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libavformat/riff.c

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00001 /*
00002  * RIFF codec tags
00003  * Copyright (c) 2000 Fabrice Bellard
00004  *
00005  * This file is part of Libav.
00006  *
00007  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #include "libavutil/mathematics.h"
00023 #include "libavcodec/avcodec.h"
00024 #include "avformat.h"
00025 #include "avio_internal.h"
00026 #include "riff.h"
00027 #include "libavcodec/bytestream.h"
00028 
00029 /* Note: when encoding, the first matching tag is used, so order is
00030    important if multiple tags possible for a given codec. */
00031 const AVCodecTag ff_codec_bmp_tags[] = {
00032     { CODEC_ID_H264,         MKTAG('H', '2', '6', '4') },
00033     { CODEC_ID_H264,         MKTAG('h', '2', '6', '4') },
00034     { CODEC_ID_H264,         MKTAG('X', '2', '6', '4') },
00035     { CODEC_ID_H264,         MKTAG('x', '2', '6', '4') },
00036     { CODEC_ID_H264,         MKTAG('a', 'v', 'c', '1') },
00037     { CODEC_ID_H264,         MKTAG('D', 'A', 'V', 'C') },
00038     { CODEC_ID_H264,         MKTAG('V', 'S', 'S', 'H') },
00039     { CODEC_ID_H263,         MKTAG('H', '2', '6', '3') },
00040     { CODEC_ID_H263,         MKTAG('X', '2', '6', '3') },
00041     { CODEC_ID_H263,         MKTAG('T', '2', '6', '3') },
00042     { CODEC_ID_H263,         MKTAG('L', '2', '6', '3') },
00043     { CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },
00044     { CODEC_ID_H263,         MKTAG('Z', 'y', 'G', 'o') },
00045     { CODEC_ID_H263,         MKTAG('M', '2', '6', '3') },
00046     { CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },
00047     { CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* intel h263 */
00048     { CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },
00049     { CODEC_ID_H263P,        MKTAG('U', '2', '6', '3') },
00050     { CODEC_ID_H263P,        MKTAG('v', 'i', 'v', '1') },
00051     { CODEC_ID_MPEG4,        MKTAG('F', 'M', 'P', '4') },
00052     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', 'X') },
00053     { CODEC_ID_MPEG4,        MKTAG('D', 'X', '5', '0') },
00054     { CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'D') },
00055     { CODEC_ID_MPEG4,        MKTAG('M', 'P', '4', 'S') },
00056     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },
00057     { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) }, /* some broken avi use this */
00058     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', '1') },
00059     { CODEC_ID_MPEG4,        MKTAG('B', 'L', 'Z', '0') },
00060     { CODEC_ID_MPEG4,        MKTAG('m', 'p', '4', 'v') },
00061     { CODEC_ID_MPEG4,        MKTAG('U', 'M', 'P', '4') },
00062     { CODEC_ID_MPEG4,        MKTAG('W', 'V', '1', 'F') },
00063     { CODEC_ID_MPEG4,        MKTAG('S', 'E', 'D', 'G') },
00064     { CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },
00065     { CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },
00066     { CODEC_ID_MPEG4,        MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
00067     { CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },
00068     { CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },
00069     { CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },
00070     { CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },
00071     { CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },
00072     { CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },
00073     { CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },
00074     { CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },
00075     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },
00076     { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },
00077     { CODEC_ID_MPEG4,        MKTAG('H', 'D', 'X', '4') }, /* flipped video */
00078     { CODEC_ID_MPEG4,        MKTAG('D', 'M', 'K', '2') },
00079     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'G', 'I') },
00080     { CODEC_ID_MPEG4,        MKTAG('I', 'N', 'M', 'C') },
00081     { CODEC_ID_MPEG4,        MKTAG('E', 'P', 'H', 'V') }, /* Ephv MPEG-4 */
00082     { CODEC_ID_MPEG4,        MKTAG('E', 'M', '4', 'A') },
00083     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'C', 'C') }, /* Divio MPEG-4 */
00084     { CODEC_ID_MPEG4,        MKTAG('S', 'N', '4', '0') },
00085     { CODEC_ID_MPEG4,        MKTAG('V', 'S', 'P', 'X') },
