forked from MoonsideGames/FAudioGMS
streaming sounds triple buffer to avoid micro stutter
parent
c6e3879a67
commit
e17d7e0da8
BIN
gamemaker/extensions/FAudioGMS/FAudioGMS.dll (Stored with Git LFS)
BIN
gamemaker/extensions/FAudioGMS/FAudioGMS.dll (Stored with Git LFS)
Binary file not shown.
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@ -55,8 +55,9 @@
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2,
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2,
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],"resourceVersion":"1.0","name":"FAudioGMS_SetListenerPosition","tags":[],"resourceType":"GMExtensionFunction",},
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{"externalName":"FAudioGMS_StreamingSound_LoadOGG","kind":1,"help":"FAudioGMS_StreamingSound_LoadOGG(filePath)","hidden":false,"returnType":2,"argCount":0,"args":[
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{"externalName":"FAudioGMS_StreamingSound_LoadOGG","kind":1,"help":"FAudioGMS_StreamingSound_LoadOGG(filePath, bufferSizeInBytes)","hidden":false,"returnType":2,"argCount":0,"args":[
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1,
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2,
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],"resourceVersion":"1.0","name":"FAudioGMS_StreamingSound_LoadOGG","tags":[],"resourceType":"GMExtensionFunction",},
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{"externalName":"FAudioGMS_SoundInstance_SetPan","kind":1,"help":"FAudioGMS_SoundInstance_SetPan(soundInstanceID, pan)","hidden":false,"returnType":2,"argCount":0,"args":[
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2,
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167
src/FAudioGMS.c
167
src/FAudioGMS.c
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@ -174,13 +174,19 @@ typedef struct FAudioGMS_StaticSound
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uint32_t lengthInSeconds;
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} FAudioGMS_StaticSound;
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/* if we don't triple buffer, we'll microstutter the voice while waiting for decode */
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#define STREAMING_BUFFER_COUNT 3
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#define DEFAULT_STREAMING_BUFFER_SIZE 32768
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typedef struct FAudioGMS_StreamingSound
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{
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stb_vorbis *fileHandle;
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stb_vorbis_info info;
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float *streamBuffer;
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float *streamBuffer[STREAMING_BUFFER_COUNT];
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uint32_t streamBufferSize;
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uint32_t mostRecentBufferOffset; /* used for calculating track position */
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uint32_t nextStreamBufferIndex; /* it's a ring buffer! */
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uint32_t buffersLoadedCount; /* how many buffers are we buffering? */
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uint32_t mostRecentSampleOffset; /* used for calculating track position */
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uint8_t isFinalBuffer; /* used to detect end of playback */
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} FAudioGMS_StreamingSound;
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@ -321,7 +327,7 @@ static inline FAudioGMS_EffectChain *FAudioGMS_INTERNAL_LookupEffectChain(uint32
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/* Forward declarations to avoid some annoying BS */
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static void FAudioGMS_INTERNAL_SoundInstance_AddBuffer(FAudioGMS_SoundInstance *instance);
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static void FAudioGMS_INTERNAL_SoundInstance_AddBuffers(FAudioGMS_SoundInstance *instance);
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static void FAudioGMS_INTERNAL_SoundInstance_Play(FAudioGMS_SoundInstance *instance);
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static void FAudioGMS_INTERNAL_SoundInstance_Stop(FAudioGMS_SoundInstance *instance);
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static void FAudioGMS_INTERNAL_SoundInstance_Destroy(FAudioGMS_SoundInstance *instance);
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@ -345,13 +351,22 @@ static void FAudioGMS_INTERNAL_OnBufferEndCallback(
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}
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else
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{
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instance->soundData.streamingSound.buffersLoadedCount -= 1;
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instance->soundData.streamingSound.mostRecentSampleOffset +=
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instance->soundData.streamingSound.streamBufferSize /
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(instance->format.nChannels * sizeof(float));
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instance->soundData.streamingSound.mostRecentSampleOffset = SDL_min(
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instance->soundData.streamingSound.mostRecentSampleOffset,
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instance->playLength);
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if (instance->soundData.streamingSound.isFinalBuffer)
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{
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FAudioGMS_INTERNAL_SoundInstance_Stop(instance);
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}
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else
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{
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FAudioGMS_INTERNAL_SoundInstance_AddBuffer(instance);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffers(instance);
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}
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}
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@ -971,71 +986,73 @@ static void FAudioGMS_INTERNAL_Apply3D(FAudioGMS_SoundInstance *instance)
