FFmpeg: libavformat/riff.c Source File

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 #include "libavcodec/bytestream.h"
00026 
00027 /* Note: when encoding, the first matching tag is used, so order is
00028    important if multiple tags possible for a given codec. */
00029 const AVCodecTag ff_codec_bmp_tags[] = {
00030     { CODEC_ID_H264,         MKTAG('H', '2', '6', '4') },
00031     { CODEC_ID_H264,         MKTAG('h', '2', '6', '4') },
00032     { CODEC_ID_H264,         MKTAG('X', '2', '6', '4') },
00033     { CODEC_ID_H264,         MKTAG('x', '2', '6', '4') },
00034     { CODEC_ID_H264,         MKTAG('a', 'v', 'c', '1') },
00035     { CODEC_ID_H264,         MKTAG('V', 'S', 'S', 'H') },
00036     { CODEC_ID_H263,         MKTAG('H', '2', '6', '3') },
00037     { CODEC_ID_H263,         MKTAG('X', '2', '6', '3') },
00038     { CODEC_ID_H263,         MKTAG('T', '2', '6', '3') },
00039     { CODEC_ID_H263,         MKTAG('L', '2', '6', '3') },
00040     { CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },
00041     { CODEC_ID_H263,         MKTAG('Z', 'y', 'G', 'o') },
00042     { CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },
00043     { CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* intel h263 */
00044     { CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },
00045     { CODEC_ID_H263P,        MKTAG('U', '2', '6', '3') },
00046     { CODEC_ID_H263P,        MKTAG('v', 'i', 'v', '1') },
00047     { CODEC_ID_MPEG4,        MKTAG('F', 'M', 'P', '4') },
00048     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', 'X') },
00049     { CODEC_ID_MPEG4,        MKTAG('D', 'X', '5', '0') },
00050     { CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'D') },
00051     { CODEC_ID_MPEG4,        MKTAG('M', 'P', '4', 'S') },
00052     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },
00053     { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) }, /* some broken avi use this */
00054     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', '1') },
00055     { CODEC_ID_MPEG4,        MKTAG('B', 'L', 'Z', '0') },
00056     { CODEC_ID_MPEG4,        MKTAG('m', 'p', '4', 'v') },
00057     { CODEC_ID_MPEG4,        MKTAG('U', 'M', 'P', '4') },
00058     { CODEC_ID_MPEG4,        MKTAG('W', 'V', '1', 'F') },
00059     { CODEC_ID_MPEG4,        MKTAG('S', 'E', 'D', 'G') },
00060     { CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },
00061     { CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },
00062     { CODEC_ID_MPEG4,        MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
00063     { CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },
00064     { CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },
00065     { CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },
00066     { CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },
00067     { CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },
00068     { CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },
00069     { CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },
00070     { CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },
00071     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },
00072     { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },
00073     { CODEC_ID_MPEG4,        MKTAG('H', 'D', 'X', '4') }, /* flipped video */
00074     { CODEC_ID_MPEG4,        MKTAG('D', 'M', 'K', '2') },
00075     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'G', 'I') },
00076     { CODEC_ID_MPEG4,        MKTAG('I', 'N', 'M', 'C') },
00077     { CODEC_ID_MPEG4,        MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
00078     { CODEC_ID_MPEG4,        MKTAG('E', 'M', '4', 'A') },
00079     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
