Refactor audio and video decoder status into common file.

media/filters/ffmpeg_audio_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_audio_decoder.h"
 
 #include <stdint.h>
 
 #include "base/callback_helpers.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 174 matching lines @@
 }
 
 void FFmpegAudioDecoder::Decode(const scoped_refptr<DecoderBuffer>& buffer,
                                 const DecodeCB& decode_cb) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(!decode_cb.is_null());
   CHECK_NE(state_, kUninitialized);
   DecodeCB decode_cb_bound = BindToCurrentLoop(decode_cb);
 
   if (state_ == kError) {
-    decode_cb_bound.Run(kDecodeError);
+    decode_cb_bound.Run(DecoderStatus::DECODE_ERROR);
     return;
   }
 
   // Do nothing if decoding has finished.
   if (state_ == kDecodeFinished) {
-    decode_cb_bound.Run(kOk);
+    decode_cb_bound.Run(DecoderStatus::OK);
     return;
   }
 
   DecodeBuffer(buffer, decode_cb_bound);
 }
 
 void FFmpegAudioDecoder::Reset(const base::Closure& closure) {
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   avcodec_flush_buffers(codec_context_.get());
   state_ = kNormal;
   ResetTimestampState();
   task_runner_->PostTask(FROM_HERE, closure);
 }
 
 void FFmpegAudioDecoder::DecodeBuffer(
     const scoped_refptr<DecoderBuffer>& buffer,
     const DecodeCB& decode_cb) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_NE(state_, kUninitialized);
   DCHECK_NE(state_, kDecodeFinished);
   DCHECK_NE(state_, kError);
   DCHECK(buffer.get());
 
   // Make sure we are notified if http://crbug.com/49709 returns.  Issue also
   // occurs with some damaged files.
   if (!buffer->end_of_stream() && buffer->timestamp() == kNoTimestamp()) {
     DVLOG(1) << "Received a buffer without timestamps!";
-    decode_cb.Run(kDecodeError);
+    decode_cb.Run(DecoderStatus::DECODE_ERROR);
     return;
   }
 
   bool has_produced_frame;
   do {
     has_produced_frame = false;
     if (!FFmpegDecode(buffer, &has_produced_frame)) {
       state_ = kError;
-      decode_cb.Run(kDecodeError);
+      decode_cb.Run(DecoderStatus::DECODE_ERROR);
       return;
     }
     // Repeat to flush the decoder after receiving EOS buffer.
   } while (buffer->end_of_stream() && has_produced_frame);
 
   if (buffer->end_of_stream())
     state_ = kDecodeFinished;
 
-  decode_cb.Run(kOk);
+  decode_cb.Run(DecoderStatus::OK);
 }
 
 bool FFmpegAudioDecoder::FFmpegDecode(
     const scoped_refptr<DecoderBuffer>& buffer,
     bool* has_produced_frame) {
   DCHECK(!*has_produced_frame);
 
   AVPacket packet;
   av_init_packet(&packet);
   if (buffer->end_of_stream()) {
@@ skipping 161 matching lines @@
   return true;
 }
 
 void FFmpegAudioDecoder::ResetTimestampState() {
   discard_helper_.reset(new AudioDiscardHelper(config_.samples_per_second(),
                                                config_.codec_delay()));
   discard_helper_->Reset(config_.codec_delay());
 }
 
 }  // namespace media