adjust buffering sizes to allow resampling of high defination audio codecs so…

adjust buffering sizes to allow resampling of high defination audio codecs so they can be transcoded to lower and higher levels

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11145 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_core_file.c

@@ -204,11 +204,12 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
 
 		if (fh->resampler->to_len < want || fh->resampler->to_len > orig_len) {
 			if (!fh->buffer) {
-				switch_buffer_create_dynamic(&fh->buffer, fh->resampler->to_len * 4, fh->resampler->to_len * 8, fh->resampler->to_len * 32);
+				int factor = fh->resampler->to_len * fh->samplerate / 1000;
+				switch_buffer_create_dynamic(&fh->buffer, factor, factor, 0);
 				switch_assert(fh->buffer);
 			}
 			if (!fh->dbuf) {
-				fh->dbuflen = fh->resampler->to_len * 10;
+				fh->dbuflen = want * 2;
 				fh->dbuf = switch_core_alloc(fh->memory_pool, fh->dbuflen);
 			}
 			switch_assert(fh->resampler->to_len <= fh->dbuflen);
@@ -217,7 +218,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_file_read(switch_file_handle_t *fh,
 			switch_buffer_write(fh->buffer, fh->dbuf, fh->resampler->to_len * 2);
 
 			if (switch_buffer_inuse(fh->buffer) < want * 2) {
-				*len = want - fh->resampler->to_len;
+				*len = want;
 				goto more;
 			}
 			*len = switch_buffer_read(fh->buffer, data, orig_len * 2) / 2;