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Decklink: autodetect input format

pull/18/head
Rafaël Carré 12 years ago
parent
5ec4f24271
commit
9df9c4cfda
1 changed files with 135 additions and 63 deletions
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  1. 198
      modules/access/decklink.cpp

198
modules/access/decklink.cpp
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@ -46,7 +46,7 @@ static void Close(vlc_object_t *);
"DeckLink capture card to use, if multiple exist. " \
"The cards are numbered from 0.")
#define MODE_TEXT N_("Desired input video mode")
#define MODE_TEXT N_("Desired input video mode. Leave empty for autodetection.")
#define MODE_LONGTEXT N_( \
"Desired input video mode for DeckLink captures. " \
"This value should be a FOURCC code in textual " \
@ -101,7 +101,7 @@ vlc_module_begin ()
add_integer("decklink-card-index", 0,
CARD_INDEX_TEXT, CARD_INDEX_LONGTEXT, true)
add_string("decklink-mode", "pal ",
add_string("decklink-mode", NULL,
MODE_TEXT, MODE_LONGTEXT, true)
add_string("decklink-audio-connection", 0,
AUDIO_CONNECTION_TEXT, AUDIO_CONNECTION_LONGTEXT, true)
@ -135,6 +135,9 @@ struct demux_sys_t
/* We need to hold onto the IDeckLinkConfiguration object, or our settings will not apply.
See section 2.4.15 of the Blackmagic Decklink SDK documentation. */
IDeckLinkConfiguration *config;
IDeckLinkAttributes *attributes;
bool autodetect;
es_out_id_t *video_es;
es_out_id_t *audio_es;
@ -149,6 +152,62 @@ struct demux_sys_t
bool tenbits;
};
static const char *GetFieldDominance(BMDFieldDominance dom, uint32_t *flags)
{
switch(dom)
{
case bmdProgressiveFrame:
return "";
case bmdProgressiveSegmentedFrame:
return ", segmented";
case bmdLowerFieldFirst:
*flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
return ", interlaced [BFF]";
case bmdUpperFieldFirst:
*flags = BLOCK_FLAG_TOP_FIELD_FIRST;
return ", interlaced [TFF]";
case bmdUnknownFieldDominance:
default:
return ", unknown field dominance";
}
}
static es_format_t GetModeSettings(demux_t *demux, IDeckLinkDisplayMode *m)
{
demux_sys_t *sys = demux->p_sys;
uint32_t flags = 0;
(void)GetFieldDominance(m->GetFieldDominance(), &flags);
BMDTimeValue frame_duration, time_scale;
if (m->GetFrameRate(&frame_duration, &time_scale) != S_OK) {
time_scale = 0;
frame_duration = 1;
}
es_format_t video_fmt;
vlc_fourcc_t chroma; chroma = sys->tenbits ? VLC_CODEC_I422_10L : VLC_CODEC_UYVY;
es_format_Init(&video_fmt, VIDEO_ES, chroma);
video_fmt.video.i_width = m->GetWidth();
video_fmt.video.i_height = m->GetHeight();
video_fmt.video.i_sar_num = 1;
video_fmt.video.i_sar_den = 1;
video_fmt.video.i_frame_rate = time_scale;
video_fmt.video.i_frame_rate_base = frame_duration;
video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2 * 8;
unsigned aspect_num, aspect_den;
if (!var_InheritURational(demux, &aspect_num, &aspect_den, "decklink-aspect-ratio") &&
aspect_num > 0 && aspect_den > 0) {
video_fmt.video.i_sar_num = aspect_num * video_fmt.video.i_height;
video_fmt.video.i_sar_den = aspect_den * video_fmt.video.i_width;
}
sys->dominance_flags = flags;
return video_fmt;
}
class DeckLinkCaptureDelegate : public IDeckLinkInputCallback
{
public:
@ -172,9 +231,33 @@ public:
