static void clear(struct device *dv)
{
struct alsa *alsa = (struct alsa*)dv->local;
pcm_close(&alsa->capture);
pcm_close(&alsa->playback);
free(dv->local);
}
static size_t read_frames(void **frames)
{
unsigned int card = 0;
unsigned int device = 0;
int flags = PCM_IN;
const struct pcm_config config = {
.channels = 2,
.rate = 48000,
.format = PCM_FORMAT_S32_LE,
.period_size = 1024,
.period_count = 2,
.start_threshold = 1024,
.silence_threshold = 1024 * 2,
.stop_threshold = 1024 * 2
};
struct pcm *pcm = pcm_open(card, device, flags, &config);
if (pcm == NULL) {
fprintf(stderr, "failed to allocate memory for PCM\n");
return EXIT_FAILURE;
} else if (!pcm_is_ready(pcm)){
pcm_close(pcm);
fprintf(stderr, "failed to open PCM\n");
return EXIT_FAILURE;
}
unsigned int frame_size = pcm_frames_to_bytes(pcm, 1);
unsigned int frames_per_sec = pcm_get_rate(pcm);
*frames = malloc(frame_size * frames_per_sec);
if (*frames == NULL) {
fprintf(stderr, "failed to allocate frames\n");
pcm_close(pcm);
return EXIT_FAILURE;
}
int read_count = pcm_readi(pcm, *frames, frames_per_sec);
size_t byte_count = pcm_frames_to_bytes(pcm, read_count);
pcm_close(pcm);
return byte_count;
}
static int write_file(const void *frames, size_t size)
{
FILE *output_file = fopen("audio.raw", "wb");
if (output_file == NULL) {
perror("failed to open 'audio.raw' for writing");
return EXIT_FAILURE;
}
fwrite(frames, 1, size, output_file);
fclose(output_file);
return 0;
}
void play_sample(FILE *file, unsigned int device, unsigned int channels,
unsigned int rate, unsigned int bits)
{
struct pcm_config config;
struct pcm *pcm0;
char *buffer;
int size;
int num_read;
/*
channels = 2,period_size = 8092; buffer_size = 8092*4 = 32k
channels = 4, period_size = 4096, buffer_size = 4096*8 = 32k
channels = 4, period_size = 2048, buffer_size = 2048*8 = 16k
channels = 4, period_size = 1024, buffer_size = 1024*8 = 8k
*/
config.channels = 4;
config.rate = rate;
config.period_size = 1024;//4096;//2048
config.period_count = 1;
if (bits == 32)
config.format = PCM_FORMAT_S32_LE;
else if (bits == 16)
config.format = PCM_FORMAT_S16_LE;
config.start_threshold = 0;
config.stop_threshold = 0;
config.silence_threshold = 0;
/*0 is audiocodec, 1 is hdmiaudio, 2 is spdif*/
pcm0 = pcm_open(1, device, PCM_OUT, &config);
if (!pcm0 || !pcm_is_ready(pcm0)) {
fprintf(stderr, "Unable to open PCM device %u (%s)\n", device, pcm_get_error(pcm0));
return;
}
size = pcm_get_buffer_size(pcm0);
buffer = malloc(size);
if (!buffer) {
fprintf(stderr, "Unable to allocate %d bytes\n", size);
free(buffer);
pcm_close(pcm0);
return;
}
size =size;
printf("hx-Playing sample:size:%d, %u ch, %u hz, %u bit\n", size, channels, rate, bits);
do {
num_read = fread(buffer, 1, size, file);
if (num_read > 0) {
if (pcm_write(pcm0, buffer, num_read)) {
fprintf(stderr, "Error playing sample\n");
break;
}
}
} while (num_read > 0);
free(buffer);
pcm_close(pcm0);
}
static int write_frames(const void * frames, size_t byte_count){
unsigned int card = 0;
unsigned int device = 0;
int flags = PCM_OUT;
const struct pcm_config config = {
.channels = 2,
.rate = 48000,
.format = PCM_FORMAT_S32_LE,
.period_size = 1024,
.period_count = 2,
.start_threshold = 1024,
.silence_threshold = 1024 * 2,
.stop_threshold = 1024 * 2
};
struct pcm * pcm = pcm_open(card, device, flags, &config);
