diff options
Diffstat (limited to 'sys/arm/broadcom/bcm2835/vc_vchi_audioserv_defs.h')
| -rw-r--r-- | sys/arm/broadcom/bcm2835/vc_vchi_audioserv_defs.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sys/arm/broadcom/bcm2835/vc_vchi_audioserv_defs.h b/sys/arm/broadcom/bcm2835/vc_vchi_audioserv_defs.h new file mode 100644 index 0000000..143c543 --- /dev/null +++ b/sys/arm/broadcom/bcm2835/vc_vchi_audioserv_defs.h @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2012, Broadcom Europe Ltd + * 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. Neither the name of the copyright holder nor the + * names of its contributors may 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 HOLDER 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. + * + * $FreeBSD$ + */ + +#ifndef _VC_AUDIO_DEFS_H_ +#define _VC_AUDIO_DEFS_H_ + +#define VC_AUDIOSERV_MIN_VER 1 +#define VC_AUDIOSERV_VER 2 + +/* FourCC code used for VCHI connection */ +#define VC_AUDIO_SERVER_NAME MAKE_FOURCC("AUDS") + +/* Maximum message length */ +#define VC_AUDIO_MAX_MSG_LEN (sizeof( VC_AUDIO_MSG_T )) + +/* + * List of screens that are currently supported + * All message types supported for HOST->VC direction + */ +typedef enum +{ + VC_AUDIO_MSG_TYPE_RESULT, /* Generic result */ + VC_AUDIO_MSG_TYPE_COMPLETE, /* playback of samples complete */ + VC_AUDIO_MSG_TYPE_CONFIG, /* Configure */ + VC_AUDIO_MSG_TYPE_CONTROL, /* control */ + VC_AUDIO_MSG_TYPE_OPEN, /* open */ + VC_AUDIO_MSG_TYPE_CLOSE, /* close/shutdown */ + VC_AUDIO_MSG_TYPE_START, /* start output (i.e. resume) */ + VC_AUDIO_MSG_TYPE_STOP, /* stop output (i.e. pause) */ + VC_AUDIO_MSG_TYPE_WRITE, /* write samples */ + VC_AUDIO_MSG_TYPE_MAX + +} VC_AUDIO_MSG_TYPE; + +static const char *vc_audio_msg_type_names[] = { + "VC_AUDIO_MSG_TYPE_RESULT", + "VC_AUDIO_MSG_TYPE_COMPLETE", + "VC_AUDIO_MSG_TYPE_CONFIG", + "VC_AUDIO_MSG_TYPE_CONTROL", + "VC_AUDIO_MSG_TYPE_OPEN", + "VC_AUDIO_MSG_TYPE_CLOSE", + "VC_AUDIO_MSG_TYPE_START", + "VC_AUDIO_MSG_TYPE_STOP", + "VC_AUDIO_MSG_TYPE_WRITE", + "VC_AUDIO_MSG_TYPE_MAX" +}; + +/* configure the audio */ +typedef struct +{ + uint32_t channels; + uint32_t samplerate; + uint32_t bps; + +} VC_AUDIO_CONFIG_T; + +typedef struct +{ + uint32_t volume; + uint32_t dest; + +} VC_AUDIO_CONTROL_T; + +typedef struct +{ + uint32_t dummy; + +} VC_AUDIO_OPEN_T; + +typedef struct +{ + uint32_t dummy; + +} VC_AUDIO_CLOSE_T; + +typedef struct +{ + uint32_t dummy; + +} VC_AUDIO_START_T; + +typedef struct +{ + uint32_t draining; + +} VC_AUDIO_STOP_T; + +typedef struct +{ + uint32_t count; /* in bytes */ + void *callback; + void *cookie; + uint16_t silence; + uint16_t max_packet; +} VC_AUDIO_WRITE_T; + +/* Generic result for a request (VC->HOST) */ +typedef struct +{ + int32_t success; /* Success value */ + +} VC_AUDIO_RESULT_T; + +/* Generic result for a request (VC->HOST) */ +typedef struct +{ + int32_t count; /* Success value */ + void *callback; + void *cookie; +} VC_AUDIO_COMPLETE_T; + +/* Message header for all messages in HOST->VC direction */ +typedef struct +{ + int32_t type; /* Message type (VC_AUDIO_MSG_TYPE) */ + union + { + VC_AUDIO_CONFIG_T config; + VC_AUDIO_CONTROL_T control; + VC_AUDIO_OPEN_T open; + VC_AUDIO_CLOSE_T close; + VC_AUDIO_START_T start; + VC_AUDIO_STOP_T stop; + VC_AUDIO_WRITE_T write; + VC_AUDIO_RESULT_T result; + VC_AUDIO_COMPLETE_T complete; + } u; +} VC_AUDIO_MSG_T; + +#endif /* _VC_AUDIO_DEFS_H_ */ |
