Introducing DecoderBuffer and general Buffer cleanup.

media/filters/ffmpeg_video_decoder.cc

 // Copyright (c) 2012 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/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 190 matching lines @@
 
 
 void FFmpegVideoDecoder::ReadFromDemuxerStream() {
   DCHECK_NE(state_, kUninitialized);
   DCHECK_NE(state_, kDecodeFinished);
   DCHECK(!read_cb_.is_null());
 
   demuxer_stream_->Read(base::Bind(&FFmpegVideoDecoder::DecodeBuffer, this));
 }
 
-void FFmpegVideoDecoder::DecodeBuffer(const scoped_refptr<Buffer>& buffer) {
+void FFmpegVideoDecoder::DecodeBuffer(
+    const scoped_refptr<DecoderBuffer>& buffer) {
   // TODO(scherkus): fix FFmpegDemuxerStream::Read() to not execute our read
   // callback on the same execution stack so we can get rid of forced task post.
   message_loop_->PostTask(FROM_HERE, base::Bind(
       &FFmpegVideoDecoder::DoDecodeBuffer, this, buffer));
 }
 
-void FFmpegVideoDecoder::DoDecodeBuffer(const scoped_refptr<Buffer>& buffer) {
+void FFmpegVideoDecoder::DoDecodeBuffer(
+    const scoped_refptr<DecoderBuffer>& buffer) {
   DCHECK_EQ(MessageLoop::current(), message_loop_);
   DCHECK_NE(state_, kUninitialized);
   DCHECK_NE(state_, kDecodeFinished);
   DCHECK(!read_cb_.is_null());
 
   if (!reset_cb_.is_null()) {
     DeliverFrame(NULL);
     DoReset();
     return;
   }
@@ skipping 26 matching lines @@
   // kFlushCodec -> kDecodeFinished:
   //     When avcodec_decode_video2() returns 0 data or errors out.
   // (any state) -> kNormal:
   //     Any time Reset() is called.
 
   // Transition to kFlushCodec on the first end of stream buffer.
   if (state_ == kNormal && buffer->IsEndOfStream()) {
     state_ = kFlushCodec;
   }
 
-  scoped_refptr<Buffer> unencrypted_buffer = buffer;
+  scoped_refptr<DecoderBuffer> unencrypted_buffer = buffer;
   if (buffer->GetDecryptConfig() && buffer->GetDataSize()) {
     unencrypted_buffer = decryptor_.Decrypt(buffer);
     if (!unencrypted_buffer || !unencrypted_buffer->GetDataSize()) {
       state_ = kDecodeFinished;
       base::ResetAndReturn(&read_cb_).Run(kDecryptError, NULL);
       return;
     }
   }
 
   scoped_refptr<VideoFrame> video_frame;
@@ skipping 20 matching lines @@
     }
 
     ReadFromDemuxerStream();
     return;
   }
 
   DeliverFrame(video_frame);
 }
 
 bool FFmpegVideoDecoder::Decode(
-    const scoped_refptr<Buffer>& buffer,
+    const scoped_refptr<DecoderBuffer>& buffer,
     scoped_refptr<VideoFrame>* video_frame) {
   DCHECK(video_frame);
 
   // Create a packet for input data.
   // Due to FFmpeg API changes we no longer have const read-only pointers.
   AVPacket packet;
   av_init_packet(&packet);
   packet.data = const_cast<uint8*>(buffer->GetData());
   packet.size = buffer->GetDataSize();
 
@@ skipping 102 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