diff options
Diffstat (limited to 'drivers/speex/buffer.c')
| -rw-r--r-- | drivers/speex/buffer.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/drivers/speex/buffer.c b/drivers/speex/buffer.c deleted file mode 100644 index 848840e8aa..0000000000 --- a/drivers/speex/buffer.c +++ /dev/null @@ -1,176 +0,0 @@ -/* Copyright (C) 2007 Jean-Marc Valin - - File: buffer.c - This is a very simple ring buffer implementation. It is not thread-safe - so you need to do your own locking. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are - met: - - 1. Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - 3. The name of the author may not be used to endorse or promote products - derived from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. -*/ - - -#include "config.h" - - - -#include "os_support.h" -#include "arch.h" -#include <speex/speex_buffer.h> - -struct SpeexBuffer_ { - char *data; - int size; - int read_ptr; - int write_ptr; - int available; -}; - -EXPORT SpeexBuffer *speex_buffer_init(int size) -{ - SpeexBuffer *st = speex_alloc(sizeof(SpeexBuffer)); - st->data = speex_alloc(size); - st->size = size; - st->read_ptr = 0; - st->write_ptr = 0; - st->available = 0; - return st; -} - -EXPORT void speex_buffer_destroy(SpeexBuffer *st) -{ - speex_free(st->data); - speex_free(st); -} - -EXPORT int speex_buffer_write(SpeexBuffer *st, void *_data, int len) -{ - int end; - int end1; - char *data = _data; - if (len > st->size) - { - data += len-st->size; - len = st->size; - } - end = st->write_ptr + len; - end1 = end; - if (end1 > st->size) - end1 = st->size; - SPEEX_COPY(st->data + st->write_ptr, data, end1 - st->write_ptr); - if (end > st->size) - { - end -= st->size; - SPEEX_COPY(st->data, data+end1 - st->write_ptr, end); - } - st->available += len; - if (st->available > st->size) - { - st->available = st->size; - st->read_ptr = st->write_ptr; - } - st->write_ptr += len; - if (st->write_ptr > st->size) - st->write_ptr -= st->size; - return len; -} - -EXPORT int speex_buffer_writezeros(SpeexBuffer *st, int len) -{ - /* This is almost the same as for speex_buffer_write() but using - SPEEX_MEMSET() instead of SPEEX_COPY(). Update accordingly. */ - int end; - int end1; - if (len > st->size) - { - len = st->size; - } - end = st->write_ptr + len; - end1 = end; - if (end1 > st->size) - end1 = st->size; - SPEEX_MEMSET(st->data + st->write_ptr, 0, end1 - st->write_ptr); - if (end > st->size) - { - end -= st->size; - SPEEX_MEMSET(st->data, 0, end); - } - st->available += len; - if (st->available > st->size) - { - st->available = st->size; - st->read_ptr = st->write_ptr; - } - st->write_ptr += len; - if (st->write_ptr > st->size) - st->write_ptr -= st->size; - return len; -} - -EXPORT int speex_buffer_read(SpeexBuffer *st, void *_data, int len) -{ - int end, end1; - char *data = _data; - if (len > st->available) - { - SPEEX_MEMSET(data+st->available, 0, st->size-st->available); - len = st->available; - } - end = st->read_ptr + len; - end1 = end; - if (end1 > st->size) - end1 = st->size; - SPEEX_COPY(data, st->data + st->read_ptr, end1 - st->read_ptr); - - if (end > st->size) - { - end -= st->size; - SPEEX_COPY(data+end1 - st->read_ptr, st->data, end); - } - st->available -= len; - st->read_ptr += len; - if (st->read_ptr > st->size) - st->read_ptr -= st->size; - return len; -} - -EXPORT int speex_buffer_get_available(SpeexBuffer *st) -{ - return st->available; -} - -EXPORT int speex_buffer_resize(SpeexBuffer *st, int len) -{ - int old_len = st->size; - if (len > old_len) - { - st->data = speex_realloc(st->data, len); - /* FIXME: move data/pointers properly for growing the buffer */ - } else { - /* FIXME: move data/pointers properly for shrinking the buffer */ - st->data = speex_realloc(st->data, len); - } - return len; -} |