diff options
Diffstat (limited to 'src/class/audio/audio_device.c')
| -rw-r--r-- | src/class/audio/audio_device.c | 661 |
1 files changed, 417 insertions, 244 deletions
diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index 1a7ce7870..9ba38a20c 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -96,13 +96,6 @@ #define USE_LINEAR_BUFFER 1 #endif -// Temporarily put the check here for stm32_fsdev -#ifdef TUP_USBIP_FSDEV - #define USE_ISO_EP_ALLOCATION 1 -#else - #define USE_ISO_EP_ALLOCATION 0 -#endif - // Declaration of buffers // Check for maximum supported numbers @@ -110,24 +103,36 @@ #error Maximum number of audio functions restricted to three! #endif +// Put sw_buf in USB section only if necessary +#if USE_LINEAR_BUFFER || CFG_TUD_AUDIO_ENABLE_ENCODING +#define IN_SW_BUF_MEM_SECTION +#else +#define IN_SW_BUF_MEM_SECTION CFG_TUD_MEM_SECTION +#endif +#if USE_LINEAR_BUFFER || CFG_TUD_AUDIO_ENABLE_DECODING +#define OUT_SW_BUF_MEM_SECTION +#else +#define OUT_SW_BUF_MEM_SECTION CFG_TUD_MEM_SECTION +#endif + // EP IN software buffers and mutexes #if CFG_TUD_AUDIO_ENABLE_EP_IN && !CFG_TUD_AUDIO_ENABLE_ENCODING #if CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_1[CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ]; + IN_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_1[CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_in_ff_mutex_wr_1; // No need for read mutex as only USB driver reads from FIFO #endif #endif // CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ > 0 #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_2[CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ]; + IN_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_2[CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_in_ff_mutex_wr_2; // No need for read mutex as only USB driver reads from FIFO #endif #endif // CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_IN_SW_BUF_SZ > 0 #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_3[CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ]; + IN_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_in_sw_buf_3[CFG_TUD_AUDIO_FUNC_3_EP_IN_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_in_ff_mutex_wr_3; // No need for read mutex as only USB driver reads from FIFO #endif @@ -154,21 +159,21 @@ // EP OUT software buffers and mutexes #if CFG_TUD_AUDIO_ENABLE_EP_OUT && !CFG_TUD_AUDIO_ENABLE_DECODING #if CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_1[CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ]; + OUT_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_1[CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_out_ff_mutex_rd_1; // No need for write mutex as only USB driver writes into FIFO #endif #endif // CFG_TUD_AUDIO_FUNC_1_EP_OUT_SW_BUF_SZ > 0 #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_2[CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ]; + OUT_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_2[CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_out_ff_mutex_rd_2; // No need for write mutex as only USB driver writes into FIFO #endif #endif // CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_EP_OUT_SW_BUF_SZ > 0 #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_3[CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ]; + OUT_SW_BUF_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t audio_ep_out_sw_buf_3[CFG_TUD_AUDIO_FUNC_3_EP_OUT_SW_BUF_SZ]; #if CFG_FIFO_MUTEX osal_mutex_def_t ep_out_ff_mutex_rd_3; // No need for write mutex as only USB driver writes into FIFO #endif @@ -217,7 +222,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; // Software encoding/decoding support FIFOs #if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_ENABLE_ENCODING #if CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_1[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_1[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ]; tu_fifo_t tx_supp_ff_1[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t tx_supp_ff_mutex_wr_1[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO]; // No need for read mutex as only USB driver reads from FIFO @@ -225,7 +230,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; #endif #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_TX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_2[CFG_TUD_AUDIO_FUNC_2_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_2_TX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_2[CFG_TUD_AUDIO_FUNC_2_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_2_TX_SUPP_SW_FIFO_SZ]; tu_fifo_t tx_supp_ff_2[CFG_TUD_AUDIO_FUNC_2_N_TX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t tx_supp_ff_mutex_wr_2[CFG_TUD_AUDIO_FUNC_2_N_TX_SUPP_SW_FIFO]; // No need for read mutex as only USB driver reads from FIFO @@ -233,7 +238,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; #endif #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_TX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_3[CFG_TUD_AUDIO_FUNC_3_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_3_TX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t tx_supp_ff_buf_3[CFG_TUD_AUDIO_FUNC_3_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_3_TX_SUPP_SW_FIFO_SZ]; tu_fifo_t tx_supp_ff_3[CFG_TUD_AUDIO_FUNC_3_N_TX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t tx_supp_ff_mutex_wr_3[CFG_TUD_AUDIO_FUNC_3_N_TX_SUPP_SW_FIFO]; // No need for read mutex as only USB driver reads from FIFO @@ -243,7 +248,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; #if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING #if CFG_TUD_AUDIO_FUNC_1_RX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_1[CFG_TUD_AUDIO_FUNC_1_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_RX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_1[CFG_TUD_AUDIO_FUNC_1_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_RX_SUPP_SW_FIFO_SZ]; tu_fifo_t rx_supp_ff_1[CFG_TUD_AUDIO_FUNC_1_N_RX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t rx_supp_ff_mutex_rd_1[CFG_TUD_AUDIO_FUNC_1_N_RX_SUPP_SW_FIFO]; // No need for write mutex as only USB driver writes into FIFO @@ -251,7 +256,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; #endif #if CFG_TUD_AUDIO > 1 && CFG_TUD_AUDIO_FUNC_2_RX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_2[CFG_TUD_AUDIO_FUNC_2_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_2_RX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_2[CFG_TUD_AUDIO_FUNC_2_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_2_RX_SUPP_SW_FIFO_SZ]; tu_fifo_t rx_supp_ff_2[CFG_TUD_AUDIO_FUNC_2_N_RX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t rx_supp_ff_mutex_rd_2[CFG_TUD_AUDIO_FUNC_2_N_RX_SUPP_SW_FIFO]; // No need for write mutex as only USB driver writes into FIFO @@ -259,7 +264,7 @@ uint8_t alt_setting_3[CFG_TUD_AUDIO_FUNC_3_N_AS_INT]; #endif #if CFG_TUD_AUDIO > 2 && CFG_TUD_AUDIO_FUNC_3_RX_SUPP_SW_FIFO_SZ > 0 - CFG_TUD_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_3[CFG_TUD_AUDIO_FUNC_3_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_3_RX_SUPP_SW_FIFO_SZ]; + CFG_TUSB_MEM_ALIGN uint8_t rx_supp_ff_buf_3[CFG_TUD_AUDIO_FUNC_3_N_RX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_3_RX_SUPP_SW_FIFO_SZ]; tu_fifo_t rx_supp_ff_3[CFG_TUD_AUDIO_FUNC_3_N_RX_SUPP_SW_FIFO]; #if CFG_FIFO_MUTEX osal_mutex_def_t rx_supp_ff_mutex_rd_3[CFG_TUD_AUDIO_FUNC_3_N_RX_SUPP_SW_FIFO]; // No need for write mutex as only USB driver writes into FIFO @@ -289,10 +294,12 @@ typedef struct #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - uint8_t ep_int_ctr; // Audio control interrupt EP. +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + uint8_t ep_int; // Audio control interrupt EP. #endif + bool mounted; // Device opened + /*------------- From this point, data is not cleared by bus reset -------------*/ uint16_t desc_length; // Length of audio function descriptor @@ -346,8 +353,8 @@ typedef struct #endif // Audio control interrupt buffer - no FIFO - 6 Bytes according to UAC 2 specification (p. 74) -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - CFG_TUSB_MEM_ALIGN uint8_t ep_int_ctr_buf[CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE]; +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + CFG_TUSB_MEM_ALIGN uint8_t ep_int_buf[6]; #endif // Decoding parameters - parameters are set when alternate AS interface is set by host @@ -364,14 +371,21 @@ typedef struct #endif #endif +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + uint32_t sample_rate_tx; + uint16_t packet_sz_tx[3]; + uint8_t bclock_id_tx; + uint8_t interval_tx; +#endif + // Encoding parameters - parameters are set when alternate AS interface is set by host -#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_ENABLE_ENCODING +#if CFG_TUD_AUDIO_ENABLE_EP_IN && (CFG_TUD_AUDIO_ENABLE_ENCODING || CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL) audio_format_type_t format_type_tx; uint8_t n_channels_tx; + uint8_t n_bytes_per_sampe_tx; #if CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING audio_data_format_type_I_t format_type_I_tx; - uint8_t n_bytes_per_sampe_tx; uint8_t n_channels_per_ff_tx; uint8_t n_ff_used_tx; #endif @@ -444,7 +458,7 @@ static bool audiod_verify_itf_exists(uint8_t itf, uint8_t *func_id); static bool audiod_verify_ep_exists(uint8_t ep, uint8_t *func_id); static uint8_t audiod_get_audio_fct_idx(audiod_function_t * audio); -#if CFG_TUD_AUDIO_ENABLE_ENCODING || CFG_TUD_AUDIO_ENABLE_DECODING +#if (CFG_TUD_AUDIO_ENABLE_EP_IN && (CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL || CFG_TUD_AUDIO_ENABLE_ENCODING)) || (CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING) static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * p_desc, uint8_t const * p_desc_end, uint8_t const as_itf); static inline uint8_t tu_desc_subtype(void const* desc) @@ -453,6 +467,11 @@ static inline uint8_t tu_desc_subtype(void const* desc) } #endif +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL +static bool audiod_calc_tx_packet_sz(audiod_function_t* audio); +static uint16_t audiod_tx_packet_size(const uint16_t* norminal_size, uint16_t data_count, uint16_t fifo_depth, uint16_t max_size); +#endif + #if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP static bool set_fb_params_freq(audiod_function_t* audio, uint32_t sample_freq, uint32_t mclk_freq); #endif @@ -462,23 +481,7 @@ bool tud_audio_n_mounted(uint8_t func_id) TU_VERIFY(func_id < CFG_TUD_AUDIO); audiod_function_t* audio = &_audiod_fct[func_id]; -#if CFG_TUD_AUDIO_ENABLE_EP_OUT - if (audio->ep_out == 0) return false; -#endif - -#if CFG_TUD_AUDIO_ENABLE_EP_IN - if (audio->ep_in == 0) return false; -#endif - -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - if (audio->ep_int_ctr == 0) return false; -#endif - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - if (audio->ep_fb == 0) return false; -#endif - - return true; + return audio->mounted; } //--------------------------------------------------------------------+ @@ -631,73 +634,55 @@ static bool audiod_rx_done_cb(uint8_t rhport, audiod_function_t* audio, uint16_t // Decoding according to 2.3.1.5 Audio Streams // Helper function -static inline uint8_t * audiod_interleaved_copy_bytes_fast_decode(uint16_t const nBytesToCopy, void * dst, uint8_t * dst_end, uint8_t * src, uint8_t const n_ff_used) +static inline void * audiod_interleaved_copy_bytes_fast_decode(uint16_t const nBytesPerSample, void * dst, const void * dst_end, void * src, uint8_t const n_ff_used) { + // Due to one FIFO contains 2 channels, data always aligned to (nBytesPerSample * 2) + uint16_t * dst16 = dst; + uint16_t * src16 = src; + const uint16_t * dst_end16 = dst_end; + uint32_t * dst32 = dst; + uint32_t * src32 = src; + const uint32_t * dst_end32 = dst_end; - // This function is an optimized version of - // while((uint8_t *)dst < dst_end) - // { - // memcpy(dst, src, nBytesToCopy); - // dst = (uint8_t *)dst + nBytesToCopy; - // src += nBytesToCopy * n_ff_used; - // } - - // Optimize for fast half word copies - typedef struct{ - uint16_t val; - } __attribute((__packed__)) unaligned_uint16_t; - - // Optimize for fast word copies - typedef struct{ - uint32_t val; - } __attribute((__packed__)) unaligned_uint32_t; - - switch (nBytesToCopy) + if (nBytesPerSample == 1) { - case 1: - while((uint8_t *)dst < dst_end) - { - *(uint8_t *)dst++ = *src; - src += n_ff_used; - } - break; - - case 2: - while((uint8_t *)dst < dst_end) - { - *(unaligned_uint16_t*)dst = *(unaligned_uint16_t*)src; - dst += 2; - src += 2 * n_ff_used; - } - break; - - case 3: - while((uint8_t *)dst < dst_end) - { - // memcpy(dst, src, 3); - // dst = (uint8_t *)dst + 3; - // src += 3 * n_ff_used; - - // TODO: Is there a faster way to copy 3 bytes? - *(uint8_t *)dst++ = *src++; - *(uint8_t *)dst++ = *src++; - *(uint8_t *)dst++ = *src++; - - src += 3 * (n_ff_used - 1); - } - break; - - case 4: - while((uint8_t *)dst < dst_end) - { - *(unaligned_uint32_t*)dst = *(unaligned_uint32_t*)src; - dst += 4; - src += 4 * n_ff_used; - } - break; + while(dst16 < dst_end16) + { + *dst16++ = *src16++; + src16 += n_ff_used - 1; + } + return src16; + } + else if (nBytesPerSample == 2) + { + while(dst32 < dst_end32) + { + *dst32++ = *src32++; + src32 += n_ff_used - 1; + } + return src32; + } + else if (nBytesPerSample == 3) + { + while(dst16 < dst_end16) + { + *dst16++ = *src16++; + *dst16++ = *src16++; + *dst16++ = *src16++; + src16 += 3 * (n_ff_used - 1); + } + return src16; + } + else // nBytesPerSample == 4 + { + while(dst32 < dst_end32) + { + *dst32++ = *src32++; + *dst32++ = *src32++; + src32 += 2 * (n_ff_used - 1); + } + return src32; } - - return src; } static bool audiod_decode_type_I_pcm(uint8_t rhport, audiod_function_t* audio, uint16_t n_bytes_received) @@ -819,27 +804,32 @@ tu_fifo_t* tud_audio_n_get_tx_support_ff(uint8_t func_id, uint8_t ff_idx) #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - -// If no interrupt transmit is pending bytes get written into buffer and a transmit is scheduled - once transmit completed tud_audio_int_ctr_done_cb() is called in inform user -uint16_t tud_audio_int_ctr_n_write(uint8_t func_id, uint8_t const* buffer, uint16_t len) +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +// If no interrupt transmit is pending bytes get written into buffer and a transmit is scheduled - once transmit completed tud_audio_int_done_cb() is