77 lines
2.1 KiB
C
77 lines
2.1 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_AUDIO_STREAM_INFO_H_
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#define MEDIA_BASE_AUDIO_STREAM_INFO_H_
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#include <vector>
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#include "media/base/stream_info.h"
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namespace media {
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enum AudioCodec {
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kUnknownAudioCodec = 0,
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kCodecAAC,
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kCodecMP3,
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kCodecPCM,
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kCodecVorbis,
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kCodecFLAC,
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kCodecAMR_NB,
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kCodecAMR_WB,
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kCodecPCM_MULAW,
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kCodecGSM_MS,
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kCodecPCM_S16BE,
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kCodecPCM_S24BE,
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kCodecOpus,
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kCodecEAC3,
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kNumAudioCodec
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};
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class AudioStreamInfo : public StreamInfo {
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public:
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// Constructs an initialized object. It is acceptable to pass in NULL for
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// |extra_data|, otherwise the memory is copied.
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AudioStreamInfo(int track_id,
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int time_scale,
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AudioCodec codec,
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int bytes_per_channel,
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int num_channels,
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int samples_per_second,
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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 ~AudioStreamInfo();
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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;
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// Returns a human-readable string describing |*this|.
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virtual std::string ToString();
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AudioCodec codec() const { return codec_; }
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int bits_per_channel() const { return bytes_per_channel_ * 8; }
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int bytes_per_channel() const { return bytes_per_channel_; }
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int num_channels() const { return num_channels_; }
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int samples_per_second() const { return samples_per_second_; }
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int bytes_per_frame() const { return num_channels_ * bytes_per_channel_; }
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private:
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AudioCodec codec_;
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int bytes_per_channel_;
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int num_channels_;
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int samples_per_second_;
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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_AUDIO_STREAM_INFO_H_
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