mpv/stream/stream.h

290 lines
8.8 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_STREAM_H
#define MPLAYER_STREAM_H
#include "common/msg.h"
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <sys/types.h>
#include <fcntl.h>
#include "bstr/bstr.h"
enum streamtype {
STREAMTYPE_GENERIC = 0,
STREAMTYPE_FILE,
STREAMTYPE_RADIO,
STREAMTYPE_DVB,
STREAMTYPE_DVD,
STREAMTYPE_BLURAY,
STREAMTYPE_PVR,
STREAMTYPE_TV,
STREAMTYPE_MF,
STREAMTYPE_EDL,
STREAMTYPE_AVDEVICE,
};
#define STREAM_BUFFER_SIZE 2048
#define STREAM_MAX_SECTOR_SIZE (8 * 1024)
// Max buffer for initial probe.
#define STREAM_MAX_BUFFER_SIZE (2 * 1024 * 1024)
// stream->mode
#define STREAM_READ 0
#define STREAM_WRITE 1
// flags for stream_open_ext (this includes STREAM_READ and STREAM_WRITE)
#define STREAM_NO_FILTERS 2
// stream->flags
#define MP_STREAM_FAST_SKIPPING 1 // allow forward seeks by skipping
#define MP_STREAM_SEEK_BW 2
#define MP_STREAM_SEEK_FW 4
#define MP_STREAM_SEEK (MP_STREAM_SEEK_BW | MP_STREAM_SEEK_FW)
#define STREAM_NO_MATCH -2
#define STREAM_UNSUPPORTED -1
#define STREAM_ERROR 0
#define STREAM_OK 1
enum stream_ctrl {
STREAM_CTRL_GET_TIME_LENGTH = 1,
STREAM_CTRL_SEEK_TO_CHAPTER,
STREAM_CTRL_GET_CURRENT_CHAPTER,
STREAM_CTRL_GET_NUM_CHAPTERS,
STREAM_CTRL_GET_CURRENT_TIME,
STREAM_CTRL_SEEK_TO_TIME,
STREAM_CTRL_GET_SIZE,
STREAM_CTRL_GET_ASPECT_RATIO,
STREAM_CTRL_GET_NUM_ANGLES,
STREAM_CTRL_GET_ANGLE,
STREAM_CTRL_SET_ANGLE,
STREAM_CTRL_GET_NUM_TITLES,
STREAM_CTRL_GET_LANG,
STREAM_CTRL_GET_CURRENT_TITLE,
STREAM_CTRL_SET_CURRENT_TITLE,
STREAM_CTRL_GET_CACHE_SIZE,
STREAM_CTRL_GET_CACHE_FILL,
STREAM_CTRL_GET_CACHE_IDLE,
STREAM_CTRL_RESUME_CACHE,
STREAM_CTRL_RECONNECT,
// DVD/Bluray, signal general support for GET_CURRENT_TIME etc.
STREAM_CTRL_MANAGES_TIMELINE,
STREAM_CTRL_GET_START_TIME,
STREAM_CTRL_GET_CHAPTER_TIME,
STREAM_CTRL_GET_DVD_INFO,
STREAM_CTRL_SET_CONTENTS,
STREAM_CTRL_GET_METADATA,
STREAM_CTRL_GET_BASE_FILENAME,
STREAM_CTRL_GET_NAV_EVENT, // struct mp_nav_event**
STREAM_CTRL_NAV_CMD, // struct mp_nav_cmd*
STREAM_CTRL_GET_DVD_VOLUME_ID,
};
struct stream_lang_req {
int type; // STREAM_AUDIO, STREAM_SUB
int id;
char name[50];
};
struct stream_dvd_info_req {
unsigned int palette[16];
int num_subs;
};
struct stream;
typedef struct stream_info_st {
const char *name;
// opts is set from ->opts
int (*open)(struct stream *st, int mode);
const char **protocols;
int priv_size;
const void *priv_defaults;
const struct m_option *options;
const char **url_options;
bool stream_filter;
} stream_info_t;
typedef struct stream {
const struct stream_info_st *info;
// Read
int (*fill_buffer)(struct stream *s, char *buffer, int max_len);
// Write
int (*write_buffer)(struct stream *s, char *buffer, int len);
// Seek
int (*seek)(struct stream *s, int64_t pos);
// Control
// Will be later used to let streams like dvd and cdda report
// their structure (ie tracks, chapters, etc)
int (*control)(struct stream *s, int cmd, void *arg);
// Close
void (*close)(struct stream *s);
enum streamtype type; // see STREAMTYPE_*
enum streamtype uncached_type; // if stream is cache, type of wrapped str.
