This patch adds optional load/unload methods for codec which can be
used to initialize some static data for codec, e.g. load shared library
which provides encoder. Unlike init/cleanup which are called on stream
open/close these methods are called when audio device is opened/closed
thus most likely only once.
---
android/hal-audio.c | 16 ++++++++++++++++
android/hal-audio.h | 3 +++
2 files changed, 19 insertions(+)
diff --git a/android/hal-audio.c b/android/hal-audio.c
index e6015f2..416a3ad 100644
--- a/android/hal-audio.c
+++ b/android/hal-audio.c
@@ -1334,11 +1334,19 @@ static int audio_dump(const audio_hw_device_t *device, int fd)
static int audio_close(hw_device_t *device)
{
struct a2dp_audio_dev *a2dp_dev = (struct a2dp_audio_dev *)device;
+ size_t i;
DBG("");
unregister_endpoints();
+ for (i = 0; i < NUM_CODECS; i++) {
+ const struct audio_codec *codec = audio_codecs[i].get();
+
+ if (codec->unload)
+ codec->unload();
+ }
+
shutdown(listen_sk, SHUT_RDWR);
shutdown(audio_sk, SHUT_RDWR);
@@ -1478,6 +1486,7 @@ static int audio_open(const hw_module_t *module, const char *name,
hw_device_t **device)
{
struct a2dp_audio_dev *a2dp_dev;
+ size_t i;
int err;
DBG("");
@@ -1516,6 +1525,13 @@ static int audio_open(const hw_module_t *module, const char *name,
a2dp_dev->dev.close_input_stream = audio_close_input_stream;
a2dp_dev->dev.dump = audio_dump;
+ for (i = 0; i < NUM_CODECS; i++) {
+ const struct audio_codec *codec = audio_codecs[i].get();
+
+ if (codec->load)
+ codec->load();
+ }
+
/*
* Note that &a2dp_dev->dev.common is the same pointer as a2dp_dev.
* This results from the structure of following structs:a2dp_audio_dev,
diff --git a/android/hal-audio.h b/android/hal-audio.h
index be71473..decbdd8 100644
--- a/android/hal-audio.h
+++ b/android/hal-audio.h
@@ -75,6 +75,9 @@ struct audio_codec {
uint8_t type;
bool use_rtp;
+ bool (*load) (void);
+ void (*unload) (void);
+
int (*get_presets) (struct audio_preset *preset, size_t *len);
bool (*init) (struct audio_preset *preset, uint16_t mtu,
--
1.9.3
--
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