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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 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/base/filter_host.h" | 5 #include "media/base/filter_host.h" |
| 6 #include "media/filters/audio_renderer_base.h" | 6 #include "media/filters/audio_renderer_base.h" |
| 7 | 7 |
| 8 namespace media { | 8 namespace media { |
| 9 | 9 |
| 10 // The maximum size of the queue, which also acts as the number of initial reads | 10 // The maximum size of the queue, which also acts as the number of initial reads |
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| 87 AutoLock auto_lock(lock_); | 87 AutoLock auto_lock(lock_); |
| 88 // Loop until the buffer has been filled. | 88 // Loop until the buffer has been filled. |
| 89 while (len > 0) { | 89 while (len > 0) { |
| 90 if (queue_.empty()) { | 90 if (queue_.empty()) { |
| 91 // TODO(scherkus): consider blocking here until more data arrives. | 91 // TODO(scherkus): consider blocking here until more data arrives. |
| 92 break; | 92 break; |
| 93 } | 93 } |
| 94 Buffer* buffer = queue_.front(); | 94 Buffer* buffer = queue_.front(); |
| 95 | 95 |
| 96 // Determine how much to copy. | 96 // Determine how much to copy. |
| 97 const char* data = buffer->GetData() + data_offset_; | 97 const uint8* data = buffer->GetData() + data_offset_; |
| 98 size_t data_len = buffer->GetDataSize() - data_offset_; | 98 size_t data_len = buffer->GetDataSize() - data_offset_; |
| 99 data_len = std::min(len, data_len); | 99 data_len = std::min(len, data_len); |
| 100 | 100 |
| 101 // Copy into buffer. | 101 // Copy into buffer. |
| 102 memcpy(dest, data, data_len); | 102 memcpy(dest, data, data_len); |
| 103 len -= data_len; | 103 len -= data_len; |
| 104 dest += data_len; | 104 dest += data_len; |
| 105 data_offset_ += data_len; | 105 data_offset_ += data_len; |
| 106 result += data_len; | 106 result += data_len; |
| 107 | 107 |
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| 145 // TODO(scherkus): might be handy to support NULL parameters. | 145 // TODO(scherkus): might be handy to support NULL parameters. |
| 146 std::string mime_type; | 146 std::string mime_type; |
| 147 return media_format->GetAsString(MediaFormat::kMimeType, &mime_type) && | 147 return media_format->GetAsString(MediaFormat::kMimeType, &mime_type) && |
| 148 media_format->GetAsInteger(MediaFormat::kChannels, channels_out) && | 148 media_format->GetAsInteger(MediaFormat::kChannels, channels_out) && |
| 149 media_format->GetAsInteger(MediaFormat::kSampleRate, sample_rate_out) && | 149 media_format->GetAsInteger(MediaFormat::kSampleRate, sample_rate_out) && |
| 150 media_format->GetAsInteger(MediaFormat::kSampleBits, sample_bits_out) && | 150 media_format->GetAsInteger(MediaFormat::kSampleBits, sample_bits_out) && |
| 151 mime_type.compare(mime_type::kUncompressedAudio) == 0; | 151 mime_type.compare(mime_type::kUncompressedAudio) == 0; |
| 152 } | 152 } |
| 153 | 153 |
| 154 } // namespace media | 154 } // namespace media |
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