00080     { CODEC_ID_MPEG4,        MKTAG('S', 'N', '4', '0') },
00081     { CODEC_ID_MPEG4,        MKTAG('V', 'S', 'P', 'X') },
00082     { CODEC_ID_MPEG4,        MKTAG('U', 'L', 'D', 'X') },
00083     { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'V') },
00084     { CODEC_ID_MPEG4,        MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
00085     { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', '4', '3') },
00086     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '3') },
00087     { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', 'G', '3') },
00088     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '5') },
00089     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '6') },
00090     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '4') },
00091     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'V', 'X', '3') },
00092     { CODEC_ID_MSMPEG4V3,    MKTAG('A', 'P', '4', '1') },
00093     { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '1') },
00094     { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '0') },
00095     { CODEC_ID_MSMPEG4V2,    MKTAG('M', 'P', '4', '2') },
00096     { CODEC_ID_MSMPEG4V2,    MKTAG('D', 'I', 'V', '2') },
00097     { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', 'G', '4') },
00098     { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', '4', '1') },
00099     { CODEC_ID_WMV1,         MKTAG('W', 'M', 'V', '1') },
00100     { CODEC_ID_WMV2,         MKTAG('W', 'M', 'V', '2') },
00101     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'd') },
00102     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', 'd') },
00103     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
00104     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'l') },
00105     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '2', '5') },
00106     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '5', '0') },
00107     { CODEC_ID_DVVIDEO,      MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
00108     { CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
00109     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', ' ') },
00110     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', 's') },
00111     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
00112     { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '1') },
00113     { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '2') },
00114     { CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', '2') },
00115     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'P', 'E', 'G') },
00116     { CODEC_ID_MPEG1VIDEO,   MKTAG('P', 'I', 'M', '1') },
00117     { CODEC_ID_MPEG2VIDEO,   MKTAG('P', 'I', 'M', '2') },
00118     { CODEC_ID_MPEG1VIDEO,   MKTAG('V', 'C', 'R', '2') },
00119     { CODEC_ID_MPEG1VIDEO,   MKTAG( 1 ,  0 ,  0 ,  16) },
00120     { CODEC_ID_MPEG2VIDEO,   MKTAG( 2 ,  0 ,  0 ,  16) },
00121     { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  16) },
00122     { CODEC_ID_MPEG2VIDEO,   MKTAG('D', 'V', 'R', ' ') },
00123     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'M', 'E', 'S') },
00124     { CODEC_ID_MPEG2VIDEO,   MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
00125     { CODEC_ID_MPEG2VIDEO,   MKTAG('s', 'l', 'i', 'f') },
00126     { CODEC_ID_MPEG2VIDEO,   MKTAG('E', 'M', '2', 'V') },
00127     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
00128     { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'P', 'G') },
00129     { CODEC_ID_MJPEG,        MKTAG('L', 'J', 'P', 'G') },
00130     { CODEC_ID_MJPEG,        MKTAG('d', 'm', 'b', '1') },
00131     { CODEC_ID_MJPEG,        MKTAG('m', 'j', 'p', 'a') },
