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-rw-r--r--src/jogl/native/audio/Mixer.cpp199
1 files changed, 199 insertions, 0 deletions
diff --git a/src/jogl/native/audio/Mixer.cpp b/src/jogl/native/audio/Mixer.cpp
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+++ b/src/jogl/native/audio/Mixer.cpp
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+#include <windows.h>
+#include <stdlib.h>
+#include <mmsystem.h>
+#include <mmreg.h>
+#include "com_jogamp_audio_windows_waveout_Mixer.h"
+
+static HANDLE event = NULL;
+static HWAVEOUT output = NULL;
+// We use only two buffers to keep latency down
+#define NUM_BUFFERS 2
+//#define NUM_BUFFERS 4
+// This is about 20 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (20 ms / 1000 ms) * (2 bytes / sample) * (2 channels)
+//#define BUFFER_SIZE 3528
+
+// This is about 50 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (50 ms / 1000 ms) * (2 bytes / sample) * (1 channel)
+//#define BUFFER_SIZE 4410
+
+// This is about 200 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (200 ms / 1000 ms) * (2 bytes / sample) * (1 channel)
+//#define BUFFER_SIZE 17640
+
+// This is about 200 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (200 ms / 1000 ms) * (2 bytes / sample) * (2 channel)
+//#define BUFFER_SIZE 35280
+
+// This is about 1000 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (1000 ms / 1000 ms) * (2 bytes / sample) * (1 channel)
+//#define BUFFER_SIZE 88200
+
+// This is about 50 ms of data for WAVE_FORMAT_PCM:
+// (44100 samples / sec) * (50 ms / 1000 ms) * (2 bytes / sample) * (2 channels)
+//#define BUFFER_SIZE 8820
+
+// This is about 50 ms of data for WAVE_FORMAT_IEEE_FLOAT:
+// (44100 samples / sec) * (50 ms / 1000 ms) * (4 bytes / sample) * (2 channels)
+//#define BUFFER_SIZE 17640
+
+// This is about 200 ms of data for WAVE_FORMAT_PCM:
+// (11025 samples / sec) * (200 ms / 1000 ms) * (2 bytes / sample) * (2 channel)
+#define BUFFER_SIZE 8820
+
+//#define BUFFER_SIZE 8192
+static WAVEHDR** buffers = NULL;
+
+void CALLBACK playbackCallback(HWAVEOUT output,
+ UINT msg,
+ DWORD_PTR userData,
+ DWORD_PTR param1,
+ DWORD_PTR param2)
+{
+ if (msg == WOM_DONE) {
+ WAVEHDR* hdr = (WAVEHDR*) param1;
+ hdr->dwFlags |= WHDR_DONE;
+ SetEvent(event);
+ }
+}
+
+JNIEXPORT jboolean JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_initializeWaveOut
+ (JNIEnv *env, jclass unused, jlong eventObject)
+{
+ event = (HANDLE) eventObject;
+
+ // Note the hard requirements on the RawSoundConverter's output format
+ WAVEFORMATEX format;
+ format.wFormatTag = WAVE_FORMAT_PCM;
+ // format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
+ format.nChannels = 2;
+ // format.nChannels = 1;
+ // format.nSamplesPerSec = 44100;
+ format.nSamplesPerSec = 11025;
+ format.wBitsPerSample = 16;
+ // format.wBitsPerSample = 32;
+ format.nBlockAlign = format.nChannels * format.wBitsPerSample / 8;
+ format.nAvgBytesPerSec = format.nBlockAlign * format.nSamplesPerSec;
+ format.cbSize = 0;
+ MMRESULT res = waveOutOpen(&output,
+ WAVE_MAPPER,
+ &format,
+ /* NULL, */ (DWORD_PTR) &playbackCallback,
+ NULL, // No user data right now
+ /* CALLBACK_NULL */ CALLBACK_FUNCTION);
+ if (res != MMSYSERR_NOERROR) {
