*/
extern const int program_birth_year;
-extern const char **opt_names;
extern AVCodecContext *avcodec_opts[AVMEDIA_TYPE_NB];
extern AVFormatContext *avformat_opts;
extern struct SwsContext *sws_opts;
-extern AVDictionary *format_opts, *video_opts, *audio_opts, *sub_opts;
+extern AVDictionary *format_opts, *codec_opts;
/**
* Initialize the cmdutils option system, in particular
void parse_options(int argc, char **argv, const OptionDef *options,
int (* parse_arg_function)(const char *opt, const char *arg));
-void set_context_opts(void *ctx, void *opts_ctx, int flags, AVCodec *codec);
+/**
+ * Check if the given stream matches a stream specifier.
+ *
+ * @param s Corresponding format context.
+ * @param st Stream from s to be checked.
+ * @param spec A stream specifier of the [v|a|s|d]:[<stream index>] form.
+ *
+ * @return 1 if the stream matches, 0 if it doesn't, <0 on error
+ */
+int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec);
+
+/**
+ * Filter out options for given codec.
+ *
+ * Create a new options dictionary containing only the options from
+ * opts which apply to the codec with ID codec_id.
+ *
+ * @param s Corresponding format context.
+ * @param st A stream from s for which the options should be filtered.
+ * @return a pointer to the created dictionary
+ */
+AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, AVFormatContext *s, AVStream *st);
+
+/**
+ * Setup AVCodecContext options for avformat_find_stream_info().
+ *
+ * Create an array of dictionaries, one dictionary for each stream
+ * contained in s.
+ * Each dictionary will contain the options from codec_opts which can
+ * be applied to the corresponding stream codec context.
+ *
+ * @return pointer to the created array of dictionaries, NULL if it
+ * cannot be created
+ */
+AVDictionary **setup_find_stream_info_opts(AVFormatContext *s, AVDictionary *codec_opts);
/**
* Print an error message to stderr, indicating filename and a human