/*****************************************************************************
* opensles_android.c : audio output for android native code
*****************************************************************************
- * Copyright © 2011 VideoLAN
+ * Copyright © 2011-2012 VideoLAN
*
* Authors: Dominique Martinet <asmadeus@codewreck.org>
* Hugo Beauzée-Luyssen <beauze.h@gmail.com>
+ * Rafaël Carré <funman@videolanorg>
*
- * 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
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
+ * You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include <vlc_aout.h>
#include <assert.h>
#include <dlfcn.h>
+#include <math.h>
// For native audio
#include <SLES/OpenSLES.h>
#include <SLES/OpenSLES_Android.h>
-// Maximum number of buffers to enqueue.
-#define BUFF_QUEUE 42
+#define OPENSLES_BUFFERS 255 /* maximum number of buffers */
+#define OPENSLES_BUFLEN 10 /* ms */
+/*
+ * 10ms of precision when mesasuring latency should be enough,
+ * with 255 buffers we can buffer 2.55s of audio.
+ */
+
+#define CHECK_OPENSL_ERROR(msg) \
+ if (unlikely(result != SL_RESULT_SUCCESS)) \
+ { \
+ msg_Err(aout, msg" (%lu)", result); \
+ goto error; \
+ }
+
+typedef SLresult (*slCreateEngine_t)(
+ SLObjectItf*, SLuint32, const SLEngineOption*, SLuint32,
+ const SLInterfaceID*, const SLboolean*);
#define Destroy(a) (*a)->Destroy(a);
#define SetPlayState(a, b) (*a)->SetPlayState(a, b)
(*a)->CreateAudioPlayer(a, b, c, d, e, f, g)
#define Enqueue(a, b, c) (*a)->Enqueue(a, b, c)
#define Clear(a) (*a)->Clear(a)
+#define GetState(a, b) (*a)->GetState(a, b)
+#define SetPositionUpdatePeriod(a, b) (*a)->SetPositionUpdatePeriod(a, b)
+#define SetVolumeLevel(a, b) (*a)->SetVolumeLevel(a, b)
+#define SetMute(a, b) (*a)->SetMute(a, b)
/*****************************************************************************
- * aout_sys_t: audio output method descriptor
- *****************************************************************************
- * This structure is part of the audio output thread descriptor.
- * It describes the direct sound specific properties of an audio device.
+ *
*****************************************************************************/
struct aout_sys_t
{
+ /* OpenSL objects */
SLObjectItf engineObject;
SLObjectItf outputMixObject;
SLAndroidSimpleBufferQueueItf playerBufferQueue;
SLObjectItf playerObject;
-
+ SLVolumeItf volumeItf;
+ SLEngineItf engineEngine;
SLPlayItf playerPlay;
- aout_buffer_t *p_buffer_array[BUFF_QUEUE];
- int i_toclean_buffer;
- int i_toappend_buffer;
+ /* OpenSL symbols */
void *p_so_handle;
+
+ slCreateEngine_t slCreateEnginePtr;
+ SLInterfaceID SL_IID_ENGINE;
+ SLInterfaceID SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
+ SLInterfaceID SL_IID_VOLUME;
+ SLInterfaceID SL_IID_PLAY;
+
+ /* */
+
+ vlc_mutex_t lock;
+
+ /* audio buffered through opensles */
+ uint8_t *buf;
+ size_t samples_per_buf;
