From edd4b1dab26bfaa5560751d35fb10cc4dd0dfa58 Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Mon, 4 Jan 2021 16:18:29 +0100 Subject: android: camera_device: Compute frame durations Use the FrameDuration control reported by pipeline handlers to register the Auto-Exposure routine FPS range, the minimum stream frame durations and the sensor maximum frame duration. Reviewed-by: Laurent Pinchart Signed-off-by: Jacopo Mondi --- src/android/camera_device.cpp | 84 ++++++++++++++++++++++++++++++++----------- 1 file changed, 64 insertions(+), 20 deletions(-) (limited to 'src') diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp index 3ee68370..dd011bde 100644 --- a/src/android/camera_device.cpp +++ b/src/android/camera_device.cpp @@ -9,6 +9,7 @@ #include "camera_ops.h" #include "post_processor.h" +#include #include #include #include @@ -682,10 +683,10 @@ std::tuple CameraDevice::calculateStaticMetadataSize() { /* * \todo Keep this in sync with the actual number of entries. - * Currently: 53 entries, 854 bytes of static metadata + * Currently: 54 entries, 874 bytes of static metadata */ - uint32_t numEntries = 53; - uint32_t byteSize = 854; + uint32_t numEntries = 54; + uint32_t byteSize = 874; /* * Calculate space occupation in bytes for dynamically built metadata @@ -775,12 +776,48 @@ const camera_metadata_t *CameraDevice::getStaticMetadata() aeAvailableModes.data(), aeAvailableModes.size()); - std::vector availableAeFpsTarget = { - 15, 30, - }; - staticMetadata_->addEntry(ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES, - availableAeFpsTarget.data(), - availableAeFpsTarget.size()); + int64_t minFrameDurationNsec = -1; + int64_t maxFrameDurationNsec = -1; + const auto frameDurationsInfo = controlsInfo.find(&controls::FrameDurations); + if (frameDurationsInfo != controlsInfo.end()) { + minFrameDurationNsec = frameDurationsInfo->second.min().get() * 1000; + maxFrameDurationNsec = frameDurationsInfo->second.max().get() * 1000; + + /* + * Adjust the minimum frame duration to comply with Android + * requirements. The camera service mandates all preview/record + * streams to have a minimum frame duration < 33,366 milliseconds + * (see MAX_PREVIEW_RECORD_DURATION_NS in the camera service + * implementation). + * + * If we're close enough (+ 500 useconds) to that value, round + * the minimum frame duration of the camera to an accepted + * value. + */ + static constexpr int64_t MAX_PREVIEW_RECORD_DURATION_NS = 1e9 / 29.97; + if (minFrameDurationNsec > MAX_PREVIEW_RECORD_DURATION_NS && + minFrameDurationNsec < MAX_PREVIEW_RECORD_DURATION_NS + 500000) + minFrameDurationNsec = MAX_PREVIEW_RECORD_DURATION_NS - 1000; + + /* + * The AE routine frame rate limits are computed using the frame + * duration limits, as libcamera clips the AE routine to the + * frame durations. + */ + int32_t maxFps = std::round(1e9 / minFrameDurationNsec); + int32_t minFps = std::round(1e9 / maxFrameDurationNsec); + minFps = std::max(1, minFps); + + /* + * Register to the camera service {min, max} and {max, max} + * intervals as requested by the metadata documentation. + */ + int32_t availableAeFpsTarget[] = { + minFps, maxFps, maxFps, maxFps + }; + staticMetadata_->addEntry(ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES, + availableAeFpsTarget, 4); + } std::vector aeCompensationRange = { 0, 0, @@ -970,6 +1007,10 @@ const camera_metadata_t *CameraDevice::getStaticMetadata() staticMetadata_->addEntry(ANDROID_SENSOR_INFO_TIMESTAMP_SOURCE, ×tampSource, 1); + if (maxFrameDurationNsec > 0) + staticMetadata_->addEntry(ANDROID_SENSOR_INFO_MAX_FRAME_DURATION, + &maxFrameDurationNsec, 1); + /* Statistics static metadata. */ uint8_t faceDetectMode = ANDROID_STATISTICS_FACE_DETECT_MODE_OFF; staticMetadata_->addEntry(ANDROID_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES, @@ -1104,18 +1145,20 @@ const camera_metadata_t *CameraDevice::getStaticMetadata() availableStallDurations.data(), availableStallDurations.size()); - /* \todo Collect the minimum frame duration from the camera. */ - std::vector minFrameDurations; - minFrameDurations.reserve(streamConfigurations_.size() * 4); - for (const auto &entry : streamConfigurations_) { - minFrameDurations.push_back(entry.androidFormat); - minFrameDurations.push_back(entry.resolution.width); - minFrameDurations.push_back(entry.resolution.height); - minFrameDurations.push_back(33333333); + /* Use the minimum frame duration for all the YUV/RGB formats. */ + if (minFrameDurationNsec > 0) { + std::vector minFrameDurations; + minFrameDurations.reserve(streamConfigurations_.size() * 4); + for (const auto &entry : streamConfigurations_) { + minFrameDurations.push_back(entry.androidFormat); + minFrameDurations.push_back(entry.resolution.width); + minFrameDurations.push_back(entry.resolution.height); + minFrameDurations.push_back(minFrameDurationNsec); + } + staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, + minFrameDurations.data(), + minFrameDurations.size()); } - staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS, - minFrameDurations.data(), - minFrameDurations.size()); uint8_t croppingType = ANDROID_SCALER_CROPPING_TYPE_CENTER_ONLY; staticMetadata_->addEntry(ANDROID_SCALER_CROPPING_TYPE, &croppingType, 1); @@ -1215,6 +1258,7 @@ const camera_metadata_t *CameraDevice::getStaticMetadata() ANDROID_SENSOR_INFO_ACTIVE_ARRAY_SIZE, ANDROID_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT, ANDROID_SENSOR_INFO_EXPOSURE_TIME_RANGE, + ANDROID_SENSOR_INFO_MAX_FRAME_DURATION, ANDROID_SENSOR_INFO_PHYSICAL_SIZE, ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE, ANDROID_SENSOR_INFO_SENSITIVITY_RANGE, -- cgit v1.2.1