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Add ma_pulsewave generator type
This commit is contained in:
Jay Baird
David Reid
+163
-9
@@ -10104,6 +10104,32 @@ MA_API ma_result ma_waveform_set_frequency(ma_waveform* pWaveform, double freque
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MA_API ma_result ma_waveform_set_type(ma_waveform* pWaveform, ma_waveform_type type);
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MA_API ma_result ma_waveform_set_sample_rate(ma_waveform* pWaveform, ma_uint32 sampleRate);
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typedef struct
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{
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ma_format format;
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ma_uint32 channels;
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ma_uint32 sampleRate;
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double dutyCycle;
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double amplitude;
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double frequency;
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} ma_pulsewave_config;
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MA_API ma_pulsewave_config ma_pulsewave_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double dutyCycle, double amplitude, double frequency);
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typedef struct
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{
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ma_pulsewave_config config;
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ma_waveform waveform;
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} ma_pulsewave;
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MA_API ma_result ma_pulsewave_init(const ma_pulsewave_config* pConfig, ma_pulsewave* pWaveform);
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MA_API void ma_pulsewave_uninit(ma_pulsewave* pWaveform);
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MA_API ma_result ma_pulsewave_read_pcm_frames(ma_pulsewave* pWaveform, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead);
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MA_API ma_result ma_pulsewave_seek_to_pcm_frame(ma_pulsewave* pWaveform, ma_uint64 frameIndex);
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MA_API ma_result ma_pulsewave_set_amplitude(ma_pulsewave* pWaveform, double amplitude);
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MA_API ma_result ma_pulsewave_set_frequency(ma_pulsewave* pWaveform, double frequency);
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MA_API ma_result ma_pulsewave_set_sample_rate(ma_pulsewave* pWaveform, ma_uint32 sampleRate);
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typedef enum
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{
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ma_noise_type_white,
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@@ -65226,12 +65252,12 @@ static ma_int16 ma_waveform_sine_s16(double time, double amplitude)
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return ma_pcm_sample_f32_to_s16(ma_waveform_sine_f32(time, amplitude));
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}
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static float ma_waveform_square_f32(double time, double amplitude)
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static float ma_waveform_square_f32(double time, double dutyCycle, double amplitude)
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{
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double f = time - (ma_int64)time;
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double r;
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if (f < 0.5) {
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if (f < dutyCycle) {
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r = amplitude;
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} else {
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r = -amplitude;
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@@ -65240,9 +65266,9 @@ static float ma_waveform_square_f32(double time, double amplitude)
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return (float)r;
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}
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static ma_int16 ma_waveform_square_s16(double time, double amplitude)
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static ma_int16 ma_waveform_square_s16(double time, double dutyCycle, double amplitude)
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{
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return ma_pcm_sample_f32_to_s16(ma_waveform_square_f32(time, amplitude));
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return ma_pcm_sample_f32_to_s16(ma_waveform_square_f32(time, dutyCycle, amplitude));
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}
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static float ma_waveform_triangle_f32(double time, double amplitude)
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@@ -65317,7 +65343,7 @@ static void ma_waveform_read_pcm_frames__sine(ma_waveform* pWaveform, void* pFra
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}
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}
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static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, void* pFramesOut, ma_uint64 frameCount)
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static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, double dutyCycle, void* pFramesOut, ma_uint64 frameCount)
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{
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ma_uint64 iFrame;
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ma_uint64 iChannel;
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@@ -65330,7 +65356,7 @@ static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, void* pF
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if (pWaveform->config.format == ma_format_f32) {
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float* pFramesOutF32 = (float*)pFramesOut;
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for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
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float s = ma_waveform_square_f32(pWaveform->time, pWaveform->config.amplitude);
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float s = ma_waveform_square_f32(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
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pWaveform->time += pWaveform->advance;
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for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
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@@ -65340,7 +65366,7 @@ static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, void* pF
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} else if (pWaveform->config.format == ma_format_s16) {
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ma_int16* pFramesOutS16 = (ma_int16*)pFramesOut;
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for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
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ma_int16 s = ma_waveform_square_s16(pWaveform->time, pWaveform->config.amplitude);
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ma_int16 s = ma_waveform_square_s16(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
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pWaveform->time += pWaveform->advance;
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for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
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@@ -65349,7 +65375,7 @@ static void ma_waveform_read_pcm_frames__square(ma_waveform* pWaveform, void* pF
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}
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} else {
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for (iFrame = 0; iFrame < frameCount; iFrame += 1) {
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float s = ma_waveform_square_f32(pWaveform->time, pWaveform->config.amplitude);
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float s = ma_waveform_square_f32(pWaveform->time, dutyCycle, pWaveform->config.amplitude);