+ int next_buf;
+
+ int rate;
+
+ /* if we can measure latency already */
+ bool started;
+
+ /* audio not yet buffered through opensles */
+ block_t *p_buffer_chain;
+ block_t **pp_buffer_last;
+ size_t samples;
};
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close ( vlc_object_t * );
+static int Open (vlc_object_t *);
+static void Close (vlc_object_t *);
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin ()
- set_description( N_("OpenSLES audio output") )
- set_shortname( N_("OpenSLES") )
- set_category( CAT_AUDIO )
- set_subcategory( SUBCAT_AUDIO_AOUT )
-
- set_capability( "audio output", 170 )
- add_shortcut( "opensles", "android" )
- set_callbacks( Open, Close )
+ set_description(N_("OpenSLES audio output"))
+ set_shortname(N_("OpenSLES"))
+ set_category(CAT_AUDIO)
+ set_subcategory(SUBCAT_AUDIO_AOUT)
+
+ set_capability("audio output", 170)
+ add_shortcut("opensles", "android")
+ set_callbacks(Open, Close)
vlc_module_end ()
+/*****************************************************************************
+ *
+ *****************************************************************************/
+
+static inline int bytesPerSample(void)
+{
+ return 2 /* S16 */ * 2 /* stereo */;
+}
-static void Clean( aout_sys_t *p_sys )
+static int TimeGet(audio_output_t* aout, mtime_t* restrict drift)
{
- Destroy( p_sys->playerObject );
- Destroy( p_sys->outputMixObject );
- Destroy( p_sys->engineObject );
+ aout_sys_t *sys = aout->sys;
+
+ SLAndroidSimpleBufferQueueState st;
+ SLresult res = GetState(sys->playerBufferQueue, &st);
+ if (unlikely(res != SL_RESULT_SUCCESS)) {
+ msg_Err(aout, "Could not query buffer queue state in TimeGet (%lu)", res);
+ return -1;
+ }
+
+ vlc_mutex_lock(&sys->lock);
+ bool started = sys->started;
+ vlc_mutex_unlock(&sys->lock);
+
+ if (!started)
+ return -1;
+
+ *drift = (CLOCK_FREQ * OPENSLES_BUFLEN * st.count / 1000)
+ + sys->samples * CLOCK_FREQ / sys->rate;
- dlclose( p_sys->p_so_handle );
+ msg_Dbg(aout, "latency %"PRId64" ms, %d/%d buffers", *drift / 1000,
+ (int)st.count, OPENSLES_BUFFERS);
- free( p_sys );
+ return 0;
}
-/*****************************************************************************
- * Play: play a sound
- *****************************************************************************/
-static void Play( audio_output_t *p_aout, block_t *p_buffer )
+static void Flush(audio_output_t *aout, bool drain)
{
- aout_sys_t *p_sys = p_aout->sys;
- int tries = 5;
-
- for (;;)
- {
- SLresult result = Enqueue( p_sys->playerBufferQueue, p_buffer->p_buffer,
- p_buffer->i_buffer );
-
- switch (result)
- {
- case SL_RESULT_SUCCESS:
- p_sys->p_buffer_array[p_sys->i_toappend_buffer] = p_buffer;
- if( ++p_sys->i_toappend_buffer == BUFF_QUEUE )
- p_sys->i_toappend_buffer = 0;
- return;
-
- case SL_RESULT_BUFFER_INSUFFICIENT:
- msg_Err( p_aout, "buffer insufficient");
-
- if (tries--)
- {
- // Wait a bit to retry.
