From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/libavformat/flv.h | 138 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 138 insertions(+) create mode 100644 ffmpeg/libavformat/flv.h (limited to 'ffmpeg/libavformat/flv.h') diff --git a/ffmpeg/libavformat/flv.h b/ffmpeg/libavformat/flv.h new file mode 100644 index 0000000..db9468f --- /dev/null +++ b/ffmpeg/libavformat/flv.h @@ -0,0 +1,138 @@ +/* + * FLV common header + * + * Copyright (c) 2006 The FFmpeg Project + * + * 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 + */ + +/** + * @file + * FLV common header + */ + +#ifndef AVFORMAT_FLV_H +#define AVFORMAT_FLV_H + +/* offsets for packed values */ +#define FLV_AUDIO_SAMPLESSIZE_OFFSET 1 +#define FLV_AUDIO_SAMPLERATE_OFFSET 2 +#define FLV_AUDIO_CODECID_OFFSET 4 + +#define FLV_VIDEO_FRAMETYPE_OFFSET 4 + +/* bitmasks to isolate specific values */ +#define FLV_AUDIO_CHANNEL_MASK 0x01 +#define FLV_AUDIO_SAMPLESIZE_MASK 0x02 +#define FLV_AUDIO_SAMPLERATE_MASK 0x0c +#define FLV_AUDIO_CODECID_MASK 0xf0 + +#define FLV_VIDEO_CODECID_MASK 0x0f +#define FLV_VIDEO_FRAMETYPE_MASK 0xf0 + +#define AMF_END_OF_OBJECT 0x09 + +#define KEYFRAMES_TAG "keyframes" +#define KEYFRAMES_TIMESTAMP_TAG "times" +#define KEYFRAMES_BYTEOFFSET_TAG "filepositions" + + +enum { + FLV_HEADER_FLAG_HASVIDEO = 1, + FLV_HEADER_FLAG_HASAUDIO = 4, +}; + +enum { + FLV_TAG_TYPE_AUDIO = 0x08, + FLV_TAG_TYPE_VIDEO = 0x09, + FLV_TAG_TYPE_META = 0x12, +}; + +enum { + FLV_STREAM_TYPE_VIDEO, + FLV_STREAM_TYPE_AUDIO, + FLV_STREAM_TYPE_DATA, + FLV_STREAM_TYPE_NB, +}; + +enum { + FLV_MONO = 0, + FLV_STEREO = 1, +}; + +enum { + FLV_SAMPLESSIZE_8BIT = 0, + FLV_SAMPLESSIZE_16BIT = 1 << FLV_AUDIO_SAMPLESSIZE_OFFSET, +}; + +enum { + FLV_SAMPLERATE_SPECIAL = 0, /**< signifies 5512Hz and 8000Hz in the case of NELLYMOSER */ + FLV_SAMPLERATE_11025HZ = 1 << FLV_AUDIO_SAMPLERATE_OFFSET, + FLV_SAMPLERATE_22050HZ = 2 << FLV_AUDIO_SAMPLERATE_OFFSET, + FLV_SAMPLERATE_44100HZ = 3 << FLV_AUDIO_SAMPLERATE_OFFSET, +}; + +enum { + FLV_CODECID_PCM = 0, + FLV_CODECID_ADPCM = 1 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_MP3 = 2 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_PCM_LE = 3 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_NELLYMOSER_16KHZ_MONO = 4 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_NELLYMOSER_8KHZ_MONO = 5 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_NELLYMOSER = 6 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_PCM_ALAW = 7 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_PCM_MULAW = 8 << FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_AAC = 10<< FLV_AUDIO_CODECID_OFFSET, + FLV_CODECID_SPEEX = 11<< FLV_AUDIO_CODECID_OFFSET, +}; + +enum { + FLV_CODECID_H263 = 2, + FLV_CODECID_SCREEN = 3, + FLV_CODECID_VP6 = 4, + FLV_CODECID_VP6A = 5, + FLV_CODECID_SCREEN2 = 6, + FLV_CODECID_H264 = 7, + FLV_CODECID_REALH263= 8, + FLV_CODECID_MPEG4 = 9, +}; + +enum { + FLV_FRAME_KEY = 1 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< key frame (for AVC, a seekable frame) + FLV_FRAME_INTER = 2 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< inter frame (for AVC, a non-seekable frame) + FLV_FRAME_DISP_INTER = 3 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< disposable inter frame (H.263 only) + FLV_FRAME_GENERATED_KEY = 4 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< generated key frame (reserved for server use only) + FLV_FRAME_VIDEO_INFO_CMD = 5 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< video info/command frame +}; + +typedef enum { + AMF_DATA_TYPE_NUMBER = 0x00, + AMF_DATA_TYPE_BOOL = 0x01, + AMF_DATA_TYPE_STRING = 0x02, + AMF_DATA_TYPE_OBJECT = 0x03, + AMF_DATA_TYPE_NULL = 0x05, + AMF_DATA_TYPE_UNDEFINED = 0x06, + AMF_DATA_TYPE_REFERENCE = 0x07, + AMF_DATA_TYPE_MIXEDARRAY = 0x08, + AMF_DATA_TYPE_OBJECT_END = 0x09, + AMF_DATA_TYPE_ARRAY = 0x0a, + AMF_DATA_TYPE_DATE = 0x0b, + AMF_DATA_TYPE_LONG_STRING = 0x0c, + AMF_DATA_TYPE_UNSUPPORTED = 0x0d, +} AMFDataType; + +#endif /* AVFORMAT_FLV_H */ -- cgit v1.2.3