1/*
2 * RIFF codec tags
3 * Copyright (c) 2000 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "libavcodec/avcodec.h"
23#include "avformat.h"
24#include "riff.h"
25
26/* Note: when encoding, the first matching tag is used, so order is
27   important if multiple tags possible for a given codec. */
28const AVCodecTag codec_bmp_tags[] = {
29    { CODEC_ID_H264,         MKTAG('H', '2', '6', '4') },
30    { CODEC_ID_H264,         MKTAG('h', '2', '6', '4') },
31    { CODEC_ID_H264,         MKTAG('X', '2', '6', '4') },
32    { CODEC_ID_H264,         MKTAG('x', '2', '6', '4') },
33    { CODEC_ID_H264,         MKTAG('a', 'v', 'c', '1') },
34    { CODEC_ID_H264,         MKTAG('V', 'S', 'S', 'H') },
35    { CODEC_ID_H263,         MKTAG('H', '2', '6', '3') },
36    { CODEC_ID_H263,         MKTAG('X', '2', '6', '3') },
37    { CODEC_ID_H263,         MKTAG('T', '2', '6', '3') },
38    { CODEC_ID_H263,         MKTAG('L', '2', '6', '3') },
39    { CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },
40    { CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },
41    { CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* intel h263 */
42    { CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },
43    { CODEC_ID_H263P,        MKTAG('U', '2', '6', '3') },
44    { CODEC_ID_H263P,        MKTAG('v', 'i', 'v', '1') },
45    { CODEC_ID_MPEG4,        MKTAG('F', 'M', 'P', '4') },
46    { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', 'X') },
47    { CODEC_ID_MPEG4,        MKTAG('D', 'X', '5', '0') },
48    { CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'D') },
49    { CODEC_ID_MPEG4,        MKTAG('M', 'P', '4', 'S') },
50    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },
51    { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) }, /* some broken avi use this */
52    { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', '1') },
53    { CODEC_ID_MPEG4,        MKTAG('B', 'L', 'Z', '0') },
54    { CODEC_ID_MPEG4,        MKTAG('m', 'p', '4', 'v') },
55    { CODEC_ID_MPEG4,        MKTAG('U', 'M', 'P', '4') },
56    { CODEC_ID_MPEG4,        MKTAG('W', 'V', '1', 'F') },
57    { CODEC_ID_MPEG4,        MKTAG('S', 'E', 'D', 'G') },
58    { CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },
59    { CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },
60    { CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },
61    { CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },
62    { CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },
63    { CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },
64    { CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },
65    { CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },
66    { CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },
67    { CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },
68    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },
69    { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },
70    { CODEC_ID_MPEG4,        MKTAG('H', 'D', 'X', '4') }, /* flipped video */
71    { CODEC_ID_MPEG4,        MKTAG('D', 'M', 'K', '2') },
72    { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'G', 'I') },
73    { CODEC_ID_MPEG4,        MKTAG('I', 'N', 'M', 'C') },
74    { CODEC_ID_MPEG4,        MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
75    { CODEC_ID_MPEG4,        MKTAG('E', 'M', '4', 'A') },
76    { CODEC_ID_MPEG4,        MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
77    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
78    { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', '4', '3') },
79    { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', 'G', '3') },
80    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '5') },
81    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '6') },
82    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '4') },