00132     { CODEC_ID_LJPEG,        MKTAG('L', 'J', 'P', 'G') },
00133     { CODEC_ID_MJPEG,        MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
00134     { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
00135     { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'P', 'G') },
00136     { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
00137     { CODEC_ID_MJPEG,        MKTAG('j', 'p', 'e', 'g') },
00138     { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'P', 'G') },
00139     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'R', 'n') },
00140     { CODEC_ID_MJPEG,        MKTAG('A', 'C', 'D', 'V') },
00141     { CODEC_ID_MJPEG,        MKTAG('Q', 'I', 'V', 'G') },
00142     { CODEC_ID_MJPEG,        MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
00143     { CODEC_ID_MJPEG,        MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
00144     { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
00145     { CODEC_ID_MJPEG,        MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
00146     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '1') },
00147     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '2') },
00148     { CODEC_ID_MJPEG,        MKTAG('M', 'T', 'S', 'J') },
00149     { CODEC_ID_MJPEG,        MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
00150     { CODEC_ID_HUFFYUV,      MKTAG('H', 'F', 'Y', 'U') },
00151     { CODEC_ID_FFVHUFF,      MKTAG('F', 'F', 'V', 'H') },
00152     { CODEC_ID_CYUV,         MKTAG('C', 'Y', 'U', 'V') },
00153     { CODEC_ID_RAWVIDEO,     MKTAG( 0 ,  0 ,  0 ,  0 ) },
00154     { CODEC_ID_RAWVIDEO,     MKTAG( 3 ,  0 ,  0 ,  0 ) },
00155     { CODEC_ID_RAWVIDEO,     MKTAG('I', '4', '2', '0') },
00156     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'Y', '2') },
00157     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', '2') },
00158     { CODEC_ID_RAWVIDEO,     MKTAG('V', '4', '2', '2') },
00159     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'N', 'V') },
00160     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'V') },
00161     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'Y') },
00162     { CODEC_ID_RAWVIDEO,     MKTAG('u', 'y', 'v', '1') },
00163     { CODEC_ID_RAWVIDEO,     MKTAG('2', 'V', 'u', '1') },
00164     { CODEC_ID_RAWVIDEO,     MKTAG('2', 'v', 'u', 'y') },
00165     { CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', 's') },
00166     { CODEC_ID_RAWVIDEO,     MKTAG('P', '4', '2', '2') },
00167     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '2') },
00168     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'V', 'Y') },
00169     { CODEC_ID_RAWVIDEO,     MKTAG('V', 'Y', 'U', 'Y') },
00170     { CODEC_ID_RAWVIDEO,     MKTAG('I', 'Y', 'U', 'V') },
00171     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', '0', '0') },
00172     { CODEC_ID_RAWVIDEO,     MKTAG('H', 'D', 'Y', 'C') },
00173     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
00174     { CODEC_ID_RAWVIDEO,     MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
00175     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', '1') },
00176     { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '1', '2') },
00177     { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '2', '1') },
00178     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', 'B') },
00179     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', 'B') },
00180     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'V', '9') },
00181     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
00182     { CODEC_ID_FRWU,         MKTAG('F', 'R', 'W', 'U') },
00183     { CODEC_ID_R10K,         MKTAG('R', '1', '0', 'k') },
00184     { CODEC_ID_R210,         MKTAG('r', '2', '1', '0') },
