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Originally committed as revision 11754 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-02-01 14:55:18 +00:00
parent 48670d4740
commit 530902f3c7
1 changed files with 16 additions and 16 deletions
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32
libavcodec/4xm.c
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@ -131,8 +131,8 @@ typedef struct FourXContext{
AVFrame current_picture, last_picture;
GetBitContext pre_gb; ///< ac/dc prefix
GetBitContext gb;
uint8_t *bytestream;
uint16_t *wordstream;
const uint8_t *bytestream;
const uint16_t *wordstream;
int mv[256];
VLC pre_vlc;
int last_dc;
@ -347,7 +347,7 @@ static int get32(void *p){
return le2me_32(*(uint32_t*)p);
}
static int decode_p_frame(FourXContext *f, uint8_t *buf, int length){
static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
int x, y;
const int width= f->avctx->width;
const int height= f->avctx->height;
@ -379,10 +379,10 @@ static int decode_p_frame(FourXContext *f, uint8_t *buf, int length){
}
f->bitstream_buffer= av_fast_realloc(f->bitstream_buffer, &f->bitstream_buffer_size, bitstream_size + FF_INPUT_BUFFER_PADDING_SIZE);
f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (uint32_t*)(buf + extra), bitstream_size/4);
f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);
init_get_bits(&f->gb, f->bitstream_buffer, 8*bitstream_size);
f->wordstream= (uint16_t*)(buf + extra + bitstream_size);
f->wordstream= (const uint16_t*)(buf + extra + bitstream_size);
f->bytestream= buf + extra + bitstream_size + wordstream_size;
init_mv(f);
@ -396,12 +396,12 @@ static int decode_p_frame(FourXContext *f, uint8_t *buf, int length){
}
if( bitstream_size != (get_bits_count(&f->gb)+31)/32*4
|| (((char*)f->wordstream - (char*)buf + 2)&~2) != extra + bitstream_size + wordstream_size
|| (((char*)f->bytestream - (char*)buf + 3)&~3) != extra + bitstream_size + wordstream_size + bytestream_size)
|| (((const char*)f->wordstream - (const char*)buf + 2)&~2) != extra + bitstream_size + wordstream_size
|| (((const char*)f->bytestream - (const char*)buf + 3)&~3) != extra + bitstream_size + wordstream_size + bytestream_size)
av_log(f->avctx, AV_LOG_ERROR, " %d %td %td bytes left\n",
bitstream_size - (get_bits_count(&f->gb)+31)/32*4,
-(((char*)f->bytestream - (char*)buf + 3)&~3) + (extra + bitstream_size + wordstream_size + bytestream_size),
-(((char*)f->wordstream - (char*)buf + 2)&~2) + (extra + bitstream_size + wordstream_size)
-(((const char*)f->bytestream - (const char*)buf + 3)&~3) + (extra + bitstream_size + wordstream_size + bytestream_size),
-(((const char*)f->wordstream - (const char*)buf + 2)&~2) + (extra + bitstream_size + wordstream_size)
);
return 0;
@ -512,14 +512,14 @@ static int decode_i_mb(FourXContext *f){
return 0;
}
static uint8_t *read_huffman_tables(FourXContext *f, uint8_t * const buf){
static const uint8_t *read_huffman_tables(FourXContext *f, const uint8_t * const buf){
int frequency[512];
uint8_t flag[512];
int up[512];
uint8_t len_tab[257];
int bits_tab[257];
int start, end;
uint8_t *ptr= buf;
const uint8_t *ptr= buf;
int j;
memset(frequency, 0, sizeof(frequency));
@ -596,7 +596,7 @@ static int mix(int c0, int c1){
return red/3*1024 + green/3*32 + blue/3;
}
static int decode_i2_frame(FourXContext *f, uint8_t *buf, int length){
static int decode_i2_frame(FourXContext *f, const uint8_t *buf, int length){
int x, y, x2, y2;
const int width= f->avctx->width;
const int height= f->avctx->height;
@ -632,7 +632,7 @@ static int decode_i2_frame(FourXContext *f, uint8_t *buf, int length){
return 0;
}
static int decode_i_frame(FourXContext *f, uint8_t *buf, int length){
static int decode_i_frame(FourXContext *f, const uint8_t *buf, int length){
int x, y;
const int width= f->avctx->width;
const int height= f->avctx->height;
@ -641,7 +641,7 @@ static int decode_i_frame(FourXContext *f, uint8_t *buf, int length){
const unsigned int bitstream_size= get32(buf);
const int token_count av_unused = get32(buf + bitstream_size + 8);
unsigned int prestream_size= 4*get32(buf + bitstream_size + 4);
uint8_t *prestream= buf + bitstream_size + 12;
const uint8_t *prestream= buf + bitstream_size + 12;
if(prestream_size + bitstream_size + 12 != length
|| bitstream_size > (1<<26)
@ -657,7 +657,7 @@ static int decode_i_frame(FourXContext *f, uint8_t *buf, int length){
prestream_size= length + buf - prestream;
f->bitstream_buffer= av_fast_realloc(f->bitstream_buffer, &f->bitstream_buffer_size, prestream_size + FF_INPUT_BUFFER_PADDING_SIZE);
f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (uint32_t*)prestream, prestream_size/4);
f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);
init_get_bits(&f->pre_gb, f->bitstream_buffer, 8*prestream_size);
f->last_dc= 0*128*8*8;
@ -680,7 +680,7 @@ static int decode_i_frame(FourXContext *f, uint8_t *buf, int length){
static int decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
const uint8_t *buf, int buf_size)
{
FourXContext * const f = avctx->priv_data;
AVFrame *picture = data;