The Tor Browser / file comparison
comparison: content/media/ogg/OggWriter.cpp
content/media/ogg/OggWriter.cpp
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
equal
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| -1:000000000000 | 0:af253e393a3b |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 #include "OggWriter.h" | |
| 6 #include "prtime.h" | |
| 7 | |
| 8 #undef LOG | |
| 9 #ifdef MOZ_WIDGET_GONK | |
| 10 #include <android/log.h> | |
| 11 #define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "MediaEncoder", ## args); | |
| 12 #else | |
| 13 #define LOG(args, ...) | |
| 14 #endif | |
| 15 | |
| 16 namespace mozilla { | |
| 17 | |
| 18 OggWriter::OggWriter() : ContainerWriter() | |
| 19 { | |
| 20 if (NS_FAILED(Init())) { | |
| 21 LOG("ERROR! Fail to initialize the OggWriter."); | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 OggWriter::~OggWriter() | |
| 26 { | |
| 27 if (mInitialized) { | |
| 28 ogg_stream_clear(&mOggStreamState); | |
| 29 } | |
| 30 // mPacket's data was always owned by us, no need to ogg_packet_clear. | |
| 31 } | |
| 32 | |
| 33 nsresult | |
| 34 OggWriter::Init() | |
| 35 { | |
| 36 MOZ_ASSERT(!mInitialized); | |
| 37 | |
| 38 // The serial number (serialno) should be a random number, for the current | |
| 39 // implementation where the output file contains only a single stream, this | |
| 40 // serialno is used to differentiate between files. | |
| 41 srand(static_cast<unsigned>(PR_Now())); | |
| 42 int rc = ogg_stream_init(&mOggStreamState, rand()); | |
| 43 | |
| 44 mPacket.b_o_s = 1; | |
| 45 mPacket.e_o_s = 0; | |
| 46 mPacket.granulepos = 0; | |
| 47 mPacket.packet = nullptr; | |
| 48 mPacket.packetno = 0; | |
| 49 mPacket.bytes = 0; | |
| 50 | |
| 51 mInitialized = (rc == 0); | |
| 52 | |
| 53 return (rc == 0) ? NS_OK : NS_ERROR_NOT_INITIALIZED; | |
| 54 } | |
| 55 | |
| 56 nsresult | |
| 57 OggWriter::WriteEncodedTrack(const EncodedFrameContainer& aData, | |
| 58 uint32_t aFlags) | |
| 59 { | |
| 60 for (uint32_t i = 0; i < aData.GetEncodedFrames().Length(); i++) { | |
| 61 if (aData.GetEncodedFrames()[i]->GetFrameType() != EncodedFrame::OPUS_AUDIO_FRAME) { | |
| 62 LOG("[OggWriter] wrong encoded data type!"); | |
| 63 return NS_ERROR_FAILURE; | |
| 64 } | |
| 65 | |
| 66 nsresult rv = WriteEncodedData(aData.GetEncodedFrames()[i]->GetFrameData(), | |
| 67 aData.GetEncodedFrames()[i]->GetDuration(), | |
| 68 aFlags); | |
| 69 if (NS_FAILED(rv)) { | |
| 70 LOG("%p Failed to WriteEncodedTrack!", this); | |
| 71 return rv; | |
| 72 } | |
| 73 } | |
| 74 return NS_OK; | |
| 75 } | |
| 76 | |
| 77 nsresult | |
| 78 OggWriter::WriteEncodedData(const nsTArray<uint8_t>& aBuffer, int aDuration, | |
| 79 uint32_t aFlags) | |
| 80 { | |
| 81 if (!mInitialized) { | |
| 82 LOG("[OggWriter] OggWriter has not initialized!"); | |
| 83 return NS_ERROR_FAILURE; | |
| 84 } | |
| 85 | |
| 86 MOZ_ASSERT(!ogg_stream_eos(&mOggStreamState), | |
| 87 "No data can be written after eos has marked."); | |
| 88 | |
| 89 // Set eos flag to true, and once the eos is written to a packet, there must | |
| 90 // not be anymore pages after a page has marked as eos. | |
| 91 if (aFlags & ContainerWriter::END_OF_STREAM) { | |
| 92 LOG("[OggWriter] Set e_o_s flag to true."); | |
| 93 mPacket.e_o_s = 1; | |
| 94 } | |
| 95 | |
| 96 mPacket.packet = const_cast<uint8_t*>(aBuffer.Elements()); | |
| 97 mPacket.bytes = aBuffer.Length(); | |
| 98 mPacket.granulepos += aDuration; | |
| 99 | |
| 100 // 0 returned on success. -1 returned in the event of internal error. | |
| 101 // The data in the packet is copied into the internal storage managed by the | |