00185     { CODEC_ID_V210,         MKTAG('v', '2', '1', '0') },
00186     { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '1') },
00187     { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '2') },
00188     { CODEC_ID_INDEO4,       MKTAG('I', 'V', '4', '1') },
00189     { CODEC_ID_INDEO5,       MKTAG('I', 'V', '5', '0') },
00190     { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '1') },
00191     { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '0') },
00192     { CODEC_ID_VP5,          MKTAG('V', 'P', '5', '0') },
00193     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '0') },
00194     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '1') },
00195     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '2') },
00196     { CODEC_ID_VP6F,         MKTAG('V', 'P', '6', 'F') },
00197     { CODEC_ID_VP6F,         MKTAG('F', 'L', 'V', '4') },
00198     { CODEC_ID_VP8,          MKTAG('V', 'P', '8', '0') },
00199     { CODEC_ID_ASV1,         MKTAG('A', 'S', 'V', '1') },
00200     { CODEC_ID_ASV2,         MKTAG('A', 'S', 'V', '2') },
00201     { CODEC_ID_VCR1,         MKTAG('V', 'C', 'R', '1') },
00202     { CODEC_ID_FFV1,         MKTAG('F', 'F', 'V', '1') },
00203     { CODEC_ID_XAN_WC4,      MKTAG('X', 'x', 'a', 'n') },
00204     { CODEC_ID_MIMIC,        MKTAG('L', 'M', '2', '0') },
00205     { CODEC_ID_MSRLE,        MKTAG('m', 'r', 'l', 'e') },
00206     { CODEC_ID_MSRLE,        MKTAG( 1 ,  0 ,  0 ,  0 ) },
00207     { CODEC_ID_MSRLE,        MKTAG( 2 ,  0 ,  0 ,  0 ) },
00208     { CODEC_ID_MSVIDEO1,     MKTAG('M', 'S', 'V', 'C') },
00209     { CODEC_ID_MSVIDEO1,     MKTAG('m', 's', 'v', 'c') },
00210     { CODEC_ID_MSVIDEO1,     MKTAG('C', 'R', 'A', 'M') },
00211     { CODEC_ID_MSVIDEO1,     MKTAG('c', 'r', 'a', 'm') },
00212     { CODEC_ID_MSVIDEO1,     MKTAG('W', 'H', 'A', 'M') },
00213     { CODEC_ID_MSVIDEO1,     MKTAG('w', 'h', 'a', 'm') },
00214     { CODEC_ID_CINEPAK,      MKTAG('c', 'v', 'i', 'd') },
00215     { CODEC_ID_TRUEMOTION1,  MKTAG('D', 'U', 'C', 'K') },
00216     { CODEC_ID_TRUEMOTION1,  MKTAG('P', 'V', 'E', 'Z') },
00217     { CODEC_ID_MSZH,         MKTAG('M', 'S', 'Z', 'H') },
00218     { CODEC_ID_ZLIB,         MKTAG('Z', 'L', 'I', 'B') },
00219     { CODEC_ID_SNOW,         MKTAG('S', 'N', 'O', 'W') },
00220     { CODEC_ID_4XM,          MKTAG('4', 'X', 'M', 'V') },
00221     { CODEC_ID_FLV1,         MKTAG('F', 'L', 'V', '1') },
00222     { CODEC_ID_FLASHSV,      MKTAG('F', 'S', 'V', '1') },
00223     { CODEC_ID_SVQ1,         MKTAG('s', 'v', 'q', '1') },
00224     { CODEC_ID_TSCC,         MKTAG('t', 's', 'c', 'c') },
00225     { CODEC_ID_ULTI,         MKTAG('U', 'L', 'T', 'I') },
00226     { CODEC_ID_VIXL,         MKTAG('V', 'I', 'X', 'L') },
00227     { CODEC_ID_QPEG,         MKTAG('Q', 'P', 'E', 'G') },
00228     { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '0') },
00229     { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '1') },
00230     { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', '3') },
00231     { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', 'P') },
00232     { CODEC_ID_VC1,          MKTAG('W', 'V', 'C', '1') },
00233     { CODEC_ID_VC1,          MKTAG('W', 'M', 'V', 'A') },
00234     { CODEC_ID_LOCO,         MKTAG('L', 'O', 'C', 'O') },
00235     { CODEC_ID_WNV1,         MKTAG('W', 'N', 'V', '1') },
00236     { CODEC_ID_AASC,         MKTAG('A', 'A', 'S', 'C') },
00237     { CODEC_ID_INDEO2,       MKTAG('R', 'T', '2', '1') },
00238     { CODEC_ID_FRAPS,        MKTAG('F', 'P', 'S', '1') },
00239     { CODEC_ID_THEORA,       MKTAG('t', 'h', 'e', 'o') },
00240     { CODEC_ID_TRUEMOTION2,  MKTAG('T', 'M', '2', '0') },
00241     { CODEC_ID_CSCD,         MKTAG('C', 'S', 'C', 'D') },
