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;
95 module_t *module; /**< Output plugin (or NULL if inactive) */
101 float multiplier; /**< Software volume amplification multiplier */
102 struct audio_mixer *mixer; /**< Software volume plugin */
103 } volume; /**< Volume and gain management (FIXME: input manager?) */
105 audio_sample_format_t mixer_format;
107 /* Filters between mixer and output */
108 filter_t *filters[AOUT_MAX_FILTERS];
114 audio_output_t output;
118 static inline aout_owner_t *aout_owner (audio_output_t *aout)
120 return &((aout_instance_t *)aout)->owner;
123 /****************************************************************************
125 *****************************************************************************/
128 int aout_InputNew( audio_output_t * p_aout, aout_input_t * p_input, const aout_request_vout_t * );
129 int aout_InputDelete( audio_output_t * p_aout, aout_input_t * p_input );
130 block_t *aout_InputPlay( audio_output_t *p_aout, aout_input_t *p_input,
131 block_t *p_buffer, int i_input_rate );
132 void aout_InputCheckAndRestart( audio_output_t * p_aout, aout_input_t * p_input );
134 /* From filters.c : */
135 int aout_FiltersCreatePipeline( audio_output_t *, filter_t **, int *,
136 const audio_sample_format_t *, const audio_sample_format_t * );
137 void aout_FiltersDestroyPipeline( filter_t *const *, unsigned );
138 void aout_FiltersPlay( filter_t *const *, unsigned, aout_buffer_t ** );
141 struct audio_mixer *aout_MixerNew(vlc_object_t *, vlc_fourcc_t);
142 #define aout_MixerNew(o, f) aout_MixerNew(VLC_OBJECT(o), f)
143 void aout_MixerDelete(struct audio_mixer *);
144 void aout_MixerRun(struct audio_mixer *, block_t *, float);
146 /* From output.c : */
147 int aout_OutputNew( audio_output_t * p_aout,
148 const audio_sample_format_t * p_format );
149 void aout_OutputPlay( audio_output_t * p_aout, aout_buffer_t * p_buffer );
150 void aout_OutputPause( audio_output_t * p_aout, bool, mtime_t );
151 void aout_OutputFlush( audio_output_t * p_aout, bool );
152 void aout_OutputDelete( audio_output_t * p_aout );
155 /* From common.c : */
156 /* Release with vlc_object_release() */
157 audio_output_t *aout_New ( vlc_object_t * );
158 #define aout_New(a) aout_New(VLC_OBJECT(a))
160 void aout_FifoInit( vlc_object_t *, aout_fifo_t *, uint32_t );
161 mtime_t aout_FifoFirstDate( const aout_fifo_t * ) VLC_USED;
162 #define aout_FifoInit(o, f, r) aout_FifoInit(VLC_OBJECT(o), f, r)
163 void aout_FifoPush( aout_fifo_t *, aout_buffer_t * );
164 aout_buffer_t *aout_FifoPop( aout_fifo_t * p_fifo ) VLC_USED;
165 void aout_FifoReset( aout_fifo_t * );
166 void aout_FifoMoveDates( aout_fifo_t *, mtime_t );
167 void aout_FifoDestroy( aout_fifo_t * p_fifo );
168 void aout_FormatsPrint( audio_output_t * p_aout, const char * psz_text, const audio_sample_format_t * p_format1, const audio_sample_format_t * p_format2 );
169 bool aout_ChangeFilterString( vlc_object_t *, audio_output_t *, const char *psz_variable, const char *psz_name, bool b_add );
172 aout_input_t *aout_DecNew( audio_output_t *, audio_sample_format_t *,
173 const audio_replay_gain_t *, const aout_request_vout_t * );
174 void aout_DecDelete ( audio_output_t *, aout_input_t * );
175 aout_buffer_t * aout_DecNewBuffer( aout_input_t *, size_t );
176 void aout_DecDeleteBuffer( audio_output_t *, aout_input_t *, aout_buffer_t * );
177 int aout_DecPlay( audio_output_t *, aout_input_t *, aout_buffer_t *, int i_input_rate );
178 int aout_DecGetResetLost( audio_output_t *, aout_input_t * );
179 void aout_DecChangePause( audio_output_t *, aout_input_t *, bool b_paused, mtime_t i_date );
180 void aout_DecFlush( audio_output_t *, aout_input_t * );
181 bool aout_DecIsEmpty( audio_output_t * p_aout, aout_input_t * p_input );
183 /* Audio output locking */
185 #if !defined (NDEBUG) \
186 && defined __linux__ && (defined (__i386__) || defined (__x86_64__))
187 # define AOUT_DEBUG 1
197 void aout_lock_check (unsigned);
198 void aout_unlock_check (unsigned);
201 # define aout_lock_check( i ) (void)0
202 # define aout_unlock_check( i ) (void)0
205 static inline void aout_lock( audio_output_t *p_aout )
207 aout_lock_check( OUTPUT_LOCK );
208 vlc_mutex_lock( &p_aout->lock );
211 static inline void aout_unlock( audio_output_t *p_aout )
213 aout_unlock_check( OUTPUT_LOCK );
214 vlc_mutex_unlock( &p_aout->lock );
217 static inline void aout_lock_volume( audio_output_t *p_aout )
219 aout_lock_check( VOLUME_LOCK );
220 vlc_mutex_lock( &aout_owner(p_aout)->volume.lock );
223 static inline void aout_unlock_volume( audio_output_t *p_aout )
225 aout_unlock_check( VOLUME_LOCK );
226 vlc_mutex_unlock( &aout_owner(p_aout)->volume.lock );
232 * This function will safely mark aout input to be restarted as soon as
233 * possible to take configuration changes into account */
234 static inline void AoutInputsMarkToRestart( audio_output_t *p_aout )
237 if( aout_owner(p_aout)->input != NULL )
238 aout_owner(p_aout)->input->b_restart = true;
239 aout_unlock( p_aout );
242 #endif /* !LIBVLC_AOUT_INTERNAL_H */