@@ -159,7 +159,7 @@ whatever). Otherwise the device numbers can get confusing. The ivtv
Read-only
The raw YUV video output from the current video input. The YUV format
- is non-standard (V4L2_PIX_FMT_HM12).
+ is a 16x16 linear tiled NV12 format (V4L2_PIX_FMT_NV12_16L16)
Note that the YUV and PCM streams are not synchronized, so they are of
limited use.
@@ -7,9 +7,7 @@ Non-compressed file format
--------------------------
The cx23416 can produce (and the cx23415 can also read) raw YUV output. The
-format of a YUV frame is specific to this chip and is called HM12. 'HM' stands
-for 'Hauppauge Macroblock', which is a misnomer as 'Conexant Macroblock' would
-be more accurate.
+format of a YUV frame is 16x16 linear tiled NV12 (V4L2_PIX_FMT_NV12_16L16).
The format is YUV 4:2:0 which uses 1 Y byte per pixel and 1 U and V byte per
four pixels.
@@ -34,8 +32,8 @@ second line of 8 UV pairs of the top-left block, etc. After transmitting
this block the first line of the block on the right to the first block is
transmitted, etc.
-The code below is given as an example on how to convert HM12 to separate
-Y, U and V planes. This code assumes frames of 720x576 (PAL) pixels.
+The code below is given as an example on how to convert V4L2_PIX_FMT_NV12_16L16
+to separate Y, U and V planes. This code assumes frames of 720x576 (PAL) pixels.
The width of a frame is always 720 pixels, regardless of the actual specified
width.
@@ -48,14 +48,6 @@ please make a proposal on the linux-media mailing list.
- ``V4L2_PIX_FMT_HI240``
- 'HI24'
- 8 bit RGB format used by the BTTV driver.
- * .. _V4L2-PIX-FMT-HM12:
-
- - ``V4L2_PIX_FMT_HM12``
- - 'HM12'
- - YUV 4:2:0 format used by the IVTV driver.
-
- The format is documented in the kernel sources in the file
- ``Documentation/userspace-api/media/drivers/cx2341x-uapi.rst``
* .. _V4L2-PIX-FMT-CPIA1:
- ``V4L2_PIX_FMT_CPIA1``
@@ -254,6 +254,7 @@ of the luma plane.
.. _V4L2-PIX-FMT-NV12MT:
.. _V4L2-PIX-FMT-NV12MT-16X16:
+.. _V4L2-PIX-FMT-NV12-16L16:
.. _V4L2-PIX-FMT-NV12-32L32:
Tiled NV12
@@ -278,6 +279,11 @@ If the vertical resolution is an odd number of macroblocks, the last row of
macroblocks is stored in linear order. The layouts of the luma and chroma
planes are identical.
+``V4L2_PIX_FMT_NV12_16L16`` stores pixel in 16x16 tiles, and stores
+tiles linearly in memory. The line stride and image height must be
+aligned to a multiple of 16. The layouts of the luma and chroma planes are
+identical.
