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[EMSCRIPTEN] partially implement raw fb camera mode

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need to add RGBA->XRGB conversion
This commit is contained in:
ToadKing 2013-11-14 21:08:05 -05:00
parent 79a4f790fe
commit 0bb6c4aafc
1 changed files with 31 additions and 2 deletions
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33
emscripten/library_rwebcam.js
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@ -58,7 +58,7 @@ var LibraryRWebCam = {
RWC.contexts[data] = null;
},
RWebCamStart__deps: ['glGenTextures', 'glBindTexture', 'glGetIntegerv', 'glTexParameteri'],
RWebCamStart__deps: ['glGenTextures', 'glBindTexture', 'glGetIntegerv', 'glTexParameteri', 'malloc'],
RWebCamStart: function(data) {
var ret = 0;
if (RWC.contexts[data].glTex) {
@ -79,15 +79,28 @@ var LibraryRWebCam = {
ret = 1;
}
}
if (RWC.contexts[data].rawFb) {
RWC.contexts[data].rawFbCanvas = document.createElement("canvas");
ret = 1;
}
return ret;
},
RWebCamStop__deps: ['glDeleteTextures'],
RWebCamStop__deps: ['glDeleteTextures', 'free'],
RWebCamStop: function(data) {
if (RWC.contexts[data].glTexId) {
_glDeleteTextures(1, RWC.contexts[data].glTexId);
}
if (RWC.contexts[data].rawFbCanvas) {
if (RWC.contexts[data].rawBuffer) {
_free(RWC.contexts[data].rawBuffer);
RWC.contexts[data].rawBuffer = 0;
RWC.contexts[data].rawFbCanvasCtx = null
}
RWC.contexts[data].rawFbCanvas = null;
}
},
RWebCamPoll__deps: ['glBindTexture', 'glGetIntegerv'],
@ -111,6 +124,22 @@ var LibraryRWebCam = {
ret = 1;
}
if (RWC.contexts[data].rawFbCanvas && frame_raw_cb !== 0)
{
if (!RWC.contexts[data].rawFbCanvasCtx) {
RWC.contexts[data].rawFbCanvas.width = RWC.contexts[data].videoElement.videoWidth;
RWC.contexts[data].rawFbCanvas.height = RWC.contexts[data].videoElement.videoHeight;
RWC.contexts[data].rawFbCanvasCtx = RWC.contexts[data].rawFbCanvas.getContext("2d");
RWC.contexts[data].rawBuffer = _malloc(RWC.contexts[data].videoElement.videoWidth * RWC.contexts[data].videoElement.videoHeight * 4);
}
RWC.contexts[data].rawFbCanvasCtx.drawImage(RWC.contexts[data].videoElement, 0, 0, RWC.contexts[data].rawFbCanvas.width, RWC.contexts[data].rawFbCanvas.height);
var image = RWC.contexts[data].rawFbCanvasCtx.getImageData(0, 0, RWC.contexts[data].videoElement.videoWidth, RWC.contexts[data].videoElement.videoHeight);
Module.HEAPU8.set(image.data, RWC.contexts[data].rawBuffer);
Runtime.dynCall('viiii', frame_raw_cb, [RWC.contexts[data].rawBuffer, RWC.contexts[data].videoElement.videoWidth, RWC.contexts[data].videoElement.videoHeight, RWC.contexts[data].videoElement.videoWidth * 4]);
ret = 1;
}
return ret;
}
};