adding ffmpeg specific version

1 files changed, 68 insertions, 0 deletions

diff --git a/ffmpeg1/libavformat/mov_chan.h b/ffmpeg1/libavformat/mov_chan.h
new file mode 100644
index 0000000..3fae939
--- /dev/null
+++ b/ffmpeg1/libavformat/mov_chan.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2011 Justin Ruggles
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * mov 'chan' tag reading/writing.
+ * @author Justin Ruggles
+ */
+
+#ifndef AVFORMAT_MOV_CHAN_H
+#define AVFORMAT_MOV_CHAN_H
+
+#include <stdint.h>
+
+#include "libavcodec/avcodec.h"
+#include "avformat.h"
+
+/**
+ * Get the channel layout for the specified channel layout tag.
+ *
+ * @param[in]  tag     channel layout tag
+ * @param[out] bitmap  channel bitmap (only used if needed)
+ * @return             channel layout
+ */
+uint64_t ff_mov_get_channel_layout(uint32_t tag, uint32_t bitmap);
+
+/**
+ * Get the channel layout tag for the specified codec id and channel layout.
+ * If the layout tag was not found, use a channel bitmap if possible.
+ *
+ * @param[in]  codec_id        codec id
+ * @param[in]  channel_layout  channel layout
+ * @param[out] bitmap          channel bitmap
+ * @return                     channel layout tag
+ */
+uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
+                                       uint64_t channel_layout,
+                                       uint32_t *bitmap);
+
+/**
+ * Read 'chan' tag from the input stream.
+ *
+ * @param s     AVFormatContext
+ * @param pb    AVIOContext
+ * @param st    The stream to set codec values for
+ * @param size  Remaining size in the 'chan' tag
+ * @return      0 if ok, or negative AVERROR code on failure
+ */
+int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
+                     int64_t size);
+
+#endif /* AVFORMAT_MOV_CHAN_H */