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videotestsrc: make and copy palette

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This commit is contained in:
Wim Taymans 2012-10-15 16:33:24 +02:00
parent f3f08e829d
commit d73dcb6af3
2 changed files with 37 additions and 0 deletions
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36
gst/videotestsrc/gstvideotestsrc.c
View file

@ -654,6 +654,28 @@ gst_video_test_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
return GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
}
static void
fill_palette_RGB8P (guint32 * palette)
{
/* build poor man's palette, taken from ffmpegcolorspace */
static const guint8 pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
gint i, r, g, b;
i = 0;
for (r = 0; r < 6; r++) {
for (g = 0; g < 6; g++) {
for (b = 0; b < 6; b++) {
palette[i++] =
(0xffU << 24) | (pal_value[r] << 16) | (pal_value[g] << 8) |
pal_value[b];
}
}
}
palette[i++] = 0; /* 100% transparent, i == 6*6*6 */
while (i < 256)
palette[i++] = 0xff000000;
}
static gboolean
gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
@ -699,11 +721,19 @@ gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
g_free (videotestsrc->tmpline2);
g_free (videotestsrc->tmpline_u8);
g_free (videotestsrc->tmpline_u16);
g_free (videotestsrc->palette);
videotestsrc->tmpline_u8 = g_malloc (info.width + 8);
videotestsrc->tmpline = g_malloc ((info.width + 8) * 4);
videotestsrc->tmpline2 = g_malloc ((info.width + 8) * 4);
videotestsrc->tmpline_u16 = g_malloc ((info.width + 16) * 8);
if (GST_VIDEO_INFO_FORMAT (&info) == GST_VIDEO_FORMAT_RGB8P) {
videotestsrc->palette = g_new (guint32, 256);
fill_palette_RGB8P (videotestsrc->palette);
} else {
videotestsrc->palette = NULL;
}
videotestsrc->accum_rtime += videotestsrc->running_time;
videotestsrc->accum_frames += videotestsrc->n_frames;
@ -836,6 +866,10 @@ gst_video_test_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
src->make_image (src, &frame);
if (src->palette) {
memcpy (GST_VIDEO_FRAME_PLANE_DATA (&frame, 1), src->palette, 256 * 4);
}
gst_video_frame_unmap (&frame);
GST_BUFFER_DTS (buffer) =
@ -909,6 +943,8 @@ gst_video_test_src_stop (GstBaseSrc * basesrc)
src->tmpline_u8 = NULL;
g_free (src->tmpline_u16);
src->tmpline_u16 = NULL;
g_free (src->palette);
src->palette = NULL;
return TRUE;
}

1
gst/videotestsrc/gstvideotestsrc.h
View file

@ -162,6 +162,7 @@ struct _GstVideoTestSrc {
gint horizontal_speed;
void (*make_image) (GstVideoTestSrc *v, GstVideoFrame *frame);
guint32 *palette;
/* temporary AYUV/ARGB scanline */
guint8 *tmpline_u8;