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0);
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}
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static void FAudioGMS_INTERNAL_SoundInstance_AddBuffer(FAudioGMS_SoundInstance *instance)
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static void FAudioGMS_INTERNAL_SoundInstance_AddBuffers(FAudioGMS_SoundInstance *instance)
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{
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uint32_t defaultRequestedSampleCount = instance->format.nSamplesPerSec / 10; /* FIXME: make this configurable */
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uint32_t requestedSampleCount = defaultRequestedSampleCount;
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if (instance->playLength != 0)
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uint32_t i;
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for (i = 0; i < STREAMING_BUFFER_COUNT - instance->soundData.streamingSound.buffersLoadedCount; i += 1)
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{
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uint32_t distanceToEndPoint =
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(instance->playBegin + instance->playLength) -
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stb_vorbis_get_sample_offset(instance->soundData.streamingSound.fileHandle);
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requestedSampleCount = SDL_min(requestedSampleCount, distanceToEndPoint);
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}
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uint32_t defaultRequestedSampleCount = instance->soundData.streamingSound.streamBufferSize /
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(instance->format.nChannels * sizeof(float));
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uint32_t requestedSampleCount = defaultRequestedSampleCount;
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uint32_t requiredStagingBufferSize =
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requestedSampleCount * instance->format.nChannels * sizeof(float);
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if (instance->soundData.streamingSound.streamBufferSize < requiredStagingBufferSize)
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{
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instance->soundData.streamingSound.streamBuffer =
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SDL_realloc(instance->soundData.streamingSound.streamBuffer, requiredStagingBufferSize);
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instance->soundData.streamingSound.streamBufferSize = requiredStagingBufferSize;
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}
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instance->soundData.streamingSound.mostRecentBufferOffset =
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stb_vorbis_get_sample_offset(instance->soundData.streamingSound.fileHandle);
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/* NOTE: this function returns samples per channel, not total samples */
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uint32_t sampleCount = stb_vorbis_get_samples_float_interleaved(
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instance->soundData.streamingSound.fileHandle,
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instance->format.nChannels,
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instance->soundData.streamingSound.streamBuffer,
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requestedSampleCount * instance->format.nChannels);
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FAudioBuffer buffer;
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buffer.AudioBytes = sampleCount * instance->format.nChannels * sizeof(float);
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buffer.pAudioData = (uint8_t *)instance->soundData.streamingSound.streamBuffer;
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buffer.PlayBegin = 0;
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buffer.PlayLength = sampleCount;
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buffer.Flags = 0;
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buffer.LoopBegin = 0;
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buffer.LoopCount = 0;
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buffer.LoopLength = 0;
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buffer.pContext = instance; /* context for OnBufferEnd callback */
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FAudioSourceVoice_SubmitSourceBuffer(instance->voice.handle, &buffer, NULL);
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instance->soundData.streamingSound.isFinalBuffer = 0;
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if (sampleCount < defaultRequestedSampleCount)
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{
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if (instance->loop)
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if (instance->playLength != 0)
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{
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stb_vorbis_seek(instance->soundData.streamingSound.fileHandle, instance->playBegin);
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uint32_t distanceToEndPoint =
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(instance->playBegin + instance->playLength) -
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stb_vorbis_get_sample_offset(instance->soundData.streamingSound.fileHandle);
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requestedSampleCount = SDL_min(requestedSampleCount, distanceToEndPoint);
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}
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else
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/* NOTE: this function returns samples per channel, not total samples */
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uint32_t sampleCount = stb_vorbis_get_samples_float_interleaved(
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instance->soundData.streamingSound.fileHandle,
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instance->format.nChannels,
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instance->soundData.streamingSound
