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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "media/formats/mpeg/mpeg_audio_stream_parser_base.h" | 5 #include "media/formats/mpeg/mpeg_audio_stream_parser_base.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/callback_helpers.h" | 8 #include "base/callback_helpers.h" |
| 9 #include "base/message_loop/message_loop.h" | 9 #include "base/message_loop/message_loop.h" |
| 10 #include "media/base/buffers.h" | 10 #include "media/base/buffers.h" |
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| 55 MPEGAudioStreamParserBase::~MPEGAudioStreamParserBase() {} | 55 MPEGAudioStreamParserBase::~MPEGAudioStreamParserBase() {} |
| 56 | 56 |
| 57 void MPEGAudioStreamParserBase::Init( | 57 void MPEGAudioStreamParserBase::Init( |
| 58 const InitCB& init_cb, | 58 const InitCB& init_cb, |
| 59 const NewConfigCB& config_cb, | 59 const NewConfigCB& config_cb, |
| 60 const NewBuffersCB& new_buffers_cb, | 60 const NewBuffersCB& new_buffers_cb, |
| 61 bool ignore_text_tracks, | 61 bool ignore_text_tracks, |
| 62 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, | 62 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, |
| 63 const NewMediaSegmentCB& new_segment_cb, | 63 const NewMediaSegmentCB& new_segment_cb, |
| 64 const base::Closure& end_of_segment_cb, | 64 const base::Closure& end_of_segment_cb, |
| 65 const LogCB& log_cb) { | 65 const scoped_refptr<MediaLog>& media_log) { |
| 66 DVLOG(1) << __FUNCTION__; | 66 DVLOG(1) << __FUNCTION__; |
| 67 DCHECK_EQ(state_, UNINITIALIZED); | 67 DCHECK_EQ(state_, UNINITIALIZED); |
| 68 init_cb_ = init_cb; | 68 init_cb_ = init_cb; |
| 69 config_cb_ = config_cb; | 69 config_cb_ = config_cb; |
| 70 new_buffers_cb_ = new_buffers_cb; | 70 new_buffers_cb_ = new_buffers_cb; |
| 71 new_segment_cb_ = new_segment_cb; | 71 new_segment_cb_ = new_segment_cb; |
| 72 end_of_segment_cb_ = end_of_segment_cb; | 72 end_of_segment_cb_ = end_of_segment_cb; |
| 73 log_cb_ = log_cb; | 73 media_log_ = media_log; |
| 74 | 74 |
| 75 ChangeState(INITIALIZED); | 75 ChangeState(INITIALIZED); |
| 76 } | 76 } |
| 77 | 77 |
| 78 void MPEGAudioStreamParserBase::Flush() { | 78 void MPEGAudioStreamParserBase::Flush() { |
| 79 DVLOG(1) << __FUNCTION__; | 79 DVLOG(1) << __FUNCTION__; |
| 80 DCHECK_NE(state_, UNINITIALIZED); | 80 DCHECK_NE(state_, UNINITIALIZED); |
| 81 queue_.Reset(); | 81 queue_.Reset(); |
| 82 timestamp_helper_->SetBaseTimestamp(base::TimeDelta()); | 82 timestamp_helper_->SetBaseTimestamp(base::TimeDelta()); |
| 83 in_media_segment_ = false; | 83 in_media_segment_ = false; |
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| 255 if (size < 4) | 255 if (size < 4) |
| 256 return 0; | 256 return 0; |
| 257 | 257 |
| 258 if (memcmp("ICY ", data, 4)) | 258 if (memcmp("ICY ", data, 4)) |
| 259 return -1; | 259 return -1; |
| 260 | 260 |
| 261 int locate_size = std::min(size, kMaxIcecastHeaderSize); | 261 int locate_size = std::min(size, kMaxIcecastHeaderSize); |
| 262 int offset = LocateEndOfHeaders(data, locate_size, 4); | 262 int offset = LocateEndOfHeaders(data, locate_size, 4); |
| 263 if (offset < 0) { | 263 if (offset < 0) { |
| 264 if (locate_size == kMaxIcecastHeaderSize) { | 264 if (locate_size == kMaxIcecastHeaderSize) { |
| 265 MEDIA_LOG(ERROR, log_cb_) << "Icecast header is too large."; | 265 MEDIA_LOG(ERROR, media_log_) << "Icecast header is too large."; |
| 266 return -1; | 266 return -1; |
| 267 } | 267 } |
| 268 | 268 |
| 269 return 0; | 269 return 0; |
| 270 } | 270 } |
| 271 | 271 |
| 272 return offset; | 272 return offset; |
| 273 } | 273 } |
| 274 | 274 |
| 275 int MPEGAudioStreamParserBase::ParseID3v1(const uint8* data, int size) { | 275 int MPEGAudioStreamParserBase::ParseID3v1(const uint8* data, int size) { |
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| 316 // expose it as a metadata text track. | 316 // expose it as a metadata text track. |
| 317 return actual_tag_size; | 317 return actual_tag_size; |
| 318 } | 318 } |
| 319 | 319 |
| 320 bool MPEGAudioStreamParserBase::ParseSyncSafeInt(BitReader* reader, | 320 bool MPEGAudioStreamParserBase::ParseSyncSafeInt(BitReader* reader, |
| 321 int32* value) { | 321 int32* value) { |
| 322 *value = 0; | 322 *value = 0; |
| 323 for (int i = 0; i < 4; ++i) { | 323 for (int i = 0; i < 4; ++i) { |
| 324 uint8 tmp; | 324 uint8 tmp; |
| 325 if (!reader->ReadBits(1, &tmp) || tmp != 0) { | 325 if (!reader->ReadBits(1, &tmp) || tmp != 0) { |
| 326 MEDIA_LOG(ERROR, log_cb_) << "ID3 syncsafe integer byte MSb is not 0!"; | 326 MEDIA_LOG(ERROR, media_log_) << "ID3 syncsafe integer byte MSb is not 0!"; |
| 327 return false; | 327 return false; |
| 328 } | 328 } |
| 329 | 329 |
| 330 if (!reader->ReadBits(7, &tmp)) | 330 if (!reader->ReadBits(7, &tmp)) |
| 331 return false; | 331 return false; |
| 332 | 332 |
| 333 *value <<= 7; | 333 *value <<= 7; |
| 334 *value += tmp; | 334 *value += tmp; |
| 335 } | 335 } |
| 336 | 336 |
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| 411 if (end_of_segment) { | 411 if (end_of_segment) { |
| 412 in_media_segment_ = false; | 412 in_media_segment_ = false; |
| 413 end_of_segment_cb_.Run(); | 413 end_of_segment_cb_.Run(); |
| 414 } | 414 } |
| 415 | 415 |
| 416 timestamp_helper_->SetBaseTimestamp(base::TimeDelta()); | 416 timestamp_helper_->SetBaseTimestamp(base::TimeDelta()); |
| 417 return true; | 417 return true; |
| 418 } | 418 } |
| 419 | 419 |
| 420 } // namespace media | 420 } // namespace media |
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