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/*
* Copyright (C) 2000-2002 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* network buffering control
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <unistd.h>
#include "net_buf_ctrl.h"
#define DEFAULT_LOW_WATER_MARK 2
#define DEFAULT_HIGH_WATER_MARK 5
/*
#define LOG
*/
struct nbc_s {
xine_stream_t *stream;
int buffering;
int low_water_mark;
int high_water_mark;
};
static void report_progress (xine_stream_t *stream, int p) {
xine_event_t event;
xine_progress_data_t prg;
prg.description = _("Buffering...");
prg.percent = p;
event.type = XINE_EVENT_PROGRESS;
event.data = &prg;
event.data_length = sizeof (xine_progress_data_t);
xine_event_send (stream, &event);
}
void nbc_check_buffers (nbc_t *this) {
int fifo_fill;
fifo_fill = this->stream->video_fifo->size(this->stream->video_fifo);
if (this->stream->audio_fifo) {
fifo_fill += 8*this->stream->audio_fifo->size(this->stream->audio_fifo);
}
if (this->buffering) {
report_progress (this->stream, fifo_fill*100 / this->high_water_mark);
#ifdef LOG
printf ("net_buf_ctl: buffering (%d/%d)...\n",
fifo_fill, this->high_water_mark);
#endif
}
if (fifo_fill<this->low_water_mark) {
if (!this->buffering) {
/* FIXME: send progress events about buffering
xine_event_t event;
xine_idx_progress_data_t idx;
*/
if (this->high_water_mark<150) {
/* increase marks to adapt to stream/network needs */
this->high_water_mark += 10;
/* this->low_water_mark = this->high_water_mark/4; */
}
}
this->stream->xine->clock->set_speed (this->stream->xine->clock, XINE_SPEED_PAUSE);
this->stream->xine->clock->set_option (this->stream->xine->clock, CLOCK_SCR_ADJUSTABLE, 0);
if (this->stream->audio_out)
this->stream->audio_out->audio_paused = 2;
this->buffering = 1;
} else if ( (fifo_fill>this->high_water_mark) && (this->buffering)) {
this->stream->xine->clock->set_speed (this->stream->xine->clock, XINE_SPEED_NORMAL);
this->stream->xine->clock->set_option (this->stream->xine->clock, CLOCK_SCR_ADJUSTABLE, 1);
if (this->stream->audio_out)
this->stream->audio_out->audio_paused = 0;
this->buffering = 0;
}
}
void nbc_close (nbc_t *this) {
this->stream->xine->clock->set_option (this->stream->xine->clock, CLOCK_SCR_ADJUSTABLE, 1);
free (this);
}
nbc_t *nbc_init (xine_stream_t *stream) {
nbc_t *this = (nbc_t *) malloc (sizeof (nbc_t));
this->stream = stream;
this->buffering = 0;
this->low_water_mark = DEFAULT_LOW_WATER_MARK;
this->high_water_mark = DEFAULT_HIGH_WATER_MARK;
return this;
}
void nbc_set_high_water_mark(nbc_t *this, int value) {
this->high_water_mark = value;
}
void nbc_set_low_water_mark(nbc_t *this, int value) {
this->low_water_mark = value;
}
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