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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-10-12 22:02:10 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-11-07 19:27:33 +0200
commit9e10811bb5ec1cdace2041714f3235e94446738c (patch)
treed0ad7399bb5b07707d96491dce8a0ce149634923 /test/libtest/test.h
parent3badc5c4bea38cd362707ec3da25881f30113fac (diff)
qcam: viewfinder_gl: Add support for RGB formats
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>
Diffstat (limited to 'test/libtest/test.h')
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generated by cgit v1.2.1 (git 2.18.0) at 2024-07-11 01:30:53 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2020, Google Inc.
 *
 * camera_stream.h - Camera HAL stream
 */
#ifndef __ANDROID_CAMERA_STREAM_H__
#define __ANDROID_CAMERA_STREAM_H__

#include <memory>
#include <mutex>
#include <vector>

#include <hardware/camera3.h>

#include <libcamera/buffer.h>
#include <libcamera/camera.h>
#include <libcamera/framebuffer_allocator.h>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>

class CameraDevice;
class CameraMetadata;
class MappedCamera3Buffer;
class PostProcessor;

class CameraStream
{
public:
	/*
	 * Enumeration of CameraStream types.
	 *
	 * A camera stream associates an Android stream to a libcamera stream.
	 * This enumeration describes how the two streams are associated and how
	 * and where data produced from libcamera are delivered to the
	 * Android framework.
	 *
	 * Direct:
	 *
	 * The Android stream is directly mapped onto a libcamera stream: frames
	 * are delivered by the library directly in the memory location
	 * specified by the Android stream (buffer_handle_t->data) and provided
	 * to the framework as they are. The Android stream characteristics are
	 * directly translated to the libcamera stream configuration.
	 *
	 * +-----+                +-----+
	 * |  A  |                |  L  |
	 * +-----+                +-----+
	 *    |                      |
	 *    V                      V
	 * +-----+                +------+
	 * |  B  |<---------------|  FB  |
	 * +-----+                +------+
	 *
	 *
	 * Internal:
	 *
	 * Data for the Android stream is produced by processing a libcamera
	 * stream created by the HAL for that purpose. The libcamera stream
	 * needs to be supplied with intermediate buffers where the library
	 * delivers frames to be processed and then provided to the framework.
	 * The libcamera stream configuration is not a direct translation of the
	 * Android stream characteristics, but it describes the format and size
	 * required for the processing procedure to produce frames in the
	 * Android required format.
	 *
	 * +-----+                +-----+
	 * |  A  |                |  L  |
	 * +-----+                +-----+
	 *    |                      |
	 *    V                      V
	 * +-----+                +------+
	 * |  B  |                |  FB  |
	 * +-----+                +------+
	 *   ^                       |
	 *   |-------Processing------|
	 *
	 *
	 * Mapped:
	 *
	 * Data for the Android stream is produced by processing a libcamera
	 * stream associated with another CameraStream. Mapped camera streams do
	 * not need any memory to be reserved for them as they process data
	 * produced by libcamera for a different stream whose format and size
	 * are compatible with the processing procedure requirements to produce
	 * frames in the Android required format.
	 *
	 * +-----+      +-----+          +-----+
	 * |  A  |      |  A' |          |  L  |
	 * +-----+      +-----+          +-----+
	 *    |            |                |
	 *    V            V                V
	 * +-----+      +-----+          +------+
	 * |  B  |      |  B' |<---------|  FB  |
	 * +-----+      +-----+          +------+
	 *   ^              |