1 files changed, 107 insertions, 0 deletions
diff --git a/ffmpeg/libavformat/avio_internal.h b/ffmpeg/libavformat/avio_internal.h
new file mode 100644
index 0000000..cf36764
--- /dev/null
+++ b/ffmpeg/libavformat/avio_internal.h
@@ -0,0 +1,107 @@
+/*
+ *
+ * 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 AVFORMAT_AVIO_INTERNAL_H
+#define AVFORMAT_AVIO_INTERNAL_H
+
+#include "avio.h"
+#include "url.h"
+
+#include "libavutil/log.h"
+
+extern const AVClass ffio_url_class;
+
+int ffio_init_context(AVIOContext *s,
+                  unsigned char *buffer,
+                  int buffer_size,
+                  int write_flag,
+                  void *opaque,
+                  int (*read_packet)(void *opaque, uint8_t *buf, int buf_size),
+                  int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
+                  int64_t (*seek)(void *opaque, int64_t offset, int whence));
+
+
+/**
+ * Read size bytes from AVIOContext into buf.
+ * This reads at most 1 packet. If that is not enough fewer bytes will be
+ * returned.
+ * @return number of bytes read or AVERROR
+ */
+int ffio_read_partial(AVIOContext *s, unsigned char *buf, int size);
+
+void ffio_fill(AVIOContext *s, int b, int count);
+
+static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
+{
+    avio_wl32(pb, MKTAG(s[0], s[1], s[2], s[3]));
+}
+
+/**
+ * Rewind the AVIOContext using the specified buffer containing the first buf_size bytes of the file.
+ * Used after probing to avoid seeking.
+ * Joins buf and s->buffer, taking any overlap into consideration.
+ * @note s->buffer must overlap with buf or they can't be joined and the function fails
+ *
+ * @param s The read-only AVIOContext to rewind
+ * @param buf The probe buffer containing the first buf_size bytes of the file
+ * @param buf_size The size of buf
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code in case of failure
+ */
+int ffio_rewind_with_probe_data(AVIOContext *s, unsigned char **buf, int buf_size);
+
+uint64_t ffio_read_varlen(AVIOContext *bc);
+
+/** @warning must be called before any I/O */
+int ffio_set_buf_size(AVIOContext *s, int buf_size);
+
+int ffio_limit(AVIOContext *s, int size);
+
+void ffio_init_checksum(AVIOContext *s,
+                        unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len),
+                        unsigned long checksum);
+unsigned long ffio_get_checksum(AVIOContext *s);
+unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf,
+                                    unsigned int len);
+
+/**
+ * Open a write only packetized memory stream with a maximum packet
+ * size of 'max_packet_size'.  The stream is stored in a memory buffer
+ * with a big-endian 4 byte header giving the packet size in bytes.
+ *
+ * @param s new IO context
+ * @param max_packet_size maximum packet size (must be > 0)
+ * @return zero if no error.
+ */
+int ffio_open_dyn_packet_buf(AVIOContext **s, int max_packet_size);
+
+/**
+ * Create and initialize a AVIOContext for accessing the
+ * resource referenced by the URLContext h.
+ * @note When the URLContext h has been opened in read+write mode, the
+ * AVIOContext can be used only for writing.
+ *
+ * @param s Used to return the pointer to the created AVIOContext.
+ * In case of failure the pointed to value is set to NULL.
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code in case of failure
+ */
+int ffio_fdopen(AVIOContext **s, URLContext *h);
+
+#endif /* AVFORMAT_AVIO_INTERNAL_H */