- msleep(CLOCK_FREQ);
- continue;
- }
-
- default:
- msg_Warn( p_aout, "Error %lu, dropping buffer", result );
- aout_BufferFree( p_buffer );
- return;
- }
+ aout_sys_t *sys = aout->sys;
+
+ if (drain) {
+ mtime_t delay;
+ if (!TimeGet(aout, &delay))
+ msleep(delay);
+ } else {
+ vlc_mutex_lock(&sys->lock);
+ SetPlayState(sys->playerPlay, SL_PLAYSTATE_STOPPED);
+ Clear(sys->playerBufferQueue);
+ SetPlayState(sys->playerPlay, SL_PLAYSTATE_PLAYING);
+
+ /* release audio data not yet written to opensles */
+ block_ChainRelease(sys->p_buffer_chain);
+ sys->p_buffer_chain = NULL;
+ sys->pp_buffer_last = &sys->p_buffer_chain;
+
+ sys->samples = 0;
+ sys->started = false;
+
+ vlc_mutex_unlock(&sys->lock);
}
}
-static void PlayedCallback (SLAndroidSimpleBufferQueueItf caller, void *pContext )
+
+static int VolumeSet(audio_output_t *aout, float vol)
{
- aout_sys_t *p_sys = pContext;
+ if (!aout->sys->volumeItf)
+ return -1;
- assert (caller == p_sys->playerBufferQueue);
+ /* Convert UI volume to linear factor (cube) */
+ vol = vol * vol * vol;
- aout_BufferFree( p_sys->p_buffer_array[p_sys->i_toclean_buffer] );
- if( ++p_sys->i_toclean_buffer == BUFF_QUEUE )
- p_sys->i_toclean_buffer = 0;
+ /* millibels from linear amplification */
+ int mb = lroundf(2000.f * log10f(vol));
+ if (mb < SL_MILLIBEL_MIN)
+ mb = SL_MILLIBEL_MIN;
+ else if (mb > 0)
+ mb = 0; /* maximum supported level could be higher: GetMaxVolumeLevel */
+
+ SLresult r = SetVolumeLevel(aout->sys->volumeItf, mb);
+ return (r == SL_RESULT_SUCCESS) ? 0 : -1;
}
-/*****************************************************************************
- * Open: open a dummy audio device
- *****************************************************************************/
-static int Open( vlc_object_t *p_this )
+
+static int MuteSet(audio_output_t *aout, bool mute)
{
- audio_output_t *p_aout = (audio_output_t *)p_this;
- SLresult result;
- SLEngineItf engineEngine;
+ if (!aout->sys->volumeItf)
+ return -1;
- /* Allocate structure */
- p_aout->sys = calloc( 1, sizeof( aout_sys_t ) );
- if( unlikely( p_aout->sys == NULL ) )
- return VLC_ENOMEM;
+ SLresult r = SetMute(aout->sys->volumeItf, mute);
+ return (r == SL_RESULT_SUCCESS) ? 0 : -1;
+}
- aout_sys_t *p_sys = p_aout->sys;
+static void Pause(audio_output_t *aout, bool pause, mtime_t date)
+{
+ (void)date;
+ aout_sys_t *sys = aout->sys;
+ SetPlayState(sys->playerPlay,
+ pause ? SL_PLAYSTATE_PAUSED : SL_PLAYSTATE_PLAYING);
+}
- //Acquiring LibOpenSLES symbols :
- p_sys->p_so_handle = dlopen( "libOpenSLES.so", RTLD_NOW );
- if( p_sys->p_so_handle == NULL )
- {
- msg_Err( p_aout, "Failed to load libOpenSLES" );
- goto error;
+static int WriteBuffer(audio_output_t *aout)
+{
+ aout_sys_t *sys = aout->sys;
+ const size_t unit_size = sys->samples_per_buf * bytesPerSample();
+
+ block_t *b = sys->p_buffer_chain;
+ if (!b)
+ return false;
+
+ /* Check if we can fill at least one buffer unit by chaining blocks */
+ if (b->i_buffer < unit_size) {
+ if (!b->p_next)
+ return false;
+ ssize_t needed = unit_size - b->i_buffer;
+ for (block_t *next = b->p_next; next; next = next->p_next) {
+ needed -= next->i_buffer;
+ if (needed <= 0)
+ break;
+ }
+
+ if (needed > 0)
+ return false;
}
- typedef SLresult (*slCreateEngine_t)(
- SLObjectItf*, SLuint32, const SLEngineOption*, SLuint32,
- const SLInterfaceID*, const SLboolean* );
