diff -r 000000000000 -r 6474c204b198 content/media/ogg/OggWriter.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/content/media/ogg/OggWriter.cpp Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,201 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ +#include "OggWriter.h" +#include "prtime.h" + +#undef LOG +#ifdef MOZ_WIDGET_GONK +#include +#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "MediaEncoder", ## args); +#else +#define LOG(args, ...) +#endif + +namespace mozilla { + +OggWriter::OggWriter() : ContainerWriter() +{ + if (NS_FAILED(Init())) { + LOG("ERROR! Fail to initialize the OggWriter."); + } +} + +OggWriter::~OggWriter() +{ + if (mInitialized) { + ogg_stream_clear(&mOggStreamState); + } + // mPacket's data was always owned by us, no need to ogg_packet_clear. +} + +nsresult +OggWriter::Init() +{ + MOZ_ASSERT(!mInitialized); + + // The serial number (serialno) should be a random number, for the current + // implementation where the output file contains only a single stream, this + // serialno is used to differentiate between files. + srand(static_cast(PR_Now())); + int rc = ogg_stream_init(&mOggStreamState, rand()); + + mPacket.b_o_s = 1; + mPacket.e_o_s = 0; + mPacket.granulepos = 0; + mPacket.packet = nullptr; + mPacket.packetno = 0; + mPacket.bytes = 0; + + mInitialized = (rc == 0); + + return (rc == 0) ? NS_OK : NS_ERROR_NOT_INITIALIZED; +} + +nsresult +OggWriter::WriteEncodedTrack(const EncodedFrameContainer& aData, + uint32_t aFlags) +{ + for (uint32_t i = 0; i < aData.GetEncodedFrames().Length(); i++) { + if (aData.GetEncodedFrames()[i]->GetFrameType() != EncodedFrame::OPUS_AUDIO_FRAME) { + LOG("[OggWriter] wrong encoded data type!"); + return NS_ERROR_FAILURE; + } + + nsresult rv = WriteEncodedData(aData.GetEncodedFrames()[i]->GetFrameData(), + aData.GetEncodedFrames()[i]->GetDuration(), + aFlags); + if (NS_FAILED(rv)) { + LOG("%p Failed to WriteEncodedTrack!", this); + return rv; + } + } + return NS_OK; +} + +nsresult +OggWriter::WriteEncodedData(const nsTArray& aBuffer, int aDuration, + uint32_t aFlags) +{ + if (!mInitialized) { + LOG("[OggWriter] OggWriter has not initialized!"); + return NS_ERROR_FAILURE; + } + + MOZ_ASSERT(!ogg_stream_eos(&mOggStreamState), + "No data can be written after eos has marked."); + + // Set eos flag to true, and once the eos is written to a packet, there must + // not be anymore pages after a page has marked as eos. + if (aFlags & ContainerWriter::END_OF_STREAM) { + LOG("[OggWriter] Set e_o_s flag to true."); + mPacket.e_o_s = 1; + } + + mPacket.packet = const_cast(aBuffer.Elements()); + mPacket.bytes = aBuffer.Length(); + mPacket.granulepos += aDuration; + + // 0 returned on success. -1 returned in the event of internal error. + // The data in the packet is copied into the internal storage managed by the + // mOggStreamState, so we are free to alter the contents of mPacket after + // this call has returned. + int rc = ogg_stream_packetin(&mOggStreamState, &mPacket); + if (rc < 0) { + LOG("[OggWriter] Failed in ogg_stream_packetin! (%d).", rc); + return NS_ERROR_FAILURE; + } + + if (mPacket.b_o_s) { + mPacket.b_o_s = 0; + } + mPacket.packetno++; + mPacket.packet = nullptr; + + return NS_OK; +} + +void +OggWriter::ProduceOggPage(nsTArray >* aOutputBufs) +{ + aOutputBufs->AppendElement(); + aOutputBufs->LastElement().SetLength(mOggPage.header_len + + mOggPage.body_len); + memcpy(aOutputBufs->LastElement().Elements(), mOggPage.header, + mOggPage.header_len); + memcpy(aOutputBufs->LastElement().Elements() + mOggPage.header_len, + mOggPage.body, mOggPage.body_len); +} + +nsresult +OggWriter::GetContainerData(nsTArray >* aOutputBufs, + uint32_t aFlags) +{ + int rc = -1; + // Generate the oggOpus Header + if (aFlags & ContainerWriter::GET_HEADER) { + OpusMetadata* meta = static_cast(mMetadata.get()); + NS_ASSERTION(meta, "should have meta data"); + NS_ASSERTION(meta->GetKind() == TrackMetadataBase::METADATA_OPUS, + "should have Opus meta data"); + + nsresult rv = WriteEncodedData(meta->mIdHeader, 0); + NS_ENSURE_SUCCESS(rv, rv); + + rc = ogg_stream_flush(&mOggStreamState, &mOggPage); + NS_ENSURE_TRUE(rc > 0, NS_ERROR_FAILURE); + ProduceOggPage(aOutputBufs); + + rv = WriteEncodedData(meta->mCommentHeader, 0); + NS_ENSURE_SUCCESS(rv, rv); + + rc = ogg_stream_flush(&mOggStreamState, &mOggPage); + NS_ENSURE_TRUE(rc > 0, NS_ERROR_FAILURE); + + ProduceOggPage(aOutputBufs); + return NS_OK; + + // Force generate a page even if the amount of packet data is not enough. + // Usually do so after a header packet. + } else if (aFlags & ContainerWriter::FLUSH_NEEDED) { + // rc = 0 means no packet to put into a page, or an internal error. + rc = ogg_stream_flush(&mOggStreamState, &mOggPage); + } else { + // rc = 0 means insufficient data has accumulated to fill a page, or an + // internal error has occurred. + rc = ogg_stream_pageout(&mOggStreamState, &mOggPage); + } + + if (rc) { + ProduceOggPage(aOutputBufs); + } + if (aFlags & ContainerWriter::FLUSH_NEEDED) { + mIsWritingComplete = true; + } + return (rc > 0) ? NS_OK : NS_ERROR_FAILURE; +} + +nsresult +OggWriter::SetMetadata(TrackMetadataBase* aMetadata) +{ + MOZ_ASSERT(aMetadata); + if (aMetadata->GetKind() != TrackMetadataBase::METADATA_OPUS) { + LOG("wrong meta data type!"); + return NS_ERROR_FAILURE; + } + // Validate each field of METADATA + mMetadata = static_cast(aMetadata); + if (mMetadata->mIdHeader.Length() == 0) { + LOG("miss mIdHeader!"); + return NS_ERROR_FAILURE; + } + if (mMetadata->mCommentHeader.Length() == 0) { + LOG("miss mCommentHeader!"); + return NS_ERROR_FAILURE; + } + + return NS_OK; +} + +}