2 * DCA compatible decoder data
3 * Copyright (C) 2004 Gildas Bazin
4 * Copyright (C) 2004 Benjamin Zores
5 * Copyright (C) 2006 Benjamin Larsson
6 * Copyright (C) 2007 Konstantin Shishkov
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/error.h"
33 const uint32_t avpriv_dca_sample_rates
[16] = {
34 0, 8000, 16000, 32000, 0, 0, 11025, 22050, 44100, 0, 0,
35 12000, 24000, 48000, 96000, 192000
38 int avpriv_dca_convert_bitstream(const uint8_t *src
, int src_size
, uint8_t *dst
,
43 const uint16_t *ssrc
= (const uint16_t *) src
;
44 uint16_t *sdst
= (uint16_t *) dst
;
47 if ((unsigned) src_size
> (unsigned) max_size
)
52 case DCA_MARKER_RAW_BE
:
53 memcpy(dst
, src
, src_size
);
55 case DCA_MARKER_RAW_LE
:
56 for (i
= 0; i
< (src_size
+ 1) >> 1; i
++)
57 *sdst
++ = av_bswap16(*ssrc
++);
59 case DCA_MARKER_14B_BE
:
60 case DCA_MARKER_14B_LE
:
61 init_put_bits(&pb
, dst
, max_size
);
62 for (i
= 0; i
< (src_size
+ 1) >> 1; i
++, src
+= 2) {
63 tmp
= ((mrk
== DCA_MARKER_14B_BE
) ? AV_RB16(src
) : AV_RL16(src
)) & 0x3FFF;
64 put_bits(&pb
, 14, tmp
);
67 return (put_bits_count(&pb
) + 7) >> 3;
69 return AVERROR_INVALIDDATA
;