- slCreateEngine_t slCreateEnginePtr = NULL;
-
- SLInterfaceID *SL_IID_ENGINE;
- SLInterfaceID *SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
- SLInterfaceID *SL_IID_VOLUME;
- SLInterfaceID *SL_IID_PLAY;
-
-#define OPENSL_DLSYM( dest, handle, name ) \
- dest = dlsym( handle, name ); \
- if( dest == NULL ) \
- { \
- msg_Err( p_aout, "Failed to load symbol %s", name ); \
- goto error; \
+ SLAndroidSimpleBufferQueueState st;
+ SLresult res = GetState(sys->playerBufferQueue, &st);
+ if (unlikely(res != SL_RESULT_SUCCESS)) {
+ msg_Err(aout, "Could not query buffer queue state in %s (%lu)", __func__, res);
+ return false;
}
- OPENSL_DLSYM( slCreateEnginePtr, p_sys->p_so_handle, "slCreateEngine" );
- OPENSL_DLSYM( SL_IID_ANDROIDSIMPLEBUFFERQUEUE, p_sys->p_so_handle,
- "SL_IID_ANDROIDSIMPLEBUFFERQUEUE" );
- OPENSL_DLSYM( SL_IID_ENGINE, p_sys->p_so_handle, "SL_IID_ENGINE" );
- OPENSL_DLSYM( SL_IID_PLAY, p_sys->p_so_handle, "SL_IID_PLAY" );
- OPENSL_DLSYM( SL_IID_VOLUME, p_sys->p_so_handle, "SL_IID_VOLUME" );
+ if (st.count == OPENSLES_BUFFERS)
+ return false;
+
+ size_t done = 0;
+ while (done < unit_size) {
+ size_t cur = b->i_buffer;
+ if (cur > unit_size - done)
+ cur = unit_size - done;
+ memcpy(&sys->buf[unit_size * sys->next_buf + done], b->p_buffer, cur);
+ b->i_buffer -= cur;
+ b->p_buffer += cur;
+ done += cur;
-#define CHECK_OPENSL_ERROR( msg ) \
- if( unlikely( result != SL_RESULT_SUCCESS ) ) \
- { \
- msg_Err( p_aout, msg" (%lu)", result ); \
- goto error; \
+ block_t *next = b->p_next;
+ if (b->i_buffer == 0) {
+ block_Release(b);
+ b = NULL;
+ }
+
+ if (done == unit_size)
+ break;
+ else
+ b = next;
}
- // create engine
- result = slCreateEnginePtr( &p_sys->engineObject, 0, NULL, 0, NULL, NULL );
- CHECK_OPENSL_ERROR( "Failed to create engine" );
+ sys->p_buffer_chain = b;
+ if (!b)
+ sys->pp_buffer_last = &sys->p_buffer_chain;
+
+ SLresult r = Enqueue(sys->playerBufferQueue,
+ &sys->buf[unit_size * sys->next_buf], unit_size);
+
+ sys->samples -= sys->samples_per_buf;
+
+ if (r == SL_RESULT_SUCCESS) {
+ if (++sys->next_buf == OPENSLES_BUFFERS)
+ sys->next_buf = 0;
+ return true;
+ } else {
+ /* XXX : if writing fails, we don't retry */
+ msg_Err(aout, "error %lu when writing %d bytes %s",
+ r, b->i_buffer,
+ (r == SL_RESULT_BUFFER_INSUFFICIENT) ? " (buffer insufficient)" : "");
+ return false;
+ }
+}
- // realize the engine in synchronous mode
- result = Realize( p_sys->engineObject, SL_BOOLEAN_FALSE );
- CHECK_OPENSL_ERROR( "Failed to realize engine" );
+/*****************************************************************************
+ * Play: play a sound
+ *****************************************************************************/
+static void Play(audio_output_t *aout, block_t *p_buffer)
+{
+ aout_sys_t *sys = aout->sys;
- // get the engine interface, needed to create other objects
- result = GetInterface( p_sys->engineObject, *SL_IID_ENGINE, &engineEngine );
- CHECK_OPENSL_ERROR( "Failed to get the engine interface" );
+ p_buffer->p_next = NULL; /* Make sur our linked list doesn't use old references */
+ vlc_mutex_lock(&sys->lock);
- // create output mix, with environmental reverb specified as a non-required interface
- const SLInterfaceID ids1[] = { *SL_IID_VOLUME };
- const SLboolean req1[] = { SL_BOOLEAN_FALSE };
- result = CreateOutputMix( engineEngine, &p_sys->outputMixObject, 1, ids1, req1 );
