[libcamera-devel] [PATCH v3 08/13] android: camera_device: Only construct required planes

[Kieran Bingham]

On 05/08/2020 00:49, Laurent Pinchart wrote:
> Hi Kieran,
> 
> Thank you for the patch.
> 
> On Tue, Aug 04, 2020 at 10:47:06PM +0100, Kieran Bingham wrote:
>> The camera3buffer describes the number of filedescriptors given.
>> Don't try to construct more planes than that.
>>
>> Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>> Signed-off-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
>> ---
>>  src/android/camera_device.cpp | 13 ++++++++++++-
>>  1 file changed, 12 insertions(+), 1 deletion(-)
>>
>> diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
>> index e4dce680d46f..087e226f5a82 100644
>> --- a/src/android/camera_device.cpp
>> +++ b/src/android/camera_device.cpp
>> @@ -1082,9 +1082,20 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>>  FrameBuffer *CameraDevice::createFrameBuffer(const buffer_handle_t camera3buffer)
>>  {
>>  	std::vector<FrameBuffer::Plane> planes;
>> -	for (unsigned int i = 0; i < 3; i++) {
>> +	for (int i = 0; i < camera3buffer->numFds; i++) {
>> +		/* Skip unused planes. */
>> +		if (camera3buffer->data[i] == -1)
>> +			break;
>> +
>>  		FrameBuffer::Plane plane;
>>  		plane.fd = FileDescriptor(camera3buffer->data[i]);
>> +		if (!plane.fd.isValid()) {
>> +			LOG(HAL, Error) << "Failed to obtain FileDescriptor ("
>> +					<< camera3buffer->data[i] << ") "
>> +					<< " on plane " << i;
>> +			break;
> 
> Shouldn't you return nullptr here ?

Ugh, I'm sure I'd fixed that already... Sorry not sure where that hunk
went. Must have got squashed to the wrong patch perhaps.


Now corrected on this patch.

Ah I must have done this for the SEEK_END implementation, but yes I
think it should return nullptr here too.

> 
>> +		}
>> +
>>  		/*
>>  		 * Setting length to zero here is OK as the length is only used
>>  		 * to map the memory of the plane. Libcamera do not need to poke
> 

-- 
Regards
--
Kieran