00086     { CODEC_ID_MPEG4,        MKTAG('U', 'L', 'D', 'X') },
00087     { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'V') },
00088     { CODEC_ID_MPEG4,        MKTAG('S', 'I', 'P', 'P') }, /* Samsung SHR-6040 */
00089     { CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'X') },
00090     { CODEC_ID_MPEG4,        MKTAG('D', 'r', 'e', 'X') },
00091     { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', '4', '3') },
00092     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '3') },
00093     { CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', 'G', '3') },
00094     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '5') },
00095     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '6') },
00096     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '4') },
00097     { CODEC_ID_MSMPEG4V3,    MKTAG('D', 'V', 'X', '3') },
00098     { CODEC_ID_MSMPEG4V3,    MKTAG('A', 'P', '4', '1') },
00099     { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '1') },
00100     { CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '0') },
00101     { CODEC_ID_MSMPEG4V2,    MKTAG('M', 'P', '4', '2') },
00102     { CODEC_ID_MSMPEG4V2,    MKTAG('D', 'I', 'V', '2') },
00103     { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', 'G', '4') },
00104     { CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', '4', '1') },
00105     { CODEC_ID_WMV1,         MKTAG('W', 'M', 'V', '1') },
00106     { CODEC_ID_WMV2,         MKTAG('W', 'M', 'V', '2') },
00107     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'd') },
00108     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', 'd') },
00109     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
00110     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'l') },
00111     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '2', '5') },
00112     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '5', '0') },
00113     { CODEC_ID_DVVIDEO,      MKTAG('c', 'd', 'v', 'c') }, /* Canopus DV */
00114     { CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', 'H') }, /* Canopus DV */
00115     { CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', '5') }, /* Canopus DV */
00116     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', ' ') },
00117     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', 's') },
00118     { CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },
00119     { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '1') },
00120     { CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '2') },
00121     { CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', '2') },
00122     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'P', 'E', 'G') },
00123     { CODEC_ID_MPEG1VIDEO,   MKTAG('P', 'I', 'M', '1') },
00124     { CODEC_ID_MPEG2VIDEO,   MKTAG('P', 'I', 'M', '2') },
00125     { CODEC_ID_MPEG1VIDEO,   MKTAG('V', 'C', 'R', '2') },
00126     { CODEC_ID_MPEG1VIDEO,   MKTAG( 1 ,  0 ,  0 ,  16) },
00127     { CODEC_ID_MPEG2VIDEO,   MKTAG( 2 ,  0 ,  0 ,  16) },
00128     { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  16) },
00129     { CODEC_ID_MPEG2VIDEO,   MKTAG('D', 'V', 'R', ' ') },
00130     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'M', 'E', 'S') },
00131     { CODEC_ID_MPEG2VIDEO,   MKTAG('L', 'M', 'P', '2') }, /* Lead MPEG2 in avi */
00132     { CODEC_ID_MPEG2VIDEO,   MKTAG('s', 'l', 'i', 'f') },
00133     { CODEC_ID_MPEG2VIDEO,   MKTAG('E', 'M', '2', 'V') },
00134     { CODEC_ID_MPEG2VIDEO,   MKTAG('M', '7', '0', '1') }, /* Matrox MPEG2 intra-only */
00135     { CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', 'v') },
00136     { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'P', 'G') },
00137     { CODEC_ID_MJPEG,        MKTAG('L', 'J', 'P', 'G') },
00138     { CODEC_ID_MJPEG,        MKTAG('d', 'm', 'b', '1') },
00139     { CODEC_ID_MJPEG,        MKTAG('m', 'j', 'p', 'a') },
00140     { CODEC_ID_LJPEG,        MKTAG('L', 'J', 'P', 'G') },
00141     { CODEC_ID_MJPEG,        MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
00142     { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - encoder */
00143     { CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'P', 'G') },
00144     { CODEC_ID_MJPEG,        MKTAG('M', 'J', 'L', 'S') }, /* JPEG-LS custom FOURCC for avi - decoder */
00145     { CODEC_ID_MJPEG,        MKTAG('j', 'p', 'e', 'g') },
00146     { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'P', 'G') },
