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 float multiplier; /**< Replay gain multiplier */
55 unsigned samplerate; /**< Input sample rate */
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;
109 audio_sample_format_t input_format;
111 /* Filters between mixer and output */
112 filter_t *filters[AOUT_MAX_FILTERS];
120 audio_output_t output;
124 static inline aout_owner_t *aout_owner (audio_output_t *aout)
126 return &((aout_instance_t *)aout)->owner;
129 /****************************************************************************
131 *****************************************************************************/
134 int aout_InputNew(audio_output_t *, const audio_sample_format_t *,
135 aout_input_t *, const aout_request_vout_t *);
136 int aout_InputDelete( audio_output_t * p_aout, aout_input_t * p_input );
137 block_t *aout_InputPlay( audio_output_t *p_aout, aout_input_t *p_input,
138 block_t *p_buffer, int i_input_rate, date_t * );
139 void aout_InputCheckAndRestart( audio_output_t * p_aout, aout_input_t * p_input );
140 void aout_InputRequestRestart( audio_output_t *p_aout );
142 /* From filters.c : */
143 int aout_FiltersCreatePipeline( vlc_object_t *, filter_t **, int *,
144 const audio_sample_format_t *, const audio_sample_format_t * );
145 #define aout_FiltersCreatePipeline(o, pv, pc, inf, outf) \
146 aout_FiltersCreatePipeline(VLC_OBJECT(o), pv, pc, inf, outf)
147 void aout_FiltersDestroyPipeline( filter_t *const *, unsigned );
148 void aout_FiltersPlay( filter_t *const *, unsigned, aout_buffer_t ** );
151 struct audio_mixer *aout_MixerNew(vlc_object_t *, vlc_fourcc_t);
152 #define aout_MixerNew(o, f) aout_MixerNew(VLC_OBJECT(o), f)
153 void aout_MixerDelete(struct audio_mixer *);
154 void aout_MixerRun(struct audio_mixer *, block_t *, float);
156 /* From output.c : */
157 int aout_OutputNew( audio_output_t * p_aout,
158 const audio_sample_format_t * p_format );
159 void aout_OutputPlay( audio_output_t * p_aout, aout_buffer_t * p_buffer );
160 void aout_OutputPause( audio_output_t * p_aout, bool, mtime_t );
161 void aout_OutputFlush( audio_output_t * p_aout, bool );
162 void aout_OutputDelete( audio_output_t * p_aout );
165 /* From common.c : */
166 /* Release with vlc_object_release() */
167 audio_output_t *aout_New ( vlc_object_t * );
168 #define aout_New(a) aout_New(VLC_OBJECT(a))
170 void aout_FifoInit( vlc_object_t *, aout_fifo_t *, uint32_t );
171 mtime_t aout_FifoFirstDate( const aout_fifo_t * ) VLC_USED;
172 #define aout_FifoInit(o, f, r) aout_FifoInit(VLC_OBJECT(o), f, r)
173 void aout_FifoPush( aout_fifo_t *, aout_buffer_t * );
174 aout_buffer_t *aout_FifoPop( aout_fifo_t * p_fifo ) VLC_USED;
175 void aout_FifoReset( aout_fifo_t * );
176 void aout_FifoMoveDates( aout_fifo_t *, mtime_t );
177 void aout_FifoDestroy( aout_fifo_t * p_fifo );
178 void aout_FormatsPrint(vlc_object_t *, const char *,
179 const audio_sample_format_t *,
180 const audio_sample_format_t *);
181 #define aout_FormatsPrint(o, t, a, b) \
182 aout_FormatsPrint(VLC_OBJECT(o), t, a, b)
183 bool aout_ChangeFilterString( vlc_object_t *manager, vlc_object_t *aout,
184 const char *var, const char *name, bool b_add );
187 int aout_DecNew(audio_output_t *, const audio_sample_format_t *,
188 const audio_replay_gain_t *, const aout_request_vout_t *);
189 void aout_DecDelete(audio_output_t *);
190 block_t *aout_DecNewBuffer(audio_output_t *, size_t);
191 void aout_DecDeleteBuffer(audio_output_t *, block_t *);
192 int aout_DecPlay(audio_output_t *, block_t *, int i_input_rate);
193 int aout_DecGetResetLost(audio_output_t *);
194 void aout_DecChangePause(audio_output_t *, bool b_paused, mtime_t i_date);
195 void aout_DecFlush(audio_output_t *);
196 bool aout_DecIsEmpty(audio_output_t *);
198 /* Audio output locking */
200 #if !defined (NDEBUG) \
201 && defined __linux__ && (defined (__i386__) || defined (__x86_64__))
202 # define AOUT_DEBUG 1
212 void aout_lock_check (unsigned);
213 void aout_unlock_check (unsigned);
216 # define aout_lock_check( i ) (void)0
217 # define aout_unlock_check( i ) (void)0
220 static inline void aout_lock( audio_output_t *p_aout )
222 aout_lock_check( OUTPUT_LOCK );
223 vlc_mutex_lock( &aout_owner(p_aout)->lock );
226 static inline void aout_unlock( audio_output_t *p_aout )
228 aout_unlock_check( OUTPUT_LOCK );
229 vlc_mutex_unlock( &aout_owner(p_aout)->lock );
232 static inline void aout_lock_volume( audio_output_t *p_aout )
234 aout_lock_check( VOLUME_LOCK );
235 vlc_mutex_lock( &aout_owner(p_aout)->volume.lock );
238 static inline void aout_unlock_volume( audio_output_t *p_aout )
240 aout_unlock_check( VOLUME_LOCK );
241 vlc_mutex_unlock( &aout_owner(p_aout)->volume.lock );
244 #define aout_assert_locked( aout ) \
245 vlc_assert_locked( &aout_owner(aout)->lock )
247 #endif /* !LIBVLC_AOUT_INTERNAL_H */