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pWaveform->time += pWaveform->advance;
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for (iChannel = 0; iChannel < pWaveform->config.channels; iChannel += 1) {
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@@ -65467,7 +65493,7 @@ MA_API ma_result ma_waveform_read_pcm_frames(ma_waveform* pWaveform, void* pFram
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case ma_waveform_type_square:
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{
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ma_waveform_read_pcm_frames__square(pWaveform, pFramesOut, frameCount);
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ma_waveform_read_pcm_frames__square(pWaveform, 0.5, pFramesOut, frameCount);
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} break;
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case ma_waveform_type_triangle:
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@@ -65504,6 +65530,134 @@ MA_API ma_result ma_waveform_seek_to_pcm_frame(ma_waveform* pWaveform, ma_uint64
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return MA_SUCCESS;
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}
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MA_API ma_pulsewave_config ma_pulsewave_config_init(ma_format format, ma_uint32 channels, ma_uint32 sampleRate, double dutyCycle, double amplitude, double frequency)
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{
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ma_pulsewave_config config;
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MA_ZERO_OBJECT(&config);
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config.format = format;
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config.channels = channels;
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config.sampleRate = sampleRate;
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config.dutyCycle = dutyCycle;
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config.amplitude = amplitude;
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config.frequency = frequency;
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return config;
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}
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MA_API ma_result ma_pulsewave_init(const ma_pulsewave_config* pConfig, ma_pulsewave* pWaveform)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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MA_ZERO_OBJECT(pWaveform);
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ma_waveform_config config = ma_waveform_config_init(
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pConfig->format,
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pConfig->channels,
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pConfig->sampleRate,
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ma_waveform_type_square,
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pConfig->amplitude,
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pConfig->frequency
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);
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return ma_waveform_init(&config, &pWaveform->waveform);
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}
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MA_API void ma_pulsewave_uninit(ma_pulsewave* pWaveform)
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{
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if (pWaveform == NULL) {
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return;
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}
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ma_waveform_uninit(&pWaveform->waveform);
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}
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MA_API ma_result ma_pulsewave_read_pcm_frames(ma_pulsewave* pWaveform, void* pFramesOut, ma_uint64 frameCount, ma_uint64* pFramesRead)
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{
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if (pFramesRead != NULL) {
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*pFramesRead = 0;
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}
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if (frameCount == 0) {
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return MA_INVALID_ARGS;
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}
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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if (pFramesOut != NULL) {
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ma_waveform_read_pcm_frames__square(&pWaveform->waveform, pWaveform->config.dutyCycle, pFramesOut, frameCount);
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} else {
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pWaveform->waveform.time += pWaveform->waveform.advance * (ma_int64)frameCount; /* Cast to int64 required for VC6. Won't affect anything in practice. */
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}
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if (pFramesRead != NULL) {
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*pFramesRead = frameCount;
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}
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return MA_SUCCESS;
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}
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MA_API ma_result ma_pulsewave_seek_to_pcm_frame(ma_pulsewave* pWaveform, ma_uint64 frameIndex)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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ma_waveform_seek_to_pcm_frame(&pWaveform->waveform, frameIndex);
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return MA_SUCCESS;
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}
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MA_API ma_result ma_pulsewave_set_amplitude(ma_pulsewave* pWaveform, double amplitude)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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pWaveform->config.amplitude = amplitude;
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ma_waveform_set_amplitude(&pWaveform->waveform, amplitude);
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return MA_SUCCESS;
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}
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MA_API ma_result ma_pulsewave_set_duty_cycle(ma_pulsewave* pWaveform, double dutyCycle)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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pWaveform->config.dutyCycle = dutyCycle;
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return MA_SUCCESS;
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}
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MA_API ma_result ma_pulsewave_set_frequency(ma_pulsewave* pWaveform, double frequency)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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pWaveform->config.frequency = frequency;
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ma_waveform_set_frequency(&pWaveform->waveform, frequency);
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return MA_SUCCESS;
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}
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MA_API ma_result ma_pulsewave_set_sample_rate(ma_pulsewave* pWaveform, ma_uint32 sampleRate)
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{
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if (pWaveform == NULL) {
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return MA_INVALID_ARGS;
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}
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pWaveform->config.sampleRate = sampleRate;
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ma_waveform_set_sample_rate(&pWaveform->waveform, sampleRate);
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return MA_SUCCESS;
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}
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MA_API ma_noise_config ma_noise_config_init(ma_format format, ma_uint32 channels, ma_noise_type type, ma_int32 seed, double amplitude)
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{
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