83    { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'V', 'X', '3') },
84    { CODEC_ID_MSMPEG4V3,    MKTAG('A', 'P', '4', '1') },
85    { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '1') },
86    { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '0') },
87    { CODEC_ID_MSMPEG4V2,    MKTAG('M', 'P', '4', '2') },
88    { CODEC_ID_MSMPEG4V2,    MKTAG('D', 'I', 'V', '2') },
89    { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', 'G', '4') },
90    { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', '4', '1') },
91    { CODEC_ID_WMV1,         MKTAG('W', 'M', 'V', '1') },
92    { CODEC_ID_WMV2,         MKTAG('W', 'M', 'V', '2') },
93    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'd') },
94    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', 'd') },
95    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'l') },
96    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '2', '5') },
97    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '5', '0') },
98    { CODEC_ID_DVVIDEO,      MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
99    { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', ' ') },
100    { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '1') },
101    { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '2') },
102    { CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', '2') },
103    { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'P', 'E', 'G') },
104    { CODEC_ID_MPEG1VIDEO,   MKTAG('P', 'I', 'M', '1') },
105    { CODEC_ID_MPEG2VIDEO,   MKTAG('P', 'I', 'M', '2') },
106    { CODEC_ID_MPEG1VIDEO,   MKTAG('V', 'C', 'R', '2') },
107    { CODEC_ID_MPEG1VIDEO,   MKTAG( 1 ,  0 ,  0 ,  16) },
108    { CODEC_ID_MPEG2VIDEO,   MKTAG( 2 ,  0 ,  0 ,  16) },
109    { CODEC_ID_MPEG2VIDEO,   MKTAG('D', 'V', 'R', ' ') },
110    { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'M', 'E', 'S') },
111    { CODEC_ID_MPEG2VIDEO,   MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
112    { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'P', 'G') },
113    { CODEC_ID_MJPEG,        MKTAG('L', 'J', 'P', 'G') },
114    { CODEC_ID_MJPEG,        MKTAG('d', 'm', 'b', '1') },
115    { CODEC_ID_LJPEG,        MKTAG('L', 'J', 'P', 'G') },
116    { CODEC_ID_MJPEG,        MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
117    { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
118    { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
119    { CODEC_ID_MJPEG,        MKTAG('j', 'p', 'e', 'g') },
120    { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'P', 'G') },
121    { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'R', 'n') },
122    { CODEC_ID_MJPEG,        MKTAG('A', 'C', 'D', 'V') },
123    { CODEC_ID_MJPEG,        MKTAG('Q', 'I', 'V', 'G') },
124    { CODEC_ID_MJPEG,        MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
125    { CODEC_ID_MJPEG,        MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
126    { CODEC_ID_HUFFYUV,      MKTAG('H', 'F', 'Y', 'U') },
127    { CODEC_ID_FFVHUFF,      MKTAG('F', 'F', 'V', 'H') },
128    { CODEC_ID_CYUV,         MKTAG('C', 'Y', 'U', 'V') },
129    { CODEC_ID_RAWVIDEO,     MKTAG( 0 ,  0 ,  0 ,  0 ) },
130    { CODEC_ID_RAWVIDEO,     MKTAG('I', '4', '2', '0') },
131    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'Y', '2') },
132    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', '2') },
133    { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '2') },
134    { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'V', 'Y') },
135    { CODEC_ID_RAWVIDEO,     MKTAG('I', 'Y', 'U', 'V') },
136    { CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', '0', '0') },
137    { CODEC_ID_RAWVIDEO,     MKTAG('H', 'D', 'Y', 'C') },
138    { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '1') },