+
``V4L2_PIX_FMT_NV12_32L32`` stores pixel in 32x32 tiles, and stores
tiles linearly in memory. The line stride and image height must be
aligned to a multiple of 32. The layouts of the luma and chroma planes are
@@ -187,6 +187,7 @@ replace define V4L2_CAP_IO_MC device-capabilities
# V4L2 pix flags
replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format`
replace define V4L2_PIX_FMT_FLAG_PREMUL_ALPHA format-flags
+replace define V4L2_PIX_FMT_HM12 :c:type:`v4l2_pix_format`
replace define V4L2_PIX_FMT_SUNXI_TILED_NV12 :c:type:`v4l2_pix_format`
# V4L2 format flags
@@ -276,7 +276,7 @@ static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
s->pixelformat = fmt->fmt.pix.pixelformat;
/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
- if (s->pixelformat == V4L2_PIX_FMT_HM12) {
+ if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) {
s->vb_bytes_per_frame = h * 720 * 3 / 2;
s->vb_bytes_per_line = 720; /* First plane */
} else {
@@ -470,7 +470,7 @@ static int cx18_enum_fmt_vid_cap(struct file *file, void *fh,
.index = 0,
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.description = "HM12 (YUV 4:1:1)",
- .pixelformat = V4L2_PIX_FMT_HM12,
+ .pixelformat = V4L2_PIX_FMT_NV12_16L16,
},
{
.index = 1,
@@ -133,7 +133,7 @@ static int cx18_prepare_buffer(struct videobuf_queue *q,
/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
- if (s->pixelformat == V4L2_PIX_FMT_HM12)
+ if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
s->vb_bytes_per_frame = height * 720 * 3 / 2;
else
s->vb_bytes_per_frame = height * 720 * 2;
@@ -155,7 +155,7 @@ static int cx18_prepare_buffer(struct videobuf_queue *q,
/* HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
UYUV YUV size is (Y=(h*720) + UV=(h*(720))) */
- if (s->pixelformat == V4L2_PIX_FMT_HM12)
+ if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
s->vb_bytes_per_frame = height * 720 * 3 / 2;
else
s->vb_bytes_per_frame = height * 720 * 2;
@@ -287,7 +287,7 @@ static void cx18_stream_init(struct cx18 *cx, int type)
s, &cx->serialize_lock);
/* Assume the previous pixel default */
- s->pixelformat = V4L2_PIX_FMT_HM12;
+ s->pixelformat = V4L2_PIX_FMT_NV12_16L16;
s->vb_bytes_per_frame = cx->cxhdl.height * 720 * 3 / 2;
s->vb_bytes_per_line = 720;
}
@@ -733,7 +733,7 @@ static void cx18_stream_configure_mdls(struct cx18_stream *s)
* Set the MDL size to the exact size needed for one frame.
* Use enough buffers per MDL to cover the MDL size
*/
- if (s->pixelformat == V4L2_PIX_FMT_HM12)
+ if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16)
s->mdl_size = 720 * s->cx->cxhdl.height * 3 / 2;
else
s->mdl_size = 720 * s->cx->cxhdl.height * 2;
@@ -339,7 +339,7 @@ static int ivtv_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f
pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
pixfmt->field = V4L2_FIELD_INTERLACED;
if (id->type == IVTV_ENC_STREAM_TYPE_YUV) {
- pixfmt->pixelformat = V4L2_PIX_FMT_HM12;
+ pixfmt->pixelformat = V4L2_PIX_FMT_NV12_16L16;
/* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
pixfmt->bytesperline = 720;
@@ -417,7 +417,7 @@ static int ivtv_g_fmt_vid_out(struct file *file, void *fh, struct v4l2_format *f
pixfmt->field = V4L2_FIELD_ANY;
break;
}
- pixfmt->pixelformat = V4L2_PIX_FMT_HM12;
+ pixfmt->pixelformat = V4L2_PIX_FMT_NV12_16L16;
pixfmt->bytesperline = 720;
pixfmt->width = itv->yuv_info.v4l2_src_w;
pixfmt->height = itv->yuv_info.v4l2_src_h;
@@ -917,7 +917,7 @@ static int ivtv_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdes
static const struct v4l2_fmtdesc hm12 = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.description = "HM12 (YUV 4:2:0)",
- .pixelformat = V4L2_PIX_FMT_HM12,
+ .pixelformat = V4L2_PIX_FMT_NV12_16L16,
};
static const struct v4l2_fmtdesc mpeg = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
@@ -944,7 +944,7 @@ static int ivtv_enum_fmt_vid_out(struct file *file, void *fh, struct v4l2_fmtdes
static const struct v4l2_fmtdesc hm12 = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
.description = "HM12 (YUV 4:2:0)",
- .pixelformat = V4L2_PIX_FMT_HM12,
+ .pixelformat = V4L2_PIX_FMT_NV12_16L16,
};
static const struct v4l2_fmtdesc mpeg = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
@@ -61,7 +61,7 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
|| sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_BT656)
&& sdev->csi.v4l2_ep.bus.parallel.bus_width == 16) {
switch (pixformat) {
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV16:
@@ -124,7 +124,7 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
case V4L2_PIX_FMT_VYUY:
return (mbus_code == MEDIA_BUS_FMT_VYUY8_2X8);
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV16:
@@ -269,7 +269,7 @@ static enum csi_output_fmt get_csi_output_format(struct sun6i_csi_dev *sdev,
case V4L2_PIX_FMT_VYUY:
return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8;
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
return buf_interlaced ? CSI_FRAME_MB_YUV420 :
CSI_FIELD_MB_YUV420;
case V4L2_PIX_FMT_NV12:
@@ -311,7 +311,7 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
return 0;
switch (pixformat) {
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV16:
case V4L2_PIX_FMT_YUV420:
@@ -526,7 +526,7 @@ static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
planar_offset[0] = 0;
switch (config->pixelformat) {
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_NV16:
@@ -105,7 +105,7 @@ static inline int sun6i_csi_get_bpp(unsigned int pixformat)
case V4L2_PIX_FMT_SGBRG12:
case V4L2_PIX_FMT_SGRBG12:
case V4L2_PIX_FMT_SRGGB12:
- case V4L2_PIX_FMT_HM12:
+ case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV21:
case V4L2_PIX_FMT_YUV420:
@@ -48,7 +48,7 @@ static const u32 supported_pixformats[] = {
V4L2_PIX_FMT_YVYU,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_VYUY,
- V4L2_PIX_FMT_HM12,
+ V4L2_PIX_FMT_NV12_16L16,
V4L2_PIX_FMT_NV12,
V4L2_PIX_FMT_NV21,
V4L2_PIX_FMT_YUV420,
@@ -1274,7 +1274,6 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
- case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
@@ -1282,6 +1281,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
+ case V4L2_PIX_FMT_NV12_16L16: descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break;
case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break;
case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
@@ -601,7 +601,6 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_NV61 v4l2_fourcc('N', 'V', '6', '1') /* 16 Y/CrCb 4:2:2 */
#define V4L2_PIX_FMT_NV24 v4l2_fourcc('N', 'V', '2', '4') /* 24 Y/CbCr 4:4:4 */
#define V4L2_PIX_FMT_NV42 v4l2_fourcc('N', 'V', '4', '2') /* 24 Y/CrCb 4:4:4 */
-#define V4L2_PIX_FMT_HM12 v4l2_fourcc('H', 'M', '1', '2') /* 8 YUV 4:2:0 16x16 macroblocks */
/* two non contiguous planes - one Y, one Cr + Cb interleaved */
#define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 */
@@ -628,6 +627,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24 YVU444 planar */
/* Tiled YUV formats */
+#define V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 16x16 tiles */
#define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12 Y/CbCr 4:2:0 32x32 tiles */
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
@@ -2619,6 +2619,7 @@ struct v4l2_create_buffers {
/* Deprecated definitions kept for backwards compatibility */
#ifndef __KERNEL__
+#define V4L2_PIX_FMT_HM12 V4L2_PIX_FMT_NV12_16L16
#define V4L2_PIX_FMT_SUNXI_TILED_NV12 V4L2_PIX_FMT_NV12_32L32
#endif
The V4L2_PIX_FMT_HM12 format is actually a simple NV12 tiled format, with 16x16 linear tiles. Rename the format and move its documentation together with the other tiled NV12 formats. Keep V4L2_PIX_FMT_HM12 for application compatibility. Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> --- Documentation/admin-guide/media/ivtv.rst | 2 +- .../userspace-api/media/drivers/cx2341x-uapi.rst | 8 +++----- .../userspace-api/media/v4l/pixfmt-reserved.rst | 8 -------- .../userspace-api/media/v4l/pixfmt-yuv-planar.rst | 6 ++++++ .../userspace-api/media/videodev2.h.rst.exceptions | 1 + drivers/media/pci/cx18/cx18-ioctl.c | 4 ++-- drivers/media/pci/cx18/cx18-streams.c | 8 ++++---- drivers/media/pci/ivtv/ivtv-ioctl.c | 8 ++++---- drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 10 +++++----- drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h | 2 +- drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 2 +- drivers/media/v4l2-core/v4l2-ioctl.c | 2 +- include/uapi/linux/videodev2.h | 3 ++- 13 files changed, 31 insertions(+), 33 deletions(-)