sequenceheader.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2004 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card, but now handles other
// hardware as well.

// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef MPEG_SEQUENCEHEADER_H
#define MPEG_SEQUENCEHEADER_H
//------------------------------------------------------------------------------

#include "QuantMatrix.h"

#include <cstdlib>

//------------------------------------------------------------------------------

namespace mpeg {

//------------------------------------------------------------------------------

/**
 * A sequence header.
 */
class SequenceHeader
{
public:
    /**
     * Aspect ratios
     */
    typedef enum aspectRatio_t {
        // SAR is 1.0
        SAR_1_0,

        // DAR is 3:4
        DAR_3_4,

        // DAR is 16:9
        DAR_16_9,

        // DAR is 1:2.21
        DAR_1_221,

        // Unkown value
        AR_UNKNOWN
    };
    
    /**
     * Profiles.
     */
    typedef enum profile_t {
        // Simple
        PROFILE_SIMPLE,

        // Main
        PROFILE_MAIN,

        // SNR Scalable
        PROFILE_SNR_SCALABLE,
        
        // Spatially Scalable
        PROFILE_SPATIALLY_SCALABLE,

        // High
        PROFILE_HIGH,

        // Unknown value
        PROFILE_UNKOWN
    };
    
    /**
     * Levels
     */
    typedef enum level_t {
        // Low
        LEVEL_LOW,

        // Main
        LEVEL_MAIN,

        // High 1440
        LEVEL_HIGH_1440,

        // High
        LEVEL_HIGH,

        // Unknown level
        LEVEL_UNKNOWN
    };

    /**
     * Chroma formats.
     */
    typedef enum chromaFormat_t {
        // 4:2:0
        CHROMA_4_2_0,

        // 4:2:2
        CHROMA_4_2_2,

        // 4:4:4
        CHROMA_4_4_4,
        
        // Unknown
        CHROMA_UNKNOWN
    };

    /**
     * Horizontal size.
     */
    size_t horizontalSize;

    /**
     * Vertical size.
     */
    size_t verticalSize;

    /**
     * The aspect ratio.
     */
    aspectRatio_t aspectRatio;

    /**
     * Frame rate nominator.
     */
    size_t frameRateN;

    /**
     * Frame rate denominator.
     */
    size_t frameRateD;

    /**
     * The bit rate.
     */
    size_t bitRate;

    /**
     * The VBV buffer size.
     */
    size_t vbvBufferSize;

    /**
     * The quantization matrix
     */
    QuantMatrix quantMatrix;
    
    /**
     * Profile and level escape
     */
    bool profileAndLevelEscape;

    /**
     * The profile.
     */
    profile_t profile;

    /**
     * The level
     */
    level_t level;

    /**
     * Sequence is progressive.
     */
    bool progressive;

    /**
     * The chroma format.
     */
    chromaFormat_t chromaFormat;

    /**
     * Indicate if this is a low-delay sequence.
     */
    bool lowDelay;

    /**
     * Log the contents of the sequence header.
     */
    void log() const;
};

//------------------------------------------------------------------------------

} /* namespace mpeg */

//------------------------------------------------------------------------------
#endif // MPEG_SEQUENCEHEADER_H

// Local variables:
// mode: c++
// End: