71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
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// Copyright (c) 2013 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MEDIA_BASE_STREAM_INFO_H_
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#define MEDIA_BASE_STREAM_INFO_H_
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#include <string>
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#include <vector>
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#include "base/memory/ref_counted.h"
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namespace media {
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enum StreamType {
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kStreamAudio,
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kStreamVideo,
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};
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class StreamInfo : public base::RefCountedThreadSafe<StreamInfo> {
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public:
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StreamInfo(StreamType stream_type,
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int track_id,
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int time_scale,
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const uint8* extra_data,
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size_t extra_data_size,
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bool is_encrypted);
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virtual ~StreamInfo();
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// Returns true if this object has appropriate configuration values, false
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// otherwise.
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virtual bool IsValidConfig() const = 0;
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// Returns a human-readable string describing |*this|.
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virtual std::string ToString();
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StreamType stream_type() const { return stream_type_; }
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int track_id() const { return track_id_; }
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int time_scale() const { return time_scale_; }
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bool is_encrypted() const { return is_encrypted_; }
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const uint8* extra_data() const {
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return extra_data_.empty() ? NULL : &extra_data_[0];
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}
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size_t extra_data_size() const {
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return extra_data_.size();
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}
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private:
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// Whether the stream is Audio or Video.
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StreamType stream_type_;
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int track_id_;
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int time_scale_;
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// Whether the stream is potentially encrypted.
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// Note that in a potentially encrypted stream, individual buffers
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// can be encrypted or not encrypted.
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bool is_encrypted_;
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// Optional byte data required for some audio/video decoders such as Vorbis
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// codebooks.
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std::vector<uint8> extra_data_;
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// Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
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// generated copy constructor and assignment operator. Since the extra data is
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// typically small, the performance impact is minimal.
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};
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} // namespace media
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#endif // MEDIA_BASE_STREAM_INFO_H_
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