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Vertical yuv -> yuv16 scaler.

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Originally committed as revision 29517 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-08-14 15:52:40 +00:00
parent 562f685307
commit 52154148f4
2 changed files with 101 additions and 0 deletions
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81
libswscale/swscale.c
View File

@ -74,6 +74,7 @@ untested special converters
#include "swscale.h"
#include "swscale_internal.h"
#include "rgb2rgb.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/x86_cpu.h"
#include "libavutil/bswap.h"
@ -474,6 +475,86 @@ const char *sws_format_name(enum PixelFormat format)
}
}
static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,
int dstW, int chrDstW, int big_endian)
{
//FIXME Optimize (just quickly written not optimized..)
int i;
for (i = 0; i < dstW; i++) {
int val = 1 << 10;
int j;
for (j = 0; j < lumFilterSize; j++)
val += lumSrc[j][i] * lumFilter[j];
if (big_endian) {
AV_WB16(&dest[i], av_clip_uint16(val >> 11));
} else {
AV_WL16(&dest[i], av_clip_uint16(val >> 11));
}
}
if (uDest) {
for (i = 0; i < chrDstW; i++) {
int u = 1 << 10;
int v = 1 << 10;
int j;
for (j = 0; j < chrFilterSize; j++) {
u += chrSrc[j][i ] * chrFilter[j];
v += chrSrc[j][i + VOFW] * chrFilter[j];
}
if (big_endian) {
AV_WB16(&uDest[i], av_clip_uint16(u >> 11));
AV_WB16(&vDest[i], av_clip_uint16(v >> 11));
} else {
AV_WL16(&uDest[i], av_clip_uint16(u >> 11));
AV_WL16(&vDest[i], av_clip_uint16(v >> 11));
}
}
}
if (CONFIG_SWSCALE_ALPHA && aDest) {
for (i = 0; i < dstW; i++) {
int val = 1 << 10;
int j;
for (j = 0; j < lumFilterSize; j++)
val += alpSrc[j][i] * lumFilter[j];
if (big_endian) {
AV_WB16(&aDest[i], av_clip_uint16(val >> 11));
} else {
AV_WL16(&aDest[i], av_clip_uint16(val >> 11));
}
}
}
}
static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,
enum PixelFormat dstFormat)
{
if (isBE(dstFormat)) {
yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
chrFilter, chrSrc, chrFilterSize,
alpSrc,
dest, uDest, vDest, aDest,
dstW, chrDstW, 1);
} else {
yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,
chrFilter, chrSrc, chrFilterSize,
alpSrc,
dest, uDest, vDest, aDest,
dstW, chrDstW, 0);
}
}
static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)

20
libswscale/swscale_template.c
View File

@ -2813,6 +2813,15 @@ static int RENAME(swScale)(SwsContext *c, uint8_t* src[], int srcStride[], int s
{
const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
if (is16BPS(dstFormat))
{
yuv2yuvX16inC(
vLumFilter+dstY*vLumFilterSize , lumSrcPtr, vLumFilterSize,
vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
dstFormat);
}
else
if (vLumFilterSize == 1 && vChrFilterSize == 1) // unscaled YV12
{
int16_t *lumBuf = lumPixBuf[0];
@ -2898,11 +2907,22 @@ static int RENAME(swScale)(SwsContext *c, uint8_t* src[], int srcStride[], int s
{
const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
if (is16BPS(dstFormat))
{
yuv2yuvX16inC(
vLumFilter+dstY*vLumFilterSize , lumSrcPtr, vLumFilterSize,
vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
dstFormat);
}
else
{
yuv2yuvXinC(
vLumFilter+dstY*vLumFilterSize , lumSrcPtr, vLumFilterSize,
vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
alpSrcPtr, dest, uDest, vDest, aDest, dstW, chrDstW);
}
}
else
{
assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2);