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From: Archit Taneja <archit@ti.com>
To: Kamil Debski <k.debski@samsung.com>
Cc: <linux-media@vger.kernel.org>, <linux-omap@vger.kernel.org>,
	<hverkuil@xs4all.nl>, <laurent.pinchart@ideasonboard.com>
Subject: Re: [PATCH 5/7] v4l: ti-vpe: Allow usage of smaller images
Date: Mon, 3 Mar 2014 18:11:43 +0530	[thread overview]
Message-ID: <53147887.8020302@ti.com> (raw)
In-Reply-To: <16d701cf36da$17704d80$4650e880$%debski@samsung.com>

Hi,

On Monday 03 March 2014 05:44 PM, Kamil Debski wrote:
> Hi Archit,
>
>> From: Archit Taneja [mailto:archit@ti.com]
>> Sent: Monday, March 03, 2014 8:33 AM
>>
>> The minimum width and height for VPE input/output was kept as 128
>> pixels. VPE doesn't have a constraint on the image height, it requires
>> the image width to be atleast 16 bytes.
>
> "16 bytes" - shouldn't it be pixels? (also "at least" :) )
> I can correct it when applying the patch if the above is the case.

VPDMA IP requires the line stride of the input/output images to be at 
least 16 bytes in total.

This can safely result in a minimum width of 16 pixels(NV12 has the 
least bpp with 1 byte per pixel). But we don't really have any need to 
support such small image resolutions. So I picked up 32x32 as the 
minimum size, and tested VPE with that.

Thanks,
Archit


  reply	other threads:[~2014-03-03 12:42 UTC|newest]

Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-03  7:33 [PATCH 0/7] v4l: ti-vpe: Some VPE fixes and enhancements Archit Taneja
2014-03-03  7:33 ` [PATCH 1/7] v4l: ti-vpe: Make sure in job_ready that we have the needed number of dst_bufs Archit Taneja
2014-03-03  7:33 ` [PATCH 2/7] v4l: ti-vpe: register video device only when firmware is loaded Archit Taneja
2014-03-03  7:33 ` [PATCH 3/7] v4l: ti-vpe: Use video_device_release_empty Archit Taneja
2014-03-03  7:33 ` [PATCH 4/7] v4l: ti-vpe: Allow DMABUF buffer type support Archit Taneja
2014-03-03  7:33 ` [PATCH 5/7] v4l: ti-vpe: Allow usage of smaller images Archit Taneja
2014-03-03 12:14   ` Kamil Debski
2014-03-03 12:41     ` Archit Taneja [this message]
2014-03-03  7:33 ` [PATCH 6/7] v4l: ti-vpe: Fix some params in VPE data descriptors Archit Taneja
2014-03-03  7:33 ` [PATCH 7/7] v4l: ti-vpe: Add crop support in VPE driver Archit Taneja
2014-03-03  7:50   ` Hans Verkuil
2014-03-03  8:26     ` Archit Taneja
2014-03-03 12:21       ` Kamil Debski
2014-03-03 12:36         ` Archit Taneja
2014-03-04  7:38     ` Archit Taneja
2014-03-04  7:43       ` Hans Verkuil
2014-03-04  8:26         ` Archit Taneja
2014-03-04  8:49 ` [PATCH v2 0/7] v4l: ti-vpe: Some VPE fixes and enhancements Archit Taneja
2014-03-04  8:49   ` [PATCH v2 1/7] v4l: ti-vpe: Make sure in job_ready that we have the needed number of dst_bufs Archit Taneja
2014-03-04  8:49   ` [PATCH v2 2/7] v4l: ti-vpe: register video device only when firmware is loaded Archit Taneja
2014-03-04  8:49   ` [PATCH v2 3/7] v4l: ti-vpe: Use video_device_release_empty Archit Taneja
2014-03-04  8:49   ` [PATCH v2 4/7] v4l: ti-vpe: Allow DMABUF buffer type support Archit Taneja
2014-03-04  8:49   ` [PATCH v2 5/7] v4l: ti-vpe: Allow usage of smaller images Archit Taneja
2014-03-04  8:49   ` [PATCH v2 6/7] v4l: ti-vpe: Fix some params in VPE data descriptors Archit Taneja
2014-03-04  8:49   ` [PATCH v2 7/7] v4l: ti-vpe: Add selection API in VPE driver Archit Taneja
2014-03-04  9:40     ` Hans Verkuil
2014-03-04 11:25       ` Archit Taneja
2014-03-04 11:35         ` Hans Verkuil
2014-03-07 11:50           ` Archit Taneja
2014-03-07 12:59             ` Hans Verkuil
2014-03-07 13:22               ` Archit Taneja
2014-03-07 13:32                 ` Hans Verkuil
2014-03-07 13:47                   ` Archit Taneja
2014-03-10 12:12                     ` Archit Taneja
2014-03-10 12:33                       ` Hans Verkuil
2014-03-04 13:28         ` Kamil Debski
2014-03-11  8:33   ` [PATCH v3 00/14] v4l: ti-vpe: Some VPE fixes and enhancements Archit Taneja
2014-03-11  8:33     ` [PATCH v3 01/14] v4l: ti-vpe: Make sure in job_ready that we have the needed number of dst_bufs Archit Taneja
2014-03-13 14:36       ` Kamil Debski
2014-03-11  8:33     ` [PATCH v3 02/14] v4l: ti-vpe: register video device only when firmware is loaded Archit Taneja
2014-03-13 11:48       ` Kamil Debski
2014-03-13 12:09         ` Archit Taneja
2014-03-13 14:29           ` Kamil Debski
2014-03-14  9:51             ` Archit Taneja
2014-03-11  8:33     ` [PATCH v3 03/14] v4l: ti-vpe: Use video_device_release_empty Archit Taneja
2014-03-11 12:02       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 04/14] v4l: ti-vpe: Allow DMABUF buffer type support Archit Taneja
2014-03-11 12:03       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 05/14] v4l: ti-vpe: Allow usage of smaller images Archit Taneja
2014-03-11 12:03       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 06/14] v4l: ti-vpe: Fix some params in VPE data descriptors Archit Taneja
2014-03-11  8:33     ` [PATCH v3 07/14] v4l: ti-vpe: Add selection API in VPE driver Archit Taneja
2014-03-11 12:21       ` Hans Verkuil
2014-03-11 12:46         ` Archit Taneja
2014-03-11 12:49           ` Hans Verkuil
2014-03-11 13:10             ` Archit Taneja
2014-03-11  8:33     ` [PATCH v3 08/14] v4l: ti-vpe: Rename csc memory resource name Archit Taneja
2014-03-11  8:33     ` [PATCH v3 09/14] v4l: ti-vpe: report correct capabilities in querycap Archit Taneja
2014-03-11 12:23       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 10/14] v4l: ti-vpe: Use correct bus_info name for the device " Archit Taneja
2014-03-11 12:23       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 11/14] v4l: ti-vpe: Fix initial configuration queue data Archit Taneja
2014-03-11 12:24       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 12/14] v4l: ti-vpe: zero out reserved fields in try_fmt Archit Taneja
2014-03-11 12:25       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 13/14] v4l: ti-vpe: Set correct field parameter for output and capture buffers Archit Taneja
2014-03-11 12:29       ` Hans Verkuil
2014-03-11  8:33     ` [PATCH v3 14/14] v4l: ti-vpe: retain v4l2_buffer flags for captured buffers Archit Taneja
2014-03-11 12:31       ` Hans Verkuil
2014-03-13 11:44     ` [PATCH v4 00/14] v4l: ti-vpe: Some VPE fixes and enhancements Archit Taneja
2014-03-13 11:44       ` [PATCH v4 01/14] v4l: ti-vpe: Make sure in job_ready that we have the needed number of dst_bufs Archit Taneja
2014-03-13 14:38         ` Kamil Debski
2014-03-13 11:44       ` [PATCH v4 02/14] v4l: ti-vpe: register video device only when firmware is loaded Archit Taneja
2014-03-13 11:44       ` [PATCH v4 03/14] v4l: ti-vpe: Use video_device_release_empty Archit Taneja
2014-03-13 11:44       ` [PATCH v4 04/14] v4l: ti-vpe: Allow DMABUF buffer type support Archit Taneja
2014-03-13 11:44       ` [PATCH v4 05/14] v4l: ti-vpe: Allow usage of smaller images Archit Taneja
2014-03-13 11:44       ` [PATCH v4 06/14] v4l: ti-vpe: Fix some params in VPE data descriptors Archit Taneja
2014-03-13 15:01         ` Kamil Debski
2014-03-13 11:44       ` [PATCH v4 07/14] v4l: ti-vpe: Add selection API in VPE driver Archit Taneja
2014-03-13 11:44       ` [PATCH v4 08/14] v4l: ti-vpe: Rename csc memory resource name Archit Taneja
2014-03-13 14:44         ` Kamil Debski
2014-03-14  6:18           ` Archit Taneja
2014-03-13 11:44       ` [PATCH v4 09/14] v4l: ti-vpe: report correct capabilities in querycap Archit Taneja
2014-03-13 11:44       ` [PATCH v4 10/14] v4l: ti-vpe: Use correct bus_info name for the device " Archit Taneja
2014-03-13 11:44       ` [PATCH v4 11/14] v4l: ti-vpe: Fix initial configuration queue data Archit Taneja
2014-03-13 11:44       ` [PATCH v4 12/14] v4l: ti-vpe: zero out reserved fields in try_fmt Archit Taneja
2014-03-13 11:44       ` [PATCH v4 13/14] v4l: ti-vpe: Set correct field parameter for output and capture buffers Archit Taneja
2014-03-13 11:44       ` [PATCH v4 14/14] v4l: ti-vpe: retain v4l2_buffer flags for captured buffers Archit Taneja

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