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Merge pull request #5019 from howard-stearns/pitch-shifted-collision-sounds

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Pitch shifted collision sounds
This commit is contained in:
Philip Rosedale 2015-06-02 09:38:13 -07:00
commit faf9120b10
2 changed files with 32 additions and 1 deletions
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6
libraries/entities-renderer/CMakeLists.txt
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@ -17,4 +17,10 @@ find_package(PolyVox REQUIRED)
target_include_directories(${TARGET_NAME} SYSTEM PUBLIC ${POLYVOX_INCLUDE_DIRS})
target_link_libraries(${TARGET_NAME} ${POLYVOX_LIBRARIES})
# for changing the pitch of collision sounds
add_dependency_external_projects(soxr)
find_package(Soxr REQUIRED)
target_link_libraries(${TARGET_NAME} ${SOXR_LIBRARIES})
target_include_directories(${TARGET_NAME} SYSTEM PRIVATE ${SOXR_INCLUDE_DIRS})
link_hifi_libraries(shared gpu script-engine render-utils)

27
libraries/entities-renderer/src/EntityTreeRenderer.cpp
View file

@ -27,6 +27,8 @@
#include <ScriptEngine.h>
#include <TextureCache.h>
#include <SoundCache.h>
#include <soxr.h>
#include <AudioConstants.h>
#include "EntityTreeRenderer.h"
@ -1158,7 +1160,30 @@ void EntityTreeRenderer::playEntityCollisionSound(const QUuid& myNodeID, EntityT
options.stereo = sound->isStereo();
options.position = position;
options.volume = volume;
AudioInjector* injector = new AudioInjector(sound.data(), options);
// Shift the pitch down by ln(1 + (size / COLLISION_SIZE_FOR_STANDARD_PITCH)) / ln(2)
const float COLLISION_SIZE_FOR_STANDARD_PITCH = 0.2f;
QByteArray samples = sound->getByteArray();
soxr_io_spec_t spec = soxr_io_spec(SOXR_INT16_I, SOXR_INT16_I);
soxr_quality_spec_t qualitySpec = soxr_quality_spec(SOXR_MQ, 0);
const int channelCount = sound->isStereo() ? 2 : 1;
const float factor = log(1.0f + (entity->getMaximumAACube().getLargestDimension() / COLLISION_SIZE_FOR_STANDARD_PITCH)) / log(2);
const int standardRate = AudioConstants::SAMPLE_RATE;
const int resampledRate = standardRate * factor;
const int nInputSamples = samples.size() / sizeof(int16_t);
const int nOutputSamples = nInputSamples * factor;
QByteArray resampled(nOutputSamples * sizeof(int16_t), '\0');
const int16_t* receivedSamples = reinterpret_cast<const int16_t*>(samples.data());
soxr_error_t soxError = soxr_oneshot(standardRate, resampledRate, channelCount,
receivedSamples, nInputSamples, NULL,
reinterpret_cast<int16_t*>(resampled.data()), nOutputSamples, NULL,
&spec, &qualitySpec, 0);
if (soxError) {
qCDebug(entitiesrenderer) << "Unable to resample" << collisionSoundURL << "from" << nInputSamples << "@" << standardRate << "to" << nOutputSamples << "@" << resampledRate;
resampled = samples;
}
AudioInjector* injector = new AudioInjector(resampled, options);
injector->setLocalAudioInterface(_localAudioInterface);
injector->triggerDeleteAfterFinish();
QThread* injectorThread = new QThread();