if (pcm == NULL) {
fprintf(stderr, "failed to allocate memory for PCM\n");
return -1;
} else if (!pcm_is_ready(pcm)){
pcm_close(pcm);
fprintf(stderr, "failed to open PCM\n");
return -1;
}
unsigned int frame_count = pcm_bytes_to_frames(pcm, byte_count);
int err = pcm_writei(pcm, frames, frame_count);
if (err != 0) {
printf("error: %s\n", pcm_get_error(pcm));
}
pcm_close(pcm);
return 0;
}
int main(void)
{
void *frames;
size_t size;
size = read_file(&frames);
if (size == 0) {
return EXIT_FAILURE;
}
if (write_frames(frames, size) < 0) {
return EXIT_FAILURE;
}
free(frames);
return EXIT_SUCCESS;
}
unsigned int capture_sample(FILE *file, unsigned int card, unsigned int device,
unsigned int channels, unsigned int rate,
enum pcm_format format, unsigned int period_size,
unsigned int period_count)
{
struct pcm_config config;
struct pcm *pcm;
char *buffer;
unsigned int size;
unsigned int bytes_read = 0;
memset(&config, 0, sizeof(config));
config.channels = channels;
config.rate = rate;
config.period_size = period_size;
config.period_count = period_count;
config.format = format;
config.start_threshold = 0;
config.stop_threshold = 0;
config.silence_threshold = 0;
pcm = pcm_open(card, device, PCM_IN, &config);
if (!pcm || !pcm_is_ready(pcm)) {
fprintf(stderr, "Unable to open PCM device (%s)\n",
pcm_get_error(pcm));
return 0;
}
size = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
buffer = malloc(size);
if (!buffer) {
fprintf(stderr, "Unable to allocate %d bytes\n", size);
free(buffer);
pcm_close(pcm);
return 0;
}
printf("Capturing sample: %u ch, %u hz, %u bit\n", channels, rate,
pcm_format_to_bits(format));
while (capturing && !pcm_read(pcm, buffer, size)) {
if (fwrite(buffer, 1, size, file) != size) {
fprintf(stderr,"Error capturing sample\n");
break;
}
bytes_read += size;
}
free(buffer);
pcm_close(pcm);
return pcm_bytes_to_frames(pcm, bytes_read);
}
unsigned int capture_sample(FILE *file, unsigned int device,
unsigned int channels, unsigned int rate,
unsigned int bits)
{
struct pcm_config config;
struct pcm *pcm;
char *buffer;
unsigned int size;
unsigned int bytes_read = 0;
config.channels = channels;
config.rate = rate;
config.period_size = 1024;
config.period_count = 4;
if (bits == 32)
config.format = PCM_FORMAT_S32_LE;
else if (bits == 16)
config.format = PCM_FORMAT_S16_LE;
pcm = pcm_open(0, device, PCM_IN, &config);
if (!pcm || !pcm_is_ready(pcm)) {
fprintf(stderr, "Unable to open PCM device (%s)\n",
pcm_get_error(pcm));
return 0;
}
size = pcm_get_buffer_size(pcm);
buffer = malloc(size);
if (!buffer) {
fprintf(stderr, "Unable to allocate %d bytes\n", size);
free(buffer);
pcm_close(pcm);
return 0;
}
printf("Capturing sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
while (capturing && !pcm_read(pcm, buffer, size)) {
if (fwrite(buffer, 1, size, file) != size) {
fprintf(stderr,"Error capturing sample\n");
break;
}
bytes_read += size;
}
free(buffer);
pcm_close(pcm);
return bytes_read / ((bits / 8) * channels);
}
static gboolean
gst_tinyalsa_sink_unprepare (GstAudioSink * asink)
{
GstTinyalsaSink *sink = GST_TINYALSA_SINK (asink);
if (pcm_stop (sink->pcm) < 0) {
GST_ERROR_OBJECT (sink, "Could not stop device: %s",
pcm_get_error (sink->pcm));
}
/* mutex with getcaps */
GST_OBJECT_LOCK (sink);
if (pcm_close (sink->pcm)) {
GST_ERROR_OBJECT (sink, "Could not close device: %s",
