1 /* GStreamer 2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> 3 * Library <2001> Thomas Vander Stichele <thomas@apestaart.org> 4 * <2011> Wim Taymans <wim.taymans@gmail.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #ifndef __GST_AUDIO_AUDIO_H__ 23 #define __GST_AUDIO_AUDIO_H__ 24 25 #include <gst/gst.h> 26 #include <gst/audio/audio-prelude.h> 27 #include <gst/audio/audio-enumtypes.h> 28 #include <gst/audio/audio-format.h> 29 #include <gst/audio/audio-channels.h> 30 #include <gst/audio/audio-channel-mixer.h> 31 #include <gst/audio/audio-info.h> 32 #include <gst/audio/audio-buffer.h> 33 #include <gst/audio/audio-quantize.h> 34 #include <gst/audio/audio-converter.h> 35 #include <gst/audio/audio-resampler.h> 36 #include <gst/audio/gstaudiostreamalign.h> 37 #include <gst/audio/gstaudioaggregator.h> 38 39 G_BEGIN_DECLS 40 41 /* conversion macros */ 42 /** 43 * GST_FRAMES_TO_CLOCK_TIME: 44 * @frames: sample frames 45 * @rate: sampling rate 46 * 47 * Calculate clocktime from sample @frames and @rate. 48 */ 49 #define GST_FRAMES_TO_CLOCK_TIME(frames, rate) \ 50 ((GstClockTime) gst_util_uint64_scale_round (frames, GST_SECOND, rate)) 51 52 /** 53 * GST_CLOCK_TIME_TO_FRAMES: 54 * @clocktime: clock time 55 * @rate: sampling rate 56 * 57 * Calculate frames from @clocktime and sample @rate. 58 */ 59 #define GST_CLOCK_TIME_TO_FRAMES(clocktime, rate) \ 60 gst_util_uint64_scale_round (clocktime, rate, GST_SECOND) 61 62 /* metadata macros */ 63 64 /** 65 * GST_META_TAG_AUDIO_STR: 66 * 67 * This metadata is relevant for audio streams. 68 * 69 * Since: 1.2 70 */ 71 #define GST_META_TAG_AUDIO_STR "audio" 72 /** 73 * GST_META_TAG_AUDIO_CHANNELS_STR: 74 * 75 * This metadata stays relevant as long as channels are unchanged. 76 * 77 * Since: 1.2 78 */ 79 #define GST_META_TAG_AUDIO_CHANNELS_STR "channels" 80 81 /** 82 * GST_META_TAG_AUDIO_RATE_STR: 83 * 84 * This metadata stays relevant as long as sample rate is unchanged. 85 * 86 * Since: 1.8 87 */ 88 #define GST_META_TAG_AUDIO_RATE_STR "rate" 89 90 /* 91 * this library defines and implements some helper functions for audio 92 * handling 93 */ 94 95 GST_AUDIO_API 96 GstBuffer * gst_audio_buffer_clip (GstBuffer *buffer, 97 const GstSegment *segment, 98 gint rate, gint bpf); 99 100 GST_AUDIO_API 101 GstBuffer * gst_audio_buffer_truncate (GstBuffer *buffer, 102 gint bpf, gsize trim, gsize samples); 103 104 G_END_DECLS 105 106 #include <gst/audio/gstaudioringbuffer.h> 107 #include <gst/audio/gstaudioclock.h> 108 #include <gst/audio/gstaudiofilter.h> 109 #include <gst/audio/gstaudiocdsrc.h> 110 #include <gst/audio/gstaudiodecoder.h> 111 #include <gst/audio/gstaudioencoder.h> 112 #include <gst/audio/gstaudiobasesink.h> 113 #include <gst/audio/gstaudiobasesrc.h> 114 #include <gst/audio/gstaudiometa.h> 115 #include <gst/audio/gstaudiosink.h> 116 #include <gst/audio/gstaudiosrc.h> 117 #include <gst/audio/streamvolume.h> 118 #include <gst/audio/gstaudioiec61937.h> 119 120 #endif /* __GST_AUDIO_AUDIO_H__ */ 121