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/linux/drivers/media/test-drivers/vicodec/
H A Dcodec-v4l2-fwht.c98 rf->luma = buf; in prepare_raw_frame()
111 rf->luma = NULL; in prepare_raw_frame()
123 rf->cb = rf->luma + size; in prepare_raw_frame()
127 rf->cr = rf->luma + size; in prepare_raw_frame()
131 rf->cb = rf->luma + size; in prepare_raw_frame()
137 rf->cb = rf->luma + size; in prepare_raw_frame()
143 rf->cr = rf->luma + size; in prepare_raw_frame()
147 rf->cb = rf->luma + 1; in prepare_raw_frame()
151 rf->cr = rf->luma + 1; in prepare_raw_frame()
155 rf->cb = rf->luma; in prepare_raw_frame()
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H A Dcodec-fwht.h61 * both luma and chroma components resolutions are rounded up to
96 u8 *luma, *cb, *cr, *alpha; member
/linux/Documentation/userspace-api/media/v4l/
H A Dpixfmt-yuv-planar.rst10 Planar formats split luma and chroma data in separate memory regions. They
13 - Semi-planar formats use two planes. The first plane is the luma plane and
22 the chroma planes may be constrained by the line stride of the luma plane.
36 use two planes, and store the luma components in the first plane and the chroma
42 chroma lines is identical to the padding of the luma lines. Without horizontal
43 subsampling, the chroma line stride (in bytes) is thus equal to twice the luma
45 to the luma line stride. Vertical subsampling doesn't affect the line stride.
48 relationship between the luma and chroma line padding and stride.
245 of bytes as luma lines, and the chroma plane contains half the number of lines
246 of the luma plane.
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H A Dcolorspaces.rst108 the so-called luma coefficients. There may be multiple possible Y'CbCr
110 prefer to use luma (Y') and chroma (CbCr) instead of R'G'B'. Since the
113 compared to the luma data. Note that the luma (Y') is unrelated to the Y
118 correct, it is just an encoding of an R'G'B' color into luma and chroma
147 luma coefficients needed to transform R'G'B' to Y'CbCr. While some
H A Dpixfmt-m420.rst18 (YUV 4:2:0). Pixels are organized as interleaved luma and chroma planes.
19 Two lines of luma data are followed by one line of chroma data.
21 The luma plane has one byte per pixel. The chroma plane contains
H A Dpixfmt-yuv-luma.rst4 .. _yuv-luma-only:
7 Luma-Only Formats
10 This family of formats only store the luma component of a Y'CbCr image. They
29 .. flat-table:: Luma-Only Image Formats
H A Dyuv-formats.rst25 components than for the luma component. This compression technique, taking
270 pixfmt-yuv-luma
/linux/drivers/media/platform/samsung/s5p-mfc/
H A Dregs-mfc.h99 /* reconstructed luma */
134 #define S5P_FIMV_ENC_REF_B_LUMA_ADR 0x062c /* ref B Luma addr */
137 #define S5P_FIMV_ENC_CUR_LUMA_ADR 0x0718 /* current Luma addr */
166 #define S5P_FIMV_SI_DISPLAY_Y_ADR 0x2010 /* luma addr of displayed pic */
173 #define S5P_FIMV_SI_DECODE_Y_ADR 0x2024 /* luma addr of decoded pic */
189 #define S5P_FIMV_CRC_LUMA0 0x2030 /* luma crc data per frame
193 #define S5P_FIMV_CRC_LUMA1 0x2038 /* luma crc data per bottom
273 luma pic */
279 #define S5P_FIMV_ENC_SI_CH0_CUR_Y_ADR 0x2050 /* current Luma addr */
285 #define S5P_FIMV_ENC_SI_CH1_CUR_Y_ADR 0x2090 /* current Luma addr */
/linux/drivers/gpu/drm/amd/display/dc/dcn30/
H A Ddcn30_mmhubbub.c109 /* buffer address for packing mode or Luma in planar mode */ in mmhubbub3_config_mcif_buf()
117 /* buffer address for packing mode or Luma in planar mode */ in mmhubbub3_config_mcif_buf()
125 /* buffer address for packing mode or Luma in planar mode */ in mmhubbub3_config_mcif_buf()
133 /* buffer address for packing mode or Luma in planar mode */ in mmhubbub3_config_mcif_buf()
141 /* setup luma & chroma size in mmhubbub3_config_mcif_buf()
142 * should be enough to contain a whole frame Luma data, in mmhubbub3_config_mcif_buf()
208 /* Set arbitration unit for Luma/Chroma */ in mmhubbub3_config_mcif_arb()
/linux/drivers/media/platform/ti/omap3isp/
H A Disppreview.h64 * @luma: Luma enhancement coefficients.
