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videoconvert: use video helper function

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Use the video helper function to get the offset and scale of a format.
This commit is contained in:
Wim Taymans 2012-07-16 11:18:54 +02:00
parent fec11c7809
commit 3d8636a662
1 changed files with 30 additions and 69 deletions
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99
gst/videoconvert/videoconvert.c
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@ -193,55 +193,6 @@ matrix_identity (VideoConvert * convert)
/* do nothing */
}
static void
get_offset_scale (const GstVideoFormatInfo * finfo, GstVideoColorRange range,
gint depth, gint offset[4], gint scale[4])
{
gint minL, minC, baseL, baseC, maxL, maxC;
if (depth < 8)
depth = 8;
switch (range) {
default:
case GST_VIDEO_COLOR_RANGE_0_255:
minL = minC = 0;
baseL = 0;
baseC = 128 << (depth - 8);
maxL = (1 << depth) - 1;
maxC = (1 << depth) - 1;
break;
case GST_VIDEO_COLOR_RANGE_16_235:
minL = 16 << (depth - 8);
minC = 16 << (depth - 8);
baseL = minL;
baseC = 128 << (depth - 8);
maxL = 235 << (depth - 8);
maxC = 240 << (depth - 8);
break;
}
if (GST_VIDEO_FORMAT_INFO_IS_YUV (finfo) ||
GST_VIDEO_FORMAT_INFO_IS_GRAY (finfo)) {
offset[0] = 0;
offset[1] = baseL;
offset[2] = offset[3] = baseC;
scale[0] = 0;
scale[1] = maxL - minL;
scale[2] = scale[3] = maxC - minC;
} else if (GST_VIDEO_FORMAT_INFO_IS_RGB (finfo)) {
offset[0] = 0;
offset[1] = offset[2] = offset[3] = baseL;
scale[0] = 0;
scale[1] = scale[2] = scale[3] = maxL - minL;
} else {
offset[0] = offset[1] = offset[2] = offset[3] = 0;
scale[0] = scale[1] = scale[2] = scale[3] = (maxL - minL);
}
GST_DEBUG ("scale: %d %d %d %d", scale[0], scale[1], scale[2], scale[3]);
GST_DEBUG ("offset: %d %d %d %d", offset[0], offset[1], offset[2], offset[3]);
}
static gboolean
get_Kr_Kb (GstVideoColorMatrix matrix, gdouble * Kr, gdouble * Kb)
{
@ -282,7 +233,7 @@ videoconvert_convert_compute_matrix (VideoConvert * convert)
ColorMatrix dst;
gint i, j;
const GstVideoFormatInfo *sfinfo, *dfinfo;
gint depth;
const GstVideoFormatInfo *suinfo, *duinfo;
gint offset[4], scale[4];
gdouble Kr = 0, Kb = 0;
@ -298,12 +249,13 @@ videoconvert_convert_compute_matrix (VideoConvert * convert)
if (dfinfo->pack_func == NULL)
goto no_pack_func;
convert->in_bits =
GST_VIDEO_FORMAT_INFO_DEPTH (gst_video_format_get_info
(sfinfo->unpack_format), 0);
convert->out_bits =
GST_VIDEO_FORMAT_INFO_DEPTH (gst_video_format_get_info
(dfinfo->unpack_format), 0);
suinfo = gst_video_format_get_info (sfinfo->unpack_format);
duinfo = gst_video_format_get_info (dfinfo->unpack_format);
convert->in_bits = GST_VIDEO_FORMAT_INFO_DEPTH (suinfo, 0);
convert->out_bits = GST_VIDEO_FORMAT_INFO_DEPTH (duinfo, 0);
GST_DEBUG ("in bits %d, out bits %d", convert->in_bits, convert->out_bits);
if (in_info->colorimetry.range == out_info->colorimetry.range &&
in_info->colorimetry.matrix == out_info->colorimetry.matrix) {
@ -313,21 +265,29 @@ videoconvert_convert_compute_matrix (VideoConvert * convert)
return TRUE;
}
if (convert->in_bits == 16 || convert->out_bits == 16)
depth = 16;
else
depth = 8;
/* calculate intermediate format for the matrix. When unpacking, we expand
* input to 16 when one of the inputs is 16 bits */
if (convert->in_bits == 16 || convert->out_bits == 16) {
if (GST_VIDEO_FORMAT_INFO_IS_RGB (suinfo))
suinfo = gst_video_format_get_info (GST_VIDEO_FORMAT_ARGB64);
else
suinfo = gst_video_format_get_info (GST_VIDEO_FORMAT_AYUV64);
GST_DEBUG ("depth: %d", depth);
if (GST_VIDEO_FORMAT_INFO_IS_RGB (duinfo))
duinfo = gst_video_format_get_info (GST_VIDEO_FORMAT_ARGB64);
else
duinfo = gst_video_format_get_info (GST_VIDEO_FORMAT_AYUV64);
}
color_matrix_set_identity (&dst);
/* 1, bring color components to [0..1.0] range */
get_offset_scale (sfinfo, in_info->colorimetry.range, depth, offset, scale);
color_matrix_offset_components (&dst, -offset[1], -offset[2], -offset[3]);
gst_video_color_range_offsets (in_info->colorimetry.range, suinfo, offset,
scale);
color_matrix_offset_components (&dst, -offset[0], -offset[1], -offset[2]);
color_matrix_scale_components (&dst, 1 / ((float) scale[1]),
1 / ((float) scale[2]), 1 / ((float) scale[3]));
color_matrix_scale_components (&dst, 1 / ((float) scale[0]),
1 / ((float) scale[1]), 1 / ((float) scale[2]));
/* 2. bring components to R'G'B' space */
if (get_Kr_Kb (in_info->colorimetry.matrix, &Kr, &Kb))
@ -346,11 +306,12 @@ videoconvert_convert_compute_matrix (VideoConvert * convert)
color_matrix_RGB_to_YCbCr (&dst, Kr, Kb);
/* 8, bring color components to nominal range */
get_offset_scale (dfinfo, out_info->colorimetry.range, depth, offset, scale);
color_matrix_scale_components (&dst, (float) scale[1], (float) scale[2],
(float) scale[3]);
gst_video_color_range_offsets (out_info->colorimetry.range, duinfo, offset,
scale);
color_matrix_scale_components (&dst, (float) scale[0], (float) scale[1],
(float) scale[2]);
color_matrix_offset_components (&dst, offset[1], offset[2], offset[3]);
color_matrix_offset_components (&dst, offset[0], offset[1], offset[2]);
/* because we're doing 8-bit matrix coefficients */
color_matrix_scale_components (&dst, 256.0, 256.0, 256.0);