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Diffstat (limited to 'include/xine/ring_buffer.h')
-rw-r--r-- | include/xine/ring_buffer.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/include/xine/ring_buffer.h b/include/xine/ring_buffer.h new file mode 100644 index 000000000..7678aa903 --- /dev/null +++ b/include/xine/ring_buffer.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2000-2006 the xine project + * + * This file is part of xine, a free video player. + * + * xine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * xine 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA + * + * Fifo + Ring Buffer + */ +typedef struct xine_ring_buffer_s xine_ring_buffer_t; + +/* Creates a new ring buffer */ +xine_ring_buffer_t *xine_ring_buffer_new(size_t size) XINE_MALLOC XINE_PROTECTED; + +/* Deletes a ring buffer */ +void xine_ring_buffer_delete(xine_ring_buffer_t *ring_buffer) XINE_PROTECTED; + +/* Returns a new chunk of the specified size */ +/* Might block if the ring buffer is full */ +void *xine_ring_buffer_alloc(xine_ring_buffer_t *ring_buffer, size_t size) XINE_PROTECTED; + +/* Put a chunk into the ring */ +void xine_ring_buffer_put(xine_ring_buffer_t *ring_buffer, void *chunk) XINE_PROTECTED; + +/* Get a chunk of a specified size from the ring buffer + * Might block if the ring buffer is empty + * param size: the desired size + * param rsize: the size of the chunk returned + * rsize is not equal to size at the end of stream, the caller MUST check + * rsize value. + */ +void *xine_ring_buffer_get(xine_ring_buffer_t *ring_buffer, size_t size, size_t *rsize) XINE_PROTECTED; + +/* Releases the chunk, makes memory available for the alloc function */ +void xine_ring_buffer_release(xine_ring_buffer_t *ring_buffer, void *chunk) XINE_PROTECTED; + +/* Closes the ring buffer + * The writer uses this function to signal the end of stream to the reader. + * The reader MUST check the rsize value returned by the get function. + */ +void xine_ring_buffer_close(xine_ring_buffer_t *ring_buffer) XINE_PROTECTED; + + |