139    { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '2') },
140    { CODEC_ID_INDEO4,       MKTAG('I', 'V', '4', '1') },
141    { CODEC_ID_INDEO5,       MKTAG('I', 'V', '5', '0') },
142    { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '1') },
143    { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '0') },
144    { CODEC_ID_VP5,          MKTAG('V', 'P', '5', '0') },
145    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '0') },
146    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '1') },
147    { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '2') },
148    { CODEC_ID_ASV1,         MKTAG('A', 'S', 'V', '1') },
149    { CODEC_ID_ASV2,         MKTAG('A', 'S', 'V', '2') },
150    { CODEC_ID_VCR1,         MKTAG('V', 'C', 'R', '1') },
151    { CODEC_ID_FFV1,         MKTAG('F', 'F', 'V', '1') },
152    { CODEC_ID_XAN_WC4,      MKTAG('X', 'x', 'a', 'n') },
153    { CODEC_ID_MIMIC,        MKTAG('L', 'M', '2', '0') },
154    { CODEC_ID_MSRLE,        MKTAG('m', 'r', 'l', 'e') },
155    { CODEC_ID_MSRLE,        MKTAG( 1 ,  0 ,  0 ,  0 ) },
156    { CODEC_ID_MSRLE,        MKTAG( 2 ,  0 ,  0 ,  0 ) },
157    { CODEC_ID_MSVIDEO1,     MKTAG('M', 'S', 'V', 'C') },
158    { CODEC_ID_MSVIDEO1,     MKTAG('m', 's', 'v', 'c') },
159    { CODEC_ID_MSVIDEO1,     MKTAG('C', 'R', 'A', 'M') },
160    { CODEC_ID_MSVIDEO1,     MKTAG('c', 'r', 'a', 'm') },
161    { CODEC_ID_MSVIDEO1,     MKTAG('W', 'H', 'A', 'M') },
162    { CODEC_ID_MSVIDEO1,     MKTAG('w', 'h', 'a', 'm') },
163    { CODEC_ID_CINEPAK,      MKTAG('c', 'v', 'i', 'd') },
164    { CODEC_ID_TRUEMOTION1,  MKTAG('D', 'U', 'C', 'K') },
165    { CODEC_ID_TRUEMOTION1,  MKTAG('P', 'V', 'E', 'Z') },
166    { CODEC_ID_MSZH,         MKTAG('M', 'S', 'Z', 'H') },
167    { CODEC_ID_ZLIB,         MKTAG('Z', 'L', 'I', 'B') },
168    { CODEC_ID_SNOW,         MKTAG('S', 'N', 'O', 'W') },
169    { CODEC_ID_4XM,          MKTAG('4', 'X', 'M', 'V') },
170    { CODEC_ID_FLV1,         MKTAG('F', 'L', 'V', '1') },
171    { CODEC_ID_FLASHSV,      MKTAG('F', 'S', 'V', '1') },
172    { CODEC_ID_VP6F,         MKTAG('V', 'P', '6', 'F') },
173    { CODEC_ID_SVQ1,         MKTAG('s', 'v', 'q', '1') },
174    { CODEC_ID_TSCC,         MKTAG('t', 's', 'c', 'c') },
175    { CODEC_ID_ULTI,         MKTAG('U', 'L', 'T', 'I') },
176    { CODEC_ID_VIXL,         MKTAG('V', 'I', 'X', 'L') },
177    { CODEC_ID_QPEG,         MKTAG('Q', 'P', 'E', 'G') },
178    { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '0') },
179    { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '1') },
180    { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', '3') },
181    { CODEC_ID_VC1,          MKTAG('W', 'V', 'C', '1') },
182    { CODEC_ID_VC1,          MKTAG('W', 'M', 'V', 'A') },
183    { CODEC_ID_LOCO,         MKTAG('L', 'O', 'C', 'O') },
184    { CODEC_ID_WNV1,         MKTAG('W', 'N', 'V', '1') },
185    { CODEC_ID_AASC,         MKTAG('A', 'A', 'S', 'C') },
186    { CODEC_ID_INDEO2,       MKTAG('R', 'T', '2', '1') },
187    { CODEC_ID_FRAPS,        MKTAG('F', 'P', 'S', '1') },
188    { CODEC_ID_THEORA,       MKTAG('t', 'h', 'e', 'o') },
189    { CODEC_ID_TRUEMOTION2,  MKTAG('T', 'M', '2', '0') },
190    { CODEC_ID_CSCD,         MKTAG('C', 'S', 'C', 'D') },
191    { CODEC_ID_ZMBV,         MKTAG('Z', 'M', 'B', 'V') },
192    { CODEC_ID_KMVC,         MKTAG('K', 'M', 'V', 'C') },
193    { CODEC_ID_CAVS,         MKTAG('C', 'A', 'V', 'S') },
194    { CODEC_ID_JPEG2000,     MKTAG('M', 'J', '2', 'C') },
195    { CODEC_ID_VMNC,         MKTAG('V', 'M', 'n', 'c') },
196    { CODEC_ID_TARGA,        MKTAG('t', 'g', 'a', ' ') },
197    { CODEC_ID_PNG,          MKTAG('M', 'P', 'N', 'G') },
198    { CODEC_ID_CLJR,         MKTAG('c', 'l', 'j', 'r') },
199    { CODEC_ID_DIRAC,        MKTAG('d', 'r', 'a', 'c') },
200    { CODEC_ID_RPZA,         MKTAG('a', 'z', 'p', 'r') },
201    { CODEC_ID_RPZA,         MKTAG('R', 'P', 'Z', 'A') },
