Migrate Pipeline & PipelineImpl to PipelineStatusCB.

media/filters/ffmpeg_demuxer.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 "base/callback.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "base/string_util.h"
@@ skipping 313 matching lines @@
     data_source_->set_host(filter_host);
   if (max_duration_.InMicroseconds() >= 0)
     host()->SetDuration(max_duration_);
   if (read_position_ > 0)
     host()->SetCurrentReadPosition(read_position_);
   if (deferred_status_ != PIPELINE_OK)
     host()->SetError(deferred_status_);
 }
 
 void FFmpegDemuxer::Initialize(DataSource* data_source,
-                               PipelineStatusCallback* callback) {
+                               const PipelineStatusCB& callback) {
   message_loop_->PostTask(
       FROM_HERE,
       NewRunnableMethod(this,
                         &FFmpegDemuxer::InitializeTask,
                         make_scoped_refptr(data_source),
                         callback));
 }
 
 scoped_refptr<DemuxerStream> FFmpegDemuxer::GetStream(
     DemuxerStream::Type type) {
@@ skipping 74 matching lines @@
   DCHECK(data_source_);
 
   return data_source_->IsStreaming();
 }
 
 MessageLoop* FFmpegDemuxer::message_loop() {
   return message_loop_;
 }
 
 void FFmpegDemuxer::InitializeTask(DataSource* data_source,
-                                   PipelineStatusCallback* callback) {
+                                   const PipelineStatusCB& callback) {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
-  scoped_ptr<PipelineStatusCallback> callback_deleter(callback);
 
   data_source_ = data_source;
   if (host())
     data_source_->set_host(host());
 
   // Add ourself to Protocol list and get our unique key.
   std::string key = FFmpegGlue::GetInstance()->AddProtocol(this);
 
   // Open FFmpeg AVFormatContext.
   DCHECK(!format_context_);
   AVFormatContext* context = NULL;
   int result = av_open_input_file(&context, key.c_str(), NULL, 0, NULL);
 
   // Remove ourself from protocol list.
   FFmpegGlue::GetInstance()->RemoveProtocol(this);
 
   if (result < 0) {
-    callback->Run(DEMUXER_ERROR_COULD_NOT_OPEN);
+    callback.Run(DEMUXER_ERROR_COULD_NOT_OPEN);
     return;
   }
 
   DCHECK(context);
   format_context_ = context;
 
   // Fully initialize AVFormatContext by parsing the stream a little.
   result = av_find_stream_info(format_context_);
   if (result < 0) {
-    callback->Run(DEMUXER_ERROR_COULD_NOT_PARSE);
+    callback.Run(DEMUXER_ERROR_COULD_NOT_PARSE);
     return;
   }
 
   // Create demuxer streams for all supported streams.
   streams_.resize(DemuxerStream::NUM_TYPES);
   base::TimeDelta max_duration;
   const bool kDemuxerIsWebm = !strcmp("webm", format_context_->iformat->name);
   bool no_supported_streams = true;
   for (size_t i = 0; i < format_context_->nb_streams; ++i) {
     AVCodecContext* codec_context = format_context_->streams[i]->codec;
@@ skipping 20 matching lines @@
           if (start_time_ == kNoTimestamp || first_dts < start_time_)
             start_time_ = first_dts;
         }
       }
       packet_streams_.push_back(demuxer_stream);
     } else {
       packet_streams_.push_back(NULL);
     }
   }
   if (no_supported_streams) {
-    callback->Run(DEMUXER_ERROR_NO_SUPPORTED_STREAMS);
+    callback.Run(DEMUXER_ERROR_NO_SUPPORTED_STREAMS);
     return;
   }
   if (format_context_->duration != static_cast<int64_t>(AV_NOPTS_VALUE)) {
     // If there is a duration value in the container use that to find the
     // maximum between it and the duration from A/V streams.
     const AVRational av_time_base = {1, AV_TIME_BASE};
     max_duration =
         std::max(max_duration,
                  ConvertFromTimeBase(av_time_base, format_context_->duration));
   } else {
     // If the duration is not a valid value. Assume that this is a live stream
     // and we set duration to the maximum int64 number to represent infinity.
     max_duration = base::TimeDelta::FromMicroseconds(
         Limits::kMaxTimeInMicroseconds);
   }
 
   // Some demuxers, like WAV, do not put timestamps on their frames. We
   // assume the the start time is 0.
   if (start_time_ == kNoTimestamp)
     start_time_ = base::TimeDelta();
 
   // Good to go: set the duration and notify we're done initializing.
   if (host())
     host()->SetDuration(max_duration);
   max_duration_ = max_duration;
-  callback->Run(PIPELINE_OK);
+  callback.Run(PIPELINE_OK);
 }
 
 void FFmpegDemuxer::SeekTask(base::TimeDelta time, const FilterStatusCB& cb) {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
 
   // TODO(scherkus): remove this by separating Seek() from Flush() from
   // Preroll() states (i.e., the implicit Seek(0) should really be a Preroll()).
   if (first_seek_hack_) {
     first_seek_hack_ = false;
 
@@ skipping 143 matching lines @@
   read_event_.Wait();
   return last_read_bytes_;
 }
 
 void FFmpegDemuxer::SignalReadCompleted(size_t size) {
   last_read_bytes_ = size;
   read_event_.Signal();
 }
 
 }  // namespace media