- CHECK_OPENSL_ERROR( "Failed to create output mix" );
+ sys->samples += p_buffer->i_buffer / bytesPerSample();
- // realize the output mix in synchronous mode
- result = Realize( p_sys->outputMixObject, SL_BOOLEAN_FALSE );
- CHECK_OPENSL_ERROR( "Failed to realize output mix" );
+ /* Hold this block until we can write it into the OpenSL buffer */
+ block_ChainLastAppend(&sys->pp_buffer_last, p_buffer);
+
+ /* Fill OpenSL buffer */
+ while (WriteBuffer(aout))
+ ;
+ vlc_mutex_unlock(&sys->lock);
+}
+
+static void PlayedCallback (SLAndroidSimpleBufferQueueItf caller, void *pContext)
+{
+ (void)caller;
+ audio_output_t *aout = pContext;
+ aout_sys_t *sys = aout->sys;
+
+ assert (caller == sys->playerBufferQueue);
+
+ vlc_mutex_lock(&sys->lock);
+ sys->started = true;
+ vlc_mutex_unlock(&sys->lock);
+}
+/*****************************************************************************
+ *
+ *****************************************************************************/
+static int Start(audio_output_t *aout, audio_sample_format_t *restrict fmt)
+{
+ SLresult result;
+
+ aout_sys_t *sys = aout->sys;
// configure audio source - this defines the number of samples you can enqueue.
SLDataLocator_AndroidSimpleBufferQueue loc_bufq = {
SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE,
- BUFF_QUEUE
+ OPENSLES_BUFFERS
};
SLDataFormat_PCM format_pcm;
format_pcm.formatType = SL_DATAFORMAT_PCM;
format_pcm.numChannels = 2;
- format_pcm.samplesPerSec = ((SLuint32) p_aout->format.i_rate * 1000) ;
+ format_pcm.samplesPerSec = ((SLuint32) fmt->i_rate * 1000) ;
format_pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
format_pcm.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
format_pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
// configure audio sink
SLDataLocator_OutputMix loc_outmix = {
SL_DATALOCATOR_OUTPUTMIX,
- p_sys->outputMixObject
+ sys->outputMixObject
};
SLDataSink audioSnk = {&loc_outmix, NULL};
//create audio player
- const SLInterfaceID ids2[] = { *SL_IID_ANDROIDSIMPLEBUFFERQUEUE };
- static const SLboolean req2[] = { SL_BOOLEAN_TRUE };
- result = CreateAudioPlayer( engineEngine, &p_sys->playerObject, &audioSrc,
- &audioSnk, sizeof( ids2 ) / sizeof( *ids2 ),
- ids2, req2 );
- CHECK_OPENSL_ERROR( "Failed to create audio player" );
+ const SLInterfaceID ids2[] = { sys->SL_IID_ANDROIDSIMPLEBUFFERQUEUE, sys->SL_IID_VOLUME };
+ static const SLboolean req2[] = { SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE };
+ result = CreateAudioPlayer(sys->engineEngine, &sys->playerObject, &audioSrc,
+ &audioSnk, sizeof(ids2) / sizeof(*ids2),
+ ids2, req2);
+ if (unlikely(result != SL_RESULT_SUCCESS)) {
+ /* Try again with a more sensible samplerate */
+ fmt->i_rate = 44100;
+ format_pcm.samplesPerSec = ((SLuint32) 44100 * 1000) ;
+ result = CreateAudioPlayer(sys->engineEngine, &sys->playerObject, &audioSrc,
+ &audioSnk, sizeof(ids2) / sizeof(*ids2),
+ ids2, req2);
+ }
+ CHECK_OPENSL_ERROR("Failed to create audio player");
- result = Realize( p_sys->playerObject, SL_BOOLEAN_FALSE );
- CHECK_OPENSL_ERROR( "Failed to realize player object." );
+ result = Realize(sys->playerObject, SL_BOOLEAN_FALSE);
+ CHECK_OPENSL_ERROR("Failed to realize player object.");
- result = GetInterface( p_sys->playerObject, *SL_IID_PLAY, &p_sys->playerPlay );
- CHECK_OPENSL_ERROR( "Failed to get player interface." );
