-
-
Notifications
You must be signed in to change notification settings - Fork 346
/
VideoNode.cpp
439 lines (357 loc) · 9.33 KB
/
VideoNode.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
/*
* Copyright (C) 2006 Marcus Overhagen <marcus@overhagen.de>. All rights reserved.
* Copyright (C) 2008 Maurice Kalinowski <haiku@kaldience.com>. All rights reserved.
*
* Distributed under the terms of the MIT License.
*/
#include "VideoNode.h"
#include "VideoView.h"
#include "VideoWindow.h"
#include <Bitmap.h>
#include <Buffer.h>
#include <BufferGroup.h>
#include <Debug.h>
#include <MediaRoster.h>
#include <Locker.h>
#include <TimeSource.h>
#include <Window.h>
#include <stdio.h>
#include <string.h>
VideoNode::VideoNode(const char *name)
: BMediaNode(name)
, BMediaEventLooper()
, BBufferConsumer(B_MEDIA_RAW_VIDEO)
, fWindow(0)
, fVideoView(0)
, fInput()
, fOverlayEnabled(true)
, fOverlayActive(false)
, fDirectOverlayBuffer(false)
, fBitmap(0)
, fBitmapLocker(new BLocker("Video Node Locker"))
, fAddOn(0)
, fInternalFlavorId(0)
{
_InitDisplay();
}
VideoNode::VideoNode(const char *name, BMediaAddOn* addon, int32 id)
: BMediaNode(name)
, BMediaEventLooper()
, BBufferConsumer(B_MEDIA_RAW_VIDEO)
, fWindow(0)
, fVideoView(0)
, fInput()
, fOverlayEnabled(true)
, fOverlayActive(false)
, fDirectOverlayBuffer(false)
, fBitmap(0)
, fBitmapLocker(new BLocker("Video Node Locker"))
, fAddOn(addon)
, fInternalFlavorId(id)
{
_InitDisplay();
}
VideoNode::~VideoNode()
{
Quit();
DeleteBuffers();
delete fBitmapLocker;
if (fWindow && fWindow->Lock())
fWindow->Quit();
}
BMediaAddOn *
VideoNode::AddOn(int32 *internal_id) const
{
*internal_id = fInternalFlavorId;
return fAddOn;
}
void
VideoNode::NodeRegistered()
{
fInput.node = Node();
fInput.source = media_source::null;
fInput.destination.port = ControlPort();
fInput.destination.id = 0;
fInput.format.type = B_MEDIA_RAW_VIDEO;
fInput.format.u.raw_video = media_raw_video_format::wildcard;
strcpy(fInput.name, "video in");
SetPriority(B_DISPLAY_PRIORITY);
Run();
}
void
VideoNode::BufferReceived(BBuffer * buffer)
{
if (RunState() != B_STARTED) {
buffer->Recycle();
return;
}
if (fOverlayActive && fDirectOverlayBuffer) {
HandleBuffer(buffer);
} else {
media_timed_event event(buffer->Header()->start_time,
BTimedEventQueue::B_HANDLE_BUFFER, buffer,
BTimedEventQueue::B_RECYCLE_BUFFER);
EventQueue()->AddEvent(event);
}
}
status_t
VideoNode::GetNextInput(int32 *cookie, media_input *out_input)
{
if (*cookie < 1) {
*out_input = fInput;
*cookie += 1;
return B_OK;
}
return B_ERROR;
}
void
VideoNode::DisposeInputCookie(int32 cookie)
{
// nothing to do
}
status_t
VideoNode:: HandleMessage(int32 message, const void *data, size_t size)
{
return B_ERROR;
}
void
VideoNode::HandleEvent(const media_timed_event *event, bigtime_t lateness,
bool realTimeEvent)
{
switch (event->type) {
case BTimedEventQueue::B_START:
break;
case BTimedEventQueue::B_STOP:
EventQueue()->FlushEvents(event->event_time,
BTimedEventQueue::B_ALWAYS, true,
BTimedEventQueue::B_HANDLE_BUFFER);
break;
case BTimedEventQueue::B_HANDLE_BUFFER:
