| /* |
| * 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. |
| * |
| */ |
| |
| // Everything declared/defined in this header is only required when WebRTC is |
| // build with H264 support, please do not move anything out of the |
| // #ifdef unless needed and tested. |
| #ifdef WEBRTC_USE_H264 |
| |
| #include "modules/video_coding/codecs/h264/h264_decoder_impl.h" |
| |
| #include <algorithm> |
| #include <limits> |
| #include <memory> |
| |
| extern "C" { |
| #include "third_party/ffmpeg/libavcodec/avcodec.h" |
| #include "third_party/ffmpeg/libavformat/avformat.h" |
| #include "third_party/ffmpeg/libavutil/imgutils.h" |
| } // extern "C" |
| |
| #include "api/video/color_space.h" |
| #include "api/video/i010_buffer.h" |
| #include "api/video/i420_buffer.h" |
| #include "common_video/include/video_frame_buffer.h" |
| #include "modules/video_coding/codecs/h264/h264_color_space.h" |
| #include "rtc_base/checks.h" |
| #include "rtc_base/logging.h" |
| #include "system_wrappers/include/metrics.h" |
| |
| namespace webrtc { |
| |
| namespace { |
| |
| constexpr std::array<AVPixelFormat, 8> kPixelFormatsSupported = { |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUV420P10LE, AV_PIX_FMT_YUV422P10LE}; |
| const size_t kYPlaneIndex = 0; |
| const size_t kUPlaneIndex = 1; |
| const size_t kVPlaneIndex = 2; |
| |
| // Used by histograms. Values of entries should not be changed. |
| enum H264DecoderImplEvent { |
| kH264DecoderEventInit = 0, |
| kH264DecoderEventError = 1, |
| kH264DecoderEventMax = 16, |
| }; |
| |
| struct ScopedPtrAVFreePacket { |
| void operator()(AVPacket* packet) { av_packet_free(&packet); } |
| }; |
| typedef std::unique_ptr<AVPacket, ScopedPtrAVFreePacket> ScopedAVPacket; |
| |
| ScopedAVPacket MakeScopedAVPacket() { |
| ScopedAVPacket packet(av_packet_alloc()); |
| return packet; |
| } |
| |
| } // namespace |
| |
| int H264DecoderImpl::AVGetBuffer2(AVCodecContext* context, |
| AVFrame* av_frame, |
| int flags) { |
| // Set in `Configure`. |
| H264DecoderImpl* decoder = static_cast<H264DecoderImpl*>(context->opaque); |
| // DCHECK values set in `Configure`. |
| RTC_DCHECK(decoder); |
| // Necessary capability to be allowed to provide our own buffers. |
| RTC_DCHECK(context->codec->capabilities | AV_CODEC_CAP_DR1); |
| |
| auto pixelFormatSupported = std::find_if( |
| kPixelFormatsSupported.begin(), kPixelFormatsSupported.end(), |
| [context](AVPixelFormat format) { return context->pix_fmt == format; }); |
| |
| RTC_CHECK(pixelFormatSupported != kPixelFormatsSupported.end()); |
| |
| // `av_frame->width` and `av_frame->height` are set by FFmpeg. These are the |
| // actual image's dimensions and may be different from `context->width` and |
| // `context->coded_width` due to reordering. |
| int width = av_frame->width; |
| int height = av_frame->height; |
| // See `lowres`, if used the decoder scales the image by 1/2^(lowres). This |
| // has implications on which resolutions are valid, but we don't use it. |
| RTC_CHECK_EQ(context->lowres, 0); |
| // Adjust the `width` and `height` to values acceptable by the decoder. |
| // Without this, FFmpeg may overflow the buffer. If modified, `width` and/or |
| // `height` are larger than the actual image and the image has to be cropped |
| // (top-left corner) after decoding to avoid visible borders to the right and |
| // bottom of the actual image. |
