Merge pull request #2010 from jepler/audiocore

audiocore: Factor from audioio

1 files changed, 125 insertions, 0 deletions

diff --git a/shared-module/audiocore/__init__.c b/shared-module/audiocore/__init__.c
new file mode 100644
index 000000000..067cae5dd
--- /dev/null
+++ b/shared-module/audiocore/__init__.c
@@ -0,0 +1,125 @@
+/*
+ * This file is part of the MicroPython 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-module/audioio/__init__.h"
+
+#include "py/obj.h"
+#include "shared-bindings/audiocore/Mixer.h"
+#include "shared-bindings/audiocore/RawSample.h"
+#include "shared-bindings/audiocore/WaveFile.h"
+#include "shared-module/audiocore/Mixer.h"
+#include "shared-module/audiocore/RawSample.h"
+#include "shared-module/audiocore/WaveFile.h"
+
+uint32_t audiosample_sample_rate(mp_obj_t sample_obj) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        return sample->sample_rate;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        return file->sample_rate;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* mixer = MP_OBJ_TO_PTR(sample_obj);
+        return mixer->sample_rate;
+    }
+    return 16000;
+}
+
+uint8_t audiosample_bits_per_sample(mp_obj_t sample_obj) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        return sample->bits_per_sample;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        return file->bits_per_sample;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* mixer = MP_OBJ_TO_PTR(sample_obj);
+        return mixer->bits_per_sample;
+    }
+    return 8;
+}
+
+uint8_t audiosample_channel_count(mp_obj_t sample_obj) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        return sample->channel_count;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        return file->channel_count;
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* mixer = MP_OBJ_TO_PTR(sample_obj);
+        return mixer->channel_count;
+    }
+    return 1;
+}
+
+void audiosample_reset_buffer(mp_obj_t sample_obj, bool single_channel, uint8_t audio_channel) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        audioio_rawsample_reset_buffer(sample, single_channel, audio_channel);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        audioio_wavefile_reset_buffer(file, single_channel, audio_channel);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        audioio_mixer_reset_buffer(file, single_channel, audio_channel);
+    }
+}
+
+audioio_get_buffer_result_t audiosample_get_buffer(mp_obj_t sample_obj,
+                                                   bool single_channel,
+                                                   uint8_t channel,
+                                                   uint8_t** buffer, uint32_t* buffer_length) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        return audioio_rawsample_get_buffer(sample, single_channel, channel, buffer, buffer_length);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        return audioio_wavefile_get_buffer(file, single_channel, channel, buffer, buffer_length);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        return audioio_mixer_get_buffer(file, single_channel, channel, buffer, buffer_length);
+    }
+    return GET_BUFFER_DONE;
+}
+
+void audiosample_get_buffer_structure(mp_obj_t sample_obj, bool single_channel,
+                                      bool* single_buffer, bool* samples_signed,
+                                      uint32_t* max_buffer_length, uint8_t* spacing) {
+    if (MP_OBJ_IS_TYPE(sample_obj, &audioio_rawsample_type)) {
+        audioio_rawsample_obj_t* sample = MP_OBJ_TO_PTR(sample_obj);
+        audioio_rawsample_get_buffer_structure(sample, single_channel, single_buffer,
+                                               samples_signed, max_buffer_length, spacing);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_wavefile_type)) {
+        audioio_wavefile_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        audioio_wavefile_get_buffer_structure(file, single_channel, single_buffer, samples_signed,
+                                              max_buffer_length, spacing);
+    } else if (MP_OBJ_IS_TYPE(sample_obj, &audioio_mixer_type)) {
+        audioio_mixer_obj_t* file = MP_OBJ_TO_PTR(sample_obj);
+        audioio_mixer_get_buffer_structure(file, single_channel, single_buffer, samples_signed,
+                                              max_buffer_length, spacing);
+    }
+}