HandleBuffer((BBuffer *)event->pointer);
break;
case BTimedEventQueue::B_SEEK:
fprintf(stderr, "VideoNode::HandleEvent Seek event not handled\n");
break;
default:
fprintf(stderr, "VideoNode::HandleEvent unknown event\n");
break;
}
}
void
VideoNode::ProducerDataStatus(const media_destination &dst, int32 status,
bigtime_t at_media_time)
{
// do nothing
}
status_t
VideoNode::GetLatencyFor(const media_destination &dst, bigtime_t *out_latency,
media_node_id *out_id)
{
if (dst != fInput.destination)
return B_MEDIA_BAD_DESTINATION;
*out_latency = 10000;
*out_id = TimeSource()->ID();
return B_OK;
}
status_t
VideoNode::AcceptFormat(const media_destination &dst, media_format *format)
{
/* The connection process:
* BBufferProducer::FormatProposal
* we are here => BBufferConsumer::AcceptFormat
* BBufferProducer::PrepareToConnect
* BBufferConsumer::Connected
* BBufferProducer::Connect
*/
if (dst != fInput.destination)
return B_MEDIA_BAD_DESTINATION;
if (format->type == B_MEDIA_NO_TYPE)
format->type = B_MEDIA_RAW_VIDEO;
if (format->type != B_MEDIA_RAW_VIDEO)
return B_MEDIA_BAD_FORMAT;
return B_OK;
}
status_t
VideoNode::Connected(const media_source &src, const media_destination &dst,
const media_format &format, media_input *out_input)
{
/* The connection process:
* BBufferProducer::FormatProposal
* BBufferConsumer::AcceptFormat
* BBufferProducer::PrepareToConnect
* we are here => BBufferConsumer::Connected
* BBufferProducer::Connect
*/
if (dst != fInput.destination)
return B_MEDIA_BAD_DESTINATION;
fInput.source = src;
fInput.format = format;
if (fInput.format.u.raw_video.field_rate < 1.0)
fInput.format.u.raw_video.field_rate = 25.0;
// In order to display video we need to create a buffer that is either
// in the overlay colorspace B_YCbCr422
// or the requested colorspace if not B_YCbCr422
// and we need to tell the node upstream of our choice
BRect frame(0, 0, format.u.raw_video.display.line_width - 1,
format.u.raw_video.display.line_count - 1);
DeleteBuffers();
status_t err;
if (format.u.raw_video.display.format == B_NO_COLOR_SPACE) {
// upstream node is leaving it up to us so we try overlay then
// B_RGBA32 (We probably should try what format the screen is)
err = CreateBuffers(frame, B_YCbCr422, true);
SetOverlayEnabled(err == B_OK);
if (!fOverlayEnabled) {
// no overlay available so fall back to RGBA32
err = CreateBuffers(frame, B_RGBA32, false);
}
} else if (format.u.raw_video.display.format == B_YCbCr422) {
// upstream node is likely requesting overlay
err = CreateBuffers(frame, B_YCbCr422, true);
SetOverlayEnabled(err == B_OK);
// if we cannot give them what they want then return error
} else {
// upstream node is requesting some other format
SetOverlayEnabled(false);
err = CreateBuffers(frame, format.u.raw_video.display.format,
fOverlayEnabled);
}
if (err) {
fprintf(stderr, "VideoNode::Connected failed, fOverlayEnabled = %d\n",
fOverlayEnabled);
return err;
} else {
fInput.format.u.raw_video.display.format = fBitmap->ColorSpace();
}
*out_input = fInput;
return B_OK;
}
void
VideoNode::Disconnected(const media_source &src, const media_destination &dst)