pcm_get_error (sink->pcm));
return FALSE;
}
sink->pcm = NULL;
gst_caps_replace (&sink->cached_caps, NULL);
GST_OBJECT_UNLOCK (sink);
GST_DEBUG_OBJECT (sink, "Device unprepared");
return TRUE;
}
int muroard_driver_free(void) {
if ( muroard_state_member(driver_vp) != NULL ) {
pcm_close(muroard_state_member(driver_vp));
}
return 0;
}
status_t AudioALSACaptureDataProviderBase::openPcmDriver(const unsigned int device)
{
ALOGD("+%s(), pcm device = %d", __FUNCTION__, device);
ASSERT(mPcm == NULL);
mPcm = pcm_open(kAudioSoundCardIndex, device, PCM_IN, &mConfig);
if (mPcm == NULL)
{
ALOGE("%s(), mPcm == NULL!!", __FUNCTION__);
}
else if (pcm_is_ready(mPcm) == false)
{
ALOGE("%s(), pcm_is_ready(%p) == false due to %s, close pcm.", __FUNCTION__, mPcm, pcm_get_error(mPcm));
pcm_close(mPcm);
mPcm = NULL;
}
else
{
pcm_start(mPcm);
}
ALOGD("-%s(), mPcm = %p", __FUNCTION__, mPcm);
ASSERT(mPcm != NULL);
return NO_ERROR;
}
void pcm_set_16bits(int b)
{
int open = wout ? 1 : 0;
pcm_close();
bits = b;
if (open) pcm_init();
}
int proxy_open(alsa_device_proxy * proxy)
{
alsa_device_profile* profile = proxy->profile;
ALOGV("proxy_open(card:%d device:%d %s)", profile->card, profile->device,
profile->direction == PCM_OUT ? "PCM_OUT" : "PCM_IN");
if (profile->card < 0 || profile->device < 0) {
return -EINVAL;
}
proxy->pcm = pcm_open(profile->card, profile->device,
profile->direction | PCM_MONOTONIC, &proxy->alsa_config);
if (proxy->pcm == NULL) {
return -ENOMEM;
}
if (!pcm_is_ready(proxy->pcm)) {
ALOGE(" proxy_open() pcm_open() failed: %s", pcm_get_error(proxy->pcm));
#if defined(LOG_PCM_PARAMS)
log_pcm_config(&proxy->alsa_config, "config");
#endif
pcm_close(proxy->pcm);
proxy->pcm = NULL;
return -ENOMEM;
}
return 0;
}
void pcm_set_samplerate(int rate)
{
int open = wout ? 1 : 0;
pcm_close();
samplerate = rate;
if (open) pcm_init();
}
void pcm_set_buffer_count(int count)
{
int open = wout ? 1 : 0;
pcm_close();
buffers = count;
if (open) pcm_init();
}
void pcm_set_stereo(int stereomode)
{
int open = wout ? 1 : 0;
pcm_close();
stereo = stereomode;
if (open) pcm_init();
}
static int hdmi_out_open_pcm(hdmi_out_t *out)
{
int card = hdmi_out_find_card();
int dev = HDMI_PCM_DEV;
int ret;
TRACEM("out=%p", out);
/* out->up must be 0 (down) */
if (out->up) {
ALOGE("Trying to open a PCM that's already up. "
"This will probably deadlock... so aborting");
return 0;
}
out->pcm = pcm_open(card, dev, PCM_OUT, &out->config);
if(out->pcm && pcm_is_ready(out->pcm)) {
out->up = 1;
ret = 0;
} else {
ALOGE("cannot open HDMI pcm card %d dev %d error: %s",
card, dev, pcm_get_error(out->pcm));
pcm_close(out->pcm);
out->pcm = 0;
out->up = 0;
ret = 1;
}
return ret;
}
void emu_close()
{
vid_close();
pcm_close();
loader_unload();
emu_run = 0;
}
EXTERN_TAG int pcm_output_uninit()
{
if(wfd_pcm)
pcm_close(wfd_pcm);
wfd_pcm = NULL;
adec_print("pcm_output_uninit done \n");
return 0;
}
status_t TinyAudioStreamOut::set(
TinyAudioHardware *hw,
int *pFormat,
uint32_t *pChannels,
uint32_t *pRate)
{
LOGI("TinyAudioStreamOut::set(): asked for rate %dHz, %d channels",
*pRate, *pChannels);
struct pcm_config pcmConfig;
memset(&pcmConfig, 0, sizeof(pcmConfig));
pcmConfig.channels = 2;
pcmConfig.period_size = 2048;
pcmConfig.period_count = 12;
pcmConfig.format = PCM_FORMAT_S16_LE;
// Try 44.1kHz first...
