SpecifierOpt *ts_scale;
int nb_ts_scale;
+ SpecifierOpt *dump_attachment;
+ int nb_dump_attachment;
/* output options */
StreamMap *stream_maps;
}
}
+static void assert_file_overwrite(const char *filename)
+{
+ if (!file_overwrite &&
+ (strchr(filename, ':') == NULL || filename[1] == ':' ||
+ av_strstart(filename, "file:", NULL))) {
+ if (avio_check(filename, 0) == 0) {
+ if (!using_stdin) {
+ fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
+ fflush(stderr);
+ if (!read_yesno()) {
+ fprintf(stderr, "Not overwriting - exiting\n");
+ exit_program(1);
+ }
+ }
+ else {
+ fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
+ exit_program(1);
+ }
+ }
+ }
+}
+
+static void dump_attachment(AVStream *st, const char *filename)
+{
+ int ret;
+ AVIOContext *out = NULL;
+ AVDictionaryEntry *e;
+
+ if (!st->codec->extradata_size) {
+ av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
+ nb_input_files - 1, st->index);
+ return;
+ }
+ if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
+ filename = e->value;
+ if (!*filename) {
+ av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
+ "in stream #%d:%d.\n", nb_input_files - 1, st->index);
+ exit_program(1);
+ }
+
+ assert_file_overwrite(filename);
+
+ if ((ret = avio_open (&out, filename, AVIO_FLAG_WRITE)) < 0) {
+ av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
+ filename);
+ exit_program(1);
+ }
+
+ avio_write(out, st->codec->extradata, st->codec->extradata_size);
+ avio_flush(out);
+ avio_close(out);
+}
+
static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
{
AVFormatContext *ic;
input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
input_files[nb_input_files - 1].rate_emu = o->rate_emu;
+ for (i = 0; i < o->nb_dump_attachment; i++) {
+ int j;
+
+ for (j = 0; j < ic->nb_streams; j++) {
+ AVStream *st = ic->streams[j];
+
+ if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
+ dump_attachment(st, o->dump_attachment[i].u.str);
+ }
+ }
+
for (i = 0; i < orig_nb_streams; i++)
av_dict_free(&opts[i]);
av_freep(&opts);
if (!(oc->oformat->flags & AVFMT_NOFILE)) {
/* test if it already exists to avoid loosing precious files */
- if (!file_overwrite &&
- (strchr(filename, ':') == NULL ||
- filename[1] == ':' ||
- av_strstart(filename, "file:", NULL))) {
- if (avio_check(filename, 0) == 0) {
- if (!using_stdin) {
- fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
- fflush(stderr);
- if (!read_yesno()) {
- fprintf(stderr, "Not overwriting - exiting\n");
- exit_program(1);
- }
- }
- else {
- fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
- exit_program(1);
- }
- }
- }
+ assert_file_overwrite(filename);
/* open the file */
if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
#endif
{ "stats", OPT_BOOL, {&print_stats}, "print progress report during encoding", },
{ "attach", HAS_ARG | OPT_FUNC2, {(void*)opt_attach}, "add an attachment to the output file", "filename" },
+ { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(dump_attachment)}, "extract an attachment into a file", "filename" },
/* video options */
{ "vframes", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {(void*)opt_video_frames}, "set the number of video frames to record", "number" },