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gamma: Add support for all RGB formats

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This commit is contained in:
Sebastian Dröge 2010-04-18 09:59:43 +02:00
parent 2d1e6cf3f5
commit e23d74ca84
1 changed files with 88 additions and 4 deletions
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92
gst/videofilter/gstgamma.c
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@ -65,21 +65,31 @@ enum
#define DEFAULT_PROP_GAMMA 1
static GstStaticPadTemplate gst_gamma_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ IYUV, I420, YV12, Y41B, Y42B, Y444, NV12, NV21, "
" YUY2, UYVY, AYUV, YVYU}"))
" YUY2, UYVY, AYUV, YVYU}") ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR)
);
static GstStaticPadTemplate gst_gamma_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV
("{ IYUV, I420, YV12, Y41B, Y42B, Y444, NV12, NV21, "
" YUY2, UYVY, AYUV, YVYU}"))
" YUY2, UYVY, AYUV, YVYU}") ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR)
);
static void gst_gamma_set_property (GObject * object, guint prop_id,
@ -252,6 +262,68 @@ gst_gamma_packed_yuv_ip (GstGamma * gamma, guint8 * data)
}
}
static const int cog_ycbcr_to_rgb_matrix_8bit_sdtv[] = {
298, 0, 409, -57068,
298, -100, -208, 34707,
298, 516, 0, -70870,
};
static const gint cog_rgb_to_ycbcr_matrix_8bit_sdtv[] = {
66, 129, 25, 4096,
-38, -74, 112, 32768,
112, -94, -18, 32768,
};
#define APPLY_MATRIX(m,o,v1,v2,v3) ((m[o*4] * v1 + m[o*4+1] * v2 + m[o*4+2] * v3 + m[o*4+3]) >> 8)
static void
gst_gamma_packed_rgb_ip (GstGamma * gamma, guint8 * data)
{
gint i, j, height;
gint width, row_stride, row_wrap;
gint pixel_stride;
const guint8 *table = gamma->gamma_table;
gint offsets[3];
gint r, g, b;
gint y, u, v;
offsets[0] = gst_video_format_get_component_offset (gamma->format, 0,
gamma->width, gamma->height);
offsets[1] = gst_video_format_get_component_offset (gamma->format, 1,
gamma->width, gamma->height);
offsets[2] = gst_video_format_get_component_offset (gamma->format, 2,
gamma->width, gamma->height);
width = gst_video_format_get_component_width (gamma->format, 0, gamma->width);
height = gst_video_format_get_component_height (gamma->format, 0,
gamma->height);
row_stride = gst_video_format_get_row_stride (gamma->format, 0, gamma->width);
pixel_stride = gst_video_format_get_pixel_stride (gamma->format, 0);
row_wrap = row_stride - pixel_stride * width;
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
r = data[offsets[0]];
g = data[offsets[1]];
b = data[offsets[2]];
y = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 0, r, g, b);
u = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 1, r, g, b);
v = APPLY_MATRIX (cog_rgb_to_ycbcr_matrix_8bit_sdtv, 2, r, g, b);
y = table[CLAMP (y, 0, 255)];
r = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 0, y, u, v);
g = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 1, y, u, v);
b = APPLY_MATRIX (cog_ycbcr_to_rgb_matrix_8bit_sdtv, 2, y, u, v);
data[offsets[0]] = CLAMP (r, 0, 255);
data[offsets[1]] = CLAMP (g, 0, 255);
data[offsets[2]] = CLAMP (b, 0, 255);
data += pixel_stride;
}
data += row_wrap;
}
}
static gboolean
gst_gamma_set_caps (GstBaseTransform * base, GstCaps * incaps,
GstCaps * outcaps)
@ -285,6 +357,18 @@ gst_gamma_set_caps (GstBaseTransform * base, GstCaps * incaps,
case GST_VIDEO_FORMAT_YVYU:
gamma->process = gst_gamma_packed_yuv_ip;
break;
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
gamma->process = gst_gamma_packed_rgb_ip;
break;
default:
goto invalid_caps;
break;