/******************************************************************************* / / File: MediaDefs.h / / Description: Basic data types and defines for the Media Kit. / / Copyright 1997-1999, Be Incorporated, All Rights Reserved / *******************************************************************************/ #if !defined(_MEDIA_DEFS_H) #define _MEDIA_DEFS_H #include #include #include #include #if defined(__cplusplus) #include #include #endif struct media_node; #define B_MEDIA_NAME_LENGTH 64 enum { /* maybe migrate these into Errors.h */ B_MEDIA_SYSTEM_FAILURE = (int)B_MEDIA_ERROR_BASE+0x100, /* 80004100 */ B_MEDIA_BAD_NODE, B_MEDIA_NODE_BUSY, B_MEDIA_BAD_FORMAT, B_MEDIA_BAD_BUFFER, B_MEDIA_TOO_MANY_NODES, B_MEDIA_TOO_MANY_BUFFERS, B_MEDIA_NODE_ALREADY_EXISTS, B_MEDIA_BUFFER_ALREADY_EXISTS, B_MEDIA_CANNOT_SEEK, B_MEDIA_CANNOT_CHANGE_RUN_MODE, B_MEDIA_APP_ALREADY_REGISTERED, B_MEDIA_APP_NOT_REGISTERED, B_MEDIA_CANNOT_RECLAIM_BUFFERS, B_MEDIA_BUFFERS_NOT_RECLAIMED, B_MEDIA_TIME_SOURCE_STOPPED, B_MEDIA_TIME_SOURCE_BUSY, /* 80004110 */ B_MEDIA_BAD_SOURCE, B_MEDIA_BAD_DESTINATION, B_MEDIA_ALREADY_CONNECTED, B_MEDIA_NOT_CONNECTED, B_MEDIA_BAD_CLIP_FORMAT, B_MEDIA_ADDON_FAILED, B_MEDIA_ADDON_DISABLED, B_MEDIA_CHANGE_IN_PROGRESS, B_MEDIA_STALE_CHANGE_COUNT, B_MEDIA_ADDON_RESTRICTED, B_MEDIA_NO_HANDLER, B_MEDIA_DUPLICATE_FORMAT, B_MEDIA_REALTIME_DISABLED, B_MEDIA_REALTIME_UNAVAILABLE }; /* Notification message 'what's */ enum { // Note that BMediaNode::node_error also belongs in here! */ B_MEDIA_WILDCARD = 'TRWC', /* used to match any notification in Start/StopWatching */ B_MEDIA_NODE_CREATED = 'TRIA', /* "media_node_id" (multiple items) */ B_MEDIA_NODE_DELETED, /* "media_node_id" (multiple items) */ B_MEDIA_CONNECTION_MADE, /* "output", "input", "format" */ B_MEDIA_CONNECTION_BROKEN, /* "source", "destination" */ B_MEDIA_BUFFER_CREATED, /* "clone_info" -- handled by BMediaRoster */ B_MEDIA_BUFFER_DELETED, /* "media_buffer_id" -- handled by BMediaRoster */ B_MEDIA_TRANSPORT_STATE, /* "state", "location", "realtime" */ B_MEDIA_PARAMETER_CHANGED, /* N "node", "parameter" */ B_MEDIA_FORMAT_CHANGED, /* N "source", "destination", "format" */ B_MEDIA_WEB_CHANGED, /* N "node" */ B_MEDIA_DEFAULT_CHANGED, /* "default", "node" -- handled by BMediaRoster */ B_MEDIA_NEW_PARAMETER_VALUE, /* N "node", "parameter", "when", "value" */ B_MEDIA_NODE_STOPPED, /* N "node", "when" */ B_MEDIA_FLAVORS_CHANGED /* "be:addon_id", "be:new_count", "be:gone_count" */ }; enum media_type { B_MEDIA_NO_TYPE = -1, B_MEDIA_UNKNOWN_TYPE = 0, B_MEDIA_RAW_AUDIO = 1, /* uncompressed raw_audio -- linear relationship bytes <-> samples */ B_MEDIA_RAW_VIDEO, /* uncompressed raw_video -- linear relationship bytes <-> pixels */ B_MEDIA_VBL, /* raw data from VBL area, 1600/line */ B_MEDIA_TIMECODE, /* data format TBD */ B_MEDIA_MIDI, B_MEDIA_TEXT, /* typically closed captioning */ B_MEDIA_HTML, B_MEDIA_MULTISTREAM, /* AVI, etc */ B_MEDIA_PARAMETERS, /* BControllable change data */ B_MEDIA_ENCODED_AUDIO, /* dts, AC3, ... */ B_MEDIA_ENCODED_VIDEO, /* Indeo, MPEG, ... */ B_MEDIA_PRIVATE = 90000, /* Don't touch! */ B_MEDIA_FIRST_USER_TYPE = 100000 /* Use something bigger than this for */ /* experimentation with your own media forms */ }; enum node_kind { B_BUFFER_PRODUCER = 0x1, B_BUFFER_CONSUMER = 0x2, B_TIME_SOURCE = 0x4, B_CONTROLLABLE = 0x8, B_FILE_INTERFACE = 0x10, B_ENTITY_INTERFACE = 0x20, /* Set these flags for nodes that are suitable as default entities */ B_PHYSICAL_INPUT = 0x10000, B_PHYSICAL_OUTPUT = 