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85 lines
3.3 KiB
C
85 lines
3.3 KiB
C
/*
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* Copyright (C) 2001 CodeFactory AB
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* Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
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* Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu>
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
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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 Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_ALSA_H__
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#define __GST_ALSA_H__
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#define ALSA_PCM_NEW_HW_PARAMS_API
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#define ALSA_PCM_NEW_SW_PARAMS_API
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#include <alsa/asoundlib.h>
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#include <alsa/control.h>
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#include <alsa/error.h>
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#define GST_CHECK_ALSA_VERSION(major,minor,micro) \
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(SND_LIB_MAJOR > (major) || \
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(SND_LIB_MAJOR == (major) && SND_LIB_MINOR > (minor)) || \
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(SND_LIB_MAJOR == (major) && SND_LIB_MINOR == (minor) && \
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SND_LIB_SUBMINOR >= (micro)))
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#define PASSTHROUGH_CAPS \
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"audio/x-ac3, framed = (boolean) true;" \
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"audio/x-eac3, framed = (boolean) true; " \
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"audio/x-dts, framed = (boolean) true, " \
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"block-size = (int) { 512, 1024, 2048 }; " \
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"audio/mpeg, mpegversion = (int) 1, " \
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"mpegaudioversion = (int) [ 1, 3 ], parsed = (boolean) true;"
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GST_DEBUG_CATEGORY_EXTERN (alsa_debug);
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#define GST_CAT_DEFAULT alsa_debug
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snd_pcm_t * gst_alsa_open_iec958_pcm (GstObject * obj, gchar *device);
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GstCaps * gst_alsa_probe_supported_formats (GstObject * obj,
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gchar * device,
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snd_pcm_t * handle,
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const GstCaps * template_caps);
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gchar * gst_alsa_find_device_name (GstObject * obj,
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const gchar * device,
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snd_pcm_t * handle,
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snd_pcm_stream_t stream);
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gchar * gst_alsa_find_card_name (GstObject * obj,
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const gchar * devcard,
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snd_pcm_stream_t stream);
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void gst_alsa_add_channel_reorder_map (GstObject * obj,
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GstCaps * caps);
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extern const GstAudioChannelPosition alsa_position[][8];
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#ifdef SND_CHMAP_API_VERSION
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gboolean alsa_chmap_to_channel_positions (const snd_pcm_chmap_t *chmap,
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GstAudioChannelPosition *pos);
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void alsa_detect_channels_mapping (GstObject * obj,
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snd_pcm_t * handle,
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GstAudioRingBufferSpec * spec,
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guint channels,
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GstAudioRingBuffer * buf);
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#endif
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#endif /* __GST_ALSA_H__ */
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