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 #ifndef LIBVLC_AOUT_INTERNAL_H
25 # define LIBVLC_AOUT_INTERNAL_H 1
27 /* Max input rate factor (1/4 -> 4) */
28 # define AOUT_MAX_INPUT_RATE (4)
31 AOUT_RESAMPLING_NONE=0,
38 struct vout_thread_t *(*pf_request_vout)( void *, struct vout_thread_t *,
39 video_format_t *, bool );
41 } aout_request_vout_t;
43 struct filter_owner_sys_t
45 audio_output_t *p_aout;
46 aout_input_t *p_input;
49 block_t *aout_FilterBufferNew( filter_t *, int );
51 /** an input stream for the audio output */
54 audio_sample_format_t input;
55 float multiplier; /**< Replay gain multiplier */
58 filter_t * pp_filters[AOUT_MAX_FILTERS];
61 filter_t * p_playback_rate_filter;
64 filter_t * pp_resamplers[AOUT_MAX_FILTERS];
66 int i_resampling_type;
67 mtime_t i_resamp_start_date;
68 int i_resamp_start_drift;
70 /* Mixer information */
71 audio_replay_gain_t replay_gain;
73 /* If b_restart == 1, the input pipeline will be re-created. */
76 /* If b_error == 1, there is no input pipeline. */
79 /* last rate from input */
80 int i_last_input_rate;
87 aout_request_vout_t request_vout;
93 module_t *module; /**< Output plugin (or NULL if inactive) */
104 float multiplier; /**< Software volume amplification multiplier */
105 struct audio_mixer *mixer; /**< Software volume plugin */
106 } volume; /**< Volume and gain management (FIXME: input manager?) */
108 audio_sample_format_t mixer_format;
110 /* Filters between mixer and output */
111 filter_t *filters[AOUT_MAX_FILTERS];
119 audio_output_t output;
123 static inline aout_owner_t *aout_owner (audio_output_t *aout)
125 return &((aout_instance_t *)aout)->owner;
128 /****************************************************************************
130 *****************************************************************************/
133 int aout_InputNew( audio_output_t * p_aout, aout_input_t * p_input, const aout_request_vout_t * );
134 int aout_InputDelete( audio_output_t * p_aout, aout_input_t * p_input );
135 block_t *aout_InputPlay( audio_output_t *p_aout, aout_input_t *p_input,
136 block_t *p_buffer, int i_input_rate, date_t * );
137 void aout_InputCheckAndRestart( audio_output_t * p_aout, aout_input_t * p_input );
139 /* From filters.c : */
140 int aout_FiltersCreatePipeline( vlc_object_t *, filter_t **, int *,
141 const audio_sample_format_t *, const audio_sample_format_t * );
142 #define aout_FiltersCreatePipeline(o, pv, pc, inf, outf) \
143 aout_FiltersCreatePipeline(VLC_OBJECT(o), pv, pc, inf, outf)
144 void aout_FiltersDestroyPipeline( filter_t *const *, unsigned );
145 void aout_FiltersPlay( filter_t *const *, unsigned, aout_buffer_t ** );
148 struct audio_mixer *aout_MixerNew(vlc_object_t *, vlc_fourcc_t);
149 #define aout_MixerNew(o, f) aout_MixerNew(VLC_OBJECT(o), f)
150 void aout_MixerDelete(struct audio_mixer *);
151 void aout_MixerRun(struct audio_mixer *, block_t *, float);
153 /* From output.c : */
154 int aout_OutputNew( audio_output_t * p_aout,
155 const audio_sample_format_t * p_format );
156 void aout_OutputPlay( audio_output_t * p_aout, aout_buffer_t * p_buffer );
157 void aout_OutputPause( audio_output_t * p_aout, bool, mtime_t );
158 void aout_OutputFlush( audio_output_t * p_aout, bool );
159 void aout_OutputDelete( audio_output_t * p_aout );
162 /* From common.c : */
163 /* Release with vlc_object_release() */
164 audio_output_t *aout_New ( vlc_object_t * );
165 #define aout_New(a) aout_New(VLC_OBJECT(a))
167 void aout_FifoInit( vlc_object_t *, aout_fifo_t *, uint32_t );
168 mtime_t aout_FifoFirstDate( const aout_fifo_t * ) VLC_USED;
169 #define aout_FifoInit(o, f, r) aout_FifoInit(VLC_OBJECT(o), f, r)
170 void aout_FifoPush( aout_fifo_t *, aout_buffer_t * );
171 aout_buffer_t *aout_FifoPop( aout_fifo_t * p_fifo ) VLC_USED;
172 void aout_FifoReset( aout_fifo_t * );
173 void aout_FifoMoveDates( aout_fifo_t *, mtime_t );
174 void aout_FifoDestroy( aout_fifo_t * p_fifo );
175 void aout_FormatsPrint(vlc_object_t *, const char *,
176 const audio_sample_format_t *,
177 const audio_sample_format_t *);
178 #define aout_FormatsPrint(o, t, a, b) \
179 aout_FormatsPrint(VLC_OBJECT(o), t, a, b)
180 bool aout_ChangeFilterString( vlc_object_t *manager, vlc_object_t *aout,
181 const char *var, const char *name, bool b_add );
184 int aout_DecNew(audio_output_t *, const audio_sample_format_t *,
185 const audio_replay_gain_t *, const aout_request_vout_t *);
186 void aout_DecDelete(audio_output_t *);
187 block_t *aout_DecNewBuffer(audio_output_t *, size_t);
188 void aout_DecDeleteBuffer(audio_output_t *, block_t *);
189 int aout_DecPlay(audio_output_t *, block_t *, int i_input_rate);
190 int aout_DecGetResetLost(audio_output_t *);
191 void aout_DecChangePause(audio_output_t *, bool b_paused, mtime_t i_date);
192 void aout_DecFlush(audio_output_t *);
193 bool aout_DecIsEmpty(audio_output_t *);
195 /* Audio output locking */
197 #if !defined (NDEBUG) \
198 && defined __linux__ && (defined (__i386__) || defined (__x86_64__))
199 # define AOUT_DEBUG 1
209 void aout_lock_check (unsigned);
210 void aout_unlock_check (unsigned);
213 # define aout_lock_check( i ) (void)0
214 # define aout_unlock_check( i ) (void)0
217 static inline void aout_lock( audio_output_t *p_aout )
219 aout_lock_check( OUTPUT_LOCK );
220 vlc_mutex_lock( &aout_owner(p_aout)->lock );
223 static inline void aout_unlock( audio_output_t *p_aout )
225 aout_unlock_check( OUTPUT_LOCK );
226 vlc_mutex_unlock( &aout_owner(p_aout)->lock );
229 static inline void aout_lock_volume( audio_output_t *p_aout )
231 aout_lock_check( VOLUME_LOCK );
232 vlc_mutex_lock( &aout_owner(p_aout)->volume.lock );
235 static inline void aout_unlock_volume( audio_output_t *p_aout )
237 aout_unlock_check( VOLUME_LOCK );
238 vlc_mutex_unlock( &aout_owner(p_aout)->volume.lock );
241 #define aout_assert_locked( aout ) \
242 vlc_assert_locked( &aout_owner(aout)->lock )
247 * This function will safely mark aout input to be restarted as soon as
248 * possible to take configuration changes into account */
249 static inline void AoutInputsMarkToRestart( audio_output_t *p_aout )
252 if( aout_owner(p_aout)->input != NULL )
253 aout_owner(p_aout)->input->b_restart = true;
254 aout_unlock( p_aout );
257 #endif /* !LIBVLC_AOUT_INTERNAL_H */