0x20000, B_SYSTEM_MIXER = 0x40000 }; enum video_orientation { /* for orientation, which pixel is first and how do we scan each "line"? */ B_VIDEO_TOP_LEFT_RIGHT = 1, /* This is the typical progressive scan format */ B_VIDEO_BOTTOM_LEFT_RIGHT /* This is how BMP and TGA might scan */ }; enum media_flags /* data */ { B_MEDIA_FLAGS_VERSION = 1, /* uint32, bigger for newer */ B_MEDIA_FLAGS_PRIVATE = 0x40000000 /* private to Be */ }; enum media_producer_status { /* for producer status */ B_DATA_NOT_AVAILABLE = 1, B_DATA_AVAILABLE = 2, B_PRODUCER_STOPPED = 3 }; // realtime flags enum media_realtime_flags { B_MEDIA_REALTIME_ALLOCATOR = 0x1, B_MEDIA_REALTIME_AUDIO = 0x2, B_MEDIA_REALTIME_VIDEO = 0x4, B_MEDIA_REALTIME_ANYKIND = 0xffff }; enum media_frame_flags { B_MEDIA_KEY_FRAME = 0x1 }; #define B_MEDIA_ANY_QUALITY 0.0f #define B_MEDIA_LOW_QUALITY 0.1f #define B_MEDIA_MEDIUM_QUALITY 0.5f #define B_MEDIA_HIGH_QUALITY 1.0f #if !defined(_MULTI_AUDIO_H) /* #define in protocol header */ enum media_multi_channels { B_CHANNEL_LEFT = 0x1, B_CHANNEL_RIGHT = 0x2, B_CHANNEL_CENTER = 0x4, /* 5.1+ or fake surround */ B_CHANNEL_SUB = 0x8, /* 5.1+ */ B_CHANNEL_REARLEFT = 0x10, /* quad surround or 5.1+ */ B_CHANNEL_REARRIGHT = 0x20, /* quad surround or 5.1+ */ B_CHANNEL_FRONT_LEFT_CENTER = 0x40, B_CHANNEL_FRONT_RIGHT_CENTER = 0x80, B_CHANNEL_BACK_CENTER = 0x100, /* 6.1 or fake surround */ B_CHANNEL_SIDE_LEFT = 0x200, B_CHANNEL_SIDE_RIGHT = 0x400, B_CHANNEL_TOP_CENTER = 0x800, B_CHANNEL_TOP_FRONT_LEFT = 0x1000, B_CHANNEL_TOP_FRONT_CENTER = 0x2000, B_CHANNEL_TOP_FRONT_RIGHT = 0x4000, B_CHANNEL_TOP_BACK_LEFT = 0x8000, B_CHANNEL_TOP_BACK_CENTER = 0x10000, B_CHANNEL_TOP_BACK_RIGHT = 0x20000 }; enum media_multi_matrix { B_MATRIX_PROLOGIC_LR = 0x1, B_MATRIX_AMBISONIC_WXYZ = 0x4 }; #endif typedef int32 media_node_id; typedef int32 media_buffer_id; typedef int32 media_addon_id; #if defined(__cplusplus) struct media_destination { media_destination(port_id, int32); media_destination(const media_destination & clone); media_destination & operator=(const media_destination & clone); media_destination(); ~media_destination(); port_id port; /* can be different from media_node.port */ int32 id; static media_destination null; private: uint32 _reserved_media_destination_[2]; }; struct media_source { media_source(port_id, int32); media_source(const media_source & clone); media_source & operator=(const media_source & clone); media_source(); ~media_source(); port_id port; /* must be the same as media_node.port for owner */ int32 id; static media_source null; private: uint32 _reserved_media_source_[2]; }; bool operator==(const media_destination & a, const media_destination & b); bool operator!=(const media_destination & a, const media_destination & b); bool operator<(const media_destination & a, const media_destination & b); bool operator==(const media_source & a, const media_source & b); bool operator!=(const media_source & a, const media_source & b); bool operator<(const media_source & a, const media_source & b); bool operator==(const media_node & a, const media_node & b); bool operator!