From patchwork Tue Apr 26 11:02:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 15727 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id CE978C326C for ; Tue, 26 Apr 2022 11:03:02 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 5FA7B6564E; Tue, 26 Apr 2022 13:03:02 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org; s=mail; t=1650970982; bh=u0GWr0XFBD34MHNnGfk2T5yscNS0W1+lRomnDScD0js=; h=To:Date:In-Reply-To:References:Subject:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=FvuD+00RLjC9rW0HDV+L+cKzMGiVcpWZsEAYO76cfsi0vYkTJkRHu06gwrPA+htNj ddGiNbRC8QJdduXQRXNPa8RTZLh18lIL0Ebzx4ahFHLyj/gyfUh5WHl95cU1XE/Q49 8VfpSnWqmE9wsnoKh2OLv1JuExZ4gk3nGLDzOVz/zXmVCwty6z+06VsehemaG7sbdp bGSp7vq8cM9DeMcSNd5IHhD2suzvsSBbiYjPRxKnkyC9Uf92PE/vMoy0JyJerGqB6P +mP9rnm+olWk7c17OfNJT/OXP33osDIdtVZt7HN5n3yrlYLL8w0kKRJ+b7ASgwyrtS kfoejdaxRZRBA== Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 659B1604A9 for ; Tue, 26 Apr 2022 13:02:57 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="C1UM9t8O"; dkim-atps=neutral Received: from deskari.lan (91-156-85-209.elisa-laajakaista.fi [91.156.85.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id AD0E7ABC; Tue, 26 Apr 2022 13:02:56 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1650970977; bh=u0GWr0XFBD34MHNnGfk2T5yscNS0W1+lRomnDScD0js=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C1UM9t8OPrqGjEQ0OmZZOB07Ss6wZ1rc4uCe9vBZ6FUi6j8yQzStb6xwo+SNkABOs 0B7k14jDUBy68+AW6hLo+6uab72bElGkfqNJpNNS8iiJnswFrK1S7blOUQFLmAQ23+ PWNBNtUUa9+FpgWldP77XR8iG5YUBDUOLTEJdP2A= To: libcamera-devel@lists.libcamera.org, David Plowman , Kieran Bingham , Laurent Pinchart , Jacopo Mondi Date: Tue, 26 Apr 2022 14:02:36 +0300 Message-Id: <20220426110236.104511-5-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220426110236.104511-1-tomi.valkeinen@ideasonboard.com> References: <20220426110236.104511-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v6 4/4] py: Add cam.py X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Tomi Valkeinen via libcamera-devel From: Tomi Valkeinen Reply-To: Tomi Valkeinen Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Add cam.py, which mimics the 'cam' tool. Four rendering backends are added: * null - Do nothing * kms - Use KMS with dmabufs * qt - SW render on a Qt window * qtgl - OpenGL render on a Qt window All the renderers handle only a few pixel formats, and especially the GL renderer is just a prototype. Signed-off-by: Tomi Valkeinen --- src/py/cam/cam.py | 483 +++++++++++++++++++++++++++++++++++++++ src/py/cam/cam_kms.py | 183 +++++++++++++++ src/py/cam/cam_null.py | 47 ++++ src/py/cam/cam_qt.py | 354 ++++++++++++++++++++++++++++ src/py/cam/cam_qtgl.py | 385 +++++++++++++++++++++++++++++++ src/py/cam/gl_helpers.py | 74 ++++++ 6 files changed, 1526 insertions(+) create mode 100755 src/py/cam/cam.py create mode 100644 src/py/cam/cam_kms.py create mode 100644 src/py/cam/cam_null.py create mode 100644 src/py/cam/cam_qt.py create mode 100644 src/py/cam/cam_qtgl.py create mode 100644 src/py/cam/gl_helpers.py diff --git a/src/py/cam/cam.py b/src/py/cam/cam.py new file mode 100755 index 00000000..4efa6459 --- /dev/null +++ b/src/py/cam/cam.py @@ -0,0 +1,483 @@ +#!/usr/bin/env python3 + +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen + +import argparse +import binascii +import libcamera as libcam +import os +import sys + + +class CustomCameraAction(argparse.Action): + def __call__(self, parser, namespace, values, option_string=None): + print(self.dest, values) + + if "camera" not in namespace or namespace.camera is None: + setattr(namespace, "camera", []) + + previous = namespace.camera + previous.append((self.dest, values)) + setattr(namespace, "camera", previous) + + +class CustomAction(argparse.Action): + def __init__(self, option_strings, dest, **kwargs): + super().__init__(option_strings, dest, default={}, **kwargs) + + def __call__(self, parser, namespace, values, option_string=None): + if len(namespace.camera) == 0: + print(f"Option {option_string} requires a --camera context") + sys.exit(-1) + + if self.type == bool: + values = True + + current = namespace.camera[-1] + + data = getattr(namespace, self.dest) + + if self.nargs == "+": + if current not in data: + data[current] = [] + + data[current] += values + else: + data[current] = values + + +def do_cmd_list(cm): + print("Available cameras:") + + for idx, c in enumerate(cm.cameras): + print(f"{idx + 1}: {c.id}") + + +def do_cmd_list_props(ctx): + camera = ctx["camera"] + + print("Properties for", ctx["id"]) + + for name, prop in camera.properties.items(): + print("\t{}: {}".format(name, prop)) + + +def do_cmd_list_controls(ctx): + camera = ctx["camera"] + + print("Controls for", ctx["id"]) + + for name, prop in camera.controls.items(): + print("\t{}: {}".format(name, prop)) + + +def do_cmd_info(ctx): + camera = ctx["camera"] + + print("Stream info for", ctx["id"]) + + roles = [libcam.StreamRole.Viewfinder] + + camconfig = camera.generateConfiguration(roles) + if camconfig is None: + raise Exception("Generating config failed") + + for i, stream_config in enumerate(camconfig): + print("\t{}: {}".format(i, stream_config.toString())) + + formats = stream_config.formats + for fmt in formats.pixelFormats: + print("\t * Pixelformat:", fmt, formats.range(fmt)) + + for size in formats.sizes(fmt): + print("\t -", size) + + +def acquire(ctx): + camera = ctx["camera"] + + camera.acquire() + + +def release(ctx): + camera = ctx["camera"] + + camera.release() + + +def parse_streams(ctx): + streams = [] + + for stream_desc in ctx["opt-stream"]: + stream_opts = {"role": libcam.StreamRole.Viewfinder} + + for stream_opt in stream_desc.split(","): + if stream_opt == 0: + continue + + arr = stream_opt.split("=") + if len(arr) != 2: + print("Bad stream option", stream_opt) + sys.exit(-1) + + key = arr[0] + value = arr[1] + + if key in ["width", "height"]: + value = int(value) + elif key == "role": + rolemap = { + "still": libcam.StreamRole.StillCapture, + "raw": libcam.StreamRole.Raw, + "video": libcam.StreamRole.VideoRecording, + "viewfinder": libcam.StreamRole.Viewfinder, + } + + role = rolemap.get(value.lower(), None) + + if role is None: + print("Bad stream role", value) + sys.exit(-1) + + value = role + elif key == "pixelformat": + pass + else: + print("Bad stream option key", key) + sys.exit(-1) + + stream_opts[key] = value + + streams.append(stream_opts) + + return streams + + +def configure(ctx): + camera = ctx["camera"] + + streams = parse_streams(ctx) + + roles = [opts["role"] for opts in streams] + + camconfig = camera.generateConfiguration(roles) + if camconfig is None: + raise Exception("Generating config failed") + + for idx, stream_opts in enumerate(streams): + stream_config = camconfig.at(idx) + + if "width" in stream_opts and "height" in stream_opts: + stream_config.size = (stream_opts["width"], stream_opts["height"]) + + if "pixelformat" in stream_opts: + stream_config.pixelFormat = stream_opts["pixelformat"] + + stat = camconfig.validate() + + if stat == libcam.ConfigurationStatus.Invalid: + print("Camera configuration invalid") + exit(-1) + elif stat == libcam.ConfigurationStatus.Adjusted: + if ctx["opt-strict-formats"]: + print("Adjusting camera configuration disallowed by --strict-formats argument") + exit(-1) + + print("Camera configuration adjusted") + + r = camera.configure(camconfig) + if r != 0: + raise Exception("Configure failed") + + ctx["stream-names"] = {} + ctx["streams"] = [] + + for idx, stream_config in enumerate(camconfig): + stream = stream_config.stream + ctx["streams"].append(stream) + ctx["stream-names"][stream] = "stream" + str(idx) + print("{}-{}: stream config {}".format(ctx["id"], ctx["stream-names"][stream], stream.configuration.toString())) + + +def alloc_buffers(ctx): + camera = ctx["camera"] + + allocator = libcam.FrameBufferAllocator(camera) + + for idx, stream in enumerate(ctx["streams"]): + ret = allocator.allocate(stream) + if ret < 0: + print("Can't allocate buffers") + exit(-1) + + allocated = len(allocator.buffers(stream)) + + print("{}-{}: Allocated {} buffers".format(ctx["id"], ctx["stream-names"][stream], allocated)) + + ctx["allocator"] = allocator + + +def create_requests(ctx): + camera = ctx["camera"] + + ctx["requests"] = [] + + # Identify the stream with the least number of buffers + num_bufs = min([len(ctx["allocator"].buffers(stream)) for stream in ctx["streams"]]) + + requests = [] + + for buf_num in range(num_bufs): + request = camera.createRequest(ctx["idx"]) + + if request is None: + print("Can't create request") + exit(-1) + + for stream in ctx["streams"]: + buffers = ctx["allocator"].buffers(stream) + buffer = buffers[buf_num] + + ret = request.addBuffer(stream, buffer) + if ret < 0: + print("Can't set buffer for request") + exit(-1) + + requests.append(request) + + ctx["requests"] = requests + + +def start(ctx): + camera = ctx["camera"] + + camera.start() + + +def stop(ctx): + camera = ctx["camera"] + + camera.stop() + + +def queue_requests(ctx): + camera = ctx["camera"] + + for request in ctx["requests"]: + camera.queueRequest(request) + ctx["reqs-queued"] += 1 + + del ctx["requests"] + + +def capture_init(contexts): + for ctx in contexts: + acquire(ctx) + + for ctx in contexts: + configure(ctx) + + for ctx in contexts: + alloc_buffers(ctx) + + for ctx in contexts: + create_requests(ctx) + + +def capture_start(contexts): + for ctx in contexts: + start(ctx) + + for ctx in contexts: + queue_requests(ctx) + + +# Called from renderer when there is a libcamera event +def event_handler(state): + cm = state["cm"] + contexts = state["contexts"] + + os.read(cm.efd, 8) + + reqs = cm.getReadyRequests() + + for req in reqs: + ctx = next(ctx for ctx in contexts if ctx["idx"] == req.cookie) + request_handler(state, ctx, req) + + running = any(ctx["reqs-completed"] < ctx["opt-capture"] for ctx in contexts) + return running + + +def request_handler(state, ctx, req): + if req.status != libcam.RequestStatus.Complete: + raise Exception("{}: Request failed: {}".format(ctx["id"], req.status)) + + buffers = req.buffers + + # Compute the frame rate. The timestamp is arbitrarily retrieved from + # the first buffer, as all buffers should have matching timestamps. + ts = buffers[next(iter(buffers))].metadata.timestamp + last = ctx.get("last", 0) + fps = 1000000000.0 / (ts - last) if (last != 0 and (ts - last) != 0) else 0 + ctx["last"] = ts + ctx["fps"] = fps + + for stream, fb in buffers.items(): + stream_name = ctx["stream-names"][stream] + + crcs = [] + if ctx["opt-crc"]: + with fb.mmap(0) as b: + crc = binascii.crc32(b) + crcs.append(crc) + + meta = fb.metadata + + print("{:.6f} ({:.2f} fps) {}-{}: seq {}, bytes {}, CRCs {}" + .format(ts / 1000000000, fps, + ctx["id"], stream_name, + meta.sequence, meta.bytesused, + crcs)) + + if ctx["opt-metadata"]: + reqmeta = req.metadata + for ctrl, val in reqmeta.items(): + print(f"\t{ctrl} = {val}") + + if ctx["opt-save-frames"]: + with fb.mmap(0) as b: + filename = "frame-{}-{}-{}.data".format(ctx["id"], stream_name, ctx["reqs-completed"]) + with open(filename, "wb") as f: + f.write(b) + + state["renderer"].request_handler(ctx, req) + + ctx["reqs-completed"] += 1 + + +# Called from renderer when it has finished with a request +def request_prcessed(ctx, req): + camera = ctx["camera"] + + if ctx["reqs-queued"] < ctx["opt-capture"]: + req.reuse() + camera.queueRequest(req) + ctx["reqs-queued"] += 1 + + +def capture_deinit(contexts): + for ctx in contexts: + stop(ctx) + + for ctx in contexts: + release(ctx) + + +def do_cmd_capture(state): + capture_init(state["contexts"]) + + renderer = state["renderer"] + + renderer.setup() + + capture_start(state["contexts"]) + + renderer.run() + + capture_deinit(state["contexts"]) + + +def main(): + parser = argparse.ArgumentParser() + # global options + parser.add_argument("-l", "--list", action="store_true", help="List all cameras") + parser.add_argument("-c", "--camera", type=int, action="extend", nargs=1, default=[], help="Specify which camera to operate on, by index") + parser.add_argument("-p", "--list-properties", action="store_true", help="List cameras properties") + parser.add_argument("--list-controls", action="store_true", help="List cameras controls") + parser.add_argument("-I", "--info", action="store_true", help="Display information about stream(s)") + parser.add_argument("-R", "--renderer", default="null", help="Renderer (null, kms, qt, qtgl)") + + # per camera options + parser.add_argument("-C", "--capture", nargs="?", type=int, const=1000000, action=CustomAction, help="Capture until interrupted by user or until CAPTURE frames captured") + parser.add_argument("--crc", nargs=0, type=bool, action=CustomAction, help="Print CRC32 for captured frames") + parser.add_argument("--save-frames", nargs=0, type=bool, action=CustomAction, help="Save captured frames to files") + parser.add_argument("--metadata", nargs=0, type=bool, action=CustomAction, help="Print the metadata for completed requests") + parser.add_argument("--strict-formats", type=bool, nargs=0, action=CustomAction, help="Do not allow requested stream format(s) to be adjusted") + parser.add_argument("-s", "--stream", nargs="+", action=CustomAction) + args = parser.parse_args() + + cm = libcam.CameraManager.singleton() + + if args.list: + do_cmd_list(cm) + + contexts = [] + + for cam_idx in args.camera: + camera = next((c for i, c in enumerate(cm.cameras) if i + 1 == cam_idx), None) + + if camera is None: + print("Unable to find camera", cam_idx) + return -1 + + contexts.append({ + "camera": camera, + "idx": cam_idx, + "id": "cam" + str(cam_idx), + "reqs-queued": 0, + "reqs-completed": 0, + "opt-capture": args.capture.get(cam_idx, False), + "opt-crc": args.crc.get(cam_idx, False), + "opt-save-frames": args.save_frames.get(cam_idx, False), + "opt-metadata": args.metadata.get(cam_idx, False), + "opt-strict-formats": args.strict_formats.get(cam_idx, False), + "opt-stream": args.stream.get(cam_idx, ["role=viewfinder"]), + }) + + for ctx in contexts: + print("Using camera {} as {}".format(ctx["camera"].id, ctx["id"])) + + for ctx in contexts: + if args.list_properties: + do_cmd_list_props(ctx) + if args.list_controls: + do_cmd_list_controls(ctx) + if args.info: + do_cmd_info(ctx) + + if args.capture: + + state = { + "cm": cm, + "contexts": contexts, + "event_handler": event_handler, + "request_prcessed": request_prcessed, + } + + if args.renderer == "null": + import cam_null + renderer = cam_null.NullRenderer(state) + elif args.renderer == "kms": + import cam_kms + renderer = cam_kms.KMSRenderer(state) + elif args.renderer == "qt": + import cam_qt + renderer = cam_qt.QtRenderer(state) + elif args.renderer == "qtgl": + import cam_qtgl + renderer = cam_qtgl.QtRenderer(state) + else: + print("Bad renderer", args.renderer) + return -1 + + state["renderer"] = renderer + + do_cmd_capture(state) + + return 0 + + +if __name__ == "__main__": + sys.exit(main()) diff --git a/src/py/cam/cam_kms.py b/src/py/cam/cam_kms.py new file mode 100644 index 00000000..ee9fe6c7 --- /dev/null +++ b/src/py/cam/cam_kms.py @@ -0,0 +1,183 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen + +import pykms +import selectors +import sys + +FMT_MAP = { + "RGB888": pykms.PixelFormat.RGB888, + "YUYV": pykms.PixelFormat.YUYV, + "ARGB8888": pykms.PixelFormat.ARGB8888, + "XRGB8888": pykms.PixelFormat.XRGB8888, +} + + +class KMSRenderer: + def __init__(self, state): + self.state = state + + self.cm = state["cm"] + self.contexts = state["contexts"] + self.running = False + + card = pykms.Card() + + res = pykms.ResourceManager(card) + conn = res.reserve_connector() + crtc = res.reserve_crtc(conn) + mode = conn.get_default_mode() + modeb = mode.to_blob(card) + + req = pykms.AtomicReq(card) + req.add_connector(conn, crtc) + req.add_crtc(crtc, modeb) + r = req.commit_sync(allow_modeset=True) + assert(r == 0) + + self.card = card + self.resman = res + self.crtc = crtc + self.mode = mode + + self.bufqueue = [] + self.current = None + self.next = None + self.cam_2_drm = {} + + # KMS + + def close(self): + req = pykms.AtomicReq(self.card) + for s in self.streams: + req.add_plane(s["plane"], None, None, dst=(0, 0, 0, 0)) + req.commit() + + def add_plane(self, req, stream, fb): + s = next(s for s in self.streams if s["stream"] == stream) + idx = s["idx"] + plane = s["plane"] + + if idx % 2 == 0: + x = 0 + else: + x = self.mode.hdisplay - fb.width + + if idx // 2 == 0: + y = 0 + else: + y = self.mode.vdisplay - fb.height + + req.add_plane(plane, fb, self.crtc, dst=(x, y, fb.width, fb.height)) + + def apply_request(self, drmreq): + + buffers = drmreq["camreq"].buffers + + for stream, fb in buffers.items(): + drmfb = self.cam_2_drm.get(fb, None) + + req = pykms.AtomicReq(self.card) + self.add_plane(req, stream, drmfb) + req.commit() + + def handle_page_flip(self, frame, time): + old = self.current + self.current = self.next + + if len(self.bufqueue) > 0: + self.next = self.bufqueue.pop(0) + else: + self.next = None + + if self.next: + drmreq = self.next + + self.apply_request(drmreq) + + if old: + req = old["camreq"] + ctx = old["camctx"] + self.state["request_prcessed"](ctx, req) + + def queue(self, drmreq): + if not self.next: + self.next = drmreq + self.apply_request(drmreq) + else: + self.bufqueue.append(drmreq) + + # libcamera + + def setup(self): + self.streams = [] + + idx = 0 + for ctx in self.contexts: + for stream in ctx["streams"]: + + cfg = stream.configuration + fmt = cfg.pixelFormat + fmt = FMT_MAP[fmt] + + plane = self.resman.reserve_generic_plane(self.crtc, fmt) + assert(plane is not None) + + self.streams.append({ + "idx": idx, + "stream": stream, + "plane": plane, + "fmt": fmt, + "size": cfg.size, + }) + + for fb in ctx["allocator"].buffers(stream): + w, h = cfg.size + stride = cfg.stride + fd = fb.fd(0) + drmfb = pykms.DmabufFramebuffer(self.card, w, h, fmt, + [fd], [stride], [0]) + self.cam_2_drm[fb] = drmfb + + idx += 1 + + def readdrm(self, fileobj): + for ev in self.card.read_events(): + if ev.type == pykms.DrmEventType.FLIP_COMPLETE: + self.handle_page_flip(ev.seq, ev.time) + + def readcam(self, fd): + self.running = self.state["event_handler"](self.state) + + def readkey(self, fileobj): + sys.stdin.readline() + self.running = False + + def run(self): + print("Capturing...") + + self.running = True + + sel = selectors.DefaultSelector() + sel.register(self.card.fd, selectors.EVENT_READ, self.readdrm) + sel.register(self.cm.efd, selectors.EVENT_READ, self.readcam) + sel.register(sys.stdin, selectors.EVENT_READ, self.readkey) + + print("Press enter to exit") + + while self.running: + events = sel.select() + for key, mask in events: + callback = key.data + callback(key.fileobj) + + print("Exiting...") + + def request_handler(self, ctx, req): + + drmreq = { + "camctx": ctx, + "camreq": req, + } + + self.queue(drmreq) diff --git a/src/py/cam/cam_null.py b/src/py/cam/cam_null.py new file mode 100644 index 00000000..f6e30835 --- /dev/null +++ b/src/py/cam/cam_null.py @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen + +import selectors +import sys + + +class NullRenderer: + def __init__(self, state): + self.state = state + + self.cm = state["cm"] + self.contexts = state["contexts"] + + self.running = False + + def setup(self): + pass + + def run(self): + print("Capturing...") + + self.running = True + + sel = selectors.DefaultSelector() + sel.register(self.cm.efd, selectors.EVENT_READ, self.readcam) + sel.register(sys.stdin, selectors.EVENT_READ, self.readkey) + + print("Press enter to exit") + + while self.running: + events = sel.select() + for key, mask in events: + callback = key.data + callback(key.fileobj) + + print("Exiting...") + + def readcam(self, fd): + self.running = self.state["event_handler"](self.state) + + def readkey(self, fileobj): + sys.stdin.readline() + self.running = False + + def request_handler(self, ctx, req): + self.state["request_prcessed"](ctx, req) diff --git a/src/py/cam/cam_qt.py b/src/py/cam/cam_qt.py new file mode 100644 index 00000000..30fb7a1d --- /dev/null +++ b/src/py/cam/cam_qt.py @@ -0,0 +1,354 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen +# +# Debayering code from PiCamera documentation + +from io import BytesIO +from numpy.lib.stride_tricks import as_strided +from PIL import Image +from PIL.ImageQt import ImageQt +from PyQt5 import QtCore, QtGui, QtWidgets +import numpy as np +import sys + + +def rgb_to_pix(rgb): + img = Image.frombuffer("RGB", (rgb.shape[1], rgb.shape[0]), rgb) + qim = ImageQt(img).copy() + pix = QtGui.QPixmap.fromImage(qim) + return pix + + +def separate_components(data, r0, g0, g1, b0): + # Now to split the data up into its red, green, and blue components. The + # Bayer pattern of the OV5647 sensor is BGGR. In other words the first + # row contains alternating green/blue elements, the second row contains + # alternating red/green elements, and so on as illustrated below: + # + # GBGBGBGBGBGBGB + # RGRGRGRGRGRGRG + # GBGBGBGBGBGBGB + # RGRGRGRGRGRGRG + # + # Please note that if you use vflip or hflip to change the orientation + # of the capture, you must flip the Bayer pattern accordingly + + rgb = np.zeros(data.shape + (3,), dtype=data.dtype) + rgb[r0[1]::2, r0[0]::2, 0] = data[r0[1]::2, r0[0]::2] # Red + rgb[g0[1]::2, g0[0]::2, 1] = data[g0[1]::2, g0[0]::2] # Green + rgb[g1[1]::2, g1[0]::2, 1] = data[g1[1]::2, g1[0]::2] # Green + rgb[b0[1]::2, b0[0]::2, 2] = data[b0[1]::2, b0[0]::2] # Blue + + return rgb + + +def demosaic(rgb, r0, g0, g1, b0): + # At this point we now have the raw Bayer data with the correct values + # and colors but the data still requires de-mosaicing and + # post-processing. If you wish to do this yourself, end the script here! + # + # Below we present a fairly naive de-mosaic method that simply + # calculates the weighted average of a pixel based on the pixels + # surrounding it. The weighting is provided b0[1] a b0[1]te representation of + # the Bayer filter which we construct first: + + bayer = np.zeros(rgb.shape, dtype=np.uint8) + bayer[r0[1]::2, r0[0]::2, 0] = 1 # Red + bayer[g0[1]::2, g0[0]::2, 1] = 1 # Green + bayer[g1[1]::2, g1[0]::2, 1] = 1 # Green + bayer[b0[1]::2, b0[0]::2, 2] = 1 # Blue + + # Allocate an array to hold our output with the same shape as the input + # data. After this we define the size of window that will be used to + # calculate each weighted average (3x3). Then we pad out the rgb and + # bayer arrays, adding blank pixels at their edges to compensate for the + # size of the window when calculating averages for edge pixels. + + output = np.empty(rgb.shape, dtype=rgb.dtype) + window = (3, 3) + borders = (window[0] - 1, window[1] - 1) + border = (borders[0] // 2, borders[1] // 2) + + # rgb_pad = np.zeros(( + # rgb.shape[0] + borders[0], + # rgb.shape[1] + borders[1], + # rgb.shape[2]), dtype=rgb.dtype) + # rgb_pad[ + # border[0]:rgb_pad.shape[0] - border[0], + # border[1]:rgb_pad.shape[1] - border[1], + # :] = rgb + # rgb = rgb_pad + # + # bayer_pad = np.zeros(( + # bayer.shape[0] + borders[0], + # bayer.shape[1] + borders[1], + # bayer.shape[2]), dtype=bayer.dtype) + # bayer_pad[ + # border[0]:bayer_pad.shape[0] - border[0], + # border[1]:bayer_pad.shape[1] - border[1], + # :] = bayer + # bayer = bayer_pad + + # In numpy >=1.7.0 just use np.pad (version in Raspbian is 1.6.2 at the + # time of writing...) + # + rgb = np.pad(rgb, [ + (border[0], border[0]), + (border[1], border[1]), + (0, 0), + ], 'constant') + bayer = np.pad(bayer, [ + (border[0], border[0]), + (border[1], border[1]), + (0, 0), + ], 'constant') + + # For each plane in the RGB data, we use a nifty numpy trick + # (as_strided) to construct a view over the plane of 3x3 matrices. We do + # the same for the bayer array, then use Einstein summation on each + # (np.sum is simpler, but copies the data so it's slower), and divide + # the results to get our weighted average: + + for plane in range(3): + p = rgb[..., plane] + b = bayer[..., plane] + pview = as_strided(p, shape=( + p.shape[0] - borders[0], + p.shape[1] - borders[1]) + window, strides=p.strides * 2) + bview = as_strided(b, shape=( + b.shape[0] - borders[0], + b.shape[1] - borders[1]) + window, strides=b.strides * 2) + psum = np.einsum('ijkl->ij', pview) + bsum = np.einsum('ijkl->ij', bview) + output[..., plane] = psum // bsum + + return output + + +def to_rgb(fmt, size, data): + w = size[0] + h = size[1] + + if fmt == "YUYV": + # YUV422 + yuyv = data.reshape((h, w // 2 * 4)) + + # YUV444 + yuv = np.empty((h, w, 3), dtype=np.uint8) + yuv[:, :, 0] = yuyv[:, 0::2] # Y + yuv[:, :, 1] = yuyv[:, 1::4].repeat(2, axis=1) # U + yuv[:, :, 2] = yuyv[:, 3::4].repeat(2, axis=1) # V + + m = np.array([ + [ 1.0, 1.0, 1.0], + [-0.000007154783816076815, -0.3441331386566162, 1.7720025777816772], + [ 1.4019975662231445, -0.7141380310058594 , 0.00001542569043522235] + ]) + + rgb = np.dot(yuv, m) + rgb[:, :, 0] -= 179.45477266423404 + rgb[:, :, 1] += 135.45870971679688 + rgb[:, :, 2] -= 226.8183044444304 + rgb = rgb.astype(np.uint8) + + elif fmt == "RGB888": + rgb = data.reshape((h, w, 3)) + rgb[:, :, [0, 1, 2]] = rgb[:, :, [2, 1, 0]] + + elif fmt == "BGR888": + rgb = data.reshape((h, w, 3)) + + elif fmt in ["ARGB8888", "XRGB8888"]: + rgb = data.reshape((h, w, 4)) + rgb = np.flip(rgb, axis=2) + # drop alpha component + rgb = np.delete(rgb, np.s_[0::4], axis=2) + + elif fmt.startswith("S"): + bayer_pattern = fmt[1:5] + bitspp = int(fmt[5:]) + + # TODO: shifting leaves the lowest bits 0 + if bitspp == 8: + data = data.reshape((h, w)) + data = data.astype(np.uint16) << 8 + elif bitspp in [10, 12]: + data = data.view(np.uint16) + data = data.reshape((h, w)) + data = data << (16 - bitspp) + else: + raise Exception("Bad bitspp:" + str(bitspp)) + + idx = bayer_pattern.find("R") + assert(idx != -1) + r0 = (idx % 2, idx // 2) + + idx = bayer_pattern.find("G") + assert(idx != -1) + g0 = (idx % 2, idx // 2) + + idx = bayer_pattern.find("G", idx + 1) + assert(idx != -1) + g1 = (idx % 2, idx // 2) + + idx = bayer_pattern.find("B") + assert(idx != -1) + b0 = (idx % 2, idx // 2) + + rgb = separate_components(data, r0, g0, g1, b0) + rgb = demosaic(rgb, r0, g0, g1, b0) + rgb = (rgb >> 8).astype(np.uint8) + + else: + rgb = None + + return rgb + + +class QtRenderer: + def __init__(self, state): + self.state = state + + self.cm = state["cm"] + self.contexts = state["contexts"] + + def setup(self): + self.app = QtWidgets.QApplication([]) + + windows = [] + + for ctx in self.contexts: + camera = ctx["camera"] + + for stream in ctx["streams"]: + fmt = stream.configuration.pixelFormat + size = stream.configuration.size + + window = MainWindow(ctx, stream) + window.setAttribute(QtCore.Qt.WA_ShowWithoutActivating) + window.show() + windows.append(window) + + self.windows = windows + + def run(self): + camnotif = QtCore.QSocketNotifier(self.cm.efd, QtCore.QSocketNotifier.Read) + camnotif.activated.connect(lambda x: self.readcam()) + + keynotif = QtCore.QSocketNotifier(sys.stdin.fileno(), QtCore.QSocketNotifier.Read) + keynotif.activated.connect(lambda x: self.readkey()) + + print("Capturing...") + + self.app.exec() + + print("Exiting...") + + def readcam(self): + running = self.state["event_handler"](self.state) + + if not running: + self.app.quit() + + def readkey(self): + sys.stdin.readline() + self.app.quit() + + def request_handler(self, ctx, req): + buffers = req.buffers + + for stream, fb in buffers.items(): + wnd = next(wnd for wnd in self.windows if wnd.stream == stream) + + wnd.handle_request(stream, fb) + + self.state["request_prcessed"](ctx, req) + + def cleanup(self): + for w in self.windows: + w.close() + + +class MainWindow(QtWidgets.QWidget): + def __init__(self, ctx, stream): + super().__init__() + + self.ctx = ctx + self.stream = stream + + self.label = QtWidgets.QLabel() + + windowLayout = QtWidgets.QHBoxLayout() + self.setLayout(windowLayout) + + windowLayout.addWidget(self.label) + + controlsLayout = QtWidgets.QVBoxLayout() + windowLayout.addLayout(controlsLayout) + + windowLayout.addStretch() + + group = QtWidgets.QGroupBox("Info") + groupLayout = QtWidgets.QVBoxLayout() + group.setLayout(groupLayout) + controlsLayout.addWidget(group) + + lab = QtWidgets.QLabel(ctx["id"]) + groupLayout.addWidget(lab) + + self.frameLabel = QtWidgets.QLabel() + groupLayout.addWidget(self.frameLabel) + + group = QtWidgets.QGroupBox("Properties") + groupLayout = QtWidgets.QVBoxLayout() + group.setLayout(groupLayout) + controlsLayout.addWidget(group) + + camera = ctx["camera"] + + for k, v in camera.properties.items(): + lab = QtWidgets.QLabel() + lab.setText(k + " = " + str(v)) + groupLayout.addWidget(lab) + + group = QtWidgets.QGroupBox("Controls") + groupLayout = QtWidgets.QVBoxLayout() + group.setLayout(groupLayout) + controlsLayout.addWidget(group) + + for k, (min, max, default) in camera.controls.items(): + lab = QtWidgets.QLabel() + lab.setText("{} = {}/{}/{}".format(k, min, max, default)) + groupLayout.addWidget(lab) + + controlsLayout.addStretch() + + def buf_to_qpixmap(self, stream, fb): + with fb.mmap(0) as b: + cfg = stream.configuration + w, h = cfg.size + pitch = cfg.stride + + if cfg.pixelFormat == "MJPEG": + img = Image.open(BytesIO(b)) + qim = ImageQt(img).copy() + pix = QtGui.QPixmap.fromImage(qim) + else: + data = np.array(b, dtype=np.uint8) + rgb = to_rgb(cfg.pixelFormat, cfg.size, data) + + if rgb is None: + raise Exception("Format not supported: " + cfg.pixelFormat) + + pix = rgb_to_pix(rgb) + + return pix + + def handle_request(self, stream, fb): + ctx = self.ctx + + pix = self.buf_to_qpixmap(stream, fb) + self.label.setPixmap(pix) + + self.frameLabel.setText("Queued: {}\nDone: {}\nFps: {:.2f}" + .format(ctx["reqs-queued"], ctx["reqs-completed"], ctx["fps"])) diff --git a/src/py/cam/cam_qtgl.py b/src/py/cam/cam_qtgl.py new file mode 100644 index 00000000..8f9ab457 --- /dev/null +++ b/src/py/cam/cam_qtgl.py @@ -0,0 +1,385 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen + +from PyQt5 import QtCore, QtWidgets +from PyQt5.QtCore import Qt + +import math +import numpy as np +import os +import sys + +os.environ["PYOPENGL_PLATFORM"] = "egl" + +import OpenGL +# OpenGL.FULL_LOGGING = True + +from OpenGL import GL as gl +from OpenGL.EGL.EXT.image_dma_buf_import import * +from OpenGL.EGL.KHR.image import * +from OpenGL.EGL.VERSION.EGL_1_0 import * +from OpenGL.EGL.VERSION.EGL_1_2 import * +from OpenGL.EGL.VERSION.EGL_1_3 import * + +from OpenGL.GLES2.OES.EGL_image import * +from OpenGL.GLES2.OES.EGL_image_external import * +from OpenGL.GLES2.VERSION.GLES2_2_0 import * +from OpenGL.GLES3.VERSION.GLES3_3_0 import * + +from OpenGL.GL import shaders + +from gl_helpers import * + +# libcamera format string -> DRM fourcc +FMT_MAP = { + "RGB888": "RG24", + "XRGB8888": "XR24", + "ARGB8888": "AR24", + "YUYV": "YUYV", +} + + +class