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-rw-r--r--shared-module/audioio/WaveFile.c268
1 files changed, 0 insertions, 268 deletions
diff --git a/shared-module/audioio/WaveFile.c b/shared-module/audioio/WaveFile.c
deleted file mode 100644
index d5dd9419c..000000000
--- a/shared-module/audioio/WaveFile.c
+++ /dev/null
@@ -1,268 +0,0 @@
-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "shared-bindings/audioio/WaveFile.h"
-
-#include <stdint.h>
-#include <string.h>
-
-#include "py/mperrno.h"
-#include "py/runtime.h"
-
-#include "shared-module/audioio/WaveFile.h"
-#include "supervisor/shared/translate.h"
-
-struct wave_format_chunk {
- uint16_t audio_format;
- uint16_t num_channels;
- uint32_t sample_rate;
- uint32_t byte_rate;
- uint16_t block_align;
- uint16_t bits_per_sample;
- uint16_t extra_params; // Assumed to be zero below.
-};
-
-void common_hal_audioio_wavefile_construct(audioio_wavefile_obj_t* self,
- pyb_file_obj_t* file) {
- // Load the wave
- self->file = file;
- uint8_t chunk_header[16];
- f_rewind(&self->file->fp);
- UINT bytes_read;
- if (f_read(&self->file->fp, chunk_header, 16, &bytes_read) != FR_OK) {
- mp_raise_OSError(MP_EIO);
- }
- if (bytes_read != 16 ||
- memcmp(chunk_header, "RIFF", 4) != 0 ||
- memcmp(chunk_header + 8, "WAVEfmt ", 8) != 0) {
- mp_raise_ValueError(translate("Invalid wave file"));
- }
- uint32_t format_size;
- if (f_read(&self->file->fp, &format_size, 4, &bytes_read) != FR_OK) {
- mp_raise_OSError(MP_EIO);
- }
- if (bytes_read != 4 ||
- format_size > sizeof(struct wave_format_chunk)) {
- mp_raise_ValueError(translate("Invalid format chunk size"));
- }
- struct wave_format_chunk format;
- if (f_read(&self->file->fp, &format, format_size, &bytes_read) != FR_OK) {
- mp_raise_OSError(MP_EIO);
- }
- if (bytes_read != format_size) {
- }
-
- if (format.audio_format != 1 ||
- format.num_channels > 2 ||
- format.bits_per_sample > 16 ||
- (format_size == 18 &&
- format.extra_params != 0)) {
- mp_raise_ValueError(translate("Unsupported format"));
- }
- // Get the sample_rate
- self->sample_rate = format.sample_rate;
- self->len = 256;
- self->channel_count = format.num_channels;
- self->bits_per_sample = format.bits_per_sample;
-
- // TODO(tannewt): Skip any extra chunks that occur before the data section.
-
- uint8_t data_tag[4];
- if (f_read(&self->file->fp, &data_tag, 4, &bytes_read) != FR_OK) {
- mp_raise_OSError(MP_EIO);
- }
- if (bytes_read != 4 ||
- memcmp((uint8_t *) data_tag, "data", 4) != 0) {
- mp_raise_ValueError(translate("Data chunk must follow fmt chunk"));
- }
-
- uint32_t data_length;
- if (f_read(&self->file->fp, &data_length, 4, &bytes_read) != FR_OK) {
- mp_raise_OSError(MP_EIO);
- }
- if (bytes_read != 4) {
- mp_raise_ValueError(translate("Invalid file"));
- }
- self->file_length = data_length;
- self->data_start = self->file->fp.fptr;
-
- // Try to allocate two buffers, one will be loaded from file and the other
- // DMAed to DAC.