=(const media_node & a, const media_node & b); bool operator<(const media_node & a, const media_node & b); /* Buffers are low-level constructs identified by an ID. */ /* Buffers consist of the actual data area, plus a 64-byte */ /* header area that is different for each type. */ /* Buffers contain typed data. Type is not part of the */ /* buffer header; it's negotiated out-of-bounds by nodes. */ enum { B_MEDIA_BIG_ENDIAN = 1, B_MEDIA_LITTLE_ENDIAN = 2, #if B_HOST_IS_BENDIAN B_MEDIA_HOST_ENDIAN = B_MEDIA_BIG_ENDIAN #else B_MEDIA_HOST_ENDIAN = B_MEDIA_LITTLE_ENDIAN #endif }; struct media_multi_audio_format; struct media_raw_audio_format { enum { // for "format" B_AUDIO_FLOAT = 0x24, // 0 == mid, -1.0 == bottom, 1.0 == top (the preferred format for non-game audio) B_AUDIO_DOUBLE = 0x28, // 0 == mid, -1.0 == bottom, 1.0 == top (only useful for pro audio) B_AUDIO_INT = 0x4, // 0 == mid, 0x80000001 == bottom, 0x7fffffff == top (all >16-bit formats, left-adjusted) B_AUDIO_SHORT = 0x2, // 0 == mid, -32767 == bottom, +32767 == top B_AUDIO_UCHAR = 0x11, // 128 == mid, 1 == bottom, 255 == top (discouraged but supported format) B_AUDIO_CHAR = 0x1, // 0 == mid, -127 == bottom, +127 == top (not officially supported format) B_AUDIO_SIZE_MASK = 0xf }; // we guarantee that (format&0xf) == sizeof(sample) for raw formats float frame_rate; uint32 channel_count; // 1 or 2, mostly uint32 format; // for compressed formats, go to media_encoded_audio_format uint32 byte_order; // 2 for little endian (B_MEDIA_LITTLE_ENDIAN), 1 for big endian (B_MEDIA_BIG_ENDIAN) size_t buffer_size; // size of each buffer static media_multi_audio_format wildcard; }; struct media_audio_header { // please put actual data at the end int32 _reserved_[16]; // gotta have something }; struct media_multi_audio_info { uint32 channel_mask; // bitmask int16 valid_bits; // if < 32, for B_AUDIO_INT uint16 matrix_mask; // each of these bits may mean more than one channel uint32 _reserved_b[3]; }; #if defined(__cplusplus) struct media_multi_audio_format : public media_raw_audio_format, public media_multi_audio_info { static media_multi_audio_format wildcard; }; #else struct media_multi_audio_format { media_raw_audio_format raw; media_multi_audio_info multi; }; #endif struct media_encoded_audio_format { enum audio_encoding { B_ANY }; media_raw_audio_format output; audio_encoding encoding; float bit_rate; // BIT rate, not byte rate size_t frame_size; media_multi_audio_info multi_info; uint32 _reserved_[3]; static media_encoded_audio_format wildcard; }; struct media_encoded_audio_header { // please put actual data at the end int32 _reserved_0[14]; // gotta have something uint32 buffer_flags; // B_MEDIA_KEY_FRAME for key buffers (ADPCM etc) uchar unused_mask; // mask of unused bits for the last byte of data uchar _reserved_2[3]; }; enum media_display_flags { B_F1_DOMINANT = 0x1, // The first buffer sent (temporally) will be an F1 field B_F2_DOMINANT = 0x2, // The first buffer sent (temporally) will be an F2 field B_TOP_SCANLINE_F1 = 0x4, // The topmost scanline of the output buffer belongs to F1 B_TOP_SCANLINE_F2 = 0x8 // The topmost scanline of the output buffer belongs to F2 }; struct media_video_display_info { color_space format; uint32 line_width; uint32 line_count; // total of all interlace fields uint32 bytes_per_row; // bytes_per_row is in format, not header, because it's part of SetBuffers uint32 pixel_offset; // (in pixels) ... These are offsets from the start of the buffer ... uint32 line_offset; // (in lines) ... to the start of the field. Think "buffer == framebuffer" ... // ... when the window displaying the active field moves on screen. uint32 flags; uint32 _reserved_[3]; static media_video_display_info wildcard; }; struct media_raw_video_format { float field_rate; uint32 interlace; // how many fields per frame -- 1 means progressive (non-interlaced) uint32 first_active; // 0, typically (wildcard, or "don't care") uint32 last_active; // line_count-1, if