| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Eric Anholt | 879 | 96.70% | 1 | 7.69% |
| Keerthi Reddy | 12 | 1.32% | 2 | 15.38% |
| Michael Zoran | 11 | 1.21% | 6 | 46.15% |
| Derek Robson | 4 | 0.44% | 1 | 7.69% |
| Greg Kroah-Hartman | 2 | 0.22% | 2 | 15.38% |
| Colin Ian King | 1 | 0.11% | 1 | 7.69% |
| Total | 909 | 13 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * Broadcom BM2835 V4L2 driver * * Copyright © 2013 Raspberry Pi (Trading) Ltd. * * Authors: Vincent Sanders <vincent.sanders@collabora.co.uk> * Dave Stevenson <dsteve@broadcom.com> * Simon Mellor <simellor@broadcom.com> * Luke Diamand <luked@broadcom.com> */ /* all the data structures which serialise the MMAL protocol. note * these are directly mapped onto the recived message data. * * BEWARE: They seem to *assume* pointers are u32 and that there is no * structure padding! * * NOTE: this implementation uses kernel types to ensure sizes. Rather * than assigning values to enums to force their size the * implementation uses fixed size types and not the enums (though the * comments have the actual enum type */ #define VC_MMAL_VER 15 #define VC_MMAL_MIN_VER 10 #define VC_MMAL_SERVER_NAME MAKE_FOURCC("mmal") /* max total message size is 512 bytes */ #define MMAL_MSG_MAX_SIZE 512 /* with six 32bit header elements max payload is therefore 488 bytes */ #define MMAL_MSG_MAX_PAYLOAD 488 #include "mmal-msg-common.h" #include "mmal-msg-format.h" #include "mmal-msg-port.h" enum mmal_msg_type { MMAL_MSG_TYPE_QUIT = 1, MMAL_MSG_TYPE_SERVICE_CLOSED, MMAL_MSG_TYPE_GET_VERSION, MMAL_MSG_TYPE_COMPONENT_CREATE, MMAL_MSG_TYPE_COMPONENT_DESTROY, /* 5 */ MMAL_MSG_TYPE_COMPONENT_ENABLE, MMAL_MSG_TYPE_COMPONENT_DISABLE, MMAL_MSG_TYPE_PORT_INFO_GET, MMAL_MSG_TYPE_PORT_INFO_SET, MMAL_MSG_TYPE_PORT_ACTION, /* 10 */ MMAL_MSG_TYPE_BUFFER_FROM_HOST, MMAL_MSG_TYPE_BUFFER_TO_HOST, MMAL_MSG_TYPE_GET_STATS, MMAL_MSG_TYPE_PORT_PARAMETER_SET, MMAL_MSG_TYPE_PORT_PARAMETER_GET, /* 15 */ MMAL_MSG_TYPE_EVENT_TO_HOST, MMAL_MSG_TYPE_GET_CORE_STATS_FOR_PORT, MMAL_MSG_TYPE_OPAQUE_ALLOCATOR, MMAL_MSG_TYPE_CONSUME_MEM, MMAL_MSG_TYPE_LMK, /* 20 */ MMAL_MSG_TYPE_OPAQUE_ALLOCATOR_DESC, MMAL_MSG_TYPE_DRM_GET_LHS32, MMAL_MSG_TYPE_DRM_GET_TIME, MMAL_MSG_TYPE_BUFFER_FROM_HOST_ZEROLEN, MMAL_MSG_TYPE_PORT_FLUSH, /* 25 */ MMAL_MSG_TYPE_HOST_LOG, MMAL_MSG_TYPE_MSG_LAST }; /* port action request messages differ depending on the action type */ enum mmal_msg_port_action_type { MMAL_MSG_PORT_ACTION_TYPE_UNKNOWN = 0, /* Unknown action */ MMAL_MSG_PORT_ACTION_TYPE_ENABLE, /* Enable a port */ MMAL_MSG_PORT_ACTION_TYPE_DISABLE, /* Disable a port */ MMAL_MSG_PORT_ACTION_TYPE_FLUSH, /* Flush a port */ MMAL_MSG_PORT_ACTION_TYPE_CONNECT, /* Connect ports */ MMAL_MSG_PORT_ACTION_TYPE_DISCONNECT, /* Disconnect ports */ MMAL_MSG_PORT_ACTION_TYPE_SET_REQUIREMENTS, /* Set buffer requirements*/ }; struct mmal_msg_header { u32 magic; u32 type; /** enum mmal_msg_type */ /* Opaque handle to the control service */ u32 control_service; u32 context; /** a u32 per message context */ u32 status; /** The status of the vchiq operation */ u32 padding; }; /* Send from VC to host to report version */ struct mmal_msg_version { u32 flags; u32 major; u32 minor; u32 minimum; }; /* request to VC to create component */ struct mmal_msg_component_create { u32 client_component; /* component context */ char name[128]; u32 pid; /* For debug */ }; /* reply from VC to component creation request */ struct mmal_msg_component_create_reply { u32 status; /* enum mmal_msg_status - how does this differ to * the one in the header? */ u32 component_handle; /* VideoCore handle for component */ u32 input_num; /* Number of input ports */ u32 output_num; /* Number of output ports */ u32 clock_num; /* Number of clock ports */ }; /* request to VC to destroy a component */ struct mmal_msg_component_destroy { u32 component_handle; }; struct mmal_msg_component_destroy_reply { u32 status; /** The component destruction status */ }; /* request