209 lines
6.8 KiB
C
209 lines
6.8 KiB
C
|
/*******************************************************************************
|
||
|
|
/
|
||
|
|
/ File: BufferConsumer.h
|
||
|
|
/
|
||
|
|
/ Description: A BBufferConsumer is anything that wants to receive buffers in the Media Kit
|
||
|
|
/
|
||
|
|
/ Copyright 1997-98, Be Incorporated, All Rights Reserved
|
||
|
|
/
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
#if !defined(_BUFFER_CONSUMER_H)
|
||
|
|
#define _BUFFER_CONSUMER_H
|
||
|
|
|
||
|
|
#include <MediaDefs.h>
|
||
|
|
#include <MediaNode.h>
|
||
|
|
|
||
|
|
namespace BPrivate { namespace media {
|
||
|
|
class BMediaRosterEx;
|
||
|
|
}}
|
||
|
|
|
||
|
|
class _buffer_id_cache;
|
||
|
|
|
||
|
|
class BBufferConsumer :
|
||
|
|
public virtual BMediaNode
|
||
|
|
{
|
||
|
|
protected:
|
||
|
|
/* this has to be at the top to force a vtable */
|
||
|
|
virtual ~BBufferConsumer();
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
media_type ConsumerType();
|
||
|
|
|
||
|
|
/* for encoding a region into the format needed for clipping requests */
|
||
|
|
static status_t RegionToClipData(
|
||
|
|
const BRegion * region,
|
||
|
|
int32 * format,
|
||
|
|
int32 * ioSize,
|
||
|
|
void * data);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
explicit BBufferConsumer(
|
||
|
|
media_type consumer_type /* = B_MEDIA_UNKNOWN_TYPE */);
|
||
|
|
|
||
|
|
static void NotifyLateProducer(
|
||
|
|
const media_source & what_source,
|
||
|
|
bigtime_t how_much,
|
||
|
|
bigtime_t performance_time);
|
||
|
|
status_t SetVideoClippingFor(
|
||
|
|
const media_source & output,
|
||
|
|
const media_destination & destination,
|
||
|
|
const int16 * shorts,
|
||
|
|
int32 short_count,
|
||
|
|
const media_video_display_info & display,
|
||
|
|
void * user_data,
|
||
|
|
int32 * change_tag,
|
||
|
|
void * _reserved_ = 0); // change_tag value will be passed to RequestCompleted()
|
||
|
|
status_t SetOutputEnabled(
|
||
|
|
const media_source & source,
|
||
|
|
const media_destination & destination,
|
||
|
|
bool enabled,
|
||
|
|
void * user_data,
|
||
|
|
int32 * change_tag,
|
||
|
|
void * _reserved_ = 0); // change_tag value will be passed to RequestCompleted()
|
||
|
|
status_t RequestFormatChange(
|
||
|
|
const media_source & source,
|
||
|
|
const media_destination & destination,
|
||
|
|
const media_format & to_format,
|
||
|
|
void * user_data,
|
||
|
|
int32 * change_tag,
|
||
|
|
void * _reserved_ = 0); // change_tag value will be passed to RequestCompleted()
|
||
|
|
status_t RequestAdditionalBuffer( // new in 4.1
|
||
|
|
const media_source & source,
|
||
|
|
BBuffer * prev_buffer,
|
||
|
|
void * _reserved = NULL);
|
||
|
|
status_t RequestAdditionalBuffer( // new in 4.1
|
||
|
|
const media_source & source,
|
||
|
|
bigtime_t start_time,
|
||
|
|
void * _reserved = NULL);
|
||
|
|
status_t SetOutputBuffersFor( // new in 4.1
|
||
|
|
const media_source & source,
|
||
|
|
const media_destination & destination,
|
||
|
|
BBufferGroup * group,
|
||
|
|
void * user_data,
|
||
|
|
int32 * change_tag, // passed to RequestCompleted()
|
||
|
|
bool will_reclaim = false,
|
||
|
|
void * _reserved_ = 0);
|
||
|
|
status_t SendLatencyChange(
|
||
|
|
const media_source & source,
|
||
|
|
const media_destination & destination,
|
||
|
|
bigtime_t my_new_latency,
|
||
|
|
uint32 flags = 0);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
|
||
|
|
virtual status_t HandleMessage(
|
||
|
|
int32 message,
|
||
|
|
const void * data,
|
||
|
|
size_t size);
|
||
|
|
|
||
|
|
/* Someone, probably the producer, is asking you about this format. Give */
|
||
|
|
/* your honest opinion, possibly modifying *format. Do not ask upstream */
|
||
|
|
/* producer about the format, since he's synchronously waiting for your */
|
||
|
|
/* reply. */
|
||
|
|
virtual status_t AcceptFormat(
|
||
|
|
const media_destination & dest,
|
||
|
|
media_format * ioFormat) = 0;
|
||
|
|
virtual status_t GetNextInput(
|
||
|
|
int32 * cookie,
|
||
|
|
media_input * out_input) = 0;
|
||
|
|
virtual void DisposeInputCookie(
|
||
|
|
int32 cookie) = 0;
|
||
|
|
virtual void BufferReceived(
|
||
