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Implement Y'CbCr 4:1:0 to RGB32 conversion.

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* Also known as the YUV9 FourCC and used in SVQ1 (early QuickTime)
videos.
* Fixes part of #4512 (one more video played correctly) and replay of
all old Quicktime videos when you don't have overlay support.
This commit is contained in:
Adrien Destugues
2014-12-09 14:30:28 +01:00
parent 0edd73e467
commit d5b78822f7
1 changed files with 50 additions and 16 deletions
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src/add-ons/media/plugins/ffmpeg/gfx_conv_c.cpp
+50 -16
View File
@@ -134,19 +134,6 @@ gfx_conv_yuv420p_ycbcr422_c(AVFrame *in, AVFrame *out, int width, int height)
}
}
void
gfx_conv_yuv410p_rgb32_c(AVFrame *in, AVFrame *out, int width, int height)
{
gfx_conv_null(in, out, width, height);
}
void
gfx_conv_yuv411p_rgb32_c(AVFrame *in, AVFrame *out, int width, int height)
{
gfx_conv_null(in, out, width, height);
}
#define CLIP(a) if (0xffffff00 & (uint32)a) { if (a < 0) a = 0; else a = 255; }
@@ -157,7 +144,7 @@ YUV444TORGBA8888(uint8 y, uint8 u, uint8 v)
int32 c = y - 16;
int32 d = u - 128;
int32 e = v - 128;
int32 r = (298 * c + 409 * e + 128) >> 8;
int32 g = (298 * c - 100 * d - 208 * e + 128) >> 8;
int32 b = (298 * c + 516 * d + 128) >> 8;
@@ -165,8 +152,55 @@ YUV444TORGBA8888(uint8 y, uint8 u, uint8 v)
CLIP(r);
CLIP(g);
CLIP(b);
return (uint32)((r << 16) | (g << 8) | b);
return (uint32)((255 << 24) | (r << 16) | (g << 8) | b);
}
void
gfx_conv_yuv410p_rgb32_c(AVFrame *in, AVFrame *out, int width, int height)
{
uint8 *ybase = (uint8 *)in->data[0];
uint8 *ubase = (uint8 *)in->data[1];
uint8 *vbase = (uint8 *)in->data[2];
uint32 *rgbbase = (uint32 *)out->data[0];
int uv_index;
for (int32 i = 0; i < height; i++) {
uv_index = 0;
for (int32 j=0; j < width; j+=4) {
rgbbase[j] = YUV444TORGBA8888(ybase[j], ubase[uv_index],
vbase[uv_index]);
rgbbase[j + 1] = YUV444TORGBA8888(ybase[j + 1], ubase[uv_index],
vbase[uv_index]);
rgbbase[j + 2] = YUV444TORGBA8888(ybase[j + 2], ubase[uv_index],
vbase[uv_index]);
rgbbase[j + 3] = YUV444TORGBA8888(ybase[j + 3], ubase[uv_index],
vbase[uv_index]);
uv_index++;
}
// Advance pointers to next line
ybase += in->linesize[0];
if ((i & 3) == 0) {
// These are the same for 4 lines
ubase += in->linesize[1];
vbase += in->linesize[2];
}
rgbbase += out->linesize[0] / 4;
}
}
void
gfx_conv_yuv411p_rgb32_c(AVFrame *in, AVFrame *out, int width, int height)
{
gfx_conv_null(in, out, width, height);
}