| Vidyakumar Athota | 931e7cf | 2020-12-10 12:05:54 +0100 | [diff] [blame] | 1 | /* compress_plugin.h |
| 2 | ** |
| 3 | ** Copyright (c) 2019, The Linux Foundation. All rights reserved. |
| 4 | ** |
| 5 | ** Redistribution and use in source and binary forms, with or without |
| 6 | ** modification, are permitted provided that the following conditions are |
| 7 | ** met: |
| 8 | ** * Redistributions of source code must retain the above copyright |
| 9 | ** notice, this list of conditions and the following disclaimer. |
| 10 | ** * Redistributions in binary form must reproduce the above |
| 11 | ** copyright notice, this list of conditions and the following |
| 12 | ** disclaimer in the documentation and/or other materials provided |
| 13 | ** with the distribution. |
| 14 | ** * Neither the name of The Linux Foundation nor the names of its |
| 15 | ** contributors may be used to endorse or promote products derived |
| 16 | ** from this software without specific prior written permission. |
| 17 | ** |
| 18 | ** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 19 | ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 20 | ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 21 | ** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 22 | ** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 25 | ** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 26 | ** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 27 | ** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 28 | ** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | **/ |
| 30 | |
| 31 | #ifndef __COMPRESS_PLUGIN_H__ |
| 32 | #define __COMPRESS_PLUGIN_H__ |
| 33 | |
| 34 | #include "sound/compress_params.h" |
| 35 | #include "sound/compress_offload.h" |
| 36 | |
| 37 | #define COMPRESS_PLUGIN_OPEN_FN(name) \ |
| 38 | int name##_open(struct compress_plugin **plugin, \ |
| 39 | unsigned int card, \ |
| 40 | unsigned int device, \ |
| 41 | unsigned int flags) |
| 42 | |
| 43 | #define COMPRESS_PLUGIN_OPEN_FN_PTR() \ |
| 44 | int (*plugin_open_fn) (struct compress_plugin **plugin, \ |
| 45 | unsigned int card, \ |
| 46 | unsigned int device, \ |
| 47 | unsigned int flags); |
| 48 | |
| 49 | struct compress_plugin; |
| 50 | |
| 51 | struct compress_plugin_ops { |
| 52 | void (*close) (struct compress_plugin *plugin); |
| 53 | int (*get_caps) (struct compress_plugin *plugin, |
| 54 | struct snd_compr_caps *caps); |
| 55 | int (*set_params) (struct compress_plugin *plugin, |
| 56 | struct snd_compr_params *params); |
| 57 | int (*avail) (struct compress_plugin *plugin, |
| 58 | struct snd_compr_avail *avail); |
| 59 | int (*tstamp) (struct compress_plugin *plugin, |
| 60 | struct snd_compr_tstamp *tstamp); |
| 61 | int (*write) (struct compress_plugin *plugin, |
| 62 | const void *buf, size_t size); |
| 63 | int (*read) (struct compress_plugin *plugin, |
| 64 | void *buf, size_t size); |
| 65 | int (*start) (struct compress_plugin *plugin); |
| 66 | int (*stop) (struct compress_plugin *plugin); |
| 67 | int (*pause) (struct compress_plugin *plugin); |
| 68 | int (*resume) (struct compress_plugin *plugin); |
| 69 | int (*drain) (struct compress_plugin *plugin); |
| 70 | int (*partial_drain) (struct compress_plugin *plugin); |
| 71 | int (*next_track) (struct compress_plugin *plugin); |
| 72 | int (*ioctl) (struct compress_plugin *plugin, int cmd, ...); |
| 73 | int (*poll) (struct compress_plugin *plugin, |
| 74 | struct pollfd *fds, nfds_t nfds, int timeout); |
| 75 | }; |
| 76 | |
| 77 | struct compress_plugin { |
| 78 | unsigned int card; |
| 79 | |
| 80 | struct compress_plugin_ops *ops; |
| 81 | |
| 82 | void *node; |
| 83 | int mode; |
| 84 | void *priv; |
| 85 | |
| 86 | unsigned int state; |
| 87 | }; |
| 88 | |
| 89 | #endif /* end of __COMPRESS_PLUGIN_H__ */ |