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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_video_decoder.h" | 5 #include "media/filters/ffmpeg_video_decoder.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/bind.h" | 10 #include "base/bind.h" |
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| 47 std::string threads(cmd_line->GetSwitchValueASCII(switches::kVideoThreads)); | 47 std::string threads(cmd_line->GetSwitchValueASCII(switches::kVideoThreads)); |
| 48 if (threads.empty() || !base::StringToInt(threads, &decode_threads)) | 48 if (threads.empty() || !base::StringToInt(threads, &decode_threads)) |
| 49 return decode_threads; | 49 return decode_threads; |
| 50 | 50 |
| 51 decode_threads = std::max(decode_threads, 0); | 51 decode_threads = std::max(decode_threads, 0); |
| 52 decode_threads = std::min(decode_threads, kMaxDecodeThreads); | 52 decode_threads = std::min(decode_threads, kMaxDecodeThreads); |
| 53 return decode_threads; | 53 return decode_threads; |
| 54 } | 54 } |
| 55 | 55 |
| 56 FFmpegVideoDecoder::FFmpegVideoDecoder( | 56 FFmpegVideoDecoder::FFmpegVideoDecoder( |
| 57 const base::Callback<MessageLoop*()>& message_loop_cb) | 57 const base::Callback<MessageLoop*()>& message_loop_cb, |
| 58 Decryptor* decryptor) |
| 58 : message_loop_factory_cb_(message_loop_cb), | 59 : message_loop_factory_cb_(message_loop_cb), |
| 59 message_loop_(NULL), | 60 message_loop_(NULL), |
| 60 state_(kUninitialized), | 61 state_(kUninitialized), |
| 61 codec_context_(NULL), | 62 codec_context_(NULL), |
| 62 av_frame_(NULL), | 63 av_frame_(NULL), |
| 63 decryptor_(NULL) { | 64 decryptor_(decryptor) { |
| 64 } | 65 } |
| 65 | 66 |
| 66 int FFmpegVideoDecoder::GetVideoBuffer(AVCodecContext* codec_context, | 67 int FFmpegVideoDecoder::GetVideoBuffer(AVCodecContext* codec_context, |
| 67 AVFrame* frame) { | 68 AVFrame* frame) { |
| 68 // Don't use |codec_context_| here! With threaded decoding, | 69 // Don't use |codec_context_| here! With threaded decoding, |
| 69 // it will contain unsynchronized width/height/pix_fmt values, | 70 // it will contain unsynchronized width/height/pix_fmt values, |
| 70 // whereas |codec_context| contains the current threads's | 71 // whereas |codec_context| contains the current threads's |
| 71 // updated width/height/pix_fmt, which can change for adaptive | 72 // updated width/height/pix_fmt, which can change for adaptive |
| 72 // content. | 73 // content. |
| 73 VideoFrame::Format format = PixelFormatToVideoFormat(codec_context->pix_fmt); | 74 VideoFrame::Format format = PixelFormatToVideoFormat(codec_context->pix_fmt); |
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| 246 | 247 |
| 247 DoStop(); | 248 DoStop(); |
| 248 } | 249 } |
| 249 | 250 |
| 250 void FFmpegVideoDecoder::DoStop() { | 251 void FFmpegVideoDecoder::DoStop() { |
| 251 ReleaseFFmpegResources(); | 252 ReleaseFFmpegResources(); |
| 252 state_ = kUninitialized; | 253 state_ = kUninitialized; |
| 253 base::ResetAndReturn(&stop_cb_).Run(); | 254 base::ResetAndReturn(&stop_cb_).Run(); |
| 254 } | 255 } |
| 255 | 256 |
| 256 void FFmpegVideoDecoder::set_decryptor(Decryptor* decryptor) { | |
| 257 DCHECK_EQ(state_, kUninitialized); | |
| 258 decryptor_ = decryptor; | |
| 259 } | |
| 260 | |
| 261 FFmpegVideoDecoder::~FFmpegVideoDecoder() { | 257 FFmpegVideoDecoder::~FFmpegVideoDecoder() { |
| 262 ReleaseFFmpegResources(); | 258 ReleaseFFmpegResources(); |
| 263 } | 259 } |
| 264 | 260 |
| 265 void FFmpegVideoDecoder::DoRead(const ReadCB& read_cb) { | 261 void FFmpegVideoDecoder::DoRead(const ReadCB& read_cb) { |
| 266 DCHECK_EQ(MessageLoop::current(), message_loop_); | 262 DCHECK_EQ(MessageLoop::current(), message_loop_); |
| 267 DCHECK(!read_cb.is_null()); | 263 DCHECK(!read_cb.is_null()); |
| 268 CHECK(read_cb_.is_null()) << "Overlapping decodes are not supported."; | 264 CHECK(read_cb_.is_null()) << "Overlapping decodes are not supported."; |
| 269 | 265 |
| 270 // This can happen during shutdown after Stop() has been called. | 266 // This can happen during shutdown after Stop() has been called. |
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| 520 av_free(codec_context_); | 516 av_free(codec_context_); |
| 521 codec_context_ = NULL; | 517 codec_context_ = NULL; |
| 522 } | 518 } |
| 523 if (av_frame_) { | 519 if (av_frame_) { |
| 524 av_free(av_frame_); | 520 av_free(av_frame_); |
| 525 av_frame_ = NULL; | 521 av_frame_ = NULL; |
| 526 } | 522 } |
| 527 } | 523 } |
| 528 | 524 |
| 529 } // namespace media | 525 } // namespace media |
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