recycled-ni-libstb-hal/libeplayer3/tools/meta.c

/* konfetti
 * gpl
 * 2010
 *
 * example utitility to show metatags with ffmpeg.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <libavutil/avutil.h>
#include <libavformat/avformat.h>

static AVFormatContext *avContext = NULL;

void dump_metadata()
{
    AVDictionaryEntry *tag = NULL;
    while ((tag =
	    av_dict_get(avContext->metadata, "", tag,
			AV_DICT_IGNORE_SUFFIX)))
	printf("%s: %s\n", tag->key, tag->value);
}


int main(int argc, char *argv[])
{
    char file[255] = { "" };
    unsigned int i;
    int err;

    if (argc < 2) {
	printf("give me a filename please\n");
	return -1;
    }

    if (strstr(argv[1], "://") == NULL) {
	strcpy(file, "file://");
    }

    strcat(file, argv[1]);

    av_register_all();

    if ((err = avformat_open_input(&avContext, file, NULL, 0)) != 0) {
	char error[512];

	printf("avformat_open_input failed %d (%s)\n", err, file);
	av_strerror(err, error, 512);
	printf("Cause: %s\n", error);

	return -1;
    }

    if (avformat_find_stream_info(avContext, NULL) < 0) {
	printf("Error avformat_find_stream_info\n");
    }

    printf("\n***\n");
    dump_metadata();

    printf("\nstream specific metadata:\n");
    for (i = 0; i < avContext->nb_streams; i++) {
	AVStream *stream = avContext->streams[i];

	if (stream) {
	    AVDictionaryEntry *tag = NULL;
	    if (stream->metadata != NULL)
		while ((tag =
			av_dict_get(stream->metadata, "", tag,
				    AV_DICT_IGNORE_SUFFIX)))
		    printf("%s: %s\n", tag->key, tag->value);
	}
    }

    return 0;
}