+ return JNI_FALSE;
+ }
+
+ buffers = (WAVEHDR**) calloc(NUM_BUFFERS, sizeof(WAVEHDR));
+ for (int i = 0; i < NUM_BUFFERS; i++) {
+ char* data = (char*) calloc(BUFFER_SIZE, 1);
+ WAVEHDR* hdr = (WAVEHDR*) calloc(1, sizeof(WAVEHDR));
+ hdr->lpData = data;
+ hdr->dwBufferLength = BUFFER_SIZE;
+ hdr->dwFlags |= WHDR_DONE;
+ buffers[i] = hdr;
+ }
+
+ return JNI_TRUE;
+}
+
+JNIEXPORT void JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_shutdownWaveOut
+ (JNIEnv *env, jclass unused)
+{
+ // writeString("Pausing\n");
+ waveOutPause(output);
+ // writeString("Resetting\n");
+ waveOutReset(output);
+ // writeString("Closing output\n");
+ waveOutClose(output);
+}
+
+JNIEXPORT jlong JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_getNextMixerBuffer
+ (JNIEnv *env, jclass unused)
+{
+ WAVEHDR* hdr = NULL;
+ for (int i = 0; i < NUM_BUFFERS; i++) {
+ if (buffers[i] != NULL && ((buffers[i]->dwFlags & WHDR_DONE) != 0)) {
+ hdr = buffers[i];
+ hdr->dwFlags &= ~WHDR_DONE;
+ break;
+ }
+ }
+ return (jlong) hdr;
+}
+
+JNIEXPORT jobject JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_getMixerBufferData
+ (JNIEnv *env, jclass unused, jlong mixerBuffer)
+{
+ WAVEHDR* hdr = (WAVEHDR*) mixerBuffer;
+ return env->NewDirectByteBuffer(hdr->lpData, hdr->dwBufferLength);
+}
+
+JNIEXPORT jlong JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_getMixerBufferDataAddress
+ (JNIEnv *env, jclass unused, jlong mixerBuffer)
+{
+ WAVEHDR* hdr = (WAVEHDR*) mixerBuffer;
+ return (jlong) hdr->lpData;
+}
+
+JNIEXPORT jint JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_getMixerBufferDataCapacity
+ (JNIEnv *env, jclass unused, jlong mixerBuffer)
+{
+ WAVEHDR* hdr = (WAVEHDR*) mixerBuffer;
+ return (jint) hdr->dwBufferLength;
+}
+
+JNIEXPORT jboolean JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_prepareMixerBuffer
+ (JNIEnv *env, jclass unused, jlong mixerBuffer)
+{
+ MMRESULT res = waveOutPrepareHeader(output,
+ (WAVEHDR*) mixerBuffer,
+ sizeof(WAVEHDR));
+ if (res == MMSYSERR_NOERROR) {
+ return JNI_TRUE;
+ }
+ return JNI_FALSE;
+}
+
+JNIEXPORT jboolean JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_writeMixerBuffer
+ (JNIEnv *env, jclass unused, jlong mixerBuffer)
+{
+ MMRESULT res = waveOutWrite(output,
+ (WAVEHDR*) mixerBuffer,
+ sizeof(WAVEHDR));
+ if (res == MMSYSERR_NOERROR) {
+ waveOutRestart(output);
+
+ return JNI_TRUE;
+ }
+ return JNI_FALSE;
+}
+
+JNIEXPORT jlong JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_CreateEvent
+ (JNIEnv *env, jclass unused)
+{
+ return (jlong) CreateEvent(NULL, FALSE, TRUE, NULL);
+}
+
+JNIEXPORT jboolean JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_WaitForSingleObject
+ (JNIEnv *env, jclass unused, jlong eventObject)
+{
+ DWORD res = WaitForSingleObject((HANDLE) eventObject, INFINITE);
+ if (res == WAIT_OBJECT_0) {
+ return JNI_TRUE;
+ }
+ return JNI_FALSE;
+}
+
+JNIEXPORT void JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_SetEvent
+ (JNIEnv *env, jclass unused, jlong eventObject)
+{
+ SetEvent((HANDLE) eventObject);
+}
+
+JNIEXPORT void JNICALL Java_com_jogamp_audio_windows_waveout_Mixer_CloseHandle
+ (JNIEnv *env, jclass unused, jlong eventObject)
+{
+ CloseHandle((HANDLE) eventObject);
+}