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configure.ac: Remove getbits library. Nothing uses it, and it should be in something like liboil if someone did want...

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Original commit message from CVS:
* configure.ac: Remove getbits library.  Nothing uses it, and
it should be in something like liboil if someone did want
to use it.
* libs/gst/Makefile.am:
* libs/gst/getbits/Makefile.am:
* libs/gst/getbits/gbtest.c:
* libs/gst/getbits/getbits.c:
* libs/gst/getbits/getbits.h:
* libs/gst/getbits/gstgetbits_generic.c:
* libs/gst/getbits/gstgetbits_i386.s:
* libs/gst/getbits/gstgetbits_inl.h:
This commit is contained in:
David Schleef 2005-09-15 05:48:30 +00:00
parent e245175fa3
commit 1f27d90839
10 changed files with 15 additions and 1044 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
ChangeLog
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@ -1,3 +1,17 @@
2005-09-14 David Schleef <ds@schleef.org>
* configure.ac: Remove getbits library. Nothing uses it, and
it should be in something like liboil if someone did want
to use it.
* libs/gst/Makefile.am:
* libs/gst/getbits/Makefile.am:
* libs/gst/getbits/gbtest.c:
* libs/gst/getbits/getbits.c:
* libs/gst/getbits/getbits.h:
* libs/gst/getbits/gstgetbits_generic.c:
* libs/gst/getbits/gstgetbits_i386.s:
* libs/gst/getbits/gstgetbits_inl.h:
2005-09-14 David Schleef <ds@schleef.org>
* gst/Makefile.am: Dist glib-compat.h

1
configure.ac
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@ -643,7 +643,6 @@ libs/Makefile
libs/gst/Makefile
libs/gst/controller/Makefile
libs/gst/dataprotocol/Makefile
libs/gst/getbits/Makefile
po/Makefile.in
check/Makefile
tests/Makefile

2
libs/gst/Makefile.am
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@ -1 +1 @@
SUBDIRS = controller dataprotocol getbits
SUBDIRS = controller dataprotocol

20
libs/gst/getbits/Makefile.am
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@ -1,20 +0,0 @@
plugin_LTLIBRARIES = libgstgetbits.la
if HAVE_CPU_I386
GSTARCH_SRCS = gstgetbits_i386.s
else
GSTARCH_SRCS =
endif
libgstgetbitsincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/getbits
libgstgetbitsinclude_HEADERS = getbits.h
noinst_HEADERS = gstgetbits_inl.h
libgstgetbits_la_SOURCES = getbits.c gstgetbits_inl.h gstgetbits_generic.c $(GSTARCH_SRCS)
EXTRA_libgstgetbits_la_SOURCES = gstgetbits_i386.s
libgstgetbits_la_CFLAGS = $(GST_OBJ_CFLAGS) -funroll-all-loops -finline-functions -ffast-math
libgstgetbits_la_LDFLAGS = $(GST_OBJ_LIBS) $(GST_PLUGIN_LDFLAGS)
# check_PROGRAMS = gbtest

100
libs/gst/getbits/gbtest.c
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@ -1,100 +0,0 @@
#include <stdlib.h>
#include "gstgetbits.h"
char *
print_bits (unsigned long bits, int size)
{
char *ret = (char *) malloc (size + 1);
int i;
ret[size] = 0;
for (i = 0; i < size; i++) {
if (bits & (1 << i))
ret[(size - 1) - i] = '1';
else
ret[(size - 1) - i] = '0';
}
return ret;
}
static unsigned char testbuffer[] = {
0x11, 0x22, 0x44, 0x88, 0xCC, 0xEE, 0xFF, 0x11
};
void
empty (gst_getbits_t * gb, void *data)
{
printf ("buffer empty\n");
gst_getbits_newbuf (gb, (unsigned char *) testbuffer, 7);
}
int
main (int argc, char *argv[])
{
gst_getbits_t gb;
int i, j;
int bits;
gst_getbits_init (&gb, NULL, NULL);
gst_getbits_newbuf (&gb, (unsigned char *) testbuffer, 7);
for (i = 0; i < 7; i++) {
for (j = 0; j < 8; j++) {
printf ("%lu", gst_getbits2 (&gb));
gst_backbitsn (&gb, 1);
}
printf (" = %01x\n", testbuffer[i]);
}
gst_getbits_newbuf (&gb, (unsigned char *) testbuffer, 7);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000011 %lu\n", bits, gb.bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000022 %lu\n", bits, gb.bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000044 %lu\n", bits, gb.bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000088 %lu\n", bits, gb.bits);
