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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
*
* $Id: xine_decoder.c,v 1.47 2002/12/26 21:53:42 miguelfreitas Exp $
*
* stuff needed to turn libmpeg2 into a xine decoder plugin
*/
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "xine_internal.h"
#include "video_out.h"
#include "mpeg2.h"
#include "mpeg2_internal.h"
#include "buffer.h"
/*
#define LOG
*/
typedef struct {
video_decoder_class_t decoder_class;
} mpeg2_class_t;
typedef struct mpeg2dec_decoder_s {
video_decoder_t video_decoder;
mpeg2dec_t mpeg2;
mpeg2_class_t *class;
xine_stream_t *stream;
} mpeg2dec_decoder_t;
static void mpeg2dec_decode_data (video_decoder_t *this_gen, buf_element_t *buf) {
mpeg2dec_decoder_t *this = (mpeg2dec_decoder_t *) this_gen;
#ifdef LOG
printf ("libmpeg2: decode_data, flags=0x%08x ...\n", buf->decoder_flags);
#endif
/* handle aspect hints from xine-dvdnav */
if (buf->decoder_flags & BUF_FLAG_SPECIAL) {
if (buf->decoder_info[1] == BUF_SPECIAL_ASPECT) {
this->mpeg2.force_aspect = buf->decoder_info[2];
if (buf->decoder_info[3] == 0x1 && buf->decoder_info[2] == XINE_VO_ASPECT_ANAMORPHIC)
/* letterboxing is denied, we have to do pan&scan */
this->mpeg2.force_aspect = XINE_VO_ASPECT_PAN_SCAN;
}
return;
}
if (buf->decoder_flags & BUF_FLAG_PREVIEW) {
mpeg2_find_sequence_header (&this->mpeg2, buf->content, buf->content + buf->size);
} else {
mpeg2_decode_data (&this->mpeg2, buf->content, buf->content + buf->size,
buf->pts);
}
#ifdef LOG
printf ("libmpeg2: decode_data...done\n");
#endif
}
static void mpeg2dec_flush (video_decoder_t *this_gen) {
mpeg2dec_decoder_t *this = (mpeg2dec_decoder_t *) this_gen;
#ifdef LOG
printf ("libmpeg2: flush\n");
#endif
mpeg2_flush (&this->mpeg2);
}
static void mpeg2dec_reset (video_decoder_t *this_gen) {
mpeg2dec_decoder_t *this = (mpeg2dec_decoder_t *) this_gen;
mpeg2_reset (&this->mpeg2);
}
static void mpeg2dec_discontinuity (video_decoder_t *this_gen) {
mpeg2dec_decoder_t *this = (mpeg2dec_decoder_t *) this_gen;
mpeg2_discontinuity (&this->mpeg2);
}
static void mpeg2dec_dispose (video_decoder_t *this_gen) {
mpeg2dec_decoder_t *this = (mpeg2dec_decoder_t *) this_gen;
#ifdef LOG
printf ("libmpeg2: close\n");
#endif
mpeg2_close (&this->mpeg2);
this->stream->video_out->close(this->stream->video_out, this->stream);
free (this);
}
static video_decoder_t *open_plugin (video_decoder_class_t *class_gen, xine_stream_t *stream) {
mpeg2dec_decoder_t *this ;
this = (mpeg2dec_decoder_t *) malloc (sizeof (mpeg2dec_decoder_t));
memset(this, 0, sizeof (mpeg2dec_decoder_t));
this->video_decoder.decode_data = mpeg2dec_decode_data;
this->video_decoder.flush = mpeg2dec_flush;
this->video_decoder.reset = mpeg2dec_reset;
this->video_decoder.discontinuity = mpeg2dec_discontinuity;
this->video_decoder.dispose = mpeg2dec_dispose;
this->stream = stream;
this->class = (mpeg2_class_t *) class_gen;
this->mpeg2.stream = stream;
mpeg2_init (&this->mpeg2);
stream->video_out->open(stream->video_out, stream);
this->mpeg2.force_aspect = 0;
return &this->video_decoder;
}
/*
* mpeg2 plugin class
*/
static char *get_identifier (video_decoder_class_t *this) {
return "mpeg2dec";
}
static char *get_description (video_decoder_class_t *this) {
return "mpeg2 based video decoder plugin";
}
static void dispose_class (video_decoder_class_t *this) {
free (this);
}
static void *init_plugin (xine_t *xine, void *data) {
mpeg2_class_t *this;
this = (mpeg2_class_t *) malloc (sizeof (mpeg2_class_t));
this->decoder_class.open_plugin = open_plugin;
this->decoder_class.get_identifier = get_identifier;
this->decoder_class.get_description = get_description;
this->decoder_class.dispose = dispose_class;
return this;
}
/*
* exported plugin catalog entry
*/
static uint32_t supported_types[] = { BUF_VIDEO_MPEG, 0 };
static decoder_info_t dec_info_mpeg2 = {
supported_types, /* supported types */
6 /* priority */
};
plugin_info_t xine_plugin_info[] = {
/* type, API, "name", version, special_info, init_function */
{ PLUGIN_VIDEO_DECODER, 14, "mpeg2", XINE_VERSION_CODE, &dec_info_mpeg2, init_plugin },
{ PLUGIN_NONE, 0, "", 0, NULL, NULL }
};
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