decplugin.h

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// LiVES - decoder plugin header
// (c) G. Finch 2008 <salsaman@xs4all.nl,salsaman@gmail.com>
// released under the GNU GPL 3 or later
// see file COPYING or www.gnu.org for details


#ifndef __DECPLUGIN_H__
#define __DECPLUGIN_H__

#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */

#include <inttypes.h>
#include <sys/types.h>

// palettes, etc.
#ifdef HAVE_SYSTEM_WEED
#include <weed/weed-palettes.h>
#else
#include "../../../libweed/weed-palettes.h"
#endif

#if defined (IS_DARWIN) || defined (__FreeBSD__)
#ifndef lseek64
#define lseek64 lseek
#endif
#ifndef off64_t
#define off64_t off_t
#endif
#endif


typedef int boolean;
#undef TRUE
#undef FALSE
#define TRUE 1
#define FALSE 0

typedef enum {
  LIVES_INTERLACE_NONE=0,
  LIVES_INTERLACE_BOTTOM_FIRST=1,
  LIVES_INTERLACE_TOP_FIRST=2
} lives_interlace_t;

#define LIVES_SEEK_FAST (1<<0)

#define LIVES_SEEK_NEEDS_CALCULATION (1<<1)
#define LIVES_SEEK_QUALITY_LOSS (1<<2)


typedef struct {
  char *URI; 

  int nclips; 
  char container_name[512]; 

  char title[256];
  char author[256];
  char comment[256];

  int current_clip; 

  // video data
  int width;
  int height;
  int64_t nframes;
  lives_interlace_t interlace;

  int offs_x;
  int offs_y;
  int frame_width;  
  int frame_height;

  float par; 

  float video_start_time;

  float fps;

  int *palettes; 

  int current_palette;  

  int YUV_sampling;
  int YUV_clamping;
  int YUV_subspace;
  char video_name[512]; 

  /* audio data */
  int arate;
  int achans;
  int asamps;
  boolean asigned;
  boolean ainterleaf;
  char audio_name[512]; 

  int seek_flag; 

#define SYNC_HINT_AUDIO_TRIM_START (1<<0)
#define SYNC_HINT_AUDIO_PAD_START (1<<1)
#define SYNC_HINT_AUDIO_TRIM_END (1<<2)
#define SYNC_HINT_AUDIO_PAD_END (1<<3)

#define SYNC_HINT_VIDEO_PAD_START (1<<4)
#define SYNC_HINT_VIDEO_PAD_END (1<<5)

  int sync_hint;


  void *priv; 

} lives_clip_data_t;



// std functions
const char *version(void);



// should be threadsafe, and clip_data should be freed with clip_data_free() when no longer required

lives_clip_data_t *get_clip_data(const char *URI, lives_clip_data_t *);

boolean get_frame(const lives_clip_data_t *, int64_t frame, int *rowstrides, int height, void **pixel_data);

void clip_data_free(lives_clip_data_t *);




// opt fns
const char *module_check_init(void);

boolean set_palette(lives_clip_data_t *);

int64_t rip_audio(const lives_clip_data_t *, const char *fname, int64_t stframe, int64_t nframes, unsigned char **abuff);
void rip_audio_cleanup(const lives_clip_data_t *);

void module_unload(void);


// little-endian
#define get_le16int(p) (*(p+1)<<8 | *(p))
#define get_le32int(p) ((get_le16int(p+2)<<16) | get_le16int(p))
#define get_le64int(p) (int64_t)(((uint64_t)(get_le32int(p+4))<<32) | (uint64_t)(get_le32int(p)))


#define MK_FOURCC(a, b, c, d) ((a<<24)|(b<<16)|(c<<8)|d)


#define ABS(a) ((a)>=0.?(a):-(a))


enum LiVESMediaType {
  LIVES_MEDIA_TYPE_UNKNOWN=0,
  LIVES_MEDIA_TYPE_VIDEO,
  LIVES_MEDIA_TYPE_AUDIO,
  LIVES_MEDIA_TYPE_DATA
};



#ifdef __cplusplus

}
#endif /* __cplusplus */

#endif // #ifndef __DECPLUGIN_H__