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Declare vars as const when possible

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Originally committed as revision 13165 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-15 18:39:07 +00:00
parent 4aa485a3f6
commit e9de4f5640
1 changed files with 25 additions and 23 deletions
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48
libavcodec/ra144.c
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@ -62,10 +62,10 @@ static int ra144_decode_init(AVCodecContext * avctx)
return 0; return 0;
} }
static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len); static void final(Real144_internal *glob, const short *i1, const short *i2, void *out, int *statbuf, int len);
static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest); static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, const short *s1, const short *s2, const short *s3, short *dest);
static int irms(short *data, int factor); static int irms(const short *data, int factor);
static void rotate_block(short *source, short *target, int offset); static void rotate_block(const short *source, short *target, int offset);
/* lookup square roots in table */ /* lookup square roots in table */
static int t_sqrt(unsigned int x) static int t_sqrt(unsigned int x)
@ -80,7 +80,7 @@ static int t_sqrt(unsigned int x)
} }
/* do 'voice' */ /* do 'voice' */
static void do_voice(int *a1, int *a2) static void do_voice(const int *a1, int *a2)
{ {
int buffer[10]; int buffer[10];
int *b1 = buffer; int *b1 = buffer;
@ -102,7 +102,7 @@ static void do_voice(int *a1, int *a2)
/* do quarter-block output */ /* do quarter-block output */
static void do_output_subblock(Real144_internal *glob, unsigned short *gsp, unsigned int gval, signed short *output_buffer, GetBitContext *gb) static void do_output_subblock(Real144_internal *glob, const unsigned short *gsp, unsigned int gval, signed short *output_buffer, GetBitContext *gb)
{ {
unsigned short int buffer_a[40]; unsigned short int buffer_a[40];
unsigned short int buffer_b[40]; unsigned short int buffer_b[40];
@ -139,12 +139,12 @@ static void do_output_subblock(Real144_internal *glob, unsigned short *gsp, uns
} }
/* rotate block */ /* rotate block */
static void rotate_block(short *source, short *target, int offset) static void rotate_block(const short *source, short *target, int offset)
{ {
short *end; short *end;
short *ptr1; const short *ptr1;
short *ptr2; const short *ptr2;
short *ptr3; const short *ptr3;
ptr2 = source + BUFFERSIZE; ptr2 = source + BUFFERSIZE;
ptr3 = ptr1 = ptr2 - offset; ptr3 = ptr1 = ptr2 - offset;
end = target + BLOCKSIZE; end = target + BLOCKSIZE;
@ -158,9 +158,9 @@ static void rotate_block(short *source, short *target, int offset)
} }
/* inverse root mean square */ /* inverse root mean square */
static int irms(short *data, int factor) static int irms(const short *data, int factor)
{ {
short *p1, *p2; const short *p1, *p2;
unsigned int sum; unsigned int sum;
p2 = (p1 = data) + BLOCKSIZE; p2 = (p1 = data) + BLOCKSIZE;
@ -175,7 +175,8 @@ static int irms(short *data, int factor)
/* multiply/add wavetable */ /* multiply/add wavetable */
static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2,
int m3, short *s1, short *s2, short *s3, short *dest) int m3, const short *s1, const short *s2, const short *s3,
short *dest)
{ {
int a, b, c, i; int a, b, c, i;
const short *ptr, *ptr2; const short *ptr, *ptr2;
@ -204,8 +205,8 @@ static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2,
} }
static void final(Real144_internal *glob, short *i1, short *i2, void *out, static void final(Real144_internal *glob, const short *i1, const short *i2,
int *statbuf, int len) void *out, int *statbuf, int len)
{ {
int x, sum, i; int x, sum, i;
int buffer[10]; int buffer[10];
@ -241,9 +242,9 @@ static void final(Real144_internal *glob, short *i1, short *i2, void *out,
memcpy(statbuf, ptr, 20); memcpy(statbuf, ptr, 20);
} }
static unsigned int rms(int *data, int f) static unsigned int rms(const int *data, int f)
{ {
int *c; const int *c;
int x; int x;
unsigned int res; unsigned int res;
int b; int b;
@ -277,7 +278,8 @@ static unsigned int rms(int *data, int f)
return res; return res;
} }
static void dec1(Real144_internal *glob, int *data, int *inp, int n, int f) static void dec1(Real144_internal *glob, const int *data, const int *inp,
int n, int f)
{ {
short *ptr,*end; short *ptr,*end;
@ -289,14 +291,14 @@ static void dec1(Real144_internal *glob, int *data, int *inp, int n, int f)
*(ptr++) = *(inp++); *(ptr++) = *(inp++);
} }
static int eq(Real144_internal *glob, short *in, int *target) static int eq(Real144_internal *glob, const short *in, int *target)
{ {
int retval; int retval;
int a; int a;
int b; int b;
int c; int c;
unsigned int u; unsigned int u;
short *sptr; const short *sptr;
int *ptr1, *ptr2, *ptr3; int *ptr1, *ptr2, *ptr3;
int *bp1, *bp2; int *bp1, *bp2;
int buffer1[10]; int buffer1[10];
@ -349,10 +351,10 @@ static int eq(Real144_internal *glob, short *in, int *target)
return retval; return retval;
} }
static void dec2(Real144_internal *glob, int *data, int *inp, int n, int f, static void dec2(Real144_internal *glob, const int *data, const int *inp,
int *inp2, int l) int n, int f, const int *inp2, int l)
{ {
unsigned int *ptr1,*ptr2; unsigned const int *ptr1,*ptr2;
int work[10]; int work[10];
int a,b; int a,b;
int x; int x;