EglState: + def __init__(self): + self.create_display() + self.choose_config() + self.create_context() + self.check_extensions() + + def create_display(self): + xdpy = getEGLNativeDisplay() + dpy = eglGetDisplay(xdpy) + self.display = dpy + + def choose_config(self): + dpy = self.display + + major, minor = EGLint(), EGLint() + + b = eglInitialize(dpy, major, minor) + assert(b) + + print("EGL {} {}".format( + eglQueryString(dpy, EGL_VENDOR).decode(), + eglQueryString(dpy, EGL_VERSION).decode())) + + check_egl_extensions(dpy, ["EGL_EXT_image_dma_buf_import"]) + + b = eglBindAPI(EGL_OPENGL_ES_API) + assert(b) + + def print_config(dpy, cfg): + + def _getconf(dpy, cfg, a): + value = ctypes.c_long() + eglGetConfigAttrib(dpy, cfg, a, value) + return value.value + + getconf = lambda a: _getconf(dpy, cfg, a) + + print("EGL Config {}: color buf {}/{}/{}/{} = {}, depth {}, stencil {}, native visualid {}, native visualtype {}".format( + getconf(EGL_CONFIG_ID), + getconf(EGL_ALPHA_SIZE), + getconf(EGL_RED_SIZE), + getconf(EGL_GREEN_SIZE), + getconf(EGL_BLUE_SIZE), + getconf(EGL_BUFFER_SIZE), + getconf(EGL_DEPTH_SIZE), + getconf(EGL_STENCIL_SIZE), + getconf(EGL_NATIVE_VISUAL_ID), + getconf(EGL_NATIVE_VISUAL_TYPE))) + + if False: + num_configs = ctypes.c_long() + eglGetConfigs(dpy, None, 0, num_configs) + print("{} configs".format(num_configs.value)) + + configs = (EGLConfig * num_configs.value)() + eglGetConfigs(dpy, configs, num_configs.value, num_configs) + for config_id in configs: + print_config(dpy, config_id) + + config_attribs = [ + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RED_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_BLUE_SIZE, 8, + EGL_ALPHA_SIZE, 0, + EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL_NONE, + ] + + n = EGLint() + configs = (EGLConfig * 1)() + b = eglChooseConfig(dpy, config_attribs, configs, 1, n) + assert(b and n.value == 1) + config = configs[0] + + print("Chosen Config:") + print_config(dpy, config) + + self.config = config + + def create_context(self): + dpy = self.display + + context_attribs = [ + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE, + ] + + context = eglCreateContext(dpy, self.config, EGL_NO_CONTEXT, context_attribs) + assert(context) + + b = eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, context) + assert(b) + + self.context = context + + def check_extensions(self): + check_gl_extensions(["GL_OES_EGL_image"]) + + assert(eglCreateImageKHR) + assert(eglDestroyImageKHR) + assert(glEGLImageTargetTexture2DOES) + + +class QtRenderer: + def __init__(self, state): + self.state = state + + def setup(self): + self.app = QtWidgets.QApplication([]) + + window = MainWindow(self.state) + window.setAttribute(QtCore.Qt.WA_ShowWithoutActivating) + window.show() + + self.window = window + + def run(self): + camnotif = QtCore.QSocketNotifier(self.state["cm"].efd, QtCore.QSocketNotifier.Read) + camnotif.activated.connect(lambda x: self.readcam()) + + keynotif = QtCore.QSocketNotifier(sys.stdin.fileno(), QtCore.QSocketNotifier.Read) + keynotif.activated.connect(lambda x: self.readkey()) + + print("Capturing...") + + self.app.exec() + + print("Exiting...") + + def readcam(self): + running = self.state["event_handler"](self.state) + + if not running: + self.app.quit() + + def readkey(self): + sys.stdin.readline() + self.app.quit() + + def request_handler(self, ctx, req): + self.window.handle_request(ctx, req) + + def cleanup(self): + self.window.close() + + +class MainWindow(QtWidgets.QWidget): + def __init__(self, state): + super().__init__() + + self.setAttribute(Qt.WA_PaintOnScreen) + self.setAttribute(Qt.WA_NativeWindow) + + self.state = state + + self.textures = {} + self.reqqueue = {} + self.current = {} + + for ctx in self.state["contexts"]: + + self.reqqueue[ctx["idx"]] = [] + self.current[ctx["idx"]] = [] + + for stream in ctx["streams"]: + fmt = stream.configuration.pixelFormat + size = stream.configuration.size + + if fmt not in FMT_MAP: + raise Exception("Unsupported pixel format: " + str(fmt)) + + self.textures[stream] = None + + num_tiles = len(self.textures) + self.num_columns = math.ceil(math.sqrt(num_tiles)) + self.num_rows = math.ceil(num_tiles / self.num_columns) + + self.egl = EglState() + + self.surface = None + + def paintEngine(self): + return None + + def create_surface(self): + native_surface = c_void_p(self.winId().