bits = gst_getbits6 (&gb);
printf ("%08x <-> 00000033 %lu\n", bits, gb.bits);
gst_backbitsn (&gb, 16);
bits = gst_getbits10 (&gb);
printf ("%08x <-> 00000088 \n", bits);
gst_getbits_newbuf (&gb, (unsigned char *) testbuffer, 7);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000011 \n", bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000022 \n", bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000044 \n", bits);
bits = gst_getbits6 (&gb);
printf ("%08x <-> 00000022 \n", bits);
gst_backbitsn (&gb, 19);
bits = gst_getbits19 (&gb);
printf ("%08x <-> 00009122 \n", bits);
bits = gst_getbits10 (&gb);
printf ("%08x <-> 000000cc \n", bits);
gst_backbitsn (&gb, 8);
gst_backbitsn (&gb, 19);
gst_backbitsn (&gb, 8);
bits = gst_getbits19 (&gb);
printf ("%08x <-> 00012244 \n", bits);
bits = gst_getbits8 (&gb);
printf ("%08x <-> 00000088 \n", bits);
return 0;
}

242
libs/gst/getbits/getbits.c
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@ -1,242 +0,0 @@
#include "config.h"
#include "getbits.h"
/* Defined in gstgetbits_i386.s */
extern unsigned long _gst_get1bit_i386 (gst_getbits_t * gb, unsigned long bits);
extern unsigned long _gst_getbits_i386 (gst_getbits_t * gb, unsigned long bits);
extern unsigned long _gst_getbits_fast_i386 (gst_getbits_t * gb,
unsigned long bits);
extern unsigned long _gst_showbits_i386 (gst_getbits_t * gb,
unsigned long bits);
extern void _gst_flushbits_i386 (gst_getbits_t * gb, unsigned long bits);
extern void _gst_getbits_back_i386 (gst_getbits_t * gb, unsigned long bits);
/* Defined in gstgetbits_generic.c */
extern unsigned long _gst_getbits_int_cb (gst_getbits_t * gb,
unsigned long bits);
extern unsigned long _gst_get1bit_int (gst_getbits_t * gb, unsigned long bits);
extern unsigned long _gst_getbits_int (gst_getbits_t * gb, unsigned long bits);
extern unsigned long _gst_getbits_fast_int (gst_getbits_t * gb,
unsigned long bits);
extern unsigned long _gst_showbits_int (gst_getbits_t * gb, unsigned long bits);
extern void _gst_flushbits_int (gst_getbits_t * gb, unsigned long bits);
extern void _gst_getbits_back_int (gst_getbits_t * gb, unsigned long bits);
unsigned long gst_getbits_nBitMask[] = {
0x00000000, 0x80000000, 0xc0000000, 0xe0000000,
0xf0000000, 0xf8000000, 0xfc000000, 0xfe000000,
0xff000000, 0xff800000, 0xffc00000, 0xffe00000,
0xfff00000, 0xfff80000, 0xfffc0000, 0xfffe0000,
0xffff0000, 0xffff8000, 0xffffc000, 0xffffe000,
0xfffff000, 0xfffff800, 0xfffffc00, 0xfffffe00,
0xffffff00, 0xffffff80, 0xffffffc0, 0xffffffe0,
0xfffffff0, 0xfffffff8, 0xfffffffc, 0xfffffffe
};
unsigned long _getbits_masks[] = {
0x00000000,
0x00000001, 0x00000003, 0x00000007, 0x0000000f,
0x0000001f, 0x0000003f, 0x0000007f, 0x000000ff,
0x000001ff, 0x000003ff, 0x000007ff, 0x00000fff,
0x00001fff, 0x00003fff, 0x00007fff, 0x0000ffff,
0x0001ffff, 0x0003ffff, 0x0007ffff, 0x000fffff,
0x001fffff, 0x003fffff, 0x007fffff, 0x00ffffff,
0x01ffffff, 0x03ffffff, 0x07ffffff, 0x0fffffff,
0x1fffffff, 0x3fffffff, 0x7fffffff, 0xffffffff,
};
#ifdef unused
unsigned long _getbits_64_minus_index[] = {
64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46,
45, 44, 43, 42, 41,
40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22,
21, 20, 19, 18, 17,
16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
};
/* this routine taken from Intel AppNote AP-527:
"Using MMX[tm] Instructions to Get Bits From a Data Stream"
written in C with libmmx to *closely* mimic Intel's ASM implementation
this isn't as cycle-efficient, due to the simple fact that I must call
emms() at the end. all state must be kept in *gb, not in registers */
unsigned long
_gst_getbits_mmx (gst_getbits_t * gb, unsigned long bits)
{
signed long remaining;
unsigned long result;
/* NOTE: this is a code-size optimization Intel seems to have missed!
according to the MMX Programmer's Reference Manual, Chapter 5,
neither movd nor movq have any effect on the flags. that means you
can put them before the sub and jl in their code, which I've done
symbolically in this C code. gcc is probably going to lose horribly,
I'll do an inline asm version later. I've a point to prove ;-) */
/* find the right shift value, put it in mm3 */
movd_m2r (_getbits_64_minus_index[bits], mm3);
/* load the current quadword into mm0 */
movq_m2r (gb->qword, mm0);
/* copy it to mm2 */
movq_r2r (mm0, mm2);
remaining = gb->bits - bits;
if (remaining <= 0) {
unsigned long dword1, dword2;
/* shift the pointer by 64 bits (8 bytes) */
gb->ptr += 8;
/* add 64 to bits remaining, to bring it positive */
remaining += 64;
/* grab the first 32 bits from the buffer and swap them around */
dword1 = swab32 (*(gb->ptr - 8));
/* grab the second 32 bits, swap */
dword2 = swab32 (*(gb->ptr - 4));
/* put second dword in mm4 */
movd_m2r (dword2, mm4);
/* shift mm2 over to make room for new bits */
psrlq_r2r (mm3, mm2);
/* put first dword in mm1 */
movd_m2r (dword1, mm1);
/* shift second dword up 32 bits */
psrlq_i2r (32, mm4);
/* put the shift counter in mm3 */
movd_m2r (remaining, mm3);
/* combine the swapped data in mm4 */
por_r2r (mm1, mm4);
/* save off the bits in mm4 to mm0 */
movq_r2r (mm4, mm0);
/* get the new low-order bits in mm4, shifted by 'mm3' */
psrlq_r2r (mm3, mm4);
/* save off new remaining bits */
gb->bits = remaining;
/* combine bits into mm2 */
por_r2r (mm2, mm4);
/* save off the result */
movd_r2m (mm2, result);
/* get rid of the bits we just read */
psllq_r2r (mm1, mm0);
/* save off mm0 */
movq_r2m (mm0, gb->qword);
/* finished with MMX */
emms ();
/* we have what we came for */
return (result);
} else {
/* load the number of bits requested into mm1 */
movd_m2r (bits, mm1);
/* shift the quadword in mm2 by 'mm3' bits */
psrlq_r2r (mm3, mm2);
/* update the number of valid bits */
gb->bits = remaining;
/* save off the remaining bits */
movd_r2m (mm2, result);
/* discard those bits in mm0 */
psllq_r2r (mm1, mm0);
/* save off mm0 */
movq_r2m (mm0, gb->qword);
/* finished with MMX */
emms ();
/* we have what we came for */
return (result);
}
}
#endif /* HAVE_LIBMMX */
unsigned long
_gst_getbyte (gst_getbits_t * gb, unsigned long bits)
{
return *gb->ptr++;
}
/* initialize the getbits structure with the proper getbits func */
void
gst_getbits_init (gst_getbits_t * gb, GstGetbitsCallback callback, void *data)
{
gb->ptr = NULL;
gb->bits = 0;
gb->callback = callback;
gb->data = data;
#ifdef unused
if (1) {
gb->getbits = _gst_getbits_mmx;
/* gb->backbits = _gst_getbits_back_mmx; */
/* gb->backbytes = _gst_getbits_byteback_mmx; */
/* printf("gstgetbits: using MMX optimized versions\n"); */
} else
#endif /* HAVE_LIBMMX */
{
if (gb->callback) {
gb->getbits = _gst_getbits_int_cb;
gb->showbits = _gst_showbits_int;
gb->flushbits = _gst_flushbits_int;
gb->backbits = _gst_getbits_back_int;
/* printf("gstgetbits: using callback versions\n"); */
} else {
#ifdef HAVE_CPU_I386
gb->get1bit = _gst_get1bit_i386;
gb->getbits = _gst_getbits_i386;
gb->getbits_fast = _gst_getbits_fast_i386;
gb->getbyte = _gst_getbyte;
gb->show1bit = _gst_showbits_i386;
gb->showbits = _gst_showbits_i386;
gb->flushbits = _gst_flushbits_i386;
gb->backbits = _gst_getbits_back_i386;
/* printf("gstgetbits: using i386 optimized versions\n"); */
#else
gb->get1bit = _gst_get1bit_int;
gb->getbits = _gst_getbits_int;
gb->getbits_fast = _gst_getbits_fast_int;
gb->getbyte = _gst_getbyte;
gb->show1bit = _gst_showbits_int;
gb->showbits = _gst_showbits_int;
gb->flushbits = _gst_flushbits_int;
gb->backbits = _gst_getbits_back_int;
/* printf("gstgetbits: using normal versions\n"); */
#endif