00147     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'R', 'n') },
00148     { CODEC_ID_MJPEG,        MKTAG('A', 'C', 'D', 'V') },
00149     { CODEC_ID_MJPEG,        MKTAG('Q', 'I', 'V', 'G') },
00150     { CODEC_ID_MJPEG,        MKTAG('S', 'L', 'M', 'J') }, /* SL M-JPEG */
00151     { CODEC_ID_MJPEG,        MKTAG('C', 'J', 'P', 'G') }, /* Creative Webcam JPEG */
00152     { CODEC_ID_MJPEG,        MKTAG('I', 'J', 'L', 'V') }, /* Intel JPEG Library Video Codec */
00153     { CODEC_ID_MJPEG,        MKTAG('M', 'V', 'J', 'P') }, /* Midvid JPEG Video Codec */
00154     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '1') },
00155     { CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '2') },
00156     { CODEC_ID_MJPEG,        MKTAG('M', 'T', 'S', 'J') },
00157     { CODEC_ID_MJPEG,        MKTAG('Z', 'J', 'P', 'G') }, /* Paradigm Matrix M-JPEG Codec */
00158     { CODEC_ID_MJPEG,        MKTAG('M', 'M', 'J', 'P') },
00159     { CODEC_ID_HUFFYUV,      MKTAG('H', 'F', 'Y', 'U') },
00160     { CODEC_ID_FFVHUFF,      MKTAG('F', 'F', 'V', 'H') },
00161     { CODEC_ID_CYUV,         MKTAG('C', 'Y', 'U', 'V') },
00162     { CODEC_ID_RAWVIDEO,     MKTAG( 0 ,  0 ,  0 ,  0 ) },
00163     { CODEC_ID_RAWVIDEO,     MKTAG( 3 ,  0 ,  0 ,  0 ) },
00164     { CODEC_ID_RAWVIDEO,     MKTAG('I', '4', '2', '0') },
00165     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'Y', '2') },
00166     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', '2') },
00167     { CODEC_ID_RAWVIDEO,     MKTAG('V', '4', '2', '2') },
00168     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'N', 'V') },
00169     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'V') },
00170     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'Y') },
00171     { CODEC_ID_RAWVIDEO,     MKTAG('u', 'y', 'v', '1') },
00172     { CODEC_ID_RAWVIDEO,     MKTAG('2', 'V', 'u', '1') },
00173     { CODEC_ID_RAWVIDEO,     MKTAG('2', 'v', 'u', 'y') },
00174     { CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', 's') },
00175     { CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', '2') },
00176     { CODEC_ID_RAWVIDEO,     MKTAG('P', '4', '2', '2') },
00177     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '2') },
00178     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '6') },
00179     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '2', '4') },
00180     { CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'V', 'Y') },
00181     { CODEC_ID_RAWVIDEO,     MKTAG('V', 'Y', 'U', 'Y') },
00182     { CODEC_ID_RAWVIDEO,     MKTAG('I', 'Y', 'U', 'V') },
00183     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', '0', '0') },
00184     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', ' ', ' ') },
00185     { CODEC_ID_RAWVIDEO,     MKTAG('H', 'D', 'Y', 'C') },
00186     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
00187     { CODEC_ID_RAWVIDEO,     MKTAG('V', 'D', 'T', 'Z') }, /* SoftLab-NSK VideoTizer */
00188     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', '1') },
00189     { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '1', '2') },
00190     { CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '2', '1') },
00191     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', 'B') },
00192     { CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', 'B') },
00193     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'V', '9') },
00194     { CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },
00195     { CODEC_ID_RAWVIDEO,     MKTAG('a', 'u', 'v', '2') },
00196     { CODEC_ID_FRWU,         MKTAG('F', 'R', 'W', 'U') },
00197     { CODEC_ID_R10K,         MKTAG('R', '1', '0', 'k') },
00198     { CODEC_ID_R210,         MKTAG('r', '2', '1', '0') },
00199     { CODEC_ID_V210,         MKTAG('v', '2', '1', '0') },
00200     { CODEC_ID_V410,         MKTAG('v', '4', '1', '0') },
00201     { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '1') },
00202     { CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '2') },
00203     { CODEC_ID_INDEO4,       MKTAG('I', 'V', '4', '1') },
00204     { CODEC_ID_INDEO5,       MKTAG('I', 'V', '5', '0') },
00205     { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '1') },
00206     { CODEC_ID_VP3,          MKTAG('V', 'P', '3', '0') },
00207     { CODEC_ID_VP5,          MKTAG('V', 'P', '5', '0') },
00208     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '0') },