00242     { CODEC_ID_ZMBV,         MKTAG('Z', 'M', 'B', 'V') },
00243     { CODEC_ID_KMVC,         MKTAG('K', 'M', 'V', 'C') },
00244     { CODEC_ID_CAVS,         MKTAG('C', 'A', 'V', 'S') },
00245     { CODEC_ID_JPEG2000,     MKTAG('M', 'J', '2', 'C') },
00246     { CODEC_ID_VMNC,         MKTAG('V', 'M', 'n', 'c') },
00247     { CODEC_ID_TARGA,        MKTAG('t', 'g', 'a', ' ') },
00248     { CODEC_ID_PNG,          MKTAG('M', 'P', 'N', 'G') },
00249     { CODEC_ID_PNG,          MKTAG('P', 'N', 'G', '1') },
00250     { CODEC_ID_CLJR,         MKTAG('c', 'l', 'j', 'r') },
00251     { CODEC_ID_DIRAC,        MKTAG('d', 'r', 'a', 'c') },
00252     { CODEC_ID_RPZA,         MKTAG('a', 'z', 'p', 'r') },
00253     { CODEC_ID_RPZA,         MKTAG('R', 'P', 'Z', 'A') },
00254     { CODEC_ID_RPZA,         MKTAG('r', 'p', 'z', 'a') },
00255     { CODEC_ID_SP5X,         MKTAG('S', 'P', '5', '4') },
00256     { CODEC_ID_AURA,         MKTAG('A', 'U', 'R', 'A') },
00257     { CODEC_ID_AURA2,        MKTAG('A', 'U', 'R', '2') },
00258     { CODEC_ID_DPX,          MKTAG('d', 'p', 'x', ' ') },
00259     { CODEC_ID_KGV1,         MKTAG('K', 'G', 'V', '1') },
00260     { CODEC_ID_LAGARITH,     MKTAG('L', 'A', 'G', 'S') },
00261     { CODEC_ID_NONE,         0 }
00262 };
00263 
00264 const AVCodecTag ff_codec_wav_tags[] = {
00265     { CODEC_ID_PCM_S16LE,       0x0001 },
00266     { CODEC_ID_PCM_U8,          0x0001 }, /* must come after s16le in this list */
00267     { CODEC_ID_PCM_S24LE,       0x0001 },
00268     { CODEC_ID_PCM_S32LE,       0x0001 },
00269     { CODEC_ID_ADPCM_MS,        0x0002 },
00270     { CODEC_ID_PCM_F32LE,       0x0003 },
00271     { CODEC_ID_PCM_F64LE,       0x0003 }, /* must come after f32le in this list */
00272     { CODEC_ID_PCM_ALAW,        0x0006 },
00273     { CODEC_ID_PCM_MULAW,       0x0007 },
00274     { CODEC_ID_WMAVOICE,        0x000A },
00275     { CODEC_ID_ADPCM_IMA_WAV,   0x0011 },
00276     { CODEC_ID_PCM_ZORK,        0x0011 }, /* must come after adpcm_ima_wav in this list */
00277     { CODEC_ID_ADPCM_YAMAHA,    0x0020 },
00278     { CODEC_ID_TRUESPEECH,      0x0022 },
00279     { CODEC_ID_GSM_MS,          0x0031 },
00280     { CODEC_ID_ADPCM_G726,      0x0045 },
00281     { CODEC_ID_MP2,             0x0050 },
00282     { CODEC_ID_MP3,             0x0055 },
00283     { CODEC_ID_AMR_NB,          0x0057 },
00284     { CODEC_ID_AMR_WB,          0x0058 },
00285     { CODEC_ID_ADPCM_IMA_DK4,   0x0061 },  /* rogue format number */
00286     { CODEC_ID_ADPCM_IMA_DK3,   0x0062 },  /* rogue format number */
00287     { CODEC_ID_ADPCM_IMA_WAV,   0x0069 },
00288     { CODEC_ID_VOXWARE,         0x0075 },
00289     { CODEC_ID_AAC,             0x00ff },
00290     { CODEC_ID_SIPR,            0x0130 },
00291     { CODEC_ID_WMAV1,           0x0160 },
00292     { CODEC_ID_WMAV2,           0x0161 },
00293     { CODEC_ID_WMAPRO,          0x0162 },
00294     { CODEC_ID_WMALOSSLESS,     0x0163 },
00295     { CODEC_ID_ADPCM_CT,        0x0200 },
00296     { CODEC_ID_ATRAC3,          0x0270 },
00297     { CODEC_ID_ADPCM_G722,      0x028F },
00298     { CODEC_ID_IMC,             0x0401 },
00299     { CODEC_ID_GSM_MS,          0x1500 },
00300     { CODEC_ID_TRUESPEECH,      0x1501 },
00301     { CODEC_ID_AAC_LATM,        0x1602 },
00302     { CODEC_ID_AC3,             0x2000 },
00303     { CODEC_ID_DTS,             0x2001 },
00304     { CODEC_ID_SONIC,           0x2048 },
00305     { CODEC_ID_SONIC_LS,        0x2048 },
00306     { CODEC_ID_PCM_MULAW,       0x6c75 },
00307     { CODEC_ID_AAC,             0x706d },
00308     { CODEC_ID_AAC,             0x4143 },
00309     { CODEC_ID_FLAC,            0xF1AC },
00310     { CODEC_ID_ADPCM_SWF,       ('S'<<8)+'F' },