{
if (src != fInput.source)
return;
if (dst != fInput.destination)
return;
DeleteBuffers();
// disconnect the connection
fInput.source = media_source::null;
}
status_t
VideoNode::FormatChanged(const media_source &src, const media_destination &dst,
int32 from_change_count, const media_format &format)
{
if (src != fInput.source)
return B_MEDIA_BAD_SOURCE;
if (dst != fInput.destination)
return B_MEDIA_BAD_DESTINATION;
color_space colorspace = format.u.raw_video.display.format;
BRect frame(0, 0, format.u.raw_video.display.line_width - 1,
format.u.raw_video.display.line_count - 1);
status_t err;
DeleteBuffers();
if (fOverlayEnabled) {
fVideoView->RemoveOverlay();
err = CreateBuffers(frame, colorspace, true); // try overlay
if (err) {
fprintf(stderr, "VideoNode::FormatChanged creating overlay buffer failed\n");
err = CreateBuffers(frame, colorspace, false); // no overlay
}
} else {
err = CreateBuffers(frame, colorspace, false); // no overlay
}
if (err) {
fprintf(stderr, "VideoNode::FormatChanged failed (lost buffer group!)\n");
return B_MEDIA_BAD_FORMAT;
}
fInput.format = format;
return B_OK;
}
void
VideoNode::HandleBuffer(BBuffer *buffer)
{
LockBitmap();
if (fBitmap && fWindow && fVideoView) {
// bigtime_t start = system_time();
if (fOverlayActive) {
if (B_OK == fBitmap->LockBits()) {
memcpy(fBitmap->Bits(), buffer->Data(), fBitmap->BitsLength());
fBitmap->UnlockBits();
}
} else {
memcpy(fBitmap->Bits(), buffer->Data(), fBitmap->BitsLength());
}
// printf("overlay copy: %lld usec\n", system_time() - start);
}
UnlockBitmap();
buffer->Recycle();
fVideoView->DrawFrame();
}
void
VideoNode::SetOverlayEnabled(bool yesno)
{
fOverlayEnabled = yesno;
}
void
VideoNode::LockBitmap()
{
fBitmapLocker->Lock();
}
BBitmap *
VideoNode::Bitmap()
{
return fBitmap;
}
void
VideoNode::UnlockBitmap()
{
fBitmapLocker->Unlock();
}
bool
VideoNode::IsOverlayActive()
{
return fOverlayActive;
}
status_t
VideoNode::CreateBuffers(BRect frame, color_space cspace, bool overlay)
{
printf("VideoNode::CreateBuffers: frame %d,%d,%d,%d colorspace 0x%08x, "
"overlay %d\n", int(frame.left), int(frame.top), int(frame.right),
int(frame.bottom), int(cspace), overlay);
LockBitmap();
ASSERT(fBitmap == 0);
uint32 flags = 0;
if (overlay)
flags = B_BITMAP_WILL_OVERLAY | B_BITMAP_RESERVE_OVERLAY_CHANNEL;
fBitmap = new BBitmap(frame, flags, cspace);
if (!(fBitmap && fBitmap->InitCheck() == B_OK && fBitmap->IsValid())) {
delete fBitmap;
fBitmap = NULL;
fOverlayActive = false;
UnlockBitmap();
fprintf(stderr, "VideoNode::CreateBuffers failed\n");
return B_MEDIA_BAD_FORMAT;
}
fOverlayActive = overlay;
UnlockBitmap();
return B_OK;
}
void
VideoNode::DeleteBuffers()
{
LockBitmap();
delete fBitmap;
fBitmap = NULL;
UnlockBitmap();
}
void
VideoNode::_InitDisplay()
{
// TODO: Get rid of hardcoded values
BRect size(0,0,320,240);
fVideoView = new VideoView(size, "Video View", B_FOLLOW_ALL_SIDES,
B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE, this);
size.OffsetBy(40.f, 40.f);
fWindow = new VideoWindow(size, fVideoView);
fWindow->Show();
}