00209     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '1') },
00210     { CODEC_ID_VP6,          MKTAG('V', 'P', '6', '2') },
00211     { CODEC_ID_VP6F,         MKTAG('V', 'P', '6', 'F') },
00212     { CODEC_ID_VP6F,         MKTAG('F', 'L', 'V', '4') },
00213     { CODEC_ID_VP8,          MKTAG('V', 'P', '8', '0') },
00214     { CODEC_ID_ASV1,         MKTAG('A', 'S', 'V', '1') },
00215     { CODEC_ID_ASV2,         MKTAG('A', 'S', 'V', '2') },
00216     { CODEC_ID_VCR1,         MKTAG('V', 'C', 'R', '1') },
00217     { CODEC_ID_FFV1,         MKTAG('F', 'F', 'V', '1') },
00218     { CODEC_ID_XAN_WC4,      MKTAG('X', 'x', 'a', 'n') },
00219     { CODEC_ID_MIMIC,        MKTAG('L', 'M', '2', '0') },
00220     { CODEC_ID_MSRLE,        MKTAG('m', 'r', 'l', 'e') },
00221     { CODEC_ID_MSRLE,        MKTAG( 1 ,  0 ,  0 ,  0 ) },
00222     { CODEC_ID_MSRLE,        MKTAG( 2 ,  0 ,  0 ,  0 ) },
00223     { CODEC_ID_MSVIDEO1,     MKTAG('M', 'S', 'V', 'C') },
00224     { CODEC_ID_MSVIDEO1,     MKTAG('m', 's', 'v', 'c') },
00225     { CODEC_ID_MSVIDEO1,     MKTAG('C', 'R', 'A', 'M') },
00226     { CODEC_ID_MSVIDEO1,     MKTAG('c', 'r', 'a', 'm') },
00227     { CODEC_ID_MSVIDEO1,     MKTAG('W', 'H', 'A', 'M') },
00228     { CODEC_ID_MSVIDEO1,     MKTAG('w', 'h', 'a', 'm') },
00229     { CODEC_ID_CINEPAK,      MKTAG('c', 'v', 'i', 'd') },
00230     { CODEC_ID_TRUEMOTION1,  MKTAG('D', 'U', 'C', 'K') },
00231     { CODEC_ID_TRUEMOTION1,  MKTAG('P', 'V', 'E', 'Z') },
00232     { CODEC_ID_MSZH,         MKTAG('M', 'S', 'Z', 'H') },
00233     { CODEC_ID_ZLIB,         MKTAG('Z', 'L', 'I', 'B') },
00234     { CODEC_ID_SNOW,         MKTAG('S', 'N', 'O', 'W') },
00235     { CODEC_ID_4XM,          MKTAG('4', 'X', 'M', 'V') },
00236     { CODEC_ID_FLV1,         MKTAG('F', 'L', 'V', '1') },
00237     { CODEC_ID_FLASHSV,      MKTAG('F', 'S', 'V', '1') },
00238     { CODEC_ID_SVQ1,         MKTAG('s', 'v', 'q', '1') },
00239     { CODEC_ID_TSCC,         MKTAG('t', 's', 'c', 'c') },
00240     { CODEC_ID_ULTI,         MKTAG('U', 'L', 'T', 'I') },
00241     { CODEC_ID_VIXL,         MKTAG('V', 'I', 'X', 'L') },
00242     { CODEC_ID_QPEG,         MKTAG('Q', 'P', 'E', 'G') },
00243     { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '0') },
00244     { CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '1') },
00245     { CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', '3') },
00246     { CODEC_ID_WMV3IMAGE,    MKTAG('W', 'M', 'V', 'P') },
00247     { CODEC_ID_VC1,          MKTAG('W', 'V', 'C', '1') },
00248     { CODEC_ID_VC1,          MKTAG('W', 'M', 'V', 'A') },
00249     { CODEC_ID_VC1IMAGE,     MKTAG('W', 'V', 'P', '2') },
00250     { CODEC_ID_LOCO,         MKTAG('L', 'O', 'C', 'O') },
00251     { CODEC_ID_WNV1,         MKTAG('W', 'N', 'V', '1') },
00252     { CODEC_ID_AASC,         MKTAG('A', 'A', 'S', 'C') },
00253     { CODEC_ID_INDEO2,       MKTAG('R', 'T', '2', '1') },
00254     { CODEC_ID_FRAPS,        MKTAG('F', 'P', 'S', '1') },
00255     { CODEC_ID_THEORA,       MKTAG('t', 'h', 'e', 'o') },
00256     { CODEC_ID_TRUEMOTION2,  MKTAG('T', 'M', '2', '0') },
00257     { CODEC_ID_CSCD,         MKTAG('C', 'S', 'C', 'D') },
00258     { CODEC_ID_ZMBV,         MKTAG('Z', 'M', 'B', 'V') },
00259     { CODEC_ID_KMVC,         MKTAG('K', 'M', 'V', 'C') },
00260     { CODEC_ID_CAVS,         MKTAG('C', 'A', 'V', 'S') },
00261     { CODEC_ID_JPEG2000,     MKTAG('m', 'j', 'p', '2') },
00262     { CODEC_ID_JPEG2000,     MKTAG('M', 'J', '2', 'C') },
00263     { CODEC_ID_JPEG2000,     MKTAG('L', 'J', '2', 'C') },
00264     { CODEC_ID_JPEG2000,     MKTAG('L', 'J', '2', 'K') },
00265     { CODEC_ID_VMNC,         MKTAG('V', 'M', 'n', 'c') },
00266     { CODEC_ID_TARGA,        MKTAG('t', 'g', 'a', ' ') },
00267     { CODEC_ID_PNG,          MKTAG('M', 'P', 'N', 'G') },
00268     { CODEC_ID_PNG,          MKTAG('P', 'N', 'G', '1') },
00269     { CODEC_ID_CLJR,         MKTAG('C', 'L', 'J', 'R') },
00270     { CODEC_ID_DIRAC,        MKTAG('d', 'r', 'a', 'c') },
00271     { CODEC_ID_RPZA,         MKTAG('a', 'z', 'p', 'r') },
00272     { CODEC_ID_RPZA,         MKTAG('R', 'P', 'Z', 'A') },
00273     { CODEC_ID_RPZA,         MKTAG('r', 'p', 'z', 'a') },
00274     { CODEC_ID_SP5X,         MKTAG('S', 'P', '5', '4') },
00275     { CODEC_ID_AURA,         MKTAG('A', 'U', 'R', 'A') },
00276     { CODEC_ID_AURA2,        MKTAG('A', 'U', 'R', '2') },
00277     { CODEC_ID_DPX,          MKTAG('d', 'p', 'x', ' ') },
