1 files changed, 68 insertions, 0 deletions
diff --git a/libswresample/audioconvert.h b/libswresample/audioconvert.h
new file mode 100644
index 0000000000..6d09271b35
--- /dev/null
+++ b/libswresample/audioconvert.h
@@ -0,0 +1,68 @@
+/*
+ * audio conversion
+ * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2008 Peter Ross
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef SWR_AUDIOCONVERT_H
+#define SWR_AUDIOCONVERT_H
+
+/**
+ * @file
+ * Audio format conversion routines
+ */
+
+
+#include "swresample_internal.h"
+#include "libavutil/cpu.h"
+#include "libavutil/audioconvert.h"
+
+struct AudioConvert;
+typedef struct AudioConvert AudioConvert;
+
+/**
+ * Create an audio sample format converter context
+ * @param out_fmt Output sample format
+ * @param in_fmt Input sample format
+ * @param channels Number of channels
+ * @param flags See AV_CPU_FLAG_xx
+ * @param ch_map list of the channels id to pick from the source stream, NULL
+ *               if all channels must be selected
+ * @return NULL on error
+ */
+AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
+                                       enum AVSampleFormat in_fmt,
+                                       int channels, const int *ch_map,
+                                       int flags);
+
+/**
+ * Free audio sample format converter context.
+ * and set the pointer to NULL
+ */
+void swri_audio_convert_free(AudioConvert **ctx);
+
+/**
+ * Convert between audio sample formats
+ * @param[in] out array of output buffers for each channel. set to NULL to ignore processing of the given channel.
+ * @param[in] in array of input buffers for each channel
+ * @param len length of audio frame size (measured in samples)
+ */
+int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len);
+
+#endif /* AUDIOCONVERT_H */