libswcale: PIX_FMT_BGR48LE and PIX_FMT_BGR48BE scaler implementation

Signed-off-by: Anton Khirnov <anton@khirnov.net>

6 files changed, 113 insertions, 3 deletions

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index f4f4bcbf0a..93c6a13b9d 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -639,6 +639,18 @@ static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc
             dest+=12;\
         }\
         break;\
+    case PIX_FMT_BGR48BE:\
+    case PIX_FMT_BGR48LE:\
+        func(uint8_t,0)\
+            ((uint8_t*)dest)[ 0] = ((uint8_t*)dest)[ 1] = b[Y1];\
+            ((uint8_t*)dest)[ 2] = ((uint8_t*)dest)[ 3] = g[Y1];\
+            ((uint8_t*)dest)[ 4] = ((uint8_t*)dest)[ 5] = r[Y1];\
+            ((uint8_t*)dest)[ 6] = ((uint8_t*)dest)[ 7] = b[Y2];\
+            ((uint8_t*)dest)[ 8] = ((uint8_t*)dest)[ 9] = g[Y2];\
+            ((uint8_t*)dest)[10] = ((uint8_t*)dest)[11] = r[Y2];\
+            dest+=12;\
+        }\
+        break;\
     case PIX_FMT_RGBA:\
     case PIX_FMT_BGRA:\
         if (CONFIG_SMALL) {\
@@ -976,6 +988,49 @@ static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,
     }
 }
 
+static inline void bgr48ToY(uint8_t *dst, const uint8_t *src, long width,
+                            uint32_t *unused)
+{
+    int i;
+    for (i = 0; i < width; i++) {
+        int b = src[i*6+0];
+        int g = src[i*6+2];
+        int r = src[i*6+4];
+
+        dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+    }
+}
+
+static inline void bgr48ToUV(uint8_t *dstU, uint8_t *dstV,
+                             const uint8_t *src1, const uint8_t *src2,
+                             long width, uint32_t *unused)
+{
+    int i;
+    for (i = 0; i < width; i++) {
+        int b = src1[6*i + 0];
+        int g = src1[6*i + 2];
+        int r = src1[6*i + 4];
+
+        dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+        dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+    }
+}
+
+static inline void bgr48ToUV_half(uint8_t *dstU, uint8_t *dstV,
+                                  const uint8_t *src1, const uint8_t *src2,
+                                  long width, uint32_t *unused)
+{
+    int i;
+    for (i = 0; i < width; i++) {
+        int b= src1[12*i + 0] + src1[12*i + 6];
+        int g= src1[12*i + 2] + src1[12*i + 8];
+        int r= src1[12*i + 4] + src1[12*i + 10];
+
+        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
+        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
+    }
+}
+
 #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
 static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\
 {\
@@ -1717,6 +1772,8 @@ void ff_get_unscaled_swscale(SwsContext *c)
         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE
         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE
+        && srcFormat != PIX_FMT_BGR48LE   && dstFormat != PIX_FMT_BGR48LE
+        && srcFormat != PIX_FMT_BGR48BE   && dstFormat != PIX_FMT_BGR48BE
         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
         c->swScale= rgbToRgbWrapper;
 
diff --git a/libswscale/swscale.h b/libswscale/swscale.h
index 672e30b60c..5d0c9e9049 100644
--- a/libswscale/swscale.h
+++ b/libswscale/swscale.h
@@ -30,7 +30,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBSWSCALE_VERSION_MAJOR 1
-#define LIBSWSCALE_VERSION_MINOR 0
+#define LIBSWSCALE_VERSION_MINOR 1
 #define LIBSWSCALE_VERSION_MICRO 0
 
