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150 lines
5.3 KiB
C
150 lines
5.3 KiB
C
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#ifndef __GST_GETBITS_H__
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#define __GST_GETBITS_H__
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#include <stdio.h>
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// getbits is critical, we need to forcibly disable DEBUG
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#define GST_DEBUG_FORCE_DISABLE
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#include <gst/gst.h>
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/* disabled for now */
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#undef HAVE_LIBMMX
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#ifdef HAVE_LIBMMX
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#include <mmx.h>
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#endif /* HAVE_LIBMMX */
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#ifdef HAVE_LIBSSE
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#include <sse.h>
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#endif /* HAVE_LIBSSE */
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#define swab32(x) GUINT32_FROM_BE(x)
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typedef struct _gst_getbits_t gst_getbits_t;
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typedef void (*GstGetbitsCallback) (gst_getbits_t *gb, void *data);
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/* breaks in structure show alignment on quadword boundaries */
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/* FIXME: need to find out how to force GCC to align this to octwords */
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struct _gst_getbits_t {
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unsigned char *ptr;
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unsigned long *longptr;
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unsigned char *endptr;
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unsigned long length;
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long bits;
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unsigned long dword;
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unsigned long temp;
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GstGetbitsCallback callback;
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void *data;
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unsigned long (*get1bit)(gst_getbits_t *gb, unsigned long bits);
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unsigned long (*getbits)(gst_getbits_t *gb, unsigned long bits);
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unsigned long (*getbits_fast)(gst_getbits_t *gb, unsigned long bits);
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unsigned long (*getbyte)(gst_getbits_t *gb, unsigned long bits);
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unsigned long (*show1bit)(gst_getbits_t *gb, unsigned long bits);
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unsigned long (*showbits)(gst_getbits_t *gb, unsigned long bits);
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void (*flushbits)(gst_getbits_t *gb, unsigned long bits);
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void (*backbits)(gst_getbits_t *gb, unsigned long bits);
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#ifdef HAVE_LIBMMX
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mmx_t qword; /* qword */
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#endif /* HAVE_LIBMMX */
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#ifdef HAVE_LIBSSE
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sse_t oword; /* oword */
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#endif /* HAVE_LIBSSE */
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};
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#ifdef GST_GETBITS_INLINE
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#include "gstgetbits_inl.h"
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#else
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void gst_getbits_init(gst_getbits_t *gb, GstGetbitsCallback callback, void *data);
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void gst_getbits_newbuf(gst_getbits_t *gb, unsigned char *buffer, unsigned long len);
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#define gst_getbits_bitoffset(gb) \
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( \
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(-(gb)->bits)&0x7 \
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)
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#define gst_getbits_align_byte(gb)
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#define gst_getbits_bufferpos(gb) ((gb)->ptr)
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#define gst_getbits_bytesleft(gb) ((gb)->endptr - (gb)->ptr)
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#define gst_getbits_bitsleft(gb) (((gb)->endptr - (gb)->ptr)*8 - ((-(gb)->bits)&0x7))
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#define gst_get1bit(gb) (((gb)->get1bit)(gb, 1))
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#define gst_getbitsX(gb,bits) (((gb)->getbits)(gb,bits))
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#define gst_getbits_fastX(gb,bits) (((gb)->getbits_fast)(gb,bits))
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#define gst_show1bit(gb,bits) (((gb)->show1bit)(gb,bits))
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#define gst_showbitsX(gb,bits) (((gb)->showbits)(gb,bits))
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#define gst_flushbitsX(gb,bits) (((gb)->flushbits)(gb,bits))
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#define gst_backbitsX(gb,bits) (((gb)->backbits)(gb,bits))
