00001 /* 00002 * RIFF codec tags 00003 * Copyright (c) 2000 Fabrice Bellard 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00022 #include "libavcodec/avcodec.h" 00023 #include "avformat.h" 00024 #include "riff.h" 00025 00026 /* Note: when encoding, the first matching tag is used, so order is 00027 important if multiple tags possible for a given codec. */ 00028 const AVCodecTag codec_bmp_tags[] = { 00029 { CODEC_ID_H264, MKTAG('H', '2', '6', '4') }, 00030 { CODEC_ID_H264, MKTAG('h', '2', '6', '4') }, 00031 { CODEC_ID_H264, MKTAG('X', '2', '6', '4') }, 00032 { CODEC_ID_H264, MKTAG('x', '2', '6', '4') }, 00033 { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, 00034 { CODEC_ID_H264, MKTAG('V', 'S', 'S', 'H') }, 00035 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') }, 00036 { CODEC_ID_H263, MKTAG('X', '2', '6', '3') }, 00037 { CODEC_ID_H263, MKTAG('T', '2', '6', '3') }, 00038 { CODEC_ID_H263, MKTAG('L', '2', '6', '3') }, 00039 { CODEC_ID_H263, MKTAG('V', 'X', '1', 'K') }, 00040 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') }, 00041 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */ 00042 { CODEC_ID_H261, MKTAG('H', '2', '6', '1') }, 00043 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') }, 00044 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') }, 00045 { CODEC_ID_MPEG4, MKTAG('F', 'M', 'P', '4') }, 00046 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, 00047 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0') }, 00048 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') }, 00049 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') }, 00050 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') }, 00051 { CODEC_ID_MPEG4, MKTAG( 4 , 0 , 0 , 0 ) }, /* some broken avi use this */ 00052 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') }, 00053 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') }, 00054 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') }, 00055 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') }, 00056 { CODEC_ID_MPEG4, MKTAG('W', 'V', '1', 'F') }, 00057 { CODEC_ID_MPEG4, MKTAG('S', 'E', 'D', 'G') }, 00058 { CODEC_ID_MPEG4, MKTAG('R', 'M', 'P', '4') }, 00059 { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, 00060 { CODEC_ID_MPEG4, MKTAG('F', 'F', 'D', 'S') }, 00061 { CODEC_ID_MPEG4, MKTAG('F', 'V', 'F', 'W') }, 00062 { CODEC_ID_MPEG4, MKTAG('D', 'C', 'O', 'D') }, 00063 { CODEC_ID_MPEG4, MKTAG('M', 'V', 'X', 'M') }, 00064 { CODEC_ID_MPEG4, MKTAG('P', 'M', '4', 'V') }, 00065 { CODEC_ID_MPEG4, MKTAG('S', 'M', 'P', '4') }, 00066 { CODEC_ID_MPEG4, MKTAG('D', 'X', 'G', 'M') }, 00067 { CODEC_ID_MPEG4, MKTAG('V', 'I', 'D', 'M') }, 00068 { CODEC_ID_MPEG4, MKTAG('M', '4', 'T', '3') }, 00069 { CODEC_ID_MPEG4, MKTAG('G', 'E', 'O', 'X') }, 00070 { CODEC_ID_MPEG4, MKTAG('H', 'D', 'X', '4') }, /* flipped video */ 00071 { CODEC_ID_MPEG4, MKTAG('D', 'M', 'K', '2') }, 00072 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'G', 'I') }, 00073 { CODEC_ID_MPEG4, MKTAG('I', 'N', 'M', 'C') }, 00074 { CODEC_ID_MPEG4, MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */ 00075 { CODEC_ID_MPEG4, MKTAG('E', 'M', '4', 'A') }, 00076 { CODEC_ID_MPEG4, MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */ 00077 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */ 00078 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 00079 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') }, 00080 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') }, 