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android/hal-audio-aptx: Load aptX encoder library

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This patch adds loading of aptX encoder library which should be provided
by user. hal-audio-aptx will try to load 'libbt-aptx.so' so it should be
available in search patch, preferably in /system/lib.
This commit is contained in:
Andrzej Kaczmarek 2014-06-02 18:37:50 +02:00 committed by Luiz Augusto von Dentz
parent 683aa4bf36
commit 922a069bec
1 changed files with 46 additions and 3 deletions
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49
android/hal-audio-aptx.c
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@ -27,6 +27,8 @@
#include "src/shared/util.h"
#include "profiles/audio/a2dp-codecs.h"
#define APTX_SO_NAME "libbt-aptx.so"
struct aptx_data {
a2dp_aptx_t aptx;
@ -61,15 +63,56 @@ static const a2dp_aptx_t aptx_presets[] = {
},
};
static void *aptx_handle;
static int aptx_btencsize;
static int (*aptx_init)(void *, short);
static int (*aptx_encode)(void *, void *, void *, void *);
static bool aptx_load(void)
{
/* TODO: load aptX codec library */
return false;
const char * (*aptx_version)(void);
const char * (*aptx_build)(void);
int (*aptx_sizeofenc)(void);
aptx_handle = dlopen(APTX_SO_NAME, RTLD_LAZY);
if (!aptx_handle) {
error("APTX: failed to open library %s (%s)", APTX_SO_NAME,
dlerror());
return false;
}
aptx_version = dlsym(aptx_handle, "aptxbtenc_version");
aptx_build = dlsym(aptx_handle, "aptxbtenc_build");
if (aptx_version && aptx_build)
info("APTX: using library version %s build %s", aptx_version(),
aptx_build());
else
warn("APTX: cannot retrieve library version");
aptx_sizeofenc = dlsym(aptx_handle, "SizeofAptxbtenc");
aptx_init = dlsym(aptx_handle, "aptxbtenc_init");
aptx_encode = dlsym(aptx_handle, "aptxbtenc_encodestereo");
if (!aptx_sizeofenc || !aptx_init || !aptx_encode) {
error("APTX: failed initialize library");
dlclose(aptx_handle);
aptx_handle = NULL;
return false;
}
aptx_btencsize = aptx_sizeofenc();
info("APTX: codec library initialized (size=%d)", aptx_btencsize);
return true;
}
static void aptx_unload(void)
{
/* TODO: unload aptX codec library */
if (!aptx_handle)
return;
dlclose(aptx_handle);
aptx_handle = NULL;
}
static int aptx_get_presets(struct audio_preset *preset, size_t *len)