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move ff_emulated_edge_mc() to dsputil

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Originally committed as revision 12318 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2008-03-04 23:10:47 +00:00
parent 8d4bef64b4
commit 288a44fb7a
4 changed files with 75 additions and 73 deletions
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71
libavcodec/dsputil.c
View File

@ -457,6 +457,77 @@ static void draw_edges_c(uint8_t *buf, int wrap, int width, int height, int w)
}
}
/**
* Copies a rectangular area of samples to a temporary buffer and replicates the boarder samples.
* @param buf destination buffer
* @param src source buffer
* @param linesize number of bytes between 2 vertically adjacent samples in both the source and destination buffers
* @param block_w width of block
* @param block_h height of block
* @param src_x x coordinate of the top left sample of the block in the source buffer
* @param src_y y coordinate of the top left sample of the block in the source buffer
* @param w width of the source buffer
* @param h height of the source buffer
*/
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
int src_x, int src_y, int w, int h){
int x, y;
int start_y, start_x, end_y, end_x;
if(src_y>= h){
src+= (h-1-src_y)*linesize;
src_y=h-1;
}else if(src_y<=-block_h){
src+= (1-block_h-src_y)*linesize;
src_y=1-block_h;
}
if(src_x>= w){
src+= (w-1-src_x);
src_x=w-1;
}else if(src_x<=-block_w){
src+= (1-block_w-src_x);
src_x=1-block_w;
}
start_y= FFMAX(0, -src_y);
start_x= FFMAX(0, -src_x);
end_y= FFMIN(block_h, h-src_y);
end_x= FFMIN(block_w, w-src_x);
// copy existing part
for(y=start_y; y<end_y; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= src[x + y*linesize];
}
}
//top
for(y=0; y<start_y; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= buf[x + start_y*linesize];
}
}
//bottom
for(y=end_y; y<block_h; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= buf[x + (end_y-1)*linesize];
}
}
for(y=0; y<block_h; y++){
//left
for(x=0; x<start_x; x++){
buf[x + y*linesize]= buf[start_x + y*linesize];
}
//right
for(x=end_x; x<block_w; x++){
buf[x + y*linesize]= buf[end_x - 1 + y*linesize];
}
}
}
static void get_pixels_c(DCTELEM *restrict block, const uint8_t *pixels, int line_size)
{
int i;

4
libavcodec/dsputil.h
View File

@ -168,6 +168,10 @@ typedef struct ScanTable{
void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize,
int block_w, int block_h,
int src_x, int src_y, int w, int h);
/**
* DSPContext.
*/

71
libavcodec/mpegvideo.c
View File

@ -1342,77 +1342,6 @@ v= (int)(128 + r*sin(theta*3.141592/180));
}
}
/**
* Copies a rectangular area of samples to a temporary buffer and replicates the boarder samples.
* @param buf destination buffer
* @param src source buffer
* @param linesize number of bytes between 2 vertically adjacent samples in both the source and destination buffers
* @param block_w width of block
* @param block_h height of block
* @param src_x x coordinate of the top left sample of the block in the source buffer
* @param src_y y coordinate of the top left sample of the block in the source buffer
* @param w width of the source buffer
* @param h height of the source buffer
*/
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
int src_x, int src_y, int w, int h){
int x, y;
int start_y, start_x, end_y, end_x;
if(src_y>= h){
src+= (h-1-src_y)*linesize;
src_y=h-1;
}else if(src_y<=-block_h){
src+= (1-block_h-src_y)*linesize;
src_y=1-block_h;
}
if(src_x>= w){
src+= (w-1-src_x);
src_x=w-1;
}else if(src_x<=-block_w){
src+= (1-block_w-src_x);
src_x=1-block_w;
}
start_y= FFMAX(0, -src_y);
start_x= FFMAX(0, -src_x);
end_y= FFMIN(block_h, h-src_y);
end_x= FFMIN(block_w, w-src_x);
// copy existing part
for(y=start_y; y<end_y; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= src[x + y*linesize];
}
}
//top
for(y=0; y<start_y; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= buf[x + start_y*linesize];
}
}
//bottom
for(y=end_y; y<block_h; y++){
for(x=start_x; x<end_x; x++){
buf[x + y*linesize]= buf[x + (end_y-1)*linesize];
}
}
for(y=0; y<block_h; y++){
//left
for(x=0; x<start_x; x++){
buf[x + y*linesize]= buf[start_x + y*linesize];
}
//right
for(x=end_x; x<block_w; x++){
buf[x + y*linesize]= buf[end_x - 1 + y*linesize];
}
}
}
static inline int hpel_motion_lowres(MpegEncContext *s,
uint8_t *dest, uint8_t *src,
int field_based, int field_select,

2
libavcodec/mpegvideo.h
View File

@ -694,8 +694,6 @@ void MPV_common_init_armv4l(MpegEncContext *s);
void MPV_common_init_altivec(MpegEncContext *s);
void ff_clean_intra_table_entries(MpegEncContext *s);
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
int src_x, int src_y, int w, int h);
void ff_mpeg_flush(AVCodecContext *avctx);
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);