commit ec4eddf679062301d5d3bf955bb5cf5a47f2ff72
author Glenn Kasten <gkasten@google.com> Thu Jun 18 15:38:15 2015 -0700
committer Glenn Kasten <gkasten@google.com> Fri Jun 19 13:12:40 2015 -0700
tree 4ce095870afc2678c42a76453d45378189b23f3a
parent 5e460fa8c9d9cc8ae3ffab4967e81f60698c3355

Add sf_writef_int to tiny libsndfile

Change-Id: I301781c079b0c6501a940dd7f6b782dd876d2899

audio_utils/tinysndfile.c

diff --git a/audio_utils/tinysndfile.c b/audio_utils/tinysndfile.c
index e35c75d..ca03a72 100644
--- a/audio_utils/tinysndfile.c
+++ b/audio_utils/tinysndfile.c
@@ -303,7 +303,7 @@
             (info->channels > 0 && info->channels <= 8) &&
             ((info->format & SF_FORMAT_TYPEMASK) == SF_FORMAT_WAV) &&
             (sub == SF_FORMAT_PCM_16 || sub == SF_FORMAT_PCM_U8 || sub == SF_FORMAT_FLOAT ||
-                sub == SF_FORMAT_PCM_24)
+                sub == SF_FORMAT_PCM_24 || sub == SF_FORMAT_PCM_32)
           )) {
         return NULL;
     }
@@ -343,6 +343,9 @@
     case SF_FORMAT_PCM_24:
         bitsPerSample = 24;
         break;
+    case SF_FORMAT_PCM_32:
+        bitsPerSample = 32;
+        break;
     default:    // not reachable
         bitsPerSample = 0;
         break;
@@ -626,3 +629,21 @@
     handle->remaining += actualFrames;
     return actualFrames;
 }
+
+sf_count_t sf_writef_int(SNDFILE *handle, const int *ptr, sf_count_t desiredFrames)
+{
+    if (handle == NULL || handle->mode != SFM_WRITE || ptr == NULL || desiredFrames <= 0)
+        return 0;
+    size_t desiredBytes = desiredFrames * handle->bytesPerFrame;
+    size_t actualBytes = 0;
+    switch (handle->info.format & SF_FORMAT_SUBMASK) {
+    case SF_FORMAT_PCM_32:
+        actualBytes = fwrite(ptr, sizeof(char), desiredBytes, handle->stream);
+        break;
+    default:    // transcoding from other formats not yet implemented
+        break;
+    }
+    size_t actualFrames = actualBytes / handle->bytesPerFrame;
+    handle->remaining += actualFrames;
+    return actualFrames;
+}