From abac6175916c57f59ddb51ffe41bfd1d9851fe38 Mon Sep 17 00:00:00 2001 From: Fabrice Bellard Date: Mon, 25 Nov 2002 19:07:40 +0000 Subject: renamed libav to libavformat Originally committed as revision 1276 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/avio.h | 153 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 libavformat/avio.h (limited to 'libavformat/avio.h') diff --git a/libavformat/avio.h b/libavformat/avio.h new file mode 100644 index 0000000..541eff5 --- /dev/null +++ b/libavformat/avio.h @@ -0,0 +1,153 @@ +#ifndef AVIO_H +#define AVIO_H + +/* output byte stream handling */ + +typedef INT64 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; +}; + +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 + +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); +/* 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; + +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 *buf, int buf_size); + void (*write_packet)(void *opaque, UINT8 *buf, int buf_size); + int (*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; +} ByteIOContext; + +int init_put_byte(ByteIOContext *s, + unsigned char *buffer, + int buffer_size, + int write_flag, + void *opaque, + int (*read_packet)(void *opaque, UINT8 *buf, int buf_size), + void (*write_packet)(void *opaque, UINT8 *buf, int buf_size), + int (*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 val); +void put_be64(ByteIOContext *s, UINT64 val); +void put_le32(ByteIOContext *s, unsigned int val); +void put_be32(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_be64_double(ByteIOContext *s, double val); +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); +int url_feof(ByteIOContext *s); + +#define URL_EOF (-1) +int url_fgetc(ByteIOContext *s); +int url_fprintf(ByteIOContext *s, const char *fmt, ...); +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_byte(ByteIOContext *s); +unsigned int get_le32(ByteIOContext *s); +UINT64 get_le64(ByteIOContext *s); +unsigned int get_le16(ByteIOContext *s); + +double get_be64_double(ByteIOContext *s); +char *get_strz(ByteIOContext *s, char *buf, int maxlen); +unsigned int get_be16(ByteIOContext *s); +unsigned int get_be32(ByteIOContext *s); +UINT64 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 *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 **pbuffer); + +/* 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 + -- cgit v1.1