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gstreamer/sys/decklink/gstdecklink.cpp
Tim-Philipp Müller 2a40ab6ad6 decklink: don't crash if there are no decklink devices 
Fixes generic/states check.
2018-01-23 14:49:51 +00:00

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/* GStreamer
* Copyright (C) 2011 David Schleef <ds@schleef.org>
* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
* Copyright (C) 2015 Florian Langlois <florian.langlois@fr.thalesgroup.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstdecklink.h"
#include "gstdecklinkaudiosink.h"
#include "gstdecklinkvideosink.h"
#include "gstdecklinkaudiosrc.h"
#include "gstdecklinkvideosrc.h"
GST_DEBUG_CATEGORY_STATIC (gst_decklink_debug);
#define GST_CAT_DEFAULT gst_decklink_debug
GType
gst_decklink_mode_get_type (void)
{
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_DECKLINK_MODE_AUTO, "Automatic detection", "auto"},
{GST_DECKLINK_MODE_NTSC, "NTSC SD 60i", "ntsc"},
{GST_DECKLINK_MODE_NTSC2398, "NTSC SD 60i (24 fps)", "ntsc2398"},
{GST_DECKLINK_MODE_PAL, "PAL SD 50i", "pal"},
{GST_DECKLINK_MODE_NTSC_P, "NTSC SD 60p", "ntsc-p"},
{GST_DECKLINK_MODE_PAL_P, "PAL SD 50p", "pal-p"},
{GST_DECKLINK_MODE_1080p2398, "HD1080 23.98p", "1080p2398"},
{GST_DECKLINK_MODE_1080p24, "HD1080 24p", "1080p24"},
{GST_DECKLINK_MODE_1080p25, "HD1080 25p", "1080p25"},
{GST_DECKLINK_MODE_1080p2997, "HD1080 29.97p", "1080p2997"},
{GST_DECKLINK_MODE_1080p30, "HD1080 30p", "1080p30"},
{GST_DECKLINK_MODE_1080i50, "HD1080 50i", "1080i50"},
{GST_DECKLINK_MODE_1080i5994, "HD1080 59.94i", "1080i5994"},
{GST_DECKLINK_MODE_1080i60, "HD1080 60i", "1080i60"},
{GST_DECKLINK_MODE_1080p50, "HD1080 50p", "1080p50"},
{GST_DECKLINK_MODE_1080p5994, "HD1080 59.94p", "1080p5994"},
{GST_DECKLINK_MODE_1080p60, "HD1080 60p", "1080p60"},
{GST_DECKLINK_MODE_720p50, "HD720 50p", "720p50"},
{GST_DECKLINK_MODE_720p5994, "HD720 59.94p", "720p5994"},
{GST_DECKLINK_MODE_720p60, "HD720 60p", "720p60"},
{GST_DECKLINK_MODE_1556p2398, "2k 23.98p", "1556p2398"},
{GST_DECKLINK_MODE_1556p24, "2k 24p", "1556p24"},
{GST_DECKLINK_MODE_1556p25, "2k 25p", "1556p25"},
{GST_DECKLINK_MODE_2160p2398, "4k 23.98p", "2160p2398"},
{GST_DECKLINK_MODE_2160p24, "4k 24p", "2160p24"},
{GST_DECKLINK_MODE_2160p25, "4k 25p", "2160p25"},
{GST_DECKLINK_MODE_2160p2997, "4k 29.97p", "2160p2997"},
{GST_DECKLINK_MODE_2160p30, "4k 30p", "2160p30"},
{GST_DECKLINK_MODE_2160p50, "4k 50p", "2160p50"},
{GST_DECKLINK_MODE_2160p5994, "4k 59.94p", "2160p5994"},
{GST_DECKLINK_MODE_2160p60, "4k 60p", "2160p60"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkModes", modes);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_connection_get_type (void)
{
static gsize id = 0;
static const GEnumValue connections[] = {
{GST_DECKLINK_CONNECTION_AUTO, "Auto", "auto"},
