protoype.py

# PROTOTYPE CODE
# ANYONE USING THIS WILL BE SHOT

import sys
import time

from ConfigParser import SafeConfigParser

import pygst
pygst.require("0.10")

import gst
"""
SECTION_NAME = "DEFAULT"

class Effect:
    def __init__(self, filename):
        cp = SafeConfigParser()
        cp.read(filename)
        self.name = cp.get(SECTION_NAME, "Name")
        self.author = cp.get(SECTION_NAME, "Author")
        self.pipeline = cp.get(SECTION_NAME, "Pipeline")
        self.colorspace = cp.get(SECTION_NAME, "Colorspace")
        
"""
player = gst.Pipeline("player")

cam = gst.parse_bin_from_description("v4l2src", True)
sink = gst.element_factory_make("autovideosink", "viewer")

player.add(cam, sink)
gst.element_link_many(cam, sink)

player.set_state(gst.STATE_PLAYING)

effects = [cam, sink]

def link_with_colorspace(a, b):
    try:
        a.link(b)
    except gst.LinkError:
        ffmpeg = gst.parse_bin_from_description("ffmpegcolorspace", True)
        a.add(ffmpeg)
        ghostpad = gst.GhostPad("src", ffmpeg.get_pad("src"))
        a.link(ffmpeg)
        ffmpeg.link(b)

def insert_at(bin, pos):
    prev = effects[pos-1]
    next = effects[pos]
    effects.insert( pos, bin)
    prev.unlink(next)
    link_with_colorspace(prev, bin)
    link_with_colorspace(bin, next)

effect = gst.parse_bin_from_description("warptv", True)
player.add(effect)

player.set_state(gst.STATE_PAUSED)
insert_at(effect, 1)
player.set_state(gst.STATE_PLAYING)

if __name__ == "__main__":
    while True:
        raw_input()
    
"""
while True:
    file_name = raw_input("File to load: ")
    effect = Effect(file_name)
    bin_desc = effect.pipeline
    if effects:
        if effect.colorspace != effects[-1].colorspace:
            bin_desc = "ffmpegcolorspace ! " + bin_desc
    else:
        bin_desc = "ffmpegcolorspace ! " + bin_desc + " ! ffmpegcolorspace"
    
    
    bin = gst.parse_bin_from_description(bin_desc, True)
    effect.bin = bin
    
    player.set_state(gst.STATE_PAUSED)
    player.add(bin)
    if effects:
        gst.element_unlink_many(effects[-1].bin, sink)
        gst.element_link_many(effects[-1].bin, effect.bin, sink)
    else:
        gst.element_unlink_many(cam, sink)
        gst.element_link_many(cam, effect.bin, sink)
    player.set_state(gst.STATE_PLAYING)
    effects.append(effect)
    

"""