| avcodec_align_dimensions(context, &width, &height); |
| |
| RTC_CHECK_GE(width, 0); |
| RTC_CHECK_GE(height, 0); |
| int ret = av_image_check_size(static_cast<unsigned int>(width), |
| static_cast<unsigned int>(height), 0, nullptr); |
| if (ret < 0) { |
| RTC_LOG(LS_ERROR) << "Invalid picture size " << width << "x" << height; |
| decoder->ReportError(); |
| return ret; |
| } |
| |
| // The video frame is stored in `frame_buffer`. `av_frame` is FFmpeg's version |
| // of a video frame and will be set up to reference `frame_buffer`'s data. |
| |
| // FFmpeg expects the initial allocation to be zero-initialized according to |
| // http://crbug.com/390941. Our pool is set up to zero-initialize new buffers. |
| // TODO(https://crbug.com/390941): Delete that feature from the video pool, |
| // instead add an explicit call to InitializeData here. |
| rtc::scoped_refptr<PlanarYuvBuffer> frame_buffer; |
| rtc::scoped_refptr<I444Buffer> i444_buffer; |
| rtc::scoped_refptr<I420Buffer> i420_buffer; |
| rtc::scoped_refptr<I422Buffer> i422_buffer; |
| rtc::scoped_refptr<I010Buffer> i010_buffer; |
| rtc::scoped_refptr<I210Buffer> i210_buffer; |
| int bytes_per_pixel = 1; |
| switch (context->pix_fmt) { |
| case AV_PIX_FMT_YUV420P: |
| case AV_PIX_FMT_YUVJ420P: |
| i420_buffer = |
| decoder->ffmpeg_buffer_pool_.CreateI420Buffer(width, height); |
| // Set `av_frame` members as required by FFmpeg. |
| av_frame->data[kYPlaneIndex] = i420_buffer->MutableDataY(); |
| av_frame->linesize[kYPlaneIndex] = i420_buffer->StrideY(); |
| av_frame->data[kUPlaneIndex] = i420_buffer->MutableDataU(); |
| av_frame->linesize[kUPlaneIndex] = i420_buffer->StrideU(); |
| av_frame->data[kVPlaneIndex] = i420_buffer->MutableDataV(); |
| av_frame->linesize[kVPlaneIndex] = i420_buffer->StrideV(); |
| RTC_DCHECK_EQ(av_frame->extended_data, av_frame->data); |
| frame_buffer = i420_buffer; |
| break; |
| case AV_PIX_FMT_YUV444P: |
| case AV_PIX_FMT_YUVJ444P: |
| i444_buffer = |
| decoder->ffmpeg_buffer_pool_.CreateI444Buffer(width, height); |
| // Set `av_frame` members as required by FFmpeg. |
| av_frame->data[kYPlaneIndex] = i444_buffer->MutableDataY(); |
| av_frame->linesize[kYPlaneIndex] = i444_buffer->StrideY(); |
| av_frame->data[kUPlaneIndex] = i444_buffer->MutableDataU(); |
| av_frame->linesize[kUPlaneIndex] = i444_buffer->StrideU(); |
| av_frame->data[kVPlaneIndex] = i444_buffer->MutableDataV(); |
| av_frame->linesize[kVPlaneIndex] = i444_buffer->StrideV(); |
| frame_buffer = i444_buffer; |
| break; |
| case AV_PIX_FMT_YUV422P: |
| case AV_PIX_FMT_YUVJ422P: |
| i422_buffer = |
| decoder->ffmpeg_buffer_pool_.CreateI422Buffer(width, height); |
| // Set `av_frame` members as required by FFmpeg. |
| av_frame->data[kYPlaneIndex] = i422_buffer->MutableDataY(); |
| av_frame->linesize[kYPlaneIndex] = i422_buffer->StrideY(); |
| av_frame->data[kUPlaneIndex] = i422_buffer->MutableDataU(); |
| av_frame->linesize[kUPlaneIndex] = i422_buffer->StrideU(); |
| av_frame->data[kVPlaneIndex] = i422_buffer->MutableDataV(); |
| av_frame->linesize[kVPlaneIndex] = i422_buffer->StrideV(); |
| frame_buffer = i422_buffer; |
| break; |
| case AV_PIX_FMT_YUV420P10LE: |
| i010_buffer = |
| decoder->ffmpeg_buffer_pool_.CreateI010Buffer(width, height); |
| // Set `av_frame` members as required by FFmpeg. |
