[FFmpeg-devel] [PATCH v2 4/5] avformat/chromaprint: Fix writing raw fingerprint

[Andriy Gelman]

From: Andriy Gelman <andriy.gelman at gmail.com>

The pointer fp after the call to chromaprint_get_raw_fingerpoint() points to an array of uint32_t whereas the current code assumed just a char stream. Thus when writing the raw fingerprint, the output would be truncated by a factor of 4. This is fixed in the commit.

For reference the declaration of the function from chromaprint.h is:
int chromaprint_get_raw_fingerprint(ChromaprintContext *ctx, uint32_t **fingerprint, int *size);
---
 libavformat/chromaprint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/chromaprint.c b/libavformat/chromaprint.c
index a4c0b97d99..faa92ca0db 100644
--- a/libavformat/chromaprint.c
+++ b/libavformat/chromaprint.c
@@ -136,7 +136,7 @@ static int write_trailer(AVFormatContext *s)
 
     switch (cpr->fp_format) {
     case FINGERPRINT_RAW:
-        avio_write(pb, fp, size);
+        avio_write(pb, fp, size * 4); //fp points to array of uint32_t
         break;
     case FINGERPRINT_COMPRESSED:
     case FINGERPRINT_BASE64:
-- 
2.23.0