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android: camera_device: Compute frame durations

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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 <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
This commit is contained in:
Jacopo Mondi 2021-01-04 16:18:29 +01:00
parent 02a1186536
commit edd4b1dab2
1 changed files with 64 additions and 20 deletions
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62
src/android/camera_device.cpp
View file

@ -9,6 +9,7 @@
#include "camera_ops.h"
#include "post_processor.h"
#include <cmath>
#include <fstream>
#include <sys/mman.h>
#include <tuple>
@ -682,10 +683,10 @@ std::tuple<uint32_t, uint32_t> 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<int32_t> availableAeFpsTarget = {
15, 30,
int64_t minFrameDurationNsec = -1;
int64_t maxFrameDurationNsec = -1;
const auto frameDurationsInfo = controlsInfo.find(&controls::FrameDurations);
if (frameDurationsInfo != controlsInfo.end()) {
minFrameDurationNsec = frameDurationsInfo->second.min().get<int64_t>() * 1000;
maxFrameDurationNsec = frameDurationsInfo->second.max().get<int64_t>() * 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.data(),
availableAeFpsTarget.size());
availableAeFpsTarget, 4);
}
std::vector<int32_t> aeCompensationRange = {
0, 0,
@ -970,6 +1007,10 @@ const camera_metadata_t *CameraDevice::getStaticMetadata()
staticMetadata_->addEntry(ANDROID_SENSOR_INFO_TIMESTAMP_SOURCE,
&timestampSource, 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. */
/* Use the minimum frame duration for all the YUV/RGB formats. */
if (minFrameDurationNsec > 0) {
std::vector<int64_t> 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);
minFrameDurations.push_back(minFrameDurationNsec);
}
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,