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ansi: support 256-colors

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Peter Ross 2012-09-01 15:18:19 +10:00 • committed by Michael Niedermayer
parent 95b9e56beb
commit 3ac718d60a
2 changed files with 29 additions and 6 deletions
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29
libavcodec/ansi.c
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@ -89,6 +89,21 @@ static av_cold int decode_init(AVCodecContext *avctx)
return 0;
}
static void set_palette(uint32_t *pal)
{
int r, g, b;
memcpy(pal, ff_cga_palette, 16 * 4);
pal += 16;
#define COLOR(x) ((x) * 40 + 55)
for (r = 0; r < 6; r++)
for (g = 0; g < 6; g++)
for (b = 0; b < 6; b++)
*pal++ = 0xFF000000 | (COLOR(r) << 16) | (COLOR(g) << 8) | COLOR(b);
#define GRAY(x) ((x) * 10 + 8)
for (g = 0; g < 24; g++)
*pal++ = 0xFF000000 | (GRAY(g) << 16) | (GRAY(g) << 8) | GRAY(g);
}
static void hscroll(AVCodecContext *avctx)
{
AnsiContext *s = avctx->priv_data;
@ -232,7 +247,7 @@ static int execute_code(AVCodecContext * avctx, int c)
}
s->frame.pict_type = AV_PICTURE_TYPE_I;
s->frame.palette_has_changed = 1;
memcpy(s->frame.data[1], ff_cga_palette, 16 * 4);
set_palette((uint32_t *)s->frame.data[1]);
erase_screen(avctx);
} else if (c == 'l') {
erase_screen(avctx);
@ -280,12 +295,20 @@ static int execute_code(AVCodecContext * avctx, int c)
s->bg = DEFAULT_BG_COLOR;
} else if (m == 1 || m == 2 || m == 4 || m == 5 || m == 7 || m == 8) {
s->attributes |= 1 << (m - 1);
} else if (m >= 30 && m <= 38) {
} else if (m >= 30 && m <= 37) {
s->fg = ansi_to_cga[m - 30];
} else if (m == 38 && i + 2 < s->nb_args && s->args[i + 1] == 5 && s->args[i + 2] < 256) {
int index = s->args[i + 2];
s->fg = index < 16 ? ansi_to_cga[index] : index;
i += 2;
} else if (m == 39) {
s->fg = ansi_to_cga[DEFAULT_FG_COLOR];
} else if (m >= 40 && m <= 47) {
s->bg = ansi_to_cga[m - 40];
} else if (m == 48 && i + 2 < s->nb_args && s->args[i + 1] == 5 && s->args[i + 2] < 256) {
int index = s->args[i + 2];
s->bg = index < 16 ? ansi_to_cga[index] : index;
i += 2;
} else if (m == 49) {
s->fg = ansi_to_cga[DEFAULT_BG_COLOR];
} else {
@ -329,7 +352,7 @@ static int decode_frame(AVCodecContext *avctx,
}
s->frame.pict_type = AV_PICTURE_TYPE_I;
s->frame.palette_has_changed = 1;
memcpy(s->frame.data[1], ff_cga_palette, 16 * 4);
set_palette((uint32_t *)s->frame.data[1]);
while(buf < buf_end) {
switch(s->state) {