int flags; // MP_STREAM_SEEK_* or'ed flags
int sector_size; // sector size (seek will be aligned on this size if non 0)
int read_chunk; // maximum amount of data to read at once to limit latency
unsigned int buf_pos, buf_len;
int64_t pos, start_pos, end_pos;
int eof;
int mode; //STREAM_READ or STREAM_WRITE
bool streaming; // known to be a network stream if true
void *priv; // used for DVD, TV, RTSP etc
char *url; // filename/url (possibly including protocol prefix)
char *path; // filename (url without protocol prefix)
char *mime_type; // when HTTP streaming is used
char *demuxer; // request demuxer to be used
char *lavf_type; // name of expected demuxer type for lavf
bool safe_origin; // used for playlists that can be opened safely
bool allow_caching; // stream cache makes sense
struct mp_log *log;
struct MPOpts *opts;
struct mpv_global *global;
FILE *capture_file;
char *capture_filename;
struct stream *uncached_stream; // underlying stream for cache wrapper
struct stream *source;
// Includes additional padding in case sizes get rounded up by sector size.
unsigned char buffer[];
} stream_t;
int stream_fill_buffer(stream_t *s);
void stream_set_capture_file(stream_t *s, const char *filename);
int stream_enable_cache_percent(stream_t **stream, int64_t stream_cache_size,
int64_t stream_cache_def_size,
float stream_cache_min_percent,
float stream_cache_seek_min_percent);
// Internal
int stream_cache_init(stream_t *cache, stream_t *stream, int64_t size,
int64_t min, int64_t seek_limit);
int stream_write_buffer(stream_t *s, unsigned char *buf, int len);
inline static int stream_read_char(stream_t *s)
{
return (s->buf_pos < s->buf_len) ? s->buffer[s->buf_pos++] :
(stream_fill_buffer(s) ? s->buffer[s->buf_pos++] : -256);
}
inline static unsigned int stream_read_dword(stream_t *s)
{
unsigned int y;
y = stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
return y;
}
inline static uint64_t stream_read_qword(stream_t *s)
{
uint64_t y;
y = stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
y = (y << 8) | stream_read_char(s);
return y;
}
unsigned char *stream_read_line(stream_t *s, unsigned char *mem, int max,
int utf16);
int stream_skip_bom(struct stream *s);
inline static int stream_eof(stream_t *s)
{
return s->eof;
}
inline static int64_t stream_tell(stream_t *s)
{
return s->pos + s->buf_pos - s->buf_len;
}
int stream_skip(stream_t *s, int64_t len);
int stream_seek(stream_t *s, int64_t pos);
int stream_read(stream_t *s, char *mem, int total);
int stream_read_partial(stream_t *s, char *buf, int buf_size);
struct bstr stream_peek(stream_t *s, int len);
void stream_drop_buffers(stream_t *s);
struct mpv_global;
struct bstr stream_read_complete(struct stream *s, void *talloc_ctx,
int max_size);
int stream_control(stream_t *s, int cmd, void *arg);
void stream_update_size(stream_t *s);
void free_stream(stream_t *s);
struct stream *stream_create(const char *url, int flags, struct mpv_global *global);
struct stream *stream_open(const char *filename, struct mpv_global *global);
stream_t *open_output_stream(const char *filename, struct mpv_global *global);
stream_t *open_memory_stream(void *data, int len);
struct demux_stream;
/// Set the callback to be used by libstream to check for user
/// interruption during long blocking operations (cache filling, etc).
struct input_ctx;
void stream_set_interrupt_callback(int (*cb)(struct input_ctx *, int),
struct input_ctx *ctx);
/// Call the interrupt checking callback if there is one and
/// wait for time milliseconds
int stream_check_interrupt(int time);
bool stream_manages_timeline(stream_t *s);
/* stream/stream_dvd.c */
extern int dvd_title;
extern int dvd_angle;
extern int dvd_speed;
extern char *dvd_device, *cdrom_device;
extern int bluray_angle;
extern char *bluray_device;
typedef struct {
int id; // 0 - 31 mpeg; 128 - 159 ac3; 160 - 191 pcm
int language;
int type;
int channels;
} stream_language_t;
void mp_url_unescape_inplace(char *buf);
char *mp_url_escape(void *talloc_ctx, const char *s, const char *ok);
// stream_file.c
char *mp_file_url_to_filename(void *talloc_ctx, bstr url);
#endif /* MPLAYER_STREAM_H */