C++ (Cpp) vpif_get_default_field Examples

Example #1

/**
 * vpif_check_format()  - check given pixel format for compatibility
 * @ch - channel  ptr
 * @pixfmt - Given pixel format
 * @update - update the values as per hardware requirement
 *
 * Check the application pixel format for S_FMT and update the input
 * values as per hardware limits for TRY_FMT. The default pixel and
 * field format is selected based on interface type.
 */
static int vpif_check_format(struct channel_obj *ch,
			     struct v4l2_pix_format *pixfmt,
			     int update)
{
	struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
	struct vpif_params *vpif_params = &ch->vpifparams;
	enum v4l2_field field = pixfmt->field;
	u32 sizeimage, hpitch, vpitch;
	int ret = -EINVAL;

	vpif_dbg(2, debug, "vpif_check_format\n");
	/**
	 * first check for the pixel format. If if_type is Raw bayer,
	 * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only
	 * V4L2_PIX_FMT_YUV422P is supported
	 */
	if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
		if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
			if (!update) {
				vpif_dbg(2, debug, "invalid pix format\n");
				goto exit;
			}
			pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
		}
	} else {
		if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
			if (!update) {
				vpif_dbg(2, debug, "invalid pixel format\n");
				goto exit;
			}
			pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
		}
	}

	if (!(VPIF_VALID_FIELD(field))) {
		if (!update) {
			vpif_dbg(2, debug, "invalid field format\n");
			goto exit;
		}
		/**
		 * By default use FIELD_NONE for RAW Bayer capture
		 * and FIELD_INTERLACED for other interfaces
		 */
		field = vpif_get_default_field(&vpif_params->iface);
	} else if (field == V4L2_FIELD_ANY)
		/* unsupported field. Use default */
		field = vpif_get_default_field(&vpif_params->iface);

	/* validate the hpitch */
	hpitch = pixfmt->bytesperline;
	if (hpitch < vpif_params->std_info.width) {
		if (!update) {
			vpif_dbg(2, debug, "invalid hpitch\n");
			goto exit;
		}
		hpitch = vpif_params->std_info.width;
	}

	if (V4L2_MEMORY_USERPTR == common->memory)
		sizeimage = pixfmt->sizeimage;
	else
		sizeimage = config_params.channel_bufsize[ch->channel_id];

	vpitch = sizeimage / (hpitch * 2);

	/* validate the vpitch */
	if (vpitch < vpif_params->std_info.height) {
		if (!update) {
			vpif_dbg(2, debug, "Invalid vpitch\n");
			goto exit;
		}
		vpitch = vpif_params->std_info.height;
	}

	/* Check for 8 byte alignment */
	if (!ALIGN(hpitch, 8)) {
		if (!update) {
			vpif_dbg(2, debug, "invalid pitch alignment\n");
			goto exit;
		}
		/* adjust to next 8 byte boundary */
		hpitch = (((hpitch + 7) / 8) * 8);
	}
	/* if update is set, modify the bytesperline and sizeimage */
	if (update) {
		pixfmt->bytesperline = hpitch;
		pixfmt->sizeimage = hpitch * vpitch * 2;
	}
	/**
	 * Image width and height is always based on current standard width and
	 * height
	 */
	pixfmt->width = common->fmt.fmt.pix.width;
	pixfmt->height = common->fmt.fmt.pix.height;
	return 0;
exit:
	return ret;
}

Example #2

File: vpif_capture.c Project: DirtyDroidX/android_kernel_htc_m8ul

static int vpif_check_format(struct channel_obj *ch,
			     struct v4l2_pix_format *pixfmt,
			     int update)
{
	struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
	struct vpif_params *vpif_params = &ch->vpifparams;
	enum v4l2_field field = pixfmt->field;
	u32 sizeimage, hpitch, vpitch;
	int ret = -EINVAL;

	vpif_dbg(2, debug, "vpif_check_format\n");
	if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) {
		if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) {
			if (!update) {
				vpif_dbg(2, debug, "invalid pix format\n");
				goto exit;
			}
			pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8;
		}
	} else {
		if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) {
			if (!update) {
				vpif_dbg(2, debug, "invalid pixel format\n");
				goto exit;
			}
			pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P;
		}
	}

	if (!(VPIF_VALID_FIELD(field))) {
		if (!update) {
			vpif_dbg(2, debug, "invalid field format\n");
			goto exit;
		}
		field = vpif_get_default_field(&vpif_params->iface);
	} else if (field == V4L2_FIELD_ANY)
		
		field = vpif_get_default_field(&vpif_params->iface);

	
	hpitch = pixfmt->bytesperline;
	if (hpitch < vpif_params->std_info.width) {
		if (!update) {
			vpif_dbg(2, debug, "invalid hpitch\n");
			goto exit;
		}
		hpitch = vpif_params->std_info.width;
	}

	if (V4L2_MEMORY_USERPTR == common->memory)
		sizeimage = pixfmt->sizeimage;
	else
		sizeimage = config_params.channel_bufsize[ch->channel_id];

	vpitch = sizeimage / (hpitch * 2);

	
	if (vpitch < vpif_params->std_info.height) {
		if (!update) {
			vpif_dbg(2, debug, "Invalid vpitch\n");
			goto exit;
		}
		vpitch = vpif_params->std_info.height;
	}

	
	if (!ALIGN(hpitch, 8)) {
		if (!update) {
			vpif_dbg(2, debug, "invalid pitch alignment\n");
			goto exit;
		}
		
		hpitch = (((hpitch + 7) / 8) * 8);
	}
	
	if (update) {
		pixfmt->bytesperline = hpitch;
		pixfmt->sizeimage = hpitch * vpitch * 2;
	}
	pixfmt->width = common->fmt.fmt.pix.width;
	pixfmt->height = common->fmt.fmt.pix.height;
	return 0;
exit:
	return ret;
}