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2022-09-01qcam: viewfinder_gl: Take color space into account for YUV renderingLaurent Pinchart
Update the YUV shaders and the viewfinder_gl to correctly take the Y'CbCr encoding and the quantization range into account when rendering YUV formats to RGB. Support for the primaries and transfer function will be added in a subsequent step. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Kunal Agarwal <kunalagarwal1072002@gmail.com>
2022-09-01qcam: Pass color space to ViewFinder::setFormat()Laurent Pinchart
To prepare for color space support in the viewfinder, pass the color space to the setFormat() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-08-09libcamera: controls: Generate and use fixed-sized Span typesChristian Rauch
Define Span types explicitly as either variable- or fixed-sized. This introduces a new convention for defining Span dimensions in the property and control value definitions and generates Span types as variable-sized Span<T> or as fixed-sized Span<T,N>. Signed-off-by: Christian Rauch <Rauch.Christian@gmx.de> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-07-27raspberrypi: Update Copyright statement in all Raspberry Pi source filesNaushir Patuck
s/Raspberry Pi (Trading) Limited/Raspberry Pi Ltd/ to reflect the new Raspberry Pi entity name. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-07-22qcam: assets: shader: bayer_8.frag: Add precisionKunal Agarwal
The OpenGL ES shading language has no default precision declared implicitly for floats in fragment shaders. The lack of an explicit default precision results in shader compilation errors. Specify a default precision of mediump for floats. This matches the other fragment shaders, and is guaranteed by the OpenGL ES shader language specification to be supported by all devices, while the higher precision highp is optional. Signed-off-by: Kunal Agarwal <kunalagarwal1072002@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-07-19libcamera: controls: Avoid double lookupsLaurent Pinchart
Now that the ControlList::get() function returns an instance of std::optional<>, we can replace the ControlList::contains() calls with a nullopt check on the return value of get(). This avoids double lookups of controls through the code base. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-07-19libcamera: controls: Use std::optional to handle invalid control valuesChristian Rauch
Previously, ControlList::get<T>() would use default constructed objects to indicate that a ControlList does not have the requested Control. This has several disadvantages: 1) It requires types to be default constructible, 2) it does not differentiate between a default constructed object and an object that happens to have the same state as a default constructed object. std::optional<T> additionally stores the information if the object is valid or not, and therefore is more expressive than a default constructed object. Signed-off-by: Christian Rauch <Rauch.Christian@gmx.de> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-07-18qcam: viewfinder_qt: Support X RGB variantsKieran Bingham
Support the X variants of the RGB pixel formats alongside the equivalent Alpha component based versions. The QImage::Format_RGB32 and QImage::Format_RGBX8888 formats only specify that the alpha component must be 0xff. While the Qt documentation doesn't guarantee that the alpha value will be ignored by consumers, this seems to be the implemented behaviour, at least when rendering with QPainter::drawImage(). The existing use of QImage::Format_RGBA8888 is updated to use the QImage::Format_RGBX8888 variant to ensure that the image data is visible. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-07-18qcam: format_converter: Support X RGB variantsKieran Bingham
Support the X variants of the RGB pixel formats along side the equivalent Alpha component based versions. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-07-18qcam: viewfinder_qt: Fix include ordersKieran Bingham
Update the header orders to match the code style as decreed by clang-format. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-07-18qcam: main_window: Fix include orderingKieran Bingham
Fix the sort order of the Qt headers to match the expected sort order from clang-format. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-05-04libcamera: Replace toString with operator<<() for format classesLaurent Pinchart
Now that format classes implement the stream formatting operator<<(), use it instead of the toString() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2022-01-19qcam: main_window: Fix include orderingKieran Bingham
The libcamera coding style has libcamera headers after system headers, and before any other library headers. Move the libcamera headers above the QT headers accordingly. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-11-24qcam: Convert to pragma onceKieran Bingham
Remove the verbose #ifndef/#define/#endif pattern for maintaining header idempotency, and replace it with a simple #pragma once. This simplifies the headers, and prevents redundant changes when header files get moved. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
2021-10-15qcam: Remove using namespace in header filesHirokazu Honda
"using namespace" in a header file propagates the namespace to the files including the header file. So it should be avoided. This removes "using namespace" in header files in qcam. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-09-22qcam: viewfinder_gl: Support configurable stride in shadersLaurent Pinchart
The RGB and YUV conversion doesn't take the stride into account, neither when creating the textures, nor when sampling them. Fix it by using the stride as the texture width, and multiplying the x coordinate in the vertex shaders by a factor to only sample the active portion of the image. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-09-22qcam: format_converter: Add fully-planar YUV formats supportLaurent Pinchart
