The Media Kit
BBufferConsumer
Declared in: be/media/BufferConsumer.h
BBufferConsumer()
The consumer argument used to take a default value (B_MEDIA_UNKNOWN_TYPE); it no longer does.
BBufferProducer
Declared in: be/media/BufferProducer.h
BBufferProducer()
The producer argument used to take a default value (B_MEDIA_UNKNOWN_TYPE); it no longer does.
suggestion_quality
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enum suggestion_quality(
B_ANY_QUALITY = 0,
B_LOW_QUALITY = 10,
B_MEDIUM_QUALITY = 50,
B_HIGH_QUALITY = 100)
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These constants can be used as values for the quality argument to FormatSuggestionRequested(). Although you don't have to use these constants, it's expected that you'll restrict your request to 0-100.
BMediaAddOn
Declared in: media/MediaAddOn.h
The following functions are no longer pure virtual, they are just virtual: InitCheck(), CountFlavors(), GetFlavorAt(), InstantiateNodeFor(), GetConfigurationFor(), WantsToStart(), AutoStart()
NotifyFlavorChange()
Calling this will cause everyone concerned to be notified of the change to your flavor, and also cause the media server to re-scan your flavor info. It is thread safe. Note that this function is defined protected.
BMediaFormats
Declared in: media/MediaFormats.h
MakeFormatFor()
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status_t MakeFormatFor(const media_format_description * descs, int32 desc_count, media_format * io_format, uint32 flags = 0, void * _reserved = 0);
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GetBeOSFormatFor()
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static status_t GetBeOSFormatFor(uint32 fourcc, media_format * out_format, media_type type = B_MEDIA_UNKNOWN_TYPE)
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GetAVIFormatFor()
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static status_t GetAVIFormatFor(uint32 fourcc, media_format * out_format, media_type type = B_MEDIA_UNKNOWN_TYPE)
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GetQuicktimeFormatFor
get_next_encoder()
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status_t get_next_encoder(int32 *cookie, media_codec_info *ei);
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status_t get_next_encoder( int32 *cookie, const media_file_format *mfi, const media_format *input_format, const media_format *output_format, media_codec_info *ei, media_format *accepted_input_format, media_format *accepted_output_format)
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- mfi comes from get_next_file_format(), pass NULL if you don't care.
- input_format is the type of data given to the encoder, wildcards are allowed.
- output_format: the desired output format, wildcards allowed.
- ei: information about the encoder.
- accepted_input_format: Type of data that the encoder will accept as input. Wildcards given in input_format will be specialized here.
- accepted_output_format: The type of data that the encoder will output. Wildcards in output_format will be specialized here.
does_file_accept_format()
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bool does_file_accept_format(const media_file_format *mfi, const media_format *format);
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typedef
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media_avr_description
Supports the avr format
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typedef struct {
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uint32 id;
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} media_avr_description;
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enum
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make_format_flags
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enum make_format_flags {
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B_EXCLUSIVE = 0x1, //Fail if this format has already been registered
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B_NO_MERGE = 0x2, //Don>t re-number any formats if there are multiple clashing previous registrations, but fail instead
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B_SET_DEFAULT = 0x4 //Set the first format to be the default for the format family (when registering more than one in the same family). Only use in Encoder add-ons.
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}
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BMediaEventLooper
Declared in: media/MediaEventLooper.h
ControlThread()
thread_id
ControlThread
()
Protected function to return the id of the thread running this BMediaEventLooper.
BMediaFile
Declared in: media/MediaFile.h
BMediaFile()
Two new constructors for read-only access to files:
BMediaRoster
Declared in: media/mediaRoster.h
GetAudioOutput()
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SetAudioOuput()
New versions of these functions.
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status_t GetAudioOutput(media_node * out_node, int32 * out_input_id, BString * out_input_name)
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status_t SetAudioOuput(const media_input & input_to_output)
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GetAllInputsFor()
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GetAllOutputFor()
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status_t GetAllInputsFor(const media_node & node, media_input * out_inputs, int32 buf_num_inputs, int32 * out_total_count)
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status_t GetAllOutputsFor(const media_node & node, media_output * out_outputs, int32 buf_num_outputs, int32 * out_total_count)
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GetFormatFor()
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status_t GetFormatFor(const media_output & output, media_format * io_format, uint32 flags = 0)
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status_t GetFormatFor(const media_input & input, media_format * io_format, uint32 flags = 0)
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status_t GetFormatFor(const media_node & node, media_format * io_format, float quality = B_MEDIA_ANY_QUALITY)
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NodeIDFor()
Use to find the media node associated with a given port.
GetInstancesFor()
BMediaTrack
Declared in: media/MediaTrack.h
ReadFrames()
New version of ReadFrames()
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status_t ReadFrames(void *out_buffer, int64 *out_frameCount, media_header *mh, media_decode_info *info);
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FindKeyFrameForTime()
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FindKeyFrameForFrame()
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status_t FindKeyFrameForTime(bigtime_t *inout_time, int32 flags=0) const;
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status_t FindKeyFrameForFrame(int64 *inout_frame, int32 flags=0) const;
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WriteFrames()
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status_t WriteFrames(const void *data, int64 num_frames, media_encode_info *info);
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status_t WriteFrames(const void *data, int64 num_frames, media_encode_info *info);
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GetEncodeParameters()
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GetEncodeParameters()
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status_t GetEncodeParameters(encode_parameters *parameters) const;
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status_t SetEncodeParameters(encode_parameters *parameters);
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BSoundPlayer
Declared in: media/SoundPlayer.h
BSoundPlayer()
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BSoundPlayer(const media_node & toNode, const media_multi_audio_format * format = NULL, const char * name = NULL, const media_input * input = NULL, void (*PlayBuffer)(void *, void * buffer, size_t size, const media_raw_audio_format & format) = NULL, void (*Notifier)(void *, sound_player_notification what, ...) = NULL, void * cookie = NULL)
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New constructor to support the new media_multi_audio_format type.
GetVolumeInfo()
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status_t GetVolumeInfo(media_node * out_node, int32 * out_parameter, float * out_min_dB, float * out_max_dB)
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SetVolumeDB()
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VolumeDB()
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float VolumeDB(bool forcePoll = false)
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void SetVolumeDB(float volume_dB)
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BTimedEventQueue
Declared in: media/TimedEventQueue.h
How many events in the queue?
Media Kit Miscellanea
suggestion_quality
Declared in: media/BufferProducer.h
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enum suggestion_quality {
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B_ANY_QUALITY = 0,
B_LOW_QUALITY = 10,
B_MEDIUM_QUALITY = 50,
B_HIGH_QUALITY = 100
};
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rtm_realloc
Declared in: media/RealtimeAlloc.h
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status_t rtm_realloc(void ** data, size_t new_size)
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New realtime memory reallocation function.
Constants and Types
Declared in: media/MediaDefs.h
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for BeOS Release 5.
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