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16-bit grayscale support 

Originally committed as revision 20427 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Kostya Shishkov 2006-10-24 05:02:33 +00:00
parent 9efe56f691
commit 4884b9e50d
3 changed files with 94 additions and 3 deletions
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88
libswscale/swscale.c
View File

@ -111,11 +111,13 @@ untested special converters
|| (x)==PIX_FMT_RGB32|| (x)==PIX_FMT_BGR24|| (x)==PIX_FMT_BGR565|| (x)==PIX_FMT_BGR555\
|| (x)==PIX_FMT_BGR32|| (x)==PIX_FMT_RGB24\
|| (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P\
|| (x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE\
|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P)
#define isSupportedOut(x) ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\
|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P\
|| isRGB(x) || isBGR(x)\
|| (x)==PIX_FMT_NV12 || (x)==PIX_FMT_NV21\
|| (x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE\
|| (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P)
#define isPacked(x) ((x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422 ||isRGB(x) || isBGR(x))
@ -231,6 +233,10 @@ char *sws_format_name(enum PixelFormat format)
return "rgb565";
case PIX_FMT_RGB555:
return "rgb555";
case PIX_FMT_GRAY16BE:
return "gray16be";
case PIX_FMT_GRAY16LE:
return "gray16le";
case PIX_FMT_GRAY8:
return "gray8";
case PIX_FMT_MONOWHITE:
@ -1726,6 +1732,72 @@ static int simpleCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSli
return srcSliceH;
}
static int gray16togray(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint8_t *srcPtr= src[0];
uint8_t *dstPtr= dst[0] + dstStride[0]*y;
if(!isGray(c->dstFormat)){
int height= -((-srcSliceH)>>c->chrDstVSubSample);
memset(dst[1], 128, dstStride[1]*height);
memset(dst[2], 128, dstStride[2]*height);
}
if(c->srcFormat == PIX_FMT_GRAY16LE) srcPtr++;
for(i=0; i<height; i++)
{
for(j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];
srcPtr+= srcStride[0];
dstPtr+= dstStride[0];
}
return srcSliceH;
}
static int graytogray16(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint8_t *srcPtr= src[0];
uint8_t *dstPtr= dst[0] + dstStride[0]*y;
for(i=0; i<height; i++)
{
for(j=0; j<length; j++)
{
dstPtr[j<<1] = srcPtr[j];
dstPtr[(j<<1)+1] = srcPtr[j];
}
srcPtr+= srcStride[0];
dstPtr+= dstStride[0];
}
return srcSliceH;
}
static int gray16swap(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[]){
int length= c->srcW;
int y= srcSliceY;
int height= srcSliceH;
int i, j;
uint16_t *srcPtr= src[0];
uint16_t *dstPtr= dst[0] + dstStride[0]*y/2;
for(i=0; i<height; i++)
{
for(j=0; j<length; j++) dstPtr[j] = bswap_16(srcPtr[j]);
srcPtr+= srcStride[0]/2;
dstPtr+= dstStride[0]/2;
}
return srcSliceH;
}
static void getSubSampleFactors(int *h, int *v, int format){
switch(format){
case PIX_FMT_UYVY422:
@ -1734,6 +1806,8 @@ static void getSubSampleFactors(int *h, int *v, int format){
*v=0;
break;
case PIX_FMT_YUV420P:
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented
case PIX_FMT_NV12:
case PIX_FMT_NV21:
@ -2045,6 +2119,20 @@ SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH
c->swScale= simpleCopy;
}
/* gray16{le,be} conversions */
if(isGray16(srcFormat) && (isPlanarYUV(dstFormat) || (dstFormat == PIX_FMT_GRAY8)))
{
c->swScale= gray16togray;
}
if((isPlanarYUV(srcFormat) || (srcFormat == PIX_FMT_GRAY8)) && isGray16(dstFormat))
{
c->swScale= graytogray16;
}
if(srcFormat != dstFormat && isGray16(srcFormat) && isGray16(dstFormat))
{
c->swScale= gray16swap;
}
if(c->swScale){
if(flags&SWS_PRINT_INFO)
MSG_INFO("SwScaler: using unscaled %s -> %s special converter\n",

5
libswscale/swscale_internal.h
View File

@ -181,7 +181,8 @@ char *sws_format_name(int format);
|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_NV12 \
|| (x)==PIX_FMT_NV21)
#define isYUV(x) ((x)==PIX_FMT_UYVY422 || (x)==PIX_FMT_YUYV422 || isPlanarYUV(x))
#define isGray(x) ((x)==PIX_FMT_GRAY8)
#define isGray(x) ((x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE)
#define isGray16(x) ((x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE)
#define isRGB(x) ((x)==PIX_FMT_BGR32 || (x)==PIX_FMT_RGB24 \
|| (x)==PIX_FMT_RGB565 || (x)==PIX_FMT_RGB555 \
|| (x)==PIX_FMT_RGB8 || (x)==PIX_FMT_RGB4 \
@ -204,6 +205,8 @@ static inline int fmt_depth(int fmt)
return 24;
case PIX_FMT_BGR565:
case PIX_FMT_RGB565:
case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
return 16;
case PIX_FMT_BGR555:
case PIX_FMT_RGB555:

4
libswscale/swscale_template.c
View File

@ -2437,12 +2437,12 @@ static inline void RENAME(hyscale)(uint16_t *dst, long dstWidth, uint8_t *src, i
int srcFormat, uint8_t *formatConvBuffer, int16_t *mmx2Filter,
int32_t *mmx2FilterPos)
{
if(srcFormat==PIX_FMT_YUYV422)
if(srcFormat==PIX_FMT_YUYV422 || srcFormat==PIX_FMT_GRAY16BE)
{
RENAME(yuy2ToY)(formatConvBuffer, src, srcW);
src= formatConvBuffer;
}
else if(srcFormat==PIX_FMT_UYVY422)
else if(srcFormat==PIX_FMT_UYVY422 || srcFormat==PIX_FMT_GRAY16LE)
{
RENAME(uyvyToY)(formatConvBuffer, src, srcW);
src= formatConvBuffer;