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Diffstat (limited to 'src/libffmpeg/libavcodec/imgresample.c')
-rw-r--r--src/libffmpeg/libavcodec/imgresample.c79
1 files changed, 42 insertions, 37 deletions
diff --git a/src/libffmpeg/libavcodec/imgresample.c b/src/libffmpeg/libavcodec/imgresample.c
index 28147fc72..140894d36 100644
--- a/src/libffmpeg/libavcodec/imgresample.c
+++ b/src/libffmpeg/libavcodec/imgresample.c
@@ -16,13 +16,18 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+
+/**
+ * @file imgresample.c
+ * High quality image resampling with polyphase filters .
+ */
+
#include "avcodec.h"
#include "dsputil.h"
#ifdef USE_FASTMEMCPY
#include "fastmemcpy.h"
#endif
-extern int mm_flags;
#define NB_COMPONENTS 3
@@ -42,9 +47,9 @@ extern int mm_flags;
struct ImgReSampleContext {
int iwidth, iheight, owidth, oheight, topBand, bottomBand, leftBand, rightBand;
int h_incr, v_incr;
- INT16 h_filters[NB_PHASES][NB_TAPS] __align8; /* horizontal filters */
- INT16 v_filters[NB_PHASES][NB_TAPS] __align8; /* vertical filters */
- UINT8 *line_buf;
+ int16_t h_filters[NB_PHASES][NB_TAPS] __align8; /* horizontal filters */
+ int16_t v_filters[NB_PHASES][NB_TAPS] __align8; /* vertical filters */
+ uint8_t *line_buf;
};
static inline int get_phase(int pos)
@@ -53,12 +58,12 @@ static inline int get_phase(int pos)
}
/* This function must be optimized */
-static void h_resample_fast(UINT8 *dst, int dst_width, UINT8 *src, int src_width,
- int src_start, int src_incr, INT16 *filters)
+static void h_resample_fast(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
+ int src_start, int src_incr, int16_t *filters)
{
int src_pos, phase, sum, i;
- UINT8 *s;
- INT16 *filter;
+ uint8_t *s;
+ int16_t *filter;
src_pos = src_start;
for(i=0;i<dst_width;i++) {
@@ -96,11 +101,11 @@ static void h_resample_fast(UINT8 *dst, int dst_width, UINT8 *src, int src_width
}
/* This function must be optimized */
-static void v_resample(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
- INT16 *filter)
+static void v_resample(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
+ int16_t *filter)
{
int sum, i;
- UINT8 *s;
+ uint8_t *s;
s = src;
for(i=0;i<dst_width;i++) {
@@ -112,7 +117,7 @@ static void v_resample(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
#else
{
int j;
- UINT8 *s1 = s;
+ uint8_t *s1 = s;
sum = 0;
for(j=0;j<NB_TAPS;j++) {
@@ -155,12 +160,12 @@ static void v_resample(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
#define DUMP(reg) movq_r2m(reg, tmp); printf(#reg "=%016Lx\n", tmp.uq);
/* XXX: do four pixels at a time */
-static void h_resample_fast4_mmx(UINT8 *dst, int dst_width, UINT8 *src, int src_width,
- int src_start, int src_incr, INT16 *filters)
+static void h_resample_fast4_mmx(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
+ int src_start, int src_incr, int16_t *filters)
{
int src_pos, phase;
- UINT8 *s;
- INT16 *filter;
+ uint8_t *s;
+ int16_t *filter;
mmx_t tmp;
src_pos = src_start;
@@ -199,11 +204,11 @@ static void h_resample_fast4_mmx(UINT8 *dst, int dst_width, UINT8 *src, int src_
emms();
}
-static void v_resample4_mmx(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
- INT16 *filter)
+static void v_resample4_mmx(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
