/usr/include/x86_64-linux-gnu/freerdp/codec/dsp.h is in libfreerdp-dev 1.1.0~git20140921.1.440916e+dfsg1-15ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | /**
* FreeRDP: A Remote Desktop Protocol Implementation
* Digital Sound Processing
*
* Copyright 2010-2011 Vic Lee
*
* 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 FREERDP_CODEC_DSP_H
#define FREERDP_CODEC_DSP_H
#include <freerdp/api.h>
union _ADPCM
{
struct
{
INT16 last_sample[2];
INT16 last_step[2];
} ima;
struct
{
BYTE predictor[2];
INT32 delta[2];
INT32 sample1[2];
INT32 sample2[2];
} ms;
};
typedef union _ADPCM ADPCM;
typedef struct _FREERDP_DSP_CONTEXT FREERDP_DSP_CONTEXT;
struct _FREERDP_DSP_CONTEXT
{
BYTE* resampled_buffer;
UINT32 resampled_size;
UINT32 resampled_frames;
UINT32 resampled_maxlength;
BYTE* adpcm_buffer;
UINT32 adpcm_size;
UINT32 adpcm_maxlength;
ADPCM adpcm;
void (*resample)(FREERDP_DSP_CONTEXT* context,
const BYTE* src, int bytes_per_sample,
UINT32 schan, UINT32 srate, int sframes,
UINT32 rchan, UINT32 rrate);
void (*decode_ima_adpcm)(FREERDP_DSP_CONTEXT* context,
const BYTE* src, int size, int channels, int block_size);
void (*encode_ima_adpcm)(FREERDP_DSP_CONTEXT* context,
const BYTE* src, int size, int channels, int block_size);
void (*decode_ms_adpcm)(FREERDP_DSP_CONTEXT* context,
const BYTE* src, int size, int channels, int block_size);
void (*encode_ms_adpcm)(FREERDP_DSP_CONTEXT* context,
const BYTE* src, int size, int channels, int block_size);
};
#ifdef __cplusplus
extern "C" {
#endif
FREERDP_API FREERDP_DSP_CONTEXT* freerdp_dsp_context_new(void);
FREERDP_API void freerdp_dsp_context_free(FREERDP_DSP_CONTEXT* context);
#define freerdp_dsp_context_reset_adpcm(_c) memset(&_c->adpcm, 0, sizeof(ADPCM))
#ifdef __cplusplus
}
#endif
#endif /* FREERDP_CODEC_DSP_H */
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