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authorDujardin Bernard <dujardin.iut@numericable.fr>2007-02-27 17:49:00 +0000
committerDiego Biurrun <diego@biurrun.de>2007-02-27 17:49:00 +0000
commit1faf7dc807811ab7479435940a488488e0f90dcd (patch)
tree02d8c3d678f1059814e4c635269a7efa63a7c31e /libavutil/fifo.h
parenteebfba2e24bee9c0efb839b7551bf9b6b96bd717 (diff)
downloadffmpeg-1faf7dc807811ab7479435940a488488e0f90dcd.tar.gz
Doxygen documentation for all functions, patch by Dujardin Bernard,
dujardin.iut numericable fr with some further changes by me. Originally committed as revision 8151 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavutil/fifo.h')
-rw-r--r--libavutil/fifo.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/libavutil/fifo.h b/libavutil/fifo.h
index 52badcd237..177603434f 100644
--- a/libavutil/fifo.h
+++ b/libavutil/fifo.h
@@ -16,6 +16,11 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+/**
+ * @file fifo.h
+ * A very simple circular buffer FIFO implementation.
+ */
+
#ifndef FIFO_H
#define FIFO_H
@@ -24,15 +29,74 @@ typedef struct AVFifoBuffer {
uint8_t *rptr, *wptr, *end;
} AVFifoBuffer;
+/**
+ * Initializes a FIFO *.
+ * @param *f FIFO buffer
+ * @param size of FIFO
+ * @return <0 for failure >=0 otherwise
+ */
int av_fifo_init(AVFifoBuffer *f, int size);
+
+/**
+ * Frees a FIFO *.
+ * @param *f FIFO buffer
+ */
void av_fifo_free(AVFifoBuffer *f);
+
+/**
+ * Returns the size of a FIFO *.
+ * @param *f FIFO buffer
+ * @return size
+ */
int av_fifo_size(AVFifoBuffer *f);
+
+/**
+ * Reads the data from the FIFO *.
+ * @param *f FIFO buffer
+ * @param *buf data destination
+ * @param buf_size data size
+ * @return -1 if not enough data
+ */
int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size);
+
+/**
+ * Reads the data from the FIFO *.
+ * @param *f FIFO buffer
+ * @param buf_size data size
+ * @param *func generic read function
+ * @param *dest data destination
+ * @return -1 if not enough data
+ */
int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest);
+
+/**
+ * Writes the data in the FIFO *.
+ * @param *f FIFO buffer
+ * @param *buf data source
+ * @param size data size
+ */
void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size);
+
+/**
+ * Resizes the FIFO *.
+ * @param *f FIFO buffer
+ * @param size data size
+ */
void av_fifo_realloc(AVFifoBuffer *f, unsigned int size);
+
+/**
+ * Discards the data from the FIFO *.
+ * @param *f FIFO buffer
+ * @param size data size
+ */
void av_fifo_drain(AVFifoBuffer *f, int size);
+/**
+ * Returns a pointer with circular offset from FIFO's read pointer.
+ * @param *f FIFO buffer
+ * @param offs offset
+ * @return ptr=rptr+offs if rptr+offs<end else rptr+offs -(end-begin)
+ */
static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
{
uint8_t *ptr = f->rptr + offs;