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qcam: format_converter: Add RGB formats support

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Add support for the RGB format supported by VIMC (V4L2_PIX_FMT_BGR24,
V4L2_PIX_FMT_RGB24 and V4L2_PIX_FMT_ARGB32).

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
2019-05-01 04:59:54 +03:00
parent 977cfbd526
commit 28382ff2b1
2 changed files with 59 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
src/qcam/format_converter.cpp
View File

@@ -31,23 +31,49 @@ int FormatConverter::configure(unsigned int format, unsigned int width,
unsigned int height)
{
switch (format) {
case V4L2_PIX_FMT_BGR24:
yuv_ = false;
r_pos_ = 2;
g_pos_ = 1;
b_pos_ = 0;
bpp_ = 3;
break;
case V4L2_PIX_FMT_RGB24:
yuv_ = false;
r_pos_ = 0;
g_pos_ = 1;
b_pos_ = 2;
bpp_ = 3;
break;
case V4L2_PIX_FMT_ARGB32:
yuv_ = false;
r_pos_ = 1;
g_pos_ = 2;
b_pos_ = 3;
bpp_ = 4;
break;
case V4L2_PIX_FMT_VYUY:
yuv_ = true;
y_pos_ = 1;
cb_pos_ = 2;
break;
case V4L2_PIX_FMT_YVYU:
yuv_ = true;
y_pos_ = 0;
cb_pos_ = 3;
break;
case V4L2_PIX_FMT_UYVY:
yuv_ = true;
y_pos_ = 1;
cb_pos_ = 0;
break;
case V4L2_PIX_FMT_YUYV:
yuv_ = true;
y_pos_ = 0;
cb_pos_ = 1;
break;
case V4L2_PIX_FMT_MJPEG:
yuv_ = false;
break;
default:
return -EINVAL;
@@ -65,8 +91,32 @@ void FormatConverter::convert(const unsigned char *src, size_t size,
{
if (format_ == V4L2_PIX_FMT_MJPEG)
dst->loadFromData(src, size, "JPEG");
else
else if (yuv_)
convertYUV(src, dst->bits());
else
convertRGB(src, dst->bits());
}
void FormatConverter::convertRGB(const unsigned char *src, unsigned char *dst)
{
unsigned int x, y;
int r, g, b;
for (y = 0; y < height_; y++) {
for (x = 0; x < width_; x++) {
r = src[bpp_ * x + r_pos_];
g = src[bpp_ * x + g_pos_];
b = src[bpp_ * x + b_pos_];
dst[4 * x + 0] = b;
dst[4 * x + 1] = g;
dst[4 * x + 2] = r;
dst[4 * x + 3] = 0xff;
}
src += width_ * bpp_;
dst += width_ * 4;
}
}
static void yuv_to_rgb(int y, int u, int v, int *r, int *g, int *b)

8
src/qcam/format_converter.h
View File

@@ -20,11 +20,19 @@ public:
void convert(const unsigned char *src, size_t size, QImage *dst);
private:
void convertRGB(const unsigned char *src, unsigned char *dst);
void convertYUV(const unsigned char *src, unsigned char *dst);
unsigned int format_;
unsigned int width_;
unsigned int height_;
unsigned int bpp_;
unsigned int r_pos_;
unsigned int g_pos_;
unsigned int b_pos_;
bool yuv_;
unsigned int y_pos_;
unsigned int cb_pos_;
};