X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=mp4.h;h=00de8d64609d1bdf079e6010fe21817012240263;hb=c2e987abfcf711c85e00fc11b9ef00d38ad89f3a;hp=eb8cf87a1c3ac4a5774e3c24d78cffa77e7bc30a;hpb=c601bacb7f147a14bcc8200b24aa69201cb6b89e;p=paraslash.git

diff --git a/mp4.h b/mp4.h
index eb8cf87a..00de8d64 100644
--- a/mp4.h
+++ b/mp4.h
@@ -1,9 +1,9 @@
 struct mp4_callback {
-    uint32_t (*read)(void *user_data, void *buffer, uint32_t length);
-    uint32_t (*write)(void *udata, void *buffer, uint32_t length);
-    uint32_t (*seek)(void *user_data, uint64_t position);
-    uint32_t (*truncate)(void *user_data);
-    void *user_data;
+	ssize_t (*read)(void *user_data, void *buffer, size_t length);
+	ssize_t (*write)(void *user_data, void *buffer, size_t count);
+	off_t (*seek)(void *user_data, off_t offset, int whence);
+	int (*truncate)(void *user_data);
+	void *user_data;
 };
 
 struct mp4_tag {
@@ -19,22 +19,15 @@ struct mp4_metadata {
 
 struct mp4; /* opaque */
 
-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(const struct mp4_callback *cb);
+int mp4_set_sample_position(struct mp4 *f, uint32_t sample);
+int mp4_open_read(const struct mp4_callback *cb, struct mp4 **result);
 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(const struct mp4_callback *cb);
-
+int mp4_get_sample_size(const struct mp4 *f, uint32_t sample, uint32_t *result);
+uint16_t mp4_get_sample_rate(const struct mp4 *f);
+uint16_t mp4_get_channel_count(const struct mp4 *f);
+uint32_t mp4_num_samples(const struct mp4 *f);
+uint64_t mp4_get_duration(const struct mp4 *f);
+int mp4_open_meta(const struct mp4_callback *cb, struct mp4 **result);
 struct mp4_metadata *mp4_get_meta(struct mp4 *f);
-int32_t mp4_meta_update(struct mp4 *f, struct mp4_metadata *meta);
-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);
+int mp4_meta_update(struct mp4 *f);
+char *mp4_get_tag_value(const struct mp4 *f, const char *item);