{GST_DECKLINK_CONNECTION_SDI, "SDI", "sdi"},
{GST_DECKLINK_CONNECTION_HDMI, "HDMI", "hdmi"},
{GST_DECKLINK_CONNECTION_OPTICAL_SDI, "Optical SDI", "optical-sdi"},
{GST_DECKLINK_CONNECTION_COMPONENT, "Component", "component"},
{GST_DECKLINK_CONNECTION_COMPOSITE, "Composite", "composite"},
{GST_DECKLINK_CONNECTION_SVIDEO, "S-Video", "svideo"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkConnection", connections);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_video_format_get_type (void)
{
static gsize id = 0;
static const GEnumValue types[] = {
{GST_DECKLINK_VIDEO_FORMAT_AUTO, "Auto", "auto"},
{GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV, "bmdFormat8BitYUV", "8bit-yuv"},
{GST_DECKLINK_VIDEO_FORMAT_10BIT_YUV, "bmdFormat10BitYUV", "10bit-yuv"},
{GST_DECKLINK_VIDEO_FORMAT_8BIT_ARGB, "bmdFormat8BitARGB", "8bit-argb"},
{GST_DECKLINK_VIDEO_FORMAT_8BIT_BGRA, "bmdFormat8BitBGRA", "8bit-bgra"},
/* Not yet supported:
{GST_DECKLINK_VIDEO_FORMAT_10BIT_RGB, "bmdFormat10BitRGB", "10bit-rgb"},
{GST_DECKLINK_VIDEO_FORMAT_12BIT_RGB, "bmdFormat12BitRGB", "12bit-rgb"},
{GST_DECKLINK_VIDEO_FORMAT_12BIT_RGBLE, "bmdFormat12BitRGBLE", "12bit-rgble"},
{GST_DECKLINK_VIDEO_FORMAT_10BIT_RGBXLE, "bmdFormat10BitRGBXLE", "10bit-rgbxle"},
{GST_DECKLINK_VIDEO_FORMAT_10BIT_RGBX, "bmdFormat10BitRGBX", "10bit-rgbx"},
*/
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkVideoFormat", types);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_timecode_format_get_type (void)
{
static gsize id = 0;
static const GEnumValue timecodeformats[] = {
{GST_DECKLINK_TIMECODE_FORMAT_RP188VITC1, "bmdTimecodeRP188VITC1",
"rp188vitc1"},
{GST_DECKLINK_TIMECODE_FORMAT_RP188VITC2, "bmdTimecodeRP188VITC2",
"rp188vitc2"},
{GST_DECKLINK_TIMECODE_FORMAT_RP188LTC, "bmdTimecodeRP188LTC", "rp188ltc"},
{GST_DECKLINK_TIMECODE_FORMAT_RP188ANY, "bmdTimecodeRP188Any", "rp188any"},
{GST_DECKLINK_TIMECODE_FORMAT_VITC, "bmdTimecodeVITC", "vitc"},
{GST_DECKLINK_TIMECODE_FORMAT_VITCFIELD2, "bmdTimecodeVITCField2",
"vitcfield2"},
{GST_DECKLINK_TIMECODE_FORMAT_SERIAL, "bmdTimecodeSerial", "serial"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp =
g_enum_register_static ("GstDecklinkTimecodeFormat", timecodeformats);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_keyer_mode_get_type (void)
{
static gsize id = 0;
static const GEnumValue keyermodes[] = {
{GST_DECKLINK_KEYER_MODE_OFF, "Off", "off"},
{GST_DECKLINK_KEYER_MODE_INTERNAL, "Internal", "internal"},
{GST_DECKLINK_KEYER_MODE_EXTERNAL, "External", "external"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkKeyerMode", keyermodes);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_audio_connection_get_type (void)
{
static gsize id = 0;
static const GEnumValue connections[] = {
{GST_DECKLINK_AUDIO_CONNECTION_AUTO, "Automatic", "auto"},
