diff options
Diffstat (limited to 'pjmedia/src/pjmedia/symbian_sound.cpp')
| -rw-r--r-- | pjmedia/src/pjmedia/symbian_sound.cpp | 873 |
1 files changed, 873 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia/symbian_sound.cpp b/pjmedia/src/pjmedia/symbian_sound.cpp new file mode 100644 index 00000000..c2db57b5 --- /dev/null +++ b/pjmedia/src/pjmedia/symbian_sound.cpp @@ -0,0 +1,873 @@ +/* $Id$ */ +/* + * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <pjmedia/sound.h> +#include <pjmedia/errno.h> +#include <pj/assert.h> +#include <pj/log.h> +#include <pj/os.h> + + +/* + * This file provides sound implementation for Symbian Audio Streaming + * device. Application using this sound abstraction must link with: + * - mediaclientaudiostream.lib, and + * - mediaclientaudioinputstream.lib + */ +#include <mda/common/audio.h> +#include <MdaAudioOutputStream.h> +#include <MdaAudioInputStream.h> + + + +////////////////////////////////////////////////////////////////////////////// +// + +#define THIS_FILE "symbian_sound.cpp" +#define BYTES_PER_SAMPLE 2 +#define POOL_NAME "SymbianSound" +#define POOL_SIZE 512 +#define POOL_INC 512 + +static pjmedia_snd_dev_info symbian_snd_dev_info = +{ + "Symbian Sound Device", + 1, + 1, + 8000 +}; + +class CPjAudioInputEngine; +class CPjAudioOutputEngine; + +/* + * PJMEDIA Sound Stream instance + */ +struct pjmedia_snd_stream +{ + // Pool + pj_pool_t *pool; + + // Common settings. + unsigned clock_rate; + unsigned channel_count; + unsigned samples_per_frame; + + // Input stream + CPjAudioInputEngine *inEngine; + + // Output stream + CPjAudioOutputEngine *outEngine; +}; + +static pj_pool_factory *snd_pool_factory; + + +/* + * Convert clock rate to Symbian's TMdaAudioDataSettings capability. + */ +static TInt get_clock_rate_cap(unsigned clock_rate) +{ + switch (clock_rate) { + case 8000: return TMdaAudioDataSettings::ESampleRate8000Hz; + case 11025: return TMdaAudioDataSettings::ESampleRate11025Hz; + case 12000: return TMdaAudioDataSettings::ESampleRate12000Hz; + case 16000: return TMdaAudioDataSettings::ESampleRate16000Hz; + case 22050: return TMdaAudioDataSettings::ESampleRate22050Hz; + case 24000: return TMdaAudioDataSettings::ESampleRate24000Hz; + case 32000: return TMdaAudioDataSettings::ESampleRate32000Hz; + case 44100: return TMdaAudioDataSettings::ESampleRate44100Hz; + case 48000: return TMdaAudioDataSettings::ESampleRate48000Hz; + case 64000: return TMdaAudioDataSettings::ESampleRate64000Hz; + case 96000: return TMdaAudioDataSettings::ESampleRate96000Hz; + default: + return 0; + } +} + + +/* + * Convert number of channels into Symbian's TMdaAudioDataSettings capability. + */ +static TInt get_channel_cap(unsigned channel_count) +{ + switch (channel_count) { + case 1: return TMdaAudioDataSettings::EChannelsMono; + case 2: return TMdaAudioDataSettings::EChannelsStereo; + default: + return 0; + } +} + + +////////////////////////////////////////////////////////////////////////////// +// + +/* + * Implementation: Symbian Input Stream. + */ +class CPjAudioInputEngine : public MMdaAudioInputStreamCallback +{ +public: + enum State + { + STATE_INACTIVE, + STATE_ACTIVE, + }; + + ~CPjAudioInputEngine(); + + static CPjAudioInputEngine *NewL(pjmedia_snd_stream *parent_strm, + pjmedia_snd_rec_cb rec_cb, + void *user_data); + + static CPjAudioInputEngine *NewLC(pjmedia_snd_stream *parent_strm, + pjmedia_snd_rec_cb rec_cb, + void *user_data); + + pj_status_t StartRecord(); + void Stop(); + +public: + State state_; + pjmedia_snd_stream *parentStrm_; + pjmedia_snd_rec_cb recCb_; + void *userData_; + CMdaAudioInputStream *iInputStream_; + HBufC8 *iStreamBuffer_; + TPtr8 iFramePtr_; + TInt lastError_; + pj_uint32_t timeStamp_; + + CPjAudioInputEngine(pjmedia_snd_stream *parent_strm, + pjmedia_snd_rec_cb rec_cb, + void *user_data); + void ConstructL(); + +public: + virtual void MaiscOpenComplete(TInt aError); + virtual void MaiscBufferCopied(TInt aError, const TDesC8 &aBuffer); + virtual void MaiscRecordComplete(TInt aError); + +}; + + +CPjAudioInputEngine::CPjAudioInputEngine(pjmedia_snd_stream *parent_strm, + pjmedia_snd_rec_cb rec_cb, + void *user_data) + : state_(STATE_INACTIVE), parentStrm_(parent_strm), recCb_(rec_cb), + iInputStream_(NULL), iStreamBuffer_(NULL), iFramePtr_(NULL, 0), + userData_(user_data), lastError_(KErrNone), timeStamp_(0) +{ +} + +CPjAudioInputEngine::~CPjAudioInputEngine() +{ + Stop(); + delete iStreamBuffer_; +} + +void CPjAudioInputEngine::ConstructL() +{ + iStreamBuffer_ = HBufC8::NewMaxL(parentStrm_->samples_per_frame * + parentStrm_->channel_count * + BYTES_PER_SAMPLE); +} + +CPjAudioInputEngine *CPjAudioInputEngine::NewLC(pjmedia_snd_stream *parent, + pjmedia_snd_rec_cb rec_cb, + void *user_data) +{ + CPjAudioInputEngine* self = new (ELeave) CPjAudioInputEngine(parent, + rec_cb, + user_data); + CleanupStack::PushL(self); + self->ConstructL(); + return self; +} + +CPjAudioInputEngine *CPjAudioInputEngine::NewL(pjmedia_snd_stream *parent, + pjmedia_snd_rec_cb rec_cb, + void *user_data) +{ + CPjAudioInputEngine *self = NewLC(parent, rec_cb, user_data); + CleanupStack::Pop(self); + return self; +} + + +pj_status_t CPjAudioInputEngine::StartRecord() +{ + + // Ignore command if recording is in progress. + if (state_ == STATE_ACTIVE) + return PJ_SUCCESS; + + // According to Nokia's AudioStream example, some 2nd Edition, FP2 devices + // (such as Nokia 6630) require the stream to be reconstructed each time + // before calling Open() - otherwise the callback never gets called. + // For uniform behavior, lets just delete/re-create the stream for all + // devices. + + // Destroy existing stream. + if (iInputStream_) delete iInputStream_; + iInputStream_ = NULL; + + // Create the stream. + TRAPD(err, iInputStream_ = CMdaAudioInputStream::NewL(*this)); + if (err != KErrNone) + return PJ_RETURN_OS_ERROR(err); + + // Initialize settings. + TMdaAudioDataSettings iStreamSettings; + iStreamSettings.iChannels = get_channel_cap(parentStrm_->channel_count); + iStreamSettings.iSampleRate = get_clock_rate_cap(parentStrm_->clock_rate); + + pj_assert(iStreamSettings.iChannels != 0 && + iStreamSettings.iSampleRate != 0); + + // Create timeout timer to wait for Open to complete + RTimer timer; + TRequestStatus reqStatus; + TInt rc; + + rc = timer.CreateLocal(); + if (rc != KErrNone) { + delete iInputStream_; + iInputStream_ = NULL; + return PJ_RETURN_OS_ERROR(rc); + } + + PJ_LOG(4,(THIS_FILE, "Opening sound device for capture, " + "clock rate=%d, channel count=%d..", + parentStrm_->clock_rate, + parentStrm_->channel_count)); + + // Open stream. + lastError_ = KRequestPending; + iInputStream_->Open(&iStreamSettings); + + // Wait until callback is called. + if (lastError_ == KRequestPending) { + timer.After(reqStatus, 5 * 1000 * 1000); + + do { + User::WaitForAnyRequest(); + } while (lastError_==KRequestPending && reqStatus==KRequestPending); + + if (reqStatus==KRequestPending) + timer.Cancel(); + } + + // Close timer + timer.Close(); + + // Handle timeout + if (lastError_ == KRequestPending) { + iInputStream_->Stop(); + delete iInputStream_; + iInputStream_ = NULL; + return PJ_ETIMEDOUT; + } + else if (lastError_ != KErrNone) { + // Handle failure. + delete iInputStream_; + iInputStream_ = NULL; + return PJ_RETURN_OS_ERROR(lastError_); + } + + // Feed the first frame. + iFramePtr_ = iStreamBuffer_->Des(); + iInputStream_->ReadL(iFramePtr_); + + // Success + PJ_LOG(4,(THIS_FILE, "Sound capture started.")); + return PJ_SUCCESS; +} + + +void CPjAudioInputEngine::Stop() +{ + // If capture is in progress, stop it. + if (iInputStream_ && state_ == STATE_ACTIVE) { + lastError_ = KRequestPending; + iInputStream_->Stop(); + + // Wait until it's actually stopped + while (lastError_ == KRequestPending) + pj_thread_sleep(100); + } + + if (iInputStream_) { + delete iInputStream_; + iInputStream_ = NULL; + } + + state_ = STATE_INACTIVE; +} + + +void CPjAudioInputEngine::MaiscOpenComplete(TInt aError) +{ + lastError_ = aError; +} + +void CPjAudioInputEngine::MaiscBufferCopied(TInt aError, + const TDesC8 &aBuffer) +{ + lastError_ = aError; + if (aError != KErrNone) + return; + + // Call the callback. + recCb_(userData_, timeStamp_, (void*)aBuffer.Ptr(), aBuffer.Size()); + + // Increment timestamp. + timeStamp_ += (aBuffer.Size() * BYTES_PER_SAMPLE); + + // Record next frame + iFramePtr_ = iStreamBuffer_->Des(); + iInputStream_->ReadL(iFramePtr_); +} + + +void CPjAudioInputEngine::MaiscRecordComplete(TInt aError) +{ + lastError_ = aError; + state_ = STATE_INACTIVE; +} + + + +////////////////////////////////////////////////////////////////////////////// +// + +/* + * Implementation: Symbian Output Stream. + */ + +class CPjAudioOutputEngine : public MMdaAudioOutputStreamCallback +{ +public: + enum State + { + STATE_INACTIVE, + STATE_ACTIVE, + }; + + ~CPjAudioOutputEngine(); + + static CPjAudioOutputEngine *NewL(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb play_cb, + void *user_data); + + static CPjAudioOutputEngine *NewLC(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb rec_cb, + void *user_data); + + pj_status_t StartPlay(); + void Stop(); + +public: + State state_; + pjmedia_snd_stream *parentStrm_; + pjmedia_snd_play_cb playCb_; + void *userData_; + CMdaAudioOutputStream *iOutputStream_; + TUint8 *frameBuf_; + unsigned frameBufSize_; + TInt lastError_; + unsigned timestamp_; + + CPjAudioOutputEngine(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb play_cb, + void *user_data); + void ConstructL(); + + virtual void MaoscOpenComplete(TInt aError); + virtual void MaoscBufferCopied(TInt aError, const TDesC8& aBuffer); + virtual void MaoscPlayComplete(TInt aError); +}; + + +CPjAudioOutputEngine::CPjAudioOutputEngine(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb play_cb, + void *user_data) +: state_(STATE_INACTIVE), parentStrm_(parent_strm), playCb_(play_cb), + userData_(user_data), iOutputStream_(NULL), frameBuf_(NULL), + lastError_(KErrNone), timestamp_(0) +{ +} + + +void CPjAudioOutputEngine::ConstructL() +{ + frameBufSize_ = parentStrm_->samples_per_frame * + parentStrm_->channel_count * + BYTES_PER_SAMPLE; + frameBuf_ = new TUint8[frameBufSize_]; +} + +CPjAudioOutputEngine::~CPjAudioOutputEngine() +{ + Stop(); + delete [] frameBuf_; +} + +CPjAudioOutputEngine * +CPjAudioOutputEngine::NewLC(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb rec_cb, + void *user_data) +{ + CPjAudioOutputEngine* self = new (ELeave) CPjAudioOutputEngine(parent_strm, + rec_cb, + user_data); + CleanupStack::PushL(self); + self->ConstructL(); + return