swscale/swscale_unscaled: add unscaled x2rgb10le to packed RGB

Signed-off-by: James Almer <jamrial@gmail.com>

libswscale/rgb2rgb.c

@@ -425,3 +425,61 @@ void rgb48to64_ ## need_bswap(const uint8_t *src,                       \
 
 DEFINE_RGB48TO64(nobswap, 0)
 DEFINE_RGB48TO64(bswap, 1)
+
+#define DEFINE_X2RGB10TO16(need_bswap, swap, bits, alpha)                           \
+void x2rgb10to ## bits ## _ ## need_bswap(const uint8_t *src,                       \
+                                             uint8_t *dst, int src_size)            \
+{                                                                                   \
+    uint16_t *d = (uint16_t *)dst;                                                  \
+    const uint32_t *s = (const uint32_t *)src;                                      \
+    int i, num_pixels = src_size >> 2;                                              \
+    unsigned component;                                                             \
+                                                                                    \
+    for (i = 0; i < num_pixels; i++) {                                              \
+        unsigned p = AV_RL32(s + i);                                                \
+        component = (p >> 20) & 0x3FF;                                              \
+        d[(3 + alpha) * i + 0] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        component = (p >> 10) & 0x3FF;                                              \
+        d[(3 + alpha) * i + 1] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        component =  p        & 0x3FF;                                              \
+        d[(3 + alpha) * i + 2] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        if (alpha) d[(3 + alpha) * i + 3] = 0xffff;                                 \
+    }                                                                               \
+}
+
+DEFINE_X2RGB10TO16(nobswap, 0, 48, 0)
+DEFINE_X2RGB10TO16(bswap,   1, 48, 0)
+DEFINE_X2RGB10TO16(nobswap, 0, 64, 1)
+DEFINE_X2RGB10TO16(bswap,   1, 64, 1)
+
+#define DEFINE_X2RGB10TOBGR16(need_bswap, swap, bits, alpha)                        \
+void x2rgb10tobgr ## bits ## _ ## need_bswap(const uint8_t *src,                    \
+                                             uint8_t *dst, int src_size)            \
+{                                                                                   \
+    uint16_t *d = (uint16_t *)dst;                                                  \
+    const uint32_t *s = (const uint32_t *)src;                                      \
+    int i, num_pixels = src_size >> 2;                                              \
+    unsigned component;                                                             \
+                                                                                    \
+    for (i = 0; i < num_pixels; i++) {                                              \
+        unsigned p = AV_RL32(s + i);                                                \
+        component =  p        & 0x3FF;                                              \
+        d[(3 + alpha) * i + 0] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        component = (p >> 10) & 0x3FF;                                              \
+        d[(3 + alpha) * i + 1] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        component = (p >> 20) & 0x3FF;                                              \
+        d[(3 + alpha) * i + 2] = swap ? av_bswap16(component << 6 | component >> 4) \
+                                      :            component << 6 | component >> 4; \
+        if (alpha) d[(3 + alpha) * i + 3] = 0xffff;                                 \
+    }                                                                               \
+}
+
+DEFINE_X2RGB10TOBGR16(nobswap, 0, 48, 0)
+DEFINE_X2RGB10TOBGR16(bswap,   1, 48, 0)
+DEFINE_X2RGB10TOBGR16(nobswap, 0, 64, 1)
+DEFINE_X2RGB10TOBGR16(bswap,   1, 64, 1)

libswscale/rgb2rgb.h

@@ -80,6 +80,15 @@ void rgb15tobgr15(const uint8_t *src, uint8_t *dst, int src_size);
 void rgb12tobgr12(const uint8_t *src, uint8_t *dst, int src_size);
 void    rgb12to15(const uint8_t *src, uint8_t *dst, int src_size);
 
