Module: wine Branch: master Commit: 5578446530cf13945b980e2fa42659ce8f101e72 URL: http://source.winehq.org/git/wine.git/?a=commit;h=5578446530cf13945b980e2fa4...
Author: Jörg Höhle hoehle@users.sourceforge.net Date: Sat Apr 10 17:35:23 2010 +0200
msvidc: Fix 16bit VIDEO-1/CRAM decompression.
---
dlls/msvidc32/msvideo1.c | 55 ++++++++++++++++++--------------------------- 1 files changed, 22 insertions(+), 33 deletions(-)
diff --git a/dlls/msvidc32/msvideo1.c b/dlls/msvidc32/msvideo1.c index 9b571bf..68a52c6 100644 --- a/dlls/msvidc32/msvideo1.c +++ b/dlls/msvidc32/msvideo1.c @@ -95,10 +95,18 @@ msvideo1_decode_8bit( int width, int height, const unsigned char *buf, int buf_s blocks_high = height / 4; total_blocks = blocks_wide * blocks_high; block_inc = 4; +#ifdef ORIGINAL row_dec = stride + 4; +#else + row_dec = - (stride - 4); /* such that -row_dec > 0 */ +#endif
for (block_y = blocks_high; block_y > 0; block_y--) { +#ifdef ORIGINAL block_ptr = ((block_y * 4) - 1) * stride; +#else + block_ptr = ((blocks_high - block_y) * 4) * stride; +#endif for (block_x = blocks_wide; block_x > 0; block_x--) { /* check if this block should be skipped */ if (skip_blocks) { @@ -131,16 +139,7 @@ msvideo1_decode_8bit( int width, int height, const unsigned char *buf, int buf_s
for (pixel_y = 0; pixel_y < 4; pixel_y++) { for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) - { -#ifdef ORIGINAL pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1]; -#else - pixels[width*(height-(pixel_ptr/width)-1) + - pixel_ptr%width] = - colors[(flags & 0x1) ^ 1]; - pixel_ptr++; -#endif - } pixel_ptr -= row_dec; } } else if (byte_b >= 0x90) { @@ -153,19 +152,9 @@ msvideo1_decode_8bit( int width, int height, const unsigned char *buf, int buf_s
for (pixel_y = 0; pixel_y < 4; pixel_y++) { for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) - { -#ifdef ORIGINAL - pixels[pixel_ptr++] = - colors[((pixel_y & 0x2) << 1) + - (pixel_x & 0x2) + ((flags & 0x1) ^ 1)]; -#else - pixels[width*(height-(pixel_ptr/width)-1) + - pixel_ptr%width] = - colors[((pixel_y & 0x2) << 1) + + pixels[pixel_ptr++] = + colors[((pixel_y & 0x2) << 1) + (pixel_x & 0x2) + ((flags & 0x1) ^ 1)]; - pixel_ptr++; -#endif - } pixel_ptr -= row_dec; } } else { @@ -174,15 +163,7 @@ msvideo1_decode_8bit( int width, int height, const unsigned char *buf, int buf_s
for (pixel_y = 0; pixel_y < 4; pixel_y++) { for (pixel_x = 0; pixel_x < 4; pixel_x++) - { -#ifdef ORIGINAL pixels[pixel_ptr++] = colors[0]; -#else - pixels[width*(height-(pixel_ptr/width)-1) + - pixel_ptr%width] = colors[0]; - pixel_ptr++; -#endif - } pixel_ptr -= row_dec; } } @@ -218,10 +199,18 @@ msvideo1_decode_16bit( int width, int height, const unsigned char *buf, int buf_ blocks_high = height / 4; total_blocks = blocks_wide * blocks_high; block_inc = 4; +#ifdef ORIGINAL row_dec = stride + 4; +#else + row_dec = - (stride - 4); /* such that -row_dec > 0 */ +#endif
for (block_y = blocks_high; block_y > 0; block_y--) { +#ifdef ORIGINAL block_ptr = ((block_y * 4) - 1) * stride; +#else + block_ptr = ((blocks_high - block_y) * 4) * stride; +#endif for (block_x = blocks_wide; block_x > 0; block_x--) { /* check if this block should be skipped */ if (skip_blocks) { @@ -272,8 +261,8 @@ msvideo1_decode_16bit( int width, int height, const unsigned char *buf, int buf_
for (pixel_y = 0; pixel_y < 4; pixel_y++) { for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1) - pixels[pixel_ptr++] = - colors[((pixel_y & 0x2) << 1) + + pixels[pixel_ptr++] = + colors[((pixel_y & 0x2) << 1) + (pixel_x & 0x2) + ((flags & 0x1) ^ 1)]; pixel_ptr -= row_dec; } @@ -408,7 +397,7 @@ static LRESULT CRAM_Decompress( Msvideo1Context *info, ICDECOMPRESS *icd, DWORD width = icd->lpbiInput->biWidth; height = icd->lpbiInput->biHeight; bit_per_pixel = icd->lpbiInput->biBitCount; - stride = width*bit_per_pixel/8; + stride = width; /* in bytes or 16bit words */ sz = icd->lpbiInput->biSizeImage;
if (info->mode_8bit) @@ -440,7 +429,7 @@ static LRESULT CRAM_DecompressEx( Msvideo1Context *info, ICDECOMPRESSEX *icd, DW width = icd->lpbiSrc->biWidth; height = icd->lpbiSrc->biHeight; bit_per_pixel = icd->lpbiSrc->biBitCount; - stride = width*bit_per_pixel/8; + stride = width; sz = icd->lpbiSrc->biSizeImage;
if (info->mode_8bit)