| av_frame->data[kYPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i010_buffer->MutableDataY()); |
| av_frame->linesize[kYPlaneIndex] = i010_buffer->StrideY() * 2; |
| av_frame->data[kUPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i010_buffer->MutableDataU()); |
| av_frame->linesize[kUPlaneIndex] = i010_buffer->StrideU() * 2; |
| av_frame->data[kVPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i010_buffer->MutableDataV()); |
| av_frame->linesize[kVPlaneIndex] = i010_buffer->StrideV() * 2; |
| frame_buffer = i010_buffer; |
| bytes_per_pixel = 2; |
| break; |
| case AV_PIX_FMT_YUV422P10LE: |
| i210_buffer = |
| decoder->ffmpeg_buffer_pool_.CreateI210Buffer(width, height); |
| // Set `av_frame` members as required by FFmpeg. |
| av_frame->data[kYPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i210_buffer->MutableDataY()); |
| av_frame->linesize[kYPlaneIndex] = i210_buffer->StrideY() * 2; |
| av_frame->data[kUPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i210_buffer->MutableDataU()); |
| av_frame->linesize[kUPlaneIndex] = i210_buffer->StrideU() * 2; |
| av_frame->data[kVPlaneIndex] = |
| reinterpret_cast<uint8_t*>(i210_buffer->MutableDataV()); |
| av_frame->linesize[kVPlaneIndex] = i210_buffer->StrideV() * 2; |
| frame_buffer = i210_buffer; |
| bytes_per_pixel = 2; |
| break; |
| default: |
| RTC_LOG(LS_ERROR) << "Unsupported buffer type " << context->pix_fmt |
| << ". Check supported supported pixel formats!"; |
| decoder->ReportError(); |
| return -1; |
| } |
| |
| int y_size = width * height * bytes_per_pixel; |
| int uv_size = frame_buffer->ChromaWidth() * frame_buffer->ChromaHeight() * |
| bytes_per_pixel; |
| // DCHECK that we have a continuous buffer as is required. |
| RTC_DCHECK_EQ(av_frame->data[kUPlaneIndex], |
| av_frame->data[kYPlaneIndex] + y_size); |
| RTC_DCHECK_EQ(av_frame->data[kVPlaneIndex], |
| av_frame->data[kUPlaneIndex] + uv_size); |
| int total_size = y_size + 2 * uv_size; |
| |
| av_frame->format = context->pix_fmt; |
| av_frame->reordered_opaque = context->reordered_opaque; |
| |
| // Create a VideoFrame object, to keep a reference to the buffer. |
| // TODO(nisse): The VideoFrame's timestamp and rotation info is not used. |
| // Refactor to do not use a VideoFrame object at all. |
| av_frame->buf[0] = av_buffer_create( |
| av_frame->data[kYPlaneIndex], total_size, AVFreeBuffer2, |
| static_cast<void*>( |
| std::make_unique<VideoFrame>(VideoFrame::Builder() |
| .set_video_frame_buffer(frame_buffer) |
| .set_rotation(kVideoRotation_0) |
| .set_timestamp_us(0) |
| .build()) |
| .release()), |
| 0); |
| RTC_CHECK(av_frame->buf[0]); |
| return 0; |
| } |
| |
| void H264DecoderImpl::AVFreeBuffer2(void* opaque, uint8_t* data) { |
| // The buffer pool recycles the buffer used by `video_frame` when there are no |
| // more references to it. `video_frame` is a thin buffer holder and is not |
| // recycled. |
| VideoFrame* video_frame = static_cast<VideoFrame*>(opaque); |
| delete video_frame; |
| } |
| |
| H264DecoderImpl::H264DecoderImpl() |
| : ffmpeg_buffer_pool_(true), |
| decoded_image_callback_(nullptr), |
| has_reported_init_(false), |
| has_reported_error_(false) {} |
| |
| H264DecoderImpl::~H264DecoderImpl() { |
| Release(); |
| } |
| |
| bool H264DecoderImpl::Configure(const Settings& settings) { |
| ReportInit(); |
| if (settings.codec_type() != kVideoCodecH264) { |
| ReportError(); |
| return false; |