+void    x2rgb10to48_nobswap(const uint8_t *src, uint8_t *dst, int src_size);
+void      x2rgb10to48_bswap(const uint8_t *src, uint8_t *dst, int src_size);
+void x2rgb10tobgr48_nobswap(const uint8_t *src, uint8_t *dst, int src_size);
+void   x2rgb10tobgr48_bswap(const uint8_t *src, uint8_t *dst, int src_size);
+void    x2rgb10to64_nobswap(const uint8_t *src, uint8_t *dst, int src_size);
+void      x2rgb10to64_bswap(const uint8_t *src, uint8_t *dst, int src_size);
+void x2rgb10tobgr64_nobswap(const uint8_t *src, uint8_t *dst, int src_size);
+void   x2rgb10tobgr64_bswap(const uint8_t *src, uint8_t *dst, int src_size);
+
 void ff_rgb24toyv12_c(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
                       uint8_t *vdst, int width, int height, int lumStride,
                       int chromStride, int srcStride, const int32_t *rgb2yuv);

libswscale/swscale_unscaled.c

@@ -1742,6 +1742,11 @@ static int bayer_to_yv12_wrapper(SwsInternal *c, const uint8_t *const src[],
         || (x) == AV_PIX_FMT_UYVA   \
         )
 
+#define isX2RGB(x) (                   \
+           (x) == AV_PIX_FMT_X2RGB10LE \
+        || (x) == AV_PIX_FMT_X2BGR10LE \
+        )
+
 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
 typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
 static rgbConvFn findRgbConvFn(SwsInternal *c)
@@ -1814,6 +1819,31 @@ static rgbConvFn findRgbConvFn(SwsInternal *c)
               || CONV_IS(BGRA64LE, BGR48BE)
               || CONV_IS(RGBA64BE, RGB48LE)
               || CONV_IS(BGRA64BE, BGR48LE)) conv = rgb64to48_bswap;
+    } else if (isX2RGB(srcFormat) && isRGB48(dstFormat)) {
+        if      (CONV_IS(X2RGB10LE, RGB48LE)
+              || CONV_IS(X2BGR10LE, BGR48LE)) conv = HAVE_BIGENDIAN ? x2rgb10to48_bswap
+                                                                    : x2rgb10to48_nobswap;
+        else if (CONV_IS(X2RGB10LE, RGB48BE)
+              || CONV_IS(X2BGR10LE, BGR48BE)) conv = HAVE_BIGENDIAN ? x2rgb10to48_nobswap
+                                                                    : x2rgb10to48_bswap;
+        else if (CONV_IS(X2RGB10LE, BGR48LE)
+              || CONV_IS(X2BGR10LE, RGB48LE)) conv = HAVE_BIGENDIAN ? x2rgb10tobgr48_bswap
+                                                                    : x2rgb10tobgr48_nobswap;
+        else if (CONV_IS(X2RGB10LE, BGR48BE)
+              || CONV_IS(X2BGR10LE, RGB48BE)) conv = HAVE_BIGENDIAN ? x2rgb10tobgr48_nobswap
+                                                                    : x2rgb10tobgr48_bswap;
+        else if (CONV_IS(X2RGB10LE, RGBA64LE)
+              || CONV_IS(X2BGR10LE, BGRA64LE)) conv = HAVE_BIGENDIAN ? x2rgb10to64_bswap
+                                                                     : x2rgb10to64_nobswap;
+        else if (CONV_IS(X2RGB10LE, RGBA64BE)
+              || CONV_IS(X2BGR10LE, BGRA64BE)) conv = HAVE_BIGENDIAN ? x2rgb10to64_nobswap
+                                                                     : x2rgb10to64_bswap;
+        else if (CONV_IS(X2RGB10LE, BGRA64LE)
+              || CONV_IS(X2BGR10LE, RGBA64LE)) conv = HAVE_BIGENDIAN ? x2rgb10tobgr64_bswap
+                                                                     : x2rgb10tobgr64_nobswap;
+        else if (CONV_IS(X2RGB10LE, BGRA64BE)
+              || CONV_IS(X2BGR10LE, RGBA64BE)) conv = HAVE_BIGENDIAN ? x2rgb10tobgr64_nobswap
+                                                                     : x2rgb10tobgr64_bswap;
     } else if (isAYUV(srcFormat) && isAYUV(dstFormat)) {
         /* VUYX only for dst, to avoid copying undefined bytes */
         if (     CONV_IS(AYUV, VUYA)