2 * common code shared by all WMA variants
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/attributes.h"
22 #include "wma_common.h"
25 *@brief Get the samples per frame for this stream.
26 *@param sample_rate output sample_rate
27 *@param version wma version
28 *@param decode_flags codec compression features
29 *@return log2 of the number of output samples per frame
31 av_cold int ff_wma_get_frame_len_bits(int sample_rate, int version,
32 unsigned int decode_flags)
37 if (sample_rate <= 16000) {
39 } else if (sample_rate <= 22050 ||
40 (sample_rate <= 32000 && version == 1)) {
42 } else if (sample_rate <= 48000 || version < 3) {
44 } else if (sample_rate <= 96000) {
51 int tmp = decode_flags & 0x6;
54 } else if (tmp == 0x4) {
56 } else if (tmp == 0x6) {
61 return frame_len_bits;