| } |
| |
| // Release necessary in case of re-initializing. |
| int32_t ret = Release(); |
| if (ret != WEBRTC_VIDEO_CODEC_OK) { |
| ReportError(); |
| return false; |
| } |
| RTC_DCHECK(!av_context_); |
| |
| // Initialize AVCodecContext. |
| av_context_.reset(avcodec_alloc_context3(nullptr)); |
| |
| av_context_->codec_type = AVMEDIA_TYPE_VIDEO; |
| av_context_->codec_id = AV_CODEC_ID_H264; |
| const RenderResolution& resolution = settings.max_render_resolution(); |
| if (resolution.Valid()) { |
| av_context_->coded_width = resolution.Width(); |
| av_context_->coded_height = resolution.Height(); |
| } |
| av_context_->extradata = nullptr; |
| av_context_->extradata_size = 0; |
| |
| // If this is ever increased, look at `av_context_->thread_safe_callbacks` and |
| // make it possible to disable the thread checker in the frame buffer pool. |
| av_context_->thread_count = 1; |
| av_context_->thread_type = FF_THREAD_SLICE; |
| |
| // Function used by FFmpeg to get buffers to store decoded frames in. |
| av_context_->get_buffer2 = AVGetBuffer2; |
| // `get_buffer2` is called with the context, there `opaque` can be used to get |
| // a pointer `this`. |
| av_context_->opaque = this; |
| |
| const AVCodec* codec = avcodec_find_decoder(av_context_->codec_id); |
| if (!codec) { |
| // This is an indication that FFmpeg has not been initialized or it has not |
| // been compiled/initialized with the correct set of codecs. |
| RTC_LOG(LS_ERROR) << "FFmpeg H.264 decoder not found."; |
| Release(); |
| ReportError(); |
| return false; |
| } |
| int res = avcodec_open2(av_context_.get(), codec, nullptr); |
| if (res < 0) { |
| RTC_LOG(LS_ERROR) << "avcodec_open2 error: " << res; |
| Release(); |
| ReportError(); |
| return false; |
| } |
| |
| av_frame_.reset(av_frame_alloc()); |
| |
| if (absl::optional<int> buffer_pool_size = settings.buffer_pool_size()) { |
| if (!ffmpeg_buffer_pool_.Resize(*buffer_pool_size)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| int32_t H264DecoderImpl::Release() { |
| av_context_.reset(); |
| av_frame_.reset(); |
| return WEBRTC_VIDEO_CODEC_OK; |
| } |
| |
| int32_t H264DecoderImpl::RegisterDecodeCompleteCallback( |
| DecodedImageCallback* callback) { |
| decoded_image_callback_ = callback; |
| return WEBRTC_VIDEO_CODEC_OK; |
| } |
| |
| int32_t H264DecoderImpl::Decode(const EncodedImage& input_image, |
| bool /*missing_frames*/, |
| int64_t /*render_time_ms*/) { |
| if (!IsInitialized()) { |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_UNINITIALIZED; |
| } |
| if (!decoded_image_callback_) { |
| RTC_LOG(LS_WARNING) |
| << "Configure() has been called, but a callback function " |
| "has not been set with RegisterDecodeCompleteCallback()"; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_UNINITIALIZED; |
| } |
| if (!input_image.data() || !input_image.size()) { |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERR_PARAMETER; |
| } |
| |
| ScopedAVPacket packet = MakeScopedAVPacket(); |
| if (!packet) { |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| // packet.data has a non-const type, but isn't modified by |
| // avcodec_send_packet. |
| packet->data = const_cast<uint8_t*>(input_image.data()); |
| if (input_image.size() > |
| static_cast<size_t>(std::numeric_limits<int>::max())) { |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| packet->size = static_cast<int>(input_image.size()); |
