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haiku/headers/os/media/MediaDefs.h

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/*
* Copyright 2009, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _MEDIA_DEFS_H
#define _MEDIA_DEFS_H
/*! Basic data types and defines for the Media Kit. */
#include <OS.h>
#include <ByteOrder.h>
#if defined(__cplusplus)
# include <GraphicsDefs.h>
# include <Looper.h>
class media_node;
#else
struct media_node;
#endif
#define B_MEDIA_NAME_LENGTH 64
/* Notification messages 'what' fields */
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" */
B_MEDIA_SERVER_STARTED,
B_MEDIA_SERVER_QUIT
};
enum media_type {
B_MEDIA_NO_TYPE = -1,
B_MEDIA_UNKNOWN_TYPE = 0,
B_MEDIA_RAW_AUDIO = 1, /* uncompressed raw_audio */
B_MEDIA_RAW_VIDEO, /* uncompressed raw_video */
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, /* MP3, AC-3, ... */
B_MEDIA_ENCODED_VIDEO, /* H.264, Theora, ... */
B_MEDIA_PRIVATE = 90000,
/* This are reserved. */
B_MEDIA_FIRST_USER_TYPE = 100000
/* Use something bigger than this for */
/* experimentation with your own media */
/* formats. */
};
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 system nodes. */
B_PHYSICAL_INPUT = 0x10000,
B_PHYSICAL_OUTPUT = 0x20000,
B_SYSTEM_MIXER = 0x40000
};
enum video_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 */
};
/* data */
enum media_flags
{
B_MEDIA_FLAGS_VERSION = 1,
/* uint32, greater for newer versions */
B_MEDIA_FLAGS_PRIVATE = 0x40000000
/* private to Haiku */
};
/* for producer status */
enum media_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
#ifndef _MULTI_AUDIO_H /* #define in protocol header */
enum media_multi_channels {
B_CHANNEL_LEFT = 0x00001,
B_CHANNEL_RIGHT = 0x00002,
B_CHANNEL_CENTER = 0x00004, /* 5.1+ or fake surround */
B_CHANNEL_SUB = 0x00008, /* 5.1+ */
B_CHANNEL_REARLEFT = 0x00010, /* quad surround or 5.1+ */
B_CHANNEL_REARRIGHT = 0x00020, /* quad surround or 5.1+ */
B_CHANNEL_FRONT_LEFT_CENTER = 0x00040,
B_CHANNEL_FRONT_RIGHT_CENTER = 0x00080,
B_CHANNEL_BACK_CENTER = 0x00100, /* 6.1 or fake surround */
B_CHANNEL_SIDE_LEFT = 0x00200,
B_CHANNEL_SIDE_RIGHT = 0x00400,
B_CHANNEL_TOP_CENTER = 0x00800,
B_CHANNEL_TOP_FRONT_LEFT = 0x01000,
B_CHANNEL_TOP_FRONT_CENTER = 0x02000,
B_CHANNEL_TOP_FRONT_RIGHT = 0x04000,
B_CHANNEL_TOP_BACK_LEFT = 0x08000,
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 // !_MULTI_AUDIO_H
typedef int32 media_node_id;
typedef int32 media_buffer_id;
typedef int32 media_addon_id;
#if defined(__cplusplus)
struct media_destination {
media_destination();
media_destination(port_id, int32);
media_destination(
const media_destination& other);
~media_destination();
media_destination& operator=(const media_destination& other);
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();
media_source(port_id, int32);
media_source(const media_source& other);
~media_source();
media_source& operator=(const media_source& other);
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 {
// possible values for "format"
enum {
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
// This mask can be used to obtain the sample size
// for raw formats: (format & 0xf) == sizeof(sample)
};
float frame_rate;
uint32 channel_count;
uint32 format; // see possible values above
uint32 byte_order; // B_MEDIA_LITTLE_ENDIAN or B_MEDIA_BIG_ENDIAN
size_t buffer_size; // size of each buffer
static media_multi_audio_format wildcard;
};
struct media_audio_header {
// TODO: Refine this structure and put actual data at the end
int32 _reserved_[14];
float frame_rate;
uint32 channel_count;
};
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];
};
struct media_multi_audio_format : public media_raw_audio_format,
public media_multi_audio_info {
static media_multi_audio_format wildcard;
};
struct media_encoded_audio_format {
enum audio_encoding {
B_ANY
};
media_raw_audio_format output;
audio_encoding encoding;
float bit_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 {
// NOTE: More data fields need to go to the end
int32 _reserved_0[14];
uint32 buffer_flags;
// B_MEDIA_KEY_FRAME for key frame chunks
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; // sum of all interlace fields lines
uint32 bytes_per_row; // bytes_per_row is in format, not header,
// because it's part of SetBuffers
uint32 pixel_offset; // (in pixels) Offset from the start of the
// buffer (see below).
uint32 line_offset; // (in lines) Offset 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; // Number of fields per frame: 1 means
// progressive (non-interlaced) frames.
uint32 first_active; // Index of first active line. 0, typically
// (wildcard, or "don't care")
uint32 last_active; // Index of last active line (typically
// line_count - 1, if first_active is 0.
uint32 orientation; // B_VIDEO_TOP_LEFT_RIGHT is preferred.
