mirror of
https://git.libcamera.org/libcamera/libcamera.git
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74ba01121a
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 <tomi.valkeinen@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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# Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
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from OpenGL.EGL.VERSION.EGL_1_0 import EGLNativeDisplayType, eglGetProcAddress, eglQueryString, EGL_EXTENSIONS
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from OpenGL.raw.GLES2 import _types as _cs
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from OpenGL.GLES2.VERSION.GLES2_2_0 import *
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from OpenGL.GLES3.VERSION.GLES3_3_0 import *
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from OpenGL import GL as gl
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from ctypes import c_int, c_char_p, c_void_p, cdll, POINTER, util, \
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pointer, CFUNCTYPE, c_bool
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def getEGLNativeDisplay():
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_x11lib = cdll.LoadLibrary(util.find_library('X11'))
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XOpenDisplay = _x11lib.XOpenDisplay
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XOpenDisplay.argtypes = [c_char_p]
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XOpenDisplay.restype = POINTER(EGLNativeDisplayType)
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return XOpenDisplay(None)
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# Hack. PyOpenGL doesn't seem to manage to find glEGLImageTargetTexture2DOES.
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def getglEGLImageTargetTexture2DOES():
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funcptr = eglGetProcAddress('glEGLImageTargetTexture2DOES')
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prototype = CFUNCTYPE(None, _cs.GLenum, _cs.GLeglImageOES)
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return prototype(funcptr)
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glEGLImageTargetTexture2DOES = getglEGLImageTargetTexture2DOES()
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# \todo This can be dropped when we have proper PixelFormat bindings
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def str_to_fourcc(str):
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assert(len(str) == 4)
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fourcc = 0
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for i, v in enumerate([ord(c) for c in str]):
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fourcc |= v << (i * 8)
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return fourcc
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def get_gl_extensions():
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n = GLint()
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glGetIntegerv(GL_NUM_EXTENSIONS, n)
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gl_extensions = []
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for i in range(n.value):
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gl_extensions.append(gl.glGetStringi(GL_EXTENSIONS, i).decode())
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return gl_extensions
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def check_gl_extensions(required_extensions):
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extensions = get_gl_extensions()
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if False:
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print('GL EXTENSIONS: ', ' '.join(extensions))
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for ext in required_extensions:
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if ext not in extensions:
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raise Exception(ext + ' missing')
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def get_egl_extensions(egl_display):
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return eglQueryString(egl_display, EGL_EXTENSIONS).decode().split(' ')
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def check_egl_extensions(egl_display, required_extensions):
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extensions = get_egl_extensions(egl_display)
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if False:
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print('EGL EXTENSIONS: ', ' '.join(extensions))
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for ext in required_extensions:
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if ext not in extensions:
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raise Exception(ext + ' missing')
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