| int64_t frame_timestamp_us = input_image.ntp_time_ms_ * 1000; // ms -> μs |
| av_context_->reordered_opaque = frame_timestamp_us; |
| |
| int result = avcodec_send_packet(av_context_.get(), packet.get()); |
| |
| if (result < 0) { |
| RTC_LOG(LS_ERROR) << "avcodec_send_packet error: " << result; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| |
| result = avcodec_receive_frame(av_context_.get(), av_frame_.get()); |
| if (result < 0) { |
| RTC_LOG(LS_ERROR) << "avcodec_receive_frame error: " << result; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| |
| // We don't expect reordering. Decoded frame timestamp should match |
| // the input one. |
| RTC_DCHECK_EQ(av_frame_->reordered_opaque, frame_timestamp_us); |
| |
| // TODO(sakal): Maybe it is possible to get QP directly from FFmpeg. |
| h264_bitstream_parser_.ParseBitstream(input_image); |
| absl::optional<int> qp = h264_bitstream_parser_.GetLastSliceQp(); |
| |
| // Obtain the `video_frame` containing the decoded image. |
| VideoFrame* input_frame = |
| static_cast<VideoFrame*>(av_buffer_get_opaque(av_frame_->buf[0])); |
| RTC_DCHECK(input_frame); |
| rtc::scoped_refptr<VideoFrameBuffer> frame_buffer = |
| input_frame->video_frame_buffer(); |
| |
| // Instantiate Planar YUV buffer according to video frame buffer type |
| const webrtc::PlanarYuvBuffer* planar_yuv_buffer = nullptr; |
| const webrtc::PlanarYuv8Buffer* planar_yuv8_buffer = nullptr; |
| const webrtc::PlanarYuv16BBuffer* planar_yuv16_buffer = nullptr; |
| VideoFrameBuffer::Type video_frame_buffer_type = frame_buffer->type(); |
| switch (video_frame_buffer_type) { |
| case VideoFrameBuffer::Type::kI420: |
| planar_yuv_buffer = frame_buffer->GetI420(); |
| planar_yuv8_buffer = |
| reinterpret_cast<const webrtc::PlanarYuv8Buffer*>(planar_yuv_buffer); |
| break; |
| case VideoFrameBuffer::Type::kI444: |
| planar_yuv_buffer = frame_buffer->GetI444(); |
| planar_yuv8_buffer = |
| reinterpret_cast<const webrtc::PlanarYuv8Buffer*>(planar_yuv_buffer); |
| break; |
| case VideoFrameBuffer::Type::kI422: |
| planar_yuv_buffer = frame_buffer->GetI422(); |
| planar_yuv8_buffer = |
| reinterpret_cast<const webrtc::PlanarYuv8Buffer*>(planar_yuv_buffer); |
| break; |
| case VideoFrameBuffer::Type::kI010: |
| planar_yuv_buffer = frame_buffer->GetI010(); |
| planar_yuv16_buffer = reinterpret_cast<const webrtc::PlanarYuv16BBuffer*>( |
| planar_yuv_buffer); |
| break; |
| case VideoFrameBuffer::Type::kI210: |
| planar_yuv_buffer = frame_buffer->GetI210(); |
| planar_yuv16_buffer = reinterpret_cast<const webrtc::PlanarYuv16BBuffer*>( |
| planar_yuv_buffer); |
| break; |
| default: |
| // If this code is changed to allow other video frame buffer type, |
| // make sure that the code below which wraps I420/I422/I444 buffer and |
| // code which converts to NV12 is changed |
| // to work with new video frame buffer type |
| |
| RTC_LOG(LS_ERROR) << "frame_buffer type: " |
| << static_cast<int32_t>(video_frame_buffer_type) |
| << " is not supported!"; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| |
| // When needed, FFmpeg applies cropping by moving plane pointers and adjusting |
| // frame width/height. Ensure that cropped buffers lie within the allocated |
| // memory. |
| RTC_DCHECK_LE(av_frame_->width, planar_yuv_buffer->width()); |
