/**
\brief close audio device
\param immed stop playback immediately
*/
static void uninit(struct ao *ao)
{
reset(ao);
DestroyBuffer(ao);
UninitDirectSound(ao);
}
unsigned long GS_StopStream(unsigned long nPort)
{
//恢复渲染,停止线程
PSTREAMCONFIG pm = GetStream(nPort);
if(pm==NULL)
{
return S_FALSE;
}
if(StopStream(pm->pContrlConfig)==S_OK)
{
if(pm->pAudioConfig)
UninitDirectSound(pm->pAudioConfig);
if(pm->pVideoConfig->m_bUsingGDIPLUS)
{
UnInitGDIPlus(pm->pVideoConfig);
}
else
{
UnInitDirectDraw(pm->pVideoConfig);
}
}
char str[128];
sprintf(str," Stop GentekPlatformStream %d\n",nPort);
OutputDebugStringA(str);
return S_OK;
}
/**
\brief close audio device
\param immed stop playback immediately
*/
static void uninit(struct ao *ao, bool immed)
{
if (!immed)
mp_sleep_us(get_delay(ao) * 1000000);
reset(ao);
DestroyBuffer(ao);
UninitDirectSound(ao);
}
/**
\brief setup sound device
\param rate samplerate
\param channels number of channels
\param format format
\param flags unused
\return 0=success -1=fail
*/
static int init(struct ao *ao)
{
struct priv *p = ao->priv;
int res;
if (!InitDirectSound(ao))
return -1;
ao->no_persistent_volume = true;
p->audio_volume = 100;
// ok, now create the buffers
WAVEFORMATEXTENSIBLE wformat;
DSBUFFERDESC dsbpridesc;
DSBUFFERDESC dsbdesc;
int format = af_fmt_from_planar(ao->format);
int rate = ao->samplerate;
if (AF_FORMAT_IS_AC3(format))
format = AF_FORMAT_AC3;
else {
struct mp_chmap_sel sel = {0};
mp_chmap_sel_add_waveext(&sel);
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
return -1;
}
switch (format) {
case AF_FORMAT_AC3:
case AF_FORMAT_S24_LE:
case AF_FORMAT_S16_LE:
case AF_FORMAT_U8:
break;
default:
MP_VERBOSE(ao, "format %s not supported defaulting to Signed 16-bit Little-Endian\n",
af_fmt_to_str(format));
format = AF_FORMAT_S16_LE;
}
//set our audio parameters
ao->samplerate = rate;
ao->format = format;
ao->bps = ao->channels.num * rate * (af_fmt2bits(format) >> 3);
int buffersize = ao->bps; // space for 1 sec
MP_VERBOSE(ao, "Samplerate:%iHz Channels:%i Format:%s\n", rate,
ao->channels.num, af_fmt_to_str(format));
MP_VERBOSE(ao, "Buffersize:%d bytes (%d msec)\n",
buffersize, buffersize / ao->bps * 1000);
//fill waveformatex
ZeroMemory(&wformat, sizeof(WAVEFORMATEXTENSIBLE));
wformat.Format.cbSize = (ao->channels.num > 2)
? sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX) : 0;
wformat.Format.nChannels = ao->channels.num;
wformat.Format.nSamplesPerSec = rate;
if (AF_FORMAT_IS_AC3(format)) {
wformat.Format.wFormatTag = WAVE_FORMAT_DOLBY_AC3_SPDIF;
wformat.Format.wBitsPerSample = 16;
wformat.Format.nBlockAlign = 4;
} else {
wformat.Format.wFormatTag = (ao->channels.num > 2)
? WAVE_FORMAT_EXTENSIBLE : WAVE_FORMAT_PCM;
wformat.Format.wBitsPerSample = af_fmt2bits(format);
wformat.Format.nBlockAlign = wformat.Format.nChannels *
(wformat.Format.wBitsPerSample >> 3);
}
// fill in primary sound buffer descriptor
memset(&dsbpridesc, 0, sizeof(DSBUFFERDESC));
dsbpridesc.dwSize = sizeof(DSBUFFERDESC);
dsbpridesc.dwFlags = DSBCAPS_PRIMARYBUFFER;
dsbpridesc.dwBufferBytes = 0;
dsbpridesc.lpwfxFormat = NULL;
// fill in the secondary sound buffer (=stream buffer) descriptor
memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
dsbdesc.dwSize = sizeof(DSBUFFERDESC);
dsbdesc.dwFlags = DSBCAPS_GETCURRENTPOSITION2 /** Better position accuracy */
| DSBCAPS_GLOBALFOCUS /** Allows background playing */
| DSBCAPS_CTRLVOLUME; /** volume control enabled */
if (ao->channels.num > 2) {
wformat.dwChannelMask = mp_chmap_to_waveext(&ao->channels);
wformat.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
wformat.Samples.wValidBitsPerSample = wformat.Format.wBitsPerSample;
// Needed for 5.1 on emu101k - shit soundblaster
dsbdesc.dwFlags |= DSBCAPS_LOCHARDWARE;
}
wformat.Format.nAvgBytesPerSec = wformat.Format.nSamplesPerSec *
wformat.Format.nBlockAlign;
dsbdesc.dwBufferBytes = buffersize;
dsbdesc.lpwfxFormat = (WAVEFORMATEX *)&wformat;
p->buffer_size = dsbdesc.dwBufferBytes;
p->write_offset = 0;
p->min_free_space = wformat.Format.nBlockAlign;
p->outburst = wformat.Format.nBlockAlign * 512;
// create primary buffer and set its format
res = IDirectSound_CreateSoundBuffer(p->hds, &dsbpridesc, &p->hdspribuf, NULL);
if (res != DS_OK) {
UninitDirectSound(ao);
MP_ERR(ao, "cannot create primary buffer (%s)\n", dserr2str(res));
return -1;
}
res = IDirectSoundBuffer_SetFormat(p->hdspribuf, (WAVEFORMATEX *)&wformat);
if (res != DS_OK) {
MP_WARN(ao, "cannot set primary buffer format (%s), using "
"standard setting (bad quality)", dserr2str(res));
}
MP_VERBOSE(ao, "primary buffer created\n");
// now create the stream buffer
res = IDirectSound_CreateSoundBuffer(p->hds, &dsbdesc, &p->hdsbuf, NULL);
if (res != DS_OK) {
if (dsbdesc.dwFlags & DSBCAPS_LOCHARDWARE) {
// Try without DSBCAPS_LOCHARDWARE
dsbdesc.dwFlags &= ~DSBCAPS_LOCHARDWARE;
res = IDirectSound_CreateSoundBuffer(p->hds, &dsbdesc, &p->hdsbuf, NULL);
}
if (res != DS_OK) {
UninitDirectSound(ao);
MP_ERR(ao, "cannot create secondary (stream)buffer (%s)\n",
dserr2str(res));
return -1;
}
}
MP_VERBOSE(ao, "secondary (stream)buffer created\n");
return 0;
}
