1 /*****************************************************************************
2 * aout_internal.h : internal defines for audio output
3 *****************************************************************************
4 * Copyright (C) 2002 the VideoLAN team
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 #if defined(__PLUGIN__) || defined(__BUILTIN__) || !defined(__LIBVLC__)
25 # error This header file can only be included from LibVLC.
28 #ifndef __LIBVLC_AOUT_INTERNAL_H
29 # define __LIBVLC_AOUT_INTERNAL_H 1
31 aout_buffer_t *aout_BufferAlloc(aout_alloc_t *allocation, mtime_t microseconds,
32 aout_buffer_t *old_buffer);
36 struct vout_thread_t *(*pf_request_vout)( void *, struct vout_thread_t *,
37 video_format_t *, bool );
39 } aout_request_vout_t;
41 struct filter_owner_sys_t
43 aout_instance_t *p_aout;
44 aout_input_t *p_input;
47 block_t *aout_FilterBufferNew( filter_t *, int );
49 /** an input stream for the audio output */
52 /* When this lock is taken, the pipeline cannot be changed by a
56 audio_sample_format_t input;
57 aout_alloc_t input_alloc;
60 filter_t * pp_filters[AOUT_MAX_FILTERS];
63 filter_t * p_playback_rate_filter;
66 filter_t * pp_resamplers[AOUT_MAX_FILTERS];
68 int i_resampling_type;
69 mtime_t i_resamp_start_date;
70 int i_resamp_start_drift;
72 /* Mixer information */
73 audio_replay_gain_t replay_gain;
75 /* If b_restart == 1, the input pipeline will be re-created. */
78 /* If b_error == 1, there is no input pipeline. */
81 /* Did we just change the output format? (expect buffer inconsistencies) */
84 /* last rate from input */
85 int i_last_input_rate;
96 aout_request_vout_t request_vout;
99 aout_mixer_input_t mixer;
102 /****************************************************************************
104 *****************************************************************************/
107 int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t * );
108 int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input );
109 int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
110 aout_buffer_t * p_buffer, int i_input_rate );
111 void aout_InputCheckAndRestart( aout_instance_t * p_aout, aout_input_t * p_input );
113 /* From filters.c : */
114 int aout_FiltersCreatePipeline ( aout_instance_t * p_aout, filter_t ** pp_filters, int * pi_nb_filters, const audio_sample_format_t * p_input_format, const audio_sample_format_t * p_output_format );
115 void aout_FiltersDestroyPipeline ( aout_instance_t * p_aout, filter_t ** pp_filters, int i_nb_filters );
116 void aout_FiltersPlay ( filter_t ** pp_filters, unsigned i_nb_filters, aout_buffer_t ** pp_input_buffer );
117 void aout_FiltersHintBuffers( aout_instance_t * p_aout, filter_t ** pp_filters, int i_nb_filters, aout_alloc_t * p_first_alloc );
120 int aout_MixerNew( aout_instance_t * p_aout );
121 void aout_MixerDelete( aout_instance_t * p_aout );
122 void aout_MixerRun( aout_instance_t * p_aout );
123 int aout_MixerMultiplierSet( aout_instance_t * p_aout, float f_multiplier );
124 int aout_MixerMultiplierGet( aout_instance_t * p_aout, float * pf_multiplier );
126 /* From output.c : */
127 int aout_OutputNew( aout_instance_t * p_aout,
128 audio_sample_format_t * p_format );
129 void aout_OutputPlay( aout_instance_t * p_aout, aout_buffer_t * p_buffer );
130 void aout_OutputDelete( aout_instance_t * p_aout );
133 /* From common.c : */
134 #define aout_New(a) __aout_New(VLC_OBJECT(a))
135 /* Release with vlc_object_release() */
136 aout_instance_t * __aout_New ( vlc_object_t * );
138 void aout_FifoInit( aout_instance_t *, aout_fifo_t *, uint32_t );
139 mtime_t aout_FifoNextStart( aout_instance_t *, aout_fifo_t * );
140 void aout_FifoPush( aout_instance_t *, aout_fifo_t *, aout_buffer_t * );
141 void aout_FifoSet( aout_instance_t *, aout_fifo_t *, mtime_t );
142 void aout_FifoMoveDates( aout_instance_t *, aout_fifo_t *, mtime_t );
143 void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo );
144 void aout_FormatsPrint( aout_instance_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format1, const audio_sample_format_t * p_format2 );
148 int aout_VolumeSoftGet( aout_instance_t *, audio_volume_t * );
149 int aout_VolumeSoftSet( aout_instance_t *, audio_volume_t );
150 int aout_VolumeSoftInfos( aout_instance_t *, audio_volume_t * );
151 int aout_VolumeNoneGet( aout_instance_t *, audio_volume_t * );
152 int aout_VolumeNoneSet( aout_instance_t *, audio_volume_t );