00081 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') }, 00082 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') }, 00083 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'V', 'X', '3') }, 00084 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') }, 00085 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') }, 00086 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') }, 00087 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 00088 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') }, 00089 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 00090 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') }, 00091 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 00092 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 00093 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 00094 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 00095 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 00096 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') }, 00097 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', '0') }, 00098 { CODEC_ID_DVVIDEO, MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */ 00099 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, 00100 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 00101 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 00102 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') }, 00103 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'P', 'E', 'G') }, 00104 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 00105 { CODEC_ID_MPEG2VIDEO, MKTAG('P', 'I', 'M', '2') }, 00106 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') }, 00107 { CODEC_ID_MPEG1VIDEO, MKTAG( 1 , 0 , 0 , 16) }, 00108 { CODEC_ID_MPEG2VIDEO, MKTAG( 2 , 0 , 0 , 16) }, 00109 { CODEC_ID_MPEG2VIDEO, MKTAG('D', 'V', 'R', ' ') }, 00110 { CODEC_ID_MPEG2VIDEO, MKTAG('M', 'M', 'E', 'S') }, 00111 { CODEC_ID_MPEG2VIDEO, MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */ 00112 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') }, 00113 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') }, 00114 { CODEC_ID_MJPEG, MKTAG('d', 'm', 'b', '1') }, 00115 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') }, 00116 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */ 00117 { CODEC_ID_JPEGLS, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */ 00118 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */ 00119 { CODEC_ID_MJPEG, MKTAG('j', 'p', 'e', 'g') }, 00120 { CODEC_ID_MJPEG, MKTAG('I', 'J', 'P', 'G') }, 00121 { CODEC_ID_MJPEG, MKTAG('A', 'V', 'R', 'n') }, 00122 { CODEC_ID_MJPEG, MKTAG('A', 'C', 'D', 'V') }, 00123 { CODEC_ID_MJPEG, MKTAG('Q', 'I', 'V', 'G') }, 00124 { CODEC_ID_MJPEG, MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */ 00125 { CODEC_ID_MJPEG, MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */ 00126 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') }, 00127 { CODEC_ID_FFVHUFF, MKTAG('F', 'F', 'V', 'H') }, 00128 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') }, 00129 { CODEC_ID_RAWVIDEO, MKTAG( 0 , 0 , 0 , 0 ) }, 00130 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') }, 00131 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'U', 'Y', '2') }, 00132 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') }, 00133 { CODEC_ID_RAWVIDEO, MKTAG('Y', 'V', '1', '2') }, 00134 { CODEC_ID_RAWVIDEO, MKTAG('U', 'Y', 'V', 'Y') }, 00135 { CODEC_ID_RAWVIDEO, MKTAG('I', 