static void updatePort(struct nodeInstanceData *context, VuoInteger newUdpPort)
{
context->udpPort = newUdpPort;
VuoRelease(context->oscManager);
context->oscManager = VuoOscIn_make(newUdpPort);
VuoRetain(context->oscManager);
}
static void updateServer(struct nodeInstanceData *context, VuoText newServerName)
{
VuoRelease(context->serverName);
context->serverName = newServerName;
VuoRetain(context->serverName);
VuoSyphonServer_setName(context->syphonServer, newServerName);
}
static void updateDevice(struct nodeInstanceData *context, VuoAudioOutputDevice newDevice)
{
VuoAudioOutputDevice_release(context->device);
context->device = newDevice;
VuoAudioOutputDevice_retain(context->device);
VuoRelease(context->audioManager);
context->audioManager = VuoAudioOut_getShared(newDevice);
VuoRetain(context->audioManager);
}
static void updateDevice(struct nodeInstanceData *context, VuoMidiDevice newDevice)
{
VuoMidiDevice_release(context->device);
context->device = newDevice;
VuoMidiDevice_retain(context->device);
VuoRelease(context->midiManager);
context->midiManager = VuoMidiIn_make(newDevice);
VuoRetain(context->midiManager);
}
/**
* @ingroup VuoMathExpression
* Encodes the value as a JSON object.
*
* Includes the expression's variables in the JSON object, to be used when generating the Calculate node class.
* However, the variables are ignored by VuoMathExpression_makeFromJson().
*
* @eg{
* {
* "expression" : "y = x + 4",
* "inputVariables" : [ "x" ],
* "outputVariables" : [ "y" ]
* }
* }
*/
json_object * VuoMathExpression_getJson(const VuoMathExpression me)
{
json_object *js = json_object_new_object();
json_object_object_add(js, "expression", VuoText_getJson(me.expression));
if (me.parser)
{
VuoList_VuoText inputVariables = VuoMathExpressionParser_getInputVariables(me.parser);
json_object_object_add(js, "inputVariables", VuoList_VuoText_getJson(inputVariables));
VuoRelease(inputVariables);
VuoList_VuoText outputVariables = VuoMathExpressionParser_getOutputVariables(me.parser);
json_object_object_add(js, "outputVariables", VuoList_VuoText_getJson(outputVariables));
VuoRelease(outputVariables);
}
return js;
}
static void playNextAudioFrame(struct nodeInstanceData *context, VuoOutputTrigger(decodedAudio, VuoList_VuoAudioSamples))
{
if(context->lastAudioSamples)
{
// Send Audio
if(VuoListGetCount_VuoAudioSamples(context->lastAudioSamples) > 0)
{
VuoAudioSamples as = VuoListGetValueAtIndex_VuoAudioSamples(context->lastAudioSamples, 1);
decodedAudio(context->lastAudioSamples);
}
VuoRelease(context->lastAudioSamples);
context->lastAudioSamples = NULL;
}
uint64_t cur_time = dispatch_time(DISPATCH_TIME_NOW, 0);
if(!context->movie) return;
context->lastAudioSamples = VuoListCreate_VuoAudioSamples();
double frameTimestampInSecs = 0;
bool gotFrame = VuoMovie_getNextAudioSample(context->movie, context->lastAudioSamples, &frameTimestampInSecs);
if(gotFrame)
{
VuoRetain(context->lastAudioSamples);
context->lastAudioTimestamp = frameTimestampInSecs;
}
else
{
VLog("bad");
if(context->lastAudioSamples)
VuoRelease(context->lastAudioSamples);
context->lastAudioSamples = NULL;
}
uint64_t presentationTime = (cur_time + NSEC_PER_SEC * AUDIO_SEC_PER_SAMPLE - 100000);
dispatch_source_set_timer(context->audio_timer, presentationTime, DISPATCH_TIME_FOREVER, NSEC_PER_SEC / 100000 );
}
static void setMovie(struct nodeInstanceData *context, const char *movieURL)
{
VuoMovie newMovie = VuoMovie_make(movieURL);
// If VuoMovie_make fails to initialize properly, it cleans up after itself.
// No need to call VuoMovie_free()
if(newMovie == NULL)
return;
VuoRetain(newMovie);
VuoRelease(context->movie);
context->movie = newMovie;
context->duration = VuoMovie_getDuration(context->movie);
}
/**
* @ingroup VuoText
* Creates a new UTF-8 C string from @c value, or, if it's more than 30 Unicode characters long, creates an aposiopesis.
*
* @eg{Hello World!}
* @eg{I would like to convey my gree...}
*/
char * VuoText_summaryFromValue(const VuoText value)
{
if (!value)
return strdup("");
const int maxLength = 30;
if (VuoText_length(value) <= maxLength)
return strdup(value);
VuoText abbreviation = VuoText_substring(value, 1, maxLength);
VuoText ellipsis = VuoText_make("...");
VuoText summaryParts[2] = { abbreviation, ellipsis };
VuoText summaryWhole = VuoText_append(summaryParts, 2);
char *summary = strdup(summaryWhole);
VuoRetain(abbreviation);
VuoRelease(abbreviation);
VuoRetain(ellipsis);
VuoRelease(ellipsis);
VuoRetain(summaryWhole);
VuoRelease(summaryWhole);
return summary;
}
static void pauseAudio(struct nodeInstanceData *context)
{
if( VuoMovie_containsAudio(context->movie) )
{
if(context->audio_timer)
{
dispatch_source_cancel(context->audio_timer);
dispatch_semaphore_wait(context->audio_timerCanceled, DISPATCH_TIME_FOREVER);
dispatch_release(context->audio_timer);
}
context->audio_timer = NULL;
if(context->lastAudioSamples)
{
VuoRelease(context->lastAudioSamples);
context->lastAudioSamples = NULL;
}
}
}
/**
* Receives the data at the specified @c url.