153 int aout_VolumeNoneInfos( aout_instance_t *, audio_volume_t * );
154 int doVolumeChanges( unsigned action, vlc_object_t * p_object, int i_nb_steps,
155 audio_volume_t i_volume, audio_volume_t * i_return_volume,
159 #define aout_DecNew(a, b, c, d, e) __aout_DecNew(VLC_OBJECT(a), b, c, d, e)
160 aout_input_t * __aout_DecNew( vlc_object_t *, aout_instance_t **,
161 audio_sample_format_t *, const audio_replay_gain_t *,
162 const aout_request_vout_t * );
163 int aout_DecDelete ( aout_instance_t *, aout_input_t * );
164 aout_buffer_t * aout_DecNewBuffer( aout_input_t *, size_t );
165 void aout_DecDeleteBuffer( aout_instance_t *, aout_input_t *, aout_buffer_t * );
166 int aout_DecPlay( aout_instance_t *, aout_input_t *, aout_buffer_t *, int i_input_rate );
167 int aout_DecGetResetLost( aout_instance_t *, aout_input_t * );
168 void aout_DecChangePause( aout_instance_t *, aout_input_t *, bool b_paused, mtime_t i_date );
169 void aout_DecFlush( aout_instance_t *, aout_input_t * );
171 /* Audio output locking */
173 #if !defined (NDEBUG) \
174 && defined __linux__ && (defined (__i386__) || defined (__x86_64__))
175 # define AOUT_DEBUG 1
188 void aout_lock (unsigned);
189 void aout_unlock (unsigned);
192 # define aout_lock( i ) (void)0
193 # define aout_unlock( i ) (void)0
196 static inline void aout_lock_mixer( aout_instance_t *p_aout )
198 aout_lock( MIXER_LOCK );
199 vlc_mutex_lock( &p_aout->mixer_lock );
202 static inline void aout_unlock_mixer( aout_instance_t *p_aout )
204 aout_unlock( MIXER_LOCK );
205 vlc_mutex_unlock( &p_aout->mixer_lock );
208 static inline void aout_lock_input_fifos( aout_instance_t *p_aout )
210 aout_lock( INPUT_FIFO_LOCK );
211 vlc_mutex_lock( &p_aout->input_fifos_lock );
214 static inline void aout_unlock_input_fifos( aout_instance_t *p_aout )
216 aout_unlock( INPUT_FIFO_LOCK );
217 vlc_mutex_unlock( &p_aout->input_fifos_lock );
220 static inline void aout_lock_output_fifo( aout_instance_t *p_aout )
222 aout_lock( OUTPUT_FIFO_LOCK );
223 vlc_mutex_lock( &p_aout->output_fifo_lock );
226 static inline void aout_unlock_output_fifo( aout_instance_t *p_aout )
228 aout_unlock( OUTPUT_FIFO_LOCK );
229 vlc_mutex_unlock( &p_aout->output_fifo_lock );
232 static inline void aout_lock_input( aout_instance_t *p_aout, aout_input_t * p_input )
235 aout_lock( INPUT_LOCK );
236 vlc_mutex_lock( &p_input->lock );
239 static inline void aout_unlock_input( aout_instance_t *p_aout, aout_input_t * p_input )
242 aout_unlock( INPUT_LOCK );
243 vlc_mutex_unlock( &p_input->lock );
246 static inline void aout_lock_volume( aout_instance_t *p_aout )
248 aout_lock( VOLUME_VARS_LOCK );
249 vlc_mutex_lock( &p_aout->volume_vars_lock );
252 static inline void aout_unlock_volume( aout_instance_t *p_aout )
254 aout_unlock( VOLUME_VARS_LOCK );
255 vlc_mutex_unlock( &p_aout->volume_vars_lock );
261 * This function will safely mark aout input to be restarted as soon as
262 * possible to take configuration changes into account */
263 static inline void AoutInputsMarkToRestart( aout_instance_t *p_aout )
266 aout_lock_mixer( p_aout );
267 for( i = 0; i < p_aout->i_nb_inputs; i++ )
268 p_aout->pp_inputs[i]->b_restart = true;
269 aout_unlock_mixer( p_aout );
272 /* This function will add or remove a a module from a string list (comma
273 * separated). It will return true if there is a modification
274 * In case p_aout is NULL, we will use configuration instead of variable */
275 static inline bool AoutChangeFilterString( vlc_object_t *p_obj, aout_instance_t * p_aout,
276 const char* psz_variable,
277 const char *psz_name, bool b_add )
282 if( *psz_name == '\0' )
286 psz_val = var_GetString( p_aout, psz_variable );
289 psz_val = var_CreateGetString( p_obj->p_libvlc, "audio-filter" );
290 var_Destroy( p_obj->p_libvlc, "audio-filter" );
294 psz_val = strdup( "" );
296 psz_parser = strstr( psz_val, psz_name );
298 if( ( b_add && psz_parser ) || ( !b_add && !psz_parser ) )
307 char *psz_old = psz_val;
310 if( asprintf( &psz_val, "%s:%s", psz_old, psz_name ) == -1 )
314 psz_val = strdup( psz_name );
319 const int i_name = strlen( psz_name );
320 const char *psz_next;
322 psz_next = &psz_parser[i_name];
323 if( *psz_next == ':' )
326 memmove( psz_parser, psz_next, strlen(psz_next)+1 );
330 var_SetString( p_aout, psz_variable, psz_val );
332 config_PutPsz( p_obj, psz_variable, psz_val );
337 #endif /* !__LIBVLC_AOUT_INTERNAL_H */