highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Slightly simplify ipvideo_decode_block_opcode_0xD

Browse Source 
Originally committed as revision 18283 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger
2009-03-31 19:36:44 +00:00
parent 49a20ffabc
commit 993a442315
1 changed files with 7 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
libavcodec/interplayvideo.c
View File

@ -500,24 +500,18 @@ static int ipvideo_decode_block_opcode_0xC(IpvideoContext *s)
static int ipvideo_decode_block_opcode_0xD(IpvideoContext *s) static int ipvideo_decode_block_opcode_0xD(IpvideoContext *s)
{ {
int y; int y;
unsigned char P[4]; unsigned char P;
unsigned char index = 0;
/* 4-color block encoding: each 4x4 block is a different color */ /* 4-color block encoding: each 4x4 block is a different color */
CHECK_STREAM_PTR(4); CHECK_STREAM_PTR(4);
memcpy(P, s->stream_ptr, 4); for (y = 0; y < 16; y++) {
s->stream_ptr += 4; if (!(y & 3)) // start of block
P = *s->stream_ptr++;
for (y = 0; y < 8; y++) { memset(s->pixel_ptr, P, 4);
if (y < 4)
index = 0;
else
index = 2;
memset(s->pixel_ptr , P[index ], 4);
memset(s->pixel_ptr + 4, P[index + 1], 4);
s->pixel_ptr += s->stride; s->pixel_ptr += s->stride;
// switch to right half
if (y == 7) s->pixel_ptr -= 8 * s->stride - 4;
} }
/* report success */ /* report success */