#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
#include "csc.h"
/*
- * 16 coefficients in the order:
+ * 12 coefficients in the order:
* a0, b0, c0, a1, b1, c1, a2, b2, c2, d0, d1, d2
- * (we may need to pass non-default values from user space later on, we might
- * need to make the coefficient struct more easy to populate)
*/
-struct colorspace_coeffs {
- u16 sd[12];
- u16 hd[12];
+struct quantization {
+ u16 coeff[12];
};
-/* VIDEO_RANGE: limited range, GRAPHICS_RANGE: full range */
-#define CSC_COEFFS_VIDEO_RANGE_Y2R 0
-#define CSC_COEFFS_GRAPHICS_RANGE_Y2R 1
-#define CSC_COEFFS_VIDEO_RANGE_R2Y 2
-#define CSC_COEFFS_GRAPHICS_RANGE_R2Y 3
+struct colorspace {
+ struct quantization limited;
+ struct quantization full;
+};
+
+struct encoding_direction {
+ struct colorspace r601;
+ struct colorspace r709;
+};
+
+struct csc_coeffs {
+ struct encoding_direction y2r;
+ struct encoding_direction r2y;
+};
/* default colorspace coefficients */
-static struct colorspace_coeffs colorspace_coeffs[4] = {
- [CSC_COEFFS_VIDEO_RANGE_Y2R] = {
- {
- /* SDTV */
- 0x0400, 0x0000, 0x057D, 0x0400, 0x1EA7, 0x1D35,
- 0x0400, 0x06EF, 0x1FFE, 0x0D40, 0x0210, 0x0C88,
+static struct csc_coeffs csc_coeffs = {
+ .y2r = {
+ .r601 = {
+ .limited = {
+ { /* SDTV */
+ 0x0400, 0x0000, 0x057D, 0x0400, 0x1EA7, 0x1D35,
+ 0x0400, 0x06EF, 0x1FFE, 0x0D40, 0x0210, 0x0C88,
+ }
+ },
+ .full = {
+ { /* SDTV */
+ 0x04A8, 0x1FFE, 0x0662, 0x04A8, 0x1E6F, 0x1CBF,
+ 0x04A8, 0x0812, 0x1FFF, 0x0C84, 0x0220, 0x0BAC,
+ }
+ },
},
- {
- /* HDTV */
- 0x0400, 0x0000, 0x0629, 0x0400, 0x1F45, 0x1E2B,
- 0x0400, 0x0742, 0x0000, 0x0CEC, 0x0148, 0x0C60,
+ .r709 = {
+ .limited = {
+ { /* HDTV */
+ 0x0400, 0x0000, 0x0629, 0x0400, 0x1F45, 0x1E2B,
+ 0x0400, 0x0742, 0x0000, 0x0CEC, 0x0148, 0x0C60,
+ }
+ },
+ .full = {
+ { /* HDTV */
+ 0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE,
+ 0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C,
+ }
+ },
},
},
- [CSC_COEFFS_GRAPHICS_RANGE_Y2R] = {
- {
- /* SDTV */
- 0x04A8, 0x1FFE, 0x0662, 0x04A8, 0x1E6F, 0x1CBF,
- 0x04A8, 0x0812, 0x1FFF, 0x0C84, 0x0220, 0x0BAC,
+ .r2y = {
+ .r601 = {
+ .limited = {
+ { /* SDTV */
+ 0x0132, 0x0259, 0x0075, 0x1F50, 0x1EA5, 0x020B,
+ 0x020B, 0x1E4A, 0x1FAB, 0x0000, 0x0200, 0x0200,
+ }
+ },
+ .full = {
+ { /* SDTV */
+ 0x0107, 0x0204, 0x0064, 0x1F68, 0x1ED6, 0x01C2,
+ 0x01C2, 0x1E87, 0x1FB7, 0x0040, 0x0200, 0x0200,
+ }
+ },
},
- {
- /* HDTV */
- 0x04A8, 0x0000, 0x072C, 0x04A8, 0x1F26, 0x1DDE,
- 0x04A8, 0x0873, 0x0000, 0x0C20, 0x0134, 0x0B7C,
- },
- },
- [CSC_COEFFS_VIDEO_RANGE_R2Y] = {
- {
- /* SDTV */
- 0x0132, 0x0259, 0x0075, 0x1F50, 0x1EA5, 0x020B,
