aout_internal.h
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:11k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * aout_internal.h : internal defines for audio output
- *****************************************************************************
- * Copyright (C) 2002 the VideoLAN team
- * $Id: ca2576e9d241c6a9c0aca9f019eba678625a43ad $
- *
- * Authors: Christophe Massiot <massiot@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #if defined(__PLUGIN__) || defined(__BUILTIN__) || !defined(__LIBVLC__)
- # error This header file can only be included from LibVLC.
- #endif
- #ifndef __LIBVLC_AOUT_INTERNAL_H
- # define __LIBVLC_AOUT_INTERNAL_H 1
- #include <assert.h>
- #if defined( __APPLE__ ) || defined( SYS_BSD )
- #undef HAVE_ALLOCA
- #endif
- #ifdef HAVE_ALLOCA
- # define ALLOCA_TEST( p_alloc, p_new_buffer )
- if ( (p_alloc)->i_alloc_type == AOUT_ALLOC_STACK )
- {
- (p_new_buffer) = alloca( i_alloc_size + sizeof(aout_buffer_t) );
- i_alloc_type = AOUT_ALLOC_STACK;
- }
- else
- #else
- # define ALLOCA_TEST( p_alloc, p_new_buffer )
- #endif
- #define aout_BufferAlloc( p_alloc, i_nb_usec, p_previous_buffer,
- p_new_buffer )
- if ( (p_alloc)->i_alloc_type == AOUT_ALLOC_NONE )
- {
- (p_new_buffer) = p_previous_buffer;
- }
- else
- {
- int i_alloc_size, i_alloc_type;
- i_alloc_size = (int)( (uint64_t)(p_alloc)->i_bytes_per_sec
- * (i_nb_usec) / 1000000 + 1 );
- ALLOCA_TEST( p_alloc, p_new_buffer )
- {
- (p_new_buffer) = malloc( i_alloc_size + sizeof(aout_buffer_t) );
- i_alloc_type = AOUT_ALLOC_HEAP;
- }
- if ( p_new_buffer != NULL )
- {
- (p_new_buffer)->i_alloc_type = i_alloc_type;
- (p_new_buffer)->i_size = i_alloc_size;
- (p_new_buffer)->p_buffer = (uint8_t *)(p_new_buffer)
- + sizeof(aout_buffer_t);
- (p_new_buffer)->b_discontinuity = false;
- if ( (p_previous_buffer) != NULL )
- {
- (p_new_buffer)->start_date =
- ((aout_buffer_t *)p_previous_buffer)->start_date;
- (p_new_buffer)->end_date =
- ((aout_buffer_t *)p_previous_buffer)->end_date;
- }
- }
- /* we'll keep that for a while --Meuuh */
- /* else printf("%s:%dn", __FILE__, __LINE__); */
- }
- struct aout_filter_owner_sys_t
- {
- aout_instance_t *p_aout;
- aout_input_t *p_input;
- };
- /****************************************************************************
- * Prototypes
- *****************************************************************************/
- /* From input.c : */
- int aout_InputNew( aout_instance_t * p_aout, aout_input_t * p_input, const aout_request_vout_t * );
- int aout_InputDelete( aout_instance_t * p_aout, aout_input_t * p_input );
- int aout_InputPlay( aout_instance_t * p_aout, aout_input_t * p_input,
- aout_buffer_t * p_buffer, int i_input_rate );
- /* From filters.c : */
- int aout_FiltersCreatePipeline ( aout_instance_t * p_aout, 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 );
- void aout_FiltersDestroyPipeline ( aout_instance_t * p_aout, aout_filter_t ** pp_filters, int i_nb_filters );
- void aout_FiltersPlay ( aout_instance_t * p_aout, aout_filter_t ** pp_filters, int i_nb_filters, aout_buffer_t ** pp_input_buffer );
- void aout_FiltersHintBuffers( aout_instance_t * p_aout, aout_filter_t ** pp_filters, int i_nb_filters, aout_alloc_t * p_first_alloc );
- /* From mixer.c : */
- int aout_MixerNew( aout_instance_t * p_aout );
- void aout_MixerDelete( aout_instance_t * p_aout );
- void aout_MixerRun( aout_instance_t * p_aout );
- int aout_MixerMultiplierSet( aout_instance_t * p_aout, float f_multiplier );
- int aout_MixerMultiplierGet( aout_instance_t * p_aout, float * pf_multiplier );
- /* From output.c : */
- int aout_OutputNew( aout_instance_t * p_aout,
- audio_sample_format_t * p_format );
- void aout_OutputPlay( aout_instance_t * p_aout, aout_buffer_t * p_buffer );
- void aout_OutputDelete( aout_instance_t * p_aout );
- /* From common.c : */
- #define aout_New(a) __aout_New(VLC_OBJECT(a))
- /* Release with vlc_object_release() */
- aout_instance_t * __aout_New ( vlc_object_t * );
- void aout_FifoInit( aout_instance_t *, aout_fifo_t *, uint32_t );
- mtime_t aout_FifoNextStart( aout_instance_t *, aout_fifo_t * );
- void aout_FifoPush( aout_instance_t *, aout_fifo_t *, aout_buffer_t * );
- void aout_FifoSet( aout_instance_t *, aout_fifo_t *, mtime_t );
