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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webcodecs/video_decoder_helper.h"
#if BUILDFLAG(USE_PROPRIETARY_CODECS)
#include "media/filters/h264_to_annex_b_bitstream_converter.h" // nogncheck
#include "media/formats/mp4/box_definitions.h" // nogncheck
#if BUILDFLAG(ENABLE_PLATFORM_HEVC)
#include "media/filters/h265_to_annex_b_bitstream_converter.h" // nogncheck
#include "media/formats/mp4/hevc.h" // nogncheck
#endif // BUILDFLAG(ENABLE_PLATFORM_HEVC)
#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
#include "media/base/media_types.h"
namespace blink {
// static
std::unique_ptr<VideoDecoderHelper> VideoDecoderHelper::Create(
media::VideoType video_type,
const uint8_t* configuration_record,
int configuration_record_size,
Status* status_out) {
DCHECK(configuration_record);
DCHECK(configuration_record_size);
DCHECK(status_out);
std::unique_ptr<VideoDecoderHelper> decoder_helper = nullptr;
if (video_type.codec != media::VideoCodec::kH264 &&
video_type.codec != media::VideoCodec::kHEVC) {
*status_out = Status::kUnsupportedCodec;
} else {
#if !BUILDFLAG(USE_PROPRIETARY_CODECS)
if (video_type.codec == media::VideoCodec::kH264) {
*status_out = Status::kUnsupportedCodec;
return nullptr;
}
#endif // !BUILDFLAG(USE_PROPRIETARY_CODECS)
#if !BUILDFLAG(USE_PROPRIETARY_CODECS) || !BUILDFLAG(ENABLE_PLATFORM_HEVC)
if (video_type.codec == media::VideoCodec::kHEVC) {
*status_out = Status::kUnsupportedCodec;
return nullptr;
}
#endif // !BUILDFLAG(USE_PROPRIETARY_CODECS) ||
// !BUILDFLAG(ENABLE_PLATFORM_HEVC)
decoder_helper = std::make_unique<VideoDecoderHelper>(video_type);
*status_out = decoder_helper->Initialize(configuration_record,
configuration_record_size);
}
if (*status_out != Status::kSucceed) {
decoder_helper.reset();
return nullptr;
} else {
return decoder_helper;
}
}
VideoDecoderHelper::VideoDecoderHelper(media::VideoType video_type) {
#if BUILDFLAG(USE_PROPRIETARY_CODECS)
if (video_type.codec == media::VideoCodec::kH264) {
h264_avcc_ = std::make_unique<media::mp4::AVCDecoderConfigurationRecord>();
h264_converter_ = std::make_unique<media::H264ToAnnexBBitstreamConverter>();
}
#if BUILDFLAG(ENABLE_PLATFORM_HEVC)
if (video_type.codec == media::VideoCodec::kHEVC) {
h265_hvcc_ = std::make_unique<media::mp4::HEVCDecoderConfigurationRecord>();
h265_converter_ = std::make_unique<media::H265ToAnnexBBitstreamConverter>();
}
#endif // BUILDFLAG(ENABLE_PLATFORM_HEVC)
#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
}
VideoDecoderHelper::~VideoDecoderHelper() = default;
VideoDecoderHelper::Status VideoDecoderHelper::Initialize(
const uint8_t* configuration_record,
int configuration_record_size) {
#if BUILDFLAG(USE_PROPRIETARY_CODECS)
bool initialized = false;
if (h264_converter_ && h264_avcc_) {
initialized = h264_converter_->ParseConfiguration(
configuration_record, configuration_record_size, h264_avcc_.get());
}
#if BUILDFLAG(ENABLE_PLATFORM_HEVC)
else if (h265_converter_ && h265_hvcc_) {
initialized = h265_converter_->ParseConfiguration(
configuration_record, configuration_record_size, h265_hvcc_.get());
}
#endif // BUILDFLAG(ENABLE_PLATFORM_HEVC)
if (initialized) {
return Status::kSucceed;
} else {
return Status::kDescriptionParseFailed;
}
#else
return Status::kUnsupportedCodec;
#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
}
uint32_t VideoDecoderHelper::CalculateNeededOutputBufferSize(
const uint8_t* input,
uint32_t input_size,
bool is_first_chunk) const {
uint32_t output_size = 0;
#if BUILDFLAG(USE_PROPRIETARY_CODECS)
if (h264_converter_ && h264_avcc_) {
output_size = h264_converter_->CalculateNeededOutputBufferSize(
input, input_size, is_first_chunk ? h264_avcc_.get() : nullptr);
}
#if BUILDFLAG(ENABLE_PLATFORM_HEVC)
else if (h265_converter_ && h265_hvcc_) {
output_size = h265_converter_->CalculateNeededOutputBufferSize(
input, input_size, is_first_chunk ? h265_hvcc_.get() : nullptr);
}
#endif // BUILDFLAG(ENABLE_PLATFORM_HEVC)
#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
return output_size;
}
VideoDecoderHelper::Status VideoDecoderHelper::ConvertNalUnitStreamToByteStream(
const uint8_t* input,
uint32_t input_size,
uint8_t* output,
uint32_t* output_size,
bool is_first_chunk) {
bool converted = false;
#if BUILDFLAG(USE_PROPRIETARY_CODECS)
if (h264_converter_ && h264_avcc_) {
converted = h264_converter_->ConvertNalUnitStreamToByteStream(
input, input_size, is_first_chunk ? h264_avcc_.get() : nullptr, output,
output_size);
}
#if BUILDFLAG(ENABLE_PLATFORM_HEVC)
else if (h265_converter_ && h265_hvcc_) {
converted = h265_converter_->ConvertNalUnitStreamToByteStream(
input, input_size, is_first_chunk ? h265_hvcc_.get() : nullptr, output,
output_size);
}
#endif // BUILDFLAG(ENABLE_PLATFORM_HEVC)
#endif // BUILDFLAG(USE_PROPRIETARY_CODECS)
return converted ? Status::kSucceed : Status::kBitstreamConvertFailed;
}
} // namespace blink
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