called in inform user +bool tud_audio_int_n_write(uint8_t func_id, const audio_interrupt_data_t * data) { TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL); - // We write directly into the EP's buffer - abort if previous transfer not complete - TU_VERIFY(!usbd_edpt_busy(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int_ctr)); + TU_VERIFY(_audiod_fct[func_id].ep_int != 0); - TU_VERIFY(tu_memcpy_s(_audiod_fct[func_id].ep_int_ctr_buf, CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE, buffer, len)==0); + // We write directly into the EP's buffer - abort if previous transfer not complete + TU_VERIFY(usbd_edpt_claim(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int)); - // Schedule transmit - TU_VERIFY(usbd_edpt_xfer(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int_ctr, _audiod_fct[func_id].ep_int_ctr_buf, len)); + // Check length + if (tu_memcpy_s(_audiod_fct[func_id].ep_int_buf, sizeof(_audiod_fct[func_id].ep_int_buf), data, sizeof(audio_interrupt_data_t)) == 0) + { + // Schedule transmit + TU_ASSERT(usbd_edpt_xfer(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int, _audiod_fct[func_id].ep_int_buf, sizeof(_audiod_fct[func_id].ep_int_buf)), 0); + } else + { + // Release endpoint since we don't make any transfer + usbd_edpt_release(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int); + } return true; } - #endif - // This function is called once a transmit of an audio packet was successfully completed. Here, we encode samples and place it in IN EP's buffer for next transmission. // If you prefer your own (more efficient) implementation suiting your purpose set CFG_TUD_AUDIO_ENABLE_ENCODING = 0 and use tud_audio_n_write. @@ -904,9 +894,12 @@ static bool audiod_tx_done_cb(uint8_t rhport, audiod_function_t * audio) #else // No support FIFOs, if no linear buffer required schedule transmit, else put data into linear buffer and schedule - +#if CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + // packet_sz_tx is based on total packet size, here we want size for each support buffer. + n_bytes_tx = audiod_tx_packet_size(audio->packet_sz_tx, tu_fifo_count(&audio->ep_in_ff), audio->ep_in_ff.depth, audio->ep_in_sz); +#else n_bytes_tx = tu_min16(tu_fifo_count(&audio->ep_in_ff), audio->ep_in_sz); // Limit up to max packet size, more can not be done for ISO - +#endif #if USE_LINEAR_BUFFER_TX tu_fifo_read_n(&audio->ep_in_ff, audio->lin_buf_in, n_bytes_tx); TU_VERIFY(usbd_edpt_xfer(rhport, audio->ep_in, audio->lin_buf_in, n_bytes_tx)); @@ -944,64 +937,55 @@ range [-1, +1) * */ // Helper function -static inline uint8_t * audiod_interleaved_copy_bytes_fast_encode(uint16_t const nBytesToCopy, uint8_t * src, uint8_t * src_end, uint8_t * dst, uint8_t const n_ff_used) +static inline void * audiod_interleaved_copy_bytes_fast_encode(uint16_t const nBytesPerSample, void * src, const void * src_end, void * dst, uint8_t const n_ff_used) { - // Optimize for fast half word copies - typedef struct{ - uint16_t val; - } __attribute((__packed__)) unaligned_uint16_t; - - // Optimize for fast word copies - typedef struct{ - uint32_t val; - } __attribute((__packed__)) unaligned_uint32_t; + // Due to one FIFO contains 2 channels, data always aligned to (nBytesPerSample * 2) + uint16_t * dst16 = dst; + uint16_t * src16 = src; + const uint16_t * src_end16 = src_end; + uint32_t * dst32 = dst; + uint32_t * src32 = src; + const uint32_t * src_end32 = src_end; - switch (nBytesToCopy) + if (nBytesPerSample == 1) { - case 1: - while(src < src_end) - { - *dst = *src++; - dst += n_ff_used; - } - break; - - case 2: - while(src < src_end) - { - *(unaligned_uint16_t*)dst = *(unaligned_uint16_t*)src; - src += 2; - dst += 2 * n_ff_used; - } - break; - - case 3: - while(src < src_end) - { - // memcpy(dst, src, 3); - // src = (uint8_t *)src + 3; - // dst += 3 * n_ff_used; - - // TODO: Is there a faster way to copy 3 bytes? - *dst++ = *src++; - *dst++ = *src++; - *dst++ = *src++; - - dst += 3 * (n_ff_used - 1); - } - break; - - case 4: - while(src < src_end) - { - *(unaligned_uint32_t*)dst = *(unaligned_uint32_t*)src; - src += 4; - dst += 4 * n_ff_used; - } - break; + while(src16 < src_end16) + { + *dst16++ = *src16++; + dst16 += n_ff_used - 1; + } + return dst16; + } + else if (nBytesPerSample == 2) + { + while(src32 < src_end32) + { + *dst32++ = *src32++; + dst32 += n_ff_used - 1; + } + return dst32; + } + else if (nBytesPerSample == 3) + { + while(src16 < src_end16) + { + *dst16++ = *src16++; + *dst16++ = *src16++; + *dst16++ = *src16++; + dst16 += 3 * (n_ff_used - 1); + } + return dst16; + } + else // nBytesPerSample == 4 + { + while(src32 < src_end32) + { + *dst32++ = *src32++; + *dst32++ = *src32++; + dst32 += 2 * (n_ff_used - 1); + } + return dst32; } - - return dst; } static uint16_t