diff options
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msspeexdec.c')
| -rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msspeexdec.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msspeexdec.c b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msspeexdec.c new file mode 100644 index 00000000..b91ca360 --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msspeexdec.c @@ -0,0 +1,218 @@ +/* + 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 <config.h> + +#ifdef HAVE_SPEEX + +#include "msspeexdec.h" + +#ifdef HAVE_GLIB +#include <gmodule.h> +#endif + +extern MSFilter * ms_speex_enc_new(); + +MSCodecInfo speex_info= +{ + { + "Speex codec", + 0, + MS_FILTER_AUDIO_CODEC, + ms_speex_dec_new, + "A high quality variable bit-rate codec from Jean Marc Valin and David Rowe." + }, + ms_speex_enc_new, + ms_speex_dec_new, + 0, /*frame size */ + 0, + 8000, /*minimal bitrate */ + -1, /* sampling frequency */ + 110, /* payload type */ + "speex", + 1, + 1 +}; + + + +void ms_speex_codec_init() +{ + + ms_filter_register(MS_FILTER_INFO(&speex_info)); + /* //ms_filter_register(MS_FILTER_INFO(&speex_lbr_info)); */ +} + +#ifdef HAVE_GLIB +gchar * g_module_check_init(GModule *module) +{ + ms_speex_codec_init(); + + return NULL; +} +#else +gchar * g_module_check_init() +{ + ms_speex_codec_init(); + + return NULL; +} +#endif + +static MSSpeexDecClass * ms_speex_dec_class=NULL; +/* //static MSSpeexDecClass * ms_speexnb_dec_class=NULL; */ + +MSFilter * ms_speex_dec_new() +{ + MSSpeexDec *obj=g_new(MSSpeexDec,1); + + if (ms_speex_dec_class==NULL){ + ms_speex_dec_class=g_new(MSSpeexDecClass,1); + ms_speex_dec_class_init(ms_speex_dec_class); + } + MS_FILTER(obj)->klass=MS_FILTER_CLASS(ms_speex_dec_class); + + ms_speex_dec_init(obj); + return MS_FILTER(obj); +} + +void ms_speex_dec_init(MSSpeexDec *obj) +{ + ms_filter_init(MS_FILTER(obj)); + obj->initialized=0; + MS_FILTER(obj)->outfifos=obj->outf; + MS_FILTER(obj)->inqueues=obj->inq; + obj->outf[0]=NULL; + obj->inq[0]=NULL; + obj->frequency=8000; /*default value */ + +} + +void ms_speex_dec_init_core(MSSpeexDec *obj,const SpeexMode *mode) +{ + int pf=1; + + obj->speex_state=speex_decoder_init(mode); + speex_bits_init(&obj->bits); + /* enable the perceptual post filter */ + speex_decoder_ctl(obj->speex_state,SPEEX_SET_PF, &pf); + + speex_mode_query(mode, SPEEX_MODE_FRAME_SIZE, &obj->frame_size); + + obj->initialized=1; +} + +int ms_speex_dec_set_property(MSSpeexDec *obj, MSFilterProperty prop, int *value) +{ + if (obj->initialized){ + /* we are called when speex is running !! forbid that! */ + ms_warning("ms_speex_dec_set_property: cannot call this function when running!"); + return -1; + } + switch(prop){ + case MS_FILTER_PROPERTY_FREQ: + obj->frequency=value[0]; + break; + } + return 0; +} + +void ms_speex_dec_setup(MSSpeexDec *obj) +{ + const SpeexMode *mode; + g_message("Speex decoder setup: freq=%i",obj->frequency); + if ( obj->frequency< 16000) mode=&speex_nb_mode; + else mode=&speex_wb_mode; + ms_speex_dec_init_core(obj,mode); +} + +void ms_speex_dec_unsetup(MSSpeexDec *obj) +{ + ms_speex_dec_uninit_core(obj); +} + +void ms_speex_dec_class_init(MSSpeexDecClass *klass) +{ + gint frame_size=0; + + ms_filter_class_init(MS_FILTER_CLASS(klass)); + /* use the largest frame size to configure fifos */ + speex_mode_query(&speex_wb_mode, SPEEX_MODE_FRAME_SIZE, &frame_size); + MS_FILTER_CLASS(klass)->process=(MSFilterProcessFunc)ms_speex_dec_process; + MS_FILTER_CLASS(klass)->setup=(MSFilterSetupFunc)ms_speex_dec_setup; + MS_FILTER_CLASS(klass)->unsetup=(MSFilterSetupFunc)ms_speex_dec_unsetup; + MS_FILTER_CLASS(klass)->destroy=(MSFilterDestroyFunc)ms_speex_dec_destroy; + MS_FILTER_CLASS(klass)->set_property=(MSFilterPropertyFunc)ms_speex_dec_set_property; + ms_filter_class_set_name(MS_FILTER_CLASS(klass),"SpeexDecoder"); + MS_FILTER_CLASS(klass)->info=(MSFilterInfo*)&speex_info; + MS_FILTER_CLASS(klass)->max_foutputs=1; + MS_FILTER_CLASS(klass)->max_qinputs=1; + MS_FILTER_CLASS(klass)->w_maxgran=frame_size*2; + ms_trace("ms_speex_dec_class_init: w_maxgran is %i.",MS_FILTER_CLASS(klass)->w_maxgran); +} + +void ms_speex_dec_uninit_core(MSSpeexDec *obj) +{ + speex_decoder_destroy(obj->speex_state); + obj->initialized=0; +} + +void ms_speex_dec_uninit(MSSpeexDec *obj) +{ + +} + +void ms_speex_dec_destroy(MSSpeexDec *obj) +{ + ms_speex_dec_uninit(obj); + g_free(obj); +} + +void ms_speex_dec_process(MSSpeexDec *obj) +{ + MSFifo *outf=obj->outf[0]; + MSQueue *inq=obj->inq[0]; + gint16 *output; + gint gran=obj->frame_size*2; + gint i; + MSMessage *m; + + g_return_if_fail(inq!=NULL); + g_return_if_fail(outf!=NULL); + + m=ms_queue_get(inq); + g_return_if_fail(m!=NULL); + speex_bits_reset(&obj->bits); + ms_fifo_get_write_ptr(outf,gran,(void**)&output); + g_return_if_fail(output!=NULL); + if (m->data!=NULL){ + + speex_bits_read_from(&obj->bits,m->data,m->size); + /* decode */ + speex_decode_int(obj->speex_state,&obj->bits,(short*)output); + }else{ + /* we have a missing packet */ + speex_decode_int(obj->speex_state,NULL,(short*)output); + } + ms_message_destroy(m); + +} + +#endif /* HAVE_SPEEX */ |