mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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27acab7532
Reserve 0,0 for stack allocated mem that we never free Improve allocation in the link Parse format and properties in-line, there is no need to allocate memory. Improve buffer cleanup in alsa Add timestamps and offset to alsa
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
/* Spa ALSA Sink
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* Copyright (C) 2016 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __SPA_ALSA_UTILS_H__
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#define __SPA_ALSA_UTILS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#include <asoundlib.h>
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#include <spa/queue.h>
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#include <spa/node.h>
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#include <spa/audio/format.h>
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typedef struct _SpaALSAState SpaALSAState;
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typedef struct _SpaALSABuffer SpaALSABuffer;
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typedef struct {
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SpaProps props;
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char device[64];
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char device_name[128];
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char card_name[128];
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uint32_t buffer_time;
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uint32_t period_time;
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bool period_event;
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} SpaALSAProps;
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struct _SpaALSABuffer {
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SpaBuffer buffer;
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SpaMeta metas[2];
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SpaMetaHeader header;
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SpaMetaRingbuffer ringbuffer;
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SpaData datas[1];
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SpaBuffer *outbuf;
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SpaMetaHeader *h;
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void *ptr;
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bool outstanding;
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SpaALSABuffer *next;
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};
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struct _SpaALSAState {
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SpaHandle handle;
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SpaNode node;
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SpaClock clock;
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snd_pcm_stream_t stream;
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snd_output_t *output;
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SpaNodeEventCallback event_cb;
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void *user_data;
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SpaALSAProps props[2];
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bool opened;
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snd_pcm_t *hndl;
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bool have_format;
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SpaFormatAudio query_format;
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SpaFormatAudio current_format;
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snd_pcm_sframes_t buffer_frames;
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snd_pcm_sframes_t period_frames;
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snd_pcm_format_t format;
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int rate;
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int channels;
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size_t frame_size;
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SpaPortInfo info;
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SpaAllocParam *params[1];
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SpaAllocParamBuffers param_buffers;
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SpaPortStatus status;
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bool have_buffers;
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SpaMemory *alloc_bufmem;
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SpaMemory *alloc_mem;
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SpaALSABuffer *alloc_buffers;
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unsigned int n_buffers;
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SpaQueue free;
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SpaQueue ready;
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bool running;
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SpaPollFd fds[16];
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SpaPollItem poll;
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int64_t sample_count;
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int64_t last_ticks;
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int64_t last_monotonic;
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};
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int spa_alsa_set_format (SpaALSAState *state,
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SpaFormatAudio *fmt,
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SpaPortFormatFlags flags);
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int spa_alsa_start (SpaALSAState *state);
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int spa_alsa_stop (SpaALSAState *state);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* __SPA_ALSA_UTILS_H__ */
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