202    { CODEC_ID_RPZA,         MKTAG('r', 'p', 'z', 'a') },
203    { CODEC_ID_SP5X,         MKTAG('S', 'P', '5', '4') },
204    { CODEC_ID_NONE,         0 }
205};
206
207const AVCodecTag codec_wav_tags[] = {
208    { CODEC_ID_PCM_S16LE,       0x0001 },
209    { CODEC_ID_PCM_U8,          0x0001 }, /* must come after s16le in this list */
210    { CODEC_ID_PCM_S24LE,       0x0001 },
211    { CODEC_ID_PCM_S32LE,       0x0001 },
212    { CODEC_ID_ADPCM_MS,        0x0002 },
213    { CODEC_ID_PCM_F32LE,       0x0003 },
214    { CODEC_ID_PCM_F64LE,       0x0003 }, /* must come after f32le in this list */
215    { CODEC_ID_PCM_ALAW,        0x0006 },
216    { CODEC_ID_PCM_MULAW,       0x0007 },
217    { CODEC_ID_WMAVOICE,        0x000A },
218    { CODEC_ID_ADPCM_IMA_WAV,   0x0011 },
219    { CODEC_ID_PCM_ZORK,        0x0011 }, /* must come after adpcm_ima_wav in this list */
220    { CODEC_ID_ADPCM_YAMAHA,    0x0020 },
221    { CODEC_ID_TRUESPEECH,      0x0022 },
222    { CODEC_ID_GSM_MS,          0x0031 },
223    { CODEC_ID_ADPCM_G726,      0x0045 },
224    { CODEC_ID_MP2,             0x0050 },
225    { CODEC_ID_MP3,             0x0055 },
226    { CODEC_ID_AMR_NB,          0x0057 },
227    { CODEC_ID_AMR_WB,          0x0058 },
228    { CODEC_ID_ADPCM_IMA_DK4,   0x0061 },  /* rogue format number */
229    { CODEC_ID_ADPCM_IMA_DK3,   0x0062 },  /* rogue format number */
230    { CODEC_ID_ADPCM_IMA_WAV,   0x0069 },
231    { CODEC_ID_VOXWARE,         0x0075 },
232    { CODEC_ID_AAC,             0x00ff },
233    { CODEC_ID_SIPR,            0x0130 },
234    { CODEC_ID_WMAV1,           0x0160 },
235    { CODEC_ID_WMAV2,           0x0161 },
236    { CODEC_ID_WMAPRO,          0x0162 },
237    { CODEC_ID_WMALOSSLESS,     0x0163 },
238    { CODEC_ID_ADPCM_CT,        0x0200 },
239    { CODEC_ID_ATRAC3,          0x0270 },
240    { CODEC_ID_IMC,             0x0401 },
241    { CODEC_ID_AC3,             0x2000 },
242    { CODEC_ID_DTS,             0x2001 },
243    { CODEC_ID_SONIC,           0x2048 },
244    { CODEC_ID_SONIC_LS,        0x2048 },
245    { CODEC_ID_AAC,             0x706d },
246    { CODEC_ID_AAC,             0x4143 },
247    { CODEC_ID_FLAC,            0xF1AC },
248    { CODEC_ID_ADPCM_SWF,       ('S'<<8)+'F' },
249    { CODEC_ID_VORBIS,          ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
250
251    /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
252    // for NuppelVideo (nuv.c)
253    { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
254    { CODEC_ID_MP3,       MKTAG('L', 'A', 'M', 'E') },
255    { CODEC_ID_MP3,       MKTAG('M', 'P', '3', ' ') },
256    { 0, 0 },
257};
258
259#if CONFIG_MUXERS
260int64_t start_tag(ByteIOContext *pb, const char *tag)
261{
262    put_tag(pb, tag);
263    put_le32(pb, 0);
264    return url_ftell(pb);
265}
266
267void end_tag(ByteIOContext *pb, int64_t start)
268{
269    int64_t pos;
270
271    pos = url_ftell(pb);
272    url_fseek(pb, start - 4, SEEK_SET);
273    put_le32(pb, (uint32_t)(pos - start));
274    url_fseek(pb, pos, SEEK_SET);
275}
276
277/* WAVEFORMATEX header */
278/* returns the size or -1 on error */
279int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
280{
281    int bps, blkalign, bytespersec;
282    int hdrsize = 18;
283
284    if(!enc->codec_tag || enc->codec_tag > 0xffff)
285        return -1;
286
287    put_le16(pb, enc->codec_tag);
288    put_le16(pb, enc->channels);
289    put_le32(pb, enc->sample_rate);
290    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
291        bps = 0;
292    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
293        bps = 4;
294    } else {
295        if (!(bps = av_get_bits_per_sample(enc->codec_id)))
296            bps = 16; // default to 16
297    }
298    if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
299        av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
