From 1264628d3c92dedfcee32caed776e2beaad74a2a Mon Sep 17 00:00:00 2001 From: Paul Elder Date: Sat, 23 Jan 2021 13:56:01 +0900 Subject: android: jpeg: Configure thumbnailer based on request metadata Configure the thumbnailer based on the thumbnail parameters given by the android request metadata. Only the thumbnail encoder needs to be configured, and since it is only used at post-processing time, move the configuration out of the post-processor constructor and into the processing step. Also set the following android result metadata tags: - ANDROID_JPEG_THUMBNAIL_SIZE - ANDROID_JPEG_THUMBNAIL_QUALITY Signed-off-by: Paul Elder Reviewed-by: Laurent Pinchart --- src/android/jpeg/post_processor_jpeg.cpp | 43 ++++++++++++++++++++++---------- src/android/jpeg/post_processor_jpeg.h | 1 + src/android/jpeg/thumbnailer.cpp | 25 +++---------------- src/android/jpeg/thumbnailer.h | 6 ++--- 4 files changed, 36 insertions(+), 39 deletions(-) (limited to 'src/android/jpeg') diff --git a/src/android/jpeg/post_processor_jpeg.cpp b/src/android/jpeg/post_processor_jpeg.cpp index 7e49e9d9..e990ba04 100644 --- a/src/android/jpeg/post_processor_jpeg.cpp +++ b/src/android/jpeg/post_processor_jpeg.cpp @@ -44,12 +44,6 @@ int PostProcessorJpeg::configure(const StreamConfiguration &inCfg, streamSize_ = outCfg.size; thumbnailer_.configure(inCfg.size, inCfg.pixelFormat); - StreamConfiguration thCfg = inCfg; - thCfg.size = thumbnailer_.size(); - if (thumbnailEncoder_.configure(thCfg) != 0) { - LOG(JPEG, Error) << "Failed to configure thumbnail encoder"; - return -EINVAL; - } encoder_ = std::make_unique(); @@ -57,14 +51,20 @@ int PostProcessorJpeg::configure(const StreamConfiguration &inCfg, } void PostProcessorJpeg::generateThumbnail(const FrameBuffer &source, + const Size &targetSize, std::vector *thumbnail) { /* Stores the raw scaled-down thumbnail bytes. */ std::vector rawThumbnail; - thumbnailer_.createThumbnail(source, &rawThumbnail); + thumbnailer_.createThumbnail(source, targetSize, &rawThumbnail); - if (!rawThumbnail.empty()) { + StreamConfiguration thCfg; + thCfg.size = targetSize; + thCfg.pixelFormat = thumbnailer_.pixelFormat(); + int ret = thumbnailEncoder_.configure(thCfg); + + if (!rawThumbnail.empty() && !ret) { /* * \todo Avoid value-initialization of all elements of the * vector. @@ -129,6 +129,28 @@ int PostProcessorJpeg::process(const FrameBuffer &source, entry.data.i64, 1); } + ret = requestMetadata.getEntry(ANDROID_JPEG_THUMBNAIL_SIZE, &entry); + if (ret) { + const int32_t *data = entry.data.i32; + Size thumbnailSize = { static_cast(data[0]), + static_cast(data[1]) }; + + if (thumbnailSize != Size(0, 0)) { + std::vector thumbnail; + generateThumbnail(source, thumbnailSize, &thumbnail); + if (!thumbnail.empty()) + exif.setThumbnail(thumbnail, Exif::Compression::JPEG); + } + + resultMetadata->addEntry(ANDROID_JPEG_THUMBNAIL_SIZE, data, 2); + + /* \todo Use this quality as a parameter to the encoder */ + ret = requestMetadata.getEntry(ANDROID_JPEG_THUMBNAIL_QUALITY, &entry); + if (ret) + resultMetadata->addEntry(ANDROID_JPEG_THUMBNAIL_QUALITY, + entry.data.u8, 1); + } + ret = requestMetadata.getEntry(ANDROID_JPEG_GPS_COORDINATES, &entry); if (ret) { exif.setGPSLocation(entry.data.d); @@ -144,11 +166,6 @@ int PostProcessorJpeg::process(const FrameBuffer &source, entry.data.u8, entry.count); } - std::vector thumbnail; - generateThumbnail(source, &thumbnail); - if (!thumbnail.empty()) - exif.setThumbnail(thumbnail, Exif::Compression::JPEG); - if (exif.generate() != 0) LOG(JPEG, Error) << "Failed to generate valid EXIF data"; diff --git a/src/android/jpeg/post_processor_jpeg.h b/src/android/jpeg/post_processor_jpeg.h index d721d1b9..660b79b4 100644 --- a/src/android/jpeg/post_processor_jpeg.h +++ b/src/android/jpeg/post_processor_jpeg.h @@ -31,6 +31,7 @@ public: private: void generateThumbnail(const libcamera::FrameBuffer &source, + const libcamera::Size &targetSize, std::vector *thumbnail); CameraDevice *const cameraDevice_; diff --git a/src/android/jpeg/thumbnailer.cpp b/src/android/jpeg/thumbnailer.cpp index 5374538a..f709d343 100644 --- a/src/android/jpeg/thumbnailer.cpp +++ b/src/android/jpeg/thumbnailer.cpp @@ -32,30 +32,11 @@ void Thumbnailer::configure(const Size &sourceSize, PixelFormat pixelFormat) return; } - targetSize_ = computeThumbnailSize(); - valid_ = true; } -/* - * The Exif specification recommends the width of the thumbnail to be a - * multiple of 16 (section 4.8.1). Hence, compute the corresponding height - * keeping the aspect ratio same as of the source. - */ -Size Thumbnailer::computeThumbnailSize() const -{ - unsigned int targetHeight; - constexpr unsigned int kTargetWidth = 160; - - targetHeight = kTargetWidth * sourceSize_.height / sourceSize_.width; - - if (targetHeight & 1) - targetHeight++; - - return Size(kTargetWidth, targetHeight); -} - void Thumbnailer::createThumbnail(const FrameBuffer &source, + const Size &targetSize, std::vector *destination) { MappedFrameBuffer frame(&source, PROT_READ); @@ -73,8 +54,8 @@ void Thumbnailer::createThumbnail(const FrameBuffer &source, const unsigned int sw = sourceSize_.width; const unsigned int sh = sourceSize_.height; - const unsigned int tw = targetSize_.width; - const unsigned int th = targetSize_.height; + const unsigned int tw = targetSize.width; + const unsigned int th = targetSize.height; ASSERT(tw % 2 == 0 && th % 2 == 0); diff --git a/src/android/jpeg/thumbnailer.h b/src/android/jpeg/thumbnailer.h index 98f11833..4e9226c3 100644 --- a/src/android/jpeg/thumbnailer.h +++ b/src/android/jpeg/thumbnailer.h @@ -20,15 +20,13 @@ public: void configure(const libcamera::Size &sourceSize, libcamera::PixelFormat pixelFormat); void createThumbnail(const libcamera::FrameBuffer &source, + const libcamera::Size &targetSize, std::vector *dest); - const libcamera::Size &size() const { return targetSize_; } + const libcamera::PixelFormat &pixelFormat() const { return pixelFormat_; } private: - libcamera::Size computeThumbnailSize() const; - libcamera::PixelFormat pixelFormat_; libcamera::Size sourceSize_; - libcamera::Size targetSize_; bool valid_; }; -- cgit v1.2.1