#include "media/base/video_frame.h"
#include "media/base/video_util.h"
#include "media/filters/gpu_video_accelerator_factories.h"
+#include "media/filters/h264_parser.h"
#include "media/video/video_encode_accelerator.h"
#include "third_party/webrtc/system_wrappers/interface/tick_util.h"
namespace content {
+namespace {
+
+// Populates struct webrtc::RTPFragmentationHeader for H264 codec.
+// Each entry specifies the offset and length (excluding start code) of a NALU.
+// Returns true if successful.
+bool GetRTPFragmentationHeaderH264(webrtc::RTPFragmentationHeader* header,
+ const uint8_t* data, uint32_t length) {
+ media::H264Parser parser;
+ parser.SetStream(data, length);
+
+ std::vector<media::H264NALU> nalu_vector;
+ while (true) {
+ media::H264NALU nalu;
+ const media::H264Parser::Result result = parser.AdvanceToNextNALU(&nalu);
+ if (result == media::H264Parser::kOk) {
+ nalu_vector.push_back(nalu);
+ } else if (result == media::H264Parser::kEOStream) {
+ break;
+ } else {
+ DLOG(ERROR) << "Unexpected H264 parser result";
+ return false;
+ }
+ }
+
+ header->VerifyAndAllocateFragmentationHeader(nalu_vector.size());
+ for (size_t i = 0; i < nalu_vector.size(); ++i) {
+ header->fragmentationOffset[i] = nalu_vector[i].data - data;
+ header->fragmentationLength[i] = nalu_vector[i].size;
+ header->fragmentationPlType[i] = 0;
+ header->fragmentationTimeDiff[i] = 0;
+ }
+ return true;
+}
+
+} // namespace
+
// This private class of RTCVideoEncoder does the actual work of communicating
// with a media::VideoEncodeAccelerator for handling video encoding. It can
// be created on any thread, but should subsequently be posted to (and Destroy()
if (!encoded_image_callback_)
return;
+ webrtc::RTPFragmentationHeader header;
+ memset(&header, 0, sizeof(header));
+ switch (video_codec_type_) {
+ case webrtc::kVideoCodecVP8:
+ case webrtc::kVideoCodecGeneric:
+ // Generate a header describing a single fragment.
+ // Note that webrtc treats the generic-type payload as an opaque buffer.
+ header.VerifyAndAllocateFragmentationHeader(1);
+ header.fragmentationOffset[0] = 0;
+ header.fragmentationLength[0] = image->_length;
+ header.fragmentationPlType[0] = 0;
+ header.fragmentationTimeDiff[0] = 0;
+ break;
+ case webrtc::kVideoCodecH264:
+ if (!GetRTPFragmentationHeaderH264(
+ &header, image->_buffer, image->_length)) {
+ DLOG(ERROR) << "Failed to get RTP fragmentation header for H264";
+ NotifyError(WEBRTC_VIDEO_CODEC_ERROR);
+ return;
+ }
+ break;
+ default:
+ NOTREACHED() << "Invalid video codec type";
+ return;
+ }
+
webrtc::CodecSpecificInfo info;
memset(&info, 0, sizeof(info));
info.codecType = video_codec_type_;
info.codecSpecific.VP8.keyIdx = -1;
}
- // Generate a header describing a single fragment.
- webrtc::RTPFragmentationHeader header;
- memset(&header, 0, sizeof(header));
- header.VerifyAndAllocateFragmentationHeader(1);
- header.fragmentationOffset[0] = 0;
- header.fragmentationLength[0] = image->_length;
- header.fragmentationPlType[0] = 0;
- header.fragmentationTimeDiff[0] = 0;
-
int32_t retval = encoded_image_callback_->Encoded(*image, &info, &header);
if (retval < 0) {
DVLOG(2) << "ReturnEncodedImage(): encoded_image_callback_ returned "