{GST_DECKLINK_AUDIO_CONNECTION_EMBEDDED, "SDI/HDMI embedded audio",
"embedded"},
{GST_DECKLINK_AUDIO_CONNECTION_AES_EBU, "AES/EBU input", "aes"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG, "Analog input", "analog"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG_XLR, "Analog input (XLR)",
"analog-xlr"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG_RCA, "Analog input (RCA)",
"analog-rca"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp =
g_enum_register_static ("GstDecklinkAudioConnection", connections);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_audio_channels_get_type (void)
{
static gsize id = 0;
static const GEnumValue connections[] = {
{GST_DECKLINK_AUDIO_CHANNELS_2, "2 Channels", "2"},
{GST_DECKLINK_AUDIO_CHANNELS_8, "8 Channels", "8"},
{GST_DECKLINK_AUDIO_CHANNELS_16, "16 Channels", "16"},
{GST_DECKLINK_AUDIO_CHANNELS_MAX, "Maximum channels supported", "max"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp =
g_enum_register_static ("GstDecklinkAudioChannels", connections);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
#define NTSC 10, 11, false, "bt601"
#define PAL 12, 11, true, "bt601"
#define HD 1, 1, true, "bt709"
#define UHD 1, 1, true, "bt2020"
static const GstDecklinkMode modes[] = {
{bmdModeNTSC, 720, 486, 30000, 1001, true, NTSC}, // default is ntsc
{bmdModeNTSC, 720, 486, 30000, 1001, true, NTSC},
{bmdModeNTSC2398, 720, 486, 24000, 1001, true, NTSC},
{bmdModePAL, 720, 576, 25, 1, true, PAL},
{bmdModeNTSCp, 720, 486, 30000, 1001, false, NTSC},
{bmdModePALp, 720, 576, 25, 1, false, PAL},
{bmdModeHD1080p2398, 1920, 1080, 24000, 1001, false, HD},
{bmdModeHD1080p24, 1920, 1080, 24, 1, false, HD},
{bmdModeHD1080p25, 1920, 1080, 25, 1, false, HD},
{bmdModeHD1080p2997, 1920, 1080, 30000, 1001, false, HD},
{bmdModeHD1080p30, 1920, 1080, 30, 1, false, HD},
{bmdModeHD1080i50, 1920, 1080, 25, 1, true, HD},
{bmdModeHD1080i5994, 1920, 1080, 30000, 1001, true, HD},
{bmdModeHD1080i6000, 1920, 1080, 30, 1, true, HD},
{bmdModeHD1080p50, 1920, 1080, 50, 1, false, HD},
{bmdModeHD1080p5994, 1920, 1080, 60000, 1001, false, HD},
{bmdModeHD1080p6000, 1920, 1080, 60, 1, false, HD},
{bmdModeHD720p50, 1280, 720, 50, 1, false, HD},
{bmdModeHD720p5994, 1280, 720, 60000, 1001, false, HD},
{bmdModeHD720p60, 1280, 720, 60, 1, false, HD},
{bmdMode2k2398, 2048, 1556, 24000, 1001, false, HD},
{bmdMode2k24, 2048, 1556, 24, 1, false, HD},
{bmdMode2k25, 2048, 1556, 25, 1, false, HD},
{bmdMode4K2160p2398, 3840, 2160, 24000, 1001, false, UHD},
{bmdMode4K2160p24, 3840, 2160, 24, 1, false, UHD},
{bmdMode4K2160p25, 3840, 2160, 25, 1, false, UHD},
{bmdMode4K2160p2997, 3840, 2160, 30000, 1001, false, UHD},
{bmdMode4K2160p30, 3840, 2160, 30, 1, false, UHD},
{bmdMode4K2160p50, 3840, 2160, 50, 1, false, UHD},
