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/*****************************************************************
* gmerlin - a general purpose multimedia framework and applications
*
* Copyright (c) 2001 - 2024 Members of the Gmerlin project
* http://github.com/bplaum
*
* 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 program 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <config.h>
#include <gmerlin/translation.h>
#include "decode.h"
static void * create_decoder()
{
decoder_t * dec = calloc(1, sizeof(*dec));
return dec;
}
static gavl_source_status_t read_video(void * priv, gavl_video_frame_t ** f)
{
gavl_source_status_t st;
gavl_packet_t * p = NULL;
decoder_t * dec = priv;
if((st = gavl_packet_source_read_packet(dec->psrc, &p)) != GAVL_SOURCE_OK)
return st;
dec->decode(dec, p, *f);
gavl_packet_to_video_frame_metadata(p, *f);
return GAVL_SOURCE_OK;
}
static gavl_video_source_t * open_decode_video(void * priv,
gavl_packet_source_t * src,
gavl_dictionary_t * stream)
{
gavl_compression_info_t ci;
decoder_t * dec = priv;
gavl_compression_info_init(&ci);
gavl_stream_get_compression_info(stream, &ci);
dec->fmt = gavl_stream_get_video_format_nc(stream);
dec->psrc = src;
switch(ci.codec_tag)
{
case GAVL_MK_FOURCC('P', '2', '0', '7'):
init_p207(dec);
break;
default:
break;
}
dec->vsrc = gavl_video_source_create(read_video, dec, 0, dec->fmt);
return dec->vsrc;
}
static const uint32_t codec_tags[] =
{
GAVL_MK_FOURCC('P', '2', '0', '7'),
0,
};
static const uint32_t * get_codec_tags(void * priv)
{
return codec_tags;
}
static void destroy_decoder(void * priv)
{
decoder_t * dec = priv;
if(dec->vsrc)
gavl_video_source_destroy(dec->vsrc);
if(dec->tmp_frame)
gavl_video_frame_destroy(dec->tmp_frame);
if(dec->cleanup)
dec->cleanup(dec);
free(dec);
}
const bg_codec_plugin_t the_plugin =
{
.common =
{
BG_LOCALE,
.name = "c_v4l2", /* Unique short name */
.long_name = "V4L2 decoder",
.description = "Decoder for formats from V4L2 drivers",
.type = BG_PLUGIN_DECOMPRESSOR_VIDEO,
.flags = 0,
.priority = 5,
.create = create_decoder,
.destroy = destroy_decoder,
},
.open_decode_video = open_decode_video,
.get_codec_tags = get_codec_tags,
};
/* Include this into all plugin modules exactly once
to let the plugin loader obtain the API version */
BG_GET_PLUGIN_API_VERSION;
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