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apps/common/device/usb/host/audio_demo.c

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+#include "includes.h"
+#include "asm/includes.h"
+#include "app_config.h"
+#include "system/timer.h"
+#include "device/ioctl_cmds.h"
+#include "device_drive.h"
+#if TCFG_HOST_AUDIO_ENABLE
+#include "usb/host/usb_host.h"
+#include "usb_ctrl_transfer.h"
+#include "usb_bulk_transfer.h"
+#include "audio.h"
+#include "usb_config.h"
+
+#define LOG_TAG_CONST       USB
+#define LOG_TAG             "[AUDIO]"
+#define LOG_ERROR_ENABLE
+#define LOG_DEBUG_ENABLE
+#define LOG_INFO_ENABLE
+/* #define LOG_DUMP_ENABLE */
+#define LOG_CLI_ENABLE
+#include "debug.h"
+
+
+#define TEST_FILE_ENABLE   (0)  //从sd卡读数据; 录制数据至sd卡
+#if (TEST_FILE_ENABLE)
+static FILE *play_file = NULL;
+int usb_audio_play_put_buf(void *ptr, u32 len)
+{
+    int ret = 0;
+    if (ptr == NULL && len == 0) {
+        //err
+        if (play_file) {
+            fclose(play_file);
+            play_file = NULL;
+            return 0;
+        }
+    }
+    if (!play_file) {
+        play_file = fopen("storage/sd0/C/raw.pcm", "r"); //单声道
+        /* play_file = fopen("storage/sd0/C/raw2.pcm", "r"); //双声道 */
+        if (!play_file) {
+            log_e("fopen play file faild!\n");
+            return -1;
+        }
+    }
+    //读sd卡数据到播放缓存中
+    ret = fread(play_file, ptr, len);
+    if (ret != len) {
+        log_e(" file read buf err %d\n", ret);
+        fclose(play_file);
+        play_file = NULL;
+        return -1;
+    }
+
+    return len;
+}
+static FILE *record_file = NULL;
+int usb_audio_record_get_buf(void *ptr, u32 len)
+{
+#if (TEST_FILE_ENABLE)
+    int ret = 0;
+    static u32 cnt = 0;
+    if (!record_file) {
+        record_file = fopen("storage/sd0/C/record01.pcm", "w+");
+        cnt = 0;
+        if (!record_file) {
+            log_e("fopen play file faild!\n");
+            return -1;
+        }
+    }
+    putchar('W');
+    ret = fwrite(record_file, ptr, len);
+    if (ret != len) {
+        log_e(" file write buf err %d\n", ret);
+        fclose(record_file);
+        record_file = NULL;
+        return -1;
+    }
+    //test
+    if (cnt++ >= 800) {
+        cnt = 0;
+        log_info("stop record....\n");
+        fclose(record_file);
+        record_file = NULL;
+    }
+#endif
+
+    return len;
+}
+#else
+
+//将数据传入usb
+//ptr:usb数据指针
+//len:需要传入的数据长度
+int usb_audio_play_put_buf(void *ptr, u32 len)
+{
+    return len;
+}
+
+//从usb读取数据
+//ptr:usb数据指针
+//len:读取的数据长度
+int usb_audio_record_get_buf(void *ptr, u32 len)
+{
+    return len;
+}
+
+
+#endif
+
+#endif