PawletOS/external_libcamera
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qcam: format_converter: Rename YUV and NV to YUVPacked and YUVSemiPlanar

Browse Source 
To prepare for fully-planar YUV support, rename the existing format
families YUV and NV to YUVPacked and YUVSemiPlanar respectively.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
This commit is contained in:
Laurent Pinchart
2021-09-06 22:20:49 +03:00
parent 4abbd832fe
commit 3a4e251122
2 changed files with 82 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

156
src/qcam/format_converter.cpp
View File

@@ -34,37 +34,37 @@ int FormatConverter::configure(const libcamera::PixelFormat &format,
{
switch (format) {
case libcamera::formats::NV12:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 2;
vertSubSample_ = 2;
nvSwap_ = false;
break;
case libcamera::formats::NV21:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 2;
vertSubSample_ = 2;
nvSwap_ = true;
break;
case libcamera::formats::NV16:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 2;
vertSubSample_ = 1;
nvSwap_ = false;
break;
case libcamera::formats::NV61:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 2;
vertSubSample_ = 1;
nvSwap_ = true;
break;
case libcamera::formats::NV24:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 1;
vertSubSample_ = 1;
nvSwap_ = false;
break;
case libcamera::formats::NV42:
formatFamily_ = NV;
formatFamily_ = YUVSemiPlanar;
horzSubSample_ = 1;
vertSubSample_ = 1;
nvSwap_ = true;
@@ -121,22 +121,22 @@ int FormatConverter::configure(const libcamera::PixelFormat &format,
break;
case libcamera::formats::VYUY:
formatFamily_ = YUV;
formatFamily_ = YUVPacked;
y_pos_ = 1;
cb_pos_ = 2;
break;
case libcamera::formats::YVYU:
formatFamily_ = YUV;
formatFamily_ = YUVPacked;
y_pos_ = 0;
cb_pos_ = 3;
break;
case libcamera::formats::UYVY:
formatFamily_ = YUV;
formatFamily_ = YUVPacked;
y_pos_ = 1;
cb_pos_ = 0;
break;
case libcamera::formats::YUYV:
formatFamily_ = YUV;
formatFamily_ = YUVPacked;
y_pos_ = 0;
cb_pos_ = 1;
break;
@@ -163,14 +163,14 @@ void FormatConverter::convert(const Image *src, size_t size, QImage *dst)
case MJPEG:
dst->loadFromData(src->data(0).data(), size, "JPEG");
break;
case YUV:
convertYUV(src, dst->bits());
break;
case RGB:
convertRGB(src, dst->bits());
break;
case NV:
convertNV(src, dst->bits());
case YUVPacked:
convertYUVPacked(src, dst->bits());
break;
case YUVSemiPlanar:
convertYUVSemiPlanar(src, dst->bits());
break;
};
}
@@ -185,7 +185,69 @@ static void yuv_to_rgb(int y, int u, int v, int *r, int *g, int *b)
*b = CLIP(( 298 * c + 516 * d + 128) >> RGBSHIFT);
}
void FormatConverter::convertNV(const Image *srcImage, unsigned char *dst)
void FormatConverter::convertRGB(const Image *srcImage, unsigned char *dst)
{
const unsigned char *src = srcImage->data(0).data();
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 += stride_;
dst += width_ * 4;
}
}
void FormatConverter::convertYUVPacked(const Image *srcImage, unsigned char *dst)
{
const unsigned char *src = srcImage->data(0).data();
unsigned int src_x, src_y, dst_x, dst_y;
