| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103 |
- /* GStreamer
- * Copyright (C) 2004 Ronald Bultje <rbultje@ronald.bitfreak.net>
- * (C) 2015 Wim Taymans <wim.taymans@gmail.com>
- *
- * audioconverter.h: audio format conversion library
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
- #ifndef __GST_AUDIO_CONVERTER_H__
- #define __GST_AUDIO_CONVERTER_H__
- #include <gst/gst.h>
- #include <gst/audio/audio.h>
- typedef struct _GstAudioConverter GstAudioConverter;
- /**
- * GST_AUDIO_CONVERTER_OPT_DITHER_METHOD:
- *
- * #GST_TYPE_AUDIO_DITHER_METHOD, The dither method to use when
- * changing bit depth.
- * Default is #GST_AUDIO_DITHER_NONE.
- */
- #define GST_AUDIO_CONVERTER_OPT_DITHER_METHOD "GstAudioConverter.dither-method"
- /**
- * GST_AUDIO_CONVERTER_OPT_NOISE_SHAPING_METHOD:
- *
- * #GST_TYPE_AUDIO_NOISE_SHAPING_METHOD, The noise shaping method to use
- * to mask noise from quantization errors.
- * Default is #GST_AUDIO_NOISE_SHAPING_NONE.
- */
- #define GST_AUDIO_CONVERTER_OPT_NOISE_SHAPING_METHOD "GstAudioConverter.noise-shaping-method"
- /**
- * GST_AUDIO_CONVERTER_OPT_QUANTIZATION:
- *
- * #G_TYPE_UINT, The quantization amount. Components will be
- * quantized to multiples of this value.
- * Default is 1
- */
- #define GST_AUDIO_CONVERTER_OPT_QUANTIZATION "GstAudioConverter.quantization"
- /**
- * GstAudioConverterFlags:
- * @GST_AUDIO_CONVERTER_FLAG_NONE: no flag
- * @GST_AUDIO_CONVERTER_FLAG_IN_WRITABLE: the input sample arrays are writable and can be
- * used as temporary storage during conversion.
- * @GST_AUDIO_CONVERTER_FLAG_VARIABLE_RATE: allow arbitrary rate updates with
- * gst_audio_converter_update_config().
- *
- * Extra flags passed to gst_audio_converter_new() and gst_audio_converter_samples().
- */
- typedef enum {
- GST_AUDIO_CONVERTER_FLAG_NONE = 0,
- GST_AUDIO_CONVERTER_FLAG_IN_WRITABLE = (1 << 0),
- GST_AUDIO_CONVERTER_FLAG_VARIABLE_RATE = (1 << 1)
- } GstAudioConverterFlags;
- GstAudioConverter * gst_audio_converter_new (GstAudioConverterFlags flags,
- GstAudioInfo *in_info,
- GstAudioInfo *out_info,
- GstStructure *config);
- void gst_audio_converter_free (GstAudioConverter * convert);
- void gst_audio_converter_reset (GstAudioConverter * convert);
- gboolean gst_audio_converter_update_config (GstAudioConverter * convert,
- gint in_rate, gint out_rate,
- GstStructure *config);
- const GstStructure * gst_audio_converter_get_config (GstAudioConverter * convert,
- gint *in_rate, gint *out_rate);
- gsize gst_audio_converter_get_out_frames (GstAudioConverter *convert,
- gsize in_frames);
- gsize gst_audio_converter_get_in_frames (GstAudioConverter *convert,
- gsize out_frames);
- gsize gst_audio_converter_get_max_latency (GstAudioConverter *convert);
- gboolean gst_audio_converter_samples (GstAudioConverter * convert,
- GstAudioConverterFlags flags,
- gpointer in[], gsize in_frames,
- gpointer out[], gsize out_frames);
- #endif /* __GST_AUDIO_CONVERTER_H__ */
|
