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rgb2bayer: handle multiple bayer formats

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This commit is contained in:
David Schleef 2010-06-03 18:14:57 -07:00
parent 5c1eb82b8a
commit 2db6d968d8
2 changed files with 29 additions and 5 deletions
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26
gst/bayer/gstrgb2bayer.c
View file

@ -88,8 +88,9 @@ static GstStaticPadTemplate gst_rgb2bayer_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-bayer,width=[1,MAX],height=[1,MAX],"
"framerate=(fraction)[0/1,MAX]")
GST_STATIC_CAPS ("video/x-raw-bayer,"
"format=(string){bggr,gbrg,grbg,rggb},"
"width=[1,MAX],height=[1,MAX]," "framerate=(fraction)[0/1,MAX]")
);
/* class initialization */
@ -280,15 +281,29 @@ gst_rgb2bayer_set_caps (GstBaseTransform * trans, GstCaps * incaps,
{
GstRGB2Bayer *rgb2bayer = GST_RGB_2_BAYER (trans);
GstStructure *structure;
const char *format;
GST_DEBUG ("in caps %" GST_PTR_FORMAT " out caps %" GST_PTR_FORMAT, incaps,
outcaps);
structure = gst_caps_get_structure (incaps, 0);
structure = gst_caps_get_structure (outcaps, 0);
gst_structure_get_int (structure, "width", &rgb2bayer->width);
gst_structure_get_int (structure, "height", &rgb2bayer->height);
format = gst_structure_get_string (structure, "format");
if (g_str_equal (format, "bggr")) {
rgb2bayer->format = GST_RGB_2_BAYER_FORMAT_BGGR;
} else if (g_str_equal (format, "gbrg")) {
rgb2bayer->format = GST_RGB_2_BAYER_FORMAT_GBRG;
} else if (g_str_equal (format, "grbg")) {
rgb2bayer->format = GST_RGB_2_BAYER_FORMAT_GRBG;
} else if (g_str_equal (format, "rggb")) {
rgb2bayer->format = GST_RGB_2_BAYER_FORMAT_RGGB;
} else {
return FALSE;
}
return TRUE;
}
@ -332,9 +347,10 @@ gst_rgb2bayer_transform (GstBaseTransform * trans, GstBuffer * inbuf,
guint8 *src_line = src + width * 4 * j;
for (i = 0; i < width; i++) {
if ((i & 1) == 0 && (j & 1) == 0) {
int is_blue = ((j & 1) << 1) | (i & 1);
if (is_blue == rgb2bayer->format) {
dest_line[i] = src_line[i * 4 + 3];
} else if ((i & 1) == 1 && (j & 1) == 1) {
} else if ((is_blue ^ 3) == rgb2bayer->format) {
dest_line[i] = src_line[i * 4 + 1];
} else {
dest_line[i] = src_line[i * 4 + 2];

8
gst/bayer/gstrgb2bayer.h
View file

@ -34,11 +34,19 @@ G_BEGIN_DECLS
typedef struct _GstRGB2Bayer GstRGB2Bayer;
typedef struct _GstRGB2BayerClass GstRGB2BayerClass;
enum {
GST_RGB_2_BAYER_FORMAT_BGGR = 0,
GST_RGB_2_BAYER_FORMAT_GBRG,
GST_RGB_2_BAYER_FORMAT_GRBG,
GST_RGB_2_BAYER_FORMAT_RGGB
};
struct _GstRGB2Bayer
{
GstBaseTransform base_rgb2bayer;
int width, height;
int format;
};
struct _GstRGB2BayerClass