80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
// 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_VIDEO_STREAM_INFO_H_
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#define MEDIA_BASE_VIDEO_STREAM_INFO_H_
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#include "media/base/stream_info.h"
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namespace media {
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enum VideoCodec {
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kUnknownVideoCodec = 0,
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kCodecH264,
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kCodecVC1,
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kCodecMPEG2,
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kCodecMPEG4,
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kCodecTheora,
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kCodecVP8,
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kCodecVP9,
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kNumVideoCodec
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};
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class VideoStreamInfo : 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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VideoStreamInfo(int track_id,
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uint32 time_scale,
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uint64 duration,
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VideoCodec codec,
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const std::string& codec_string,
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const std::string& language,
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uint16 width,
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uint16 height,
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uint8 nalu_length_size,
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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 ~VideoStreamInfo();
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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 OVERRIDE;
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// Returns a human-readable string describing |*this|.
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virtual std::string ToString() const OVERRIDE;
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VideoCodec codec() const { return codec_; }
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uint16 width() const { return width_; }
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uint16 height() const { return height_; }
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uint8 nalu_length_size() const { return nalu_length_size_; }
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// Returns the codec string. The parameters beyond codec are only used by
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// H.264 codec.
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static std::string GetCodecString(VideoCodec codec,
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uint8 profile,
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uint8 compatible_profiles,
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uint8 level);
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private:
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VideoCodec codec_;
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uint16 width_;
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uint16 height_;
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// Specifies the normalized size of the NAL unit length field. Can be 1, 2 or
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// 4 bytes, or 0 if the size if unknown or the stream is not a AVC stream
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// (H.264).
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uint8 nalu_length_size_;
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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_VIDEO_STREAM_INFO_H_
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