 #define LIBSWSCALE_VERSION_INT  AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \
diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 4c6ad2a860..292e42fa0d 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -343,6 +343,8 @@ const char *sws_format_name(enum PixelFormat format);
 #define is16BPS(x)      (           \
            (x)==PIX_FMT_GRAY16BE    \
         || (x)==PIX_FMT_GRAY16LE    \
+        || (x)==PIX_FMT_BGR48BE     \
+        || (x)==PIX_FMT_BGR48LE     \
         || (x)==PIX_FMT_RGB48BE     \
         || (x)==PIX_FMT_RGB48LE     \
         || (x)==PIX_FMT_YUV420P16LE \
@@ -407,7 +409,9 @@ const char *sws_format_name(enum PixelFormat format);
         || (x)==PIX_FMT_MONOWHITE   \
     )
 #define isBGRinInt(x)   (           \
-           (x)==PIX_FMT_BGR32       \
+           (x)==PIX_FMT_BGR48BE     \
+        || (x)==PIX_FMT_BGR48LE     \
+        || (x)==PIX_FMT_BGR32       \
         || (x)==PIX_FMT_BGR32_1     \
         || (x)==PIX_FMT_BGR24       \
         || (x)==PIX_FMT_BGR565BE    \
@@ -430,7 +434,9 @@ const char *sws_format_name(enum PixelFormat format);
         || (x)==PIX_FMT_RGB24       \
     )
 #define isBGRinBytes(x) (           \
-           (x)==PIX_FMT_BGRA        \
+           (x)==PIX_FMT_BGR48BE     \
+        || (x)==PIX_FMT_BGR48LE     \
+        || (x)==PIX_FMT_BGRA        \
         || (x)==PIX_FMT_ABGR        \
         || (x)==PIX_FMT_BGR24       \
     )
diff --git a/libswscale/swscale_template.c b/libswscale/swscale_template.c
index e8d3f28ccb..234e61871b 100644
--- a/libswscale/swscale_template.c
+++ b/libswscale/swscale_template.c
@@ -801,6 +801,8 @@ static void sws_init_swScale_c(SwsContext *c)
         switch(srcFormat) {
         case PIX_FMT_RGB48BE:
         case PIX_FMT_RGB48LE: c->chrToYV12 = rgb48ToUV_half; break;
+        case PIX_FMT_BGR48BE:
+        case PIX_FMT_BGR48LE: c->chrToYV12 = bgr48ToUV_half; break;
         case PIX_FMT_RGB32  : c->chrToYV12 = bgr32ToUV_half;  break;
         case PIX_FMT_RGB32_1: c->chrToYV12 = bgr321ToUV_half; break;
         case PIX_FMT_BGR24  : c->chrToYV12 = bgr24ToUV_half_c; break;
@@ -816,6 +818,8 @@ static void sws_init_swScale_c(SwsContext *c)
         switch(srcFormat) {
         case PIX_FMT_RGB48BE:
         case PIX_FMT_RGB48LE: c->chrToYV12 = rgb48ToUV; break;
+        case PIX_FMT_BGR48BE:
+        case PIX_FMT_BGR48LE: c->chrToYV12 = bgr48ToUV; break;
         case PIX_FMT_RGB32  : c->chrToYV12 = bgr32ToUV;  break;
         case PIX_FMT_RGB32_1: c->chrToYV12 = bgr321ToUV; break;
         case PIX_FMT_BGR24  : c->chrToYV12 = bgr24ToUV_c; break;
@@ -862,6 +866,8 @@ static void sws_init_swScale_c(SwsContext *c)
     case PIX_FMT_BGR32_1: c->lumToYV12 = rgb321ToY; break;
     case PIX_FMT_RGB48BE:
     case PIX_FMT_RGB48LE: c->lumToYV12 = rgb48ToY; break;
+    case PIX_FMT_BGR48BE:
+    case PIX_FMT_BGR48LE: c->lumToYV12 = bgr48ToY; break;
     }
     if (c->alpPixBuf) {
         switch (srcFormat) {
@@ -882,6 +888,7 @@ static void sws_init_swScale_c(SwsContext *c)
         c->alpSrcOffset = 3;
         break;
     case PIX_FMT_RGB48LE:
+    case PIX_FMT_BGR48LE:
         c->lumSrcOffset = 1;
         c->chrSrcOffset = 1;
         c->alpSrcOffset = 1;
diff --git a/libswscale/utils.c b/libswscale/utils.c
index 7ca3cd4583..5f5eb322bf 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -73,6 +73,8 @@ const char *swscale_license(void)
         || (x)==PIX_FMT_RGB48LE     \
         || (x)==PIX_FMT_RGB32       \
         || (x)==PIX_FMT_RGB32_1     \
+        || (x)==PIX_FMT_BGR48BE     \
+        || (x)==PIX_FMT_BGR48LE     \
         || (x)==PIX_FMT_BGR24       \
         || (x)==PIX_FMT_BGR565      \
         || (x)==PIX_FMT_BGR555      \
diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c
index 8ea41af79b..74262c6b7f 100644
--- a/libswscale/yuv2rgb.c
+++ b/libswscale/yuv2rgb.c
@@ -99,6 +99,16 @@ const int *sws_getCoefficients(int colorspace)
     dst[12*i+ 8] = dst[12*i+ 9] = g[Y]; \
     dst[12*i+10] = dst[12*i+11] = b[Y];
 