| RTC_DCHECK_LE(av_frame_->height, planar_yuv_buffer->height()); |
| switch (video_frame_buffer_type) { |
| case VideoFrameBuffer::Type::kI420: |
| case VideoFrameBuffer::Type::kI444: |
| case VideoFrameBuffer::Type::kI422: { |
| RTC_DCHECK_GE(av_frame_->data[kYPlaneIndex], planar_yuv8_buffer->DataY()); |
| RTC_DCHECK_LE( |
| av_frame_->data[kYPlaneIndex] + |
| av_frame_->linesize[kYPlaneIndex] * av_frame_->height, |
| planar_yuv8_buffer->DataY() + |
| planar_yuv8_buffer->StrideY() * planar_yuv8_buffer->height()); |
| RTC_DCHECK_GE(av_frame_->data[kUPlaneIndex], planar_yuv8_buffer->DataU()); |
| RTC_DCHECK_LE( |
| av_frame_->data[kUPlaneIndex] + |
| av_frame_->linesize[kUPlaneIndex] * |
| planar_yuv8_buffer->ChromaHeight(), |
| planar_yuv8_buffer->DataU() + planar_yuv8_buffer->StrideU() * |
| planar_yuv8_buffer->ChromaHeight()); |
| RTC_DCHECK_GE(av_frame_->data[kVPlaneIndex], planar_yuv8_buffer->DataV()); |
| RTC_DCHECK_LE( |
| av_frame_->data[kVPlaneIndex] + |
| av_frame_->linesize[kVPlaneIndex] * |
| planar_yuv8_buffer->ChromaHeight(), |
| planar_yuv8_buffer->DataV() + planar_yuv8_buffer->StrideV() * |
| planar_yuv8_buffer->ChromaHeight()); |
| break; |
| } |
| case VideoFrameBuffer::Type::kI010: |
| case VideoFrameBuffer::Type::kI210: { |
| RTC_DCHECK_GE( |
| av_frame_->data[kYPlaneIndex], |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataY())); |
| RTC_DCHECK_LE( |
| av_frame_->data[kYPlaneIndex] + |
| av_frame_->linesize[kYPlaneIndex] * av_frame_->height, |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataY()) + |
| planar_yuv16_buffer->StrideY() * 2 * |
| planar_yuv16_buffer->height()); |
| RTC_DCHECK_GE( |
| av_frame_->data[kUPlaneIndex], |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataU())); |
| RTC_DCHECK_LE( |
| av_frame_->data[kUPlaneIndex] + |
| av_frame_->linesize[kUPlaneIndex] * |
| planar_yuv16_buffer->ChromaHeight(), |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataU()) + |
| planar_yuv16_buffer->StrideU() * 2 * |
| planar_yuv16_buffer->ChromaHeight()); |
| RTC_DCHECK_GE( |
| av_frame_->data[kVPlaneIndex], |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataV())); |
| RTC_DCHECK_LE( |
| av_frame_->data[kVPlaneIndex] + |
| av_frame_->linesize[kVPlaneIndex] * |
| planar_yuv16_buffer->ChromaHeight(), |
| reinterpret_cast<const uint8_t*>(planar_yuv16_buffer->DataV()) + |
| planar_yuv16_buffer->StrideV() * 2 * |
| planar_yuv16_buffer->ChromaHeight()); |
| break; |
| } |
| default: |
| RTC_LOG(LS_ERROR) << "frame_buffer type: " |
| << static_cast<int32_t>(video_frame_buffer_type) |
| << " is not supported!"; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| |
| rtc::scoped_refptr<webrtc::VideoFrameBuffer> cropped_buffer; |
| switch (video_frame_buffer_type) { |
| case VideoFrameBuffer::Type::kI420: |
| cropped_buffer = WrapI420Buffer( |
| av_frame_->width, av_frame_->height, av_frame_->data[kYPlaneIndex], |
| av_frame_->linesize[kYPlaneIndex], av_frame_->data[kUPlaneIndex], |
| av_frame_->linesize[kUPlaneIndex], av_frame_->data[kVPlaneIndex], |
| av_frame_->linesize[kVPlaneIndex], |
| // To keep reference alive. |
| [frame_buffer] {}); |
| break; |
| case VideoFrameBuffer::Type::kI444: |
| cropped_buffer = WrapI444Buffer( |
| av_frame_->width, av_frame_->height, av_frame_->data[kYPlaneIndex], |
| av_frame_->linesize[kYPlaneIndex], av_frame_->data[kUPlaneIndex], |