*
* @return true upon success, false upon failure.
* @todo Better error handling per https://b33p.net/kosada/node/4724
*/
bool VuoUrl_fetch(const char *url, void **data, unsigned int *dataLength)
{
struct VuoUrl_curlBuffer buffer = {NULL, 0};
CURL *curl;
CURLcode res;
curl = curl_easy_init();
if (!curl)
{
VLog("Error: cURL initialization failed.");
return false;
}
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1); // Don't use signals for the timeout logic, since they're not thread-safe.
VuoText resolvedUrl = VuoUrl_normalize(url, true);
VuoRetain(resolvedUrl);
curl_easy_setopt(curl, CURLOPT_URL, resolvedUrl);
VuoRelease(resolvedUrl);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, VuoUrl_curlCallback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&buffer);
res = curl_easy_perform(curl);
if(res != CURLE_OK)
{
if (res == CURLE_FILE_COULDNT_READ_FILE)
VLog("Error: Could not read path: \"%s\"", resolvedUrl);
else
VLog("Error: cURL request failed: %s (%d)\n", curl_easy_strerror(res), res);
return false;
}
curl_easy_cleanup(curl);
*data = buffer.memory;
*dataLength = buffer.size;
return true;
}
struct nodeInstanceData * nodeInstanceInit(void)
{
struct nodeInstanceData * instance = (struct nodeInstanceData *)malloc(sizeof(struct nodeInstanceData));
VuoRegister(instance, free);
instance->glContext = VuoGlContext_use();
instance->imageRenderer = VuoImageRenderer_make(instance->glContext);
VuoRetain(instance->imageRenderer);
VuoList_VuoColor colors = VuoListCreate_VuoColor();
VuoRetain(colors);
instance->shader = VuoShader_makeRadialGradientShader(colors, VuoPoint2d_make(0., 0.), 1., 1., 1.);
VuoRetain(instance->shader);
VuoRelease(colors);
return instance;
}
/**
* @ingroup VuoText
* Returns the index (starting at 1) of the last instance of @a substring in @a string.
* Returns 0 if @a substring is not found.
*
* This function will find occurrences that consist of the same Unicode characters as @a substring, but won't find
* occurrences that consist of the same Unicode string decomposed into a different number of Unicode characters.
*/
size_t VuoText_findLastOccurrence(const VuoText string, const VuoText substring)
{
if (! string)
return 0;
size_t foundIndex = 0;
size_t stringLength = VuoText_length(string);
size_t substringLength = VuoText_length(substring);
for (size_t i = 1; i <= stringLength - substringLength + 1; ++i)
{
VuoText currSubstring = VuoText_substring(string, i, substringLength);
if (VuoText_areEqual(substring, currSubstring))
foundIndex = i;
VuoRetain(currSubstring);
VuoRelease(currSubstring);
}
return foundIndex;
}
static void pauseMovie(struct nodeInstanceData *context)
{
if (! context->movie)
return;
if(context->movie_timer)
{
dispatch_source_cancel(context->movie_timer);
dispatch_semaphore_wait(context->movie_timerCanceled, DISPATCH_TIME_FOREVER);
dispatch_release(context->movie_timer);
}
context->movie_timer = NULL;
if(context->lastImage)
{
VuoRelease(context->lastImage);
context->lastImage = NULL;
}
pauseAudio(context);
}
/**
* Finds and returns all the lights in the scene.
*
* If there are multiple ambient lights, returns the weighted (by alpha) average color and summed brightness.
*
* If there are no lights in the scene, returns some default lights.
*/
void VuoSceneObject_findLights(VuoSceneObject so, VuoColor *ambientColor, float *ambientBrightness, VuoList_VuoSceneObject *pointLights, VuoList_VuoSceneObject *spotLights)
{
VuoList_VuoColor ambientColors = VuoListCreate_VuoColor();
VuoRetain(ambientColors);
*ambientBrightness = 0;
*pointLights = VuoListCreate_VuoSceneObject();
*spotLights = VuoListCreate_VuoSceneObject();
float localModelviewMatrix[16];
VuoTransform_getMatrix(VuoTransform_makeIdentity(), localModelviewMatrix);
VuoSceneObject_findLightsRecursive(so, localModelviewMatrix, ambientColors, ambientBrightness, *pointLights, *spotLights);
if (!VuoListGetCount_VuoColor(ambientColors)
&& !VuoListGetCount_VuoSceneObject(*pointLights)
&& !VuoListGetCount_VuoSceneObject(*spotLights))
{
*ambientColor = VuoColor_makeWithRGBA(1,1,1,1);
*ambientBrightness = 0.05;
// https://en.wikipedia.org/wiki/Three-point_lighting
VuoSceneObject keyLight = VuoSceneObject_makePointLight(VuoColor_makeWithRGBA(1,1,1,1), .70, VuoPoint3d_make(-1,1,1), 5, .5);
VuoListAppendValue_VuoSceneObject(*pointLights, keyLight);
VuoSceneObject fillLight = VuoSceneObject_makePointLight(VuoColor_makeWithRGBA(1,1,1,1), .2, VuoPoint3d_make(.5,0,1), 5, 0);
VuoListAppendValue_VuoSceneObject(*pointLights, fillLight);
VuoSceneObject backLight = VuoSceneObject_makePointLight(VuoColor_makeWithRGBA(1,1,1,1), .15, VuoPoint3d_make(1,.75,-.5), 5, 0);
VuoListAppendValue_VuoSceneObject(*pointLights, backLight);
}
else
*ambientColor = VuoColor_average(ambientColors);
VuoRelease(ambientColors);
}