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#define gst_getbyte(gb) (((gb)->getbyte)(gb,8))
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#define gst_getbits_fastn(gb,n) gst_getbits_fastX(gb, n)
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#define gst_getbitsn(gb,n) gst_getbitsX(gb, n)
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#define gst_getbits1(gb) gst_get1bit(gb)
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#define gst_getbits2(gb) gst_getbits_fastX(gb, 2)
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#define gst_getbits3(gb) gst_getbits_fastX(gb, 3)
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#define gst_getbits4(gb) gst_getbits_fastX(gb, 4)
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#define gst_getbits5(gb) gst_getbits_fastX(gb, 5)
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#define gst_getbits6(gb) gst_getbits_fastX(gb, 6)
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#define gst_getbits7(gb) gst_getbits_fastX(gb, 7)
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#define gst_getbits8(gb) gst_getbits_fastX(gb, 8)
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#define gst_getbits9(gb) gst_getbits_fastX(gb, 9)
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#define gst_getbits10(gb) gst_getbitsX(gb, 10)
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#define gst_getbits11(gb) gst_getbitsX(gb, 11)
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#define gst_getbits12(gb) gst_getbitsX(gb, 12)
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#define gst_getbits13(gb) gst_getbitsX(gb, 13)
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#define gst_getbits14(gb) gst_getbitsX(gb, 14)
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#define gst_getbits15(gb) gst_getbitsX(gb, 15)
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#define gst_getbits16(gb) gst_getbitsX(gb, 16)
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#define gst_getbits17(gb) gst_getbitsX(gb, 17)
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#define gst_getbits18(gb) gst_getbitsX(gb, 18)
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#define gst_getbits19(gb) gst_getbitsX(gb, 19)
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#define gst_getbits20(gb) gst_getbitsX(gb, 20)
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#define gst_getbits21(gb) gst_getbitsX(gb, 21)
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#define gst_getbits22(gb) gst_getbitsX(gb, 22)
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#define gst_getbits23(gb) gst_getbitsX(gb, 23)
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#define gst_showbitsn(gb,n) gst_showbitsX(gb, n)
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#define gst_showbits1(gb) gst_show1bit(gb, 1)
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#define gst_showbits2(gb) gst_showbitsX(gb, 2)
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#define gst_showbits3(gb) gst_showbitsX(gb, 3)
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#define gst_showbits4(gb) gst_showbitsX(gb, 4)
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#define gst_showbits5(gb) gst_showbitsX(gb, 5)
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#define gst_showbits6(gb) gst_showbitsX(gb, 6)
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#define gst_showbits7(gb) gst_showbitsX(gb, 7)
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#define gst_showbits8(gb) gst_showbitsX(gb, 8)
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#define gst_showbits9(gb) gst_showbitsX(gb, 9)
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#define gst_showbits10(gb) gst_showbitsX(gb, 10)
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#define gst_showbits11(gb) gst_showbitsX(gb, 11)
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#define gst_showbits12(gb) gst_showbitsX(gb, 12)
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#define gst_showbits13(gb) gst_showbitsX(gb, 13)
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#define gst_showbits14(gb) gst_showbitsX(gb, 14)
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#define gst_showbits15(gb) gst_showbitsX(gb, 15)
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#define gst_showbits16(gb) gst_showbitsX(gb, 16)
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#define gst_showbits17(gb) gst_showbitsX(gb, 17)
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#define gst_showbits18(gb) gst_showbitsX(gb, 18)
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#define gst_showbits19(gb) gst_showbitsX(gb, 19)
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#define gst_showbits20(gb) gst_showbitsX(gb, 20)
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#define gst_showbits21(gb) gst_showbitsX(gb, 21)
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#define gst_showbits22(gb) gst_showbitsX(gb, 22)
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#define gst_showbits23(gb) gst_showbitsX(gb, 23)
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#define gst_showbits24(gb) gst_showbitsX(gb, 24)
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#define gst_showbits32(gb) gst_showbitsX(gb, 32)
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#define gst_flushbitsn(gb,n) gst_flushbitsX(gb, n)
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#define gst_flushbits32(gb) gst_flushbitsX(gb, 32)
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#define gst_backbitsn(gb,n) gst_backbitsX(gb, n)
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#define gst_backbits24(gb) gst_backbitsX(gb, 24)
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#endif
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#endif /* __GST_GETBITS_H__ */
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