00278     { CODEC_ID_KGV1,         MKTAG('K', 'G', 'V', '1') },
00279     { CODEC_ID_LAGARITH,     MKTAG('L', 'A', 'G', 'S') },
00280     { CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'R', 'A') },
00281     { CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'R', 'G') },
00282     { CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'Y', '0') },
00283     { CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'Y', '2') },
00284     { CODEC_ID_VBLE,         MKTAG('V', 'B', 'L', 'E') },
00285     { CODEC_ID_DXTORY,       MKTAG('x', 't', 'o', 'r') },
00286     { CODEC_ID_NONE,         0 }
00287 };
00288 
00289 const AVCodecTag ff_codec_wav_tags[] = {
00290     { CODEC_ID_PCM_S16LE,       0x0001 },
00291     { CODEC_ID_PCM_U8,          0x0001 }, /* must come after s16le in this list */
00292     { CODEC_ID_PCM_S24LE,       0x0001 },
00293     { CODEC_ID_PCM_S32LE,       0x0001 },
00294     { CODEC_ID_ADPCM_MS,        0x0002 },
00295     { CODEC_ID_PCM_F32LE,       0x0003 },
00296     { CODEC_ID_PCM_F64LE,       0x0003 }, /* must come after f32le in this list */
00297     { CODEC_ID_PCM_ALAW,        0x0006 },
00298     { CODEC_ID_PCM_MULAW,       0x0007 },
00299     { CODEC_ID_WMAVOICE,        0x000A },
00300     { CODEC_ID_ADPCM_IMA_WAV,   0x0011 },
00301     { CODEC_ID_PCM_ZORK,        0x0011 }, /* must come after adpcm_ima_wav in this list */
00302     { CODEC_ID_ADPCM_YAMAHA,    0x0020 },
00303     { CODEC_ID_TRUESPEECH,      0x0022 },
00304     { CODEC_ID_GSM_MS,          0x0031 },
00305     { CODEC_ID_ADPCM_G726,      0x0045 },
00306     { CODEC_ID_MP2,             0x0050 },
00307     { CODEC_ID_MP3,             0x0055 },
00308     { CODEC_ID_AMR_NB,          0x0057 },
00309     { CODEC_ID_AMR_WB,          0x0058 },
00310     { CODEC_ID_ADPCM_IMA_DK4,   0x0061 },  /* rogue format number */
00311     { CODEC_ID_ADPCM_IMA_DK3,   0x0062 },  /* rogue format number */
00312     { CODEC_ID_ADPCM_IMA_WAV,   0x0069 },
00313     { CODEC_ID_VOXWARE,         0x0075 },
00314     { CODEC_ID_AAC,             0x00ff },
00315     { CODEC_ID_SIPR,            0x0130 },
00316     { CODEC_ID_WMAV1,           0x0160 },
00317     { CODEC_ID_WMAV2,           0x0161 },
00318     { CODEC_ID_WMAPRO,          0x0162 },
00319     { CODEC_ID_WMALOSSLESS,     0x0163 },
00320     { CODEC_ID_ADPCM_CT,        0x0200 },
00321     { CODEC_ID_ATRAC3,          0x0270 },
00322     { CODEC_ID_ADPCM_G722,      0x028F },
00323     { CODEC_ID_IMC,             0x0401 },
00324     { CODEC_ID_GSM_MS,          0x1500 },
00325     { CODEC_ID_TRUESPEECH,      0x1501 },
00326     { CODEC_ID_AAC,             0x1600 }, /* ADTS AAC */
00327     { CODEC_ID_AAC_LATM,        0x1602 },
00328     { CODEC_ID_AC3,             0x2000 },
00329     { CODEC_ID_DTS,             0x2001 },
00330     { CODEC_ID_PCM_MULAW,       0x6c75 },
00331     { CODEC_ID_AAC,             0x706d },
00332     { CODEC_ID_AAC,             0x4143 },
00333     { CODEC_ID_SPEEX,           0xA109 },
00334     { CODEC_ID_FLAC,            0xF1AC },
00335     { CODEC_ID_ADPCM_SWF,       ('S'<<8)+'F' },
00336     { CODEC_ID_VORBIS,          ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
00337 
00338     /* FIXME: All of the IDs below are not 16 bit and thus illegal. */
00339     // for NuppelVideo (nuv.c)
00340     { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
00341     { CODEC_ID_MP3,       MKTAG('L', 'A', 'M', 'E') },
00342     { CODEC_ID_MP3,       MKTAG('M', 'P', '3', ' ') },
00343     { CODEC_ID_NONE,      0 },
00344 };
00345 
00346 const AVMetadataConv ff_riff_info_conv[] = {
00347     { "IART", "artist"    },
00348     { "ICMT", "comment"   },
00349     { "ICOP", "copyright" },
00350     { "ICRD", "date"      },
00351     { "IGNR", "genre"     },
00352     { "ILNG", "language"  },
00353     { "INAM", "title"     },
00354     { "IPRD", "album"     },
00355     { "IPRT", "track"     },
00356     { "ISFT", "encoder"   },
00357     { "ITCH", "encoded_by"},
00358     { 0 },
00359 };
00360 
00361 const char ff_riff_tags[][5] = {
00362     "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
00363     "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
00364     "IPRT", "ISBJ", "ISFT", "ISHP", "ISRC", "ISRF", "ITCH",
00365     {0}
00366 };
00367 
00368 #if CONFIG_MUXERS
00369 int64_t ff_start_tag(AVIOContext *pb, const char *tag)
00370 {
00371     ffio_wfourcc(pb, tag);
