You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
3.0 KiB
77 lines
3.0 KiB
/*
|
|
* Copyright (C) 2014 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef COCOS_AUDIO_FORMAT_H
|
|
#define COCOS_AUDIO_FORMAT_H
|
|
|
|
#include <stdint.h>
|
|
#if CC_PLATFORM == CC_PLATFORM_ANDROID
|
|
#include <sys/cdefs.h>
|
|
#endif
|
|
|
|
#include "audio/android/audio.h"
|
|
|
|
/* Copy buffers with conversion between buffer sample formats.
|
|
*
|
|
* dst Destination buffer
|
|
* dst_format Destination buffer format
|
|
* src Source buffer
|
|
* src_format Source buffer format
|
|
* count Number of samples to copy
|
|
*
|
|
* Allowed format conversions are given by either case 1 or 2 below:
|
|
*
|
|
* 1) One of src_format or dst_format is AUDIO_FORMAT_PCM_16_BIT or
|
|
* AUDIO_FORMAT_PCM_FLOAT, and the other format type is one of:
|
|
*
|
|
* AUDIO_FORMAT_PCM_16_BIT
|
|
* AUDIO_FORMAT_PCM_FLOAT
|
|
* AUDIO_FORMAT_PCM_8_BIT
|
|
* AUDIO_FORMAT_PCM_24_BIT_PACKED
|
|
* AUDIO_FORMAT_PCM_32_BIT
|
|
* AUDIO_FORMAT_PCM_8_24_BIT
|
|
*
|
|
* 2) Both dst_format and src_format are identical and of the list given
|
|
* in (1). This is a straight copy.
|
|
*
|
|
* The destination and source buffers must be completely separate if the destination
|
|
* format size is larger than the source format size. These routines call functions
|
|
* in primitives.h, so descriptions of detailed behavior can be reviewed there.
|
|
*
|
|
* Logs a fatal error if dst or src format is not allowed by the conversion rules above.
|
|
*/
|
|
void memcpy_by_audio_format(void *dst, audio_format_t dst_format,
|
|
const void *src, audio_format_t src_format, size_t count);
|
|
|
|
/* This function creates an index array for converting audio data with different
|
|
* channel position and index masks, used by memcpy_by_index_array().
|
|
* Returns the number of array elements required.
|
|
* This may be greater than idxcount, so the return value should be checked
|
|
* if idxary size is less than 32. Returns zero if the input masks are unrecognized.
|
|
*
|
|
* Note that idxary is a caller allocated array
|
|
* of at least as many channels as present in the dst_mask.
|
|
*
|
|
* Parameters:
|
|
* idxary Updated array of indices of channels in the src frame for the dst frame
|
|
* idxcount Number of caller allocated elements in idxary
|
|
* dst_mask Bit mask corresponding to destination channels present
|
|
* src_mask Bit mask corresponding to source channels present
|
|
*/
|
|
size_t memcpy_by_index_array_initialization_from_channel_mask(int8_t *idxary, size_t arysize,
|
|
audio_channel_mask_t dst_channel_mask, audio_channel_mask_t src_channel_mask);
|
|
|
|
#endif // COCOS_AUDIO_FORMAT_H
|
|
|