1 files changed, 201 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavformat/avio.h b/contrib/ffmpeg/libavformat/avio.h
new file mode 100644
index 000000000..f0fd1a85c
--- /dev/null
+++ b/contrib/ffmpeg/libavformat/avio.h
@@ -0,0 +1,201 @@
+/*
+ * unbuffered io for ffmpeg system
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * 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 AVIO_H
+#define AVIO_H
+
+/* output byte stream handling */
+
+typedef int64_t offset_t;
+
+/* unbuffered I/O */
+
+struct URLContext {
+    struct URLProtocol *prot;
+    int flags;
+    int is_streamed;  /* true if streamed (no seek possible), default = false */
+    int max_packet_size;  /* if non zero, the stream is packetized with this max packet size */
+    void *priv_data;
+    char filename[1]; /* specified filename */
+};
+
+typedef struct URLContext URLContext;
+
+typedef struct URLPollEntry {
+    URLContext *handle;
+    int events;
+    int revents;
+} URLPollEntry;
+
+#define URL_RDONLY 0
+#define URL_WRONLY 1
+#define URL_RDWR   2
+
+typedef int URLInterruptCB(void);
+
+int url_open(URLContext **h, const char *filename, int flags);
+int url_read(URLContext *h, unsigned char *buf, int size);
+int url_write(URLContext *h, unsigned char *buf, int size);
+offset_t url_seek(URLContext *h, offset_t pos, int whence);
+int url_close(URLContext *h);
+int url_exist(const char *filename);
+offset_t url_filesize(URLContext *h);
+int url_get_max_packet_size(URLContext *h);
+void url_get_filename(URLContext *h, char *buf, int buf_size);
+
+/* the callback is called in blocking functions to test regulary if
+   asynchronous interruption is needed. -EINTR is returned in this
+   case by the interrupted function. 'NULL' means no interrupt
+   callback is given. */
+void url_set_interrupt_cb(URLInterruptCB *interrupt_cb);
+
+/* not implemented */
+int url_poll(URLPollEntry *poll_table, int n, int timeout);
+
+typedef struct URLProtocol {
+    const char *name;
+    int (*url_open)(URLContext *h, const char *filename, int flags);
+    int (*url_read)(URLContext *h, unsigned char *buf, int size);
+    int (*url_write)(URLContext *h, unsigned char *buf, int size);
+    offset_t (*url_seek)(URLContext *h, offset_t pos, int whence);
+    int (*url_close)(URLContext *h);
+    struct URLProtocol *next;
+} URLProtocol;
+
+extern URLProtocol *first_protocol;
+extern URLInterruptCB *url_interrupt_cb;
+
+int register_protocol(URLProtocol *protocol);
+
+typedef struct {
+    unsigned char *buffer;
+    int buffer_size;
+    unsigned char *buf_ptr, *buf_end;
+    void *opaque;
+    int (*read_packet)(void *opaque, uint8_t *buf, int buf_size);
+    int (*write_packet)(void *opaque, uint8_t *buf, int buf_size);
+    offset_t (*seek)(void *opaque, offset_t offset, int whence);
+    offset_t pos; /* position in the file of the current buffer */
+    int must_flush; /* true if the next seek should flush */
+    int eof_reached; /* true if eof reached */
+    int write_flag;  /* true if open for writing */
+    int is_streamed;
+    int max_packet_size;
+    unsigned long checksum;
+    unsigned char *checksum_ptr;
+    unsigned long (*update_checksum)(unsigned long checksum, const uint8_t *buf, unsigned int size);
+    int error;         ///< contains the error code or 0 if no error happened
+} ByteIOContext;
+
+int init_put_byte(ByteIOContext *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),
+                  offset_t (*seek)(void *opaque, offset_t offset, int whence));
+
+void put_byte(ByteIOContext *s, int b);
+void put_buffer(ByteIOContext *s, const unsigned char *buf, int size);
+void put_le64(ByteIOContext *s, uint64_t val);
+void put_be64(ByteIOContext *s, uint64_t val);
+void put_le32(ByteIOContext *s, unsigned int val);
+void put_be32(ByteIOContext *s, unsigned int val);
+void put_le24(ByteIOContext *s, unsigned int val);
+void put_be24(ByteIOContext *s, unsigned int val);
+void put_le16(ByteIOContext *s, unsigned int val);
+void put_be16(ByteIOContext *s, unsigned int val);
+void put_tag(ByteIOContext *s, const char *tag);
+
+void put_strz(ByteIOContext *s, const char *buf);
+
+offset_t url_fseek(ByteIOContext *s, offset_t offset, int whence);
+void url_fskip(ByteIOContext *s, offset_t offset);
+offset_t url_ftell(ByteIOContext *s);
+offset_t url_fsize(ByteIOContext *s);
+int url_feof(ByteIOContext *s);
+int url_ferror(ByteIOContext *s);
+
+#define URL_EOF (-1)
+int url_fgetc(ByteIOContext *s);
+#ifdef __GNUC__
+int url_fprintf(ByteIOContext *s, const char *fmt, ...) __attribute__ ((__format__ (__printf__, 2, 3)));
+#else
+int url_fprintf(ByteIOContext *s, const char *fmt, ...);
+#endif
+char *url_fgets(ByteIOContext *s, char *buf, int buf_size);
+
+void put_flush_packet(ByteIOContext *s);
+
+int get_buffer(ByteIOContext *s, unsigned char *buf, int size);
+int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size);
+int get_byte(ByteIOContext *s);
+unsigned int get_le24(ByteIOContext *s);
+unsigned int get_le32(ByteIOContext *s);
+uint64_t get_le64(ByteIOContext *s);
+unsigned int get_le16(ByteIOContext *s);
+
+char *get_strz(ByteIOContext *s, char *buf, int maxlen);
+unsigned int get_be16(ByteIOContext *s);
+unsigned int get_be24(ByteIOContext *s);
+unsigned int get_be32(ByteIOContext *s);
+uint64_t get_be64(ByteIOContext *s);
+
+static inline int url_is_streamed(ByteIOContext *s)
+{
+    return s->is_streamed;
+}
+
+int url_fdopen(ByteIOContext *s, URLContext *h);
+int url_setbufsize(ByteIOContext *s, int buf_size);
+int url_fopen(ByteIOContext *s, const char *filename, int flags);
+int url_fclose(ByteIOContext *s);
+URLContext *url_fileno(ByteIOContext *s);
+int url_fget_max_packet_size(ByteIOContext *s);
+
+int url_open_buf(ByteIOContext *s, uint8_t *buf, int buf_size, int flags);
+int url_close_buf(ByteIOContext *s);
+
+int url_open_dyn_buf(ByteIOContext *s);
+int url_open_dyn_packet_buf(ByteIOContext *s, int max_packet_size);
+int url_close_dyn_buf(ByteIOContext *s, uint8_t **pbuffer);
+
+unsigned long get_checksum(ByteIOContext *s);
+void init_checksum(ByteIOContext *s, unsigned long (*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum);
+
+/* file.c */
+extern URLProtocol file_protocol;
+extern URLProtocol pipe_protocol;
+
+/* udp.c */
+extern URLProtocol udp_protocol;
+int udp_set_remote_url(URLContext *h, const char *uri);
+int udp_get_local_port(URLContext *h);
+int udp_get_file_handle(URLContext *h);
+
+/* tcp.c  */
+extern URLProtocol tcp_protocol;
+
+/* http.c */
+extern URLProtocol http_protocol;
+
+#endif
+