self; +} + +CPjAudioOutputEngine * +CPjAudioOutputEngine::NewL(pjmedia_snd_stream *parent_strm, + pjmedia_snd_play_cb play_cb, + void *user_data) +{ + CPjAudioOutputEngine *self = NewLC(parent_strm, play_cb, user_data); + CleanupStack::Pop(self); + return self; +} + +pj_status_t CPjAudioOutputEngine::StartPlay() +{ + // Ignore command if playing is in progress. + if (state_ == STATE_ACTIVE) + return PJ_SUCCESS; + + // Destroy existing stream. + if (iOutputStream_) delete iOutputStream_; + iOutputStream_ = NULL; + + // Create the stream + TRAPD(err, iOutputStream_ = CMdaAudioOutputStream::NewL(*this)); + if (err != KErrNone) + return PJ_RETURN_OS_ERROR(err); + + // Initialize settings. + TMdaAudioDataSettings iStreamSettings; + iStreamSettings.iChannels = get_channel_cap(parentStrm_->channel_count); + iStreamSettings.iSampleRate = get_clock_rate_cap(parentStrm_->clock_rate); + + pj_assert(iStreamSettings.iChannels != 0 && + iStreamSettings.iSampleRate != 0); + + PJ_LOG(4,(THIS_FILE, "Opening sound device for playback, " + "clock rate=%d, channel count=%d..", + parentStrm_->clock_rate, + parentStrm_->channel_count)); + + // Open stream. + lastError_ = KRequestPending; + iOutputStream_->Open(&iStreamSettings); + + // Wait until callback is called. + while (lastError_ == KRequestPending) + pj_thread_sleep(100); + + // Handle failure. + if (lastError_ != KErrNone) { + delete iOutputStream_; + iOutputStream_ = NULL; + return PJ_RETURN_OS_ERROR(lastError_); + } + + // Success + PJ_LOG(4,(THIS_FILE, "Sound playback started")); + return PJ_SUCCESS; + +} + +void CPjAudioOutputEngine::Stop() +{ + // Stop stream if it's playing + if (iOutputStream_ && state_ != STATE_INACTIVE) { + lastError_ = KRequestPending; + iOutputStream_->Stop(); + + // Wait until it's actually stopped + while (lastError_ == KRequestPending) + pj_thread_sleep(100); + } + + if (iOutputStream_) { + delete iOutputStream_; + iOutputStream_ = NULL; + } + + state_ = STATE_INACTIVE; +} + +void CPjAudioOutputEngine::MaoscOpenComplete(TInt aError) +{ + lastError_ = aError; + + if (aError==KErrNone) { + // output stream opened succesfully, set status to Active + state_ = STATE_ACTIVE; + + // set stream properties, 16bit 8KHz mono + TMdaAudioDataSettings iSettings; + iSettings.iChannels = get_channel_cap(parentStrm_->channel_count); + iSettings.iSampleRate = get_clock_rate_cap(parentStrm_->clock_rate); + + iOutputStream_->SetAudioPropertiesL(iSettings.iSampleRate, + iSettings.iChannels); + + // set volume to 1/4th of stream max volume + iOutputStream_->SetVolume(iOutputStream_->MaxVolume()/4); + + // set stream priority to normal and time sensitive + iOutputStream_->SetPriority(EPriorityNormal, + EMdaPriorityPreferenceTime); + + // Call callback to retrieve frame from upstream. + pj_status_t status; + status = playCb_(this->userData_, timestamp_, frameBuf_, + frameBufSize_); + if (status != PJ_SUCCESS) { + this->Stop(); + return; + } + + // Increment timestamp. + timestamp_ += (frameBufSize_ / BYTES_PER_SAMPLE); + + // issue WriteL() to write the first audio data block, + // subsequent calls to WriteL() will be issued in + // MMdaAudioOutputStreamCallback::MaoscBufferCopied() + // until whole data buffer is written. + TPtrC8 frame(frameBuf_, frameBufSize_); + iOutputStream_->WriteL(frame); + } +} + +void CPjAudioOutputEngine::MaoscBufferCopied(TInt aError, + const TDesC8& aBuffer) +{ + PJ_UNUSED_ARG(aBuffer); + + if (aError==KErrNone) { + // Buffer successfully