Mojify demuxers and allow running {Chunk/FFmpeg}Demuxer in a Utility Process

media/base/source_buffer.h

+// Copyright (c) 2017 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.
+
+#ifndef MEDIA_BASE_SOURCE_BUFFER_H_
+#define MEDIA_BASE_SOURCE_BUFFER_H_
+
+#include "base/memory/memory_pressure_listener.h"
+#include "media/base/demuxer.h"
+#include "media/base/demuxer_stream.h"
+#include "media/base/media_export.h"
+
+namespace media {
+
+class MEDIA_EXPORT SourceBuffer {
+ public:
+  enum Status {
+    kOk,              // ID added w/o error.
+    kNotSupported,    // Type specified is not supported.
+    kReachedIdLimit,  // Reached ID limit. We can't handle any more IDs.
+    kStatusMax = kReachedIdLimit
+  };
+
+  SourceBuffer();
+  virtual ~SourceBuffer();
+
+  virtual SourceBuffer::Status AddId(const std::string& id,
+                                     const std::string& type,
+                                     const std::string& codecs) = 0;
+  virtual bool AppendData(const std::string& id,
+                          const uint8_t* data,
+                          size_t length,
+                          base::TimeDelta append_window_start,
+                          base::TimeDelta append_window_end,
+                          base::TimeDelta* timestamp_offset) = 0;
+  virtual void SetTracksWatcher(
+      const std::string& id,
+      const Demuxer::MediaTracksUpdatedCB& tracks_updated_cb) = 0;
+  virtual void RemoveId(const std::string& id) = 0;
+  virtual Ranges<base::TimeDelta> GetBufferedRanges(
+      const std::string& id) const = 0;
+  virtual base::TimeDelta GetHighestPresentationTimestamp(
+      const std::string& id) const = 0;
+  virtual void ResetParserState(const std::string& id,
+                                base::TimeDelta append_window_start,
+                                base::TimeDelta append_window_end,
+                                base::TimeDelta* timestamp_offset) = 0;
+  virtual void Remove(const std::string& id,
+                      base::TimeDelta start,
+                      base::TimeDelta end) = 0;
+  virtual bool EvictCodedFrames(const std::string& id,
+                                base::TimeDelta currentMediaTime,
+                                size_t newDataSize) = 0;
+  virtual void OnMemoryPressure(
+      base::TimeDelta currentMediaTime,
+      base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level,
+      bool force_instant_gc) = 0;
+  virtual double GetDuration() = 0;
+  virtual double GetDuration_Locked() = 0;
+  virtual void SetDuration(double duration) = 0;
+  virtual bool IsParsingMediaSegment(const std::string& id) = 0;
+  virtual void SetSequenceMode(const std::string& id, bool sequence_mode) = 0;
+  virtual void SetGroupStartTimestampIfInSequenceMode(
+      const std::string& id,
+      base::TimeDelta timestamp_offset) = 0;
+
+  virtual void MarkEndOfStream(PipelineStatus status) = 0;
+  virtual void UnmarkEndOfStream() = 0;
+  virtual void Shutdown() = 0;
+  virtual void SetMemoryLimitsForTest(DemuxerStream::Type type,
+                                      size_t memory_limit) = 0;
+  virtual Ranges<base::TimeDelta> GetBufferedRanges() const = 0;
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_SOURCE_BUFFER_H_