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65 lines
2 KiB
C
65 lines
2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Library <2001> Thomas Vander Stichele <thomas@apestaart.org>
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* <2011> Wim Taymans <wim.taymans@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_AUDIO_AUDIO_H__
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#define __GST_AUDIO_AUDIO_H__
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#include <gst/gst.h>
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#include <gst/audio/audio-enumtypes.h>
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#include <gst/audio/audio-format.h>
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#include <gst/audio/audio-channels.h>
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#include <gst/audio/audio-info.h>
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G_BEGIN_DECLS
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/* conversion macros */
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/**
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* GST_FRAMES_TO_CLOCK_TIME:
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* @frames: sample frames
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* @rate: sampling rate
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*
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* Calculate clocktime from sample @frames and @rate.
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*/
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#define GST_FRAMES_TO_CLOCK_TIME(frames, rate) \
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((GstClockTime) gst_util_uint64_scale_round (frames, GST_SECOND, rate))
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/**
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* GST_CLOCK_TIME_TO_FRAMES:
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* @clocktime: clock time
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* @rate: sampling rate
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*
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* Calculate frames from @clocktime and sample @rate.
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*/
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#define GST_CLOCK_TIME_TO_FRAMES(clocktime, rate) \
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gst_util_uint64_scale_round (clocktime, rate, GST_SECOND)
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/*
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* this library defines and implements some helper functions for audio
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* handling
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*/
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GstBuffer * gst_audio_buffer_clip (GstBuffer *buffer, GstSegment *segment,
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gint rate, gint bpf);
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G_END_DECLS
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#endif /* __GST_AUDIO_AUDIO_H__ */
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