commit 4c63039cfa1b8b4ed56ae529574792cc629f6b22
author Naresh Tanniru <ntanniru@codeaurora.org> Mon May 12 01:05:52 2014 +0530
committer Naresh Tanniru <ntanniru@codeaurora.org> Tue May 13 00:25:49 2014 +0530
tree 726503e52ab7f4653dc2bbf1505a753c60346e06
parent e1be46f950a40e1cf8450cb57af77cfb7b4c15fc

hal: SSR support for pcm playback,pcm record usecases

- Added SSR event handling support in HAL

- Added support to drop incoming pcm data for pcm playback
  usecase during SSR

- Added support to send dummy input(mute/zero buffer) for
  record usecase during SSR

Change-Id: I158b62fa443bb523091128fe1308c9a9b1415502

hal/audio_hw.h

diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index 3115f1a..3f780d3 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -52,6 +52,8 @@
 #define MAX_SUPPORTED_CHANNEL_MASKS 2
 #define DEFAULT_HDMI_OUT_CHANNELS   2
 
+#define SND_CARD_STATE_OFFLINE 0
+#define SND_CARD_STATE_ONLINE 1
 typedef int snd_device_t;
 
 /* These are the supported use cases by the hardware.
@@ -138,6 +140,12 @@
     OFFLOAD_STATE_PAUSED,
 };
 
+enum {
+    PCM_ERROR_NONE,
+    PCM_ERROR_EIO,
+    PCM_ERROR_ENETRESET,  /* For SSR */
+};
+
 struct offload_cmd {
     struct listnode node;
     int cmd;
@@ -178,6 +186,7 @@
     void *offload_cookie;
     struct compr_gapless_mdata gapless_mdata;
     int send_new_metadata;
+    int pcm_error_type;
 
     struct audio_device *dev;
 };
@@ -196,6 +205,7 @@
     bool enable_aec;
     bool enable_ns;
     audio_format_t format;
+    int pcm_error_type;
 
     struct audio_device *dev;
 };
@@ -223,6 +233,11 @@
     union stream_ptr stream;
 };
 
+struct sound_card_status {
+    pthread_mutex_t lock;
+    int state;
+};
+
 struct audio_device {
     struct audio_hw_device device;
     pthread_mutex_t lock; /* see note below on mutex acquisition order */
@@ -251,6 +266,8 @@
     void *offload_effects_lib;
     int (*offload_effects_start_output)(audio_io_handle_t, int);
     int (*offload_effects_stop_output)(audio_io_handle_t, int);
+
+    struct sound_card_status snd_card_status;
 };
 
 int select_devices(struct audio_device *adev,