audiod_encode_type_I_pcm(uint8_t rhport, audiod_function_t* audio) @@ -1014,8 +998,6 @@ static uint16_t audiod_encode_type_I_pcm(uint8_t rhport, audiod_function_t* audi // Determine amount of samples uint8_t const n_ff_used = audio->n_ff_used_tx; - uint16_t const nBytesToCopy = audio->n_channels_per_ff_tx * audio->n_bytes_per_sampe_tx; - uint16_t const capPerFF = audio->ep_in_sz / n_ff_used; // Sample capacity per FIFO in bytes uint16_t nBytesPerFFToSend = tu_fifo_count(&audio->tx_supp_ff[0]); uint8_t cnt_ff; @@ -1028,14 +1010,23 @@ static uint16_t audiod_encode_type_I_pcm(uint8_t rhport, audiod_function_t* audi } } - // Check if there is enough +#if CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + const uint16_t norm_packet_sz_tx[3] = {audio->packet_sz_tx[0] / n_ff_used, + audio->packet_sz_tx[1] / n_ff_used, + audio->packet_sz_tx[2] / n_ff_used}; + // packet_sz_tx is based on total packet size, here we want size for each support buffer. + nBytesPerFFToSend = audiod_tx_packet_size(norm_packet_sz_tx, nBytesPerFFToSend, audio->tx_supp_ff[0].depth, audio->ep_in_sz / n_ff_used); + // Check if there is enough data + if (nBytesPerFFToSend == 0) return 0; +#else + // Check if there is enough data if (nBytesPerFFToSend == 0) return 0; - // Limit to maximum sample number - THIS IS A POSSIBLE ERROR SOURCE IF TOO MANY SAMPLE WOULD NEED TO BE SENT BUT CAN NOT! - nBytesPerFFToSend = tu_min16(nBytesPerFFToSend, capPerFF); - + nBytesPerFFToSend = tu_min16(nBytesPerFFToSend, audio->ep_in_sz / n_ff_used); // Round to full number of samples (flooring) - nBytesPerFFToSend = (nBytesPerFFToSend / nBytesToCopy) * nBytesToCopy; + uint16_t const nSlotSize = audio->n_channels_per_ff_tx * audio->n_bytes_per_sampe_tx; + nBytesPerFFToSend = (nBytesPerFFToSend / nSlotSize) * nSlotSize; +#endif // Encode uint8_t * dst; @@ -1298,7 +1289,7 @@ void audiod_init(void) #endif // CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_ENABLE_ENCODING // Set encoding parameters for Type_I formats -#if CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING switch (i) { #if CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ > 0 @@ -1398,6 +1389,10 @@ void audiod_init(void) } } +bool audiod_deinit(void) { + return false; // TODO not implemented yet +} + void audiod_reset(uint8_t rhport) { (void) rhport; @@ -1441,10 +1436,11 @@ uint16_t audiod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin // Verify version is correct - this check can be omitted TU_VERIFY(itf_desc->bInterfaceProtocol == AUDIO_INT_PROTOCOL_CODE_V2); - // Verify interrupt control EP is enabled if demanded by descriptor - this should be best some static check however - this check can be omitted - if (itf_desc->bNumEndpoints == 1) // 0 or 1 EPs are allowed + // Verify interrupt control EP is enabled if demanded by descriptor + TU_ASSERT(itf_desc->bNumEndpoints <= 1); // 0 or 1 EPs are allowed + if (itf_desc->bNumEndpoints == 1) { - TU_VERIFY(CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN > 0); + TU_ASSERT(CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP); } // Alternate setting MUST be zero - this check can be omitted @@ -1477,83 +1473,143 @@ uint16_t audiod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin #endif } -#if USE_ISO_EP_ALLOCATION +#ifdef TUP_DCD_EDPT_ISO_ALLOC + { #if CFG_TUD_AUDIO_ENABLE_EP_IN - uint8_t ep_in = 0; - uint16_t ep_in_size = 0; + uint8_t ep_in = 0; + uint16_t ep_in_size = 0; #endif #if CFG_TUD_AUDIO_ENABLE_EP_OUT - uint8_t ep_out = 0; - uint16_t ep_out_size = 0; + uint8_t ep_out = 0; + uint16_t ep_out_size = 0; #endif #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - uint8_t ep_fb = 0; + uint8_t ep_fb = 0; #endif - - uint8_t const *p_desc = _audiod_fct[i].p_desc; - uint8_t const *p_desc_end = p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; - while (p_desc < p_desc_end) - { - if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) + uint8_t const *p_desc = _audiod_fct[i].p_desc; + uint8_t const *p_desc_end = p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; + while (p_desc < p_desc_end) { - tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc; - if (desc_ep->bmAttributes.xfer == TUSB_XFER_ISOCHRONOUS) + if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) { - #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - // Explicit feedback EP - if (desc_ep->bmAttributes.usage == 1) + tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc; + if (desc_ep->bmAttributes.xfer == TUSB_XFER_ISOCHRONOUS) { - ep_fb = desc_ep->bEndpointAddress; - } + #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP + // Explicit feedback EP + if (desc_ep->bmAttributes.usage == 1) + { + ep_fb = desc_ep->bEndpointAddress; + } #endif - // Data EP - if (desc_ep->bmAttributes.usage == 0) - { - if (tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN) + // Data EP + if (desc_ep->bmAttributes.usage == 0) { + if (tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN) + { #if CFG_TUD_AUDIO_ENABLE_EP_IN - ep_in = desc_ep->bEndpointAddress; - ep_in_size = TU_MAX(tu_edpt_packet_size(desc_ep), ep_in_size); + ep_in = desc_ep->bEndpointAddress; + ep_in_size = TU_MAX(tu_edpt_packet_size(desc_ep), ep_in_size); #endif - } else - { + } else + { #if CFG_TUD_AUDIO_ENABLE_EP_OUT - ep_out = desc_ep->bEndpointAddress; - ep_out_size = TU_MAX(tu_edpt_packet_size(desc_ep), ep_out_size); + ep_out = desc_ep->bEndpointAddress; + ep_out_size = TU_MAX(tu_edpt_packet_size(desc_ep), ep_out_size); #endif + } } - } + } } + + p_desc = tu_desc_next(p_desc); } - p_desc = tu_desc_next(p_desc); - } #if CFG_TUD_AUDIO_ENABLE_EP_IN - if (ep_in) - { - usbd_edpt_iso_alloc(rhport, ep_in, ep_in_size); - } + if (ep_in) + { + usbd_edpt_iso_alloc(rhport, ep_in, ep_in_size); + } #endif #if CFG_TUD_AUDIO_ENABLE_EP_OUT - if (ep_out) - { - usbd_edpt_iso_alloc(rhport, ep_out, ep_out_size); - } + if (ep_out) + { + usbd_edpt_iso_alloc(rhport, ep_out, ep_out_size); + } #endif #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - if (ep_fb) + if (ep_fb) + { + usbd_edpt_iso_alloc(rhport, ep_fb, 4); + } + #endif + } +#endif // TUP_DCD_EDPT_ISO_ALLOC + +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL { - usbd_edpt_iso_alloc(rhport, ep_fb, 4); + uint8_t const *p_desc = _audiod_fct[i].p_desc; + uint8_t const *p_desc_end = p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; + // Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning + while (p_desc_end - p_desc > 0) + { + if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) + { + tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc; + if (desc_ep->bmAttributes.xfer == TUSB_XFER_ISOCHRONOUS) + { + if (desc_ep->bmAttributes.usage == 0) + { + if (tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN) + { + _audiod_fct[i].interval_tx = desc_ep->bInterval; + } + } + } + } else + if (tu_desc_type(p_desc) == TUSB_DESC_CS_INTERFACE && tu_desc_subtype(p_desc) == AUDIO_CS_AC_INTERFACE_OUTPUT_TERMINAL) + { + if(tu_unaligned_read16(p_desc + 4) == AUDIO_TERM_TYPE_USB_STREAMING) + { + _audiod_fct[i].bclock_id_tx = p_desc[8]; + } + } + p_desc = tu_desc_next(p_desc); + } } - #endif +#endif // CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL -#endif // USE_ISO_EP_ALLOCATION +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + { + uint8_t const *p_desc = _audiod_fct[i].p_desc; + uint8_t const *p_desc_end = p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; + // Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning + while (p_desc_end - p_desc > 0) + { + // For each endpoint + if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) + { + tusb_desc_endpoint_t const* desc_ep = (tusb_desc_endpoint_t const *) p_desc; + uint8_t const ep_addr = desc_ep->bEndpointAddress; + // If endpoint is input-direction and interrupt-type + if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN && desc_ep->bmAttributes.xfer == TUSB_XFER_INTERRUPT) + { + // Store endpoint number and open endpoint + _audiod_fct[i].ep_int = ep_addr; + TU_ASSERT(usbd_edpt_open(_audiod_fct[i].rhport, desc_ep)); + } + } + p_desc = tu_desc_next(p_desc); + } + } +#endif + _audiod_fct[i].mounted = true; break; } } @@ -1615,7 +1671,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * if (audio->ep_in_as_intf_num == itf) { audio->ep_in_as_intf_num = 0; - #if !USE_ISO_EP_ALLOCATION + #ifndef TUP_DCD_EDPT_ISO_ALLOC usbd_edpt_close(rhport, audio->ep_in); #endif @@ -1634,6 +1690,11 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * audio->ep_in = 0; // Necessary? + #if CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + audio->packet_sz_tx[0] = 0; + audio->packet_sz_tx[1] = 0; + audio->packet_sz_tx[2] = 0; + #endif } #endif // CFG_TUD_AUDIO_ENABLE_EP_IN @@ -1641,7 +1702,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * if (audio->ep_out_as_intf_num == itf) { audio->ep_out_as_intf_num = 0; - #if !USE_ISO_EP_ALLOCATION + #ifndef TUP_DCD_EDPT_ISO_ALLOC usbd_edpt_close(rhport, audio->ep_out); #endif @@ -1662,7 +1723,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * // Close corresponding feedback EP #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - #if !USE_ISO_EP_ALLOCATION + #ifndef TUP_DCD_EDPT_ISO_ALLOC usbd_edpt_close(rhport, audio->ep_fb); #endif audio->ep_fb = 0; @@ -1684,7 +1745,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * // Find correct interface if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE && ((tusb_desc_interface_t const * )p_desc)->bInterfaceNumber == itf && ((tusb_desc_interface_t const * )p_desc)->bAlternateSetting == alt) { -#if CFG_TUD_AUDIO_ENABLE_ENCODING || CFG_TUD_AUDIO_ENABLE_DECODING +#if (CFG_TUD_AUDIO_ENABLE_EP_IN && (CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL || CFG_TUD_AUDIO_ENABLE_ENCODING)) || (CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING) uint8_t const * p_desc_parse_for_params = p_desc; #endif // From this point forward follow the EP descriptors associated to the current alternate setting interface - Open EPs if necessary @@ -1694,7 +1755,7 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) { tusb_desc_endpoint_t const* desc_ep = (tusb_desc_endpoint_t const *) p_desc; -#if USE_ISO_EP_ALLOCATION +#ifdef TUP_DCD_EDPT_ISO_ALLOC TU_ASSERT(usbd_edpt_iso_activate(rhport, desc_ep)); #else TU_ASSERT(usbd_edpt_open(rhport, desc_ep)); @@ -1713,12 +1774,13 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * audio->ep_in_sz = tu_edpt_packet_size(desc_ep); // If software encoding is enabled, parse for the corresponding parameters - doing this here means only AS interfaces with EPs get scanned for parameters - #if CFG_TUD_AUDIO_ENABLE_ENCODING + #if CFG_TUD_AUDIO_ENABLE_ENCODING || CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL audiod_parse_for_AS_params(audio, p_desc_parse_for_params, p_desc_end, itf); // Reconfigure size of support FIFOs - this is necessary to avoid samples to get split in case of a wrap - #if CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING - const uint16_t active_fifo_depth = (uint16_t) ((audio->tx_supp_ff_sz_max / audio->n_bytes_per_sampe_tx) * audio->n_bytes_per_sampe_tx); + #if CFG_TUD_AUDIO_ENABLE_ENCODING && CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING + const uint16_t active_fifo_depth = (uint16_t) ((audio->tx_supp_ff_sz_max / (audio->n_channels_per_ff_tx * audio->n_bytes_per_sampe_tx)) + * (audio->n_channels_per_ff_tx * audio->n_bytes_per_sampe_tx)); for (uint8_t cnt = 0; cnt < audio->n_tx_supp_ff; cnt++) { tu_fifo_config(&audio->tx_supp_ff[cnt], audio->tx_supp_ff[cnt].buffer, active_fifo_depth, 1, true); @@ -1850,6 +1912,10 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * if (disable) usbd_sof_enable(rhport, false); #endif +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + audiod_calc_tx_packet_sz(audio); +#endif + tud_control_status(rhport, p_request); return true; @@ -1949,7 +2015,10 @@ static bool audiod_control_request(uint8_t rhport, tusb_control_request_t const case TUSB_REQ_SET_INTERFACE: return audiod_set_interface(rhport, p_request); - // Unknown/Unsupported request + case TUSB_REQ_CLEAR_FEATURE: + return true; + + // Unknown/Unsupported request default: TU_BREAKPOINT(); return false; } } @@ -2070,10 +2139,10 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 { audiod_function_t* audio = &_audiod_fct[func_id]; -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP // Data transmission of control interrupt finished - if (audio->ep_int_ctr == ep_addr) + if (audio->ep_int == ep_addr) { // According to USB2 specification, maximum payload of interrupt EP is 8 bytes on low speed, 64 bytes on full speed, and 1024 bytes on high speed (but only if an alternate interface other than 0 is used - see specification p. 49) // In case there is nothing to send we have to return a NAK - this is taken care of by PHY ??? @@ -2082,7 +2151,8 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 // I assume here, that things above are handled by PHY // All transmission is done - what remains to do is to inform job was completed - if (tud_audio_int_ctr_done_cb) TU_VERIFY(tud_audio_int_ctr_done_cb(rhport, (uint16_t) xferred_bytes)); + if (tud_audio_int_done_cb) tud_audio_int_done_cb(rhport); + return true; } #endif @@ -2292,6 +2362,19 @@ bool tud_audio_buffer_and_schedule_control_xfer(uint8_t rhport, tusb_control_req // Copy into buffer TU_VERIFY(0 == tu_memcpy_s(_audiod_fct[func_id].ctrl_buf, _audiod_fct[func_id].ctrl_buf_sz, data, (size_t)len)); +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + // Find data for sampling_frequency_control + if (p_request->bmRequestType_bit.type == TUSB_REQ_TYPE_CLASS && p_request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_INTERFACE) + { + uint8_t entityID = TU_U16_HIGH(p_request->wIndex); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + if (_audiod_fct[func_id].bclock_id_tx == entityID && ctrlSel == AUDIO_CS_CTRL_SAM_FREQ && p_request->bRequest == AUDIO_CS_REQ_CUR) + { + _audiod_fct[func_id].sample_rate_tx = tu_unaligned_read32(_audiod_fct[func_id].ctrl_buf); + } + } +#endif + // Schedule transmit return tud_control_xfer(rhport, p_request, (void*)_audiod_fct[func_id].ctrl_buf, len); } @@ -2431,7 +2514,7 @@ static bool audiod_verify_ep_exists(uint8_t ep, uint8_t *func_id) return false; } -#if CFG_TUD_AUDIO_ENABLE_ENCODING || CFG_TUD_AUDIO_ENABLE_DECODING +#if (CFG_TUD_AUDIO_ENABLE_EP_IN && (CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL || CFG_TUD_AUDIO_ENABLE_ENCODING)) || (CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING) // p_desc points to the AS interface of alternate setting zero // itf is the interface number of the corresponding interface - we check if the interface belongs to EP in or EP out to see if it is a TX or RX parameter // Currently, only AS interfaces with an EP (in or out) are supposed to be parsed for! @@ -2469,7 +2552,7 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING if (as_itf == audio->ep_out_as_intf_num) { audio->n_channels_rx = ((audio_desc_cs_as_interface_t const * )p_desc)->bNrChannels; @@ -2482,7 +2565,7 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * } // Look for a Type I Format Type Descriptor(2.3.1.6 - Audio Formats) -#if CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING || CFG_TUD_AUDIO_ENABLE_TYPE_I_DECODING +#if CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING || CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL || CFG_TUD_AUDIO_ENABLE_TYPE_I_DECODING if (tu_desc_type(p_desc) == TUSB_DESC_CS_INTERFACE && tu_desc_subtype(p_desc) == AUDIO_CS_AS_INTERFACE_FORMAT_TYPE && ((audio_desc_type_I_format_t const * )p_desc)->bFormatType == AUDIO_FORMAT_TYPE_I) { #if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_ENABLE_EP_OUT @@ -2502,7 +2585,7 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_DECODING if (as_itf == audio->ep_out_as_intf_num) { audio->n_bytes_per_sampe_rx = ((audio_desc_type_I_format_t const * )p_desc)->bSubslotSize; @@ -2518,6 +2601,96 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * } #endif +#if CFG_TUD_AUDIO_ENABLE_EP_IN && CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL + +static bool audiod_calc_tx_packet_sz(audiod_function_t* audio) +{ + TU_VERIFY(audio->format_type_tx == AUDIO_FORMAT_TYPE_I); + TU_VERIFY(audio->n_channels_tx); + TU_VERIFY(audio->n_bytes_per_sampe_tx); + TU_VERIFY(audio->interval_tx); + TU_VERIFY(audio->sample_rate_tx); + + const uint8_t interval = (tud_speed_get() == TUSB_SPEED_FULL) ? audio->interval_tx : 1 << (audio->interval_tx - 1); + + const uint16_t sample_normimal = (uint16_t)(audio->sample_rate_tx * interval / ((tud_speed_get() == TUSB_SPEED_FULL) ? 1000 : 8000)); + const uint16_t sample_reminder = (uint16_t)(audio->sample_rate_tx * interval % ((tud_speed_get() == TUSB_SPEED_FULL) ? 1000 : 8000)); + + const uint16_t packet_sz_tx_min = (uint16_t)((sample_normimal - 1) * audio->n_channels_tx * audio->n_bytes_per_sampe_tx); + const uint16_t packet_sz_tx_norm = (uint16_t)(sample_normimal * audio->n_channels_tx * audio->n_bytes_per_sampe_tx); + const uint16_t packet_sz_tx_max = (uint16_t)((sample_normimal + 1) * audio->n_channels_tx * audio->n_bytes_per_sampe_tx); + + // Endpoint size must larger than packet size + TU_ASSERT(packet_sz_tx_max <= audio->ep_in_sz); + + // Frmt20.pdf 2.3.1.1 USB Packets + if (sample_reminder) + { + // All virtual frame packets must either contain INT(nav) audio slots (small VFP) or INT(nav)+1 (large VFP) audio slots + audio->packet_sz_tx[0] = packet_sz_tx_norm; + audio->packet_sz_tx[1] = packet_sz_tx_norm; + audio->packet_sz_tx[2] = packet_sz_tx_max; + } else + { + // In the case where nav = INT(nav), ni may vary between INT(nav)-1 (small VFP), INT(nav) + // (medium VFP) and INT(nav)+1 (large VFP). + audio->packet_sz_tx[0] = packet_sz_tx_min; + audio->packet_sz_tx[1] = packet_sz_tx_norm; + audio->packet_sz_tx[2] = packet_sz_tx_max; + } + + return true; +} + +static uint16_t audiod_tx_packet_size(const uint16_t* norminal_size, uint16_t data_count, uint16_t fifo_depth, uint16_t max_depth) +{ + // Flow control need a FIFO size of at least 4*Navg + if(norminal_size[1] && norminal_size[1] <= fifo_depth * 4) + { + // Use blackout to prioritize normal size packet + static int ctrl_blackout = 0; + uint16_t packet_size; + uint16_t slot_size = norminal_size[2] - norminal_size[1]; + if (data_count < norminal_size[0]) + { + // If you get here frequently, then your I2S clock deviation is too big ! + packet_size = 0; + } else + if (data_count < fifo_depth / 2 - slot_size && !ctrl_blackout) + { + packet_size = norminal_size[0]; + ctrl_blackout = 10; + } else + if (data_count > fifo_depth / 2 + slot_size && !ctrl_blackout) + { + packet_size = norminal_size[2]; + if(norminal_size[0] == norminal_size[1]) + { + // nav > INT(nav), eg. 44.1k, 88.2k + ctrl_blackout = 0; + } else + { + // nav = INT(nav), eg. 48k, 96k + ctrl_blackout = 10; + } + } else + { + packet_size = norminal_size[1]; + if (ctrl_blackout) + { + ctrl_blackout--; + } + } + // Normally this cap is not necessary + return tu_min16(packet_size, max_depth); + } else + { + return tu_min16(data_count, max_depth); + } +} + +#endif + #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback) |