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I'm trying to let Spout receive a webcam capture done with OpenCV but I keep getting errors. How can I approach this problem in the best way?

Error:
C:\Users\User\Desktop\Spout-for-Python-master2\venv\Scripts\python.exe C:/Users/User/Desktop/Spout-for-Python-master2/spout_webcam_sender_example.py pygame 2.1.2 (SDL 2.0.18, Python 3.6.0) Hello from the pygame community. https://www.pygame.org/contribute.html Traceback (most recent call last): File "C:/Users/User/Desktop/Spout-for-Python-master2/spout_webcam_sender_example.py", line 125, in <module> main() File "C:/Users/User/Desktop/Spout-for-Python-master2/spout_webcam_sender_example.py", line 94, in main spoutSender.SendTexture(senderTextureID, GL_TEXTURE_2D, spoutSenderWidth, spoutSenderHeight, False, 0) Boost.Python.ArgumentError: Python argument types in SpoutSender.SendTexture(SpoutSender, numpy.uintc, IntConstant, int, int, bool, int) did not match C++ signature: SendTexture(class SpoutSender {lvalue}, unsigned int, unsigned int, unsigned int, unsigned int, bool, unsigned int) [ WARN:[email protected]] global D:\a\opencv-python\opencv-python\opencv\modules\videoio\src\cap_msmf.cpp (539) `anonymous-namespace'::SourceReaderCB::~SourceReaderCB terminating async callback

Code:

import sys import os sys.path.append('{}/Library/3{}'.format(os.getcwd(), sys.version_info[1])) import argparse import cv2 import SpoutSDK import pygame from pygame.locals import * from OpenGL.GL import * from OpenGL.GLU import * """parsing and configuration""" def parse_args(): desc = "Spout for Python webcam sender example" parser = argparse.ArgumentParser(description=desc) parser.add_argument('--camSize', nargs = 2, type=int, default=[640, 480], help='File path of content image (notation in the paper : x)') parser.add_argument('--camID', type=int, default=1, help='Webcam Device ID)') return parser.parse_args() """main""" def main(): # parse arguments args = parse_args() # window details width = args.camSize[0] height = args.camSize[1] display = (width,height) # window setup pygame.init() pygame.display.set_caption('Webcam') pygame.display.set_mode(display, DOUBLEBUF|OPENGL) pygame.display.gl_set_attribute(pygame.GL_ALPHA_SIZE, 8) # init capture & set size #cap = cv2.VideoCapture(args.camID) cap = cv2.VideoCapture(0) cap.set(3, width) cap.set(4, height) # OpenGL init glMatrixMode(GL_PROJECTION) glOrtho(0,width,height,0,1,-1) glMatrixMode(GL_MODELVIEW) glLoadIdentity() glDisable(GL_DEPTH_TEST) glClearColor(0.0,0.0,0.0,0.0) glEnable(GL_TEXTURE_2D) # init spout sender spoutSender = SpoutSDK.SpoutSender() spoutSenderWidth = width spoutSenderHeight = height # Its signature in c++ looks like this: bool CreateSender(const char *Sendername, unsigned int width, unsigned int height, DWORD dwFormat = 0); spoutSender.CreateSender('Spout for Python Webcam Sender Example', width, height, 0) # create texture id for use with Spout senderTextureID = glGenTextures(1) # initalise our sender texture glBindTexture(GL_TEXTURE_2D, senderTextureID) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST) glBindTexture(GL_TEXTURE_2D, 0) # loop while(True): for event in pygame.event.get(): if event.type == pygame.QUIT: pygame.quit() quit() ret, frame = cap.read() frame = cv2.flip(frame, 1 ) frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) # Copy the frame from the webcam into the sender texture glBindTexture(GL_TEXTURE_2D, senderTextureID) glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, frame ) # Send texture to Spout # Its signature in C++ looks like this: bool SendTexture(GLuint TextureID, GLuint TextureTarget, unsigned int width, unsigned int height, bool bInvert=true, GLuint HostFBO = 0); spoutSender.SendTexture(senderTextureID, GL_TEXTURE_2D, spoutSenderWidth, spoutSenderHeight, False, 0) # Clear screen glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ) # reset the drawing perspective glLoadIdentity() # Draw texture to screen glBegin(GL_QUADS) glTexCoord(0,0) glVertex2f(0,0) glTexCoord(1,0) glVertex2f(width,0) glTexCoord(1,1) glVertex2f(width,height) glTexCoord(0,1) glVertex2f(0,height) glEnd() # update window pygame.display.flip() # unbind our sender texture glBindTexture(GL_TEXTURE_2D, 0) if __name__ == "__main__": main()

Add a print statement on a line before the error occurs and print the type of each variable that is being used as arguments for spoutSender.SendTexture. Then make sure they are all correct since that's what the error seems to be fussing about.

(Jan-12-2022, 07:54 AM)SheeppOSU Wrote: [ -> ]Add a print statement on a line before the error occurs and print the type of each variable that is being used as arguments for spoutSender.SendTexture. Then make sure they are all correct since that's what the error seems to be fussing about.

Thank you i've managed to fix it!

For some reason the variable senderTextureID wasn't giving the right value so I gave it manually one which for me is alright, I'm able to broadcoast my capture through Spout.

spoutSender.SendTexture(2, GL_TEXTURE_2D, spoutSenderWidth, spoutSenderHeight, False, 0)

Instead of:

spoutSender.SendTexture(senderTextureID, GL_TEXTURE_2D, spoutSenderWidth, spoutSenderHeight, False, 0)

I really appreciate your help!