mirror of https://github.com/thesofproject/sof.git
76 lines
2.7 KiB
C
76 lines
2.7 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright(c) 2022 Google LLC.
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*
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* Author: Kehuang Li <kehuangli@google.com>
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*/
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#ifndef GOOGLE_AUDIO_POST_PROCESSING_H
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#define GOOGLE_AUDIO_POST_PROCESSING_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// This define ensure that the linked library matches the header file.
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#define GoogleAudioPostProcessingCreate GoogleAudioPostProcessingCreate_v1
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typedef struct GoogleAudioPostProcessingState GoogleAudioPostProcessingState;
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struct GoogleAudioPostProcessingBuffer {
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uint16_t sample_size; // Bytes per sample, s16=>2, s32=>4.
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uint16_t channels; // Number of interleaved channels.
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uint32_t frames; // Total available frames.
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void *base_addr; // Start address of the circular buffer.
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void *head_ptr; // Current read/write position of the circular buffer.
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void *end_addr; // End address of the circular buffer.
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};
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// Creates an instance of GoogleAudioPostProcessing with the tuning embedded in
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// the library.
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GoogleAudioPostProcessingState *GoogleAudioPostProcessingCreate(void);
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// Frees all allocated resources in `state` and deletes `state`.
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void GoogleAudioPostProcessingDelete(GoogleAudioPostProcessingState *state);
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// Setup or reconfigure the audio processing.
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// Returns 0 if success and non zero if failure.
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int GoogleAudioPostProcessingSetup(GoogleAudioPostProcessingState *const state,
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int channels, int frames, int volume,
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const uint8_t *const config,
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int config_size);
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// Pulls the current config (serialized) of the audio processing pipeline.
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// If the config size is greater than `max_config_size`, following calls with
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// `msg_index` > 0 can happen, and the implementation will maintain that internally.
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// Returns config size if success and negative if failure.
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int GoogleAudioPostProcessingGetConfig(
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GoogleAudioPostProcessingState *const state, int code, int msg_index,
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uint8_t *const config, int max_config_size);
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// Accepts and produces a frame of interleaved 32 bit integer audio. `src` and
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// `dest` may use the same memory, if desired.
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// Returns 0 if success and non zero if failure.
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int GoogleAudioPostProcessingProcess(
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GoogleAudioPostProcessingState *const state,
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const struct GoogleAudioPostProcessingBuffer *const src,
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struct GoogleAudioPostProcessingBuffer *const dest);
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// Sets system volume.
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// Returns volume if success and negative if failure.
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int GoogleAudioPostProcessingSetVol(GoogleAudioPostProcessingState *const state,
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const int *const volume, int num_channels);
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// Gets current volume.
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// Returns 0 if success and non zero if failure.
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int GoogleAudioPostProcessingGetVol(GoogleAudioPostProcessingState *const state,
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int *const volume, int num_channels);
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#ifdef __cplusplus
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}
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#endif
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#endif // GOOGLE_AUDIO_POST_PROCESSING_H
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