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android: capabilties: Fix ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES

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As reported by the CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES documentation
in the Android developer reference:

"For devices advertising any color filter arrangement other than NIR, or
devices not advertising color filter arrangement, this list will always
include (min, max) and (max, max) where min <= 15 and max = the maximum
output frame rate of the maximum YUV_420_888 output size."

Collect the higher FPS of the larger YUV stream and use it with the
minimum FPS rate the camera can produce to populate the
ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES static metadata.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Jacopo Mondi 2021-06-30 17:24:39 +02:00
parent c7bd730e1b
commit d810227c48
1 changed files with 28 additions and 47 deletions
Download patch file Download diff file Expand all files Collapse all files

75
src/android/camera_capabilities.cpp
View file

@ -886,53 +886,6 @@ int CameraCapabilities::initializeStaticMetadata()
staticMetadata_->addEntry(ANDROID_CONTROL_AE_AVAILABLE_MODES,
aeAvailableModes);
/* Initialize the AE frame duration limits. */
const auto frameDurationsInfo = controlsInfo.find(&controls::FrameDurationLimits);
int64_t minFrameDurationNsec = frameDurationsInfo->second.min().get<int64_t>() * 1000;
int64_t 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);
/*
* Force rounding errors so that we have the proper frame
* durations for when we reuse these variables later
*/
minFrameDurationNsec = 1e9 / maxFps;
maxFrameDurationNsec = 1e9 / 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);
std::vector<int32_t> aeCompensationRange = {
0, 0,
};
@ -1278,8 +1231,12 @@ int CameraCapabilities::initializeStaticMetadata()
std::vector<uint32_t> availableStreamConfigurations;
std::vector<int64_t> minFrameDurations;
int maxYUVFps = 0;
Size maxYUVSize;
availableStreamConfigurations.reserve(streamConfigurations_.size() * 4);
minFrameDurations.reserve(streamConfigurations_.size() * 4);
for (const auto &entry : streamConfigurations_) {
/*
* Filter out YUV streams not capable of running at 30 FPS.
@ -1298,6 +1255,16 @@ int CameraCapabilities::initializeStaticMetadata()
if (entry.androidFormat != HAL_PIXEL_FORMAT_BLOB && fps < 30)
continue;
/*
* Collect the FPS of the maximum YUV output size to populate
* AE_AVAILABLE_TARGET_FPS_RANGE
*/
if (entry.androidFormat == HAL_PIXEL_FORMAT_YCbCr_420_888 &&
entry.resolution > maxYUVSize) {
maxYUVSize = entry.resolution;
maxYUVFps = fps;
}
/* Stream configuration map. */
availableStreamConfigurations.push_back(entry.androidFormat);
availableStreamConfigurations.push_back(entry.resolution.width);
@ -1323,6 +1290,20 @@ int CameraCapabilities::initializeStaticMetadata()
staticMetadata_->addEntry(ANDROID_SCALER_AVAILABLE_MIN_FRAME_DURATIONS,
minFrameDurations);
/*
* Register to the camera service {min, max} and {max, max} with
* 'max' being the larger YUV stream maximum frame rate and 'min' being
* the globally minimum frame rate rounded to the next largest integer
* as the camera service expects the camera maximum frame duration to be
* smaller than 10^9 / minFps.
*/
int32_t minFps = std::ceil(1e9 / maxFrameDuration_);
int32_t availableAeFpsTarget[] = {
minFps, maxYUVFps, maxYUVFps, maxYUVFps,
};
staticMetadata_->addEntry(ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES,
availableAeFpsTarget);
std::vector<int64_t> availableStallDurations;
for (const auto &entry : streamConfigurations_) {
if (entry.androidFormat != HAL_PIXEL_FORMAT_BLOB)