<video> decode in hardware!

media/filters/ffmpeg_video_decoder.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/filters/ffmpeg_video_decoder.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
@@ skipping 46 matching lines @@
       av_frame_(NULL),
       frame_rate_numerator_(0),
       frame_rate_denominator_(0) {
 }
 
 FFmpegVideoDecoder::~FFmpegVideoDecoder() {
   ReleaseFFmpegResources();
 }
 
 void FFmpegVideoDecoder::Initialize(DemuxerStream* demuxer_stream,
-                                    const base::Closure& callback,
+                                    const PipelineStatusCB& callback,
                                     const StatisticsCallback& stats_callback) {
   if (MessageLoop::current() != message_loop_) {
     message_loop_->PostTask(FROM_HERE, base::Bind(
         &FFmpegVideoDecoder::Initialize, this,
         make_scoped_refptr(demuxer_stream), callback, stats_callback));
     return;
   }
 
   DCHECK(!demuxer_stream_);
 
   if (!demuxer_stream) {
-    host()->SetError(PIPELINE_ERROR_DECODE);
-    callback.Run();
+    callback.Run(PIPELINE_ERROR_DECODE);
     return;
   }
 
   demuxer_stream_ = demuxer_stream;
   statistics_callback_ = stats_callback;
 
   const VideoDecoderConfig& config = demuxer_stream->video_decoder_config();
 
   // TODO(scherkus): this check should go in PipelineImpl prior to creating
   // decoder objects.
   if (!config.IsValidConfig()) {
-    DLOG(ERROR) << "Invalid video stream -"
-                << " codec: " << config.codec()
-                << " format: " << config.format()
-                << " coded size: [" << config.coded_size().width()
-                << "," << config.coded_size().height() << "]"
-                << " visible rect: [" << config.visible_rect().x()
-                << "," << config.visible_rect().y()
-                << "," << config.visible_rect().width()
-                << "," << config.visible_rect().height() << "]"
-                << " natural size: [" << config.natural_size().width()
-                << "," << config.natural_size().height() << "]"
-                << " frame rate: " << config.frame_rate_numerator()
-                << "/" << config.frame_rate_denominator()
-                << " aspect ratio: " << config.aspect_ratio_numerator()
-                << "/" << config.aspect_ratio_denominator();
-
-    host()->SetError(PIPELINE_ERROR_DECODE);
-    callback.Run();
+    DLOG(ERROR) << "Invalid video stream - " << config.AsHumanReadableString();
+    callback.Run(PIPELINE_ERROR_DECODE);
     return;
   }
 
   // Initialize AVCodecContext structure.
   codec_context_ = avcodec_alloc_context();
   VideoDecoderConfigToAVCodecContext(config, codec_context_);
 
   // Enable motion vector search (potentially slow), strong deblocking filter
   // for damaged macroblocks, and set our error detection sensitivity.
   codec_context_->error_concealment = FF_EC_GUESS_MVS | FF_EC_DEBLOCK;
   codec_context_->error_recognition = FF_ER_CAREFUL;
   codec_context_->thread_count = GetThreadCount(codec_context_->codec_id);
 
   AVCodec* codec = avcodec_find_decoder(codec_context_->codec_id);
   if (!codec) {
-    host()->SetError(PIPELINE_ERROR_DECODE);
-    callback.Run();
+    callback.Run(PIPELINE_ERROR_DECODE);
     return;
   }
 
   if (avcodec_open(codec_context_, codec) < 0) {
-    host()->SetError(PIPELINE_ERROR_DECODE);
-    callback.Run();
+    callback.Run(PIPELINE_ERROR_DECODE);
     return;
   }
 
   // Success!
   state_ = kNormal;
   av_frame_ = avcodec_alloc_frame();
   pts_stream_.Initialize(GetFrameDuration(config));
   natural_size_ = config.natural_size();
   frame_rate_numerator_ = config.frame_rate_numerator();
   frame_rate_denominator_ = config.frame_rate_denominator();
-  callback.Run();
+  callback.Run(PIPELINE_OK);
 }
 
 void FFmpegVideoDecoder::Stop(const base::Closure& callback) {
   if (MessageLoop::current() != message_loop_) {
     message_loop_->PostTask(FROM_HERE, base::Bind(
         &FFmpegVideoDecoder::Stop, this, callback));
     return;
   }
 
   ReleaseFFmpegResources();
@@ skipping 280 matching lines @@
 scoped_refptr<VideoFrame> FFmpegVideoDecoder::AllocateVideoFrame() {
   VideoFrame::Format format = PixelFormatToVideoFormat(codec_context_->pix_fmt);
   size_t width = codec_context_->width;
   size_t height = codec_context_->height;
 
   return VideoFrame::CreateFrame(format, width, height,
                                  kNoTimestamp, kNoTimestamp);
 }
 
 }  // namespace media