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Add initial video playback support for Ogg Theora videos (resolves issue #66.)

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The basic APIs are:

video = love.graphics.newVideo("myvideo.ogv")

love.graphics.draw(video, ...) -- Video objects are Drawables.

video:play(), video:pause()

video:getDuration(), video:tell(), video:rewind(), video:seek(seconds)

video:getSource()

video:getWidth(), video:getHeight(), video:setFilter(min, mag)

More advanced APIs include video:setSource(source), video:getStream(), and videostream:setSync.

To use a custom pixel shader when drawing a Video, call the new TexelVideo(texcoords) function instead of Texel(texture, texcoords) in order to get the pixel colors of a video frame.
This commit is contained in:
Bart van Strien
2015-12-08 22:41:19 -04:00
parent a1dab12117
commit 22f2175bec
41 changed files with 2241 additions and 20 deletions
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src/modules/graphics/opengl/wrap_Graphics.lua
+48 -1
View File
@@ -165,6 +165,28 @@ varying mediump vec4 VaryingColor;
uniform sampler2D _tex0_;]],
FUNCTIONS = [[
uniform sampler2D love_VideoYChannel;
uniform sampler2D love_VideoCbChannel;
uniform sampler2D love_VideoCrChannel;
vec4 VideoTexel(vec2 texcoords)
{
vec3 yuv;
yuv[0] = Texel(love_VideoYChannel, texcoords).r;
yuv[1] = Texel(love_VideoCbChannel, texcoords).r;
yuv[2] = Texel(love_VideoCrChannel, texcoords).r;
yuv += vec3(-0.0627451017, -0.501960814, -0.501960814);
vec4 color;
color.r = dot(yuv, vec3(1.164, 0.000, 1.596));
color.g = dot(yuv, vec3(1.164, -0.391, -0.813));
color.b = dot(yuv, vec3(1.164, 2.018, 0.000));
color.a = 1.0;
return gammaCorrectColor(color);
}]],
FOOTER = [[
void main() {
// fix crashing issue in OSX when _tex0_ is unused within effect()
@@ -209,6 +231,7 @@ local function createPixelCode(pixelcode, is_multicanvas, lang)
love.graphics.isGammaCorrect() and "#define LOVE_GAMMA_CORRECT 1" or "",
GLSL.PIXEL.HEADER, GLSL.UNIFORMS,
GLSL.FUNCTIONS,
GLSL.PIXEL.FUNCTIONS,
lang == "glsles" and "#line 1" or "#line 0",
pixelcode,
is_multicanvas and GLSL.PIXEL.FOOTER_MULTI_CANVAS or GLSL.PIXEL.FOOTER,
@@ -309,21 +332,45 @@ vec4 position(mat4 transform_proj, vec4 vertpos) {
pixel = [[
vec4 effect(mediump vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
return Texel(tex, texcoord) * vcolor;
}]]
}]],
videopixel = [[
vec4 effect(mediump vec4 vcolor, Image tex, vec2 texcoord, vec2 pixcoord) {
return VideoTexel(texcoord) * vcolor;
}]],
}
local defaults = {
opengl = {
createVertexCode(defaultcode.vertex, "glsl"),
createPixelCode(defaultcode.pixel, false, "glsl"),
createPixelCode(defaultcode.videopixel, false, "glsl"),
},
opengles = {
createVertexCode(defaultcode.vertex, "glsles"),
createPixelCode(defaultcode.pixel, false, "glsles"),
createPixelCode(defaultcode.videopixel, false, "glsles"),
},
}
love.graphics._setDefaultShaderCode(defaults)
function love.graphics.newVideo(file, loadaudio)
local video = love.graphics._newVideo(file)
local source, success
if loadaudio ~= false then
success, source = pcall(love.audio.newSource, video:getStream():getFilename())
end
if success then
video:setSource(source)
elseif loadaudio == true then
error("Video had no audio track", 2)
else
video:getStream():setSync(love.video.newRemote())
end
return video
end
-- DO NOT REMOVE THE NEXT LINE. It is used to load this file as a C++ string.
--)luastring"--"