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lavd/x11grab: Support AV_PIX_FMT_PAL8. 

Fixes ticket #3068.
This commit is contained in:
Carl Eugen Hoyos 2013-10-24 11:10:49 +02:00
parent b2fdf3fc35
commit f60c3a7c1b
1 changed files with 24 additions and 0 deletions
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24
libavdevice/x11grab.c
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@ -77,6 +77,8 @@ struct x11grab {
int follow_mouse; /**< Set by a private option. */
int show_region; /**< set by a private option. */
AVRational framerate; /**< Set by a private option. */
int palette_changed;
uint32_t palette[256];
Cursor c;
Window region_win; /**< This is used by show_region option. */
@ -167,6 +169,9 @@ x11grab_read_header(AVFormatContext *s1)
int use_shm;
char *dpyname, *offset;
int ret = 0;
Colormap color_map;
XColor color[256];
int i;
dpyname = av_strdup(s1->filename);
if (!dpyname)
@ -258,6 +263,15 @@ x11grab_read_header(AVFormatContext *s1)
case 8:
av_log (s1, AV_LOG_DEBUG, "8 bit palette\n");
input_pixfmt = AV_PIX_FMT_PAL8;
color_map = DefaultColormap(dpy, screen);
for (i = 0; i < 256; ++i)
color[i].pixel = i;
XQueryColors(dpy, color_map, color, 256);
for (i = 0; i < 256; ++i)
x11grab->palette[i] = (color[i].red & 0xFF00) << 8 |
(color[i].green & 0xFF00) |
(color[i].blue & 0xFF00) >> 8;
x11grab->palette_changed = 1;
break;
case 16:
if ( image->red_mask == 0xf800 &&
@ -489,6 +503,16 @@ x11grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
pkt->data = image->data;
pkt->size = s->frame_size;
pkt->pts = curtime;
if (s->palette_changed) {
uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
AVPALETTE_SIZE);
if (!pal) {
av_log(s, AV_LOG_ERROR, "Cannot append palette to packet\n");
} else {
memcpy(pal, s->palette, AVPALETTE_SIZE);
s->palette_changed = 0;
}
}
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);