and reply to VC to enable a component */ struct mmal_msg_component_enable { u32 component_handle; }; struct mmal_msg_component_enable_reply { u32 status; /** The component enable status */ }; /* request and reply to VC to disable a component */ struct mmal_msg_component_disable { u32 component_handle; }; struct mmal_msg_component_disable_reply { u32 status; /** The component disable status */ }; /* request to VC to get port information */ struct mmal_msg_port_info_get { u32 component_handle; /* component handle port is associated with */ u32 port_type; /* enum mmal_msg_port_type */ u32 index; /* port index to query */ }; /* reply from VC to get port info request */ struct mmal_msg_port_info_get_reply { u32 status; /** enum mmal_msg_status */ u32 component_handle; /* component handle port is associated with */ u32 port_type; /* enum mmal_msg_port_type */ u32 port_index; /* port indexed in query */ s32 found; /* unused */ u32 port_handle; /**< Handle to use for this port */ struct mmal_port port; struct mmal_es_format format; /* elementary stream format */ union mmal_es_specific_format es; /* es type specific data */ u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; /* es extra data */ }; /* request to VC to set port information */ struct mmal_msg_port_info_set { u32 component_handle; u32 port_type; /* enum mmal_msg_port_type */ u32 port_index; /* port indexed in query */ struct mmal_port port; struct mmal_es_format format; union mmal_es_specific_format es; u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; }; /* reply from VC to port info set request */ struct mmal_msg_port_info_set_reply { u32 status; u32 component_handle; /* component handle port is associated with */ u32 port_type; /* enum mmal_msg_port_type */ u32 index; /* port indexed in query */ s32 found; /* unused */ u32 port_handle; /**< Handle to use for this port */ struct mmal_port port; struct mmal_es_format format; union mmal_es_specific_format es; u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE]; }; /* port action requests that take a mmal_port as a parameter */ struct mmal_msg_port_action_port { u32 component_handle; u32 port_handle; u32 action; /* enum mmal_msg_port_action_type */ struct mmal_port port; }; /* port action requests that take handles as a parameter */ struct mmal_msg_port_action_handle { u32 component_handle; u32 port_handle; u32 action; /* enum mmal_msg_port_action_type */ u32 connect_component_handle; u32 connect_port_handle; }; struct mmal_msg_port_action_reply { u32 status; /** The port action operation status */ }; /* MMAL buffer transfer */ /** Size of space reserved in a buffer message for short messages. */ #define MMAL_VC_SHORT_DATA 128 /** Signals that the current payload is the end of the stream of data */ #define MMAL_BUFFER_HEADER_FLAG_EOS BIT(0) /** Signals that the start of the current payload starts a frame */ #define MMAL_BUFFER_HEADER_FLAG_FRAME_START BIT(1) /** Signals that the end of the current payload ends a frame */ #define MMAL_BUFFER_HEADER_FLAG_FRAME_END BIT(2) /** Signals that the current payload contains only complete frames (>1) */ #define MMAL_BUFFER_HEADER_FLAG_FRAME \ (MMAL_BUFFER_HEADER_FLAG_FRAME_START|MMAL_BUFFER_HEADER_FLAG_FRAME_END) /** Signals that the current payload is a keyframe (i.e. self decodable) */ #define MMAL_BUFFER_HEADER_FLAG_KEYFRAME BIT(3) /** Signals a discontinuity in the stream of data (e.g. after a seek). * Can be used for instance by a decoder to reset its state */ #define MMAL_BUFFER_HEADER_FLAG_DISCONTINUITY BIT(4) /** Signals a buffer containing some kind of config data for the component * (e.g. codec config data) */ #define MMAL_BUFFER_HEADER_FLAG_CONFIG BIT(5) /** Signals an encrypted payload */ #define MMAL_BUFFER_HEADER_FLAG_ENCRYPTED BIT(6) /** Signals a buffer containing side information */ #define MMAL_BUFFER_HEADER_FLAG_CODECSIDEINFO BIT(7) /** Signals a buffer which is the snapshot/postview image from a stills * capture */ #define MMAL_BUFFER_HEADER_FLAGS_SNAPSHOT BIT(8) /** Signals a buffer which contains data known to be corrupted */ #define MMAL_BUFFER_HEADER_FLAG_CORRUPTED BIT(9) /** Signals that a buffer failed to be transmitted */ #define MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED BIT(10) struct mmal_driver_buffer { u32 magic; u32 component_handle; u32 port_handle; u32 client_context; }; /* buffer header */ struct mmal_buffer_header { u32 next; /* next header */ u32 priv; /* framework private data */ u32 cmd; u32 data; u32 alloc_size; u32 length; u32 offset; u32 flags; s64 pts; s64 dts; u32 type; u32 user_data; }; struct mmal_buffer_header_type_specific { union { struct { u32 planes; u32 offset[4]; u32 pitch[4]; u32 flags; } video; } u; }; struct mmal_msg_buffer_from_host { /* The front 32 bytes of the buffer header are copied * back to us in the reply to allow for context. This * area is used to store two mmal_driver_buffer structures to * allow for multiple concurrent service users. */ /* control data */ struct mmal_driver_buffer drvbuf; /* referenced control data for passthrough buffer management */ struct mmal_driver_buffer drvbuf_ref; struct mmal_buffer_header buffer_header; /* buffer header itself */ struct mmal_buffer_header_type_specific buffer_header_type_specific; s32 is_zero_copy; s32 has_reference; /** allows short data to be xfered in control message */ u32 payload_in_message; u8 short_data[MMAL_VC_SHORT_DATA]; }; /* port parameter setting */ #define MMAL_WORKER_PORT_PARAMETER_SPACE 96 struct mmal_msg_port_parameter_set { u32 component_handle; /* component */ u32 port_handle; /* port */ u32 id; /* Parameter ID */ u32 size; /* Parameter size */ uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE]; }; struct mmal_msg_port_parameter_set_reply { u32 status; /* enum mmal_msg_status todo: how does this * differ to the one in the header? */ }; /* port parameter getting */ struct mmal_msg_port_parameter_get { u32 component_handle; /* component */ u32 port_handle; /* port */ u32 id; /* Parameter ID */ u32 size; /* Parameter size */ }; struct mmal_msg_port_parameter_get_reply { u32 status; /* Status of mmal_port_parameter_get call */ u32 id; /* Parameter ID */ u32 size; /* Parameter size */ uint32_t value[MMAL_WORKER_PORT_PARAMETER_SPACE]; }; /* event messages */ #define MMAL_WORKER_EVENT_SPACE 256 struct mmal_msg_event_to_host { u32 client_component; /* component context */ u32 port_type; u32 port_num; u32 cmd; u32 length; u8 data[MMAL_WORKER_EVENT_SPACE]; u32 delayed_buffer; }; /* all mmal messages are serialised through this structure */ struct mmal_msg { /* header */ struct mmal_msg_header h; /* payload */ union { struct mmal_msg_version version; struct mmal_msg_component_create component_create; struct mmal_msg_component_create_reply component_create_reply; struct mmal_msg_component_destroy component_destroy; struct mmal_msg_component_destroy_reply component_destroy_reply; struct mmal_msg_component_enable component_enable; struct mmal_msg_component_enable_reply component_enable_reply; struct mmal_msg_component_disable component_disable; struct mmal_msg_component_disable_reply component_disable_reply; struct mmal_msg_port_info_get port_info_get; struct mmal_msg_port_info_get_reply port_info_get_reply; struct mmal_msg_port_info_set port_info_set; struct mmal_msg_port_info_set_reply port_info_set_reply; struct mmal_msg_port_action_port port_action_port; struct mmal_msg_port_action_handle port_action_handle; struct mmal_msg_port_action_reply port_action_reply; struct mmal_msg_buffer_from_host buffer_from_host; struct mmal_msg_port_parameter_set port_parameter_set; struct mmal_msg_port_parameter_set_reply port_parameter_set_reply; struct mmal_msg_port_parameter_get port_parameter_get; struct mmal_msg_port_parameter_get_reply port_parameter_get_reply; struct mmal_msg_event_to_host event_to_host; u8 payload[MMAL_MSG_MAX_PAYLOAD]; } u; };
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