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| author | Tzung-Bi Shih <tzungbi@chromium.org> | 2019-07-02 03:05:33 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-09-19 07:59:08 +0000 |
| commit | f337d5b320867c74672f517c87543acaa447278c (patch) | |
| tree | 692d1b2d048063cced39764c4e4cbc7139ba23cb /include | |
| parent | aa17252161c5cc526555c2f82ad238361f7d22a0 (diff) | |
| download | chrome-ec-f337d5b320867c74672f517c87543acaa447278c.tar.gz | |
audio_codec: integrate speech-micro
Leverage speech-micro to detect hotword.
BRANCH=none
BUG=b:122027734, b:123268236, b:132319180
TEST=1. define CONFIG_AUDIO_CODEC in board.h
2. define CONFIG_AUDIO_CODEC_DMIC in board.h
3. define CONFIG_AUDIO_CODEC_DMIC_SOFTWARE_GAIN in board.h
4. define CONFIG_AUDIO_CODEC_DMIC_MAX_SOFTWARE_GAIN in board.h
5. define CONFIG_AUDIO_CODEC_WOV in board.h
6. make BOARD=kukui_scp -j
Change-Id: I8b238fd8bd9af8e70d5a747650eb8b7dbf4200cb
Signed-off-by: Tzung-Bi Shih <tzungbi@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1602453
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hotword_dsp_api.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/hotword_dsp_api.h b/include/hotword_dsp_api.h new file mode 100644 index 0000000000..369af00ede --- /dev/null +++ b/include/hotword_dsp_api.h @@ -0,0 +1,47 @@ +/* + * Copyright 2019 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#ifndef SPEECH_MICRO_API_HOTWORD_DSP_API_H_ +#define SPEECH_MICRO_API_HOTWORD_DSP_API_H_ + +/* + * This API creates a global singleton behind the scenes. It's the caller's + * responsibility to store the contents of the hotword_memmap model file into + * aligned memory and pass its pointer to this library. Note that no additional + * memory is allocated and hotword_memmap will contain both the model and the + * scratch buffers. + */ + +/* Specifies the required alignment for the hotword_memmap. */ +extern const int kGoogleHotwordRequiredDataAlignment; + +/* + * Called to set up the Google hotword algorithm. Returns 1 if successful, and 0 + * otherwise. + */ +int GoogleHotwordDspInit(void *hotword_memmap); + +/* + * Call with every frame of samples to process. If a hotword is detected, this + * function returns 1 otherwise 0. The required preamble length will be set to + * the number of milliseconds of buffered audio to be transferred to the AP. + */ +int GoogleHotwordDspProcess(const void *samples, int num_samples, + int *preamble_length_ms); + +/* + * If there's a break in the audio stream (e.g. when Sound Activity Detection is + * enabled), call this before any subsequent calls to GoogleHotwordDspProcess. + */ +void GoogleHotwordDspReset(void); + +/* Returns the maximum possible audio preamble length in miliseconds. */ +int GoogleHotwordDspGetMaximumAudioPreambleMs(void); + +/* Returns an internal version number that this library was built at. */ +extern int GoogleHotwordVersion(void); + +#endif /* SPEECH_MICRO_API_HOTWORD_DSP_API_H_ */ |