+ int16_t *filter)
{
int sum, i, v;
- UINT8 *s;
+ uint8_t *s;
mmx_t tmp;
mmx_t coefs[4];
@@ -240,7 +245,7 @@ static void v_resample4_mmx(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
packuswb_r2r(mm7, mm0);
movq_r2m(mm0, tmp);
- *(UINT32 *)dst = tmp.ud[0];
+ *(uint32_t *)dst = tmp.ud[0];
dst += 4;
s += 4;
dst_width -= 4;
@@ -275,8 +280,8 @@ typedef union {
signed short s[8];
} vec_ss_t;
-void v_resample16_altivec(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
- INT16 *filter)
+void v_resample16_altivec(uint8_t *dst, int dst_width, uint8_t *src, int wrap,
+ int16_t *filter)
{
int sum, i;
uint8_t *s;
@@ -392,12 +397,12 @@ void v_resample16_altivec(UINT8 *dst, int dst_width, UINT8 *src, int wrap,
#endif
/* slow version to handle limit cases. Does not need optimisation */
-static void h_resample_slow(UINT8 *dst, int dst_width, UINT8 *src, int src_width,
- int src_start, int src_incr, INT16 *filters)
+static void h_resample_slow(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
+ int src_start, int src_incr, int16_t *filters)
{
int src_pos, phase, sum, j, v, i;
- UINT8 *s, *src_end;
- INT16 *filter;
+ uint8_t *s, *src_end;
+ int16_t *filter;
src_end = src + src_width;
src_pos = src_start;
@@ -427,8 +432,8 @@ static void h_resample_slow(UINT8 *dst, int dst_width, UINT8 *src, int src_width
}
}
-static void h_resample(UINT8 *dst, int dst_width, UINT8 *src, int src_width,
- int src_start, int src_incr, INT16 *filters)
+static void h_resample(uint8_t *dst, int dst_width, uint8_t *src, int src_width,
+ int src_start, int src_incr, int16_t *filters)
{
int n, src_end;
@@ -464,11 +469,11 @@ static void h_resample(UINT8 *dst, int dst_width, UINT8 *src, int src_width,
}
static void component_resample(ImgReSampleContext *s,
- UINT8 *output, int owrap, int owidth, int oheight,
- UINT8 *input, int iwrap, int iwidth, int iheight)
+ uint8_t *output, int owrap, int owidth, int oheight,
+ uint8_t *input, int iwrap, int iwidth, int iheight)
{
int src_y, src_y1, last_src_y, ring_y, phase_y, y1, y;
- UINT8 *new_line, *src_line;
+ uint8_t *new_line, *src_line;
last_src_y = - FCENTER - 1;
/* position of the bottom of the filter in the source image */
@@ -529,7 +534,7 @@ static void component_resample(ImgReSampleContext *s,
/* XXX: the following filter is quite naive, but it seems to suffice
for 4 taps */
-static void build_filter(INT16 *filter, float factor)
+static void build_filter(int16_t *filter, float factor)
{
int ph, i, v;
float x, y, tab[NB_TAPS], norm, mult;
@@ -642,15 +647,15 @@ void av_free(void *ptr)
/* input */
#define XSIZE 256
#define YSIZE 256
-UINT8 img[XSIZE * YSIZE];
+uint8_t img[XSIZE * YSIZE];
/* output */
#define XSIZE1 512
#define YSIZE1 512
-UINT8 img1[XSIZE1 * YSIZE1];
-UINT8 img2[XSIZE1 * YSIZE1];
+uint8_t img1[XSIZE1 * YSIZE1];
+uint8_t img2[XSIZE1 * YSIZE1];
-void save_pgm(const char *filename, UINT8 *img, int xsize, int ysize)
+void save_pgm(const char *filename, uint8_t *img, int xsize, int ysize)
{
FILE *f;
f=fopen(filename,"w");
@@ -659,7 +664,7 @@ void save_pgm(const char *filename, UINT8 *img, int xsize, int ysize)
fclose(f);
}
-static void dump_filter(INT16 *filter)
+static void dump_filter(int16_t *filter)
{
int i, ph;
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-28 18:12:29 +0000