return new_ref;
}
virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents, IDeckLinkDisplayMode*, BMDDetectedVideoInputFormatFlags)
virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents events, IDeckLinkDisplayMode *mode, BMDDetectedVideoInputFormatFlags)
{
msg_Dbg(demux_, "Video input format changed");
demux_sys_t *sys = demux_->p_sys;
if( !(events & bmdVideoInputDisplayModeChanged ))
return S_OK;
const char *mode_name;
if (mode->GetName(&mode_name) != S_OK)
mode_name = "unknown";
msg_Dbg(demux_, "Video input format changed to %s", mode_name);
if (!sys->autodetect) {
msg_Err(demux_, "Video format detection disabled");
return S_OK;
}
es_out_Del(demux_->out, sys->video_es);
es_format_t video_fmt = GetModeSettings(demux_, mode);
sys->video_es = es_out_Add(demux_->out, &video_fmt);
BMDPixelFormat fmt = sys->tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
sys->input->PauseStreams();
sys->input->EnableVideoInput( mode->GetDisplayMode(), fmt, bmdVideoInputEnableFormatDetection );
sys->input->FlushStreams();
sys->input->StartStreams();
return S_OK;
}
@ -491,36 +574,15 @@ static int GetVideoConn(demux_t *demux)
return VLC_SUCCESS;
}
static const char *GetFieldDominance(BMDFieldDominance dom, uint32_t *flags)
{
switch(dom)
{
case bmdProgressiveFrame:
return "";
case bmdProgressiveSegmentedFrame:
return ", segmented";
case bmdLowerFieldFirst:
*flags = BLOCK_FLAG_BOTTOM_FIELD_FIRST;
return ", interlaced [BFF]";
case bmdUpperFieldFirst:
*flags = BLOCK_FLAG_TOP_FIELD_FIRST;
return ", interlaced [TFF]";
case bmdUnknownFieldDominance:
default:
return ", unknown field dominance";
}
}
static int Open(vlc_object_t *p_this)
{
demux_t *demux = (demux_t*)p_this;
demux_sys_t *sys;
int ret = VLC_EGENERIC;
int card_index;
int width = 0, height, fps_num, fps_den;
int physical_channels = 0;
int rate;
unsigned aspect_num, aspect_den;
BMDVideoInputFlags flags = bmdVideoInputFlagDefault;
/* Only when selected */
if (*demux->psz_access == '\0')
@ -578,13 +640,18 @@ static int Open(vlc_object_t *p_this)
goto finish;
}
if (sys->card->QueryInterface(IID_IDeckLinkAttributes, (void**)&sys->attributes) != S_OK) {
msg_Err(demux, "Failed to get attributes interface");
goto finish;
}
if (GetVideoConn(demux) || GetAudioConn(demux))
goto finish;
char *mode;
mode = var_CreateGetNonEmptyString(demux, "decklink-mode");
if (!mode || strlen(mode) < 3 || strlen(mode) > 4) {
msg_Err(demux, "Invalid mode: `%s\'", mode ? mode : "");
BMDPixelFormat fmt;
fmt = sys->tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
if (sys->attributes->GetFlag(BMDDeckLinkSupportsInputFormatDetection, &sys->autodetect) != S_OK) {
msg_Err(demux, "Failed to query card attribute");
goto finish;
}
@ -592,7 +659,6 @@ static int Open(vlc_object_t *p_this)
IDeckLinkDisplayModeIterator *mode_it;
if (sys->input->GetDisplayModeIterator(&mode_it) != S_OK) {
msg_Err(demux, "Failed to enumerate display modes");
free(mode);
goto finish;
}
@ -600,10 +666,35 @@ static int Open(vlc_object_t *p_this)
BMDDisplayMode id;
char str[4];
} u;
memcpy(u.str, mode, 4);
if (u.str[3] == '\0')
u.str[3] = ' '; /* 'pal'\0 -> 'pal ' */
free(mode);
u.id = 0;
char *mode;
mode = var_CreateGetNonEmptyString(demux, "decklink-mode");
