[libcamera-devel] [PATCH v5 2/3] android: camera_device: Use Camera3StreamConfig in configureStreams()

Umang Jain email at uajain.com
Wed Dec 9 13:45:10 CET 2020


Hi Hiro

On 12/9/20 4:21 PM, Kieran Bingham wrote:
> Hi Hiro,
>
> On 09/12/2020 05:54, Hirokazu Honda wrote:
>> Use the newly introduced Camera3StreamConfig to associate the
>> Android requested streams with the associated StreamConfiguration
>> in a vector of configurations.
>>
>> This change prepares to sort the vector of configuration before using
>> it to configure the Camera and populate the streams_ vector.
>>
>> No functional changes intended.
>>
>> Signed-off-by: Hirokazu Honda <hiroh at chromium.org>
>> Reviewed-by: Jacopo Mondi <jacopo at jmondi.org>
> Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>

Reviewed-by: Umang Jain <email at uajain.com>
>
>> ---
>>   src/android/camera_device.cpp | 52 +++++++++++++++++++++--------------
>>   1 file changed, 31 insertions(+), 21 deletions(-)
>>
>> diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
>> index 09269d95..b7bf3d88 100644
>> --- a/src/android/camera_device.cpp
>> +++ b/src/android/camera_device.cpp
>> @@ -1240,6 +1240,9 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>>   	streams_.clear();
>>   	streams_.reserve(stream_list->num_streams);
>>
>> +	std::vector<Camera3StreamConfig> streamConfigs;
>> +	streamConfigs.reserve(stream_list->num_streams);
>> +
>>   	/* First handle all non-MJPEG streams. */
>>   	camera3_stream_t *jpegStream = nullptr;
>>   	for (unsigned int i = 0; i < stream_list->num_streams; ++i) {
>> @@ -1270,14 +1273,12 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>>   			continue;
>>   		}
>>
>> -		StreamConfiguration streamConfiguration;
>> -		streamConfiguration.size = size;
>> -		streamConfiguration.pixelFormat = format;
>> -
>> -		config_->addConfiguration(streamConfiguration);
>> -		streams_.emplace_back(this, CameraStream::Type::Direct,
>> -				      stream, config_->size() - 1);
>> -		stream->priv = static_cast<void *>(&streams_.back());
>> +		Camera3StreamConfig streamConfig;
>> +		streamConfig.streams = { stream };
>> +		streamConfig.types = { CameraStream::Type::Direct };
>> +		streamConfig.config.size = size;
>> +		streamConfig.config.pixelFormat = format;
>> +		streamConfigs.push_back(std::move(streamConfig));
>>   	}
>>
>>   	/* Now handle the MJPEG streams, adding a new stream if required. */
>> @@ -1286,9 +1287,8 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>>   		int index = -1;
>>
>>   		/* Search for a compatible stream in the non-JPEG ones. */
>> -		for (unsigned int i = 0; i < config_->size(); i++) {
>> -			StreamConfiguration &cfg = config_->at(i);
>> -
>> +		for (size_t i = 0; i < streamConfigs.size(); ++i) {
>> +			const auto &cfg = streamConfigs[i].config;
>>   			/*
>>   			 * \todo The PixelFormat must also be compatible with
>>   			 * the encoder.
>> @@ -1310,28 +1310,38 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>>   		 * introduce a new stream to satisfy the request requirements.
>>   		 */
>>   		if (index < 0) {
>> -			StreamConfiguration streamConfiguration;
>> -
>>   			/*
>>   			 * \todo The pixelFormat should be a 'best-fit' choice
>>   			 * and may require a validation cycle. This is not yet
>>   			 * handled, and should be considered as part of any
>>   			 * stream configuration reworks.
>>   			 */
>> -			streamConfiguration.size.width = jpegStream->width;
>> -			streamConfiguration.size.height = jpegStream->height;
>> -			streamConfiguration.pixelFormat = formats::NV12;
>> +			Camera3StreamConfig streamConfig;
>> +			streamConfig.config.size.width = jpegStream->width;
>> +			streamConfig.config.size.height = jpegStream->height;
>> +			streamConfig.config.pixelFormat = formats::NV12;
>> +			streamConfigs.push_back(std::move(streamConfig));
>>
>> -			LOG(HAL, Info) << "Adding " << streamConfiguration.toString()
>> +			LOG(HAL, Info) << "Adding " << streamConfig.config.toString()
>>   				       << " for MJPEG support";
>>
>>   			type = CameraStream::Type::Internal;
>> -			config_->addConfiguration(streamConfiguration);
>> -			index = config_->size() - 1;
>> +			index = streamConfigs.size() - 1;
>>   		}
>>
>> -		streams_.emplace_back(this, type, jpegStream, index);
>> -		jpegStream->priv = static_cast<void *>(&streams_.back());
>> +		streamConfigs[index].streams.push_back(jpegStream);
>> +		streamConfigs[index].types.push_back(type);
>> +	}
>> +
>> +	for (const auto &streamConfig : streamConfigs) {
>> +		config_->addConfiguration(streamConfig.config);
>> +		for (size_t i = 0; i < streamConfig.streams.size(); ++i) {
>> +			camera3_stream_t *stream = streamConfig.streams[i];
>> +			const CameraStream::Type type = streamConfig.types[i];
>> +			streams_.emplace_back(this, type,
>> +					      stream, config_->size() - 1);
>> +			stream->priv = static_cast<void*>(&streams_.back());
>> +		}
>>   	}
>>
>>   	switch (config_->validate()) {
>> --
>> 2.29.2.576.ga3fc446d84-goog
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>> libcamera-devel at lists.libcamera.org
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>>



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