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/*
* Copyright (c) 2018 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/vp9/include/vp9.h"
#include <memory>
#include "absl/container/inlined_vector.h"
#include "api/transport/field_trial_based_config.h"
#include "api/video_codecs/scalability_mode.h"
#include "api/video_codecs/sdp_video_format.h"
#include "api/video_codecs/vp9_profile.h"
#include "media/base/media_constants.h"
#include "modules/video_coding/codecs/vp9/libvpx_vp9_decoder.h"
#include "modules/video_coding/codecs/vp9/libvpx_vp9_encoder.h"
#include "modules/video_coding/svc/create_scalability_structure.h"
#include "rtc_base/checks.h"
#include "vpx/vp8cx.h"
#include "vpx/vp8dx.h"
#include "vpx/vpx_codec.h"
namespace webrtc {
std::vector<SdpVideoFormat> SupportedVP9Codecs(bool add_scalability_modes) {
#ifdef RTC_ENABLE_VP9
// Profile 2 might not be available on some platforms until
// https://bugs.chromium.org/p/webm/issues/detail?id=1544 is solved.
static bool vpx_supports_high_bit_depth =
(vpx_codec_get_caps(vpx_codec_vp9_cx()) & VPX_CODEC_CAP_HIGHBITDEPTH) !=
0 &&
(vpx_codec_get_caps(vpx_codec_vp9_dx()) & VPX_CODEC_CAP_HIGHBITDEPTH) !=
0;
absl::InlinedVector<ScalabilityMode, kScalabilityModeCount> scalability_modes;
if (add_scalability_modes) {
for (const auto scalability_mode : kAllScalabilityModes) {
if (ScalabilityStructureConfig(scalability_mode).has_value()) {
scalability_modes.push_back(scalability_mode);
}
}
}
std::vector<SdpVideoFormat> supported_formats{SdpVideoFormat(
cricket::kVp9CodecName,
{{kVP9FmtpProfileId, VP9ProfileToString(VP9Profile::kProfile0)}},
scalability_modes)};
if (vpx_supports_high_bit_depth) {
supported_formats.push_back(SdpVideoFormat(
cricket::kVp9CodecName,
{{kVP9FmtpProfileId, VP9ProfileToString(VP9Profile::kProfile2)}},
scalability_modes));
}
return supported_formats;
#else
return std::vector<SdpVideoFormat>();
#endif
}
std::vector<SdpVideoFormat> SupportedVP9DecoderCodecs() {
#ifdef RTC_ENABLE_VP9
std::vector<SdpVideoFormat> supported_formats = SupportedVP9Codecs();
// The WebRTC internal decoder supports VP9 profile 1 and 3. However, there's
// currently no way of sending VP9 profile 1 or 3 using the internal encoder.
// It would require extended support for I444, I422, and I440 buffers.
supported_formats.push_back(SdpVideoFormat(
cricket::kVp9CodecName,
{{kVP9FmtpProfileId, VP9ProfileToString(VP9Profile::kProfile1)}}));
supported_formats.push_back(SdpVideoFormat(
cricket::kVp9CodecName,
{{kVP9FmtpProfileId, VP9ProfileToString(VP9Profile::kProfile3)}}));
return supported_formats;
#else
return std::vector<SdpVideoFormat>();
#endif
}
std::unique_ptr<VP9Encoder> VP9Encoder::Create() {
#ifdef RTC_ENABLE_VP9
return std::make_unique<LibvpxVp9Encoder>(
cricket::CreateVideoCodec(cricket::kVp9CodecName),
LibvpxInterface::Create(), FieldTrialBasedConfig());
#else
RTC_DCHECK_NOTREACHED();
return nullptr;
#endif
}
std::unique_ptr<VP9Encoder> VP9Encoder::Create(
const cricket::VideoCodec& codec) {
#ifdef RTC_ENABLE_VP9
return std::make_unique<LibvpxVp9Encoder>(codec, LibvpxInterface::Create(),
FieldTrialBasedConfig());
#else
RTC_DCHECK_NOTREACHED();
return nullptr;
#endif
}
bool VP9Encoder::SupportsScalabilityMode(ScalabilityMode scalability_mode) {
return ScalabilityStructureConfig(scalability_mode).has_value();
}
std::unique_ptr<VP9Decoder> VP9Decoder::Create() {
#ifdef RTC_ENABLE_VP9
return std::make_unique<LibvpxVp9Decoder>();
#else
RTC_DCHECK_NOTREACHED();
return nullptr;
#endif
}
} // namespace webrtc
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