From 1a636fc7f9b9e0ba5acf13859849ee27c17438b5 Mon Sep 17 00:00:00 2001 From: michael Date: Thu, 4 Sep 2008 20:46:36 +0000 Subject: Fix 4 and 8 bit RGB/BGR input. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@27521 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libswscale/swscale.c | 43 ++++++++++++++++++++++++++++++++++--------- 1 file changed, 34 insertions(+), 9 deletions(-) (limited to 'libswscale') diff --git a/libswscale/swscale.c b/libswscale/swscale.c index 891f79ac28..7be684ba88 100644 --- a/libswscale/swscale.c +++ b/libswscale/swscale.c @@ -2507,6 +2507,12 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int i; uint8_t* src2[4]= {src[0], src[1], src[2]}; uint32_t pal[256]; + int use_pal= c->srcFormat == PIX_FMT_PAL8 + || c->srcFormat == PIX_FMT_BGR4_BYTE + || c->srcFormat == PIX_FMT_RGB4_BYTE + || c->srcFormat == PIX_FMT_BGR8 + || c->srcFormat == PIX_FMT_RGB8; + if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) { av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n"); return 0; @@ -2515,15 +2521,34 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1; } - if (c->srcFormat == PIX_FMT_PAL8){ + if (use_pal){ for (i=0; i<256; i++){ - int p= ((uint32_t*)(src[1]))[i]; - int r= (p>>16)&0xFF; - int g= (p>> 8)&0xFF; - int b= p &0xFF; - int y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 ); - int u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128); - int v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128); + int p, r, g, b,y,u,v; + if(c->srcFormat == PIX_FMT_PAL8){ + p=((uint32_t*)(src[1]))[i]; + r= (p>>16)&0xFF; + g= (p>> 8)&0xFF; + b= p &0xFF; + }else if(c->srcFormat == PIX_FMT_RGB8){ + r= (i>>5 )*36; + g= ((i>>2)&7)*36; + b= (i&3 )*85; + }else if(c->srcFormat == PIX_FMT_BGR8){ + b= (i>>6 )*85; + g= ((i>>3)&7)*36; + r= (i&7 )*36; + }else if(c->srcFormat == PIX_FMT_RGB4_BYTE){ + r= (i>>3 )*255; + g= ((i>>1)&3)*85; + b= (i&1 )*255; + }else if(c->srcFormat == PIX_FMT_BGR4_BYTE){ + b= (i>>3 )*255; + g= ((i>>1)&3)*85; + r= (i&1 )*255; + } + y= av_clip_uint8(((RY*r + GY*g + BY*b)>>RGB2YUV_SHIFT) + 16 ); + u= av_clip_uint8(((RU*r + GU*g + BU*b)>>RGB2YUV_SHIFT) + 128); + v= av_clip_uint8(((RV*r + GV*g + BV*b)>>RGB2YUV_SHIFT) + 128); pal[i]= y + (u<<8) + (v<<16); } src2[1]= (uint8_t*)pal; @@ -2544,7 +2569,7 @@ int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2]}; src2[0] += (srcSliceH-1)*srcStride[0]; - if (c->srcFormat != PIX_FMT_PAL8) + if (!use_pal) src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1]; src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2]; -- cgit v1.2.3