Dwaine Garden a écrit : > Thierry, the patch looks good. I completed a lot of testing. > > http://linuxtv.org/hg/~tmerle/v4l-dvb-pre/rev/62903ced0d52 > > Dwaine > > Thanks Dwaine for testing this patch.
The full history: - when asking the driver RGB32, RGB24, RGB15, RGB16 formats, the picture has wrong colors (people are purple, ...). This comes from a YUV to RGB color conversion that was applied following the V4L spec http://www.linuxtv.org/downloads/video4linux/API/V4L2_API/spec/r2295.htm but pixel color values were put in reverse order (I don't know why). This patch fixes the byte order. Thierry --- a/linux/drivers/media/video/usbvision/usbvision-core.c Wed Jan 09 21:34:53 2008 +0100 +++ b/linux/drivers/media/video/usbvision/usbvision-core.c Thu Jan 10 22:20:34 2008 +0100 @@ -672,25 +672,29 @@ static enum ParseState usbvision_parse_l YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv); switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); - *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = bv; - *f++ = gv; - *f++ = rv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = bv; - *f++ = gv; - *f++ = rv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); - *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x07 & (gv >> 3)) | + (0xF8 & bv); + break; + case V4L2_PIX_FMT_RGB24: + *f++ = rv; + *f++ = gv; + *f++ = bv; + break; + case V4L2_PIX_FMT_RGB32: + *f++ = rv; + *f++ = gv; + *f++ = bv; + f++; + break; + case V4L2_PIX_FMT_RGB555: + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x03 & (gv >> 3)) | + (0x7C & (bv << 2)); + break; } } clipmask_index += clipmask_add; @@ -704,25 +708,29 @@ static enum ParseState usbvision_parse_l YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv); switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); - *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); - break; - case V4L2_PIX_FMT_RGB24: - *f++ = bv; - *f++ = gv; - *f++ = rv; - break; - case V4L2_PIX_FMT_RGB32: - *f++ = bv; - *f++ = gv; - *f++ = rv; - f++; - break; - case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); - *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x07 & (gv >> 3)) | + (0xF8 & bv); + break; + case V4L2_PIX_FMT_RGB24: + *f++ = rv; + *f++ = gv; + *f++ = bv; + break; + case V4L2_PIX_FMT_RGB32: + *f++ = rv; + *f++ = gv; + *f++ = bv; + f++; + break; + case V4L2_PIX_FMT_RGB555: + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x03 & (gv >> 3)) | + (0x7C & (bv << 2)); + break; } } clipmask_index += clipmask_add; @@ -990,22 +998,26 @@ static enum ParseState usbvision_parse_c *f++ = Y[Idx]; break; case V4L2_PIX_FMT_RGB555: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 2)); - *f++ = (0x03 & (gv >> 6)) | (0x7C & (rv >> 1)); + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x03 & (gv >> 3)) | + (0x7C & (bv << 2)); break; case V4L2_PIX_FMT_RGB565: - *f++ = (0x1F & (bv >> 3)) | (0xE0 & (gv << 3)); - *f++ = (0x07 & (gv >> 5)) | (0xF8 & rv); + *f++ = (0x1F & rv) | + (0xE0 & (gv << 5)); + *f++ = (0x07 & (gv >> 3)) | + (0xF8 & bv); break; case V4L2_PIX_FMT_RGB24: + *f++ = rv; + *f++ = gv; *f++ = bv; - *f++ = gv; - *f++ = rv; break; case V4L2_PIX_FMT_RGB32: + *f++ = rv; + *f++ = gv; *f++ = bv; - *f++ = gv; - *f++ = rv; f++; break; } @@ -1119,28 +1131,33 @@ static enum ParseState usbvision_parse_l r_ = (y_ + ur) >> 16; switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); - *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(b_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(r_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(b_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(r_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); - *f_even++ = (0x03 & ( g >> 6)) | - (0x7C & (LIMIT_RGB(r_) >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_even++ = + (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_even++ = + (0x07 & (g >> 3)) | + (0xF8 & LIMIT_RGB(b_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_even++ = LIMIT_RGB(r_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(b_); + break; + case V4L2_PIX_FMT_RGB32: + *f_even++ = LIMIT_RGB(r_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(b_); + f_even++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_even++ = (0x03 & (g >> 3)) | + (0x7C & (LIMIT_RGB(b_) << 2)); + break; } } clipmask_even_index += clipmask_add; @@ -1158,28 +1175,33 @@ static enum ParseState usbvision_parse_l r_ = (y_ + ur) >> 16; switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); - *f_even++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_even++ = LIMIT_RGB(b_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(r_); - break; - case V4L2_PIX_FMT_RGB32: - *f_even++ = LIMIT_RGB(b_); - *f_even++ = LIMIT_RGB(g_); - *f_even++ = LIMIT_RGB(r_); - f_even++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_even++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); - *f_even++ = (0x03 & ( g >> 6)) | - (0x7C & (LIMIT_RGB(r_) >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_even++ = + (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_even++ = + (0x07 & (g >> 3)) | + (0xF8 & LIMIT_RGB(b_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_even++ = LIMIT_RGB(r_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(b_); + break; + case V4L2_PIX_FMT_RGB32: + *f_even++ = LIMIT_RGB(r_); + *f_even++ = LIMIT_RGB(g_); + *f_even++ = LIMIT_RGB(b_); + f_even++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_even++ = (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_even++ = (0x03 & (g >> 3)) | + (0x7C & (LIMIT_RGB(b_) << 2)); + break; } } clipmask_even_index += clipmask_add; @@ -1199,28 +1221,33 @@ static enum ParseState usbvision_parse_l r_ = (y_ + ur) >> 16; switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); - *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(b_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(r_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(b_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(r_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); - *f_odd++ = (0x03 & ( g >> 6)) | - (0x7C & (LIMIT_RGB(r_) >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_odd++ = + (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_odd++ = + (0x07 & (g >> 3)) | + (0xF8 & LIMIT_RGB(b_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_odd++ = LIMIT_RGB(r_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(b_); + break; + case V4L2_PIX_FMT_RGB32: + *f_odd++ = LIMIT_RGB(r_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(b_); + f_odd++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_odd++ = (0x03 & (g >> 3)) | + (0x7C & (LIMIT_RGB(b_) << 2)); + break; } } clipmask_odd_index += clipmask_add; @@ -1238,28 +1265,33 @@ static enum ParseState usbvision_parse_l r_ = (y_ + ur) >> 16; switch (frame->v4l2_format.format) { - case V4L2_PIX_FMT_RGB565: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 3)); - *f_odd++ = (0x07 & ( g >> 5)) | (0xF8 & LIMIT_RGB(r_)); - break; - case V4L2_PIX_FMT_RGB24: - *f_odd++ = LIMIT_RGB(b_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(r_); - break; - case V4L2_PIX_FMT_RGB32: - *f_odd++ = LIMIT_RGB(b_); - *f_odd++ = LIMIT_RGB(g_); - *f_odd++ = LIMIT_RGB(r_); - f_odd++; - break; - case V4L2_PIX_FMT_RGB555: - g = LIMIT_RGB(g_); - *f_odd++ = (0x1F & (LIMIT_RGB(b_) >> 3)) | (0xE0 & (g << 2)); - *f_odd++ = (0x03 & ( g >> 6)) | - (0x7C & (LIMIT_RGB(r_) >> 1)); - break; + case V4L2_PIX_FMT_RGB565: + g = LIMIT_RGB(g_); + *f_odd++ = + (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_odd++ = + (0x07 & (g >> 3)) | + (0xF8 & LIMIT_RGB(b_)); + break; + case V4L2_PIX_FMT_RGB24: + *f_odd++ = LIMIT_RGB(r_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(b_); + break; + case V4L2_PIX_FMT_RGB32: + *f_odd++ = LIMIT_RGB(r_); + *f_odd++ = LIMIT_RGB(g_); + *f_odd++ = LIMIT_RGB(b_); + f_odd++; + break; + case V4L2_PIX_FMT_RGB555: + g = LIMIT_RGB(g_); + *f_odd++ = (0x1F & LIMIT_RGB(r_)) | + (0xE0 & (g << 5)); + *f_odd++ = (0x03 & (g >> 3)) | + (0x7C & (LIMIT_RGB(b_) << 2)); + break; } } clipmask_odd_index += clipmask_add; _______________________________________________ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