+ result = GetInterface(sys->playerObject, sys->SL_IID_PLAY, &sys->playerPlay);
+ CHECK_OPENSL_ERROR("Failed to get player interface.");
- result = GetInterface( p_sys->playerObject, *SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
- &p_sys->playerBufferQueue );
- CHECK_OPENSL_ERROR( "Failed to get buff queue interface" );
+ result = GetInterface(sys->playerObject, sys->SL_IID_VOLUME, &sys->volumeItf);
+ CHECK_OPENSL_ERROR("failed to get volume interface.");
- result = RegisterCallback( p_sys->playerBufferQueue, PlayedCallback,
- (void*)p_sys);
- CHECK_OPENSL_ERROR( "Failed to register buff queue callback." );
+ result = GetInterface(sys->playerObject, sys->SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
+ &sys->playerBufferQueue);
+ CHECK_OPENSL_ERROR("Failed to get buff queue interface");
+ result = RegisterCallback(sys->playerBufferQueue, PlayedCallback,
+ (void*)aout);
+ CHECK_OPENSL_ERROR("Failed to register buff queue callback.");
// set the player's state to playing
- result = SetPlayState( p_sys->playerPlay, SL_PLAYSTATE_PLAYING );
- CHECK_OPENSL_ERROR( "Failed to switch to playing state" );
+ result = SetPlayState(sys->playerPlay, SL_PLAYSTATE_PLAYING);
+ CHECK_OPENSL_ERROR("Failed to switch to playing state");
+
+ /* XXX: rounding shouldn't affect us at normal sampling rate */
+ sys->rate = fmt->i_rate;
+ sys->samples_per_buf = OPENSLES_BUFLEN * fmt->i_rate / 1000;
+ sys->buf = malloc(OPENSLES_BUFFERS * sys->samples_per_buf * bytesPerSample());
+ if (!sys->buf)
+ goto error;
+
+ sys->started = false;
+ sys->next_buf = 0;
- // we want 16bit signed data little endian.
- p_aout->format.i_format = VLC_CODEC_S16L;
- p_aout->format.i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
- p_aout->pf_play = Play;
- p_aout->pf_pause = NULL;
- p_aout->pf_flush = NULL;
+ sys->p_buffer_chain = NULL;
+ sys->pp_buffer_last = &sys->p_buffer_chain;
+ sys->samples = 0;
- aout_FormatPrepare( &p_aout->format );
+ // we want 16bit signed data native endian.
+ fmt->i_format = VLC_CODEC_S16N;
+ fmt->i_physical_channels = AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT;
+
+ SetPositionUpdatePeriod(sys->playerPlay, AOUT_MIN_PREPARE_TIME * 1000 / CLOCK_FREQ);
+
+ aout_FormatPrepare(fmt);
return VLC_SUCCESS;
+
error:
- Clean( p_sys );
+ if (sys->playerObject) {
+ Destroy(sys->playerObject);
+ sys->playerObject = NULL;
+ }
+
return VLC_EGENERIC;
}
+static void Stop(audio_output_t *aout)
+{
+ aout_sys_t *sys = aout->sys;
+
+ SetPlayState(sys->playerPlay, SL_PLAYSTATE_STOPPED);
+ //Flush remaining buffers if any.
+ Clear(sys->playerBufferQueue);
+
+ free(sys->buf);
+ block_ChainRelease(sys->p_buffer_chain);
+
+ Destroy(sys->playerObject);
+ sys->playerObject = NULL;
+}
+
/*****************************************************************************
- * Close: close our file
+ *
*****************************************************************************/
-static void Close( vlc_object_t *p_this )
+static void Close(vlc_object_t *obj)
{
- audio_output_t *p_aout = (audio_output_t*)p_this;
- aout_sys_t *p_sys = p_aout->sys;
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys = aout->sys;
+
+ Destroy(sys->outputMixObject);
+ Destroy(sys->engineObject);
+ dlclose(sys->p_so_handle);
+ vlc_mutex_destroy(&sys->lock);
+ free(sys);
+}
- SetPlayState( p_sys->playerPlay, SL_PLAYSTATE_STOPPED );
- //Flush remaining buffers if any.