300    }
301
302    if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_AC3) {
303        blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
304        //blkalign = 144 * enc->bit_rate/enc->sample_rate;
305    } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
306        blkalign = 1;
307    } else if (enc->block_align != 0) { /* specified by the codec */
308        blkalign = enc->block_align;
309    } else
310        blkalign = enc->channels*bps >> 3;
311    if (enc->codec_id == CODEC_ID_PCM_U8 ||
312        enc->codec_id == CODEC_ID_PCM_S24LE ||
313        enc->codec_id == CODEC_ID_PCM_S32LE ||
314        enc->codec_id == CODEC_ID_PCM_F32LE ||
315        enc->codec_id == CODEC_ID_PCM_F64LE ||
316        enc->codec_id == CODEC_ID_PCM_S16LE) {
317        bytespersec = enc->sample_rate * blkalign;
318    } else {
319        bytespersec = enc->bit_rate / 8;
320    }
321    put_le32(pb, bytespersec); /* bytes per second */
322    put_le16(pb, blkalign); /* block align */
323    put_le16(pb, bps); /* bits per sample */
324    if (enc->codec_id == CODEC_ID_MP3) {
325        put_le16(pb, 12); /* wav_extra_size */
326        hdrsize += 12;
327        put_le16(pb, 1); /* wID */
328        put_le32(pb, 2); /* fdwFlags */
329        put_le16(pb, 1152); /* nBlockSize */
330        put_le16(pb, 1); /* nFramesPerBlock */
331        put_le16(pb, 1393); /* nCodecDelay */
332    } else if (enc->codec_id == CODEC_ID_MP2) {
333        put_le16(pb, 22); /* wav_extra_size */
334        hdrsize += 22;
335        put_le16(pb, 2);  /* fwHeadLayer */
336        put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
337        put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
338        put_le16(pb, 0);  /* fwHeadModeExt */
339        put_le16(pb, 1);  /* wHeadEmphasis */
340        put_le16(pb, 16); /* fwHeadFlags */
341        put_le32(pb, 0);  /* dwPTSLow */
342        put_le32(pb, 0);  /* dwPTSHigh */
343    } else if (enc->codec_id == CODEC_ID_GSM_MS) {
344        put_le16(pb, 2); /* wav_extra_size */
345        hdrsize += 2;
346        put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
347    } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
348        put_le16(pb, 2); /* wav_extra_size */
349        hdrsize += 2;
350        put_le16(pb, enc->frame_size); /* wSamplesPerBlock */
351    } else if(enc->extradata_size){
352        put_le16(pb, enc->extradata_size);
353        put_buffer(pb, enc->extradata, enc->extradata_size);
354        hdrsize += enc->extradata_size;
355        if(hdrsize&1){
356            hdrsize++;
357            put_byte(pb, 0);
358        }
359    } else {
360        hdrsize -= 2;
361    }
362
363    return hdrsize;
364}
365
366/* BITMAPINFOHEADER header */
367void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
368{
369    put_le32(pb, 40 + enc->extradata_size); /* size */
370    put_le32(pb, enc->width);
371    //We always store RGB TopDown
372    put_le32(pb, enc->codec_tag ? enc->height : -enc->height);
373    put_le16(pb, 1); /* planes */
374
375    put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
376    /* compression type */
377    put_le32(pb, enc->codec_tag);
378    put_le32(pb, enc->width * enc->height * 3);
379    put_le32(pb, 0);
380    put_le32(pb, 0);
381    put_le32(pb, 0);
382    put_le32(pb, 0);
383
384    put_buffer(pb, enc->extradata, enc->extradata_size);
385
386    if (enc->extradata_size & 1)
387        put_byte(pb, 0);
388}
389#endif //CONFIG_MUXERS
390
391#if CONFIG_DEMUXERS
392/* We could be given one of the three possible structures here:
393 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
394 * is an expansion of the previous one with the fields added
395 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
396 * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
397 * an openended structure.
