mm-video-v4l2/vidc/vdec/inc/mp4_utils.h

/*--------------------------------------------------------------------------
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      notice, this list of conditions and the following disclaimer in the
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      products derived from this software without specific prior written
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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--------------------------------------------------------------------------*/
#ifndef MP4_UTILS_H
#define MP4_UTILS_H
#include "OMX_Core.h"
#include "OMX_QCOMExtns.h"
typedef signed long long int64;
typedef unsigned int uint32;   /* Unsigned 32 bit value */
typedef unsigned short uint16;   /* Unsigned 16 bit value */
typedef unsigned char uint8;   /* Unsigned 8  bit value */

typedef int int32;   /* Signed 32 bit value */
typedef signed short int16;   /* Signed 16 bit value */
typedef signed char int8;   /* Signed 8  bit value */

typedef unsigned char byte;   /* Unsigned 8  bit value type. */
#define SIMPLE_PROFILE_LEVEL0            0x08
#define SIMPLE_PROFILE_LEVEL1            0x01
#define SIMPLE_PROFILE_LEVEL2            0x02
#define SIMPLE_PROFILE_LEVEL3            0x03
#define SIMPLE_PROFILE_LEVEL4A            0x04
#define SIMPLE_PROFILE_LEVEL5            0x05
#define SIMPLE_PROFILE_LEVEL6            0x06
#define SIMPLE_PROFILE_LEVEL0B           0x09

#define SIMPLE_SCALABLE_PROFILE_LEVEL0                  0x10
#define SIMPLE_SCALABLE_PROFILE_LEVEL1                  0x11
#define SIMPLE_SCALABLE_PROFILE_LEVEL2                  0x12

#define SIMPLE_SCALABLE_PROFILE_LEVEL0  0x10
#define SIMPLE_SCALABLE_PROFILE_LEVEL1  0x11
#define SIMPLE_SCALABLE_PROFILE_LEVEL2  0x12
#define ADVANCED_SIMPLE_PROFILE_LEVEL0  0xF0
#define ADVANCED_SIMPLE_PROFILE_LEVEL1  0xF1
#define ADVANCED_SIMPLE_PROFILE_LEVEL2  0xF2
#define ADVANCED_SIMPLE_PROFILE_LEVEL3  0xF3
#define ADVANCED_SIMPLE_PROFILE_LEVEL4  0xF4
#define ADVANCED_SIMPLE_PROFILE_LEVEL5  0xF5

#define VISUAL_OBJECT_SEQUENCE_START_CODE   0x000001B0
#define MP4ERROR_SUCCESS     0

#define VIDEO_OBJECT_LAYER_START_CODE_MASK  0xFFFFFFF0
#define VIDEO_OBJECT_LAYER_START_CODE       0x00000120
#define VOP_START_CODE_MASK                 0xFFFFFFFF
#define VOP_START_CODE                      0x000001B6
#define GOV_START_CODE                      0x000001B3
#define SHORT_HEADER_MASK                   0xFFFFFC00
#define SHORT_HEADER_START_MARKER           0x00008000
#define SHORT_HEADER_START_CODE             0x00008000
#define SPARK1_START_CODE                   0x00008400
#define MPEG4_SHAPE_RECTANGULAR               0x00
#define EXTENDED_PAR                        0xF
#define SHORT_VIDEO_START_MARKER         0x20
#define MP4_INVALID_VOL_PARAM   (0x0001)   // unsupported VOL parameter
#define MP4ERROR_UNSUPPORTED_UFEP                   -1068
#define MP4ERROR_UNSUPPORTED_SOURCE_FORMAT          -1069
#define MASK(x) (0xFFFFFFFF >> (32 - (x)))
#define VISUAL_OBJECT_TYPE_VIDEO_ID         0x1
#define VISUAL_OBJECT_START_CODE            0x000001B5
#define VIDEO_OBJECT_START_CODE_MASK        0xFFFFFFE0
#define VIDEO_OBJECT_START_CODE             0x00000100

#define RESERVED_OBJECT_TYPE                0x0
#define SIMPLE_OBJECT_TYPE                  0x1
#define SIMPLE_SCALABLE_OBJECT_TYPE         0x2
#define CORE_OBJECT_TYPE                    0x3
#define MAIN_OBJECT_TYPE                    0x4
#define N_BIT_OBJECT_TYPE                   0x5
#define BASIC_ANIMATED_2D_TEXTURE           0x6
#define ANIMATED_2D_MESH                    0x7
#define ADVANCED_SIMPLE                     0x11


#define SIMPLE_L1_MAX_VBVBUFFERSIZE 10  /* VBV Max Buffer size=10 (p. 498)  */
#define SIMPLE_L1_MAX_BITRATE       160 /* is is 64kpbs or 160 400bits/sec units */
#define SIMPLE_L2_MAX_VBVBUFFERSIZE 40  /* VBV Max Buffer size = 40 */
#define SIMPLE_L2_MAX_BITRATE       320 /* 320 400bps units = 128kpbs */
#define SIMPLE_L3_MAX_VBVBUFFERSIZE 40  /* VBV Max Buffer size = 40 */
#define SIMPLE_L3_MAX_BITRATE       960 /* 960 400bps units = 384kpbs */

/* The MP4 decoder currently supports Simple Profile@L3 */
#define MAX_VBVBUFFERSIZE (SIMPLE_L3_MAX_VBVBUFFERSIZE)
#define MAX_BITRATE       (SIMPLE_L3_MAX_BITRATE)

#define MAX_QUANTPRECISION 9
#define MIN_QUANTPRECISION 3

#define MP4_VGA_WIDTH             640
#define MP4_VGA_HEIGHT            480
#define MP4_WVGA_WIDTH            800
#define MP4_WVGA_HEIGHT           480
#define MP4_720P_WIDTH            1280
#define MP4_720P_HEIGHT           720

#define MP4_MAX_DECODE_WIDTH    MP4_720P_WIDTH
#define MP4_MAX_DECODE_HEIGHT   MP4_720P_HEIGHT

typedef struct {
    unsigned char *data;
    unsigned long int numBytes;
} mp4StreamType;

#define MAX_FRAMES_IN_CHUNK                 10
#define VOP_START_CODE                      0x000001B6
#define VOL_START_CODE                      0x000001B0

typedef enum VOPTYPE {
    NO_VOP = -1, // bitstream contains no VOP.
    MPEG4_I_VOP = 0,   // bitstream contains an MPEG4 I-VOP
    MPEG4_P_VOP = 1,   // bitstream contains an MPEG4 P-VOP
    MPEG4_B_VOP = 2,   // bitstream contains an MPEG4 B-VOP
    MPEG4_S_VOP = 3,   // bitstream contains an MPEG4 S-VOP
} VOP_TYPE;

typedef struct {
    uint32    timestamp_increment;
    uint32    offset;
    uint32    size;
    VOP_TYPE  vopType;
} mp4_frame_info_type;

class MP4_Utils
{
    private:
        struct posInfoType {
            uint8 *bytePtr;
            uint8 bitPos;
        };

        posInfoType m_posInfo;
        byte *m_dataBeginPtr;
        unsigned int vop_time_resolution;
        bool vop_time_found;
        uint16 m_SrcWidth, m_SrcHeight;   // Dimensions of the source clip
    public:
        MP4_Utils();
        ~MP4_Utils();
        int16 populateHeightNWidthFromShortHeader(mp4StreamType * psBits);
        bool parseHeader(mp4StreamType * psBits);
        static uint32 read_bit_field(posInfoType * posPtr, uint32 size);
        bool is_notcodec_vop(unsigned char *pbuffer, unsigned int len);
};
#endif