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.streamBuffer[instance->soundData.streamingSound.nextStreamBufferIndex],
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requestedSampleCount * instance->format.nChannels);
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FAudioBuffer buffer;
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buffer.AudioBytes = sampleCount * instance->format.nChannels * sizeof(float);
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buffer.pAudioData =
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(uint8_t *)instance->soundData.streamingSound
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.streamBuffer[instance->soundData.streamingSound.nextStreamBufferIndex];
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buffer.PlayBegin = 0;
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buffer.PlayLength = sampleCount;
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buffer.Flags = 0;
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buffer.LoopBegin = 0;
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buffer.LoopCount = 0;
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buffer.LoopLength = 0;
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buffer.pContext = instance; /* context for OnBufferEnd callback */
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FAudioSourceVoice_SubmitSourceBuffer(instance->voice.handle, &buffer, NULL);
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instance->soundData.streamingSound.isFinalBuffer = 0;
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if (sampleCount < defaultRequestedSampleCount)
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{
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instance->soundData.streamingSound.isFinalBuffer = 1;
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if (instance->loop)
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{
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stb_vorbis_seek(instance->soundData.streamingSound.fileHandle, instance->playBegin);
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}
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else
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{
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instance->soundData.streamingSound.isFinalBuffer = 1;
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}
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}
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instance->soundData.streamingSound.nextStreamBufferIndex =
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(instance->soundData.streamingSound.nextStreamBufferIndex + 1) % STREAMING_BUFFER_COUNT;
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instance->soundData.streamingSound.buffersLoadedCount += 1;
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}
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}
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double FAudioGMS_StreamingSound_LoadOGG(char *filePath)
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double FAudioGMS_StreamingSound_LoadOGG(char *filePath, double bufferSizeInBytes)
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{
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RETURN_ON_NULL_DEVICE(-1.0)
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uint32_t i;
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int error = 0;
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uint32_t bufferSizeInBytesInt = (uint32_t)bufferSizeInBytes;
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stb_vorbis *fileHandle = stb_vorbis_open_filename(filePath, &error, NULL);
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if (error != 0)
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@ -1045,6 +1062,11 @@ double FAudioGMS_StreamingSound_LoadOGG(char *filePath)
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return -1;
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}
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if (bufferSizeInBytesInt == 0)
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{
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bufferSizeInBytesInt = DEFAULT_STREAMING_BUFFER_SIZE; /* A reasonable default! */
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}
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stb_vorbis_info info = stb_vorbis_get_info(fileHandle);
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FAudioGMS_SoundInstance *instance =
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@ -1052,14 +1074,20 @@ double FAudioGMS_StreamingSound_LoadOGG(char *filePath)
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instance->soundData.streamingSound.fileHandle = fileHandle;
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instance->soundData.streamingSound.info = info;
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instance->soundData.streamingSound.streamBuffer = NULL;
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instance->soundData.streamingSound.streamBufferSize = 0;
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instance->soundData.streamingSound.mostRecentBufferOffset = 0;
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for (i = 0; i < STREAMING_BUFFER_COUNT; i += 1)
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{
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instance->soundData.streamingSound.streamBuffer[i] = SDL_malloc(bufferSizeInBytesInt);
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}
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instance->soundData.streamingSound.streamBufferSize = bufferSizeInBytesInt;
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instance->soundData.streamingSound.mostRecentSampleOffset = 0;
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instance->soundData.streamingSound.isFinalBuffer = 0;
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instance->soundData.streamingSound.nextStreamBufferIndex = 0;
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instance->soundData.streamingSound.buffersLoadedCount = 0;
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instance->playLength = stb_vorbis_stream_length_in_samples(fileHandle);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffer(instance);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffers(instance);
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return instance->id;
