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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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/filters/audio_file_reader.h" | 5 #include "media/filters/audio_file_reader.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
| 9 #include "base/string_util.h" | 9 #include "base/string_util.h" |
| 10 #include "base/time.h" | 10 #include "base/time.h" |
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| 44 } | 44 } |
| 45 | 45 |
| 46 bool AudioFileReader::Open() { | 46 bool AudioFileReader::Open() { |
| 47 // Add our data reader to the protocol list and get our unique key. | 47 // Add our data reader to the protocol list and get our unique key. |
| 48 std::string key = FFmpegGlue::GetInstance()->AddProtocol(protocol_); | 48 std::string key = FFmpegGlue::GetInstance()->AddProtocol(protocol_); |
| 49 | 49 |
| 50 // Open FFmpeg AVFormatContext. | 50 // Open FFmpeg AVFormatContext. |
| 51 DCHECK(!format_context_); | 51 DCHECK(!format_context_); |
| 52 AVFormatContext* context = NULL; | 52 AVFormatContext* context = NULL; |
| 53 | 53 |
| 54 int result = av_open_input_file(&context, key.c_str(), NULL, 0, NULL); | 54 int result = avformat_open_input(&context, key.c_str(), NULL, NULL); |
| 55 | 55 |
| 56 // Remove our data reader from protocol list since av_open_input_file() setup | 56 // Remove our data reader from protocol list since avformat_open_input() setup |
| 57 // the AVFormatContext with the data reader. | 57 // the AVFormatContext with the data reader. |
| 58 FFmpegGlue::GetInstance()->RemoveProtocol(protocol_); | 58 FFmpegGlue::GetInstance()->RemoveProtocol(protocol_); |
| 59 | 59 |
| 60 if (result) { | 60 if (result) { |
| 61 DLOG(WARNING) | 61 DLOG(WARNING) |
| 62 << "AudioFileReader::Open() : error in av_open_input_file() -" | 62 << "AudioFileReader::Open() : error in avformat_open_input() -" |
| 63 << " result: " << result; | 63 << " result: " << result; |
| 64 return false; | 64 return false; |
| 65 } | 65 } |
| 66 | 66 |
| 67 DCHECK(context); | 67 DCHECK(context); |
| 68 format_context_ = context; | 68 format_context_ = context; |
| 69 | 69 |
| 70 // Get the codec context. | 70 // Get the codec context. |
| 71 codec_context_ = NULL; | 71 codec_context_ = NULL; |
| 72 for (size_t i = 0; i < format_context_->nb_streams; ++i) { | 72 for (size_t i = 0; i < format_context_->nb_streams; ++i) { |
| 73 AVCodecContext* c = format_context_->streams[i]->codec; | 73 AVCodecContext* c = format_context_->streams[i]->codec; |
| 74 if (c->codec_type == AVMEDIA_TYPE_AUDIO) { | 74 if (c->codec_type == AVMEDIA_TYPE_AUDIO) { |
| 75 codec_context_ = c; | 75 codec_context_ = c; |
| 76 break; | 76 break; |
| 77 } | 77 } |
| 78 } | 78 } |
| 79 | 79 |
| 80 // Get the codec. | 80 // Get the codec. |
| 81 if (!codec_context_) | 81 if (!codec_context_) |
| 82 return false; | 82 return false; |
| 83 | 83 |
| 84 av_find_stream_info(format_context_); | 84 avformat_find_stream_info(format_context_, NULL); |
| 85 codec_ = avcodec_find_decoder(codec_context_->codec_id); | 85 codec_ = avcodec_find_decoder(codec_context_->codec_id); |
| 86 if (codec_) { | 86 if (codec_) { |
| 87 if ((result = avcodec_open(codec_context_, codec_)) < 0) { | 87 if ((result = avcodec_open2(codec_context_, codec_, NULL)) < 0) { |
| 88 DLOG(WARNING) << "AudioFileReader::Open() : could not open codec -" | 88 DLOG(WARNING) << "AudioFileReader::Open() : could not open codec -" |
| 89 << " result: " << result; | 89 << " result: " << result; |
| 90 return false; | 90 return false; |
| 91 } | 91 } |
| 92 | 92 |
| 93 if ((result = av_seek_frame(format_context_, 0, 0, 0)) < 0) { | 93 if ((result = av_seek_frame(format_context_, 0, 0, 0)) < 0) { |
| 94 DLOG(WARNING) << "AudioFileReader::Open() : could not seek frame -" | 94 DLOG(WARNING) << "AudioFileReader::Open() : could not seek frame -" |