'Y', 'U', 'V') }, 00136 { CODEC_ID_RAWVIDEO, MKTAG('Y', '8', '0', '0') }, 00137 { CODEC_ID_RAWVIDEO, MKTAG('H', 'D', 'Y', 'C') }, 00138 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') }, 00139 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') }, 00140 { CODEC_ID_INDEO4, MKTAG('I', 'V', '4', '1') }, 00141 { CODEC_ID_INDEO5, MKTAG('I', 'V', '5', '0') }, 00142 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') }, 00143 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') }, 00144 { CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') }, 00145 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') }, 00146 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') }, 00147 { CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') }, 00148 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') }, 00149 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') }, 00150 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') }, 00151 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') }, 00152 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') }, 00153 { CODEC_ID_MIMIC, MKTAG('L', 'M', '2', '0') }, 00154 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') }, 00155 { CODEC_ID_MSRLE, MKTAG( 1 , 0 , 0 , 0 ) }, 00156 { CODEC_ID_MSRLE, MKTAG( 2 , 0 , 0 , 0 ) }, 00157 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') }, 00158 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') }, 00159 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') }, 00160 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') }, 00161 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') }, 00162 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') }, 00163 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, 00164 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') }, 00165 { CODEC_ID_TRUEMOTION1, MKTAG('P', 'V', 'E', 'Z') }, 00166 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') }, 00167 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') }, 00168 { CODEC_ID_SNOW, MKTAG('S', 'N', 'O', 'W') }, 00169 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') }, 00170 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') }, 00171 { CODEC_ID_FLASHSV, MKTAG('F', 'S', 'V', '1') }, 00172 { CODEC_ID_VP6F, MKTAG('V', 'P', '6', 'F') }, 00173 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, 00174 { CODEC_ID_TSCC, MKTAG('t', 's', 'c', 'c') }, 00175 { CODEC_ID_ULTI, MKTAG('U', 'L', 'T', 'I') }, 00176 { CODEC_ID_VIXL, MKTAG('V', 'I', 'X', 'L') }, 00177 { CODEC_ID_QPEG, MKTAG('Q', 'P', 'E', 'G') }, 00178 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '0') }, 00179 { CODEC_ID_QPEG, MKTAG('Q', '1', '.', '1') }, 00180 { CODEC_ID_WMV3, MKTAG('W', 'M', 'V', '3') }, 00181 { CODEC_ID_VC1, MKTAG('W', 'V', 'C', '1') }, 00182 { CODEC_ID_VC1, MKTAG('W', 'M', 'V', 'A') }, 00183 { CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') }, 00184 { CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') }, 00185 { CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') }, 00186 { CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') }, 00187 { CODEC_ID_FRAPS, MKTAG('F', 'P', 'S', '1') }, 00188 { CODEC_ID_THEORA, MKTAG('t', 'h', 'e', 'o') }, 00189 { CODEC_ID_TRUEMOTION2, MKTAG('T', 'M', '2', '0') }, 00190 { CODEC_ID_CSCD, MKTAG('C', 'S', 'C', 'D') }, 00191 { CODEC_ID_ZMBV, MKTAG('Z', 'M', 'B', 'V') }, 00192 { CODEC_ID_KMVC, MKTAG('K', 'M', 'V', 'C') }, 00193 { CODEC_ID_CAVS, MKTAG('C', 'A', 