Add support for the YUV420, YVU420 and YUV422 formats supported by libcamera. YUV420 can be produced by the Raspberry Pi pipeline handler, being able to display it is useful for testing. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-09-22qcam: format_converter: Rename YUV and NV to YUVPacked and YUVSemiPlanarLaurent Pinchart
To prepare for fully-planar YUV support, rename the existing format families YUV and NV to YUVPacked and YUVSemiPlanar respectively. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-09-22qcam: format_converter: Add configurable stride supportLaurent Pinchart
Make the stride configurable to support conversion of images with padding at the end of lines. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-09-22qcam: viewfinder: Pass stride value to viewfinderLaurent Pinchart
qcam currently assumes that no padding is used at end of lines, and uses the image width as the stride. This leads to rendering failures with some formats on some platforms. To prepare for stride support, add a stride parameter to the ViewFinder::setFormat() function to pass the stride from the stream configuration to the viewfinder. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
2021-09-07qcam: viewfinder_qt: Support multi-planar buffersLaurent Pinchart
Now that the ViewFinderQt receives an Image, move the Converter API to take an Image as well, and enable multi-planar buffer support. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-09-07qcam: viewfinder_gl: Support multi-planar buffersLaurent Pinchart
Now that the ViewFinderGL receives an Image, it can trivially support multi-planar buffers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-09-07qcam: Use Image class to access pixel dataLaurent Pinchart
Replace the manual implementation of frame buffer mapping with the Image class to improve code sharing. The ViewFinder API is updated to take an Image pointer in the render() function to prepare for multi-planar buffer support. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-09-07qcam: Print bytesused for all planesLaurent Pinchart
Fix the debug message that prints frame metadata to print the number of bytes used for each plane, not just the first one. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-09-07libcamera: framebuffer: Prevent modifying the number of metadata planesLaurent Pinchart
The number of metadata planes should always match the number of frame buffer planes. Enforce this by making the vector private and providing accessor functions. As this changes the public API, update all in-tree users accordingly. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
2021-09-02libcamera: Use simpler Signal::disconnect() functionLaurent Pinchart
When disconnecting a signal from a receiver, it is usually not necessary to specify the receiver's slot function explicitly, as the signal is often connected to a single slot for a given receiver. We can thus use a simpler version of Signal::disconnect() that takes a pointer to the receiver object only. This reduces code size, as the disconnect() function is a template function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2021-08-30qcam: main_window: Use offset mapping FrameBufferHirokazu Honda
FrameBuffer::Plane has offset info now. This uses the offset in mapping FrameBuffer in MainWindow. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-08-21qcam: Replace MappedBuffer with Span<uint8_t>Laurent Pinchart
The MappedBuffer structure is a custom container that binds a data pointer with a length. This is exactly what Span is. Use it instead. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-08-03qcam: Support OpenGL ES 2.0Laurent Pinchart
The GL_RG and GL_RED texture formats are not supported in OpenGL ES prior to 3.0. In order to be compatible with OpenGL ES 2.0, use GL_LUMINANCE_ALPHA and GL_LUMINANCE instead. The shader code needs to be updated accordingly for GL_RG, as the second component is now stored in the alpha component instead of the green component. Usage of the red component is fine, the luminance value is stored in the red, green and blue components. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org>
2021-07-11libcamera: buffer: Rename buffer.h to framebuffer.hLaurent Pinchart
libcamera names header files based on the classes they define. The buffer.h file is an exception. Rename it to framebuffer.h. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Add support for RAW8 Bayer formatsAndrey Konovalov
This integrates the vertex and the fragment shaders by Morgan McGuire into qcam. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Set the vertex shader file name in selectFormat()Andrey Konovalov
In preparation to extend the supported formats, make it possible to use different vertex fragment files depending on the format. Make "identity.vert" the default choice. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Use SPDX-License-Identifier in bayer_8.* shadersAndrey Konovalov
bayer_8.* vertex and fragment shaders carry the copy of the 2-Clause BSD License. Replace it with the SPDX-License-Identifier. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Fix wrong comment in bayer_8.fragAndrey Konovalov
Fetching into value[2] corresponds to E0, and fetching into value[3] - to F0. The fetch()-es themselves are correct, but the comments were not. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Copy the shaders for RAW8 Bayer format from motmotAndrey Konovalov
This commit copies the shaders from: https://github.com/motmot/libcamiface/commit/e36d51580510c211afc0430141085eb7a77d811b Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Acked-by: Paul Elder <paul.elder@ideasonboard.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Add support for RAW12 packed formatsAndrey Konovalov
All the four Bayer orders are supported. The 4 LS bits of the 12-bit colour values are dropped as the RGBA format we convert into has only 8 bits per colour. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Add shader to render packed RAW10 formatsAndrey Konovalov