}
}
}
/* set up the getbits structure with a new buffer */
void
gst_getbits_newbuf (gst_getbits_t * gb, unsigned char *buffer,
unsigned long len)
{
gb->ptr = buffer;
gb->endptr = buffer + len;
gb->bits = 0;
#ifdef unused
/* gb->qword = 0; */
#endif /* HAVE_LIBMMX */
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gstgetbits",
"Accelerated routines for getting bits from a data stream",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)

131
libs/gst/getbits/getbits.h
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@ -1,131 +0,0 @@
#ifndef __GST_GETBITS_H__
#define __GST_GETBITS_H__
#include <stdio.h>
/* getbits is critical, we need to forcibly disable DEBUG */
#define GST_DEBUG_FORCE_DISABLE
#include <gst/gst.h>
#define swab32(x) GUINT32_FROM_BE(x)
typedef struct _gst_getbits_t gst_getbits_t;
typedef void (*GstGetbitsCallback) (gst_getbits_t *gb, void *data);
/* breaks in structure show alignment on quadword boundaries */
/* FIXME: need to find out how to force GCC to align this to octwords */
struct _gst_getbits_t {
unsigned char *ptr;
unsigned long *longptr;
unsigned char *endptr;
unsigned long length;
long bits;
unsigned long dword;
unsigned long temp;
GstGetbitsCallback callback;
void *data;
unsigned long (*get1bit)(gst_getbits_t *gb, unsigned long bits);
unsigned long (*getbits)(gst_getbits_t *gb, unsigned long bits);
unsigned long (*getbits_fast)(gst_getbits_t *gb, unsigned long bits);
unsigned long (*getbyte)(gst_getbits_t *gb, unsigned long bits);
unsigned long (*show1bit)(gst_getbits_t *gb, unsigned long bits);
unsigned long (*showbits)(gst_getbits_t *gb, unsigned long bits);
void (*flushbits)(gst_getbits_t *gb, unsigned long bits);
void (*backbits)(gst_getbits_t *gb, unsigned long bits);
};
#ifdef GST_GETBITS_INLINE
#include "gstgetbits_inl.h"
#else
void gst_getbits_init(gst_getbits_t *gb, GstGetbitsCallback callback, void *data);
void gst_getbits_newbuf(gst_getbits_t *gb, unsigned char *buffer, unsigned long len);
#define gst_getbits_bitoffset(gb) \
( \
(-(gb)->bits)&0x7 \
)
#define gst_getbits_align_byte(gb)
#define gst_getbits_bufferpos(gb) ((gb)->ptr)
#define gst_getbits_bytesleft(gb) ((gb)->endptr - (gb)->ptr)
#define gst_getbits_bitsleft(gb) (((gb)->endptr - (gb)->ptr)*8 - ((-(gb)->bits)&0x7))
#define gst_get1bit(gb) (((gb)->get1bit)(gb, 1))
#define gst_getbitsX(gb,bits) (((gb)->getbits)(gb,bits))
#define gst_getbits_fastX(gb,bits) (((gb)->getbits_fast)(gb,bits))
#define gst_show1bit(gb,bits) (((gb)->show1bit)(gb,bits))
#define gst_showbitsX(gb,bits) (((gb)->showbits)(gb,bits))
#define gst_flushbitsX(gb,bits) (((gb)->flushbits)(gb,bits))
#define gst_backbitsX(gb,bits) (((gb)->backbits)(gb,bits))
#define gst_getbyte(gb) (((gb)->getbyte)(gb,8))
#define gst_getbits_fastn(gb,n) gst_getbits_fastX(gb, n)
#define gst_getbitsn(gb,n) gst_getbitsX(gb, n)
#define gst_getbits1(gb) gst_get1bit(gb)
#define gst_getbits2(gb) gst_getbits_fastX(gb, 2)
#define gst_getbits3(gb) gst_getbits_fastX(gb, 3)
#define gst_getbits4(gb) gst_getbits_fastX(gb, 4)
#define gst_getbits5(gb) gst_getbits_fastX(gb, 5)
#define gst_getbits6(gb) gst_getbits_fastX(gb, 6)
#define gst_getbits7(gb) gst_getbits_fastX(gb, 7)
#define gst_getbits8(gb) gst_getbits_fastX(gb, 8)
#define gst_getbits9(gb) gst_getbits_fastX(gb, 9)
#define gst_getbits10(gb) gst_getbitsX(gb, 10)
#define gst_getbits11(gb) gst_getbitsX(gb, 11)
#define gst_getbits12(gb) gst_getbitsX(gb, 12)
#define gst_getbits13(gb) gst_getbitsX(gb, 13)
#define gst_getbits14(gb) gst_getbitsX(gb, 14)
#define gst_getbits15(gb) gst_getbitsX(gb, 15)
#define gst_getbits16(gb) gst_getbitsX(gb, 16)
#define gst_getbits17(gb) gst_getbitsX(gb, 17)
#define gst_getbits18(gb) gst_getbitsX(gb, 18)
#define gst_getbits19(gb) gst_getbitsX(gb, 19)