- 0x020B, 0x1E4A, 0x1FAB, 0x0000, 0x0200, 0x0200,
- },
- {
- /* HDTV */
- 0x00DA, 0x02DC, 0x004A, 0x1F88, 0x1E6C, 0x020C,
- 0x020C, 0x1E24, 0x1FD0, 0x0000, 0x0200, 0x0200,
- },
- },
- [CSC_COEFFS_GRAPHICS_RANGE_R2Y] = {
- {
- /* SDTV */
- 0x0107, 0x0204, 0x0064, 0x1F68, 0x1ED6, 0x01C2,
- 0x01C2, 0x1E87, 0x1FB7, 0x0040, 0x0200, 0x0200,
- },
- {
- /* HDTV */
- 0x00bb, 0x0275, 0x003f, 0x1f99, 0x1ea5, 0x01c2,
- 0x01c2, 0x1e67, 0x1fd7, 0x0040, 0x0200, 0x0200,
+ .r709 = {
+ .limited = {
+ { /* HDTV */
+ 0x00DA, 0x02DC, 0x004A, 0x1F88, 0x1E6C, 0x020C,
+ 0x020C, 0x1E24, 0x1FD0, 0x0000, 0x0200, 0x0200,
+ }
+ },
+ .full = {
+ { /* HDTV */
+ 0x00bb, 0x0275, 0x003f, 0x1f99, 0x1ea5, 0x01c2,
+ 0x01c2, 0x1e67, 0x1fd7, 0x0040, 0x0200, 0x0200,
+ }
+ },
},
},
+
};
void csc_dump_regs(struct csc_data *csc)
* set the color space converter coefficient shadow register values
*/
void csc_set_coeff(struct csc_data *csc, u32 *csc_reg0,
- enum v4l2_colorspace src_colorspace,
- enum v4l2_colorspace dst_colorspace)
+ struct v4l2_format *src_fmt, struct v4l2_format *dst_fmt)
{
u32 *csc_reg5 = csc_reg0 + 5;
u32 *shadow_csc = csc_reg0;
- struct colorspace_coeffs *sd_hd_coeffs;
u16 *coeff, *end_coeff;
- enum v4l2_colorspace yuv_colorspace;
- int sel = 0;
-
- /*
- * support only graphics data range(full range) for now, a control ioctl
- * would be nice here
- */
- /* Y2R */
- if (dst_colorspace == V4L2_COLORSPACE_SRGB &&
- (src_colorspace == V4L2_COLORSPACE_SMPTE170M ||
- src_colorspace == V4L2_COLORSPACE_REC709)) {
+ const struct v4l2_pix_format *pix;
+ const struct v4l2_pix_format_mplane *mp;
+ const struct v4l2_format_info *src_finfo, *dst_finfo;
+ enum v4l2_ycbcr_encoding src_ycbcr_enc, dst_ycbcr_enc;
+ enum v4l2_quantization src_quantization, dst_quantization;
+ u32 src_pixelformat, dst_pixelformat;
+
+ switch (src_fmt->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ pix = &src_fmt->fmt.pix;
+ src_pixelformat = pix->pixelformat;
+ src_ycbcr_enc = pix->ycbcr_enc;
+ src_quantization = pix->quantization;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ default:
+ mp = &src_fmt->fmt.pix_mp;
+ src_pixelformat = mp->pixelformat;
+ src_ycbcr_enc = mp->ycbcr_enc;
+ src_quantization = mp->quantization;
+ break;
+ }
+
+ switch (dst_fmt->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ pix = &dst_fmt->fmt.pix;
+ dst_pixelformat = pix->pixelformat;
+ dst_ycbcr_enc = pix->ycbcr_enc;
+ dst_quantization = pix->quantization;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
+ default:
+ mp = &dst_fmt->fmt.pix_mp;
+ dst_pixelformat = mp->pixelformat;
+ dst_ycbcr_enc = mp->ycbcr_enc;
