external: tinycompress: add support for compress plugins
Add plugin support to use vendor specific compress implementation
Bug: 166667071
Test: manual offload playback test
Test: cts AudioTrackOffloadTest
CRs-Fixed: 2563258
Change-Id: I71f588b9ed84b62d3b1b08dae7ce65f8fa649e6a
diff --git a/include/tinycompress/compress_plugin.h b/include/tinycompress/compress_plugin.h
new file mode 100644
index 0000000..abd59f2
--- /dev/null
+++ b/include/tinycompress/compress_plugin.h
@@ -0,0 +1,89 @@
+/* compress_plugin.h
+**
+** Copyright (c) 2019, The Linux Foundation. All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above
+** copyright notice, this list of conditions and the following
+** disclaimer in the documentation and/or other materials provided
+** with the distribution.
+** * Neither the name of The Linux Foundation nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+**/
+
+#ifndef __COMPRESS_PLUGIN_H__
+#define __COMPRESS_PLUGIN_H__
+
+#include "sound/compress_params.h"
+#include "sound/compress_offload.h"
+
+#define COMPRESS_PLUGIN_OPEN_FN(name) \
+ int name##_open(struct compress_plugin **plugin, \
+ unsigned int card, \
+ unsigned int device, \
+ unsigned int flags)
+
+#define COMPRESS_PLUGIN_OPEN_FN_PTR() \
+ int (*plugin_open_fn) (struct compress_plugin **plugin, \
+ unsigned int card, \
+ unsigned int device, \
+ unsigned int flags);
+
+struct compress_plugin;
+
+struct compress_plugin_ops {
+ void (*close) (struct compress_plugin *plugin);
+ int (*get_caps) (struct compress_plugin *plugin,
+ struct snd_compr_caps *caps);
+ int (*set_params) (struct compress_plugin *plugin,
+ struct snd_compr_params *params);
+ int (*avail) (struct compress_plugin *plugin,
+ struct snd_compr_avail *avail);
+ int (*tstamp) (struct compress_plugin *plugin,
+ struct snd_compr_tstamp *tstamp);
+ int (*write) (struct compress_plugin *plugin,
+ const void *buf, size_t size);
+ int (*read) (struct compress_plugin *plugin,
+ void *buf, size_t size);
+ int (*start) (struct compress_plugin *plugin);
+ int (*stop) (struct compress_plugin *plugin);
+ int (*pause) (struct compress_plugin *plugin);
+ int (*resume) (struct compress_plugin *plugin);
+ int (*drain) (struct compress_plugin *plugin);
+ int (*partial_drain) (struct compress_plugin *plugin);
+ int (*next_track) (struct compress_plugin *plugin);
+ int (*ioctl) (struct compress_plugin *plugin, int cmd, ...);
+ int (*poll) (struct compress_plugin *plugin,
+ struct pollfd *fds, nfds_t nfds, int timeout);
+};
+
+struct compress_plugin {
+ unsigned int card;
+
+ struct compress_plugin_ops *ops;
+
+ void *node;
+ int mode;
+ void *priv;
+
+ unsigned int state;
+};
+
+#endif /* end of __COMPRESS_PLUGIN_H__ */