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cleanup 

Originally committed as revision 1487 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-01-21 21:30:48 +00:00
parent 68f593b484
commit b7a22d846b
5 changed files with 45 additions and 25 deletions
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1
libavcodec/avcodec.h
View File

@ -1236,6 +1236,7 @@ void *av_mallocz(unsigned int size);
void av_free(void *ptr);
void __av_freep(void **ptr);
#define av_freep(p) __av_freep((void **)(p))
void *av_fast_realloc(void *ptr, int *size, int min_size);
/* for static data only */
/* call av_free_static to release all staticaly allocated tables */
void av_free_static(void);

28
libavcodec/h263dec.c
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@ -401,41 +401,19 @@ uint64_t time= rdtsc();
if (buf_size == 0) {
return 0;
}
if(s->flags&CODEC_FLAG_TRUNCATED){
int next;
ParseContext *pc= &s->parse_context;
pc->last_index= pc->index;
if(s->codec_id==CODEC_ID_MPEG4){
next= mpeg4_find_frame_end(s, buf, buf_size);
}else{
fprintf(stderr, "this codec doesnt support truncated bitstreams\n");
return -1;
}
if(next==-1){
if(buf_size + FF_INPUT_BUFFER_PADDING_SIZE + pc->index > pc->buffer_size){
pc->buffer_size= buf_size + pc->index + 10*1024;
pc->buffer= realloc(pc->buffer, pc->buffer_size);
}
memcpy(&pc->buffer[pc->index], buf, buf_size);
pc->index += buf_size;
if( ff_combine_frame(s, next, &buf, &buf_size) < 0 )
return buf_size;
}
if(pc->index){
if(next + FF_INPUT_BUFFER_PADDING_SIZE + pc->index > pc->buffer_size){
pc->buffer_size= next + pc->index + 10*1024;
pc->buffer= realloc(pc->buffer, pc->buffer_size);
}
memcpy(&pc->buffer[pc->index], buf, next + FF_INPUT_BUFFER_PADDING_SIZE );
pc->index = 0;
buf= pc->buffer;
buf_size= pc->last_index + next;
}
}
retry:

11
libavcodec/mem.c
View File

@ -71,6 +71,17 @@ void *av_malloc(unsigned int size)
return ptr;
}
/**
* realloc which does nothing if the block is large enogh
*/
void *av_fast_realloc(void *ptr, int *size, int min_size){
if(min_size < *size) return ptr;
*size= min_size + 10*1024;
return realloc(ptr, *size);
}
/* NOTE: ptr = NULL is explicetly allowed */
void av_free(void *ptr)
{

29
libavcodec/mpegvideo.c
View File

@ -2627,6 +2627,35 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
#endif
}
/**
* combines the (truncated) bitstream to a complete frame
* @returns -1 if no complete frame could be created
*/
int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size){
ParseContext *pc= &s->parse_context;
pc->last_index= pc->index;
if(next==-1){
pc->buffer= av_fast_realloc(pc->buffer, &pc->buffer_size, (*buf_size) + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(&pc->buffer[pc->index], *buf, *buf_size);
pc->index += *buf_size;
return -1;
}
if(pc->index){
pc->buffer= av_fast_realloc(pc->buffer, &pc->buffer_size, next + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
memcpy(&pc->buffer[pc->index], *buf, next + FF_INPUT_BUFFER_PADDING_SIZE );
pc->index = 0;
*buf= pc->buffer;
*buf_size= pc->last_index + next;
}
return 0;
}
void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length)
{
int bytes= length>>4;

1
libavcodec/mpegvideo.h
View File

@ -604,6 +604,7 @@ void ff_draw_horiz_band(MpegEncContext *s);
void ff_emulated_edge_mc(MpegEncContext *s, UINT8 *src, int linesize, int block_w, int block_h,
int src_x, int src_y, int w, int h);
char ff_get_pict_type_char(int pict_type);
int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
extern enum PixelFormat ff_yuv420p_list[2];