| 95 << " result: " << result; | 95 << " result: " << result; |
| 96 return false; | 96 return false; |
| 97 } | 97 } |
| 98 } else { | 98 } else { |
| 99 DLOG(WARNING) << "AudioFileReader::Open() : could not find codec -" | 99 DLOG(WARNING) << "AudioFileReader::Open() : could not find codec -" |
| 100 << " result: " << result; | 100 << " result: " << result; |
| 101 return false; | 101 return false; |
| 102 } | 102 } |
| 103 | 103 |
| 104 return true; | 104 return true; |
| 105 } | 105 } |
| 106 | 106 |
| 107 void AudioFileReader::Close() { | 107 void AudioFileReader::Close() { |
| 108 if (codec_context_ && codec_) | 108 if (codec_context_ && codec_) |
| 109 avcodec_close(codec_context_); | 109 avcodec_close(codec_context_); |
| 110 | 110 |
| 111 codec_context_ = NULL; | 111 codec_context_ = NULL; |
| 112 codec_ = NULL; | 112 codec_ = NULL; |
| 113 | 113 |
| 114 if (format_context_) { | 114 if (format_context_) { |
| 115 av_close_input_file(format_context_); | 115 avformat_close_input(&format_context_); |
| 116 format_context_ = NULL; | 116 format_context_ = NULL; |
| 117 } | 117 } |
| 118 } | 118 } |
| 119 | 119 |
| 120 bool AudioFileReader::Read(const std::vector<float*>& audio_data, | 120 bool AudioFileReader::Read(const std::vector<float*>& audio_data, |
| 121 size_t number_of_frames) { | 121 size_t number_of_frames) { |
| 122 size_t channels = this->channels(); | 122 size_t channels = this->channels(); |
| 123 DCHECK_EQ(audio_data.size(), channels); | 123 DCHECK_EQ(audio_data.size(), channels); |
| 124 if (audio_data.size() != channels) | 124 if (audio_data.size() != channels) |
| 125 return false; | 125 return false; |
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| 150 | 150 |
| 151 if (result < 0) { | 151 if (result < 0) { |
| 152 DLOG(WARNING) | 152 DLOG(WARNING) |
| 153 << "AudioFileReader::Read() : error in avcodec_decode_audio3() -" | 153 << "AudioFileReader::Read() : error in avcodec_decode_audio3() -" |
| 154 << result; | 154 << result; |
| 155 return false; | 155 return false; |
| 156 } | 156 } |
| 157 | 157 |
| 158 // Determine the number of sample-frames we just decoded. | 158 // Determine the number of sample-frames we just decoded. |
| 159 size_t bytes_per_sample = | 159 size_t bytes_per_sample = |
| 160 av_get_bits_per_sample_fmt(codec_context_->sample_fmt) >> 3; | 160 av_get_bytes_per_sample(codec_context_->sample_fmt); |
| 161 size_t frames_read = out_size / (channels * bytes_per_sample); | 161 size_t frames_read = out_size / (channels * bytes_per_sample); |
| 162 | 162 |
| 163 // Truncate, if necessary, if the destination isn't big enough. | 163 // Truncate, if necessary, if the destination isn't big enough. |
| 164 if (current_frame + frames_read > number_of_frames) | 164 if (current_frame + frames_read > number_of_frames) |
| 165 frames_read = number_of_frames - current_frame; | 165 frames_read = number_of_frames - current_frame; |
| 166 | 166 |
| 167 // Deinterleave each channel and convert to 32bit floating-point | 167 // Deinterleave each channel and convert to 32bit floating-point |
| 168 // with nominal range -1.0 -> +1.0. | 168 // with nominal range -1.0 -> +1.0. |
| 169 for (size_t channel_index = 0; channel_index < channels; | 169 for (size_t channel_index = 0; channel_index < channels; |
| 170 ++channel_index) { | 170 ++channel_index) { |
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| 182 } | 182 } |
| 183 } | 183 } |
| 184 | 184 |
| 185 current_frame += frames_read; | 185 current_frame += frames_read; |
| 186 } | 186 } |
| 187 | 187 |
| 188 return true; | 188 return true; |
| 189 } | 189 } |
| 190 | 190 |
| 191 } // namespace media | 191 } // namespace media |
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