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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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/ffmpeg_glue.h" | 5 #include "media/filters/ffmpeg_glue.h" |
6 | 6 |
7 #include "base/lazy_instance.h" | 7 #include "base/lazy_instance.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/macros.h" | 9 #include "base/macros.h" |
10 #include "base/metrics/sparse_histogram.h" | 10 #include "base/metrics/sparse_histogram.h" |
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155 | 155 |
156 bool FFmpegGlue::OpenContext() { | 156 bool FFmpegGlue::OpenContext() { |
157 DCHECK(!open_called_) << "OpenContext() shouldn't be called twice."; | 157 DCHECK(!open_called_) << "OpenContext() shouldn't be called twice."; |
158 | 158 |
159 // If avformat_open_input() is called we have to take a slightly different | 159 // If avformat_open_input() is called we have to take a slightly different |
160 // destruction path to avoid double frees. | 160 // destruction path to avoid double frees. |
161 open_called_ = true; | 161 open_called_ = true; |
162 | 162 |
163 // Attempt to recognize the container by looking at the first few bytes of the | 163 // Attempt to recognize the container by looking at the first few bytes of the |
164 // stream. The stream position is left unchanged. | 164 // stream. The stream position is left unchanged. |
165 scoped_ptr<std::vector<uint8_t>> buffer(new std::vector<uint8_t>(8192)); | 165 std::unique_ptr<std::vector<uint8_t>> buffer(new std::vector<uint8_t>(8192)); |
166 | 166 |
167 int64_t pos = AVIOSeekOperation(avio_context_.get()->opaque, 0, SEEK_CUR); | 167 int64_t pos = AVIOSeekOperation(avio_context_.get()->opaque, 0, SEEK_CUR); |
168 AVIOSeekOperation(avio_context_.get()->opaque, 0, SEEK_SET); | 168 AVIOSeekOperation(avio_context_.get()->opaque, 0, SEEK_SET); |
169 int numRead = AVIOReadOperation( | 169 int numRead = AVIOReadOperation( |
170 avio_context_.get()->opaque, buffer.get()->data(), buffer.get()->size()); | 170 avio_context_.get()->opaque, buffer.get()->data(), buffer.get()->size()); |
171 AVIOSeekOperation(avio_context_.get()->opaque, pos, SEEK_SET); | 171 AVIOSeekOperation(avio_context_.get()->opaque, pos, SEEK_SET); |
172 if (numRead > 0) { | 172 if (numRead > 0) { |
173 // < 0 means Read failed | 173 // < 0 means Read failed |
174 container_names::MediaContainerName container = | 174 container_names::MediaContainerName container = |
175 container_names::DetermineContainer(buffer.get()->data(), numRead); | 175 container_names::DetermineContainer(buffer.get()->data(), numRead); |
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216 avcodec_close(stream->codec); | 216 avcodec_close(stream->codec); |
217 } | 217 } |
218 } | 218 } |
219 } | 219 } |
220 | 220 |
221 avformat_close_input(&format_context_); | 221 avformat_close_input(&format_context_); |
222 av_free(avio_context_->buffer); | 222 av_free(avio_context_->buffer); |
223 } | 223 } |
224 | 224 |
225 } // namespace media | 225 } // namespace media |
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