H264)
|
|
bool g_rtc_use_h264 = true;
|
|
#endif
|
|
|
|
// If H.264 OpenH264/FFmpeg codec is supported.
|
|
bool IsH264CodecSupported() {
|
|
#if defined(WEBRTC_USE_H264)
|
|
return g_rtc_use_h264;
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
constexpr absl::string_view kSupportedScalabilityModes[] = {"L1T2", "L1T3"};
|
|
|
|
} // namespace
|
|
|
|
SdpVideoFormat CreateH264Format(H264Profile profile,
|
|
H264Level level,
|
|
const std::string& packetization_mode) {
|
|
const absl::optional<std::string> profile_string =
|
|
H264ProfileLevelIdToString(H264ProfileLevelId(profile, level));
|
|
RTC_CHECK(profile_string);
|
|
return SdpVideoFormat(
|
|
cricket::kH264CodecName,
|
|
{{cricket::kH264FmtpProfileLevelId, *profile_string},
|
|
{cricket::kH264FmtpLevelAsymmetryAllowed, "1"},
|
|
{cricket::kH264FmtpPacketizationMode, packetization_mode}});
|
|
}
|
|
|
|
void DisableRtcUseH264() {
|
|
#if defined(WEBRTC_USE_H264)
|
|
g_rtc_use_h264 = false;
|
|
#endif
|
|
}
|
|
|
|
std::vector<SdpVideoFormat> SupportedH264Codecs() {
|
|
TRACE_EVENT0("webrtc", __func__);
|
|
if (!IsH264CodecSupported())
|
|
return std::vector<SdpVideoFormat>();
|
|
// We only support encoding Constrained Baseline Profile (CBP), but the
|
|
// decoder supports more profiles. We can list all profiles here that are
|
|
// supported by the decoder and that are also supersets of CBP, i.e. the
|
|
// decoder for that profile is required to be able to decode CBP. This means
|
|
// we can encode and send CBP even though we negotiated a potentially
|
|
// higher profile. See the H264 spec for more information.
|
|
//
|
|
// We support both packetization modes 0 (mandatory) and 1 (optional,
|
|
// preferred).
|
|
return {CreateH264Format(H264Profile::kProfileBaseline, H264Level::kLevel3_1,
|
|
"1"),
|
|
CreateH264Format(H264Profile::kProfileBaseline, H264Level::kLevel3_1,
|
|
"0"),
|
|
CreateH264Format(H264Profile::kProfileConstrainedBaseline,
|
|
H264Level::kLevel3_1, "1"),
|
|
CreateH264Format(H264Profile::kProfileConstrainedBaseline,
|
|
H264Level::kLevel3_1, "0"),
|
|
CreateH264Format(H264Profile::kProfileMain,
|
|
H264Level::kLevel3_1, "1"),
|
|
CreateH264Format(H264Profile::kProfileMain,
|
|
H264Level::kLevel3_1, "0")};
|
|
}
|
|
|
|
std::unique_ptr<H264Encoder> H264Encoder::Create(
|
|
const cricket::VideoCodec& codec) {
|
|
RTC_DCHECK(H264Encoder::IsSupported());
|
|
#if defined(WEBRTC_USE_H264)
|
|
RTC_CHECK(g_rtc_use_h264);
|
|
RTC_LOG(LS_INFO) << "Creating H264EncoderImpl.";
|
|
return std::make_unique<H264EncoderImpl>(codec);
|
|
#else
|
|
RTC_DCHECK_NOTREACHED();
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
bool H264Encoder::IsSupported() {
|
|
return IsH264CodecSupported();
|
|
}
|
|
|
|
bool H264Encoder::SupportsScalabilityMode(absl::string_view scalability_mode) {
|
|
for (const auto& entry : kSupportedScalabilityModes) {
|
|
if (entry == scalability_mode) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
std::unique_ptr<H264Decoder> H264Decoder::Create() {
|
|
RTC_DCHECK(H264Decoder::IsSupported());
|
|
#if defined(WEBRTC_USE_H264)
|
|
RTC_CHECK(g_rtc_use_h264);
|
|
RTC_LOG(LS_INFO) << "Creating H264DecoderImpl.";
|
|
return std::make_unique<H264DecoderImpl>();
|
|
#else
|
|
RTC_DCHECK_NOTREACHED();
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
bool H264Decoder::IsSupported() {
|
|
return IsH264CodecSupported();
|
|
}
|
|
|
|
} // namespace webrtc
|