JNIEXPORT jint JNICALL
Java_com_sun_media_sound_MixerSourceLine_nSetSampleRate(JNIEnv* e, jobject thisObj, jlong id, jint rate)
{
TRACE1("Java_com_sun_media_sound_MixerSourceLine_nSetSampleRate %lx.\n", id);
VTRACE1("-> stream id: %lx\n", (STREAM_REFERENCE) (INT_PTR) id);
// $$kk: 04.06.99: steve hales says i should be using the UNSIGNED_LONG macros here.
GM_AudioStreamSetRate((STREAM_REFERENCE) (INT_PTR) id, UNSIGNED_LONG_TO_XFIXED(rate));
TRACE1("Java_com_sun_media_sound_MixerSourceLine_nSetSampleRate %lx completed.\n", id);
// $$kk: 04.06.99: steve hales says i should be using the UNSIGNED_LONG macros here.
return (jint)XFIXED_TO_UNSIGNED_LONG(GM_AudioStreamGetRate((STREAM_REFERENCE) (INT_PTR) id));
}
XMPEGEncodeData * XOpenMPEGEncodeStreamFromMemory(GM_Waveform *pAudio,
XMPEGEncodeRate encodeRate,
OPErr *pErr)
{
XMPEGEncodeData *encode;
OPErr theErr;
MPEGEncoderPrivate *pPrivate;
theErr = NO_ERR;
encode = NULL;
if (pAudio && pErr)
{
if ((pAudio->bitSize == 16) && (pAudio->channels <= 2))
{
encode = (XMPEGEncodeData *)XNewPtr((long)sizeof(XMPEGEncodeData));
if (encode)
{
encode->pAudio = pAudio;
encode->encodeRate = encodeRate;
encode->pPrivateData = XNewPtr((long)sizeof(MPEGEncoderPrivate));
if (encode->pPrivateData)
{
pPrivate = MPEG_ENCODE_PRIVATE(encode);
// create new mpeg stream to prepare for encoding. Returns NULL if failed.
pPrivate->encoder = MPG_EncodeNewStream(encodeRate,
XFIXED_TO_UNSIGNED_LONG(pAudio->sampledRate), pAudio->channels,
pAudio->theWaveform, pAudio->waveFrames);
if (pPrivate->encoder)
{
encode->maxFrameBuffers = MPG_EncodeMaxFrames(pPrivate->encoder);
encode->frameBufferSizeInBytes = MPG_EncodeMaxFrameSize(pPrivate->encoder);
encode->frameBufferSize = 0;
encode->currentFrameBuffer = 0;
pPrivate->compressedAudioPosition = 0;
pPrivate->compressedAudioSizeInBytes = encode->maxFrameBuffers * encode->frameBufferSizeInBytes;
pPrivate->pCompressedAudio = XNewPtr(pPrivate->compressedAudioSizeInBytes);
if (pPrivate->pCompressedAudio == NULL)
{
BAE_ASSERT(FALSE);
theErr = MEMORY_ERR;
}
}
else
{
BAE_ASSERT(FALSE);
theErr = PARAM_ERR;
}
}
else
{
BAE_ASSERT(FALSE);
theErr = MEMORY_ERR;
}
if (theErr)
{
XDisposePtr((XPTR)encode);
encode = NULL;
}
}
else
{
BAE_ASSERT(FALSE);
theErr = MEMORY_ERR;
}
}
else
{
BAE_ASSERT(FALSE);
theErr = BAD_SAMPLE;
}
}
else
{
BAE_ASSERT(FALSE);
theErr = PARAM_ERR;
}
if (pErr)
{
*pErr = theErr;
}
return encode;
}
