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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef MEDIA_BASE_PIPELINE_STATUS_H_
      6 #define MEDIA_BASE_PIPELINE_STATUS_H_
      7 
      8 #include "base/callback.h"
      9 
     10 #include <string>
     11 
     12 namespace media {
     13 
     14 // Status states for pipeline.  All codes except PIPELINE_OK indicate errors.
     15 // Logged to UMA, so never reuse a value, always add new/greater ones!
     16 // TODO(vrk/scherkus): Trim the unused status codes. (crbug.com/126070)
     17 enum PipelineStatus {
     18   PIPELINE_OK = 0,
     19   PIPELINE_ERROR_URL_NOT_FOUND = 1,
     20   PIPELINE_ERROR_NETWORK = 2,
     21   PIPELINE_ERROR_DECODE = 3,
     22   PIPELINE_ERROR_DECRYPT = 4,
     23   PIPELINE_ERROR_ABORT = 5,
     24   PIPELINE_ERROR_INITIALIZATION_FAILED = 6,
     25   PIPELINE_ERROR_COULD_NOT_RENDER = 8,
     26   PIPELINE_ERROR_READ = 9,
     27   PIPELINE_ERROR_OPERATION_PENDING = 10,
     28   PIPELINE_ERROR_INVALID_STATE = 11,
     29   // Demuxer related errors.
     30   DEMUXER_ERROR_COULD_NOT_OPEN = 12,
     31   DEMUXER_ERROR_COULD_NOT_PARSE = 13,
     32   DEMUXER_ERROR_NO_SUPPORTED_STREAMS = 14,
     33   // Decoder related errors.
     34   DECODER_ERROR_NOT_SUPPORTED = 15,
     35   PIPELINE_STATUS_MAX,  // Must be greater than all other values logged.
     36 };
     37 
     38 typedef base::Callback<void(PipelineStatus)> PipelineStatusCB;
     39 
     40 // Wrap & return a callback around |cb| which reports its argument to UMA under
     41 // the requested |name|.
     42 PipelineStatusCB CreateUMAReportingPipelineCB(const std::string& name,
     43                                               const PipelineStatusCB& cb);
     44 
     45 // TODO(scherkus): this should be moved alongside host interface definitions.
     46 struct PipelineStatistics {
     47   PipelineStatistics()
     48       : audio_bytes_decoded(0),
     49         video_bytes_decoded(0),
     50         video_frames_decoded(0),
     51         video_frames_dropped(0) {
     52   }
     53 
     54   uint32 audio_bytes_decoded;  // Should be uint64?
     55   uint32 video_bytes_decoded;  // Should be uint64?
     56   uint32 video_frames_decoded;
     57   uint32 video_frames_dropped;
     58 };
     59 
     60 // Used for updating pipeline statistics.
     61 typedef base::Callback<void(const PipelineStatistics&)> StatisticsCB;
     62 
     63 }  // namespace media
     64 
     65 #endif  // MEDIA_BASE_PIPELINE_STATUS_H_
     66