uint32_t (*seek)(void *user_data, uint64_t position);
uint32_t (*truncate)(void *user_data);
void *user_data;
- uint32_t read_error;
};
struct mp4_tag {
void mp4_set_sample_position(struct mp4 *f, int32_t track, int32_t sample);
int32_t mp4_total_tracks(const struct mp4 *f);
bool mp4_is_audio_track(const struct mp4 *f, int32_t track);
-struct mp4 *mp4_open_read(struct mp4_callback *f);
+struct mp4 *mp4_open_read(const struct mp4_callback *cb);
void mp4_close(struct mp4 *f);
int32_t mp4_get_sample_size(const struct mp4 *f, int track, int sample);
uint32_t mp4_get_sample_rate(const struct mp4 *f, int32_t track);
uint32_t mp4_get_channel_count(const struct mp4 * f, int32_t track);
int32_t mp4_num_samples(const struct mp4 *f, int track);
uint64_t mp4_get_duration(const struct mp4 *f, int32_t track);
-struct mp4 *mp4_open_meta(struct mp4_callback *f);
+struct mp4 *mp4_open_meta(const struct mp4_callback *cb);
-int mp4_meta_get_by_index(const struct mp4 *f, unsigned int index,
- char **item, char **value);
-int32_t mp4_meta_update(struct mp4_callback *f,const struct mp4_metadata * data);
-
-int mp4_meta_get_num_items(const struct mp4 *f);
-int mp4_meta_get_artist(const struct mp4 *f, char **value);
-int mp4_meta_get_title(const struct mp4 *f, char **value);
-int mp4_meta_get_date(const struct mp4 *f, char **value);
-int mp4_meta_get_album(const struct mp4 *f, char **value);
-int mp4_meta_get_comment(const struct mp4 *f, char **value);
+struct mp4_metadata *mp4_get_meta(struct mp4 *f);
+int32_t mp4_meta_update(struct mp4 *f);
+char *mp4_meta_get_artist(const struct mp4 *f);
+char *mp4_meta_get_title(const struct mp4 *f);
+char *mp4_meta_get_date(const struct mp4 *f);
+char *mp4_meta_get_album(const struct mp4 *f);
+char *mp4_meta_get_comment(const struct mp4 *f);