/usr/include/hdcd/hdcd_detect.h is in libhdcd-dev 1.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2016, Burt P.,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of its contributors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _HDCD_DETECT_H_
#define _HDCD_DETECT_H_
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
HDCD_NONE = 0, /**< HDCD packets do not (yet) appear */
HDCD_NO_EFFECT = 1, /**< HDCD packets appear, but all control codes are NOP */
HDCD_EFFECTUAL = 2, /**< HDCD packets appear, and change the output in some way */
} hdcd_dv;
typedef enum {
HDCD_PE_NEVER = 0, /**< All valid packets have PE set to off */
HDCD_PE_INTERMITTENT = 1, /**< Some valid packets have PE set to on */
HDCD_PE_PERMANENT = 2, /**< All valid packets have PE set to on */
} hdcd_pe;
typedef enum {
HDCD_PVER_NONE = 0, /**< No packets discovered */
HDCD_PVER_A = 1, /**< Packets of type A (8-bit control) discovered */
HDCD_PVER_B = 2, /**< Packets of type B (8-bit control, 8-bit XOR) discovered */
HDCD_PVER_MIX = 3, /**< Packets of type A and B discovered, most likely an error? */
} hdcd_pf;
/** get a string describing the detection status */
const char* hdcd_str_detect(hdcd_dv v);
/** get a string describing the PE status */
const char* hdcd_str_pe(hdcd_pe v);
/** get a string describing the packet format found */
const char* hdcd_str_pformat(hdcd_pf v);
#ifdef __cplusplus
}
#endif
#endif
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