The shader supports all 4 packed RAW10 variants. Simple bi-linear Bayer interpolation of nearest pixels is implemented. The 2 LS bits of the 10-bit colour values are dropped as the RGBA format we convert into has only 8 bits per colour. The texture coordinates passed to the fragment shader are adjusted to point to the nearest pixel in the image. This prevents artifacts when the image is scaled from the frame resolution to the window size. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-30qcam: viewfinder_gl: Change uniform float tex_stepx to vec2 tex_stepAndrey Konovalov
In preparation to extend the supported formats, extend the tex_stepx uniform to cover the steps between texels in both horizontal and vertical directions. Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-06-25libcamera: rename public libcamera dependencyKieran Bingham
Now that we have a libcamera_private, make the public only dependency libcamera_public so that it is clear which interface is being linked. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-06-03qcam: Add libatomic dependencyFabrice Fontaine
Add libatomic dependency due to std::shared_ptr which is used by qcam since its addition in commit 97e8b3a2eb321884fe1e15fb584f41a38cc33d51: https://en.cppreference.com/w/cpp/memory/shared_ptr. This will avoid the following build failure: /srv/storage/autobuild/run/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/9.3.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: src/qcam/qcam.p/main_window.cpp.o: undefined reference to symbol '__atomic_fetch_add_4@@LIBATOMIC_1.0' Fixes: - http://autobuild.buildroot.org/results/d0726b2253f1f3d006e057f3b32c646c4b9b5f7a Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-03-28meson: Summarize which applications and adaptation layers are builtLaurent Pinchart
Add the application and adaptation layers being built to the meson summary. The summary now prints libcamera 0.0.0 Configuration Enabled pipelines: ipu3 raspberrypi rkisp1 simple uvcvideo vimc Android support: True GStreamer support: True V4L2 emulation support: True cam application: True qcam application: True Unit tests: True Subprojects libyuv: YES Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
2021-03-23meson: Use subdir_done() to reduce indentationLaurent Pinchart
Reduce the indentation in the gstreamer and qcam meson.build with subdir_done(). This follows similar patterns in cam and v4l2. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-02-11meson: Fix coding style when declaring arraysLaurent Pinchart
The meson.build files mix array declarations with and without a space after the opening and before the closing square bracket. The vast majority of cases don't use spaces, so standardize on that. While it it, fix indentation in a few places. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-12-01qcam: Make log less verbose by defaultLaurent Pinchart
The qcam log prints one message per frame, which is pretty verbose. This feature is useful for debugging, but not necessarily as a default option. Silence it by default, and add a -v/--verbose command line parameter to make the log verbose. While this could have been handled manually by checking a verbose flag when printing the message, the feature is instead integrated with the Qt log infrastructure to make it more flexible. Messages printed by qDebug() are now silenced by default and controlled by the -v/--verbose argument. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-12-01qcam: main: Fix comment incorrectly referring to the cam applicationLaurent Pinchart
The top file description comment was incorrectly copied from the cam application. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-11-13qcam: Clear the pool of free requests upon stopCapture()Paul Elder
To enable reusing Request objects, we kept a pool of free Requests. This pool was not cleared upon stopping capture, however, which caused a segfault when switching to another camera. Fix this by clearing the Request pool on stopCapture(). Fixes: c753223ad6b9 ("libcamera, android, cam, gstreamer, qcam, v4l2: Reuse Request") Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
2020-11-07qcam: viewfinder_gl: Add support for RGB formatsLaurent Pinchart
Add support for 24-bit and 32-bit RGB formats. The fragment samples the texture and reorders the components, using a pattern set through the RGB_PATTERN macro. The pattern stores the shader vec4 element indices (named {r, g, b, a} by convention, for elements 0 to 3) to be extracted from the texture samples, when interpreted by OpenGL as RGBA. Note that, as textures are created with GL_UNSIGNED_BYTE, the RGBA order corresponds to bytes in memory, while the libcamera formats are named based on the components order in a 32-bit word stored in memory in little endian format. An alternative to manual reordering in the shader would be to set the texture swizzling mask. This is however not available in OpenGL ES before version 3.0, which we don't mandate at the moment. Only the BGR888 and RGB888 formats have been tested, with the vimc pipeline handler. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-07qcam: viewfinder_gl: Store textures in an arrayLaurent Pinchart
In preparation for RGB formats support, store the three Y, U and V textures in an array. This makes the code more generic, and will avoid referring to an RGB texture as textureY_. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-07qcam: viewfinder_gl: Rename yuvData_ to data_Laurent Pinchart
In preparation for RGB formats support, rename the pointer to image data from yuvData_ to data_. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-11-07qcam: viewfinder_gl: Rename YUV.vert to identity.vertLaurent Pinchart
In preparation for RGB formats support, rename the identity vertex shader from YUV.vert to identity.vert. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Andrey Konovalov <andrey.konovalov@linaro.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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