written, feed another one. + + // Call callback to retrieve frame from upstream. + pj_status_t status; + status = playCb_(this->userData_, timestamp_, frameBuf_, + frameBufSize_); + if (status != PJ_SUCCESS) { + this->Stop(); + return; + } + + // Increment timestamp. + timestamp_ += (frameBufSize_ / BYTES_PER_SAMPLE); + + // Write to playback stream. + TPtrC8 frame(frameBuf_, frameBufSize_); + iOutputStream_->WriteL(frame); + + } else if (aError==KErrAbort) { + // playing was aborted, due to call to CMdaAudioOutputStream::Stop() + state_ = STATE_INACTIVE; + } else { + // error writing data to output + lastError_ = aError; + state_ = STATE_INACTIVE; + } +} + +void CPjAudioOutputEngine::MaoscPlayComplete(TInt aError) +{ + lastError_ = aError; + state_ = STATE_INACTIVE; +} + + +////////////////////////////////////////////////////////////////////////////// +// + + +/* + * Initialize sound subsystem. + */ +PJ_DEF(pj_status_t) pjmedia_snd_init(pj_pool_factory *factory) +{ + snd_pool_factory = factory; + return PJ_SUCCESS; +} + +/* + * Get device count. + */ +PJ_DEF(int) pjmedia_snd_get_dev_count(void) +{ + /* Always return 1 */ + return 1; +} + +/* + * Get device info. + */ +PJ_DEF(const pjmedia_snd_dev_info*) pjmedia_snd_get_dev_info(unsigned index) +{ + /* Always return the default sound device */ + PJ_ASSERT_RETURN(index==0, NULL); + return &symbian_snd_dev_info; +} + + + +/* + * Open sound recorder stream. + */ +PJ_DEF(pj_status_t) pjmedia_snd_open_rec( int index, + unsigned clock_rate, + unsigned channel_count, + unsigned samples_per_frame, + unsigned bits_per_sample, + pjmedia_snd_rec_cb rec_cb, + void *user_data, + pjmedia_snd_stream **p_snd_strm) +{ + pj_pool_t *pool; + pjmedia_snd_stream *strm; + + PJ_ASSERT_RETURN(index == 0, PJ_EINVAL); + PJ_ASSERT_RETURN(clock_rate && channel_count && samples_per_frame && + bits_per_sample && rec_cb && p_snd_strm, PJ_EINVAL); + + pool = pj_pool_create(snd_pool_factory, POOL_NAME, POOL_SIZE, POOL_INC, + NULL); + if (!pool) + return PJ_ENOMEM; + + strm = (pjmedia_snd_stream*) pj_pool_zalloc(pool, + sizeof(pjmedia_snd_stream)); + strm->pool = pool; + strm->clock_rate = clock_rate; + strm->channel_count = channel_count; + strm->samples_per_frame = samples_per_frame; + + TMdaAudioDataSettings settings; + TInt clockRateCap, channelCountCap; + + clockRateCap = get_clock_rate_cap(clock_rate); + channelCountCap = get_channel_cap(channel_count); + + PJ_ASSERT_RETURN(bits_per_sample == 16, PJ_EINVAL); + PJ_ASSERT_RETURN(clockRateCap != 0, PJ_EINVAL); + PJ_ASSERT_RETURN(channelCountCap != 0, PJ_EINVAL); + + // Create the input stream. + TRAPD(err, strm->inEngine = CPjAudioInputEngine::NewL(strm, rec_cb, + user_data)); + if (err != KErrNone) { + pj_pool_release(pool); + return PJ_RETURN_OS_ERROR(err); + } + + + // Done. + *p_snd_strm = strm; + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pjmedia_snd_open_player( int index, + unsigned clock_rate, + unsigned channel_count, + unsigned samples_per_frame, + unsigned bits_per_sample, + pjmedia_snd_play_cb play_cb, + void *user_data, + pjmedia_snd_stream **p_snd_strm ) +{ + pj_pool_t *pool; + pjmedia_snd_stream *strm; + + PJ_ASSERT_RETURN(index == 0, PJ_EINVAL); + PJ_ASSERT_RETURN(clock_rate && channel_count && samples_per_frame && + bits_per_sample && play_cb && p_snd_strm, PJ_EINVAL); + + pool = pj_pool_create(snd_pool_factory, POOL_NAME, POOL_SIZE, POOL_INC, + NULL); + if (!pool) + return PJ_ENOMEM; + + strm = (pjmedia_snd_stream*) pj_pool_zalloc(pool, + sizeof(pjmedia_snd_stream)); + strm->pool = pool; + strm->clock_rate = clock_rate; + strm->channel_count = channel_count; + strm->samples_per_frame = samples_per_frame; + + TMdaAudioDataSettings settings; + TInt clockRateCap, channelCountCap; + + clockRateCap = get_clock_rate_cap(clock_rate); + channelCountCap = get_channel_cap(channel_count); + + PJ_ASSERT_RETURN(bits_per_sample == 16, PJ_EINVAL); + PJ_ASSERT_RETURN(clockRateCap != 0, PJ_EINVAL); + PJ_ASSERT_RETURN(channelCountCap != 0, PJ_EINVAL); + + // Create the output stream. + TRAPD(err, strm->outEngine = CPjAudioOutputEngine::NewL(strm, play_cb, + user_data)); + if (err != KErrNone) { + pj_pool_release(pool); + return PJ_RETURN_OS_ERROR(err); + } + + // Done. + *p_snd_strm = strm; + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pjmedia_snd_open( int rec_id, + int play_id, + unsigned clock_rate, + unsigned channel_count, + unsigned samples_per_frame, + unsigned bits_per_sample, + pjmedia_snd_rec_cb rec_cb, + pjmedia_snd_play_cb play_cb, + void *user_data, + pjmedia_snd_stream **p_snd_strm) +{ + pj_pool_t *pool; + pjmedia_snd_stream *strm; + + PJ_ASSERT_RETURN(rec_id == 0 && play_id == 0, PJ_EINVAL); + PJ_ASSERT_RETURN(clock_rate && channel_count && samples_per_frame && + bits_per_sample && rec_cb && play_cb && p_snd_strm, + PJ_EINVAL); + + pool = pj_pool_create(snd_pool_factory, POOL_NAME, POOL_SIZE, POOL_INC, + NULL); + if (!pool) + return PJ_ENOMEM; + + strm = (pjmedia_snd_stream*) pj_pool_zalloc(pool, + sizeof(pjmedia_snd_stream)); + strm->pool = pool; + strm->clock_rate = clock_rate; + strm->channel_count = channel_count; + strm->samples_per_frame = samples_per_frame; + + TMdaAudioDataSettings settings; + TInt clockRateCap, channelCountCap; + + clockRateCap = get_clock_rate_cap(clock_rate); + channelCountCap = get_channel_cap(channel_count); + + PJ_ASSERT_RETURN(bits_per_sample == 16, PJ_EINVAL); + PJ_ASSERT_RETURN(clockRateCap != 0, PJ_EINVAL); + PJ_ASSERT_RETURN(channelCountCap != 0, PJ_EINVAL); + + // Create the output stream. + TRAPD(err, strm->outEngine = CPjAudioOutputEngine::NewL(strm, play_cb, + user_data)); + if (err != KErrNone) { + pj_pool_release(pool); + return PJ_RETURN_OS_ERROR(err); + } + + // Done. + *p_snd_strm = strm; + return PJ_SUCCESS; +} + + +PJ_DEF(pj_status_t) pjmedia_snd_stream_start(pjmedia_snd_stream *stream) +{ + pj_status_t status; + + PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL); + + if (stream->inEngine) { + status = stream->inEngine->StartRecord(); + if (status != PJ_SUCCESS) + return status; + } + + if (stream->outEngine) { + status = stream->outEngine->StartPlay(); + if (status != PJ_SUCCESS) + return status; + } + + return PJ_SUCCESS; +} + + +PJ_DEF(pj_status_t) pjmedia_snd_stream_stop(pjmedia_snd_stream *stream) +{ + PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL); + + if (stream->inEngine) { + stream->inEngine->Stop(); + } + + if (stream->outEngine) { + stream->outEngine->Stop(); + } + + return PJ_SUCCESS; +} + + +PJ_DEF(pj_status_t) pjmedia_snd_stream_close(pjmedia_snd_stream *stream) +{ + pj_pool_t *pool; + + PJ_ASSERT_RETURN(stream != NULL, PJ_EINVAL); + + if (stream->inEngine) { + delete stream->inEngine; + stream->inEngine = NULL; + } + + if (stream->outEngine) { + delete stream->outEngine; + stream->outEngine = NULL; + } + + pool = stream->pool; + if (pool) { + stream->pool = NULL; + pj_pool_release(pool); + } + + return PJ_SUCCESS; +} + + +PJ_DEF(pj_status_t) pjmedia_snd_deinit(void) +{ + /* Nothing to do */ + return PJ_SUCCESS; +} + |