| 102 // mOggStreamState, so we are free to alter the contents of mPacket after | |
| 103 // this call has returned. | |
| 104 int rc = ogg_stream_packetin(&mOggStreamState, &mPacket); | |
| 105 if (rc < 0) { | |
| 106 LOG("[OggWriter] Failed in ogg_stream_packetin! (%d).", rc); | |
| 107 return NS_ERROR_FAILURE; | |
| 108 } | |
| 109 | |
| 110 if (mPacket.b_o_s) { | |
| 111 mPacket.b_o_s = 0; | |
| 112 } | |
| 113 mPacket.packetno++; | |
| 114 mPacket.packet = nullptr; | |
| 115 | |
| 116 return NS_OK; | |
| 117 } | |
| 118 | |
| 119 void | |
| 120 OggWriter::ProduceOggPage(nsTArray<nsTArray<uint8_t> >* aOutputBufs) | |
| 121 { | |
| 122 aOutputBufs->AppendElement(); | |
| 123 aOutputBufs->LastElement().SetLength(mOggPage.header_len + | |
| 124 mOggPage.body_len); | |
| 125 memcpy(aOutputBufs->LastElement().Elements(), mOggPage.header, | |
| 126 mOggPage.header_len); | |
| 127 memcpy(aOutputBufs->LastElement().Elements() + mOggPage.header_len, | |
| 128 mOggPage.body, mOggPage.body_len); | |
| 129 } | |
| 130 | |
| 131 nsresult | |
| 132 OggWriter::GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs, | |
| 133 uint32_t aFlags) | |
| 134 { | |
| 135 int rc = -1; | |
| 136 // Generate the oggOpus Header | |
| 137 if (aFlags & ContainerWriter::GET_HEADER) { | |
| 138 OpusMetadata* meta = static_cast<OpusMetadata*>(mMetadata.get()); | |
| 139 NS_ASSERTION(meta, "should have meta data"); | |
| 140 NS_ASSERTION(meta->GetKind() == TrackMetadataBase::METADATA_OPUS, | |
| 141 "should have Opus meta data"); | |
| 142 | |
| 143 nsresult rv = WriteEncodedData(meta->mIdHeader, 0); | |
| 144 NS_ENSURE_SUCCESS(rv, rv); | |
| 145 | |
| 146 rc = ogg_stream_flush(&mOggStreamState, &mOggPage); | |
| 147 NS_ENSURE_TRUE(rc > 0, NS_ERROR_FAILURE); | |
| 148 ProduceOggPage(aOutputBufs); | |
| 149 | |
| 150 rv = WriteEncodedData(meta->mCommentHeader, 0); | |
| 151 NS_ENSURE_SUCCESS(rv, rv); | |
| 152 | |
| 153 rc = ogg_stream_flush(&mOggStreamState, &mOggPage); | |
| 154 NS_ENSURE_TRUE(rc > 0, NS_ERROR_FAILURE); | |
| 155 | |
| 156 ProduceOggPage(aOutputBufs); | |
| 157 return NS_OK; | |
| 158 | |
| 159 // Force generate a page even if the amount of packet data is not enough. | |
| 160 // Usually do so after a header packet. | |
| 161 } else if (aFlags & ContainerWriter::FLUSH_NEEDED) { | |
| 162 // rc = 0 means no packet to put into a page, or an internal error. | |
| 163 rc = ogg_stream_flush(&mOggStreamState, &mOggPage); | |
| 164 } else { | |
| 165 // rc = 0 means insufficient data has accumulated to fill a page, or an | |
| 166 // internal error has occurred. | |
| 167 rc = ogg_stream_pageout(&mOggStreamState, &mOggPage); | |
| 168 } | |
| 169 | |
| 170 if (rc) { | |
| 171 ProduceOggPage(aOutputBufs); | |
| 172 } | |
| 173 if (aFlags & ContainerWriter::FLUSH_NEEDED) { | |
| 174 mIsWritingComplete = true; | |
| 175 } | |
| 176 return (rc > 0) ? NS_OK : NS_ERROR_FAILURE; | |
| 177 } | |
| 178 | |
| 179 nsresult | |
| 180 OggWriter::SetMetadata(TrackMetadataBase* aMetadata) | |
| 181 { | |
| 182 MOZ_ASSERT(aMetadata); | |
| 183 if (aMetadata->GetKind() != TrackMetadataBase::METADATA_OPUS) { | |
| 184 LOG("wrong meta data type!"); | |
| 185 return NS_ERROR_FAILURE; | |
| 186 } | |
| 187 // Validate each field of METADATA | |
| 188 mMetadata = static_cast<OpusMetadata*>(aMetadata); | |
| 189 if (mMetadata->mIdHeader.Length() == 0) { | |
| 190 LOG("miss mIdHeader!"); | |
| 191 return NS_ERROR_FAILURE; | |
| 192 } | |
| 193 if (mMetadata->mCommentHeader.Length() == 0) { | |
| 194 LOG("miss mCommentHeader!"); | |
| 195 return NS_ERROR_FAILURE; | |
| 196 } | |
| 197 | |
| 198 return NS_OK; | |
| 199 } | |
| 200 | |
| 201 } |
