Searched refs:subsampling (Results 1 – 14 of 14) sorted by relevance
/linux-5.19.10/Documentation/userspace-api/media/v4l/ |
D | yuv-formats.rst | 26 differences, is called chroma subsampling. 28 While many combinations of subsampling factors in the horizontal and vertical 29 direction are possible, common factors are 1 (no subsampling), 2 and 4, with 30 horizontal subsampling always larger than or equal to vertical subsampling. 33 - `4:4:4`: No subsampling 34 - `4:2:2`: Horizontal subsampling by 2, no vertical subsampling 35 - `4:2:0`: Horizontal subsampling by 2, vertical subsampling by 2 36 - `4:1:1`: Horizontal subsampling by 4, no vertical subsampling 37 - `4:1:0`: Horizontal subsampling by 4, vertical subsampling by 4 59 .. flat-table:: 4:2:2 subsampling, interstitially sited [all …]
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D | ext-ctrls-jpeg.rst | 26 The chroma subsampling factors describe how each component of an 40 - No chroma subsampling, each pixel has Y, Cr and Cb values.
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D | pixfmt-m420.rst | 16 M420 is a YUV format with ½ horizontal and vertical chroma subsampling
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D | pixfmt-yuv-planar.rst | 42 subsampling, the chroma line stride (in bytes) is thus equal to twice the luma 43 line stride. With horizontal subsampling by 2, the chroma line stride is equal 44 to the luma line stride. Vertical subsampling doesn't affect the line stride. 528 formats. The two chroma planes always use the same subsampling. 533 horizontal subsampling factor. Vertical subsampling doesn't affect the line
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D | pixfmt-packed-yuv.rst | 10 Cr components consecutively in memory. They may apply subsampling to the chroma
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D | ext-ctrls-codec-stateless.rst | 1755 - Vertical subsampling is enabled. 1758 - Horizontal subsampling is enabled.
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/linux-5.19.10/drivers/media/platform/samsung/s5p-jpeg/ |
D | jpeg-core.c | 56 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 68 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 80 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 92 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 104 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 116 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 128 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 140 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 152 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 164 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, [all …]
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D | jpeg-core.h | 169 int subsampling; member 231 unsigned short subsampling; member
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/linux-5.19.10/drivers/media/platform/renesas/ |
D | rcar_jpu.c | 229 unsigned char subsampling; member 249 u8 subsampling; member 1082 u8 subsampling = jpu_parse_hdr(buffer, buf_size, &width, in jpu_buf_queue() local 1086 if (subsampling != JPU_JPEG_422 && subsampling != JPU_JPEG_420) in jpu_buf_queue() 1106 jpu_buf->subsampling = subsampling; in jpu_buf_queue() 1142 *(buffer + JPU_JPEG_SUBS_OFFSET) = q_data->fmtinfo->subsampling; in jpu_buf_finish() 1353 unsigned char num_planes, subsampling; in jpu_device_run() local 1381 subsampling = q_data->fmtinfo->subsampling; in jpu_device_run() 1398 if (subsampling == JPU_JPEG_420) { in jpu_device_run() 1445 if (jpu_buf->subsampling != subsampling) { in jpu_device_run()
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/linux-5.19.10/include/media/ |
D | v4l2-jpeg.h | 62 enum v4l2_jpeg_chroma_subsampling subsampling; member
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/linux-5.19.10/drivers/media/platform/nxp/imx-jpeg/ |
D | mxc-jpeg.c | 70 .subsampling = -1, 78 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 90 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 102 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420, 114 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 126 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 138 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY, 1287 if (mxc_formats[i].subsampling == header->frame.subsampling && in mxc_jpeg_get_image_format() 1297 header->frame.subsampling, in mxc_jpeg_get_image_format() 1323 } else if (q->fmt->subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_420) { in mxc_jpeg_bytesperline() [all …]
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D | mxc-jpeg.h | 57 enum v4l2_jpeg_chroma_subsampling subsampling; member
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/linux-5.19.10/drivers/media/platform/chips-media/ |
D | coda-jpeg.c | 396 switch (header.frame.subsampling) { in coda_jpeg_decode_header() 399 ctx->params.jpeg_chroma_subsampling = header.frame.subsampling; in coda_jpeg_decode_header() 403 header.frame.subsampling); in coda_jpeg_decode_header() 956 static unsigned char subsampling[5][3] = { in coda9_jpeg_encode_header() local 968 ret = coda_jpeg_put_byte(subsampling[chroma_format][i], in coda9_jpeg_encode_header()
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/linux-5.19.10/drivers/media/v4l2-core/ |
D | v4l2-jpeg.c | 227 frame_header->subsampling = subs; in jpeg_parse_frame_header()
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