83 struct omap3isp_prev_luma luma; member
/linux/drivers/media/platform/st/sti/bdisp/
H A Dbdisp-reg.h50 /* 10 - Luma Filter */
206 #define BLT_TTY_CHROMA BIT(27) /* Write chroma / luma */
222 #define BLT_FCTL_Y_HV_SCALE 0x33000000 /* Luma version */
225 #define BLT_FCTL_Y_HV_SAMPLE 0x22000000 /* Luma version */
/linux/drivers/media/platform/st/sti/delta/
H A Ddelta-mjpeg-fw.h16 * @display_luma_p: address of the luma buffer
31 * @display_luma_p: address of the luma buffer
33 * @display_decimated_luma_p: address of the decimated luma buffer
/linux/drivers/video/fbdev/
H A Dsh_mobile_lcdcfb.h51 * @pan_y_offset: Panning linear offset in bytes (luma component)
52 * @base_addr_y: Frame buffer viewport base address (luma component)
/linux/drivers/media/platform/verisilicon/
H A Drockchip_vpu2_hw_jpeg_enc.c12 * luma and chroma quantization tables. The hardware does entropy
16 * In other words, only the luma and chroma quantization tables are
19 * Quantization luma table values are written to registers
/linux/drivers/media/usb/gspca/
H A Detoms.c81 /* base registers for luma calculation */
624 __u8 luma; in do_autogain() local
645 luma = LIMIT(r + g + b); in do_autogain()
646 gspca_dbg(gspca_dev, D_FRAM, "Etoms luma G %d\n", luma); in do_autogain()
647 if (luma < luma_mean - luma_delta || luma > luma_mean + luma_delta) { in do_autogain()
648 Gbright += (luma_mean - luma) >> spring; in do_autogain()
/linux/Documentation/userspace-api/
H A Ddma-buf-alloc-exchange.rst115 As a more complex example, ``DRM_FORMAT_NV12`` describes a format in which luma
152 ``DRM_FORMAT_NV12`` buffer has a luma plane containing 1920x1080 samples for the Y
164 where the luma plane's storage begins immediately at the start of the buffer
270 the luma and chroma buffers combined into a single memory buffer by use of the
286 ``DRM_FORMAT_NV12`` buffer. This will result in two memory planes (luma and
/linux/include/uapi/linux/
H A Domap3isp.h629 * struct omap3isp_prev_luma - Luma enhancement
630 * @table: Array for luma enhancement table.
641 * @luma: Pointer to luma enhancement structure.
660 struct omap3isp_prev_luma __user *luma; member
/linux/drivers/media/i2c/
H A Dadv7183_regs.h38 #define ADV7183_LUMA_GAIN_CTRL_1 0x2F /* Luma gain control 1 */
39 #define ADV7183_LUMA_GAIN_CTRL_2 0x30 /* Luma gain control 2 */
/linux/drivers/media/platform/ti/vpe/
H A Dsc_coeff.h30 /* Luma */
98 /* Luma */
166 /* Luma */
234 /* Luma */
302 /* Luma */
370 /* Luma */
438 /* Luma */
506 /* Luma */
574 /* Luma */
659 /* Luma */
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/linux/drivers/media/platform/chips-media/wave5/
H A Dwave5-regdefine.h249 /* compression offset table for luma */
256 /* compression offset table for luma */
263 /* compression offset table for luma */
270 /* compression offset table for luma */
277 /* compression offset table for luma */
284 /* compression offset table for luma */
291 /* compression offset table for luma */
298 /* compression offset table for luma */
/linux/drivers/gpu/drm/nouveau/dispnv04/
H A Doverlay.c220 u32 luma = (plane->brightness - 512) << 16 | plane->contrast; in nv10_set_params() local
225 nvif_wr32(dev, NV_PVIDEO_LUMINANCE(0), luma); in nv10_set_params()
226 nvif_wr32(dev, NV_PVIDEO_LUMINANCE(1), luma); in nv10_set_params()
/linux/drivers/media/platform/chips-media/coda/
H A Dcoda-jpeg.c49 /* DC Luma, DC Chroma, AC Luma, AC Chroma */
451 /* VAL Tables: DC Luma, DC Chroma, AC Luma, AC Chroma */ in coda9_jpeg_dec_huff_setup()
682 /* DC/AC Luma, DC/AC Chroma -> DC Luma/Chroma, AC Luma/Chroma */ in coda9_jpeg_gen_dec_huff_tab()
730 /* Generate all four (luma/chroma DC/AC) code/size lookup tables */ in coda9_jpeg_load_huff_tab()
/linux/drivers/gpu/drm/imx/dcss/
H A Ddcss-scaler.c502 * move chroma up to first luma line in dcss_scaler_fractions_set()
510 * move chroma up to first luma line in dcss_scaler_fractions_set()
659 /* horizontal luma */ in dcss_scaler_yuv_coef_set()
665 /* vertical luma */ in dcss_scaler_yuv_coef_set()
/linux/drivers/gpu/drm/amd/display/dc/dcn20/
H A Ddcn20_dwb.c107 DC_LOG_DWB("%s inst = %d, FAILED!LUMA SCALING NOT SUPPORTED", __func__, dwbc20->base.inst); in dwb2_enable()
166 DC_LOG_DWB("%s inst = %d, FAILED!LUMA SCALING NOT SUPPORTED", __func__, dwbc20->base.inst); in dwb2_update()
/linux/Documentation/devicetree/bindings/display/
H A Dallwinner,sun9i-a80-deu.yaml15 can sharpen the display content in both luma and chroma channels.

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