Generalize audio driver for 3 audio functions plus a lot more.

- Audio format and parameters are parsed from descriptors thus user no
longer needs to give them explicitely

- Tested for 4 channel software type I PCM encoding with 16 bit with 1
channel per FIFO and 2 channels per FIFO (this is I2S specific)

1 files changed, 17 insertions, 5 deletions

diff --git a/examples/device/audio_test/src/tusb_config.h b/examples/device/audio_test/src/tusb_config.h
index 557a8b15e..d3b617319 100644
--- a/examples/device/audio_test/src/tusb_config.h
+++ b/examples/device/audio_test/src/tusb_config.h
@@ -91,6 +91,21 @@ extern "C" {
 // AUDIO CLASS DRIVER CONFIGURATION
 //--------------------------------------------------------------------
 
+// Have a look into audio_device.h for all configurations
+
+#define CFG_TUD_AUDIO_FUNC_1_DESC_LEN                                 TUD_AUDIO_MIC_ONE_CH_DESC_LEN
+#define CFG_TUD_AUDIO_FUNC_1_N_AS_INT                                 1                                       // Number of Standard AS Interface Descriptors (4.9.1) defined per audio function - this is required to be able to remember the current alternate settings of these interfaces - We restrict us here to have a constant number for all audio functions (which means this has to be the maximum number of AS interfaces an audio function has and a second audio function with less AS interfaces just wastes a few bytes)
+#define CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ                              64                                      // Size of control request buffer
+
+#define CFG_TUD_AUDIO_ENABLE_EP_IN                                    1
+#define CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX                    2                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below
+#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX                            1                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below - be aware: for different number of channels you need another descriptor!
+#define CFG_TUD_AUDIO_EP_SZ_IN                                        48 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX      // 48 Samples (48 kHz) x 2 Bytes/Sample x 1 Channel
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX                             CFG_TUD_AUDIO_EP_SZ_IN
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_EP_SZ_IN + 1
+
+
+
 // Audio format type
 #define CFG_TUD_AUDIO_FORMAT_TYPE_TX 				AUDIO_FORMAT_TYPE_I
 
@@ -100,14 +115,11 @@ extern "C" {
 #define CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX			2
 
 // EP and buffer size - for isochronous EP´s, the buffer and EP size are equal (different sizes would not make sense)
+#define CFG_TUD_AUDIO_ENABLE_EP_IN                                    1
 #define CFG_TUD_AUDIO_EPSIZE_IN                                       48 * CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_N_CHANNELS_TX                              // ceil(f_s/1000) * CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_N_CHANNELS_TX
-#define CFG_TUD_AUDIO_EP_IN_SW_BUFFER_SIZE 			CFG_TUD_AUDIO_EPSIZE_IN + CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_N_CHANNELS_TX 	// Just for safety one sample more space
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_EPSIZE_IN + CFG_TUD_AUDIO_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_N_CHANNELS_TX         // Just for safety one sample more space
 
-// Number of Standard AS Interface Descriptors (4.9.1) defined per audio function - this is required to be able to remember the current alternate settings of these interfaces - We restrict us here to have a constant number for all audio functions (which means this has to be the maximum number of AS interfaces an audio function has and a second audio function with less AS interfaces just wastes a few bytes)
-#define CFG_TUD_AUDIO_N_AS_INT 			          1
 
-// Size of control request buffer
-#define CFG_TUD_AUDIO_CTRL_BUF_SIZE 				64
 
 #ifdef __cplusplus
 }