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forgot to apply the palette component lookup table

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Originally committed as revision 2259 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2003-09-11 05:39:51 +00:00
parent 541ae14095
commit 7e5ef401b7
1 changed files with 7 additions and 5 deletions
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12
libavformat/wc3movie.c
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@ -93,7 +93,7 @@ typedef struct Wc3DemuxContext {
} Wc3DemuxContext;
/* bizarre palette lookup table */
const unsigned char wc3_pal_lookup[] = {
static const unsigned char wc3_pal_lookup[] = {
0x00, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0E,
0x10, 0x12, 0x13, 0x15, 0x16, 0x18, 0x19, 0x1A,
0x1C, 0x1D, 0x1F, 0x20, 0x21, 0x23, 0x24, 0x25,
@ -154,7 +154,7 @@ static int wc3_read_header(AVFormatContext *s,
int current_palette = 0;
int bytes_to_read;
int i;
int temp;
unsigned char rotate;
/* default context members */
wc3->width = WC3_DEFAULT_WIDTH;
@ -225,9 +225,11 @@ static int wc3_read_header(AVFormatContext *s,
/* transform the current palette in place */
for (i = current_palette * PALETTE_SIZE;
i < (current_palette + 1) * PALETTE_SIZE; i++) {
/* rotate each palette component left by 2 */
temp = wc3->palettes[i] << 2;
wc3->palettes[i] = (temp & 0xFF) | (temp >> 8);
/* rotate each palette component left by 2 and use the result
* as an index into the color component table */
rotate = ((wc3->palettes[i] << 2) & 0xFF) |
((wc3->palettes[i] >> 6) & 0xFF);
wc3->palettes[i] = wc3_pal_lookup[rotate];
}
current_palette++;
break;