[FFmpeg-cvslog] Split out yuv2yuv1 luma and chroma in order to make them generic DSP functions
Kieran Kunhya
git at videolan.org
Sun Oct 23 05:53:10 CEST 2011
ffmpeg | branch: master | Kieran Kunhya <kieran at kunhya.com> | Fri Sep 30 13:50:49 2011 +0100| [34e8d147b31c5c8429799fe05b87a5f83bab333c] | committer: Ronald S. Bultje
Split out yuv2yuv1 luma and chroma in order to make them generic DSP functions
Signed-off-by: Ronald S. Bultje <rsbultje at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=34e8d147b31c5c8429799fe05b87a5f83bab333c
---
libswscale/swscale.c | 42 +++++++++++++-----------------------
libswscale/swscale_internal.h | 26 ++++++++--------------
libswscale/x86/swscale_template.c | 8 +++---
3 files changed, 29 insertions(+), 47 deletions(-)
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 227f65e..bac2932 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -386,34 +386,14 @@ static void yuv2yuvX_c(SwsContext *c, const int16_t *lumFilter,
}
}
-static void yuv2yuv1_c(SwsContext *c, const int16_t *lumSrc,
- const int16_t *chrUSrc, const int16_t *chrVSrc,
- const int16_t *alpSrc,
- uint8_t *dest[4], int dstW, int chrDstW)
+static void yuv2yuv1_c(const int16_t *src, uint8_t *dest, int dstW,
+ const uint8_t *dither, int offset)
{
- uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
- *aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
int i;
- const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
-
for (i=0; i<dstW; i++) {
- int val = (lumSrc[i]+ lumDither[i & 7]) >> 7;
- yDest[i]= av_clip_uint8(val);
+ int val = (src[i] + dither[(i + offset) & 7]) >> 7;
+ dest[i]= av_clip_uint8(val);
}
-
- if (uDest)
- for (i=0; i<chrDstW; i++) {
- int u = (chrUSrc[i] + chrDither[i & 7]) >> 7;
- int v = (chrVSrc[i] + chrDither[(i + 3) & 7]) >> 7;
- uDest[i]= av_clip_uint8(u);
- vDest[i]= av_clip_uint8(v);
- }
-
- if (CONFIG_SWSCALE_ALPHA && aDest)
- for (i=0; i<dstW; i++) {
- int val = (alpSrc[i] + lumDither[i & 7]) >> 7;
- aDest[i]= av_clip_uint8(val);
- }
}
static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
@@ -2582,10 +2562,18 @@ static int swScale(SwsContext *c, const uint8_t* src[],
const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
if ((dstY&chrSkipMask) || isGray(dstFormat))
dest[1] = dest[2] = NULL; //FIXME split functions in lumi / chromi
+ const int16_t *alpBuf= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? alpSrcPtr[0] : NULL;
+
if (c->yuv2yuv1 && vLumFilterSize == 1 && vChrFilterSize == 1) { // unscaled YV12
- const int16_t *alpBuf= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? alpSrcPtr[0] : NULL;
- yuv2yuv1(c, lumSrcPtr[0], chrUSrcPtr[0], chrVSrcPtr[0], alpBuf,
- dest, dstW, chrDstW);
+ yuv2yuv1(lumSrcPtr[0], dest[0], dstW, c->lumDither8, 0);
+
+ if (dest[1]){
+ yuv2yuv1(chrUSrcPtr[0], dest[1], chrDstW, c->chrDither8, 0);
+ yuv2yuv1(chrVSrcPtr[0], dest[2], chrDstW, c->chrDither8, 3);
+ }
+
+ if (alpBuf && dest[3])
+ yuv2yuv1(alpBuf, dest[3], dstW, c->lumDither8, 0);
} else { //General YV12
yuv2yuvX(c, vLumFilter + dstY * vLumFilterSize,
lumSrcPtr, vLumFilterSize,
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 9b895b1..7253c83 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -59,28 +59,22 @@ typedef int (*SwsFunc)(struct SwsContext *context, const uint8_t* src[],
int srcStride[], int srcSliceY, int srcSliceH,
uint8_t* dst[], int dstStride[]);
+
/**
- * Write one line of horizontally scaled Y/U/V/A to planar output
+ * Write one line of horizontally scaled data to planar output
* without any additional vertical scaling (or point-scaling).
*
- * @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * @param src scaled source data, 15bit for 8-10bit output,
* 19-bit for 16bit output (in int32_t)
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
- * 19-bit for 16bit output (in int32_t)
- * @param dest pointer to the 4 output planes (Y/U/V/A). For >8bit
+ * @param dest pointer to the output plane. For >8bit
* output, this is in uint16_t
- * @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
- * @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
+ * @param dstW width of destination in pixels
+ * @param dither ordered dither array of type int16_t and size 8
+ * @param offset Dither offset
*/
-typedef void (*yuv2planar1_fn) (struct SwsContext *c,
- const int16_t *lumSrc, const int16_t *chrUSrc,
- const int16_t *chrVSrc, const int16_t *alpSrc,
- uint8_t *dest[4], int dstW, int chrDstW);
+typedef void (*yuv2planar1_fn) (const int16_t *src, uint8_t *dest, int dstW,
+ const uint8_t *dither, int offset);
+
/**
* Write one line of horizontally scaled Y/U/V/A to planar output
* with multi-point vertical scaling between input pixels.
diff --git a/libswscale/x86/swscale_template.c b/libswscale/x86/swscale_template.c
index 50e4e4a..ccf4f74 100644
--- a/libswscale/x86/swscale_template.c
+++ b/libswscale/x86/swscale_template.c
@@ -2103,8 +2103,8 @@ static av_cold void RENAME(sws_init_swScale)(SwsContext *c)
dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21) {
if (!(c->flags & SWS_BITEXACT)) {
if (c->flags & SWS_ACCURATE_RND) {
- c->yuv2yuv1 = RENAME(yuv2yuv1_ar );
- c->yuv2yuvX = RENAME(yuv2yuvX_ar );
+ //c->yuv2yuv1 = RENAME(yuv2yuv1_ar );
+ //c->yuv2yuvX = RENAME(yuv2yuvX_ar );
if (!(c->flags & SWS_FULL_CHR_H_INT)) {
switch (c->dstFormat) {
case PIX_FMT_RGB32: c->yuv2packedX = RENAME(yuv2rgb32_X_ar); break;
@@ -2116,8 +2116,8 @@ static av_cold void RENAME(sws_init_swScale)(SwsContext *c)
}
}
} else {
- c->yuv2yuv1 = RENAME(yuv2yuv1 );
- c->yuv2yuvX = RENAME(yuv2yuvX );
+ //c->yuv2yuv1 = RENAME(yuv2yuv1 );
+ //c->yuv2yuvX = RENAME(yuv2yuvX );
if (!(c->flags & SWS_FULL_CHR_H_INT)) {
switch (c->dstFormat) {
case PIX_FMT_RGB32: c->yuv2packedX = RENAME(yuv2rgb32_X); break;
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