|
|
BBuffer * buffer) = 0;
|
||
|
|
virtual void ProducerDataStatus(
|
||
|
|
const media_destination & for_whom,
|
||
|
|
int32 status,
|
||
|
|
bigtime_t at_performance_time) = 0;
|
||
|
|
virtual status_t GetLatencyFor(
|
||
|
|
const media_destination & for_whom,
|
||
|
|
bigtime_t * out_latency,
|
||
|
|
media_node_id * out_timesource) = 0;
|
||
|
|
virtual status_t Connected(
|
||
|
|
const media_source & producer, /* here's a good place to request buffer group usage */
|
||
|
|
const media_destination & where,
|
||
|
|
const media_format & with_format,
|
||
|
|
media_input * out_input) = 0;
|
||
|
|
virtual void Disconnected(
|
||
|
|
const media_source & producer,
|
||
|
|
const media_destination & where) = 0;
|
||
|
|
/* The notification comes from the upstream producer, so he's already cool with */
|
||
|
|
/* the format; you should not ask him about it in here. */
|
||
|
|
virtual status_t FormatChanged(
|
||
|
|
const media_source & producer,
|
||
|
|
const media_destination & consumer,
|
||
|
|
int32 change_tag,
|
||
|
|
const media_format & format) = 0;
|
||
|
|
|
||
|
|
/* Given a performance time of some previous buffer, retrieve the remembered tag */
|
||
|
|
/* of the closest (previous or exact) performance time. Set *out_flags to 0; the */
|
||
|
|
/* idea being that flags can be added later, and the understood flags returned in */
|
||
|
|
/* *out_flags. */
|
||
|
|
virtual status_t SeekTagRequested(
|
||
|
|
const media_destination & destination,
|
||
|
|
bigtime_t in_target_time,
|
||
|
|
uint32 in_flags,
|
||
|
|
media_seek_tag * out_seek_tag,
|
||
|
|
bigtime_t * out_tagged_time,
|
||
|
|
uint32 * out_flags);
|
||
|
|
|
||
|
|
private:
|
||
|
|
|
||
|
|
BBufferConsumer(); /* private unimplemented */
|
||
|
|
BBufferConsumer(
|
||
|
|
const BBufferConsumer & clone);
|
||
|
|
BBufferConsumer & operator=(
|
||
|
|
const BBufferConsumer & clone);
|
||
|
|
|
||
|
|
// these functions are deprecated from the 4.0 API
|
||
|
|
static status_t SetVideoClippingFor(
|
||
|
|
const media_source & output,
|
||
|
|
const int16 * shorts,
|
||
|
|
int32 short_count,
|
||
|
|
const media_video_display_info & display,
|
||
|
|
int32 * change_tag); // change_tag value will be passed to RequestCompleted()
|
||
|
|
static status_t RequestFormatChange(
|
||
|
|
const media_source & source,
|
||
|
|
const media_destination & destination,
|
||
|
|
media_format * io_to_format, // the "o" part is unused from 4.1
|
||
|
|
int32 * change_tag); // change_tag value will be passed to RequestCompleted()
|
||
|
|
static status_t SetOutputEnabled(
|
||
|
|
const media_source & source,
|
||
|
|
bool enabled,
|
||
|
|
int32 * change_tag); // change_tag value will be passed to RequestCompleted()
|
||
|
|
|
||
|
|
/* Mmmh, stuffing! */
|
||
|
|
status_t _Reserved_BufferConsumer_0(void *); /* SeekTagRequested */
|
||
|
|
virtual status_t _Reserved_BufferConsumer_1(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_2(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_3(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_4(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_5(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_6(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_7(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_8(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_9(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_10(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_11(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_12(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_13(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_14(void *);
|
||
|
|
virtual status_t _Reserved_BufferConsumer_15(void *);
|
||
|
|
|
||
|
|
friend class BMediaNode;
|
||
|
|
friend class BBufferProducer;
|
||
|
|
friend class BMediaRoster;
|
||
|
|
friend class BPrivate::media::BMediaRosterEx;
|
||
|
|
|
||
|
|
media_type fConsumerType;
|
||
|
|
_buffer_id_cache * fBufferCache;
|
||
|
|
BBufferGroup *fDeleteBufferGroup;
|
||
|
|
uint32 _reserved_buffer_consumer_[14];
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* _BUFFER_CONSUMER_H */
|
||
|
|
|