__int__()) + surface = eglCreateWindowSurface(self.egl.display, self.egl.config, + native_surface, None) + + b = eglMakeCurrent(self.egl.display, self.surface, self.surface, self.egl.context) + assert(b) + + self.surface = surface + + def init_gl(self): + self.create_surface() + + vertShaderSrc = """ + attribute vec2 aPosition; + varying vec2 texcoord; + + void main() + { + gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0); + texcoord.x = aPosition.x; + texcoord.y = 1.0 - aPosition.y; + } + """ + fragShaderSrc = """ + #extension GL_OES_EGL_image_external : enable + precision mediump float; + varying vec2 texcoord; + uniform samplerExternalOES texture; + + void main() + { + gl_FragColor = texture2D(texture, texcoord); + } + """ + + program = shaders.compileProgram( + shaders.compileShader(vertShaderSrc, GL_VERTEX_SHADER), + shaders.compileShader(fragShaderSrc, GL_FRAGMENT_SHADER) + ) + + glUseProgram(program) + + glClearColor(0.5, 0.8, 0.7, 1.0) + + vertPositions = [ + 0.0, 0.0, + 1.0, 0.0, + 1.0, 1.0, + 0.0, 1.0 + ] + + inputAttrib = glGetAttribLocation(program, "aPosition") + glVertexAttribPointer(inputAttrib, 2, GL_FLOAT, GL_FALSE, 0, vertPositions) + glEnableVertexAttribArray(inputAttrib) + + def create_texture(self, stream, fb): + cfg = stream.configuration + fmt = cfg.pixelFormat + fmt = str_to_fourcc(FMT_MAP[fmt]) + w, h = cfg.size + + attribs = [ + EGL_WIDTH, w, + EGL_HEIGHT, h, + EGL_LINUX_DRM_FOURCC_EXT, fmt, + EGL_DMA_BUF_PLANE0_FD_EXT, fb.fd(0), + EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0, + EGL_DMA_BUF_PLANE0_PITCH_EXT, cfg.stride, + EGL_NONE, + ] + + image = eglCreateImageKHR(self.egl.display, + EGL_NO_CONTEXT, + EGL_LINUX_DMA_BUF_EXT, + None, + attribs) + assert(image) + + textures = glGenTextures(1) + glBindTexture(GL_TEXTURE_EXTERNAL_OES, textures) + glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR) + glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_LINEAR) + glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE) + glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE) + glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image) + + return textures + + def resizeEvent(self, event): + size = event.size() + + print("Resize", size) + + super().resizeEvent(event) + + if self.surface is None: + return + + glViewport(0, 0, size.width() // 2, size.height()) + + def paintEvent(self, event): + if self.surface is None: + self.init_gl() + + for ctx_idx, queue in self.reqqueue.items(): + if len(queue) == 0: + continue + + ctx = next(ctx for ctx in self.state["contexts"] if ctx["idx"] == ctx_idx) + + if self.current[ctx_idx]: + old = self.current[ctx_idx] + self.current[ctx_idx] = None + self.state["request_prcessed"](ctx, old) + + next_req = queue.pop(0) + self.current[ctx_idx] = next_req + + stream, fb = next(iter(next_req.buffers.items())) + + self.textures[stream] = self.create_texture(stream, fb) + + self.paint_gl() + + def paint_gl(self): + b = eglMakeCurrent(self.egl.display, self.surface, self.surface, self.egl.context) + assert(b) + + glClear(GL_COLOR_BUFFER_BIT) + + size = self.size() + + for idx, ctx in enumerate(self.state["contexts"]): + for stream in ctx["streams"]: + if self.textures[stream] is None: + continue + + w = size.width() // self.num_columns + h = size.height() // self.num_rows + + x = idx % self.num_columns + y = idx // self.num_columns + + x *= w + y *= h + + glViewport(x, y, w, h) + + glBindTexture(GL_TEXTURE_EXTERNAL_OES, self.textures[stream]) + glDrawArrays(GL_TRIANGLE_FAN, 0, 4) + + b = eglSwapBuffers(self.egl.display, self.surface) + assert(b) + + def handle_request(self, ctx, req): + self.reqqueue[ctx["idx"]].append(req) + self.update() diff --git a/src/py/cam/gl_helpers.py b/src/py/cam/gl_helpers.py new file mode 100644 index 00000000..925901dd --- /dev/null +++ b/src/py/cam/gl_helpers.py @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2021, Tomi Valkeinen + +from OpenGL.EGL.VERSION.EGL_1_0 import EGLNativeDisplayType, eglGetProcAddress, eglQueryString, EGL_EXTENSIONS + +from OpenGL.raw.GLES2 import _types as _cs +from OpenGL.GLES2.VERSION.GLES2_2_0 import * +from OpenGL.GLES3.VERSION.GLES3_3_0 import * +from OpenGL import GL as gl + +from ctypes import c_int, c_char_p, c_void_p, cdll, POINTER, util, \ + pointer, CFUNCTYPE, c_bool + + +def getEGLNativeDisplay(): + _x11lib = cdll.LoadLibrary(util.find_library("X11")) + XOpenDisplay = _x11lib.XOpenDisplay + XOpenDisplay.argtypes = [c_char_p] + XOpenDisplay.restype = POINTER(EGLNativeDisplayType) + + xdpy = XOpenDisplay(None) + + +# Hack. PyOpenGL doesn't seem to manage to find glEGLImageTargetTexture2DOES. +def getglEGLImageTargetTexture2DOES(): + funcptr = eglGetProcAddress("glEGLImageTargetTexture2DOES") + prototype = CFUNCTYPE(None, _cs.GLenum, _cs.GLeglImageOES) + return prototype(funcptr) + + +glEGLImageTargetTexture2DOES = getglEGLImageTargetTexture2DOES() + + +def str_to_fourcc(str): + assert(len(str) == 4) + fourcc = 0 + for i, v in enumerate([ord(c) for c in str]): + fourcc |= v << (i * 8) + return fourcc + + +def get_gl_extensions(): + n = GLint() + glGetIntegerv(GL_NUM_EXTENSIONS, n) + gl_extensions = [] + for i in range(n.value): + gl_extensions.append(gl.glGetStringi(GL_EXTENSIONS, i).decode()) + return gl_extensions + + +def check_gl_extensions(required_extensions): + extensions = get_gl_extensions() + + if False: + print("GL EXTENSIONS: ", " ".join(extensions)) + + for ext in required_extensions: + if ext not in extensions: + raise Exception(ext + " missing") + + +def get_egl_extensions(egl_display): + return eglQueryString(egl_display, EGL_EXTENSIONS).decode().split(" ") + + +def check_egl_extensions(egl_display, required_extensions): + extensions = get_egl_extensions(egl_display) + + if False: + print("EGL EXTENSIONS: ", " ".join(extensions)) + + for ext in required_extensions: + if ext not in extensions: + raise Exception(ext + " missing")