00372     avio_wl32(pb, 0);
00373     return avio_tell(pb);
00374 }
00375 
00376 void ff_end_tag(AVIOContext *pb, int64_t start)
00377 {
00378     int64_t pos;
00379 
00380     pos = avio_tell(pb);
00381     avio_seek(pb, start - 4, SEEK_SET);
00382     avio_wl32(pb, (uint32_t)(pos - start));
00383     avio_seek(pb, pos, SEEK_SET);
00384 }
00385 
00386 /* WAVEFORMATEX header */
00387 /* returns the size or -1 on error */
00388 int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
00389 {
00390     int bps, blkalign, bytespersec;
00391     int hdrsize = 18;
00392     int waveformatextensible;
00393     uint8_t temp[256];
00394     uint8_t *riff_extradata= temp;
00395     uint8_t *riff_extradata_start= temp;
00396 
00397     if(!enc->codec_tag || enc->codec_tag > 0xffff)
00398         return -1;
00399     waveformatextensible =   (enc->channels > 2 && enc->channel_layout)
00400                           || enc->sample_rate > 48000
00401                           || av_get_bits_per_sample(enc->codec_id) > 16;
00402 
00403     if (waveformatextensible) {
00404         avio_wl16(pb, 0xfffe);
00405     } else {
00406         avio_wl16(pb, enc->codec_tag);
00407     }
00408     avio_wl16(pb, enc->channels);
00409     avio_wl32(pb, enc->sample_rate);
00410     if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3 || enc->codec_id == CODEC_ID_GSM_MS) {
00411         bps = 0;
00412     } else {
00413         if (!(bps = av_get_bits_per_sample(enc->codec_id))) {
00414             if (enc->bits_per_coded_sample)
00415                 bps = enc->bits_per_coded_sample;
00416             else
00417                 bps = 16; // default to 16
00418         }
00419     }
00420     if(bps != enc->bits_per_coded_sample && enc->bits_per_coded_sample){
00421         av_log(enc, AV_LOG_WARNING, "requested bits_per_coded_sample (%d) and actually stored (%d) differ\n", enc->bits_per_coded_sample, bps);
00422     }
00423 
00424     if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
00425         blkalign = enc->frame_size; //this is wrong, but it seems many demuxers do not work if this is set correctly
00426         //blkalign = 144 * enc->bit_rate/enc->sample_rate;
00427     } else if (enc->codec_id == CODEC_ID_AC3) {
00428             blkalign = 3840; //maximum bytes per frame
00429     } else if (enc->block_align != 0) { /* specified by the codec */
00430         blkalign = enc->block_align;
00431     } else
00432         blkalign = bps * enc->channels / av_gcd(8, bps);
00433     if (enc->codec_id == CODEC_ID_PCM_U8 ||
00434         enc->codec_id == CODEC_ID_PCM_S24LE ||
00435         enc->codec_id == CODEC_ID_PCM_S32LE ||
00436         enc->codec_id == CODEC_ID_PCM_F32LE ||
00437         enc->codec_id == CODEC_ID_PCM_F64LE ||
00438         enc->codec_id == CODEC_ID_PCM_S16LE) {
00439         bytespersec = enc->sample_rate * blkalign;
00440     } else {
00441         bytespersec = enc->bit_rate / 8;
00442     }
00443     avio_wl32(pb, bytespersec); /* bytes per second */
00444     avio_wl16(pb, blkalign); /* block align */
00445     avio_wl16(pb, bps); /* bits per sample */
00446     if (enc->codec_id == CODEC_ID_MP3) {
00447         hdrsize += 12;
00448         bytestream_put_le16(&riff_extradata, 1);    /* wID */
00449         bytestream_put_le32(&riff_extradata, 2);    /* fdwFlags */
00450         bytestream_put_le16(&riff_extradata, 1152); /* nBlockSize */
00451         bytestream_put_le16(&riff_extradata, 1);    /* nFramesPerBlock */
00452         bytestream_put_le16(&riff_extradata, 1393); /* nCodecDelay */
00453     } else if (enc->codec_id == CODEC_ID_MP2) {
00454         hdrsize += 22;
00455         bytestream_put_le16(&riff_extradata, 2);                          /* fwHeadLayer */
00456         bytestream_put_le32(&riff_extradata, enc->bit_rate);              /* dwHeadBitrate */
00457         bytestream_put_le16(&riff_extradata, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
00458         bytestream_put_le16(&riff_extradata, 0);                          /* fwHeadModeExt */
00459         bytestream_put_le16(&riff_extradata, 1);                          /* wHeadEmphasis */
00460         bytestream_put_le16(&riff_extradata, 16);                         /* fwHeadFlags */
00461         bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSLow */
00462         bytestream_put_le32(&riff_extradata, 0);                          /* dwPTSHigh */