pcmConfig.rate = 44100;
mPcm = pcm_open(0, 0, PCM_OUT, &pcmConfig);
// ...but fall back to 48kHz
if (!mPcm || !::pcm_is_ready(mPcm)) {
pcm_close(mPcm);
pcmConfig.rate = 48000;
mPcm = pcm_open(0, 0, PCM_OUT, &pcmConfig);
}
if (!mPcm || !::pcm_is_ready(mPcm)) {
LOGE("TinyAudioStreamOut::set() failed: %s\n",
::pcm_get_error(mPcm));
pcm_close(mPcm);
return BAD_VALUE;
}
mSampleRate = pcmConfig.rate;
*pRate = pcmConfig.rate;
*pFormat = AudioSystem::PCM_16_BIT;
*pChannels = AudioSystem::CHANNEL_OUT_STEREO;
LOGI("TinyAudioStreamOut::set(): rate %dHz, %d channels",
*pRate, *pChannels);
return NO_ERROR;
}
void AudioPlaybackLocal::releaseHw()
{
if (mPcmHandle != NULL) {
LOGV("releaseHw %x", (unsigned int)this);
doStop();
pcm_close(mPcmHandle);
mPcmHandle = NULL;
}
}
void proxy_close(alsa_device_proxy * proxy)
{
ALOGV("proxy_close() [pcm:%p]", proxy->pcm);
if (proxy->pcm != NULL) {
pcm_close(proxy->pcm);
proxy->pcm = NULL;
}
}
void AudioRecordingLocal::releaseHw()
{
if (mPcmHandle != NULL) {
LOGV("releaseHw %x", (unsigned long)this);
doStop();
pcm_close(mPcmHandle);
mPcmHandle = NULL;
}
}
void TinyAlsaCtlPortConfig::doCloseStream(StreamDirection streamDirection)
{
struct pcm *&streamHandle = _streamHandle[streamDirection];
if (streamHandle) {
pcm_close(streamHandle);
streamHandle = NULL;
}
}
status_t AudioALSALoopbackController::close()
{
ALOGD("+%s()", __FUNCTION__);
AudioAutoTimeoutLock _l(mLock);
AudioAutoTimeoutLock _l2(*AudioALSADriverUtility::getInstance()->getStreamSramDramLock());
mHardwareResourceManager->stopOutputDevice();
pcm_stop(mPcmDL);
pcm_stop(mPcmUL);
pcm_close(mPcmDL);
pcm_close(mPcmUL);
mPcmDL = NULL;
mPcmUL = NULL;
mHardwareResourceManager->stopInputDevice(mHardwareResourceManager->getInputDevice());
ALOGD("-%s()", __FUNCTION__);
return NO_ERROR;
}
void AudioALSAPlaybackHandlerNormal::CloseHpImpeDancePcm(void)
{
ALOGD("CloseHpImpeDancePcm");
// Don't lock Sram/Dram lock here, it would be locked by caller function
if (mHpImpeDancePcm != NULL)
{
pcm_stop(mHpImpeDancePcm);
pcm_close(mHpImpeDancePcm);
mHpImpeDancePcm = NULL;
}
}
static int close_tinyalsa(out123_handle *ao)
{
debug("close_tinyalsa()");
mpg123_tinyalsa_t* ta = (mpg123_tinyalsa_t*)ao->userptr;
if (ta->pcm)
{
pcm_close(ta->pcm);
}
return 0;
}
status_t AudioALSACaptureDataProviderBase::closePcmDriver()
{
ALOGD("+%s(), mPcm = %p", __FUNCTION__, mPcm);
if (mPcm != NULL)
{
pcm_stop(mPcm);
pcm_close(mPcm);
mPcm = NULL;
}
ALOGD("-%s(), mPcm = %p", __FUNCTION__, mPcm);