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}
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@ -1212,10 +1240,12 @@ static void FAudioGMS_INTERNAL_SoundInstance_Stop(FAudioGMS_SoundInstance *insta
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if (!instance->isStatic)
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{
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instance->soundData.streamingSound.buffersLoadedCount = 0;
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stb_vorbis_seek(
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instance->soundData.streamingSound.fileHandle,
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instance->playBegin); /* back to the start */
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FAudioGMS_INTERNAL_SoundInstance_AddBuffer(
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FAudioGMS_INTERNAL_SoundInstance_AddBuffers(
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instance); /* preload so we dont stutter on play */
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}
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}
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@ -1365,8 +1395,9 @@ void FAudioGMS_SoundInstance_SetTrackPositionInSeconds(
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}
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else
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{
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instance->soundData.streamingSound.buffersLoadedCount = 0;
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stb_vorbis_seek(instance->soundData.streamingSound.fileHandle, sampleFrame);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffer(instance);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffers(instance);
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}
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if (currentState == SoundState_Playing)
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@ -1387,7 +1418,7 @@ static uint32_t FAudioGMS_INTERNAL_SoundInstance_GetTrackPositionInSampleFrames(
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}
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else
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{
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return instance->soundData.streamingSound.mostRecentBufferOffset +
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return instance->soundData.streamingSound.mostRecentSampleOffset +
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instance->voice.handle->src.curBufferOffset;
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}
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}
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@ -1436,8 +1467,9 @@ void FAudioGMS_SoundInstance_SetPlayRegion(
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else if (!instance->isStatic)
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{
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FAudioSourceVoice_FlushSourceBuffers(instance->voice.handle);
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instance->soundData.streamingSound.buffersLoadedCount = 0;
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stb_vorbis_seek(instance->soundData.streamingSound.fileHandle, instance->playBegin);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffer(instance);
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FAudioGMS_INTERNAL_SoundInstance_AddBuffers(instance);
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}
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}
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else
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@ -1565,6 +1597,8 @@ void FAudioGMS_SetListenerVelocity(double xVelocity, double yVelocity, double zV
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static void FAudioGMS_INTERNAL_SoundInstance_Destroy(FAudioGMS_SoundInstance *instance)
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{
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uint32_t i;
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if (instance != NULL)
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{
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device->soundInstances[instance->id] = NULL;
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@ -1576,7 +1610,10 @@ static void FAudioGMS_INTERNAL_SoundInstance_Destroy(FAudioGMS_SoundInstance *in
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if (!instance->isStatic)
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{
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SDL_free(instance->soundData.streamingSound.streamBuffer);
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for (i = 0; i < STREAMING_BUFFER_COUNT; i += 1)
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{
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SDL_free(instance->soundData.streamingSound.streamBuffer[i]);
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}
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stb_vorbis_close(instance->soundData.streamingSound.fileHandle);
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}
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if (instance->is3D)
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@ -48,8 +48,10 @@ extern "C"
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double staticSoundID); /* returns a sound instance ID */
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FAUDIOGMSAPI void FAudioGMS_StaticSound_Destroy(double staticSoundID);
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/* returns a sound instance ID */
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FAUDIOGMSAPI double FAudioGMS_StreamingSound_LoadOGG(
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char *filepath); /* returns a sound instance ID */
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char *filepath,
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double bufferSizeInBytes); /* if 0 is passed we will use a sensible default*/
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FAUDIOGMSAPI void FAudioGMS_SoundInstance_Play(double soundInstanceID);
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FAUDIOGMSAPI void FAudioGMS_SoundInstance_Pause(double soundInstanceID);
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