398 */
399void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
400{
401    int id;
402
403    id = get_le16(pb);
404    codec->codec_type = CODEC_TYPE_AUDIO;
405    codec->codec_tag = id;
406    codec->channels = get_le16(pb);
407    codec->sample_rate = get_le32(pb);
408    codec->bit_rate = get_le32(pb) * 8;
409    codec->block_align = get_le16(pb);
410    if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
411        codec->bits_per_coded_sample = 8;
412    }else
413        codec->bits_per_coded_sample = get_le16(pb);
414    if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */
415        int cbSize = get_le16(pb); /* cbSize */
416        size -= 18;
417        cbSize = FFMIN(size, cbSize);
418        if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
419            codec->bits_per_coded_sample = get_le16(pb);
420            codec->channel_layout = get_le32(pb); /* dwChannelMask */
421            id = get_le32(pb); /* 4 first bytes of GUID */
422            url_fskip(pb, 12); /* skip end of GUID */
423            cbSize -= 22;
424            size -= 22;
425        }
426        codec->extradata_size = cbSize;
427        if (cbSize > 0) {
428            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
429            get_buffer(pb, codec->extradata, codec->extradata_size);
430            size -= cbSize;
431        }
432
433        /* It is possible for the chunk to contain garbage at the end */
434        if (size > 0)
435            url_fskip(pb, size);
436    }
437    codec->codec_id = wav_codec_get_id(id, codec->bits_per_coded_sample);
438}
439
440
441enum CodecID wav_codec_get_id(unsigned int tag, int bps)
442{
443    enum CodecID id;
444    id = codec_get_id(codec_wav_tags, tag);
445    if (id <= 0)
446        return id;
447    /* handle specific u8 codec */
448    if (id == CODEC_ID_PCM_S16LE && bps == 8)
449        id = CODEC_ID_PCM_U8;
450    if (id == CODEC_ID_PCM_S16LE && bps == 24)
451        id = CODEC_ID_PCM_S24LE;
452    if (id == CODEC_ID_PCM_S16LE && bps == 32)
453        id = CODEC_ID_PCM_S32LE;
454    if (id == CODEC_ID_PCM_F32LE && bps == 64)
455        id = CODEC_ID_PCM_F64LE;
456    if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
457        id = CODEC_ID_PCM_ZORK;
458    return id;
459}
460#endif // CONFIG_DEMUXERS
461
462void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
463{
464    int gcd;
465
466    *au_ssize= stream->block_align;
467    if(stream->frame_size && stream->sample_rate){
468        *au_scale=stream->frame_size;
469        *au_rate= stream->sample_rate;
470    }else if(stream->codec_type == CODEC_TYPE_VIDEO){
471        *au_scale= stream->time_base.num;
472        *au_rate = stream->time_base.den;
473    }else{
474        *au_scale= stream->block_align ? stream->block_align*8 : 8;
475        *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
476    }
477    gcd= av_gcd(*au_scale, *au_rate);
478    *au_scale /= gcd;
479    *au_rate /= gcd;
480}
481