mood: Make "duration" a new keyword for the mood grammar.

[paraslash.git] / mp.c

diff --git a/mp.c b/mp.c
index 416b4f92065ef79716e7f966c3102e995071a112..b5fa9cacaa6dcf9f3e2ef6f99fd025757f12097c 100644 (file)
--- 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.
  *