'V', 'S') }, 00194 { CODEC_ID_JPEG2000, MKTAG('M', 'J', '2', 'C') }, 00195 { CODEC_ID_VMNC, MKTAG('V', 'M', 'n', 'c') }, 00196 { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, 00197 { CODEC_ID_PNG, MKTAG('M', 'P', 'N', 'G') }, 00198 { CODEC_ID_CLJR, MKTAG('c', 'l', 'j', 'r') }, 00199 { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') }, 00200 { CODEC_ID_RPZA, MKTAG('a', 'z', 'p', 'r') }, 00201 { CODEC_ID_RPZA, MKTAG('R', 'P', 'Z', 'A') }, 00202 { CODEC_ID_RPZA, MKTAG('r', 'p', 'z', 'a') }, 00203 { CODEC_ID_SP5X, MKTAG('S', 'P', '5', '4') }, 00204 { CODEC_ID_NONE, 0 } 00205 }; 00206 00207 const AVCodecTag codec_wav_tags[] = { 00208 { CODEC_ID_PCM_S16LE, 0x0001 }, 00209 { CODEC_ID_PCM_U8, 0x0001 }, /* must come after s16le in this list */ 00210 { CODEC_ID_PCM_S24LE, 0x0001 }, 00211 { CODEC_ID_PCM_S32LE, 0x0001 }, 00212 { CODEC_ID_ADPCM_MS, 0x0002 }, 00213 { CODEC_ID_PCM_F32LE, 0x0003 }, 00214 { CODEC_ID_PCM_F64LE, 0x0003 }, /* must come after f32le in this list */ 00215 { CODEC_ID_PCM_ALAW, 0x0006 }, 00216 { CODEC_ID_PCM_MULAW, 0x0007 }, 00217 { CODEC_ID_WMAVOICE, 0x000A }, 00218 { CODEC_ID_ADPCM_IMA_WAV, 0x0011 }, 00219 { CODEC_ID_PCM_ZORK, 0x0011 }, /* must come after adpcm_ima_wav in this list */ 00220 { CODEC_ID_ADPCM_YAMAHA, 0x0020 }, 00221 { CODEC_ID_TRUESPEECH, 0x0022 }, 00222 { CODEC_ID_GSM_MS, 0x0031 }, 00223 { CODEC_ID_ADPCM_G726, 0x0045 }, 00224 { CODEC_ID_MP2, 0x0050 }, 00225 { CODEC_ID_MP3, 0x0055 }, 00226 { CODEC_ID_AMR_NB, 0x0057 }, 00227 { CODEC_ID_AMR_WB, 0x0058 }, 00228 { CODEC_ID_ADPCM_IMA_DK4, 0x0061 }, /* rogue format number */ 00229 { CODEC_ID_ADPCM_IMA_DK3, 0x0062 }, /* rogue format number */ 00230 { CODEC_ID_ADPCM_IMA_WAV, 0x0069 }, 00231 { CODEC_ID_VOXWARE, 0x0075 }, 00232 { CODEC_ID_AAC, 0x00ff }, 00233 { CODEC_ID_SIPR, 0x0130 }, 00234 { CODEC_ID_WMAV1, 0x0160 }, 00235 { CODEC_ID_WMAV2, 0x0161 }, 00236 { CODEC_ID_WMAPRO, 0x0162 }, 00237 { CODEC_ID_WMALOSSLESS, 0x0163 }, 00238 { CODEC_ID_ADPCM_CT, 0x0200 }, 00239 { CODEC_ID_ATRAC3, 0x0270 }, 00240 { CODEC_ID_IMC, 0x0401 }, 00241 { CODEC_ID_AC3, 0x2000 }, 00242 { CODEC_ID_DTS, 0x2001 }, 00243 { CODEC_ID_SONIC, 0x2048 }, 00244 { CODEC_ID_SONIC_LS, 0x2048 }, 00245 { CODEC_ID_AAC, 0x706d }, 00246 { CODEC_ID_AAC, 0x4143 }, 00247 { CODEC_ID_FLAC, 0xF1AC }, 00248 { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' }, 00249 { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id? 00250 00251 /* FIXME: All of the IDs below are not 16 bit and thus illegal. */ 00252 // for NuppelVideo (nuv.c) 00253 { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') }, 00254 { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') }, 00255 { CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') }, 00256 { 0, 0 }, 00257 }; 00258 00259 #if CONFIG_MUXERS 00260 int64_t start_tag(ByteIOContext *pb, const char *tag) 00261 { 00262 put_tag(pb, tag); 00263 put_le32(pb, 0); 00264 return url_ftell(pb); 00265 } 00266 00267 void end_tag(ByteIOContext *pb, int64_t start) 00268 { 00269 int64_t pos; 00270 00271 pos = url_ftell(pb); 00272 url_fseek(pb, start - 4, SEEK_SET); 00273 put_le32(pb, (uint32_t)(pos - start)); 00274 url_fseek(pb, pos, SEEK_SET); 00275 } 00276 00277 /* WAVEFORMATEX header */ 00278 /* returns the size or -1 on error */ 00279 int put_wav_header(ByteIOContext *pb, AVCodecContext *enc) 00280 { 00281 int bps, blkalign, bytespersec; 00282 int hdrsize = 18; 00283 00284 if(!enc->codec_tag || enc->codec_tag > 0xffff) 00285 return -1; 00286 00287 put_le16(pb, enc->codec_tag); 00288 put_le16(pb, enc->channels); 00289 put_le32(pb, enc->sample_rate); 00290 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) { 00291 bps = 0; 00292 } 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) { // 00293 bps = 4; 00294 } else { 00295 if (!