if (mode)
sys->autodetect = false; // disable autodetection if mode was set
if (sys->autodetect) {
msg_Dbg(demux, "Card supports input format detection");
flags |= bmdVideoInputEnableFormatDetection;
/* Enable a random format, we will reconfigure on format detection */
u.id = htonl(bmdModeHD1080p2997);
} else {
if (!mode || strlen(mode) < 3 || strlen(mode) > 4) {
msg_Err(demux, "Invalid mode: \'%s\'", mode ? mode : "");
free(mode);
goto finish;
}
msg_Dbg(demux, "Looking for mode \'%s\'", mode);
memcpy(u.str, mode, 4);
if (u.str[3] == '\0')
u.str[3] = ' '; /* 'pal'\0 -> 'pal ' */
free(mode);
}
es_format_t video_fmt;
video_fmt.video.i_width = 0;
for (IDeckLinkDisplayMode *m;; m->Release()) {
if ((mode_it->Next(&m) != S_OK) || !m)
@ -611,8 +702,8 @@ static int Open(vlc_object_t *p_this)
const char *mode_name;
BMDTimeValue frame_duration, time_scale;
uint32_t flags = 0;
const char *field = GetFieldDominance(m->GetFieldDominance(), &flags);
uint32_t field_flags;
const char *field = GetFieldDominance(m->GetFieldDominance(), &field_flags);
BMDDisplayMode id = ntohl(m->GetDisplayMode());
if (m->GetName(&mode_name) != S_OK)
@ -628,23 +719,19 @@ static int Open(vlc_object_t *p_this)
double(time_scale) / frame_duration, field);
if (u.id == id) {
width = m->GetWidth();
height = m->GetHeight();
fps_num = time_scale;
fps_den = frame_duration;
sys->dominance_flags = flags;
video_fmt = GetModeSettings(demux, m);
msg_Dbg(demux, "Using that mode");
}
}
mode_it->Release();
if (width == 0) {
if (video_fmt.video.i_width == 0) {
msg_Err(demux, "Unknown video mode `%4.4s\' specified.", (char*)&u.id);
goto finish;
}
BMDPixelFormat fmt; fmt = sys->tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
if (sys->input->EnableVideoInput(htonl(u.id), fmt, 0) != S_OK) {
if (sys->input->EnableVideoInput(htonl(u.id), fmt, flags) != S_OK) {
msg_Err(demux, "Failed to enable video input");
goto finish;
}
@ -682,24 +769,6 @@ static int Open(vlc_object_t *p_this)
goto finish;
}
/* Declare elementary streams */
es_format_t video_fmt;
vlc_fourcc_t chroma; chroma = sys->tenbits ? VLC_CODEC_I422_10L : VLC_CODEC_UYVY;
es_format_Init(&video_fmt, VIDEO_ES, chroma);
video_fmt.video.i_width = width;
video_fmt.video.i_height = height;
video_fmt.video.i_sar_num = 1;
video_fmt.video.i_sar_den = 1;
video_fmt.video.i_frame_rate = fps_num;
video_fmt.video.i_frame_rate_base = fps_den;
video_fmt.i_bitrate = video_fmt.video.i_width * video_fmt.video.i_height * video_fmt.video.i_frame_rate * 2 * 8;
if (!var_InheritURational(demux, &aspect_num, &aspect_den, "decklink-aspect-ratio") &&
aspect_num > 0 && aspect_den > 0) {
video_fmt.video.i_sar_num = aspect_num * video_fmt.video.i_height;
video_fmt.video.i_sar_den = aspect_den * video_fmt.video.i_width;
}
msg_Dbg(demux, "added new video es %4.4s %dx%d",
(char*)&video_fmt.i_codec, video_fmt.video.i_width, video_fmt.video.i_height);
sys->video_es = es_out_Add(demux->out, &video_fmt);
@ -734,6 +803,9 @@ static void Close(vlc_object_t *p_this)
demux_t *demux = (demux_t *)p_this;
demux_sys_t *sys = demux->p_sys;
if (sys->attributes)
sys->attributes->Release();
if (sys->config)
sys->config->Release();

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