Refactor audio and video decoder status into common file.

media/filters/opus_audio_decoder.cc

 // Copyright 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/opus_audio_decoder.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <cmath>
@@ skipping 178 matching lines @@
 void OpusAudioDecoder::DecodeBuffer(
     const scoped_refptr<DecoderBuffer>& input,
     const DecodeCB& decode_cb) {
   DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(!decode_cb.is_null());
   DCHECK(input.get());
 
   // Libopus does not buffer output. Decoding is complete when an end of stream
   // input buffer is received.
   if (input->end_of_stream()) {
-    decode_cb.Run(kOk);
+    decode_cb.Run(DecodeStatus::OK);
     return;
   }
 
   // Make sure we are notified if http://crbug.com/49709 returns.  Issue also
   // occurs with some damaged files.
   if (input->timestamp() == kNoTimestamp()) {
     DLOG(ERROR) << "Received a buffer without timestamps!";
-    decode_cb.Run(kDecodeError);
+    decode_cb.Run(DecodeStatus::DECODE_ERROR);
     return;
   }
 
   scoped_refptr<AudioBuffer> output_buffer;
 
   if (!Decode(input, &output_buffer)) {
-    decode_cb.Run(kDecodeError);
+    decode_cb.Run(DecodeStatus::DECODE_ERROR);
     return;
   }
 
   if (output_buffer.get()) {
     output_cb_.Run(output_buffer);
   }
 
-  decode_cb.Run(kOk);
+  decode_cb.Run(DecodeStatus::OK);
 }
 
 bool OpusAudioDecoder::ConfigureDecoder() {
   if (config_.codec() != kCodecOpus) {
     DVLOG(1) << "Codec must be kCodecOpus.";
     return false;
   }
 
   const int channel_count =
       ChannelLayoutToChannelCount(config_.channel_layout());
@@ skipping 126 matching lines @@
     output_buffer->get()->TrimEnd(trim_frames);
 
   // Handles discards and timestamping.  Discard the buffer if more data needed.
   if (!discard_helper_->ProcessBuffers(input, *output_buffer))
     *output_buffer = nullptr;
 
   return true;
 }
 
 }  // namespace media