- void aout_FifoMoveDates( aout_instance_t *, aout_fifo_t *, mtime_t );
- void aout_FifoDestroy( aout_instance_t * p_aout, aout_fifo_t * p_fifo );
- 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 );
- /* From intf.c :*/
- int aout_VolumeSoftGet( aout_instance_t *, audio_volume_t * );
- int aout_VolumeSoftSet( aout_instance_t *, audio_volume_t );
- int aout_VolumeSoftInfos( aout_instance_t *, audio_volume_t * );
- int aout_VolumeNoneGet( aout_instance_t *, audio_volume_t * );
- int aout_VolumeNoneSet( aout_instance_t *, audio_volume_t );
- int aout_VolumeNoneInfos( aout_instance_t *, audio_volume_t * );
- /* From dec.c */
- #define aout_DecNew(a, b, c, d, e) __aout_DecNew(VLC_OBJECT(a), b, c, d, e)
- aout_input_t * __aout_DecNew( vlc_object_t *, aout_instance_t **,
- audio_sample_format_t *, const audio_replay_gain_t *,
- const aout_request_vout_t * );
- int aout_DecDelete ( aout_instance_t *, aout_input_t * );
- aout_buffer_t * aout_DecNewBuffer( aout_input_t *, size_t );
- void aout_DecDeleteBuffer( aout_instance_t *, aout_input_t *, aout_buffer_t * );
- int aout_DecPlay( aout_instance_t *, aout_input_t *, aout_buffer_t *, int i_input_rate );
- int aout_DecGetResetLost( aout_instance_t *, aout_input_t * );
- void aout_DecChangePause( aout_instance_t *, aout_input_t *, bool b_paused, mtime_t i_date );
- void aout_DecFlush( aout_instance_t *, aout_input_t * );
- /* Helpers */
- static inline void aout_lock_mixer( aout_instance_t *p_aout )
- {
- vlc_mutex_lock( &p_aout->mixer_lock );
- }
- static inline void aout_unlock_mixer( aout_instance_t *p_aout )
- {
- vlc_mutex_unlock( &p_aout->mixer_lock );
- }
- static inline void aout_lock_input_fifos( aout_instance_t *p_aout )
- {
- vlc_mutex_lock( &p_aout->input_fifos_lock );
- }
- static inline void aout_unlock_input_fifos( aout_instance_t *p_aout )
- {
- vlc_mutex_unlock( &p_aout->input_fifos_lock );
- }
- static inline void aout_lock_output_fifo( aout_instance_t *p_aout )
- {
- vlc_mutex_lock( &p_aout->output_fifo_lock );
- }
- static inline void aout_unlock_output_fifo( aout_instance_t *p_aout )
- {
- vlc_mutex_unlock( &p_aout->output_fifo_lock );
- }
- static inline void aout_lock_input( aout_instance_t *p_aout, aout_input_t * p_input )
- {
- (void)p_aout;
- vlc_mutex_lock( &p_input->lock );
- }
- static inline void aout_unlock_input( aout_instance_t *p_aout, aout_input_t * p_input )
- {
- (void)p_aout;
- vlc_mutex_unlock( &p_input->lock );
- }
- /**
- * This function will safely mark aout input to be restarted as soon as
- * possible to take configuration changes into account */
- static inline void AoutInputsMarkToRestart( aout_instance_t *p_aout )
- {
- int i;
- aout_lock_mixer( p_aout );
- for( i = 0; i < p_aout->i_nb_inputs; i++ )
- p_aout->pp_inputs[i]->b_restart = true;
- aout_unlock_mixer( p_aout );
- }
- /* This function will add or remove a a module from a string list (comma
- * separated). It will return true if there is a modification
- * In case p_aout is NULL, we will use configuration instead of variable */
- static inline bool AoutChangeFilterString( vlc_object_t *p_obj, aout_instance_t * p_aout,
- const char* psz_variable,
- const char *psz_name, bool b_add )
- {
- vlc_value_t val;
- char *psz_parser;
- if( *psz_name == ' ' )
- return false;
- if( p_aout )
- var_Get( p_aout, psz_variable, &val );
- else
- val.psz_string = config_GetPsz( p_obj, "audio-filter" );
- if( !val.psz_string )
- val.psz_string = strdup("");
- psz_parser = strstr( val.psz_string, psz_name );
- if( ( b_add && psz_parser ) || ( !b_add && !psz_parser ) )
- {
- /* Nothing to do */
- free( val.psz_string );
- return false;
- }
- if( b_add )
- {
- char *psz_old = val.psz_string;
- if( *psz_old )
- {
- if( asprintf( &val.psz_string, "%s:%s", psz_old, psz_name ) == -1 )
- val.psz_string = NULL;
- }
- else
- val.psz_string = strdup( psz_name );
- free( psz_old );
- }
- else
- {
- const int i_name = strlen( psz_name );
- const char *psz_next;
- psz_next = &psz_parser[i_name];
- if( *psz_next == ':' )
- psz_next++;
- memmove( psz_parser, psz_next, strlen(psz_next)+1 );
- }
- if( p_aout )
- var_Set( p_aout, psz_variable, val );
- else
- config_PutPsz( p_obj, psz_variable, val.psz_string );
- free( val.psz_string );
- return true;
- }
- #endif /* !__LIBVLC_AOUT_INTERNAL_H */