- Clear( p_sys->playerBufferQueue );
- Clean( p_sys );
+static int Open (vlc_object_t *obj)
+{
+ audio_output_t *aout = (audio_output_t *)obj;
+ aout_sys_t *sys;
+ SLresult result;
+
+ aout->sys = sys = calloc(1, sizeof(*sys));
+ if (unlikely(sys == NULL))
+ return VLC_ENOMEM;
+
+ sys->p_so_handle = dlopen("libOpenSLES.so", RTLD_NOW);
+ if (sys->p_so_handle == NULL)
+ {
+ msg_Err(aout, "Failed to load libOpenSLES");
+ goto error;
+ }
+
+ sys->slCreateEnginePtr = dlsym(sys->p_so_handle, "slCreateEngine");
+ if (unlikely(sys->slCreateEnginePtr == NULL))
+ {
+ msg_Err(aout, "Failed to load symbol slCreateEngine");
+ goto error;
+ }
+
+#define OPENSL_DLSYM(dest, name) \
+ do { \
+ const SLInterfaceID *sym = dlsym(sys->p_so_handle, "SL_IID_"name); \
+ if (unlikely(sym == NULL)) \
+ { \
+ msg_Err(aout, "Failed to load symbol SL_IID_"name); \
+ goto error; \
+ } \
+ sys->dest = *sym; \
+ } while(0)
+
+ OPENSL_DLSYM(SL_IID_ANDROIDSIMPLEBUFFERQUEUE, "ANDROIDSIMPLEBUFFERQUEUE");
+ OPENSL_DLSYM(SL_IID_ENGINE, "ENGINE");
+ OPENSL_DLSYM(SL_IID_PLAY, "PLAY");
+ OPENSL_DLSYM(SL_IID_VOLUME, "VOLUME");
+#undef OPENSL_DLSYM
+
+ // create engine
+ result = sys->slCreateEnginePtr(&sys->engineObject, 0, NULL, 0, NULL, NULL);
+ CHECK_OPENSL_ERROR("Failed to create engine");
+
+ // realize the engine in synchronous mode
+ result = Realize(sys->engineObject, SL_BOOLEAN_FALSE);
+ CHECK_OPENSL_ERROR("Failed to realize engine");
+
+ // get the engine interface, needed to create other objects
+ result = GetInterface(sys->engineObject, sys->SL_IID_ENGINE, &sys->engineEngine);
+ CHECK_OPENSL_ERROR("Failed to get the engine interface");
+
+ // create output mix, with environmental reverb specified as a non-required interface
+ const SLInterfaceID ids1[] = { sys->SL_IID_VOLUME };
+ const SLboolean req1[] = { SL_BOOLEAN_FALSE };
+ result = CreateOutputMix(sys->engineEngine, &sys->outputMixObject, 1, ids1, req1);
+ CHECK_OPENSL_ERROR("Failed to create output mix");
+
+ // realize the output mix in synchronous mode
+ result = Realize(sys->outputMixObject, SL_BOOLEAN_FALSE);
+ CHECK_OPENSL_ERROR("Failed to realize output mix");
+
+ vlc_mutex_init(&sys->lock);
+
+ aout->start = Start;
+ aout->stop = Stop;
+ aout->time_get = TimeGet;
+ aout->play = Play;
+ aout->pause = Pause;
+ aout->flush = Flush;
+ aout->mute_set = MuteSet;
+ aout->volume_set = VolumeSet;
+
+ return VLC_SUCCESS;
+
+error:
+ if (sys->outputMixObject)
+ Destroy(sys->outputMixObject);
+ if (sys->engineObject)
+ Destroy(sys->engineObject);
+ if (sys->p_so_handle)
+ dlclose(sys->p_so_handle);
+ free(sys);
+ return VLC_EGENERIC;
}
projects / vlc / blobdiff