first_active is 0. uint32 orientation; // B_VIDEO_TOP_LEFT_RIGHT is preferred // PIXEL aspect ratio; not active area aspect ratio... uint16 pixel_width_aspect; // 1:1 has 1 here, 4:3 has 4 here uint16 pixel_height_aspect; // 1:1 has 1 here, 4:3 has 3 here media_video_display_info display; static media_raw_video_format wildcard; }; struct media_video_header { uint32 _reserved_[12]; // at the top to push used data to the end float field_gamma; uint32 field_sequence; // sequence since start of capture -- may roll over if machine is on for a LONG time uint16 field_number; // 0 .. {interlace-1}; F1 == 0 ("odd"), F2 == 1 ("even") uint16 pulldown_number; // 0..2 for pulldown duplicated sequence uint16 first_active_line; // the NTSC/PAL line number (1-based) of the first line in this field uint16 line_count; // number of active lines in buffer }; struct media_encoded_video_format { enum video_encoding { B_ANY }; media_raw_video_format output; // set unknowns to wildcard float avg_bit_rate; float max_bit_rate; video_encoding encoding; size_t frame_size; int16 forward_history; // maximum forward memory required by algorithm int16 backward_history; // maximum backward memory required by algorithm uint32 _reserved_[3]; // can't grow more than this static media_encoded_video_format wildcard; }; struct media_encoded_video_header { /* please put actual data at the end */ int32 _reserved_1[9]; // gotta have something... uint32 field_flags; // B_MEDIA_KEY_FRAME int16 forward_history; // forward memory required by this buffer (0 for key frames) int16 backward_history; // backward memory required by this buffer (0 for key frames) uchar unused_mask; // mask of unused bits for the last byte of data uchar _reserved_2[3]; float field_gamma; uint32 field_sequence; // sequence since start of capture uint16 field_number; // 0 .. {interlace-1}; F1 == 0, F2 == 1 uint16 pulldown_number; // 0..2 for pulldown duplicated sequence uint16 first_active_line; // 0 or 1, typically, but could be 10 or 11 for full-NTSC formats uint16 line_count; // number of actual lines in buffer }; struct media_multistream_format { enum { B_ANY = 0, B_VID = 1, // raw raw_video/raw_audio buffers B_AVI, B_MPEG1, B_MPEG2, B_QUICKTIME, B_PRIVATE = 90000, B_FIRST_USER_TYPE = 100000 // user formats >= 100000 }; float avg_bit_rate; // 8 * byte rate, on average float max_bit_rate; // 8 * byte rate, tops uint32 avg_chunk_size; // == max_chunk_size for fixed-size chunks uint32 max_chunk_size; // max buffer size enum { B_HEADER_HAS_FLAGS = 0x1, // are flags important? B_CLEAN_BUFFERS = 0x2, // each buffer represents an integral number of "frames" B_HOMOGENOUS_BUFFERS = 0x4 // a buffer has only one format in it }; uint32 flags; int32 format; uint32 _reserved_[2]; struct vid_info { float frame_rate; uint16 width; uint16 height; color_space space; float sampling_rate; uint32 sample_format; uint16 byte_order; uint16 channel_count; }; struct avi_info { uint32 us_per_frame; uint16 width; uint16 height; uint16 _reserved_; uint16 type_count; media_type types[5]; }; union { vid_info vid; avi_info avi; } u; static media_multistream_format wildcard; }; struct media_multistream_header { uint32 _reserved_[14]; uchar unused_mask; // mask of unused bits for the last byte of data uchar _reserved_2[3]; enum { B_MASTER_HEADER = 0x1, // for master stream header data in buffer B_SUBSTREAM_HEADER = 0x2, // for sub-stream header data in buffer B_COMPLETE_BUFFER = 0x4 // data is an integral number of "frames" }; uint32 flags; }; extern