mediacodec: Pass the aspect ratio values through from the packetizer

There is no way in the MediaCodec API for the decoder to signal
these values to the caller, at least none that is publicly
documented.
Signed-off-by: Martin Storsjö <martin@martin.st>

modules/codec/omxil/android_mediacodec.c

@@ -692,6 +692,15 @@ static picture_t *DecodeVideo(decoder_t *p_dec, block_t **pp_block)
         return NULL;
     }
 
+    /* Use the aspect ratio provided by the input (ie read from packetizer).
+     * Don't check the current value of the aspect ratio in fmt_out, since we
+     * want to allow changes in it to propagate. */
+    if (p_dec->fmt_in.video.i_sar_num != 0 && p_dec->fmt_in.video.i_sar_den != 0)
+    {
+        p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
+        p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
+    }
+
     jlong timeout = 0;
     const int max_polling_attempts = 50;
     int attempts = 0;