1 /*****************************************************************************
2 * aout_internal.h : internal defines for audio output
3 *****************************************************************************
4 * Copyright (C) 2002 VLC authors and VideoLAN
7 * Authors: Christophe Massiot <massiot@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * 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 # include <vlc_atomic.h>
29 /* Max input rate factor (1/4 -> 4) */
30 # define AOUT_MAX_INPUT_RATE (4)
33 AOUT_RESAMPLING_NONE=0,
40 struct vout_thread_t *(*pf_request_vout)( void *, struct vout_thread_t *,
41 video_format_t *, bool );
43 } aout_request_vout_t;
45 struct filter_owner_sys_t
47 audio_output_t *p_aout;
48 aout_input_t *p_input;
51 /** an input stream for the audio output */
54 unsigned samplerate; /**< Input sample rate */
57 filter_t * pp_filters[AOUT_MAX_FILTERS];
60 filter_t * p_playback_rate_filter;
63 filter_t * pp_resamplers[AOUT_MAX_FILTERS];
65 int i_resampling_type;
66 mtime_t i_resamp_start_date;
67 int i_resamp_start_drift;
69 /* last rate from input */
70 int i_last_input_rate;
77 aout_request_vout_t request_vout;
83 module_t *module; /**< Output plugin (or NULL if inactive) */
94 float multiplier; /**< Software volume amplification multiplier */
95 struct audio_mixer *mixer; /**< Software volume plugin */
100 vlc_atomic_t multiplier;
101 audio_replay_gain_t data;
104 audio_sample_format_t mixer_format;
105 audio_sample_format_t input_format;
107 /* Filters between mixer and output */
108 filter_t *filters[AOUT_MAX_FILTERS];
111 vlc_atomic_t restart;
116 audio_output_t output;
120 static inline aout_owner_t *aout_owner (audio_output_t *aout)
122 return &((aout_instance_t *)aout)->owner;
125 /****************************************************************************
127 *****************************************************************************/
130 aout_input_t *aout_InputNew(audio_output_t *, const audio_sample_format_t *,
131 const audio_sample_format_t *,
132 const aout_request_vout_t *);
133 int aout_InputDelete( audio_output_t * p_aout, aout_input_t * p_input );
134 block_t *aout_InputPlay( audio_output_t *p_aout, aout_input_t *p_input,
135 block_t *p_buffer, int i_input_rate, date_t * );
137 /* From filters.c : */
138 int aout_FiltersCreatePipeline( vlc_object_t *, filter_t **, int *,
139 const audio_sample_format_t *, const audio_sample_format_t * );
140 #define aout_FiltersCreatePipeline(o, pv, pc, inf, outf) \
141 aout_FiltersCreatePipeline(VLC_OBJECT(o), pv, pc, inf, outf)
142 void aout_FiltersDestroyPipeline( filter_t *const *, unsigned );
143 void aout_FiltersPlay( filter_t *const *, unsigned, block_t ** );
146 #define aout_MixerNew(o, f) aout_MixerNew(VLC_OBJECT(o), f)
148 float aout_ReplayGainSelect(vlc_object_t *, const char *,
149 const audio_replay_gain_t *);
150 #define aout_ReplayGainSelect(o, s, g) \
151 aout_ReplayGainSelect(VLC_OBJECT(o), s, g)
153 static inline void aout_ReplayGainInit(audio_replay_gain_t *restrict d,
154 const audio_replay_gain_t *restrict s)
159 memset (d, 0, sizeof (*d));
163 /* From output.c : */
164 int aout_OutputNew( audio_output_t * p_aout,
165 const audio_sample_format_t * p_format );
166 void aout_OutputPlay( audio_output_t * p_aout, block_t * p_buffer );
167 void aout_OutputPause( audio_output_t * p_aout, bool, mtime_t );
168 void aout_OutputFlush( audio_output_t * p_aout, bool );
169 void aout_OutputDelete( audio_output_t * p_aout );
172 /* From common.c : */
173 audio_output_t *aout_New (vlc_object_t *);
174 #define aout_New(a) aout_New(VLC_OBJECT(a))
175 void aout_Destroy (audio_output_t *);
177 void aout_FormatsPrint(vlc_object_t *, const char *,
178 const audio_sample_format_t *,
179 const audio_sample_format_t *);
180 #define aout_FormatsPrint(o, t, a, b) \
181 aout_FormatsPrint(VLC_OBJECT(o), t, a, b)
182 bool aout_ChangeFilterString( vlc_object_t *manager, vlc_object_t *aout,
183 const char *var, const char *name, bool b_add );
186 int aout_DecNew(audio_output_t *, const audio_sample_format_t *,
187 const audio_replay_gain_t *, const aout_request_vout_t *);
188 void aout_DecDelete(audio_output_t *);
189 block_t *aout_DecNewBuffer(audio_output_t *, size_t);
190 void aout_DecDeleteBuffer(audio_output_t *, block_t *);
191 int aout_DecPlay(audio_output_t *, block_t *, int i_input_rate);
192 int aout_DecGetResetLost(audio_output_t *);
193 void aout_DecChangePause(audio_output_t *, bool b_paused, mtime_t i_date);
194 void aout_DecFlush(audio_output_t *);
195 bool aout_DecIsEmpty(audio_output_t *);
197 void aout_InputRequestRestart(audio_output_t *);
198 void aout_RequestRestart(audio_output_t *);
199 void aout_Shutdown (audio_output_t *);
201 /* Audio output locking */
203 #if !defined (NDEBUG) \
204 && defined __linux__ && (defined (__i386__) || defined (__x86_64__))
205 # define AOUT_DEBUG 1
215 void aout_lock_check (unsigned);
216 void aout_unlock_check (unsigned);
219 # define aout_lock_check( i ) (void)0
220 # define aout_unlock_check( i ) (void)0
223 static inline void aout_lock( audio_output_t *p_aout )
225 aout_lock_check( OUTPUT_LOCK );
226 vlc_mutex_lock( &aout_owner(p_aout)->lock );
229 static inline void aout_unlock( audio_output_t *p_aout )
231 aout_unlock_check( OUTPUT_LOCK );
232 vlc_mutex_unlock( &aout_owner(p_aout)->lock );
235 static inline void aout_lock_volume( audio_output_t *p_aout )
237 aout_lock_check( VOLUME_LOCK );
238 vlc_mutex_lock( &aout_owner(p_aout)->volume.lock );
241 static inline void aout_unlock_volume( audio_output_t *p_aout )
243 aout_unlock_check( VOLUME_LOCK );
244 vlc_mutex_unlock( &aout_owner(p_aout)->volume.lock );
247 #define aout_assert_locked( aout ) \
248 vlc_assert_locked( &aout_owner(aout)->lock )
250 #endif /* !LIBVLC_AOUT_INTERNAL_H */