| /* |
| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include "msringplayer.h" |
| #include "mssync.h" |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #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;processed<gran;){ |
| switch(r->state){ |
| 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 (err<gran) |
| {/* end of file */ |
| |
| r->current_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; |
| } |