From 8079d2ec088ceed7773c004953f9870262358bed Mon Sep 17 00:00:00 2001 From: Anssi Hannula Date: Wed, 10 Nov 2010 00:04:12 +0000 Subject: Move code to be used by the IEC 61937 demuxer from spifenc.c into common files spdif.h and spdif.c. Patch by Anssi Hannula, anssi d hannula a iki d fi Originally committed as revision 25715 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/spdif.h | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 libavformat/spdif.h (limited to 'libavformat/spdif.h') diff --git a/libavformat/spdif.h b/libavformat/spdif.h new file mode 100644 index 0000000000..252eda9643 --- /dev/null +++ b/libavformat/spdif.h @@ -0,0 +1,57 @@ +/* + * IEC 61937 common header + * Copyright (c) 2009 Bartlomiej Wolowiec + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include + +#define SYNCWORD1 0xF872 +#define SYNCWORD2 0x4E1F +#define BURST_HEADER_SIZE 0x8 + +enum IEC958DataType { + IEC958_AC3 = 0x01, ///< AC-3 data + IEC958_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1 + IEC958_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension + IEC958_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension + IEC958_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS + IEC958_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency + IEC958_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency + IEC958_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency + IEC958_DTS1 = 0x0B, ///< DTS type I (512 samples) + IEC958_DTS2 = 0x0C, ///< DTS type II (1024 samples) + IEC958_DTS3 = 0x0D, ///< DTS type III (2048 samples) + IEC958_ATRAC = 0x0E, ///< Atrac data + IEC958_ATRAC3 = 0x0F, ///< Atrac 3 data + IEC958_ATRACX = 0x10, ///< Atrac 3 plus data + IEC958_DTSHD = 0x11, ///< DTS HD data + IEC958_WMAPRO = 0x12, ///< WMA 9 Professional data + IEC958_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency + IEC958_MPEG2_AAC_LSF_4096 = 0x13 | 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency + IEC958_EAC3 = 0x15, ///< E-AC-3 data + IEC958_TRUEHD = 0x16, ///< TrueHD data +}; + +static const uint16_t spdif_mpeg_pkt_offset[2][3] = { + //LAYER1 LAYER2 LAYER3 + { 3072, 9216, 4608 }, // MPEG2 LSF + { 1536, 4608, 4608 }, // MPEG1 +}; + +void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w); -- cgit v1.2.3