const type_code B_CODEC_TYPE_INFO; enum media_format_flags { B_MEDIA_RETAINED_DATA = 0x1, B_MEDIA_MULTIPLE_BUFFERS = 0x2, B_MEDIA_CONTIGUOUS_BUFFER = 0x4, B_MEDIA_LINEAR_UPDATES = 0x8, B_MEDIA_MAUI_UNDEFINED_FLAGS = ~0xf /* always deny these */ }; /* typically, a field of 0 means "anything" or "wildcard" */ struct media_format { /* no more than 192 bytes */ media_type type; type_code user_data_type; uchar user_data[48]; uint32 _reserved_[3]; uint16 require_flags; // media_format_flags uint16 deny_flags; // media_format_flags private: void * meta_data; int32 meta_data_size; area_id meta_data_area; area_id __unused_was_use_area; team_id __unused_was_team; void * __unused_was_thisPtr; public: union { media_multi_audio_format raw_audio; media_raw_video_format raw_video; media_multistream_format multistream; media_encoded_audio_format encoded_audio; media_encoded_video_format encoded_video; char _reserved_[96]; // pad to 96 bytes } u; bool IsVideo() const { return (type==B_MEDIA_ENCODED_VIDEO)||(type==B_MEDIA_RAW_VIDEO); }; uint32 Width() const { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.line_width:u.raw_video.display.line_width; }; uint32 Height() const { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.line_count:u.raw_video.display.line_count; }; color_space ColorSpace() const { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.format:u.raw_video.display.format; }; uint32 & Width() { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.line_width:u.raw_video.display.line_width; }; uint32 & Height() { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.line_count:u.raw_video.display.line_count; }; color_space & ColorSpace() { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.output.display.format:u.raw_video.display.format; }; bool IsAudio() const { return (type==B_MEDIA_ENCODED_AUDIO)||(type==B_MEDIA_RAW_AUDIO); }; uint32 AudioFormat() const { return (type==B_MEDIA_ENCODED_AUDIO)?u.encoded_audio.output.format:u.raw_audio.format; }; uint32 & AudioFormat() { return (type==B_MEDIA_ENCODED_AUDIO)?u.encoded_audio.output.format:u.raw_audio.format; }; uint32 AudioFrameSize() const { return (type==B_MEDIA_ENCODED_AUDIO)?(u.encoded_audio.output.format & 0xf)*u.encoded_audio.output.channel_count:(u.raw_audio.format & 0xf)*u.raw_audio.channel_count; }; uint32 Encoding() const { return (type==B_MEDIA_ENCODED_VIDEO)?u.encoded_video.encoding:(type==B_MEDIA_ENCODED_AUDIO)?u.encoded_audio.encoding:(type==B_MEDIA_MULTISTREAM)?u.multistream.format:0UL; } bool Matches(const media_format *otherFormat) const; void SpecializeTo(const media_format *otherFormat); status_t SetMetaData(const void *data, size_t size); const void * MetaData() const; int32 MetaDataSize() const; media_format(); media_format(const media_format &other); ~media_format(); media_format & operator=(const media_format & clone); }; bool operator==(const media_raw_audio_format & a, const media_raw_audio_format & b); bool operator==(const media_multi_audio_info & a, const media_multi_audio_info & b); bool operator==(const media_multi_audio_format & a, const media_multi_audio_format & b); bool operator==(const media_encoded_audio_format & a, const media_encoded_audio_format & b); bool operator==(const media_video_display_info & a, const media_video_display_info & b); bool operator==(const media_raw_video_format & a, const media_raw_video_format & b); bool operator==(const media_encoded_video_format & a, const media_encoded_video_format & b); bool operator==(const media_multistream_format::vid_info & a, const media_multistream_format::vid_info & b); bool operator==(const media_multistream_format::avi_info & a, const media_multistream_format::avi_info & b); bool operator==(const media_multistream_format & a, const media_multistream_format & b); bool operator==(const media_format & a, const media_format & b); /* return true if a and b are compatible (accounting for wildcards) */ bool format_is_compatible(const media_format & a, const media_format & b); /* a is the format you want to feed to something accepting b */ bool string_for_format(const media_format & f, char * buf, size_t size); struct media_seek_tag { char data[16]; }; struct media_header_time_code { int8 type; // See TimeCode.h; don't use the "DEFAULT" value int8 _reserved; int8 hours; int8 minutes; int8 seconds; int8 frames; int16 subframes; // -1 if not available }; struct media_header { // Broadcast() fills in fields marked with "//+" media_type type; // what kind of data (for union) media_buffer_id buffer; //+ what buffer does this header go with? int32 destination; //+ what 'socket' is this intended for? media_node_id time_source; // node that encoded start_time uint32 _deprecated_; // used to be change_tag uint32 size_used; // size within buffer that is used bigtime_t start_time; // performance time area_id owner; //+ buffer owner info area enum { B_SEEK_TAG = 'TRST', // user data type of the codec seek // protocol. size of seek tag is 16 bytes B_TIME_CODE = 'TRTC' // user data is media_header_time_code }; type_code user_data_type; uchar user_data[64]; // user_data_type indicates what this is uint32 _reserved_[2]; off_t file_pos; // where in a file this data came from size_t orig_size; // and how big it was. if unused, zero out uint32 data_offset; // offset within buffer (already reflected in Data()) union { media_audio_header raw_audio; media_video_header raw_video; media_multistream_header multistream; media_encoded_audio_header encoded_audio; media_encoded_video_header encoded_video; char _reserved_[64]; // pad to 64 bytes } u; }; struct media_file_format_id { ino_t node; dev_t device; uint32 internal_id; }; bool operator==(const media_file_format_id & a, const media_file_format_id & b); bool operator<(const media_file_format_id & a, const media_file_format_id & b); typedef enum { B_ANY_FORMAT_FAMILY = 0, B_BEOS_FORMAT_FAMILY = 1, B_QUICKTIME_FORMAT_FAMILY = 2, /* QuickTime is a registered trademark of Apple Computer */ B_AVI_FORMAT_FAMILY = 3, B_ASF_FORMAT_FAMILY = 4, B_MPEG_FORMAT_FAMILY = 5, B_WAV_FORMAT_FAMILY = 6, B_AIFF_FORMAT_FAMILY = 7, B_AVR_FORMAT_FAMILY = 8, B_MISC_FORMAT_FAMILY = 99999, } media_format_family; struct media_file_format { enum { /* flags */ B_READABLE = 0x1, B_WRITABLE = 0x2, B_PERFECTLY_SEEKABLE = 0x4, B_IMPERFECTLY_SEEKABLE = 0x8, B_KNOWS_RAW_VIDEO = 0x10, B_KNOWS_RAW_AUDIO = 0x20, B_KNOWS_MIDI = 0x40, B_KNOWS_ENCODED_VIDEO = 0x80, B_KNOWS_ENCODED_AUDIO = 0x100, B_KNOWS_OTHER = 0x1000000, /* clipping, text, control, ... */ B_KNOWS_ANYTHING = 0x2000000 }; uint32 capabilities; // can this format support audio, video, etc media_file_format_id id; // opaque id used to construct a BMediaFile media_format_family family; // one of the family enums int32 version; // 100 for 1.0 uint32 _reserved_[25]; char mime_type[64]; // eg: "video/quicktime", "audio/aiff", etc char pretty_name[64]; // eg: "QuickTime File Format" char short_name[32]; // eg: "quicktime", "avi", "mpeg" char file_extension[8]; // eg: "mov", "avi", "mpg" char reserved[88]; }; // // Use this function iterate