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authorRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>2013-08-02 22:42:51 (GMT)
committerGregor Jasny <gjasny@googlemail.com>2014-01-13 19:55:07 (GMT)
commitd2cf7eb136586b638941a238ae68cfc7ef1ecb19 (patch)
tree1bbfe9461f8bea4da542a60df7b393e0c3ab7eba
parent9c2f5d5fc043977b77cdd17b8240f9afeda2fc25 (diff)
libv4lconvert: Support for Y16 pixel format
This patch adds support for V4L2_PIX_FMT_Y16 format. Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: Gregor Jasny <gjasny@googlemail.com> (cherry picked from commit 45ed09604578158c9c86327f678a68f854b5dba3)
-rw-r--r--lib/libv4lconvert/libv4lconvert-priv.h6
-rw-r--r--lib/libv4lconvert/libv4lconvert.c19
-rw-r--r--lib/libv4lconvert/rgbyuv.c30
3 files changed, 55 insertions, 0 deletions
diff --git a/lib/libv4lconvert/libv4lconvert-priv.h b/lib/libv4lconvert/libv4lconvert-priv.h
index c37e220..6422fdd 100644
--- a/lib/libv4lconvert/libv4lconvert-priv.h
+++ b/lib/libv4lconvert/libv4lconvert-priv.h
@@ -152,6 +152,12 @@ void v4lconvert_grey_to_rgb24(const unsigned char *src, unsigned char *dest,
void v4lconvert_grey_to_yuv420(const unsigned char *src, unsigned char *dest,
const struct v4l2_format *src_fmt);
+void v4lconvert_y16_to_rgb24(const unsigned char *src, unsigned char *dest,
+ int width, int height);
+
+void v4lconvert_y16_to_yuv420(const unsigned char *src, unsigned char *dest,
+ const struct v4l2_format *src_fmt);
+
int v4lconvert_y10b_to_rgb24(struct v4lconvert_data *data,
const unsigned char *src, unsigned char *dest, int width, int height);
diff --git a/lib/libv4lconvert/libv4lconvert.c b/lib/libv4lconvert/libv4lconvert.c
index 60010f1..bc5e34f 100644
--- a/lib/libv4lconvert/libv4lconvert.c
+++ b/lib/libv4lconvert/libv4lconvert.c
@@ -128,6 +128,7 @@ static const struct v4lconvert_pixfmt supported_src_pixfmts[] = {
{ V4L2_PIX_FMT_Y4, 8, 20, 20, 0 },
{ V4L2_PIX_FMT_Y6, 8, 20, 20, 0 },
{ V4L2_PIX_FMT_Y10BPACK, 10, 20, 20, 0 },
+ { V4L2_PIX_FMT_Y16, 16, 20, 20, 0 },
};
static const struct v4lconvert_pixfmt supported_dst_pixfmts[] = {
@@ -989,6 +990,24 @@ static int v4lconvert_convert_pixfmt(struct v4lconvert_data *data,
break;
}
+ case V4L2_PIX_FMT_Y16:
+ switch (dest_pix_fmt) {
+ case V4L2_PIX_FMT_RGB24:
+ case V4L2_PIX_FMT_BGR24:
+ v4lconvert_y16_to_rgb24(src, dest, width, height);
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ case V4L2_PIX_FMT_YVU420:
+ v4lconvert_y16_to_yuv420(src, dest, fmt);
+ break;
+ }
+ if (src_size < (width * height * 2)) {
+ V4LCONVERT_ERR("short y16 data frame\n");
+ errno = EPIPE;
+ result = -1;
+ }
+ break;
+
case V4L2_PIX_FMT_GREY:
case V4L2_PIX_FMT_Y4:
case V4L2_PIX_FMT_Y6:
diff --git a/lib/libv4lconvert/rgbyuv.c b/lib/libv4lconvert/rgbyuv.c
index d05abe9..bef034f 100644
--- a/lib/libv4lconvert/rgbyuv.c
+++ b/lib/libv4lconvert/rgbyuv.c
@@ -586,6 +586,36 @@ void v4lconvert_rgb565_to_yuv420(const unsigned char *src, unsigned char *dest,
}
}
+void v4lconvert_y16_to_rgb24(const unsigned char *src, unsigned char *dest,
+ int width, int height)
+{
+ int j;
+ while (--height >= 0) {
+ for (j = 0; j < width; j++) {
+ *dest++ = *src;
+ *dest++ = *src;
+ *dest++ = *src;
+ src+=2;
+ }
+ }
+}
+
+void v4lconvert_y16_to_yuv420(const unsigned char *src, unsigned char *dest,
+ const struct v4l2_format *src_fmt)
+{
+ int x, y;
+
+ /* Y */
+ for (y = 0; y < src_fmt->fmt.pix.height; y++)
+ for (x = 0; x < src_fmt->fmt.pix.width; x++){
+ *dest++ = *src;
+ src+=2;
+ }
+
+ /* Clear U/V */
+ memset(dest, 0x80, src_fmt->fmt.pix.width * src_fmt->fmt.pix.height / 2);
+}
+
void v4lconvert_grey_to_rgb24(const unsigned char *src, unsigned char *dest,
int width, int height)
{

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