00311     { CODEC_ID_VORBIS,          ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
00312 
00313     /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
00314     // for NuppelVideo (nuv.c)
00315     { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
00316     { CODEC_ID_MP3,       MKTAG('L', 'A', 'M', 'E') },
00317     { CODEC_ID_MP3,       MKTAG('M', 'P', '3', ' ') },
00318     { CODEC_ID_NONE,      0 },
00319 };
00320 
00321 #if CONFIG_MUXERS
00322 int64_t ff_start_tag(ByteIOContext *pb, const char *tag)
00323 {
00324     put_tag(pb, tag);
00325     put_le32(pb, 0);
00326     return url_ftell(pb);
00327 }
00328 
00329 void ff_end_tag(ByteIOContext *pb, int64_t start)
00330 {
00331     int64_t pos;
00332 
00333     pos = url_ftell(pb);
00334     url_fseek(pb, start - 4, SEEK_SET);
00335     put_le32(pb, (uint32_t)(pos - start));
00336     url_fseek(pb, pos, SEEK_SET);
00337 }
00338 
00339 /* WAVEFORMATEX header */
00340 /* returns the size or -1 on error */
00341 int ff_put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
00342 {
00343     int bps, blkalign, bytespersec;
00344     int hdrsize = 18;
00345     int waveformatextensible;
00346     uint8_t temp[256];
00347     uint8_t *riff_extradata= temp;
00348     uint8_t *riff_extradata_start= temp;
00349 
00350     if(!enc->codec_tag || enc->codec_tag > 0xffff)
00351         return -1;
00352     waveformatextensible =   (enc->channels > 2 && enc->channel_layout)
00353                           || enc->sample_rate > 48000
00354                           || av_get_bits_per_sample(enc->codec_id) > 16;
00355 
00356     if (waveformatextensible) {
00357         put_le16(pb, 0xfffe);
00358     } else {
00359         put_le16(pb, enc->codec_tag);
00360     }
00361     put_le16(pb, enc->channels);
00362     put_le32(pb, enc->sample_rate);
00363     if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
00364         bps = 0;
00365     } else if (enc->codec_id == CODEC_ID_ADPCM_G726) {
00366         bps = 4;
00367     } else {
00368         if (!(bps = av_get_bits_per_sample(enc->codec_id)))
00369             bps = 16; // default to 16
00370     }
00371     if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
00372         av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
00373     }
00374 
00375     if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
00376         blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
00377         //blkalign = 144 * enc->bit_rate/enc->sample_rate;
00378     } else if (enc->codec_id == CODEC_ID_AC3) {
00379             blkalign = 3840; //maximum bytes per frame
00380     } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
00381         blkalign = 1;
00382     } else if (enc->block_align != 0) { /* specified by the codec */
00383         blkalign = enc->block_align;
00384     } else
00385         blkalign = enc->channels*bps >> 3;
00386     if (enc->codec_id == CODEC_ID_PCM_U8 ||
00387         enc->codec_id == CODEC_ID_PCM_S24LE ||
00388         enc->codec_id == CODEC_ID_PCM_S32LE ||
00389         enc->codec_id == CODEC_ID_PCM_F32LE ||
00390         enc->codec_id == CODEC_ID_PCM_F64LE ||
00391         enc->codec_id == CODEC_ID_PCM_S16LE) {
00392         bytespersec = enc->sample_rate * blkalign;
00393     } else {
00394         bytespersec = enc->bit_rate / 8;
00395     }
00396     put_le32(pb, bytespersec); /* bytes per second */
00397     put_le16(pb, blkalign); /* block align */
00398     put_le16(pb, bps); /* bits per sample */
00399     if (enc->codec_id == CODEC_ID_MP3) {
00400         hdrsize += 12;
00401         bytestream_put_le16(&riff_extradata, 1);    /* wID */
00402         bytestream_put_le32(&riff_extradata, 2);    /* fdwFlags */
