swfdec_decoder.h

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#ifndef __SWFDEC_DECODER_H__
#define __SWFDEC_DECODER_H__

#include <glib.h>
#include <zlib.h>

#include "swfdec_types.h"


#define SWF_COLOR_SCALE_FACTOR		(1/256.0)
#define SWF_TRANS_SCALE_FACTOR		(1/63356.0)
#define SWF_SCALE_FACTOR		(1/20.0)
#define SWF_TEXT_SCALE_FACTOR		(1/1024.0)

#define SWF_DEBUG(n,format...)	do{ \
	if((n)>=SWF_DEBUG_LEVEL)swf_debug(s,(n),format); \
}while(0)
#define SWF_DEBUG_LEVEL 0

enum {
	SWF_STATE_INIT1 = 0,
	SWF_STATE_INIT2,
	SWF_STATE_PARSETAG,
	SWF_STATE_EOF,
};

struct swfdec_decoder_struct {
	int version;
	int length;
	int width, height;
	double rate;
	int n_frames;
	char *buffer;
	int frame_number;

	void *sound_buffer;
	int sound_len;
	int sound_offset;

	int colorspace;
	int no_render;
	int debug;
	int compressed;

	/* End of legacy elements */

	char *input_data;
	int input_data_len;
	z_stream *z;

	int stride;
	int bytespp;
	void (*callback)(void *,int,int,ArtSVPRenderAAStep *,int);
	void (*compose_callback)(void *,int,int,ArtSVPRenderAAStep *,int);

	double scale_factor;
	double transform[6];

	/* where we are in the top-level state engine */
	int state;

	/* where we are in global parsing */
	bits_t parse;

	/* temporary state while parsing */
	bits_t b;

	/* defined objects */
	GList *objects;

	int tag;
	int tag_len;
	int (*func)(SwfdecDecoder *s);

	SwfdecObject *stream_sound_obj;

	/* rendering state */
	unsigned int bg_color;
	ArtIRect irect;
	ArtIRect drawrect;

	SwfdecSprite *main_sprite;
	SwfdecSprite *parse_sprite;

	SwfdecRender *render;

	double flatness;
	int disable_render;
	
	unsigned char *tmp_scanline;

	unsigned char *jpegtables;
	unsigned int jpegtables_len;

	GList *sound_buffers;
	GList *stream_sound_buffers;

	gboolean subpixel;

	int pixels_rendered;
};

SwfdecDecoder *swf_init(void);
SwfdecDecoder *swfdec_decoder_new(void);

int swf_addbits(SwfdecDecoder *s, unsigned char *bits, int len);
int swf_parse(SwfdecDecoder *s);
int swf_parse_header(SwfdecDecoder *s);
int swf_parse_tag(SwfdecDecoder *s);
int tag_func_ignore(SwfdecDecoder *s);

void swf_debug(SwfdecDecoder *s, int n, char *format, ...);


#endif