X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=mp.c;h=c537e72998d2ae46e0e9dbaa55175eaebf14f07f;hb=d440a71683940a58747de6dc32643db452d9cf54;hp=416b4f92065ef79716e7f966c3102e995071a112;hpb=5950bc81d20b5b6f9ddf1b34df3141cd542d2c6a;p=paraslash.git

diff --git a/mp.c b/mp.c
index 416b4f92..c537e729 100644
--- a/mp.c
+++ b/mp.c
@@ -389,6 +389,27 @@ MP_AFHI(frequency)
 MP_AFHI(channels)
 /** \endcond */
 
+/**
+ * Return the duration of the audio file from the afh info structure.
+ *
+ * \param ctx See \ref mp_path().
+ *
+ * The duration is computed by multiplying the number of chunks and the
+ * duration of one chunk.
+ *
+ * \return The approximate number of milliseconds.
+ */
+int64_t mp_duration(struct mp_context *ctx)
+{
+	struct timeval tmp;
+	int ret = get_afhi(ctx);
+
+	if (ret < 0)
+		return 0;
+	tv_scale(ctx->afhi.chunks_total, &ctx->afhi.chunk_tv, &tmp);
+	return tv2ms(&tmp);
+}
+
 /**
  * Define a function which extracts and returns the value of a meta tag.
  *
@@ -510,6 +531,7 @@ int mp_init(const char *definition, int nbytes, struct mp_context **result,
 	mp_yy_delete_buffer(buffer_state, scanner);
 	mp_yylex_destroy(scanner);
 	if (ctx->errmsg) { /* parse error */
+		mp_free_ast(ctx->ast);
 		if (errmsg)
 			*errmsg = ctx->errmsg;
 		else