diff options
author | Ronald S. Bultje <rsbultje@gmail.com> | 2012-08-28 04:32:50 +0400 |
---|---|---|
committer | Ronald S. Bultje <rsbultje@gmail.com> | 2012-08-29 01:58:52 +0400 |
commit | b64a72e1b2a9250d372add69d4f0f7efc92b16a8 (patch) | |
tree | 169899f6cdb8b603b12d41eb90521e9adba0b4a8 /libswscale | |
parent | 09d5e02ab0448acedc3d516595eebd408eebf679 (diff) |
yuv2rgb: handle line widths that are not a multiple of 4.
This introduces support for width%4==2 in addition to width%4==0. For
odd widths, some more checks are needed, since the current code always
handles two luma items in a row, thus there is a possibility of an
overread by one.
Diffstat (limited to 'libswscale')
-rw-r--r-- | libswscale/yuv2rgb.c | 64 |
1 files changed, 48 insertions, 16 deletions
diff --git a/libswscale/yuv2rgb.c b/libswscale/yuv2rgb.c index 1c44a2f544..f1ce4aaef4 100644 --- a/libswscale/yuv2rgb.c +++ b/libswscale/yuv2rgb.c @@ -147,15 +147,15 @@ const int *sws_getCoefficients(int colorspace) while (h_size--) { \ int av_unused U, V, Y; \ -#define ENDYUV2RGBLINE(dst_delta) \ - pu += 4; \ - pv += 4; \ - py_1 += 8; \ - py_2 += 8; \ - dst_1 += dst_delta; \ - dst_2 += dst_delta; \ +#define ENDYUV2RGBLINE(dst_delta, ss) \ + pu += 4 >> ss; \ + pv += 4 >> ss; \ + py_1 += 8 >> ss; \ + py_2 += 8 >> ss; \ + dst_1 += dst_delta >> ss; \ + dst_2 += dst_delta >> ss; \ } \ - if (c->dstW & 4) { \ + if (c->dstW & (4 >> ss)) { \ int av_unused Y, U, V; \ #define ENDYUV2RGBFUNC() \ @@ -165,7 +165,7 @@ const int *sws_getCoefficients(int colorspace) } #define CLOSEYUV2RGBFUNC(dst_delta) \ - ENDYUV2RGBLINE(dst_delta) \ + ENDYUV2RGBLINE(dst_delta, 0) \ ENDYUV2RGBFUNC() YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0) @@ -184,7 +184,7 @@ YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0) LOADCHROMA(3); PUTRGB48(dst_2, py_2, 3); PUTRGB48(dst_1, py_1, 3); -ENDYUV2RGBLINE(48) +ENDYUV2RGBLINE(48, 0) LOADCHROMA(0); PUTRGB48(dst_1, py_1, 0); PUTRGB48(dst_2, py_2, 0); @@ -192,6 +192,10 @@ ENDYUV2RGBLINE(48) LOADCHROMA(1); PUTRGB48(dst_2, py_2, 1); PUTRGB48(dst_1, py_1, 1); +ENDYUV2RGBLINE(48, 1) + LOADCHROMA(0); + PUTRGB48(dst_1, py_1, 0); + PUTRGB48(dst_2, py_2, 0); ENDYUV2RGBFUNC() YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0) @@ -210,7 +214,7 @@ YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0) LOADCHROMA(3); PUTBGR48(dst_2, py_2, 3); PUTBGR48(dst_1, py_1, 3); -ENDYUV2RGBLINE(48) +ENDYUV2RGBLINE(48, 0) LOADCHROMA(0); PUTBGR48(dst_1, py_1, 0); PUTBGR48(dst_2, py_2, 0); @@ -218,6 +222,10 @@ ENDYUV2RGBLINE(48) LOADCHROMA(1); PUTBGR48(dst_2, py_2, 1); PUTBGR48(dst_1, py_1, 1); +ENDYUV2RGBLINE(48, 1) + LOADCHROMA(0); + PUTBGR48(dst_1, py_1, 0); + PUTBGR48(dst_2, py_2, 0); ENDYUV2RGBFUNC() YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0) @@ -236,7 +244,7 @@ YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0) LOADCHROMA(3); PUTRGB(dst_2, py_2, 3); PUTRGB(dst_1, py_1, 3); -ENDYUV2RGBLINE(8) +ENDYUV2RGBLINE(8, 0) LOADCHROMA(0); PUTRGB(dst_1, py_1, 0); PUTRGB(dst_2, py_2, 0); @@ -244,6 +252,10 @@ ENDYUV2RGBLINE(8) LOADCHROMA(1); PUTRGB(dst_2, py_2, 1); PUTRGB(dst_1, py_1, 1); +ENDYUV2RGBLINE(8, 1) + LOADCHROMA(0); + PUTRGB(dst_1, py_1, 0); + PUTRGB(dst_2, py_2, 0); ENDYUV2RGBFUNC() YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1) @@ -264,7 +276,7 @@ YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1) PUTRGBA(dst_1, py_1, pa_2, 3, 24); pa_1 += 8; \ pa_2 += 8; \ -ENDYUV2RGBLINE(8) +ENDYUV2RGBLINE(8, 0) LOADCHROMA(0); PUTRGBA(dst_1, py_1, pa_1, 0, 24); PUTRGBA(dst_2, py_2, pa_2, 0, 24); @@ -272,6 +284,12 @@ ENDYUV2RGBLINE(8) LOADCHROMA(1); PUTRGBA(dst_2, py_2, pa_1, 1, 24); PUTRGBA(dst_1, py_1, pa_2, 1, 24); + pa_1 += 4; \ + pa_2 += 4; \ +ENDYUV2RGBLINE(8, 1) + LOADCHROMA(0); + PUTRGBA(dst_1, py_1, pa_1, 0, 24); + PUTRGBA(dst_2, py_2, pa_2, 0, 24); ENDYUV2RGBFUNC() YUV2RGBFUNC(yuva2argb_c, uint32_t, 1) @@ -292,7 +310,7 @@ YUV2RGBFUNC(yuva2argb_c, uint32_t, 1) PUTRGBA(dst_1, py_1, pa_1, 3, 0); pa_1 += 8; \ pa_2 += 8; \ -ENDYUV2RGBLINE(8) +ENDYUV2RGBLINE(8, 0) LOADCHROMA(0); PUTRGBA(dst_1, py_1, pa_1, 0, 0); PUTRGBA(dst_2, py_2, pa_2, 0, 0); @@ -300,6 +318,12 @@ ENDYUV2RGBLINE(8) LOADCHROMA(1); PUTRGBA(dst_2, py_2, pa_2, 1, 0); PUTRGBA(dst_1, py_1, pa_1, 1, 0); + pa_1 += 4; \ + pa_2 += 4; \ +ENDYUV2RGBLINE(8, 1) + LOADCHROMA(0); + PUTRGBA(dst_1, py_1, pa_1, 0, 0); + PUTRGBA(dst_2, py_2, pa_2, 0, 0); ENDYUV2RGBFUNC() YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0) @@ -318,7 +342,7 @@ YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0) LOADCHROMA(3); PUTRGB24(dst_2, py_2, 3); PUTRGB24(dst_1, py_1, 3); -ENDYUV2RGBLINE(24) +ENDYUV2RGBLINE(24, 0) LOADCHROMA(0); PUTRGB24(dst_1, py_1, 0); PUTRGB24(dst_2, py_2, 0); @@ -326,6 +350,10 @@ ENDYUV2RGBLINE(24) LOADCHROMA(1); PUTRGB24(dst_2, py_2, 1); PUTRGB24(dst_1, py_1, 1); +ENDYUV2RGBLINE(24, 1) + LOADCHROMA(0); + PUTRGB24(dst_1, py_1, 0); + PUTRGB24(dst_2, py_2, 0); ENDYUV2RGBFUNC() // only trivial mods from yuv2rgb_c_24_rgb @@ -345,7 +373,7 @@ YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0) LOADCHROMA(3); PUTBGR24(dst_2, py_2, 3); PUTBGR24(dst_1, py_1, 3); -ENDYUV2RGBLINE(24) +ENDYUV2RGBLINE(24, 0) LOADCHROMA(0); PUTBGR24(dst_1, py_1, 0); PUTBGR24(dst_2, py_2, 0); @@ -353,6 +381,10 @@ ENDYUV2RGBLINE(24) LOADCHROMA(1); PUTBGR24(dst_2, py_2, 1); PUTBGR24(dst_1, py_1, 1); +ENDYUV2RGBLINE(24, 1) + LOADCHROMA(0); + PUTBGR24(dst_1, py_1, 0); + PUTBGR24(dst_2, py_2, 0); ENDYUV2RGBFUNC() // This is exactly the same code as yuv2rgb_c_32 except for the types of |