- self->buffer = m_malloc(self->len, false);
- if (self->buffer == NULL) {
- common_hal_audioio_wavefile_deinit(self);
- mp_raise_msg(&mp_type_MemoryError, translate("Couldn't allocate first buffer"));
- }
-
- self->second_buffer = m_malloc(self->len, false);
- if (self->second_buffer == NULL) {
- common_hal_audioio_wavefile_deinit(self);
- mp_raise_msg(&mp_type_MemoryError, translate("Couldn't allocate second buffer"));
- }
-}
-
-void common_hal_audioio_wavefile_deinit(audioio_wavefile_obj_t* self) {
- self->buffer = NULL;
-}
-
-bool common_hal_audioio_wavefile_deinited(audioio_wavefile_obj_t* self) {
- return self->buffer == NULL;
-}
-
-uint32_t common_hal_audioio_wavefile_get_sample_rate(audioio_wavefile_obj_t* self) {
- return self->sample_rate;
-}
-
-void common_hal_audioio_wavefile_set_sample_rate(audioio_wavefile_obj_t* self,
- uint32_t sample_rate) {
- self->sample_rate = sample_rate;
-}
-
-uint8_t common_hal_audioio_wavefile_get_bits_per_sample(audioio_wavefile_obj_t* self) {
- return self->bits_per_sample;
-}
-
-uint8_t common_hal_audioio_wavefile_get_channel_count(audioio_wavefile_obj_t* self) {
- return self->channel_count;
-}
-
-bool audioio_wavefile_samples_signed(audioio_wavefile_obj_t* self) {
- return self->bits_per_sample > 8;
-}
-
-uint32_t audioio_wavefile_max_buffer_length(audioio_wavefile_obj_t* self) {
- return 512;
-}
-
-void audioio_wavefile_reset_buffer(audioio_wavefile_obj_t* self,
- bool single_channel,
- uint8_t channel) {
- if (single_channel && channel == 1) {
- return;
- }
- // We don't reset the buffer index in case we're looping and we have an odd number of buffer
- // loads
- self->bytes_remaining = self->file_length;
- f_lseek(&self->file->fp, self->data_start);
- self->read_count = 0;
- self->left_read_count = 0;
- self->right_read_count = 0;
-}
-
-audioio_get_buffer_result_t audioio_wavefile_get_buffer(audioio_wavefile_obj_t* self,
- bool single_channel,
- uint8_t channel,
- uint8_t** buffer,
- uint32_t* buffer_length) {
- if (!single_channel) {
- channel = 0;
- }
-
- uint32_t channel_read_count = self->left_read_count;
- if (channel == 1) {
- channel_read_count = self->right_read_count;
- }
-
- bool need_more_data = self->read_count == channel_read_count;
-
- if (self->bytes_remaining == 0 && need_more_data) {
- *buffer = NULL;
- *buffer_length = 0;
- return GET_BUFFER_DONE;
- }
-
- if (need_more_data) {
- uint16_t num_bytes_to_load = self->len;
- if (num_bytes_to_load > self->bytes_remaining) {
- num_bytes_to_load = self->bytes_remaining;
- }
- UINT length_read;
- if (self->buffer_index % 2 == 1) {
- *buffer = self->second_buffer;
- } else {
- *buffer = self->buffer;
- }
- if (f_read(&self->file->fp, *buffer, num_bytes_to_load, &length_read) != FR_OK) {
- return GET_BUFFER_ERROR;
- }
- self->bytes_remaining -= length_read;
- // Pad the last buffer to word align it.
- if (self->bytes_remaining == 0 && length_read % sizeof(uint32_t) != 0) {
- uint32_t pad = length_read % sizeof(uint32_t);
- length_read += pad;
- if (self->bits_per_sample == 8) {
- for (uint32_t i = 0; i < pad; i++) {
- ((uint8_t*) (*buffer))[length_read / sizeof(uint8_t) - i - 1] = 0x80;
- }
- } else if (self->bits_per_sample == 16) {
- // We know the buffer is aligned because we allocated it onto the heap ourselves.
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Wcast-align"
- ((int16_t*) (*buffer))[length_read / sizeof(int16_t) - 1] = 0;
- #pragma GCC diagnostic pop
- }
- }
- *buffer_length = length_read;
- if (self->buffer_index % 2 == 1) {
- self->second_buffer_length = length_read;
- } else {
- self->buffer_length = length_read;
- }
- self->buffer_index += 1;
- self->read_count += 1;
- }
-
- uint32_t buffers_back = self->read_count - 1 - channel_read_count;
- if ((self->buffer_index - buffers_back) % 2 == 0) {
- *buffer = self->second_buffer;
- *buffer_length = self->second_buffer_length;
- } else {
- *buffer = self->buffer;
- *buffer_length = self->buffer_length;
- }
-
- if (channel == 0) {
- self->left_read_count += 1;
- } else if (channel == 1) {
- self->right_read_count += 1;
- *buffer = *buffer + self->bits_per_sample / 8;
- }
-
- return self->bytes_remaining == 0 ? GET_BUFFER_DONE : GET_BUFFER_MORE_DATA;
-}
-
-void audioio_wavefile_get_buffer_structure(audioio_wavefile_obj_t* self, bool single_channel,
- bool* single_buffer, bool* samples_signed,
- uint32_t* max_buffer_length, uint8_t* spacing) {
- *single_buffer = false;
- *samples_signed = self->bits_per_sample > 8;
- *max_buffer_length = 512;
- if (single_channel) {
- *spacing = self->channel_count;
- } else {
- *spacing = 1;
- }
-}
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