mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 00:02:13 +00:00
99f5fef0ea
While I'm not very fond of "const", it's important for declarations (it decides whether a symbol is emitted in a read-only or read/write section). Fix all these cases, so we have writeable global data only when we really need.
262 lines
7.9 KiB
C
262 lines
7.9 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_STREAM_H
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#define MPLAYER_STREAM_H
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#include "common/msg.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include "bstr/bstr.h"
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enum streamtype {
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STREAMTYPE_GENERIC = 0,
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STREAMTYPE_FILE,
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STREAMTYPE_RADIO,
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STREAMTYPE_DVB,
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STREAMTYPE_DVD,
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STREAMTYPE_BLURAY,
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STREAMTYPE_PVR,
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STREAMTYPE_TV,
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STREAMTYPE_MF,
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STREAMTYPE_EDL,
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STREAMTYPE_AVDEVICE,
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};
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#define STREAM_BUFFER_SIZE 2048
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#define STREAM_MAX_SECTOR_SIZE (8 * 1024)
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// Max buffer for initial probe.
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#define STREAM_MAX_BUFFER_SIZE (2 * 1024 * 1024)
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// stream->mode
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#define STREAM_READ 0
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#define STREAM_WRITE 1
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// flags for stream_open_ext (this includes STREAM_READ and STREAM_WRITE)
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#define STREAM_NO_FILTERS 2
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#define STREAM_NO_MATCH -2
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#define STREAM_UNSUPPORTED -1
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#define STREAM_ERROR 0
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#define STREAM_OK 1
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enum stream_ctrl {
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STREAM_CTRL_GET_TIME_LENGTH = 1,
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STREAM_CTRL_GET_NUM_CHAPTERS,
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STREAM_CTRL_GET_CURRENT_TIME,
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STREAM_CTRL_SEEK_TO_TIME,
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STREAM_CTRL_GET_SIZE,
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STREAM_CTRL_GET_ASPECT_RATIO,
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STREAM_CTRL_GET_NUM_ANGLES,
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STREAM_CTRL_GET_ANGLE,
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STREAM_CTRL_SET_ANGLE,
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STREAM_CTRL_GET_NUM_TITLES,
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STREAM_CTRL_GET_LANG,
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STREAM_CTRL_GET_CURRENT_TITLE,
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STREAM_CTRL_SET_CURRENT_TITLE,
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STREAM_CTRL_GET_CACHE_SIZE,
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STREAM_CTRL_SET_CACHE_SIZE,
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STREAM_CTRL_GET_CACHE_FILL,
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STREAM_CTRL_GET_CACHE_IDLE,
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STREAM_CTRL_RESUME_CACHE,
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STREAM_CTRL_RECONNECT,
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// DVD/Bluray, signal general support for GET_CURRENT_TIME etc.
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STREAM_CTRL_MANAGES_TIMELINE,
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STREAM_CTRL_GET_START_TIME,
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STREAM_CTRL_GET_CHAPTER_TIME,
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STREAM_CTRL_GET_DVD_INFO,
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STREAM_CTRL_SET_CONTENTS,
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STREAM_CTRL_GET_METADATA,
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STREAM_CTRL_GET_BASE_FILENAME,
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STREAM_CTRL_GET_NAV_EVENT, // struct mp_nav_event**
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STREAM_CTRL_NAV_CMD, // struct mp_nav_cmd*
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STREAM_CTRL_GET_DISC_NAME,
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STREAM_CTRL_TV_SET_SCAN,
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STREAM_CTRL_SET_TV_FREQ,
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STREAM_CTRL_GET_TV_FREQ,
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STREAM_CTRL_SET_TV_COLORS,
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STREAM_CTRL_GET_TV_COLORS,
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STREAM_CTRL_TV_SET_NORM,
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STREAM_CTRL_TV_STEP_NORM,
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STREAM_CTRL_TV_SET_CHAN,
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STREAM_CTRL_TV_STEP_CHAN,
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STREAM_CTRL_TV_LAST_CHAN,
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STREAM_CTRL_DVB_SET_CHANNEL,
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STREAM_CTRL_DVB_STEP_CHANNEL,
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};
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struct stream_lang_req {
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int type; // STREAM_AUDIO, STREAM_SUB
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int id;
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char name[50];
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};
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struct stream_dvd_info_req {
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unsigned int palette[16];
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int num_subs;
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};
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// for STREAM_CTRL_SET_TV_COLORS
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#define TV_COLOR_BRIGHTNESS 1
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#define TV_COLOR_HUE 2
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#define TV_COLOR_SATURATION 3
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#define TV_COLOR_CONTRAST 4
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struct stream;
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typedef struct stream_info_st {
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const char *name;
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// opts is set from ->opts
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int (*open)(struct stream *st);
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const char *const *protocols;
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int priv_size;
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const void *priv_defaults;
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void *(*get_defaults)(struct stream *st);
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const struct m_option *options;
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const char *const *url_options;
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bool stream_filter;
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bool can_write;
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} stream_info_t;
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typedef struct stream {
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const struct stream_info_st *info;
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// Read
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int (*fill_buffer)(struct stream *s, char *buffer, int max_len);
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// Write
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int (*write_buffer)(struct stream *s, char *buffer, int len);
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// Seek
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int (*seek)(struct stream *s, int64_t pos);
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// Control
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// Will be later used to let streams like dvd and cdda report
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// their structure (ie tracks, chapters, etc)
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int (*control)(struct stream *s, int cmd, void *arg);
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// Close
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void (*close)(struct stream *s);
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enum streamtype type; // see STREAMTYPE_*
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enum streamtype uncached_type; // if stream is cache, type of wrapped str.