00403         bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
00404         bytestream_put_le16(&riff_extradata, 1);    /* nFramesPerBlock */
00405         bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
00406     } else if (enc->codec_id == CODEC_ID_MP2) {
00407         hdrsize += 22;
00408         bytestream_put_le16(&riff_extradata, 2);                          /* fwHeadLayer */
00409         bytestream_put_le32(&riff_extradata, enc->bit_rate);              /* dwHeadBitrate */
00410         bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
00411         bytestream_put_le16(&riff_extradata, 0);                          /* fwHeadModeExt */
00412         bytestream_put_le16(&riff_extradata, 1);                          /* wHeadEmphasis */
00413         bytestream_put_le16(&riff_extradata, 16);                         /* fwHeadFlags */
00414         bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSLow */
00415         bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSHigh */
00416     } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00417         hdrsize += 2;
00418         bytestream_put_le16(&riff_extradata, enc->frame_size); /* wSamplesPerBlock */
00419     } else if(enc->extradata_size){
00420         riff_extradata_start= enc->extradata;
00421         riff_extradata= enc->extradata + enc->extradata_size;
00422         hdrsize += enc->extradata_size;
00423     } else if (!waveformatextensible){
00424         hdrsize -= 2;
00425     }
00426     if(waveformatextensible) {                                    /* write WAVEFORMATEXTENSIBLE extensions */
00427         hdrsize += 22;
00428         put_le16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
00429         put_le16(pb, enc->bits_per_coded_sample);                 /* ValidBitsPerSample || SamplesPerBlock || Reserved */
00430         put_le32(pb, enc->channel_layout);                        /* dwChannelMask */
00431         put_le32(pb, enc->codec_tag);                             /* GUID + next 3 */
00432         put_le32(pb, 0x00100000);
00433         put_le32(pb, 0xAA000080);
00434         put_le32(pb, 0x719B3800);
00435     } else if(riff_extradata - riff_extradata_start) {
00436         put_le16(pb, riff_extradata - riff_extradata_start);
00437     }
00438     put_buffer(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
00439     if(hdrsize&1){
00440         hdrsize++;
00441         put_byte(pb, 0);
00442     }
00443 
00444     return hdrsize;
00445 }
00446 
00447 /* BITMAPINFOHEADER header */
00448 void ff_put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
00449 {
00450     put_le32(pb, 40 + enc->extradata_size); /* size */
00451     put_le32(pb, enc->width);
00452     //We always store RGB TopDown
00453     put_le32(pb, enc->codec_tag ? enc->height : -enc->height);
00454     put_le16(pb, 1); /* planes */
00455 
00456     put_le16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
00457     /* compression type */
00458     put_le32(pb, enc->codec_tag);
00459     put_le32(pb, enc->width * enc->height * 3);
00460     put_le32(pb, 0);
00461     put_le32(pb, 0);
00462     put_le32(pb, 0);
00463     put_le32(pb, 0);
00464 
00465     put_buffer(pb, enc->extradata, enc->extradata_size);
00466 
00467     if (!for_asf && enc->extradata_size & 1)
00468         put_byte(pb, 0);
00469 }
00470 #endif //CONFIG_MUXERS
00471 
00472 #if CONFIG_DEMUXERS
00473 /* We could be given one of the three possible structures here:
00474  * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
00475  * is an expansion of the previous one with the fields added
00476  * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
00477  * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
00478  * an openended structure.