through available file format writers // status_t get_next_file_format(int32 *cookie, media_file_format *mfi); /* This struct is guaranteed to be large enough for any message your service */ /* thread will get for any media_node -- 16k is an upper-bound size limit. */ /* In your thread, read_port() into this struct, and call HandleMessage() on it. */ const size_t B_MEDIA_MESSAGE_SIZE = 16384; extern const char * B_MEDIA_SERVER_SIGNATURE; class media_node; /* found in MediaNode.h */ struct media_input; struct media_output; struct live_node_info; struct dormant_node_info; struct buffer_clone_info; // If you for some reason need to get rid of the media_server (and friends) // use these functions, rather than sending messages yourself. // The callback will be called for various stages of the process, with 100 meaning completely done // The callback should always return TRUE for the time being. status_t shutdown_media_server(bigtime_t timeout = B_INFINITE_TIMEOUT, bool (*progress)(int stage, const char * message, void * cookie) = NULL, void * cookie = NULL); status_t launch_media_server(uint32 flags = 0); // Given an image_id, prepare that image_id for realtime media // If the kind of media indicated by "flags" is not enabled for real-time, // B_MEDIA_REALTIME_DISABLED is returned. // If there are not enough system resources to enable real-time performance, // B_MEDIA_REALTIME_UNAVAILABLE is returned. status_t media_realtime_init_image(image_id image, uint32 flags); // Given a thread ID, and an optional indication of what the thread is // doing in "flags", prepare the thread for real-time media performance. // Currently, this means locking the thread stack, up to size_used bytes, // or all of it if 0 is passed. Typically, you will not be using all // 256 kB of the stack, so you should pass some smaller value you determine // from profiling the thread; typically in the 32-64kB range. // Return values are the same as for media_prepare_realtime_image(). status_t media_realtime_init_thread(thread_id thread, size_t stack_used, uint32 flags); // A teeny bit of legacy preserved for BSoundFile from R3. // These came from the old MediaDefs.h; don't use them // unless you get them from BSoundFile. /* values for byte_ordering */ enum { B_BIG_ENDIAN, B_LITTLE_ENDIAN }; /* values for sample_format */ enum { B_UNDEFINED_SAMPLES, B_LINEAR_SAMPLES, B_FLOAT_SAMPLES, B_MULAW_SAMPLES }; /* for encoders and file writers */ struct media_encode_info { uint32 flags; /* B_MEDIA_KEY_FRAME, set before every use */ int32 used_data_size; /* data size used by other tracks */ /* add output size used by this encoder */ bigtime_t start_time; /* us from start of file */ bigtime_t time_to_encode; /* 0 - hurry up, B_INFINITE_TIMEOUT - don't care */ int32 _pad[22]; void *file_format_data; /* file format specific info */ size_t file_format_data_size; void *codec_data; /* codec specific info */ size_t codec_data_size; media_encode_info(); }; struct encode_parameters { float quality; // 0.0-1.0 , 1.0 is high quality int32 avg_field_size; // in bytes int32 max_field_size; // in bytes int32 _pad[27]; void *user_data; // codec specific info size_t user_data_size; }; struct media_decode_info { bigtime_t time_to_decode; /* 0 - hurry up, B_INFINITE_TIMEOUT - don't care */ int32 _pad[26]; void *file_format_data; /* file format specific info */ size_t file_format_data_size; void *codec_data; /* codec specific info */ size_t codec_data_size; media_decode_info(); }; #endif // __cplusplus #endif /* MEDIA_DEFS_H */