| av_frame_->linesize[kUPlaneIndex], av_frame_->data[kVPlaneIndex], |
| av_frame_->linesize[kVPlaneIndex], |
| // To keep reference alive. |
| [frame_buffer] {}); |
| break; |
| case VideoFrameBuffer::Type::kI422: |
| cropped_buffer = WrapI422Buffer( |
| av_frame_->width, av_frame_->height, av_frame_->data[kYPlaneIndex], |
| av_frame_->linesize[kYPlaneIndex], av_frame_->data[kUPlaneIndex], |
| av_frame_->linesize[kUPlaneIndex], av_frame_->data[kVPlaneIndex], |
| av_frame_->linesize[kVPlaneIndex], |
| // To keep reference alive. |
| [frame_buffer] {}); |
| break; |
| case VideoFrameBuffer::Type::kI010: |
| cropped_buffer = WrapI010Buffer( |
| av_frame_->width, av_frame_->height, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kYPlaneIndex]), |
| av_frame_->linesize[kYPlaneIndex] / 2, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kUPlaneIndex]), |
| av_frame_->linesize[kUPlaneIndex] / 2, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kVPlaneIndex]), |
| av_frame_->linesize[kVPlaneIndex] / 2, |
| // To keep reference alive. |
| [frame_buffer] {}); |
| break; |
| case VideoFrameBuffer::Type::kI210: |
| cropped_buffer = WrapI210Buffer( |
| av_frame_->width, av_frame_->height, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kYPlaneIndex]), |
| av_frame_->linesize[kYPlaneIndex] / 2, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kUPlaneIndex]), |
| av_frame_->linesize[kUPlaneIndex] / 2, |
| reinterpret_cast<const uint16_t*>(av_frame_->data[kVPlaneIndex]), |
| av_frame_->linesize[kVPlaneIndex] / 2, |
| // To keep reference alive. |
| [frame_buffer] {}); |
| break; |
| default: |
| RTC_LOG(LS_ERROR) << "frame_buffer type: " |
| << static_cast<int32_t>(video_frame_buffer_type) |
| << " is not supported!"; |
| ReportError(); |
| return WEBRTC_VIDEO_CODEC_ERROR; |
| } |
| |
| // Pass on color space from input frame if explicitly specified. |
| const ColorSpace& color_space = |
| input_image.ColorSpace() ? *input_image.ColorSpace() |
| : ExtractH264ColorSpace(av_context_.get()); |
| |
| VideoFrame decoded_frame = VideoFrame::Builder() |
| .set_video_frame_buffer(cropped_buffer) |
| .set_timestamp_rtp(input_image.Timestamp()) |
| .set_color_space(color_space) |
| .build(); |
| |
| // Return decoded frame. |
| // TODO(nisse): Timestamp and rotation are all zero here. Change decoder |
| // interface to pass a VideoFrameBuffer instead of a VideoFrame? |
| decoded_image_callback_->Decoded(decoded_frame, absl::nullopt, qp); |
| |
| // Stop referencing it, possibly freeing `input_frame`. |
| av_frame_unref(av_frame_.get()); |
| input_frame = nullptr; |
| |
| return WEBRTC_VIDEO_CODEC_OK; |
| } |
| |
| const char* H264DecoderImpl::ImplementationName() const { |
| return "FFmpeg"; |
| } |
| |
| bool H264DecoderImpl::IsInitialized() const { |
| return av_context_ != nullptr; |
| } |
| |
| void H264DecoderImpl::ReportInit() { |
| if (has_reported_init_) |
| return; |
| RTC_HISTOGRAM_ENUMERATION("WebRTC.Video.H264DecoderImpl.Event", |
| kH264DecoderEventInit, kH264DecoderEventMax); |
| has_reported_init_ = true; |
| } |
| |
| void H264DecoderImpl::ReportError() { |
| if (has_reported_error_) |
| return; |
| RTC_HISTOGRAM_ENUMERATION("WebRTC.Video.H264DecoderImpl.Event", |
| kH264DecoderEventError, kH264DecoderEventMax); |
| has_reported_error_ = true; |
| } |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_USE_H264 |