00479  */
00480 void ff_get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
00481 {
00482     int id;
00483 
00484     id = get_le16(pb);
00485     codec->codec_type = AVMEDIA_TYPE_AUDIO;
00486     codec->codec_tag = id;
00487     codec->channels = get_le16(pb);
00488     codec->sample_rate = get_le32(pb);
00489     codec->bit_rate = get_le32(pb) * 8;
00490     codec->block_align = get_le16(pb);
00491     if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
00492         codec->bits_per_coded_sample = 8;
00493     }else
00494         codec->bits_per_coded_sample = get_le16(pb);
00495     if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */
00496         int cbSize = get_le16(pb); /* cbSize */
00497         size -= 18;
00498         cbSize = FFMIN(size, cbSize);
00499         if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
00500             codec->bits_per_coded_sample = get_le16(pb);
00501             codec->channel_layout = get_le32(pb); /* dwChannelMask */
00502             id = get_le32(pb); /* 4 first bytes of GUID */
00503             url_fskip(pb, 12); /* skip end of GUID */
00504             cbSize -= 22;
00505             size -= 22;
00506         }
00507         codec->extradata_size = cbSize;
00508         if (cbSize > 0) {
00509             codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
00510             get_buffer(pb, codec->extradata, codec->extradata_size);
00511             size -= cbSize;
00512         }
00513 
00514         /* It is possible for the chunk to contain garbage at the end */
00515         if (size > 0)
00516             url_fskip(pb, size);
00517     }
00518     codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
00519     if (codec->codec_id == CODEC_ID_AAC_LATM) {
00520         /* channels and sample_rate values are those prior to applying SBR and/or PS */
00521         codec->channels    = 0;
00522         codec->sample_rate = 0;
00523     }
00524 }
00525 
00526 
00527 enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps)
00528 {
00529     enum CodecID id;
00530     id = ff_codec_get_id(ff_codec_wav_tags, tag);
00531     if (id <= 0)
00532         return id;
00533     /* handle specific u8 codec */
00534     if (id == CODEC_ID_PCM_S16LE && bps == 8)
00535         id = CODEC_ID_PCM_U8;
00536     if (id == CODEC_ID_PCM_S16LE && bps == 24)
00537         id = CODEC_ID_PCM_S24LE;
00538     if (id == CODEC_ID_PCM_S16LE && bps == 32)
00539         id = CODEC_ID_PCM_S32LE;
00540     if (id == CODEC_ID_PCM_F32LE && bps == 64)
00541         id = CODEC_ID_PCM_F64LE;
00542     if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
00543         id = CODEC_ID_PCM_ZORK;
00544     return id;
00545 }
00546 
00547 int ff_get_bmp_header(ByteIOContext *pb, AVStream *st)
00548 {
00549     int tag1;
00550     get_le32(pb); /* size */
00551     st->codec->width = get_le32(pb);
00552     st->codec->height = (int32_t)get_le32(pb);
00553     get_le16(pb); /* planes */
00554     st->codec->bits_per_coded_sample= get_le16(pb); /* depth */
00555     tag1 = get_le32(pb);
00556     get_le32(pb); /* ImageSize */
00557     get_le32(pb); /* XPelsPerMeter */
00558     get_le32(pb); /* YPelsPerMeter */
00559     get_le32(pb); /* ClrUsed */
00560     get_le32(pb); /* ClrImportant */
00561     return tag1;
00562 }
00563 #endif // CONFIG_DEMUXERS
00564 
00565 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
00566 {
00567     int gcd;
00568 
00569     *au_ssize= stream->block_align;
00570     if(stream->frame_size && stream->sample_rate){
00571         *au_scale=stream->frame_size;
00572         *au_rate= stream->sample_rate;
00573     }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
00574              stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
00575         *au_scale= stream->time_base.num;
00576         *au_rate = stream->time_base.den;
00577     }else{
00578         *au_scale= stream->block_align ? stream->block_align*8 : 8;
00579         *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
00580     }
00581     gcd= av_gcd(*au_scale, *au_rate);
00582     *au_scale /= gcd;
00583     *au_rate /= gcd;
00584 }