generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Rename "palette" to "colormap" when it's referring to the mapping from a 2-bit

Browse Source 
encoded color to a 4-bit index into the DVD palette.
Patch by: Ian Caulfield, ian caulfield & gmx at

Originally committed as revision 9787 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ian Caulfield 2007-07-24 13:03:13 +00:00 committed by Panagiotis Issaris
parent c7d96ac69f
commit a363effbdf
1 changed files with 13 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
libavcodec/dvdsubdec.c
View File

@ -79,7 +79,7 @@ static int decode_rle(uint8_t *bitmap, int linesize, int w, int h,
}
static void guess_palette(uint32_t *rgba_palette,
uint8_t *palette,
uint8_t *colormap,
uint8_t *alpha,
uint32_t subtitle_color)
{
@ -92,8 +92,8 @@ static void guess_palette(uint32_t *rgba_palette,
memset(color_used, 0, 16);
nb_opaque_colors = 0;
for(i = 0; i < 4; i++) {
if (alpha[i] != 0 && !color_used[palette[i]]) {
color_used[palette[i]] = 1;
if (alpha[i] != 0 && !color_used[colormap[i]]) {
color_used[colormap[i]] = 1;
nb_opaque_colors++;
}
}
@ -105,16 +105,16 @@ static void guess_palette(uint32_t *rgba_palette,
memset(color_used, 0, 16);
for(i = 0; i < 4; i++) {
if (alpha[i] != 0) {
if (!color_used[palette[i]]) {
if (!color_used[colormap[i]]) {
level = (0xff * j) / nb_opaque_colors;
r = (((subtitle_color >> 16) & 0xff) * level) >> 8;
g = (((subtitle_color >> 8) & 0xff) * level) >> 8;
b = (((subtitle_color >> 0) & 0xff) * level) >> 8;
rgba_palette[i] = b | (g << 8) | (r << 16) | ((alpha[i] * 17) << 24);
color_used[palette[i]] = (i + 1);
color_used[colormap[i]] = (i + 1);
j--;
} else {
rgba_palette[i] = (rgba_palette[color_used[palette[i]] - 1] & 0x00ffffff) |
rgba_palette[i] = (rgba_palette[color_used[colormap[i]] - 1] & 0x00ffffff) |
((alpha[i] * 17) << 24);
}
}
@ -125,7 +125,7 @@ static int decode_dvd_subtitles(AVSubtitle *sub_header,
const uint8_t *buf, int buf_size)
{
int cmd_pos, pos, cmd, x1, y1, x2, y2, offset1, offset2, next_cmd_pos;
uint8_t palette[4], alpha[4];
uint8_t colormap[4], alpha[4];
int date;
int i;
int is_menu = 0;
@ -168,13 +168,13 @@ static int decode_dvd_subtitles(AVSubtitle *sub_header,
sub_header->end_display_time = (date << 10) / 90;
break;
case 0x03:
/* set palette */
/* set colormap */
if ((buf_size - pos) < 2)
goto fail;
palette[3] = buf[pos] >> 4;
palette[2] = buf[pos] & 0x0f;
palette[1] = buf[pos + 1] >> 4;
palette[0] = buf[pos + 1] & 0x0f;
colormap[3] = buf[pos] >> 4;
colormap[2] = buf[pos] & 0x0f;
colormap[1] = buf[pos + 1] >> 4;
colormap[0] = buf[pos + 1] & 0x0f;
pos += 2;
break;
case 0x04:
@ -249,7 +249,7 @@ static int decode_dvd_subtitles(AVSubtitle *sub_header,
decode_rle(bitmap + w, w * 2, w, h / 2,
buf, offset2 * 2, buf_size);
guess_palette(sub_header->rects[0].rgba_palette,
palette, alpha, 0xffff00);
colormap, alpha, 0xffff00);
sub_header->rects[0].x = x1;
sub_header->rects[0].y = y1;
sub_header->rects[0].w = w;