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DeckLink: added 'fast' parameter

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This commit is contained in:
Martin Pulec
2012-07-27 12:34:39 +02:00
parent d8f0a7a5b1
commit 8c3adf855a
1 changed files with 48 additions and 8 deletions
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56
src/video_display/decklink.cpp
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@@ -243,9 +243,15 @@ struct state_decklink {
unsigned int play_audio:1;
int output_audio_channel_count;
BMDPixelFormat pixelFormat;
BMDPixelFormat pixelFormat;
enum link link;
/*
* Fast mode means partially incorrect moder when there are data
* continually written to same video frame instaed to separate ones.
*/
bool fast;
};
static void show_help(void);
@@ -258,7 +264,8 @@ static void show_help(void)
HRESULT result;
printf("Decklink (output) options:\n");
printf("\t-d decklink:<device_number(s)>[:timecode][:3G|:dual-link][:3D[:HDMI3DPacking=<packing>]] - coma-separated numbers of output devices\n");
printf("\t-d decklink:<device_number(s)>[:timecode][:3G|:dual-link][:3D[:HDMI3DPacking=<packing>]][:fast]\n");
printf("\t\tcoma-separated numbers of output devices\n");
// Create an IDeckLinkIterator object to enumerate all DeckLink cards in the system
deckLinkIterator = CreateDeckLinkIteratorInstance();
if (deckLinkIterator == NULL)
@@ -316,6 +323,10 @@ static void show_help(void)
printf("\tFramePacking\n");
printf("\tLeftOnly\n");
printf("\tRightOnly\n");
printf("\n");
printf("Fast mode has lower latency at the expense of incorrect displaying (frame rewriting).\n");
printf("\n");
}
@@ -330,8 +341,10 @@ display_decklink_getf(void *state)
if(s->stereo) {
IDeckLinkVideoFrame *deckLinkFrameRight;
assert(s->devices_cnt == 1);
s->state[0].deckLinkFrame = DeckLink3DFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
if(!s->fast) {
s->state[0].deckLinkFrame = DeckLink3DFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
s->frame->tiles[0].linesize, s->pixelFormat);
}
s->state[0].deckLinkFrame->GetBytes((void **) &s->frame->tiles[0].data);
@@ -341,8 +354,10 @@ display_decklink_getf(void *state)
deckLinkFrameRight->Release();
} else {
for(int i = 0; i < s->devices_cnt; ++i) {
s->state[i].deckLinkFrame = DeckLinkFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
s->frame->tiles[0].linesize, s->pixelFormat);
if(!s->fast) {
s->state[i].deckLinkFrame = DeckLinkFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
s->frame->tiles[0].linesize, s->pixelFormat);
}
s->state[i].deckLinkFrame->GetBytes((void **) &s->frame->tiles[i].data);
}
@@ -420,13 +435,17 @@ int display_decklink_putf(void *state, char *frame)
#ifdef DECKLINK_LOW_LATENCY
s->state[j].deckLinkOutput->DisplayVideoFrameSync(s->state[j].deckLinkFrame);
s->state[j].deckLinkFrame->Release();
if(!s->fast) {
s->state[j].deckLinkFrame->Release();
}
#else
s->state[j].deckLinkOutput->ScheduleVideoFrame(s->state[j].deckLinkFrame,
s->frames * s->frameRateDuration, s->frameRateDuration, s->frameRateScale);
#endif /* DECKLINK_LOW_LATENCY */
s->state[j].deckLinkFrame = NULL;
if(!s->fast) {
s->state[j].deckLinkFrame = NULL;
}
}
s->frames++;
if(s->emit_timecode) {
@@ -560,6 +579,13 @@ display_decklink_reconfigure(void *state, struct video_desc desc)
goto error;
}
if(s->fast) {
if(s->state[0].deckLinkFrame) {
s->state[0].deckLinkFrame->Release();
}
s->state[0].deckLinkFrame = DeckLink3DFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
s->frame->tiles[0].linesize, s->pixelFormat);
}
s->state[0].deckLinkOutput->EnableVideoOutput(displayMode, bmdVideoOutputDualStream3D);
#ifndef DECKLINK_LOW_LATENCY
@@ -600,6 +626,14 @@ display_decklink_reconfigure(void *state, struct video_desc desc)
(outputFlags & bmdVideoOutputRP188 ? "ON": "OFF"));
goto error;
}
if(s->fast) {
if(s->state[i].deckLinkFrame) {
s->state[i].deckLinkFrame->Release();
}
s->state[i].deckLinkFrame = DeckLinkFrame::Create(s->frame->tiles[0].width, s->frame->tiles[0].height,
s->frame->tiles[0].linesize, s->pixelFormat);
}
s->state[i].deckLinkOutput->EnableVideoOutput(displayMode, outputFlags);
}
@@ -690,6 +724,8 @@ void *display_decklink_init(char *fmt, unsigned int flags)
s->stereo = FALSE;
s->emit_timecode = false;
s->link = LINK_UNSPECIFIED;
s->fast = false;
if(fmt == NULL) {
cardIdx[0] = 0;
@@ -740,6 +776,8 @@ void *display_decklink_init(char *fmt, unsigned int flags)
} else {
fprintf(stderr, "[DeckLink] Warning: HDMI 3D packing %s.\n", packing);
}
} else if(strcasecmp(ptr, "fast") == 0) {
s->fast = true;
} else {
fprintf(stderr, "[DeckLink] Warning: unknown options in config string.\n");
}
@@ -902,7 +940,9 @@ void *display_decklink_init(char *fmt, unsigned int flags)
s->state[i].delegate = new PlaybackDelegate(s, i);
// Provide this class as a delegate to the audio and video output interfaces
#ifndef DECKLINK_LOW_LATENCY
s->state[i].deckLinkOutput->SetScheduledFrameCompletionCallback(s->state[i].delegate);
if(!s->fast) {
s->state[i].deckLinkOutput->SetScheduledFrameCompletionCallback(s->state[i].delegate);
}
#endif /* ! defined DECKLINK_LOW_LATENCY */
//s->state[i].deckLinkOutput->DisableAudioOutput();
}