00463     } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
00464         hdrsize += 2;
00465         bytestream_put_le16(&riff_extradata, enc->frame_size); /* wSamplesPerBlock */
00466     } else if(enc->extradata_size){
00467         riff_extradata_start= enc->extradata;
00468         riff_extradata= enc->extradata + enc->extradata_size;
00469         hdrsize += enc->extradata_size;
00470     }
00471     if(waveformatextensible) {                                    /* write WAVEFORMATEXTENSIBLE extensions */
00472         hdrsize += 22;
00473         avio_wl16(pb, riff_extradata - riff_extradata_start + 22); /* 22 is WAVEFORMATEXTENSIBLE size */
00474         avio_wl16(pb, enc->bits_per_coded_sample);                 /* ValidBitsPerSample || SamplesPerBlock || Reserved */
00475         avio_wl32(pb, enc->channel_layout);                        /* dwChannelMask */
00476         avio_wl32(pb, enc->codec_tag);                             /* GUID + next 3 */
00477         avio_wl32(pb, 0x00100000);
00478         avio_wl32(pb, 0xAA000080);
00479         avio_wl32(pb, 0x719B3800);
00480     } else {
00481         avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
00482     }
00483     avio_write(pb, riff_extradata_start, riff_extradata - riff_extradata_start);
00484     if(hdrsize&1){
00485         hdrsize++;
00486         avio_w8(pb, 0);
00487     }
00488 
00489     return hdrsize;
00490 }
00491 
00492 /* BITMAPINFOHEADER header */
00493 void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf)
00494 {
00495     avio_wl32(pb, 40 + enc->extradata_size); /* size */
00496     avio_wl32(pb, enc->width);
00497     //We always store RGB TopDown
00498     avio_wl32(pb, enc->codec_tag ? enc->height : -enc->height);
00499     avio_wl16(pb, 1); /* planes */
00500 
00501     avio_wl16(pb, enc->bits_per_coded_sample ? enc->bits_per_coded_sample : 24); /* depth */
00502     /* compression type */
00503     avio_wl32(pb, enc->codec_tag);
00504     avio_wl32(pb, enc->width * enc->height * 3);
00505     avio_wl32(pb, 0);
00506     avio_wl32(pb, 0);
00507     avio_wl32(pb, 0);
00508     avio_wl32(pb, 0);
00509 
00510     avio_write(pb, enc->extradata, enc->extradata_size);
00511 
00512     if (!for_asf && enc->extradata_size & 1)
00513         avio_w8(pb, 0);
00514 }
00515 #endif //CONFIG_MUXERS
00516 
00517 #if CONFIG_DEMUXERS
00518 /* We could be given one of the three possible structures here:
00519  * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
00520  * is an expansion of the previous one with the fields added
00521  * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
00522  * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself
00523  * an openended structure.
00524  */
00525 int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)
00526 {
00527     int id;
00528 
00529     id = avio_rl16(pb);
00530     codec->codec_type = AVMEDIA_TYPE_AUDIO;
00531     codec->codec_tag = id;
00532     codec->channels = avio_rl16(pb);
00533     codec->sample_rate = avio_rl32(pb);
00534     codec->bit_rate = avio_rl32(pb) * 8;
00535     codec->block_align = avio_rl16(pb);
00536     if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */
00537         codec->bits_per_coded_sample = 8;
00538     }else
00539         codec->bits_per_coded_sample = avio_rl16(pb);
00540     if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */
00541         int cbSize = avio_rl16(pb); /* cbSize */
00542         size -= 18;
00543         cbSize = FFMIN(size, cbSize);
00544         if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */
00545             codec->bits_per_coded_sample = avio_rl16(pb);
00546             codec->channel_layout = avio_rl32(pb); /* dwChannelMask */
00547             id = avio_rl32(pb); /* 4 first bytes of GUID */
00548             avio_skip(pb, 12); /* skip end of GUID */
00549             cbSize -= 22;
00550             size -= 22;
00551         }
00552         codec->extradata_size = cbSize;
00553         if (cbSize > 0) {
00554             av_free(codec->extradata);
00555             codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
00556             if (!codec->extradata)
00557                 return AVERROR(ENOMEM);
00558             avio_read(pb, codec->extradata, codec->extradata_size);
00559             size -= cbSize;
00560         }
00561 
00562         /* It is possible for the chunk to contain garbage at the end */
00563         if (size > 0)
00564             avio_skip(pb, size);