#define gst_getbits20(gb) gst_getbitsX(gb, 20)
#define gst_getbits21(gb) gst_getbitsX(gb, 21)
#define gst_getbits22(gb) gst_getbitsX(gb, 22)
#define gst_getbits23(gb) gst_getbitsX(gb, 23)
#define gst_showbitsn(gb,n) gst_showbitsX(gb, n)
#define gst_showbits1(gb) gst_show1bit(gb, 1)
#define gst_showbits2(gb) gst_showbitsX(gb, 2)
#define gst_showbits3(gb) gst_showbitsX(gb, 3)
#define gst_showbits4(gb) gst_showbitsX(gb, 4)
#define gst_showbits5(gb) gst_showbitsX(gb, 5)
#define gst_showbits6(gb) gst_showbitsX(gb, 6)
#define gst_showbits7(gb) gst_showbitsX(gb, 7)
#define gst_showbits8(gb) gst_showbitsX(gb, 8)
#define gst_showbits9(gb) gst_showbitsX(gb, 9)
#define gst_showbits10(gb) gst_showbitsX(gb, 10)
#define gst_showbits11(gb) gst_showbitsX(gb, 11)
#define gst_showbits12(gb) gst_showbitsX(gb, 12)
#define gst_showbits13(gb) gst_showbitsX(gb, 13)
#define gst_showbits14(gb) gst_showbitsX(gb, 14)
#define gst_showbits15(gb) gst_showbitsX(gb, 15)
#define gst_showbits16(gb) gst_showbitsX(gb, 16)
#define gst_showbits17(gb) gst_showbitsX(gb, 17)
#define gst_showbits18(gb) gst_showbitsX(gb, 18)
#define gst_showbits19(gb) gst_showbitsX(gb, 19)
#define gst_showbits20(gb) gst_showbitsX(gb, 20)
#define gst_showbits21(gb) gst_showbitsX(gb, 21)
#define gst_showbits22(gb) gst_showbitsX(gb, 22)
#define gst_showbits23(gb) gst_showbitsX(gb, 23)
#define gst_showbits24(gb) gst_showbitsX(gb, 24)
#define gst_showbits32(gb) gst_showbitsX(gb, 32)
#define gst_flushbitsn(gb,n) gst_flushbitsX(gb, n)
#define gst_flushbits32(gb) gst_flushbitsX(gb, 32)
#define gst_backbitsn(gb,n) gst_backbitsX(gb, n)
#define gst_backbits24(gb) gst_backbitsX(gb, 24)
#endif
#endif /* __GST_GETBITS_H__ */

132
libs/gst/getbits/gstgetbits_generic.c
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@ -1,132 +0,0 @@
#include "getbits.h"
unsigned long _gst_getbits_int_cb (gst_getbits_t * gb, unsigned long bits);
unsigned long _gst_get1bit_int (gst_getbits_t * gb, unsigned long bits);
unsigned long _gst_getbits_int (gst_getbits_t * gb, unsigned long bits);
unsigned long _gst_getbits_fast_int (gst_getbits_t * gb, unsigned long bits);
unsigned long _gst_showbits_int (gst_getbits_t * gb, unsigned long bits);
void _gst_flushbits_int (gst_getbits_t * gb, unsigned long bits);
void _gst_getbits_back_int (gst_getbits_t * gb, unsigned long bits);
unsigned long
_gst_getbits_int_cb (gst_getbits_t * gb, unsigned long bits)
{
int result;
int bitsleft;
/*printf("gst_getbits%lu %ld %p %08x\n", bits, gb->bits, gb->ptr, gb->dword); */
if (!bits)
return 0;
gb->bits -= bits;
result = gb->dword >> (32 - bits);
if (gb->bits < 0) {
gb->ptr += 4;
bitsleft = (gb->endptr - gb->ptr) * 8;
bits = -gb->bits;
gb->bits += (bitsleft > 32 ? 32 : bitsleft);
if (gb->endptr <= gb->ptr) {
(gb->callback) (gb, gb->data);
gb->bits -= bits;
}
gb->dword = swab32 (*((unsigned long *) (gb->ptr)));
result |= (gb->dword >> (32 - bits));
}
gb->dword <<= bits;
return result;
}
unsigned long
_gst_get1bit_int (gst_getbits_t * gb, unsigned long bits)
{
unsigned char rval;
rval = *gb->ptr << gb->bits;
gb->bits++;
gb->ptr += (gb->bits >> 3);
gb->bits &= 0x7;
GST_DEBUG ("getbits%ld, %08x", bits, rval);
return rval >> 7;
}
unsigned long
_gst_getbits_int (gst_getbits_t * gb, unsigned long bits)
{
unsigned long rval;
if (bits == 0)
return 0;
rval = swab32 (*((unsigned long *) (gb->ptr)));
rval <<= gb->bits;
gb->bits += bits;
rval >>= (32 - bits);
gb->ptr += (gb->bits >> 3);
gb->bits &= 0x7;
GST_DEBUG ("getbits%ld, %08lx", bits, rval);
return rval;
}
unsigned long
_gst_getbits_fast_int (gst_getbits_t * gb, unsigned long bits)
{
unsigned long rval;
rval = (unsigned char) (gb->ptr[0] << gb->bits);
rval |= ((unsigned int) gb->ptr[1] << gb->bits) >> 8;
