147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*
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* Copyright 2022 Huw Davies
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "audioclient.h"
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struct alsa_stream
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{
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snd_pcm_t *pcm_handle;
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snd_pcm_uframes_t alsa_bufsize_frames, alsa_period_frames, safe_rewind_frames;
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snd_pcm_hw_params_t *hw_params; /* does not hold state between calls */
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snd_pcm_format_t alsa_format;
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LARGE_INTEGER last_period_time;
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WAVEFORMATEX *fmt;
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DWORD flags;
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AUDCLNT_SHAREMODE share;
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EDataFlow flow;
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HANDLE event;
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BOOL need_remapping;
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int alsa_channels;
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int alsa_channel_map[32];
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BOOL started;
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REFERENCE_TIME mmdev_period_rt;
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UINT64 written_frames, last_pos_frames;
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UINT32 bufsize_frames, held_frames, tmp_buffer_frames, mmdev_period_frames;
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snd_pcm_uframes_t remapping_buf_frames;
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UINT32 lcl_offs_frames; /* offs into local_buffer where valid data starts */
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UINT32 wri_offs_frames; /* where to write fresh data in local_buffer */
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UINT32 hidden_frames; /* ALSA reserve to ensure continuous rendering */
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UINT32 vol_adjusted_frames; /* Frames we've already adjusted the volume of but didn't write yet */
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UINT32 data_in_alsa_frames;
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BYTE *local_buffer, *tmp_buffer, *remapping_buf, *silence_buf;
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LONG32 getbuf_last; /* <0 when using tmp_buffer */
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float *vols;
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pthread_mutex_t lock;
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};
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struct endpoint
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{
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WCHAR *name;
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char *device;
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};
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struct get_endpoint_ids_params
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{
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EDataFlow flow;
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struct endpoint *endpoints;
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unsigned int size;
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HRESULT result;
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unsigned int num;
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unsigned int default_idx;
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};
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struct create_stream_params
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{
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const char *alsa_name;
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EDataFlow flow;
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AUDCLNT_SHAREMODE share;
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DWORD flags;
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REFERENCE_TIME duration;
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REFERENCE_TIME period;
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const WAVEFORMATEX *fmt;
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HRESULT result;
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struct alsa_stream **stream;
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};
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struct release_stream_params
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{
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struct alsa_stream *stream;
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HRESULT result;
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};
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struct is_format_supported_params
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{
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const char *alsa_name;
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EDataFlow flow;
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AUDCLNT_SHAREMODE share;
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const WAVEFORMATEX *fmt_in;
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WAVEFORMATEXTENSIBLE *fmt_out;
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HRESULT result;
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};
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struct get_mix_format_params
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{
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const char *alsa_name;
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EDataFlow flow;
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WAVEFORMATEXTENSIBLE *fmt;
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HRESULT result;
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};
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struct get_buffer_size_params
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{
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struct alsa_stream *stream;
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HRESULT result;
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UINT32 *size;
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};
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struct get_latency_params
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{
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struct alsa_stream *stream;
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HRESULT result;
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REFERENCE_TIME *latency;
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};
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struct get_current_padding_params
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{
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struct alsa_stream *stream;
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HRESULT result;
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UINT32 *padding;
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};
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enum alsa_funcs
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{
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alsa_get_endpoint_ids,
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alsa_create_stream,
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alsa_release_stream,
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alsa_is_format_supported,
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alsa_get_mix_format,
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alsa_get_buffer_size,
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alsa_get_latency,
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alsa_get_current_padding,
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};
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extern unixlib_handle_t alsa_handle;
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#define ALSA_CALL(func, params) __wine_unix_call(alsa_handle, alsa_ ## func, params)
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