+#define PUTBGR48(dst,src,i)             \
+    Y = src[2*i];                       \
+    dst[12*i+ 0] = dst[12*i+ 1] = b[Y]; \
+    dst[12*i+ 2] = dst[12*i+ 3] = g[Y]; \
+    dst[12*i+ 4] = dst[12*i+ 5] = r[Y]; \
+    Y = src[2*i+1];                     \
+    dst[12*i+ 6] = dst[12*i+ 7] = b[Y]; \
+    dst[12*i+ 8] = dst[12*i+ 9] = g[Y]; \
+    dst[12*i+10] = dst[12*i+11] = r[Y];
+
 #define YUV2RGBFUNC(func_name, dst_type, alpha) \
 static int func_name(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY, \
                      int srcSliceH, uint8_t* dst[], int dstStride[]) \
@@ -175,6 +185,32 @@ ENDYUV2RGBLINE(48)
     PUTRGB48(dst_1,py_1,1);
 ENDYUV2RGBFUNC()
 
+YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)
+    LOADCHROMA(0);
+    PUTBGR48(dst_1,py_1,0);
+    PUTBGR48(dst_2,py_2,0);
+
+    LOADCHROMA(1);
+    PUTBGR48(dst_2,py_2,1);
+    PUTBGR48(dst_1,py_1,1);
+
+    LOADCHROMA(2);
+    PUTBGR48(dst_1,py_1,2);
+    PUTBGR48(dst_2,py_2,2);
+
+    LOADCHROMA(3);
+    PUTBGR48(dst_2,py_2,3);
+    PUTBGR48(dst_1,py_1,3);
+ENDYUV2RGBLINE(48)
+    LOADCHROMA(0);
+    PUTBGR48(dst_1,py_1,0);
+    PUTBGR48(dst_2,py_2,0);
+
+    LOADCHROMA(1);
+    PUTBGR48(dst_2,py_2,1);
+    PUTBGR48(dst_1,py_1,1);
+ENDYUV2RGBFUNC()
+
 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)
     LOADCHROMA(0);
     PUTRGB(dst_1,py_1,0);
@@ -568,6 +604,8 @@ SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)
     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found from %s to %s.\n", sws_format_name(c->srcFormat), sws_format_name(c->dstFormat));
 
     switch (c->dstFormat) {
+    case PIX_FMT_BGR48BE:
+    case PIX_FMT_BGR48LE:    return yuv2rgb_c_bgr48;
     case PIX_FMT_RGB48BE:
     case PIX_FMT_RGB48LE:    return yuv2rgb_c_48;
     case PIX_FMT_ARGB: