webmdec: Fix return values for webm_read_frame

Fix return values for webm_read_frame so that we can distinguish between
error and end of stream. 0 - Success, 1 - End of stream, -1 error.

Change-Id: Ic35d0c7d7a166e027711a3d2300ecdda25a5d0cc

1 files changed, 5 insertions, 0 deletions

diff --git a/webmdec.h b/webmdec.h
index fa5a52eaf..108c6ade9 100644
--- a/webmdec.h
+++ b/webmdec.h
@@ -31,6 +31,11 @@ struct WebmInputContext {
 int file_is_webm(struct WebmInputContext *webm_ctx,
                  struct VpxInputContext *vpx_ctx);
 
+/* Reads a WebM video frame. Return values:
+ *   0 - Success
+ *   1 - End of File
+ *  -1 - Error
+ */
 int webm_read_frame(struct WebmInputContext *webm_ctx,
                     uint8_t **buffer,
                     size_t *bytes_in_buffer,