/* The mediastreamer library aims at providing modular media processing and I/O for linphone, but also for any telephony application. Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "msringplayer.h" #include "mssync.h" #include #include #include #include #include #include "waveheader.h" #define WAVE_HEADER_OFFSET sizeof(wave_header_t) enum { PLAY_RING, PLAY_SILENCE}; static int supported_freq[6]={8000,11025,16000,22050,32000,44100}; gint freq_is_supported(gint freq){ int i; for (i=0;i<6;i++){ if (abs(supported_freq[i]-freq)<50) return supported_freq[i]; } return 0; } static MSRingPlayerClass *ms_ring_player_class=NULL; /** * ms_ring_player_new: * @name: The path to the 16-bit 8khz raw file to be played as a ring. * @seconds: The number of seconds that separates two rings. * * Allocates a new MSRingPlayer object. * * * Returns: a pointer the the object, NULL if name could not be open. */ MSFilter * ms_ring_player_new(char *name, gint seconds) { MSRingPlayer *r; int fd=-1; if ((name!=NULL) && (strlen(name)!=0)) { fd=open(name,O_RDONLY); if (fd<0) { g_warning("ms_ring_player_new: failed to open %s.\n",name); return NULL; } }else { g_warning("ms_ring_player_new: Bad file name"); return NULL; } r=g_new(MSRingPlayer,1); ms_ring_player_init(r); if (ms_ring_player_class==NULL) { ms_ring_player_class=g_new(MSRingPlayerClass,1); ms_ring_player_class_init(ms_ring_player_class); } MS_FILTER(r)->klass=MS_FILTER_CLASS(ms_ring_player_class); r->fd=fd; r->silence=seconds; r->freq=8000; if (strstr(name,".wav")!=NULL){ wave_header_t header; int freq,freq2; /* read the header */ read(fd,&header,sizeof(wave_header_t)); freq=wave_header_get_rate(&header); if ((freq2=freq_is_supported(freq))>0){ r->freq=freq2; }else { g_warning("Unsupported sampling rate %i",freq); r->freq=8000; } r->channel=wave_header_get_channel(&header); lseek(fd,WAVE_HEADER_OFFSET,SEEK_SET); #ifdef WORDS_BIGENDIAN r->need_swap=1; #else r->need_swap=0; #endif } ms_ring_player_set_property(r, MS_FILTER_PROPERTY_FREQ,&r->freq); r->state=PLAY_RING; return(MS_FILTER(r)); } /* FOR INTERNAL USE*/ void ms_ring_player_init(MSRingPlayer *r) { ms_filter_init(MS_FILTER(r)); MS_FILTER(r)->outfifos=r->foutputs; MS_FILTER(r)->outqueues=r->qoutputs; memset(r->foutputs,0,sizeof(MSFifo*)*MS_RING_PLAYER_MAX_OUTPUTS); memset(r->qoutputs,0,sizeof(MSQueue*)*MS_RING_PLAYER_MAX_OUTPUTS); r->fd=-1; r->current_pos=0; r->need_swap=0; r->sync=NULL; } gint ms_ring_player_set_property(MSRingPlayer *f,MSFilterProperty prop, void *value) { switch(prop){ case MS_FILTER_PROPERTY_FREQ: f->rate=((gint*)value)[0]*2; f->silence_bytes=f->silence*f->rate; if (f->sync!=NULL) f->gran=(f->rate*f->sync->interval/1000)*2; break; } return 0; } gint ms_ring_player_get_property(MSRingPlayer *f,MSFilterProperty prop, void *value) { switch(prop){ case MS_FILTER_PROPERTY_FREQ: ((gint*)value)[0]=f->freq; break; case MS_FILTER_PROPERTY_CHANNELS: ((gint*)value)[0]=f->channel; break; } return 0; } gint ms_ring_player_get_sample_freq(MSRingPlayer *obj){ return obj->freq; } void ms_ring_player_class_init(MSRingPlayerClass *klass) { ms_filter_class_init(MS_FILTER_CLASS(klass)); ms_filter_class_set_name(MS_FILTER_CLASS(klass),"ringplay"); ms_filter_class_set_attr(MS_FILTER_CLASS(klass),FILTER_IS_SOURCE); MS_FILTER_CLASS(klass)->max_foutputs=MS_RING_PLAYER_MAX_OUTPUTS; MS_FILTER_CLASS(klass)->max_qoutputs=MS_RING_PLAYER_MAX_OUTPUTS; MS_FILTER_CLASS(klass)->w_maxgran=MS_RING_PLAYER_DEF_GRAN; MS_FILTER_CLASS(klass)->setup=(MSFilterSetupFunc)ms_ring_player_setup; MS_FILTER_CLASS(klass)->destroy=(MSFilterDestroyFunc)ms_ring_player_destroy; MS_FILTER_CLASS(klass)->process=(MSFilterProcessFunc)ms_ring_player_process; MS_FILTER_CLASS(klass)->set_property=(MSFilterPropertyFunc)ms_ring_player_set_property; MS_FILTER_CLASS(klass)->get_property=(MSFilterPropertyFunc)ms_ring_player_get_property; } void ms_ring_player_process(MSRingPlayer *r) { MSFifo *f; gint err; gint processed=0; gint gran=r->gran; char *p; g_return_if_fail(gran>0); /* process output fifos*/ f=r->foutputs[0]; ms_fifo_get_write_ptr(f,gran,(void**)&p); g_return_if_fail(p!=NULL); for (processed=0;processedstate){ case PLAY_RING: err=read(r->fd,&p[processed],gran-processed); if (err<0) { memset(&p[processed],0,gran-processed); processed=gran; g_warning("ms_ring_player_process: failed to read: %s.\n",strerror(errno)); return; } else if (errcurrent_pos=r->silence_bytes; lseek(r->fd,WAVE_HEADER_OFFSET,SEEK_SET); r->state=PLAY_SILENCE; ms_filter_notify_event(MS_FILTER(r),MS_RING_PLAYER_END_OF_RING_EVENT,NULL); } if (r->need_swap) swap_buffer(&p[processed],err); processed+=err; break; case PLAY_SILENCE: err=gran-processed; if (r->current_pos>err){ memset(&p[processed],0,err); r->current_pos-=gran; processed=gran; }else{ memset(&p[processed],0,r->current_pos); processed+=r->current_pos; r->state=PLAY_RING; } break; } } } /** * ms_ring_player_destroy: * @obj: A valid MSRingPlayer object. * * Destroy a MSRingPlayer object. * * */ void ms_ring_player_destroy( MSRingPlayer *obj) { if (obj->fd!=0) close(obj->fd); g_free(obj); } void ms_ring_player_setup(MSRingPlayer *r,MSSync *sync) { r->sync=sync; r->gran=(r->rate*r->sync->interval/1000)*r->channel; }