diff options
Diffstat (limited to 'engines/bladerunner/decompress_lcw.cpp')
| -rw-r--r-- | engines/bladerunner/decompress_lcw.cpp | 64 |
1 files changed, 18 insertions, 46 deletions
diff --git a/engines/bladerunner/decompress_lcw.cpp b/engines/bladerunner/decompress_lcw.cpp index 8d20e231c7..9fc4640d1b 100644 --- a/engines/bladerunner/decompress_lcw.cpp +++ b/engines/bladerunner/decompress_lcw.cpp @@ -34,79 +34,61 @@ uint32 decompress_lcw(uint8 *inBuf, uint32 inLen, uint8 *outBuf, uint32 outLen) uint8 *dst = outBuf; uint8 *outEnd = dst + outLen; - if (src[0] == 0) - { + if (src[0] == 0) { version = 2; ++src; } - while (src < inBuf + inLen && dst < outEnd && src[0] != 0x80) - { + while (src < inBuf + inLen && dst < outEnd && src[0] != 0x80) { out_remain = (int)(outEnd - dst); - if (src[0] == 0xff) // 0b11111111 - { + if (src[0] == 0xff) { // 0b11111111 count = src[1] | (src[2] << 8); pos = src[3] | (src[4] << 8); src += 5; count = MIN(count, out_remain); - if (version == 1) - { + if (version == 1) { for (i = 0; i < count; i++) dst[i] = outBuf[i + pos]; - } - else - { + } else { for (i = 0; i < count; i++) dst[i] = *(dst + i - pos); } - } - else if (src[0] == 0xfe) // 0b11111110 - { + } else if (src[0] == 0xfe) { // 0b11111110 count = src[1] | (src[2] << 8); color = src[3]; src += 4; count = MIN(count, out_remain); memset(dst, color, count); - } - else if (src[0] >= 0xc0) // 0b11?????? - { + } else if (src[0] >= 0xc0) { // 0b11?????? count = (src[0] & 0x3f) + 3; pos = src[1] | (src[2] << 8); src += 3; count = MIN(count, out_remain); - if (version == 1) - { + if (version == 1) { for (i = 0; i < count; i++) dst[i] = outBuf[i + pos]; - } - else - { + } else { for (i = 0; i < count; i++) dst[i] = *(dst + i - pos); } - } - else if (src[0] >= 0x80) // 0b10?????? - { + } else if (src[0] >= 0x80) { // 0b10?????? count = src[0] & 0x3f; ++src; count = MIN(count, out_remain); memcpy(dst, src, count); src += count; - } - else // 0b0??????? - { + } else { // 0b0??????? count = ((src[0] & 0x70) >> 4) + 3; relpos = ((src[0] & 0x0f) << 8) | src[1]; src += 2; count = MIN(count, out_remain); - for (i = 0; i < count; i++) - { + for (i = 0; i < count; i++) { dst[i] = *(dst + i - relpos); } } @@ -125,30 +107,20 @@ uint32 decompress_lcw_output_size(uint8 *inBuf, uint32 inLen) { if (src[0] == 0) ++src; - while (src[0] != 0x80 && src < inBuf + inLen) - { - if (src[0] == 0xff) // 0b11111111 - { + while (src[0] != 0x80 && src < inBuf + inLen) { + if (src[0] == 0xff) { // 0b11111111 count = src[1] | (src[2] << 8); src += 5; - } - else if (src[0] == 0xfe) // 0b11111110 - { + } else if (src[0] == 0xfe) { // 0b11111110 count = src[1] | (src[2] << 8); src += 4; - } - else if (src[0] >= 0xc0) // 0b11?????? - { + } else if (src[0] >= 0xc0) { // 0b11?????? count = (src[0] & 0x3f) + 3; src += 3; - } - else if (src[0] & 0x80) // 0b10?????? - { + } else if (src[0] & 0x80) { // 0b10?????? count = src[0] & 0x3f; src += count + 1; - } - else // 0b0??????? - { + } else { // 0b0??????? count = ((src[0] & 0x70) >> 4) + 3; src += 2; } |