00565     }
00566     codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);
00567     if (codec->codec_id == CODEC_ID_AAC_LATM) {
00568         /* channels and sample_rate values are those prior to applying SBR and/or PS */
00569         codec->channels    = 0;
00570         codec->sample_rate = 0;
00571     }
00572     /* override bits_per_coded_sample for G.726 */
00573     if (codec->codec_id == CODEC_ID_ADPCM_G726)
00574         codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;
00575 
00576     return 0;
00577 }
00578 
00579 
00580 enum CodecID ff_wav_codec_get_id(unsigned int tag, int bps)
00581 {
00582     enum CodecID id;
00583     id = ff_codec_get_id(ff_codec_wav_tags, tag);
00584     if (id <= 0)
00585         return id;
00586     /* handle specific u8 codec */
00587     if (id == CODEC_ID_PCM_S16LE && bps == 8)
00588         id = CODEC_ID_PCM_U8;
00589     if (id == CODEC_ID_PCM_S16LE && bps == 24)
00590         id = CODEC_ID_PCM_S24LE;
00591     if (id == CODEC_ID_PCM_S16LE && bps == 32)
00592         id = CODEC_ID_PCM_S32LE;
00593     if (id == CODEC_ID_PCM_F32LE && bps == 64)
00594         id = CODEC_ID_PCM_F64LE;
00595     if (id == CODEC_ID_ADPCM_IMA_WAV && bps == 8)
00596         id = CODEC_ID_PCM_ZORK;
00597     return id;
00598 }
00599 
00600 int ff_get_bmp_header(AVIOContext *pb, AVStream *st)
00601 {
00602     int tag1;
00603     avio_rl32(pb); /* size */
00604     st->codec->width = avio_rl32(pb);
00605     st->codec->height = (int32_t)avio_rl32(pb);
00606     avio_rl16(pb); /* planes */
00607     st->codec->bits_per_coded_sample= avio_rl16(pb); /* depth */
00608     tag1 = avio_rl32(pb);
00609     avio_rl32(pb); /* ImageSize */
00610     avio_rl32(pb); /* XPelsPerMeter */
00611     avio_rl32(pb); /* YPelsPerMeter */
00612     avio_rl32(pb); /* ClrUsed */
00613     avio_rl32(pb); /* ClrImportant */
00614     return tag1;
00615 }
00616 #endif // CONFIG_DEMUXERS
00617 
00618 void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssize, int *au_scale)
00619 {
00620     int gcd;
00621 
00622     *au_ssize= stream->block_align;
00623     if(stream->frame_size && stream->sample_rate){
00624         *au_scale=stream->frame_size;
00625         *au_rate= stream->sample_rate;
00626     }else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
00627              stream->codec_type == AVMEDIA_TYPE_DATA ||
00628              stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
00629         *au_scale= stream->time_base.num;
00630         *au_rate = stream->time_base.den;
00631     }else{
00632         *au_scale= stream->block_align ? stream->block_align*8 : 8;
00633         *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
00634     }
00635     gcd= av_gcd(*au_scale, *au_rate);
00636     *au_scale /= gcd;
00637     *au_rate /= gcd;
00638 }
00639 
00640 int ff_read_riff_info(AVFormatContext *s, int64_t size)
00641 {
00642     int64_t start, end, cur;
00643     AVIOContext *pb = s->pb;
00644 
00645     start = avio_tell(pb);
00646     end = start + size;
00647 
00648     while ((cur = avio_tell(pb)) >= 0 && cur <= end - 8 /* = tag + size */) {
00649         uint32_t chunk_code;
00650         int64_t chunk_size;
00651         char key[5] = {0};
00652         char *value;
00653 
00654         chunk_code = avio_rl32(pb);
00655         chunk_size = avio_rl32(pb);
00656         if (chunk_size > end || end - chunk_size < cur || chunk_size == UINT_MAX) {
00657             av_log(s, AV_LOG_ERROR, "too big INFO subchunk\n");
00658             return AVERROR_INVALIDDATA;
00659         }
00660 
00661         chunk_size += (chunk_size & 1);
00662 
00663         value = av_malloc(chunk_size + 1);
00664         if (!value) {
00665             av_log(s, AV_LOG_ERROR, "out of memory, unable to read INFO tag\n");
00666             return AVERROR(ENOMEM);
00667         }
00668 
00669         AV_WL32(key, chunk_code);
00670 
00671         if (avio_read(pb, value, chunk_size) != chunk_size) {
00672             av_freep(key);
00673             av_freep(value);
00674             av_log(s, AV_LOG_ERROR, "premature end of file while reading INFO tag\n");
00675             return AVERROR_INVALIDDATA;
00676         }
00677 
00678         value[chunk_size] = 0;
00679 
00680         av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
00681     }
00682 
00683     return 0;
00684 }
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