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/*
* mpeg.h: MPEG definitions
*
* See the main source file 'xineliboutput.c' for copyright information and
* how to reach the author.
*
* $Id: mpeg.h,v 1.8 2010-02-03 13:49:39 phintuka Exp $
*
*/
#ifndef XINELIBOUTPUT_MPEG_H_
#define XINELIBOUTPUT_MPEG_H_
#ifdef __cplusplus
extern "C" {
#endif
#define SC_PICTURE 0x00 /* picture atart code */
#define SC_SEQUENCE 0xb3 /* sequence header */
#define SC_SEQUENCE_END 0xb7
#if defined(__i386__) || defined(__x86_64__)
# define IS_SC_PICTURE(buf) (*(const uint32_t *)(buf) == 0x00010000U)
# define IS_SC_SEQUENCE(buf) (*(const uint32_t *)(buf) == 0xb3010000U)
#else
# define IS_SC_PICTURE(buf) ((buf)[0] == 0 && (buf)[1] == 0 && (buf)[2] == 1 && (buf)[3] == SC_PICTURE)
# define IS_SC_SEQUENCE(buf) ((buf)[0] == 0 && (buf)[1] == 0 && (buf)[2] == 1 && (buf)[3] == SC_SEQUENCE)
#endif
/* Picture types */
#define NO_PICTURE 0
#define I_FRAME 1
#define P_FRAME 2
#define B_FRAME 3
typedef struct mpeg_rational_s {
int num;
int den;
} mpeg_rational_t;
typedef struct video_size_s {
uint16_t width;
uint16_t height;
mpeg_rational_t pixel_aspect;
} video_size_t;
extern const char * const picture_type_str[];
/*
* input: start of MPEG video data (not PES)
*/
int mpeg2_get_picture_type(const uint8_t *buf, int len);
/*
* input: start of MPEG video data (not PES)
*/
int mpeg2_get_video_size(const uint8_t *buf, int len, video_size_t *size);
#ifdef __cplusplus
} /* extern "C" { */
#endif
#endif
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