Add unscaled converter from GBRP > 8bit to RGBx48/64.

Fixes ticket #2633.

Tested-by: Michael Cinquin

1 files changed, 156 insertions, 0 deletions

diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
index cdd8401189..7c65daccae 100644
--- a/libswscale/swscale_unscaled.c
+++ b/libswscale/swscale_unscaled.c
@@ -389,6 +389,151 @@ static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
     return srcSliceH;
 }
 
+static void gbr16ptopacked16(const uint16_t *src[], int srcStride[],
+                             uint8_t *dst, int dstStride, int srcSliceH,
+                             int alpha, int swap, int bpp, int width)
+{
+    int x, h, i;
+    int scale_high = 16 - bpp, scale_low = (bpp - 8) * 2;
+    for (h = 0; h < srcSliceH; h++) {
+        uint16_t *dest = (uint16_t *)(dst + dstStride * h);
+        uint16_t component;
+
+        switch(swap) {
+        case 3:
+            if (alpha) {
+                for (x = 0; x < width; x++) {
+                    component = av_bswap16(src[0][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                    component = av_bswap16(src[1][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                    component = av_bswap16(src[2][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                    *dest++ = 0xffff;
+                }
+            } else {
+                for (x = 0; x < width; x++) {
+                    component = av_bswap16(src[0][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                    component = av_bswap16(src[1][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                    component = av_bswap16(src[2][x]);
+                    *dest++ = av_bswap16(component << scale_high | component >> scale_low);
+                }
+            }
+            break;
+        case 2:
+            if (alpha) {
+                for (x = 0; x < width; x++) {
+                    *dest++ = av_bswap16(src[0][x] << scale_high | src[0][x] >> scale_low);
+                    *dest++ = av_bswap16(src[1][x] << scale_high | src[1][x] >> scale_low);
+                    *dest++ = av_bswap16(src[2][x] << scale_high | src[2][x] >> scale_low);
+                    *dest++ = 0xffff;
+                }
+            } else {
+                for (x = 0; x < width; x++) {
+                    *dest++ = av_bswap16(src[0][x] << scale_high | src[0][x] >> scale_low);
+                    *dest++ = av_bswap16(src[1][x] << scale_high | src[1][x] >> scale_low);
+                    *dest++ = av_bswap16(src[2][x] << scale_high | src[2][x] >> scale_low);
+                }
+            }
+            break;
+        case 1:
+            if (alpha) {
+                for (x = 0; x < width; x++) {
+                    *dest++ = av_bswap16(src[0][x]) << scale_high | av_bswap16(src[0][x]) >> scale_low;
+                    *dest++ = av_bswap16(src[1][x]) << scale_high | av_bswap16(src[1][x]) >> scale_low;
+                    *dest++ = av_bswap16(src[2][x]) << scale_high | av_bswap16(src[2][x]) >> scale_low;
+                    *dest++ = 0xffff;
+                }
+            } else {
+                for (x = 0; x < width; x++) {
+                    *dest++ = av_bswap16(src[0][x]) << scale_high | av_bswap16(src[0][x]) >> scale_low;
+                    *dest++ = av_bswap16(src[1][x]) << scale_high | av_bswap16(src[1][x]) >> scale_low;
+                    *dest++ = av_bswap16(src[2][x]) << scale_high | av_bswap16(src[2][x]) >> scale_low;
+                }
+            }
+            break;
+        default:
+            if (alpha) {
+                for (x = 0; x < width; x++) {
+                    *dest++ = src[0][x] << scale_high | src[0][x] >> scale_low;
+                    *dest++ = src[1][x] << scale_high | src[1][x] >> scale_low;
+                    *dest++ = src[2][x] << scale_high | src[2][x] >> scale_low;
+                    *dest++ = 0xffff;
+                }
+            } else {
+                for (x = 0; x < width; x++) {
+                    *dest++ = src[0][x] << scale_high | src[0][x] >> scale_low;
+                    *dest++ = src[1][x] << scale_high | src[1][x] >> scale_low;
+                    *dest++ = src[2][x] << scale_high | src[2][x] >> scale_low;
+                }
+            }
+        }
+        for (i = 0; i < 3; i++)
+            src[i] += srcStride[i] >> 1;
+    }
+}
+
+static int planarRgb16ToRgb16Wrapper(SwsContext *c, const uint8_t *src[],
+                                     int srcStride[], int srcSliceY, int srcSliceH,
+                                     uint8_t *dst[], int dstStride[])
+{
+    const uint16_t *src102[] = { (uint16_t *)src[1], (uint16_t *)src[0], (uint16_t *)src[2] };
+    const uint16_t *src201[] = { (uint16_t *)src[2], (uint16_t *)src[0], (uint16_t *)src[1] };
+    int stride102[] = { srcStride[1], srcStride[0], srcStride[2] };
+    int stride201[] = { srcStride[2], srcStride[0], srcStride[1] };
+    const AVPixFmtDescriptor *src_format = av_pix_fmt_desc_get(c->srcFormat);
+    const AVPixFmtDescriptor *dst_format = av_pix_fmt_desc_get(c->dstFormat);
+    int bits_per_sample = src_format->comp[0].depth_minus1 + 1;
+    int swap = 0;
+    if ( HAVE_BIGENDIAN && !(src_format->flags & AV_PIX_FMT_FLAG_BE) ||
+        !HAVE_BIGENDIAN &&   src_format->flags & AV_PIX_FMT_FLAG_BE)
+        swap++;
+    if ( HAVE_BIGENDIAN && !(dst_format->flags & AV_PIX_FMT_FLAG_BE) ||
+        !HAVE_BIGENDIAN &&   dst_format->flags & AV_PIX_FMT_FLAG_BE)
+        swap += 2;
+
+    if (src_format->flags & (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB) !=
+        (AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB)) {
+        av_log(c, AV_LOG_ERROR, "unsupported planar RGB conversion %s -> %s\n",
+               src_format->name, dst_format->name);
+        return srcSliceH;
+    }
+    switch (c->dstFormat) {
+    case AV_PIX_FMT_BGR48LE:
+    case AV_PIX_FMT_BGR48BE:
+        gbr16ptopacked16(src102, stride102,
+                         dst[0] + srcSliceY * dstStride[0], dstStride[0],
+                         srcSliceH, 0, swap, bits_per_sample, c->srcW);
+        break;
+    case AV_PIX_FMT_RGB48LE:
+    case AV_PIX_FMT_RGB48BE:
+        gbr16ptopacked16(src201, stride201,
+                         dst[0] + srcSliceY * dstStride[0], dstStride[0],
+                         srcSliceH, 0, swap, bits_per_sample, c->srcW);
+        break;
+    case AV_PIX_FMT_RGBA64LE:
+    case AV_PIX_FMT_RGBA64BE:
+         gbr16ptopacked16(src201, stride201,
+                          dst[0] + srcSliceY * dstStride[0], dstStride[0],
+                          srcSliceH, 1, swap, bits_per_sample, c->srcW);
+        break;
+    case AV_PIX_FMT_BGRA64LE:
+    case AV_PIX_FMT_BGRA64BE:
+        gbr16ptopacked16(src102, stride102,
+                         dst[0] + srcSliceY * dstStride[0], dstStride[0],
+                         srcSliceH, 1, swap, bits_per_sample, c->srcW);
+        break;
+    default:
+        av_log(c, AV_LOG_ERROR,
+               "unsupported planar RGB conversion %s -> %s\n",
+               src_format->name, dst_format->name);
+    }
+
+    return srcSliceH;
+}
+
 static void gbr24ptopacked24(const uint8_t *src[], int srcStride[],
                              uint8_t *dst, int dstStride, int srcSliceH,
                              int width)
@@ -1070,6 +1215,17 @@ void ff_get_unscaled_swscale(SwsContext *c)
     if (srcFormat == AV_PIX_FMT_GBRP && isPlanar(srcFormat) && isByteRGB(dstFormat))
         c->swScale = planarRgbToRgbWrapper;
 
