diff options
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msfifo.h')
| -rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msfifo.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msfifo.h b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msfifo.h new file mode 100644 index 00000000..fde1bece --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/msfifo.h @@ -0,0 +1,73 @@ +/* + 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 +*/ + +#ifdef HAVE_GLIB +#include <glib.h> +#else +#include "glist.h" +#endif +#include "msbuffer.h" + +typedef struct _MSFifo +{ + gint r_gran; /*maximum granularity for reading*/ + gint w_gran; /*maximum granularity for writing*/ + gchar * rd_ptr; /* read pointer on the position where there is something to read on the MSBuffer */ + guint32 readsize; + gchar * wr_ptr; + gchar * prev_wr_ptr; + guint32 writesize; /* write pointer on the position where it is possible to write on the MSBuffer */ + gchar * begin; /* rd_ptr et wr_ptr must all be >=begin*/ + guint32 size; /* the length of the fifo, but this may not be equal to buffer->size*/ + guint32 saved_offset; + gchar * pre_end; /* the end of the buffer that is copied at the begginning when we wrap around*/ + gchar * w_end; /* when a wr ptr is expected to exceed end_offset, + it must be wrapped around to go at the beginning of the buffer. This is the end of the buffer*/ + gchar * r_end; /* this is the last position written at the end of the fifo. If a read ptr is expected to + exceed this pointer, it must be put at the begginning of the buffer */ + void *prev_data; /*user data, usually the writing MSFilter*/ + void *next_data; /* user data, usually the reading MSFilter */ + MSBuffer *buffer; +} MSFifo; + +/* constructor*/ +/* r_gran: max granularity for reading (in number of bytes)*/ +/* w_gran: max granularity for writing (in number of bytes)*/ +/* r_offset: number of bytes that are kept available behind read pointer (for recursive filters)*/ +/* w_offset: number of bytes that are kept available behind write pointer (for recursive filters)*/ +/* buf is a MSBuffer that should be compatible with the above parameter*/ +MSFifo * ms_fifo_new(MSBuffer *buf, gint r_gran, gint w_gran, gint r_offset, gint w_offset); + +/*does the same that ms_fifo_new(), but also allocate a compatible buffer automatically*/ +MSFifo * ms_fifo_new_with_buffer(gint r_gran, gint w_gran, gint r_offset, gint w_offset, gint min_buffer_size); + +void ms_fifo_destroy( MSFifo *fifo); + +void ms_fifo_destroy_with_buffer(MSFifo *fifo); + +/* get data to read */ +gint ms_fifo_get_read_ptr(MSFifo *fifo, gint bsize, void **ret_ptr); + +/* get a buffer to write*/ +gint ms_fifo_get_write_ptr(MSFifo *fifo, gint bsize, void **ret_ptr); + +/* in case the buffer got by ms_fifo_get_write_ptr() could not be filled completely, you must +tell it by using this function */ +void ms_fifo_update_write_ptr(MSFifo *fifo, gint written); |