(bps = av_get_bits_per_sample(enc->codec_id))) 00296 bps = 16; // default to 16 00297 } 00298 if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){ 00299 av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps); 00300 } 00301 00302 if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_AC3) { 00303 blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly 00304 //blkalign = 144 * enc->bit_rate/enc->sample_rate; 00305 } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { // 00306 blkalign = 1; 00307 } else if (enc->block_align != 0) { /* specified by the codec */ 00308 blkalign = enc->block_align; 00309 } else 00310 blkalign = enc->channels*bps >> 3; 00311 if (enc->codec_id == CODEC_ID_PCM_U8 || 00312 enc->codec_id == CODEC_ID_PCM_S24LE || 00313 enc->codec_id == CODEC_ID_PCM_S32LE || 00314 enc->codec_id == CODEC_ID_PCM_F32LE || 00315 enc->codec_id == CODEC_ID_PCM_F64LE || 00316 enc->codec_id == CODEC_ID_PCM_S16LE) { 00317 bytespersec = enc->sample_rate * blkalign; 00318 } else { 00319 bytespersec = enc->bit_rate / 8; 00320 } 00321 put_le32(pb, bytespersec); /* bytes per second */ 00322 put_le16(pb, blkalign); /* block align */ 00323 put_le16(pb, bps); /* bits per sample */ 00324 if (enc->codec_id == CODEC_ID_MP3) { 00325 put_le16(pb, 12); /* wav_extra_size */ 00326 hdrsize += 12; 00327 put_le16(pb, 1); /* wID */ 00328 put_le32(pb, 2); /* fdwFlags */ 00329 put_le16(pb, 1152); /* nBlockSize */ 00330 put_le16(pb, 1); /* nFramesPerBlock */ 00331 put_le16(pb, 1393); /* nCodecDelay */ 00332 } else if (enc->codec_id == CODEC_ID_MP2) { 00333 put_le16(pb, 22); /* wav_extra_size */ 00334 hdrsize += 22; 00335 put_le16(pb, 2); /* fwHeadLayer */ 00336 put_le32(pb, enc->bit_rate); /* dwHeadBitrate */ 00337 put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */ 00338 put_le16(pb, 0); /* fwHeadModeExt */ 00339 put_le16(pb, 1); /* wHeadEmphasis */ 00340 put_le16(pb, 16); /* fwHeadFlags */ 00341 put_le32(pb, 0); /* dwPTSLow */ 00342 put_le32(pb, 0); /* dwPTSHigh */ 00343 } else if (enc->codec_id == CODEC_ID_GSM_MS) { 00344 put_le16(pb, 2); /* wav_extra_size */ 00345 hdrsize += 2; 00346 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */ 00347 } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) { 00348 put_le16(pb, 2); /* wav_extra_size */ 00349 hdrsize += 2; 00350 put_le16(pb, enc->frame_size); /* wSamplesPerBlock */ 00351 } else if(enc->extradata_size){ 00352 put_le16(pb, enc->extradata_size); 00353 put_buffer(pb, enc->extradata, enc->extradata_size); 00354 hdrsize += enc->extradata_size; 00355 if(hdrsize&1){ 00356 hdrsize++; 00357 put_byte(pb, 0); 00358 } 00359 } else { 00360 hdrsize -= 2; 00361 } 00362 00363 return hdrsize; 00364 } 00365 00366 /* BITMAPINFOHEADER header */ 00367 void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf) 00368 { 00369 put_le32(pb, 40 + enc->extradata_size); /* size */ 00370 put_le32(pb, enc->width); 00371 //We always store RGB TopDown 00372 put_le32(pb, enc->codec_tag ? enc->height : -enc->height); 00373 put_le16(pb, 1); /* planes */ 00374 00375 put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */ 00376 /* compression type */ 00377 put_le32(pb, enc->codec_tag); 00378 put_le32(pb, enc->width * enc->height * 3); 00379 put_le32(pb, 0); 00380 put_le32(pb, 0); 00381 put_le32(pb, 0); 00382 put_le32(pb, 0); 00383 00384 put_buffer(pb, enc->extradata, enc->extradata_size); 00385 00386 if (enc->extradata_size & 1) 00387 put_byte(pb, 0); 00388 } 00389 #endif //CONFIG_MUXERS 00390 00391 #if CONFIG_DEMUXERS 00392 /* We could be given one of the three possible structures here: 00393 * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure 00394 * is an expansion of the previous one with the fields added 00395 * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and 00396 * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself 00397 * an openended structure. 00398 */ 00399 void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size) 00400 { 00401 int id; 00402 00403 id = get_le16(pb); 00404 codec->codec_type = CODEC_TYPE_AUDIO; 00405 codec->codec_tag = id; 00406 codec->channels = get_le16(pb); 00407 codec->sample_rate = get_le32(pb); 00408 codec->bit_rate = get_le32(pb) * 8; 00409 codec->block_align = get_le16(pb); 00410 if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */ 00411 codec->bits_per_coded_sample = 8; 00412 }else 00413 codec->bits_per_coded_sample = get_le16(pb); 00414 if (size >= 18) { /* We're obviously dealing with WAVEFORMATEX */ 00415 int cbSize = get_le16(pb); /* cbSize */ 00416 size -= 18; 00417 cbSize = FFMIN(size, cbSize); 00418 if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */ 00419 codec->bits_per_coded_sample = get_le16(pb); 00420 codec->channel_layout = get_le32(pb); /* dwChannelMask */ 00421 id = get_le32(pb); /* 4 first bytes of GUID */ 00422 url_fskip(pb, 12); /* skip end of GUID */ 00423 cbSize -= 22; 00424 size -= 22; 00425 } 00426 codec->extradata_size = cbSize; 00427 if (cbSize > 0) { 00428 codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); 00429 get_buffer(pb, codec->extradata, codec->extradata_size); 00430 size -= cbSize; 00431 } 00432 00433 /* It is possible for the chunk to contain garbage at the end */ 00434 if (size > 0) 00435 url_fskip(pb, size); 00436 } 00437 codec->codec_id = wav_codec_get_id(id, codec->bits_per_coded_sample); 00438 } 00439 00440 00441 enum CodecID wav_codec_get_id(unsigned int tag, int bps) 00442 { 00443 enum CodecID id; 00444 id = codec_get_id(codec_wav_tags, tag); 00445 if (id <= 0) 00446 return id; 00447 /* handle specific u8 codec */ 00448 if (id == CODEC_ID_PCM_S16LE && bps == 8) 00449 id = CODEC_ID_PCM_U8; 00450 if (id == CODEC_ID_PCM_S16LE && bps == 24) 00451 id = CODEC_ID_PCM_S24LE; 00452 if (id == CODEC_ID_PCM_S16LE && bps == 32) 00453 id = CODEC_ID_PCM_S32LE; 00454 if (id == CODEC_ID_PCM_F32LE && bps == 64) 00455 id = CODEC_ID_PCM_F64LE; 00456 if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8) 00457 id = CODEC_ID_PCM_ZORK; 00458 return id; 00459 } 00460 #endif // CONFIG_DEMUXERS 00461 00462 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale) 00463 { 00464 int gcd; 00465 00466 *au_ssize= stream->block_align; 00467 if(stream->frame_size && stream->sample_rate){ 00468 *au_scale=stream->frame_size; 00469 *au_rate= stream->sample_rate; 00470 }else if(stream->codec_type == CODEC_TYPE_VIDEO){ 00471 *au_scale= stream->time_base.num; 00472 *au_rate = stream->time_base.den; 00473 }else{ 00474 *au_scale= stream->block_align ? stream->block_align*8 : 8; 00475 *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate; 00476 } 00477 gcd= av_gcd(*au_scale, *au_rate); 00478 *au_scale /= gcd; 00479 *au_rate /= gcd; 00480 }