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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* AV stream manager decalarations
*
* Copyright (c) 2007 Michael Sevakis
*
* This program 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.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef STREAM_MGR_H
#define STREAM_MGR_H
/* Basic media control interface - this handles state changes and stream
* coordination with assistance from the parser */
struct stream_mgr
{
unsigned int thread; /* Playback control thread */
struct event_queue *q; /* event queue for control thread */
const char *filename; /* Current filename */
uint32_t resume_time; /* The stream tick where playback was
stopped (or started) */
bool seeked; /* A seek happened and things must be
resynced */
int status; /* Current playback status */
struct list_item strl; /* List of available streams */
struct list_item actl; /* List of active streams */
struct mutex str_mtx; /* Main stream manager mutex */
struct mutex actl_mtx; /* Lock for current-streams list */
union /* A place for reusable non-cacheable parameters */
{
struct vo_rect rc;
struct stream_seek_data skd;
} parms;
};
extern struct stream_mgr stream_mgr SHAREDBSS_ATTR;
struct stream_window
{
off_t left, right;
};
/** Interface for use by streams and other internal objects **/
bool stream_get_window(struct stream_window *sw);
void stream_clear_notify(struct stream *str, int for_msg);
int str_next_data_not_ready(struct stream *str);
/* Called by a stream to say it got its buffering notification */
void str_data_notify_received(struct stream *str);
void stream_add_stream(struct stream *str);
void stream_remove_streams(void);
enum stream_events
{
__STREAM_EV_FIRST = STREAM_MESSAGE_LAST-1,
STREAM_EV_COMPLETE,
};
void stream_generate_event(struct stream *str, long id, intptr_t data);
/** Main control functions **/
/* Initialize the playback engine */
int stream_init(void);
/* Close the playback engine */
void stream_exit(void);
/* Open a new file */
int stream_open(const char *filename);
/* Close the current file */
int stream_close(void);
/* Plays from the current seekpoint if stopped */
int stream_play(void);
/* Pauses playback if playing */
int stream_pause(void);
/* Resumes playback if paused */
int stream_resume(void);
/* Stops all streaming activity if playing or paused */
int stream_stop(void);
/* Point stream at a particular time.
* whence = one of SEEK_SET, SEEK_CUR, SEEK_END */
int stream_seek(uint32_t time, int whence);
/* Show/Hide the video image at the current seekpoint */
bool stream_show_vo(bool show);
/* Set the visible section of video */
void stream_vo_set_clip(const struct vo_rect *rc);
#ifndef HAVE_LCD_COLOR
void stream_gray_show(bool show);
#endif
/* Display thumbnail of the current seekpoint */
bool stream_display_thumb(const struct vo_rect *rc);
/* Draw the frame at the current position */
bool stream_draw_frame(bool no_prepare);
/* Return video dimensions */
bool stream_vo_get_size(struct vo_ext *sz);
/* Returns the resume time in timestamp ticks */
uint32_t stream_get_resume_time(void);
/* Returns stream_get_time if no seek is pending or else the
last time give to seek */
uint32_t stream_get_seek_time(uint32_t *start);
/* Return the absolute stream time in clock ticks - adjusted by
* master clock stream via audio timestamps */
static inline uint32_t stream_get_time(void)
{ return pcm_output_get_clock(); }
/* Return the absolute clock time in clock ticks - unadjusted */
static inline uint32_t stream_get_ticks(uint32_t *start)
{ return pcm_output_get_ticks(start); }
/* Returns the current playback status */
static inline int stream_status(void)
{ return stream_mgr.status; }
/* Wait for a state transistion to complete */
void stream_wait_status(void);
/* Returns the playback length of the stream */
static inline uint32_t stream_get_duration(void)
{ return str_parser.duration; }
static inline bool stream_can_seek(void)
{ return parser_can_seek(); }
/* Keep the disk spinning (for seeking and browsing) */
static inline void stream_keep_disk_active(void)
{
#ifdef HAVE_DISK_STORAGE
rb->storage_spin();
#endif
}
#endif /* STREAM_MGR_H */
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