rval <<= bits;
rval >>= 8;
gb->bits += bits;
gb->ptr += (gb->bits >> 3);
gb->bits &= 0x7;
GST_DEBUG ("getbits%ld, %08lx", bits, rval);
return rval;
}
unsigned long
_gst_showbits_int (gst_getbits_t * gb, unsigned long bits)
{
unsigned long rval;
if (bits == 0)
return 0;
rval = swab32 (*((unsigned long *) (gb->ptr)));
rval <<= gb->bits;
rval >>= (32 - bits);
GST_DEBUG ("showbits%ld, %08lx", bits, rval);
return rval;
}
void
_gst_flushbits_int (gst_getbits_t * gb, unsigned long bits)
{
gb->bits += bits;
gb->ptr += (gb->bits >> 3);
gb->bits &= 0x7;
GST_DEBUG ("flushbits%ld", bits);
}
void
_gst_getbits_back_int (gst_getbits_t * gb, unsigned long bits)
{
gb->bits -= bits;
gb->ptr += (gb->bits >> 3);
gb->bits &= 0x7;
}

115
libs/gst/getbits/gstgetbits_i386.s
View file

@ -1,115 +0,0 @@
.align 16
.globl _gst_getbits_i386
.type _gst_getbits_i386,@function
_gst_getbits_i386:
cmpl $0,8(%esp)
jne .L39
xorl %eax,%eax
ret
.L39:
movl 4(%esp),%edx
movl (%edx),%ecx
movl (%ecx),%eax
bswap %eax
movl 16(%edx),%ecx
shll %cl, %eax
movl 8(%esp),%ecx
addl %ecx, 16(%edx)
negl %ecx
addl $32,%ecx
shrl %cl, %eax
movl 16(%edx),%ecx
sarl $3,%ecx
addl %ecx,(%edx)
andl $7,16(%edx)
ret
.align 16
.globl _gst_getbits_fast_i386
.type _gst_getbits_fast_i386,@function
_gst_getbits_fast_i386:
movl 4(%esp),%edx
movl (%edx),%ecx
movzbl 1(%ecx),%eax
movb (%ecx), %ah
movl 16(%edx),%ecx
shlw %cl, %ax
movl 8(%esp),%ecx
addl %ecx, 16(%edx)
negl %ecx
addl $16,%ecx
shrl %cl, %eax
movl 16(%edx),%ecx
sarl $3,%ecx
addl %ecx,(%edx)
andl $7,16(%edx)
ret
.align 16
.globl _gst_get1bit_i386
.type _gst_get1bit_i386,@function
_gst_get1bit_i386:
movl 4(%esp),%edx
movl (%edx),%ecx
movzbl (%ecx),%eax
movl 16(%edx),%ecx
incl %ecx
rolb %cl, %al
andb $1, %al
movl %ecx, 16(%edx)
andl $7,16(%edx)
sarl $3,%ecx
addl %ecx,(%edx)
ret
.align 16
.globl _gst_showbits_i386
.type _gst_showbits_i386,@function
_gst_showbits_i386:
cmpl $0,8(%esp)
jne .L40
xorl %eax,%eax
ret
.L40:
movl 4(%esp),%edx
movl (%edx),%ecx
movl (%ecx), %eax
bswap %eax
movl 16(%edx),%ecx
shll %cl, %eax
movl 8(%esp),%ecx
negl %ecx
addl $32,%ecx
shrl %cl, %eax
ret
.align 16
.globl _gst_flushbits_i386
.type _gst_flushbits_i386,@function
_gst_flushbits_i386:
movl 4(%esp),%ecx
movl 16(%ecx),%eax
addl 8(%esp),%eax
movl %eax, %edx
sarl $3,%eax
addl %eax,(%ecx)
andl $7, %edx
movl %edx, 16(%ecx)
ret
.align 16
.globl _gst_getbits_back_i386
.type _gst_getbits_back_i386,@function
_gst_getbits_back_i386:
movl 4(%esp),%edx
movl 16(%edx),%ecx
subl 8(%esp),%ecx
movl %ecx, %eax
sarl $3,%ecx
addl %ecx,(%edx)
andl $7,%eax
movl %eax, 16(%edx)
ret

302
libs/gst/getbits/gstgetbits_inl.h
View file

@ -1,302 +0,0 @@
/*
* Copyright (c) 1995 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
* Portions of this software Copyright (c) 1995 Brown University.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement
* is hereby granted, provided that the above copyright notice and the
* following two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
* UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
* BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
* SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
Changes to make the code reentrant:
deglobalized: curBits, curVidStream
deglobalized: bitOffset, bitLength, bitBuffer in vid_stream, not used
here
Additional changes:
-lsh@cs.brown.edu (Loring Holden)
*/
#ifndef __GST_GETBITS_INL_H__
#define __GST_GETBITS_INL_H__
#include <glib.h>
/*#define GETBITS_DEBUG_ENABLED */
/*#define GETBITS_OVERRUN_ENABLED */
#ifdef GETBITS_DEBUG_ENABLED
#define debug2(format,args...) g_print(format,##args)
#define debug(format,args...) g_print(format,##args),
#else
#define debug(format,args...)
#define debug2(format,args...)