+ dst_quantization = mp->quantization;
+ break;
+ }
+
+ src_finfo = v4l2_format_info(src_pixelformat);
+ dst_finfo = v4l2_format_info(dst_pixelformat);
+
+ if (v4l2_is_format_yuv(src_finfo) &&
+ v4l2_is_format_rgb(dst_finfo)) {
/* Y2R */
- sel = 1;
- yuv_colorspace = src_colorspace;
- } else if ((dst_colorspace == V4L2_COLORSPACE_SMPTE170M ||
- dst_colorspace == V4L2_COLORSPACE_REC709) &&
- src_colorspace == V4L2_COLORSPACE_SRGB) {
+
+ /*
+ * These are not the standard default values but are
+ * set this way for historical compatibility
+ */
+ if (src_ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+ src_ycbcr_enc = V4L2_YCBCR_ENC_601;
+
+ if (src_quantization == V4L2_QUANTIZATION_DEFAULT)
+ src_quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ if (src_ycbcr_enc == V4L2_YCBCR_ENC_601) {
+ if (src_quantization == V4L2_QUANTIZATION_FULL_RANGE)
+ coeff = csc_coeffs.y2r.r601.full.coeff;
+ else
+ coeff = csc_coeffs.y2r.r601.limited.coeff;
+ } else if (src_ycbcr_enc == V4L2_YCBCR_ENC_709) {
+ if (src_quantization == V4L2_QUANTIZATION_FULL_RANGE)
+ coeff = csc_coeffs.y2r.r709.full.coeff;
+ else
+ coeff = csc_coeffs.y2r.r709.limited.coeff;
+ } else {
+ /* Should never reach this, but it keeps gcc happy */
+ coeff = csc_coeffs.y2r.r601.full.coeff;
+ }
+ } else if (v4l2_is_format_rgb(src_finfo) &&
+ v4l2_is_format_yuv(dst_finfo)) {
/* R2Y */
- sel = 3;
- yuv_colorspace = dst_colorspace;
+
+ /*
+ * These are not the standard default values but are
+ * set this way for historical compatibility
+ */
+ if (dst_ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT)
+ dst_ycbcr_enc = V4L2_YCBCR_ENC_601;
+
+ if (dst_quantization == V4L2_QUANTIZATION_DEFAULT)
+ dst_quantization = V4L2_QUANTIZATION_FULL_RANGE;
+
+ if (dst_ycbcr_enc == V4L2_YCBCR_ENC_601) {
+ if (dst_quantization == V4L2_QUANTIZATION_FULL_RANGE)
+ coeff = csc_coeffs.r2y.r601.full.coeff;
+ else
+ coeff = csc_coeffs.r2y.r601.limited.coeff;
+ } else if (dst_ycbcr_enc == V4L2_YCBCR_ENC_709) {
+ if (dst_quantization == V4L2_QUANTIZATION_FULL_RANGE)
+ coeff = csc_coeffs.r2y.r709.full.coeff;
+ else
+ coeff = csc_coeffs.r2y.r709.limited.coeff;
+ } else {
+ /* Should never reach this, but it keeps gcc happy */
+ coeff = csc_coeffs.y2r.r601.full.coeff;
+ }
} else {
*csc_reg5 |= CSC_BYPASS;
return;
}
- sd_hd_coeffs = &colorspace_coeffs[sel];
-
- /* select between SD or HD coefficients */
- if (yuv_colorspace == V4L2_COLORSPACE_SMPTE170M)
- coeff = sd_hd_coeffs->sd;
- else
- coeff = sd_hd_coeffs->hd;
-
end_coeff = coeff + 12;
for (; coeff < end_coeff; coeff += 2)
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