+    if ((srcFormat == AV_PIX_FMT_GBRP9LE  || srcFormat == AV_PIX_FMT_GBRP9BE  ||
+         srcFormat == AV_PIX_FMT_GBRP16LE || srcFormat == AV_PIX_FMT_GBRP16BE ||
+         srcFormat == AV_PIX_FMT_GBRP10LE || srcFormat == AV_PIX_FMT_GBRP10BE ||
+         srcFormat == AV_PIX_FMT_GBRP12LE || srcFormat == AV_PIX_FMT_GBRP12BE ||
+         srcFormat == AV_PIX_FMT_GBRP14LE || srcFormat == AV_PIX_FMT_GBRP14BE) &&
+        (dstFormat == AV_PIX_FMT_RGB48LE  || dstFormat == AV_PIX_FMT_RGB48BE  ||
+         dstFormat == AV_PIX_FMT_BGR48LE  || dstFormat == AV_PIX_FMT_BGR48BE  ||
+         dstFormat == AV_PIX_FMT_RGBA64LE || dstFormat == AV_PIX_FMT_RGBA64BE ||
+         dstFormat == AV_PIX_FMT_BGRA64LE || dstFormat == AV_PIX_FMT_BGRA64BE))
+        c->swScale = planarRgb16ToRgb16Wrapper;
+
     if (av_pix_fmt_desc_get(srcFormat)->comp[0].depth_minus1 == 7 &&
         isPackedRGB(srcFormat) && dstFormat == AV_PIX_FMT_GBRP)
         c->swScale = rgbToPlanarRgbWrapper;