#endif
#ifdef GETBITS_OVERRUN_ENABLED
#define checklength2(src, dst) (((unsigned char*)src)<(dst)?0:printf("overrun !! %p>=%p %ld %s %d\n", (src), (dst), (gb)->bits, __PRETTY_FUNCTION__, __LINE__))
#define checklength(src, dst) (((unsigned char*)src)<(dst)?0:printf("overrun !! %p>=%p %ld %s %d\n", (src), (dst), (gb)->bits, __PRETTY_FUNCTION__, __LINE__)),
#else
#define checklength(src, dst)
#define checklength2(src, dst)
#endif
#define swab32(x) GUINT32_FROM_BE(x)
/* External declarations for bitstream i/o operations. */
extern unsigned long gst_getbits_nBitMask[];
#define gst_getbits_init(gb, callback, data)
#define gst_getbits_newbuf(gb, buffer, len) \
{ \
(gb)->longptr = (unsigned long *)(buffer); \
(gb)->endptr = (unsigned char *)buffer+len; \
(gb)->length = len; \
(gb)->bits = 0; \
(gb)->dword = swab32(*(gb)->longptr); \
}
#define gst_getbits_bitoffset(gb) \
( \
debug("bitoffset: %ld %p\n", (gb)->bits, (gb)->longptr) \
(gb)->bits \
)
#define gst_getbits_bufferpos(gb) ((gb)->longptr)
#define gst_getbits_bytesleft(gb) ((gb)->endptr - (unsigned char*)(gb)->longptr)
#define gst_getbits_bitsleft(gb) (((gb)->endptr - (unsigned char*)(gb)->longptr)*8 - (gb)->bits)
#define gst_getbits1(gb) \
( \
((gb)->temp = (((gb)->dword & 0x80000000) != 0)), \
(gb)->dword <<= 1, \
(gb)->bits++, \
\
((gb)->bits & 0x20 ? ( \
(gb)->bits = 0, \
(gb)->longptr++, \
checklength((gb)->longptr, (gb)->endptr) \
((gb)->dword = swab32(*(gb)->longptr)) \
) \
:0), \
debug("getbits1 : %04lx %08lx %p\n", (gb)->temp, (gb)->dword, (gb)->longptr) \
(gb)->temp \
)
#define gst_getbits2(gb) \
( \
(gb)->bits += 2, \
\
((gb)->bits & 0x20 ? ( \
(gb)->bits -= 32, \
(gb)->longptr++, \
checklength((gb)->longptr, (gb)->endptr) \
((gb)->bits ? ( \
((gb)->dword |= \
(swab32(*(gb)->longptr) >> (2 - (gb)->bits))) \
) \
: 0 \
),( \
((gb)->temp = (((gb)->dword & 0xc0000000) >> 30)), \
((gb)->dword = swab32(*(gb)->longptr) << (gb)->bits)) \
) \
: ( \
((gb)->temp = (((gb)->dword & 0xc0000000) >> 30)), \
((gb)->dword <<= 2) \
) \
), \
debug("getbits2 : %04lx %08lx %p\n", (gb)->temp, (gb)->dword, (gb)->longptr) \
(gb)->temp \
)
#define gst_getbitsX(gb, num, mask, shift) \
( \
(gb)->bits += (num), \
\
((gb)->bits & 0x20 ? ( \
(gb)->bits -= 32, \
(gb)->longptr++, \
checklength((gb)->longptr, (gb)->endptr) \
((gb)->bits ? ( \
((gb)->dword |= (swab32(*(gb)->longptr) >> \
((num) - (gb)->bits))) \
) \
:0 \
), \
((gb)->temp = (((gb)->dword & (mask)) >> (shift))), \
((gb)->dword = swab32(*(gb)->longptr) << (gb)->bits) \
) \
: ( \
((gb)->temp = (((gb)->dword & mask) >> shift)), \
((gb)->dword <<= (num)) \
) \
), \
debug("getbits%-2d: %04lx %08lx %lu %p\n", num, (gb)->temp, (gb)->dword, mask, (gb)->longptr) \
(gb)->temp \
)
#define gst_getbits3(gb) gst_getbitsX(gb, 3, 0xe0000000UL, 29)
#define gst_getbits4(gb) gst_getbitsX(gb, 4, 0xf0000000UL, 28)
#define gst_getbits5(gb) gst_getbitsX(gb, 5, 0xf8000000UL, 27)
#define gst_getbits6(gb) gst_getbitsX(gb, 6, 0xfc000000UL, 26)
#define gst_getbits7(gb) gst_getbitsX(gb, 7, 0xfe000000UL, 25)
#define gst_getbits8(gb) gst_getbitsX(gb, 8, 0xff000000UL, 24)
#define gst_getbits9(gb) gst_getbitsX(gb, 9, 0xff800000UL, 23)
#define gst_getbits10(gb) gst_getbitsX(gb, 10, 0xffc00000UL, 22)
#define gst_getbits11(gb) gst_getbitsX(gb, 11, 0xffe00000UL, 21)
#define gst_getbits12(gb) gst_getbitsX(gb, 12, 0xfff00000UL, 20)
#define gst_getbits13(gb) gst_getbitsX(gb, 13, 0xfff80000UL, 19)
#define gst_getbits14(gb) gst_getbitsX(gb, 14, 0xfffc0000UL, 18)
#define gst_getbits15(gb) gst_getbitsX(gb, 15, 0xfffe0000UL, 17)
#define gst_getbits16(gb) gst_getbitsX(gb, 16, 0xffff0000UL, 16)
#define gst_getbits17(gb) gst_getbitsX(gb, 17, 0xffff8000UL, 15)
#define gst_getbits18(gb) gst_getbitsX(gb, 18, 0xffffc000UL, 14)
#define gst_getbits19(gb) gst_getbitsX(gb, 19, 0xffffe000UL, 13)