unsigned int src_stride;
unsigned int dst_stride;
unsigned int cr_pos;
int r, g, b, y, cr, cb;
cr_pos = (cb_pos_ + 2) % 4;
src_stride = stride_;
dst_stride = width_ * 4;
for (src_y = 0, dst_y = 0; dst_y < height_; src_y++, dst_y++) {
for (src_x = 0, dst_x = 0; dst_x < width_; ) {
cb = src[src_y * src_stride + src_x * 4 + cb_pos_];
cr = src[src_y * src_stride + src_x * 4 + cr_pos];
y = src[src_y * src_stride + src_x * 4 + y_pos_];
yuv_to_rgb(y, cb, cr, &r, &g, &b);
dst[dst_y * dst_stride + 4 * dst_x + 0] = b;
dst[dst_y * dst_stride + 4 * dst_x + 1] = g;
dst[dst_y * dst_stride + 4 * dst_x + 2] = r;
dst[dst_y * dst_stride + 4 * dst_x + 3] = 0xff;
dst_x++;
y = src[src_y * src_stride + src_x * 4 + y_pos_ + 2];
yuv_to_rgb(y, cb, cr, &r, &g, &b);
dst[dst_y * dst_stride + 4 * dst_x + 0] = b;
dst[dst_y * dst_stride + 4 * dst_x + 1] = g;
dst[dst_y * dst_stride + 4 * dst_x + 2] = r;
dst[dst_y * dst_stride + 4 * dst_x + 3] = 0xff;
dst_x++;
src_x++;
}
}
}
void FormatConverter::convertYUVSemiPlanar(const Image *srcImage, unsigned char *dst)
{
unsigned int c_stride = stride_ * (2 / horzSubSample_);
unsigned int c_inc = horzSubSample_ == 1 ? 2 : 0;
@@ -225,65 +287,3 @@ void FormatConverter::convertNV(const Image *srcImage, unsigned char *dst)
}
}
}
void FormatConverter::convertRGB(const Image *srcImage, unsigned char *dst)
{
const unsigned char *src = srcImage->data(0).data();
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 += stride_;
dst += width_ * 4;
}
}
void FormatConverter::convertYUV(const Image *srcImage, unsigned char *dst)
{
const unsigned char *src = srcImage->data(0).data();
unsigned int src_x, src_y, dst_x, dst_y;
unsigned int src_stride;
unsigned int dst_stride;
unsigned int cr_pos;
int r, g, b, y, cr, cb;
cr_pos = (cb_pos_ + 2) % 4;
src_stride = stride_;
dst_stride = width_ * 4;
for (src_y = 0, dst_y = 0; dst_y < height_; src_y++, dst_y++) {
for (src_x = 0, dst_x = 0; dst_x < width_; ) {
cb = src[src_y * src_stride + src_x * 4 + cb_pos_];
cr = src[src_y * src_stride + src_x * 4 + cr_pos];
y = src[src_y * src_stride + src_x * 4 + y_pos_];
yuv_to_rgb(y, cb, cr, &r, &g, &b);
dst[dst_y * dst_stride + 4 * dst_x + 0] = b;
dst[dst_y * dst_stride + 4 * dst_x + 1] = g;
dst[dst_y * dst_stride + 4 * dst_x + 2] = r;
dst[dst_y * dst_stride + 4 * dst_x + 3] = 0xff;
dst_x++;
y = src[src_y * src_stride + src_x * 4 + y_pos_ + 2];
yuv_to_rgb(y, cb, cr, &r, &g, &b);
dst[dst_y * dst_stride + 4 * dst_x + 0] = b;
dst[dst_y * dst_stride + 4 * dst_x + 1] = g;
dst[dst_y * dst_stride + 4 * dst_x + 2] = r;
dst[dst_y * dst_stride + 4 * dst_x + 3] = 0xff;
dst_x++;
src_x++;
}
}
}

8
src/qcam/format_converter.h
View File

@@ -27,14 +27,14 @@ public:
private:
enum FormatFamily {
MJPEG,
NV,
RGB,
YUV,
YUVPacked,
YUVSemiPlanar,
};
void convertNV(const Image *src, unsigned char *dst);
void convertRGB(const Image *src, unsigned char *dst);
void convertYUV(const Image *src, unsigned char *dst);
void convertYUVPacked(const Image *src, unsigned char *dst);
void convertYUVSemiPlanar(const Image *src, unsigned char *dst);
libcamera::PixelFormat format_;
unsigned int width_;