提交: 8707e3532d6c5250d45a362048ea641314481efe - hardware-libaudio (git)

hardware/libaudio

Commit MetaInfo

• 修订版: 8707e3532d6c5250d45a362048ea641314481efe (tree)
• 时间: 2015-07-15 20:28:20
• 作者: Chih-Wei Huang <cwhuang@linu...>
• Commiter: Chih-Wei Huang

Log Message

audio_hw: fallback to sampling rates 44100 if possible

更改概述

• modified: audio_hw.c

差异

--- a/audio_hw.c
+++ b/audio_hw.c
@@ -188,6 +188,19 @@ static int select_card(int d)
     return -1;
 }
 
+struct pcm *my_pcm_open(unsigned int card, unsigned int device, unsigned int flags, struct pcm_config *config)
+{
+    struct pcm *pcm = pcm_open(card, device, flags, config);
+    if (pcm && !pcm_is_ready(pcm)) {
+        ALOGE("my_pcm_open(%d) failed: %s", flags, pcm_get_error(pcm));
+        pcm_close(pcm);
+        ALOGI("my_pcm_open: re-try 44100 on card %d", card);
+        config->rate = 44100;
+        pcm = pcm_open(card, device, flags, config);
+    }
+    return pcm;
+}
+
 static void select_devices(struct audio_device *adev)
 {
     int headphone_on;
@@ -308,7 +321,7 @@ static int start_output_stream(struct stream_out *out)
     if (ret < 0) {
         return -ENODEV;
     }
-    out->pcm = pcm_open(ret, device, PCM_OUT | PCM_NORESTART, out->pcm_config);
+    out->pcm = my_pcm_open(ret, device, PCM_OUT | PCM_NORESTART, out->pcm_config);
 
     if (out->pcm && !pcm_is_ready(out->pcm)) {
         ALOGE("pcm_open(out) failed: %s", pcm_get_error(out->pcm));
@@ -380,7 +393,7 @@ static int start_input_stream(struct stream_in *in)
     if (ret < 0) {
         return -ENODEV;
     }
-    in->pcm = pcm_open(ret, device, PCM_IN, in->pcm_config);
+    in->pcm = my_pcm_open(ret, device, PCM_IN, in->pcm_config);
 
     if (in->pcm && !pcm_is_ready(in->pcm)) {
         ALOGE("pcm_open(in) failed: %s", pcm_get_error(in->pcm));