#define gst_getbits20(gb) gst_getbitsX(gb, 20, 0xfffff000UL, 12)
#define gst_getbits21(gb) gst_getbitsX(gb, 21, 0xfffff800UL, 11)
#define gst_getbits22(gb) gst_getbitsX(gb, 22, 0xfffffc00UL, 10)
#define gst_getbits32(gb) gst_getbitsX(gb, 32, 0xffffffffUL, 0)
#define gst_getbitsn(gb,num) gst_getbitsX(gb, (num), ((num) ? ((0xffffffffUL) << (32-(num))):0), (32-(num)))
#define gst_showbits32(gb) \
( \
((gb)->bits ? ( \
(gb)->dword | (swab32(*((gb)->longptr+1)) >> \
(32 - (gb)->bits)) \
) \
: ( \
(gb)->dword \
) \
) \
)
#define gst_showbitsX(gb, num, mask, shift) \
( \
((gb)->temp = (gb)->bits + num), \
((gb)->temp > 32 ? ( \
(gb)->temp -= 32, \
(((gb)->dword & mask) >> shift) | \
(swab32(*((gb)->longptr+1)) >> (shift + (num - (gb)->temp))) \
) \
: ( \
(((gb)->dword & mask) >> shift) \
) \
) \
)
#define gst_showbits1(gb) gst_showbitsX(gb, 1, 0x80000000, 31)
#define gst_showbits2(gb) gst_showbitsX(gb, 2, 0xc0000000, 30)
#define gst_showbits3(gb) gst_showbitsX(gb, 3, 0xe0000000, 29)
#define gst_showbits4(gb) gst_showbitsX(gb, 4, 0xf0000000, 28)
#define gst_showbits5(gb) gst_showbitsX(gb, 5, 0xf8000000, 27)
#define gst_showbits6(gb) gst_showbitsX(gb, 6, 0xfc000000, 26)
#define gst_showbits7(gb) gst_showbitsX(gb, 7, 0xfe000000, 25)
#define gst_showbits8(gb) gst_showbitsX(gb, 8, 0xff000000, 24)
#define gst_showbits9(gb) gst_showbitsX(gb, 9, 0xff800000, 23)
#define gst_showbits10(gb) gst_showbitsX(gb, 10, 0xffc00000, 22)
#define gst_showbits11(gb) gst_showbitsX(gb, 11, 0xffe00000, 21)
#define gst_showbits12(gb) gst_showbitsX(gb, 12, 0xfff00000, 20)
#define gst_showbits13(gb) gst_showbitsX(gb, 13, 0xfff80000, 19)
#define gst_showbits14(gb) gst_showbitsX(gb, 14, 0xfffc0000, 18)
#define gst_showbits15(gb) gst_showbitsX(gb, 15, 0xfffe0000, 17)
#define gst_showbits16(gb) gst_showbitsX(gb, 16, 0xffff0000, 16)
#define gst_showbits17(gb) gst_showbitsX(gb, 17, 0xffff8000, 15)
#define gst_showbits18(gb) gst_showbitsX(gb, 18, 0xffffc000, 14)
#define gst_showbits19(gb) gst_showbitsX(gb, 19, 0xffffe000, 13)
#define gst_showbits20(gb) gst_showbitsX(gb, 20, 0xfffff000, 12)
#define gst_showbits21(gb) gst_showbitsX(gb, 21, 0xfffff800, 11)
#define gst_showbits22(gb) gst_showbitsX(gb, 22, 0xfffffc00, 10)
#define gst_showbits23(gb) gst_showbitsX(gb, 23, 0xfffffe00, 9)
#define gst_showbits24(gb) gst_showbitsX(gb, 24, 0xffffff00, 8)
#define gst_showbits25(gb) gst_showbitsX(gb, 25, 0xffffff80, 7)
#define gst_showbits26(gb) gst_showbitsX(gb, 26, 0xffffffc0, 6)
#define gst_showbits27(gb) gst_showbitsX(gb, 27, 0xffffffe0, 5)
#define gst_showbits28(gb) gst_showbitsX(gb, 28, 0xfffffff0, 4)
#define gst_showbits29(gb) gst_showbitsX(gb, 29, 0xfffffff8, 3)
#define gst_showbits30(gb) gst_showbitsX(gb, 30, 0xfffffffc, 2)
#define gst_showbits31(gb) gst_showbitsX(gb, 31, 0xfffffffe, 1)
#define gst_showbitsn(gb,num) gst_showbitsX(gb, (num), ((0xffffffff) << (32-num)), (32-(num)))
#define gst_flushbits32(gb) \
{ \
(gb)->longptr++; \
checklength2((gb)->longptr, (gb)->endptr); \
(gb)->dword = swab32(*(gb)->longptr) << (gb)->bits; \
}
#define gst_flushbitsn(gb, num) \
{ \
(gb)->bits += num; \
\
if ((gb)->bits & 0x20) { \
(gb)->bits -= 32; \
(gb)->longptr++; \
checklength2((gb)->longptr, (gb)->endptr); \
(gb)->dword = swab32(*(gb)->longptr) << (gb)->bits; \
} \
else { \
(gb)->dword <<= num; \
} \
debug2("flushbits%-2d: %08lx %p\n", num, (gb)->dword, (gb)->longptr); \
}
#define gst_backbits24(gb) \
{ \
(gb)->bits -= 24; \
if ((gb)->bits < 0) { \
(gb)->bits += 32; \
(gb)->longptr--; \
} \
(gb)->dword = swab32(*(gb)->longptr) << (gb)->bits; \
}
#define gst_backbitsn(gb, num) \
{ \
(gb)->bits -= num; \
while ((gb)->bits < 0) { \
(gb)->bits += 32; \
(gb)->longptr--; \
} \
(gb)->dword = swab32(*(gb)->longptr) << (gb)->bits; \
debug2("backbits%-2d: %08lx %p\n", num, (gb)->dword, (gb)->longptr); \
}
#endif /* __GST_GETBITS_INL_H__ */