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const

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Originally committed as revision 11796 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-02-01 16:24:33 +00:00
parent 31d889ec0a
commit c67102f902
1 changed files with 10 additions and 10 deletions
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20
libavcodec/xan.c
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@ -41,7 +41,7 @@ typedef struct XanContext {
AVFrame last_frame; AVFrame last_frame;
AVFrame current_frame; AVFrame current_frame;
unsigned char *buf; const unsigned char *buf;
int size; int size;
/* scratch space */ /* scratch space */
@ -87,7 +87,7 @@ static int xan_decode_init(AVCodecContext *avctx)
* memcpy doesn't like that; it's not uncommon, for example, for * memcpy doesn't like that; it's not uncommon, for example, for
* dest = src+1, to turn byte A into pattern AAAAAAAA. * dest = src+1, to turn byte A into pattern AAAAAAAA.
* This was originally repz movsb in Intel x86 ASM. */ * This was originally repz movsb in Intel x86 ASM. */
static inline void bytecopy(unsigned char *dest, unsigned char *src, int count) static inline void bytecopy(unsigned char *dest, const unsigned char *src, int count)
{ {
int i; int i;
@ -95,12 +95,12 @@ static inline void bytecopy(unsigned char *dest, unsigned char *src, int count)
dest[i] = src[i]; dest[i] = src[i];
} }
static int xan_huffman_decode(unsigned char *dest, unsigned char *src, static int xan_huffman_decode(unsigned char *dest, const unsigned char *src,
int dest_len) int dest_len)
{ {
unsigned char byte = *src++; unsigned char byte = *src++;
unsigned char ival = byte + 0x16; unsigned char ival = byte + 0x16;
unsigned char * ptr = src + byte*2; const unsigned char * ptr = src + byte*2;
unsigned char val = ival; unsigned char val = ival;
int counter = 0; int counter = 0;
unsigned char *dest_end = dest + dest_len; unsigned char *dest_end = dest + dest_len;
@ -129,7 +129,7 @@ static int xan_huffman_decode(unsigned char *dest, unsigned char *src,
return 0; return 0;
} }
static void xan_unpack(unsigned char *dest, unsigned char *src, int dest_len) static void xan_unpack(unsigned char *dest, const unsigned char *src, int dest_len)
{ {
unsigned char opcode; unsigned char opcode;
int size; int size;
@ -288,10 +288,10 @@ static void xan_wc3_decode_frame(XanContext *s) {
int imagedata_buffer_size = s->buffer2_size; int imagedata_buffer_size = s->buffer2_size;
/* pointers to segments inside the compressed chunk */ /* pointers to segments inside the compressed chunk */
unsigned char *huffman_segment; const unsigned char *huffman_segment;
unsigned char *size_segment; const unsigned char *size_segment;
unsigned char *vector_segment; const unsigned char *vector_segment;
unsigned char *imagedata_segment; const unsigned char *imagedata_segment;
huffman_segment = s->buf + AV_RL16(&s->buf[0]); huffman_segment = s->buf + AV_RL16(&s->buf[0]);
size_segment = s->buf + AV_RL16(&s->buf[2]); size_segment = s->buf + AV_RL16(&s->buf[2]);
@ -406,7 +406,7 @@ static void xan_wc4_decode_frame(XanContext *s) {
static int xan_decode_frame(AVCodecContext *avctx, static int xan_decode_frame(AVCodecContext *avctx,
void *data, int *data_size, void *data, int *data_size,
uint8_t *buf, int buf_size) const uint8_t *buf, int buf_size)
{ {
XanContext *s = avctx->priv_data; XanContext *s = avctx->priv_data;
AVPaletteControl *palette_control = avctx->palctrl; AVPaletteControl *palette_control = avctx->palctrl;