// This is the display aspect ratio (DAR). Usually, you would reduce the
// width and height of the intended output frame size as far as possible
// without changing their ratio. Note that you should not put 1 in both
// fields to mean "undistorted pixels", unless you really intend square
// video output!
uint16 pixel_width_aspect; // 1:1 has 1 here, 4:3 has 4 here
// 16:9 has 16 here!
uint16 pixel_height_aspect; // 1:1 has 1 here, 4:3 has 3 here
// 16:9 has 9 here!
media_video_display_info display;
static media_raw_video_format wildcard;
};
struct media_video_header {
uint32 _reserved_[8]; // NOTE: Keep reserved data at the top!
uint32 display_line_width; // Number of pixels per display_line
uint32 display_line_count; // Sum of all interlace fields lines
uint32 bytes_per_row; // Number of bytes in a display_line
// (padding bytes excluded)
uint16 pixel_width_aspect; // 1:1 has 1 here, 4:3 has 4 here
// 16:9 has 16 here!
uint16 pixel_height_aspect;// 1:1 has 1 here, 4:3 has 3 here
// 16:9 has 9 here!
float field_gamma;
uint32 field_sequence; // Sequence number 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; // The 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 codec
int16 backward_history; // maximum backward memory
// required by codec
uint32 _reserved_[3]; // This structure cannot grow
// more than this (embedded)
// in media_format union
static media_encoded_video_format wildcard;
};
struct media_encoded_video_header {
// NOTE: More data fields need to go at the end of this structure.
int32 _reserved_1[9];
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
};
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 // NOTE: Always deny these flags
// in new code.
};
// NOTE: A field of 0 typically means "anything" or "wildcard".
// NOTE: This structure should not be bigger than 192 bytes!
struct media_format {
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;
uint32 Width() const;
uint32 Height() const;
color_space ColorSpace() const;
uint32& Width();
uint32& Height();
color_space& ColorSpace();
bool IsAudio() const;
uint32 AudioFormat() const;
uint32& AudioFormat();
uint32 AudioFrameSize() const;
uint32 Encoding() const;
bool Matches(const media_format* other) const;
void SpecializeTo(const media_format* other);
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& other);
};
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);
bool format_is_compatible(const media_format & a, const media_format & b);
// Returns true if a and b are compatible (accounting for wildcards)
// (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; // Set to -1 if not available
};
// Broadcast() fills in fields marked with "//+"
struct media_header {
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
int32 source;
port_id source_port;
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 {
// Possible flags for capabilities bitmask
enum {
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, // For example sub-title streams
B_KNOWS_ANYTHING = 0x2000000
};
uint32 capabilities; // Bitmask, see flags above
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];
char pretty_name[64]; // "QuickTime File Format"
char short_name[32]; // "quicktime", "avi", "mpeg"
char file_extension[8]; // "mov", "avi", "mpg"
char reserved[88];
};
// Initialize the cookie to 0 and keep calling this function to iterate
// over all available media file format writers.
status_t get_next_file_format(int32* cookie, media_file_format* mfi);
// A buffer of this size is guaranteed to be large enough to hold any
// message, which your service thread can read from read_port() and
// passes on to HandleMessage().
const size_t B_MEDIA_MESSAGE_SIZE = 16384;
extern const char* B_MEDIA_SERVER_SIGNATURE;
class media_node;
struct media_input;
struct media_output;
struct live_node_info;
struct dormant_node_info;
struct buffer_clone_info;
// Functions which control the shutdown and launching process of the
// media_server and it's friends. You can provide a call back hook which
// will be called during various steps of the process. This callback should
// currently always return TRUE. A 'stage' value of 100 means the process is
// completely finished. Differently from BeOS the functions automatically
// send notifications to the Deskbar if not differently specified.
// It's also provided a new version of launch_media_server allowing
// to specify a custom callback for notifications.
status_t launch_media_server(bigtime_t timeout = B_INFINITE_TIMEOUT,
bool (*progress)(int stage, const char* message, void* cookie) = NULL,
void* cookie = NULL, uint32 flags = 0);
status_t shutdown_media_server(bigtime_t timeout = B_INFINITE_TIMEOUT,
bool (*progress)(int stage, const char* message, void* cookie) = NULL,
void* cookie = NULL);
// 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
};
// #pragma mark - 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();
};
// #pragma mark - inline implementations
inline bool
media_format::IsVideo() const
{
return type == B_MEDIA_ENCODED_VIDEO || type == B_MEDIA_RAW_VIDEO;
}
inline uint32
media_format::Width() const
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.line_width
: u.raw_video.display.line_width;
}
inline uint32
media_format::Height() const
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.line_count
: u.raw_video.display.line_count;
}
inline color_space
media_format::ColorSpace() const
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.format
: u.raw_video.display.format;
}
inline uint32&
media_format::Width()
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.line_width
: u.raw_video.display.line_width;
}
inline uint32&
media_format::Height()
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.line_count
: u.raw_video.display.line_count;
}
inline color_space&
media_format::ColorSpace()
{
return type == B_MEDIA_ENCODED_VIDEO
? u.encoded_video.output.display.format
: u.raw_video.display.format;
}
inline bool
media_format::IsAudio() const
{
return type == B_MEDIA_ENCODED_AUDIO || type == B_MEDIA_RAW_AUDIO;
}
inline uint32
media_format::AudioFormat() const
{
return type == B_MEDIA_ENCODED_AUDIO
? u.encoded_audio.output.format : u.raw_audio.format;
}
inline uint32&
media_format::AudioFormat()
{
return type == B_MEDIA_ENCODED_AUDIO
? u.encoded_audio.output.format : u.raw_audio.format;
}
inline uint32
media_format::AudioFrameSize() const
{
return type == B_MEDIA_ENCODED_AUDIO
? (u.encoded_audio.output.format
& media_raw_audio_format::B_AUDIO_SIZE_MASK)
* u.encoded_audio.output.channel_count
: (u.raw_audio.format & media_raw_audio_format::B_AUDIO_SIZE_MASK)
* u.raw_audio.channel_count;
}
inline uint32
media_format::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;
}
#endif /* end of __cplusplus section */
#endif /* MEDIA_DEFS_H */
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