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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* 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 <avdec.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int track = 0;
int stream = 0;
int main(int argc, char ** argv)
{
bgav_t * file;
int arg_index;
int64_t count;
int64_t first_pts = GAVL_TIME_UNDEFINED;
const gavl_video_format_t * format;
gavl_video_frame_t * frame;
if(argc == 1)
{
fprintf(stderr,
"Usage: count_samples [-as stream] [-t track] <location>\n");
return 0;
}
file = bgav_create();
arg_index = 1;
while(arg_index < argc - 1)
{
if(!strcmp(argv[arg_index], "-vs"))
{
stream = strtol(argv[arg_index+1], NULL, 10);
arg_index+=2;
}
else if(!strcmp(argv[arg_index], "-t"))
{
track = strtol(argv[arg_index+1], NULL, 10);
arg_index+=2;
}
else
arg_index++;
}
if(!bgav_open(file, argv[argc-1]))
{
fprintf(stderr, "Could not open file %s\n",
argv[argc-1]);
bgav_close(file);
return -1;
}
if(track < 0 || track >= bgav_num_tracks(file))
{
fprintf(stderr,
"No such track %d\n", track);
return -1;
}
bgav_select_track(file, track);
if(stream < 0 || stream >= bgav_num_video_streams(file, track))
{
fprintf(stderr,
"No such stream %d\n", stream);
return -1;
}
bgav_set_video_stream(file, stream, BGAV_STREAM_DECODE);
if(!bgav_start(file))
{
fprintf(stderr, "Starting decoders failed\n");
return -1;
}
else
fprintf(stderr, "Starting decoders done\n");
format = bgav_get_video_format(file, stream);
frame = gavl_video_frame_create(format);
count = 0;
while(bgav_read_video(file, frame, stream))
{
if(first_pts == GAVL_TIME_UNDEFINED)
first_pts = frame->timestamp;
count ++;
}
fprintf(stderr, "Track %d stream %d contains %"PRId64" frames\n",
track+1, stream+1, count);
bgav_close(file);
gavl_video_frame_destroy(frame);
return 0;
}
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