return NO_ERROR;
}
int hdmi_out_standby(struct audio_stream *stream)
{
hdmi_out_t *out = (hdmi_out_t*)stream;
TRACEM("stream=%p", stream);
if (out->up && out->pcm) {
out->up = 0;
pcm_close(out->pcm);
out->pcm = 0;
}
return 0;
}
void pcm_init()
{
int n;
if(!oss_enabled) {
pcm_close();
return; //NOSOUND
}
/*if (!sound)
{
pcm.hz = 11025;
pcm.len = 4096;
pcm.buf = malloc(pcm.len);
pcm.pos = 0;
dsp = -1;
return;
}*/
//if (!dsp_device) dsp_device = strdup(DSP_DEVICE);
if(dsp<0) dsp = open(dsp_device, O_WRONLY);
if(mixer<0) mixer=open(mixer_device, O_RDWR);
//n = 0x80009;
//ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &n);
//n = AFMT_S8;
n = AFMT_S16_LE;
ioctl(dsp, SNDCTL_DSP_SETFMT, &n);
n = stereo;
//ioctl(dsp, SNDCTL_DSP_STEREO, &n);
pcm.stereo = n;
n++;
ioctl(dsp, SNDCTL_DSP_CHANNELS, &n);
n = samplerate;
ioctl(dsp, SNDCTL_DSP_SPEED, &n);
pcm.hz = (n * 100) / oss_speed; //FIXME TEST speed
pcm.len = n / 60;
pcm.buf = malloc(sizeof(short)*pcm.len);
n = buf_len;
ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &n);
if (pcm.hz) snd.rate = (1<<21) / pcm.hz; //apply soundspeed now!
n = (oss_volume << 8 )| oss_volume;
ioctl(mixer, SOUND_MIXER_WRITE_PCM, &n);
}
int record_file(unsigned rate, unsigned channels, int fd, unsigned count)
{
struct pcm *pcm;
unsigned avail, xfer, bufsize;
char *data, *next;
int r;
pcm = pcm_open(PCM_IN|PCM_MONO);
if (!pcm_ready(pcm)) {
pcm_close(pcm);
goto fail;
}
bufsize = pcm_buffer_size(pcm);
data = malloc(bufsize);
if (!data) {
fprintf(stderr,"could not allocate %d bytes\n", count);
return -1;
}
while (!pcm_read(pcm, data, bufsize)) {
if (write(fd, data, bufsize) != bufsize) {
fprintf(stderr,"could not write %d bytes\n", bufsize);
return -1;
}
}
close(fd);
pcm_close(pcm);
return 0;
fail:
fprintf(stderr,"pcm error: %s\n", pcm_error(pcm));
return -1;
}
static int close_device(struct audio_stream *stream)
{
struct stream_out *out = (struct stream_out *)stream;
struct audio_device *adev = out ? out->dev : NULL;
if(adev == NULL) return -ENOSYS;
/* close the device
* 1. if HD stream close is invoked
* 2. if no HD stream is active.
*/
if((adev->active_pcm) && (adev->hdaudio_active) && (out->flags & AUDIO_OUTPUT_FLAG_DIRECT)) {
ALOGV("%s HD PCM device closed",__func__);
pcm_close(adev->active_pcm);
adev->active_pcm = NULL;
adev->hdaudio_active = false;
} else if((out->pcm) && (!adev->hdaudio_active)) {
ALOGV("%s Default PCM device closed",__func__);
pcm_close(out->pcm);
out->pcm = NULL;
}
return 0;
}