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int sector_size; // sector size (seek will be aligned on this size if non 0)
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int read_chunk; // maximum amount of data to read at once to limit latency
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unsigned int buf_pos, buf_len;
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int64_t pos;
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uint64_t end_pos; // static size; use STREAM_CTRL_GET_SIZE instead
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int eof;
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int mode; //STREAM_READ or STREAM_WRITE
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bool streaming; // known to be a network stream if true
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void *priv; // used for DVD, TV, RTSP etc
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char *url; // filename/url (possibly including protocol prefix)
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char *path; // filename (url without protocol prefix)
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char *mime_type; // when HTTP streaming is used
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char *demuxer; // request demuxer to be used
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char *lavf_type; // name of expected demuxer type for lavf
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bool seekable : 1; // presence of general byte seeking support
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bool fast_skip : 1; // consider stream fast enough to fw-seek by skipping
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bool safe_origin : 1; // used for playlists that can be opened safely
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bool allow_caching : 1; // stream cache makes sense
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struct mp_log *log;
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struct MPOpts *opts;
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struct mpv_global *global;
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FILE *capture_file;
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char *capture_filename;
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struct stream *uncached_stream; // underlying stream for cache wrapper
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struct stream *source;
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// Includes additional padding in case sizes get rounded up by sector size.
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unsigned char buffer[];
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} stream_t;
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int stream_fill_buffer(stream_t *s);
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void stream_set_capture_file(stream_t *s, const char *filename);
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struct mp_cache_opts;
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bool stream_wants_cache(stream_t *stream, struct mp_cache_opts *opts);
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int stream_enable_cache(stream_t **stream, struct mp_cache_opts *opts);
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// Internal
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int stream_cache_init(stream_t *cache, stream_t *stream,
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struct mp_cache_opts *opts);
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int stream_write_buffer(stream_t *s, unsigned char *buf, int len);
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inline static int stream_read_char(stream_t *s)
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{
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return (s->buf_pos < s->buf_len) ? s->buffer[s->buf_pos++] :
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(stream_fill_buffer(s) ? s->buffer[s->buf_pos++] : -256);
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}
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unsigned char *stream_read_line(stream_t *s, unsigned char *mem, int max,
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int utf16);
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int stream_skip_bom(struct stream *s);
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inline static int stream_eof(stream_t *s)
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{
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return s->eof;
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}
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inline static int64_t stream_tell(stream_t *s)
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{
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return s->pos + s->buf_pos - s->buf_len;
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}
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int stream_skip(stream_t *s, int64_t len);
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int stream_seek(stream_t *s, int64_t pos);
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int stream_read(stream_t *s, char *mem, int total);
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int stream_read_partial(stream_t *s, char *buf, int buf_size);
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struct bstr stream_peek(stream_t *s, int len);
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void stream_drop_buffers(stream_t *s);
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struct mpv_global;
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struct bstr stream_read_complete(struct stream *s, void *talloc_ctx,
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int max_size);
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int stream_control(stream_t *s, int cmd, void *arg);
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void free_stream(stream_t *s);
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struct stream *stream_create(const char *url, int flags, struct mpv_global *global);
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struct stream *stream_open(const char *filename, struct mpv_global *global);
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stream_t *open_output_stream(const char *filename, struct mpv_global *global);
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stream_t *open_memory_stream(void *data, int len);
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bool stream_check_interrupt(struct stream *s);
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bool stream_manages_timeline(stream_t *s);
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typedef struct {
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int id; // 0 - 31 mpeg; 128 - 159 ac3; 160 - 191 pcm
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int language;
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int type;
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int channels;
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} stream_language_t;
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void mp_url_unescape_inplace(char *buf);
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char *mp_url_escape(void *talloc_ctx, const char *s, const char *ok);
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// stream_file.c
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char *mp_file_url_to_filename(void *talloc_ctx, bstr url);
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#endif /* MPLAYER_STREAM_H */
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