adding ffmpeg specific version

1 files changed, 83 insertions, 0 deletions

diff --git a/ffmpeg1/libavfilter/audio.h b/ffmpeg1/libavfilter/audio.h
new file mode 100644
index 0000000..3335c96
--- /dev/null
+++ b/ffmpeg1/libavfilter/audio.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) Stefano Sabatini | stefasab at gmail.com
+ * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu
+ *
+ * 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 AVFILTER_AUDIO_H
+#define AVFILTER_AUDIO_H
+
+#include "avfilter.h"
+#include "internal.h"
+
+static const enum AVSampleFormat ff_packed_sample_fmts_array[] = {
+    AV_SAMPLE_FMT_U8,
+    AV_SAMPLE_FMT_S16,
+    AV_SAMPLE_FMT_S32,
+    AV_SAMPLE_FMT_FLT,
+    AV_SAMPLE_FMT_DBL,
+    AV_SAMPLE_FMT_NONE
+};
+
+static const enum AVSampleFormat ff_planar_sample_fmts_array[] = {
+    AV_SAMPLE_FMT_U8P,
+    AV_SAMPLE_FMT_S16P,
+    AV_SAMPLE_FMT_S32P,
+    AV_SAMPLE_FMT_FLTP,
+    AV_SAMPLE_FMT_DBLP,
+    AV_SAMPLE_FMT_NONE
+};
+
+/** default handler for get_audio_buffer() for audio inputs */
+AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples);
+
+/** get_audio_buffer() handler for filters which simply pass audio along */
+AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples);
+
+/**
+ * Request an audio samples buffer with a specific set of permissions.
+ *
+ * @param link           the output link to the filter from which the buffer will
+ *                       be requested
+ * @param nb_samples     the number of samples per channel
+ * @return               A reference to the samples. This must be unreferenced with
+ *                       avfilter_unref_buffer when you are finished with it.
+ */
+AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples);
+
+/**
+ * Send a buffer of audio samples to the next filter.
+ *
+ * @param link       the output link over which the audio samples are being sent
+ * @param samplesref a reference to the buffer of audio samples being sent. The
+ *                   receiving filter will free this reference when it no longer
+ *                   needs it or pass it on to the next filter.
+ *
+ * @return >= 0 on success, a negative AVERROR on error. The receiving filter
+ * is responsible for unreferencing samplesref in case of error.
+ */
+int ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref);
+
+/**
+ * Send a buffer of audio samples to the next link, without checking
+ * min_samples.
+ */
+int ff_filter_samples_framed(AVFilterLink *link,
+                             AVFilterBufferRef *samplesref);
+
+#endif /* AVFILTER_AUDIO_H */