{bmdMode4K2160p5994, 3840, 2160, 60000, 1001, false, UHD},
{bmdMode4K2160p60, 3840, 2160, 60, 1, false, UHD}
};
static const struct
{
BMDPixelFormat format;
gint bpp;
GstVideoFormat vformat;
} formats[] = {
/* *INDENT-OFF* */
{bmdFormat8BitYUV, 2, GST_VIDEO_FORMAT_UYVY}, /* auto */
{bmdFormat8BitYUV, 2, GST_VIDEO_FORMAT_UYVY},
{bmdFormat10BitYUV, 4, GST_VIDEO_FORMAT_v210},
{bmdFormat8BitARGB, 4, GST_VIDEO_FORMAT_ARGB},
{bmdFormat8BitBGRA, 4, GST_VIDEO_FORMAT_BGRA},
/* Not yet supported
{bmdFormat10BitRGB, FIXME, FIXME},
{bmdFormat12BitRGB, FIXME, FIXME},
{bmdFormat12BitRGBLE, FIXME, FIXME},
{bmdFormat10BitRGBXLE, FIXME, FIXME},
{bmdFormat10BitRGBX, FIXME, FIXME} */
/* *INDENT-ON* */
};
static const struct
{
BMDTimecodeFormat format;
GstDecklinkTimecodeFormat gstformat;
} tcformats[] = {
/* *INDENT-OFF* */
{bmdTimecodeRP188VITC1, GST_DECKLINK_TIMECODE_FORMAT_RP188VITC1},
{bmdTimecodeRP188VITC2, GST_DECKLINK_TIMECODE_FORMAT_RP188VITC2},
{bmdTimecodeRP188LTC, GST_DECKLINK_TIMECODE_FORMAT_RP188LTC},
{bmdTimecodeRP188Any, GST_DECKLINK_TIMECODE_FORMAT_RP188ANY},
{bmdTimecodeVITC, GST_DECKLINK_TIMECODE_FORMAT_VITC},
{bmdTimecodeVITCField2, GST_DECKLINK_TIMECODE_FORMAT_VITCFIELD2},
{bmdTimecodeSerial, GST_DECKLINK_TIMECODE_FORMAT_SERIAL}
/* *INDENT-ON* */
};
static const struct
{
BMDKeyerMode keymode;
GstDecklinkKeyerMode gstkeymode;
} kmodes[] = {
/* *INDENT-OFF* */
{bmdKeyerModeOff, GST_DECKLINK_KEYER_MODE_OFF},
{bmdKeyerModeInternal, GST_DECKLINK_KEYER_MODE_INTERNAL},
{bmdKeyerModeExternal, GST_DECKLINK_KEYER_MODE_EXTERNAL}
/* *INDENT-ON* */
};
const GstDecklinkMode *
gst_decklink_get_mode (GstDecklinkModeEnum e)
{
if (e < GST_DECKLINK_MODE_AUTO || e > GST_DECKLINK_MODE_2160p60)
return NULL;
return &modes[e];
}
const GstDecklinkModeEnum
gst_decklink_get_mode_enum_from_bmd (BMDDisplayMode mode)
{
GstDecklinkModeEnum displayMode = GST_DECKLINK_MODE_NTSC;
switch (mode) {
case bmdModeNTSC:
displayMode = GST_DECKLINK_MODE_NTSC;
break;
case bmdModeNTSC2398:
displayMode = GST_DECKLINK_MODE_NTSC2398;
break;
case bmdModePAL:
displayMode = GST_DECKLINK_MODE_PAL;
break;
case bmdModeNTSCp:
displayMode = GST_DECKLINK_MODE_NTSC_P;
break;
case bmdModePALp:
displayMode = GST_DECKLINK_MODE_PAL_P;
break;
case bmdModeHD1080p2398:
displayMode = GST_DECKLINK_MODE_1080p2398;
break;
case bmdModeHD1080p24:
displayMode = GST_DECKLINK_MODE_1080p24;
break;
case bmdModeHD1080p25:
displayMode = GST_DECKLINK_MODE_1080p25;
break;
case bmdModeHD1080p2997:
displayMode = GST_DECKLINK_MODE_1080p2997;
break;
case bmdModeHD1080p30:
displayMode = GST_DECKLINK_MODE_1080p30;
break;
case bmdModeHD1080i50:
displayMode = GST_DECKLINK_MODE_1080i50;
break;
case bmdModeHD1080i5994:
displayMode = GST_DECKLINK_MODE_1080i5994;
break;
case bmdModeHD1080i6000:
displayMode = GST_DECKLINK_MODE_1080i60;
break;
case bmdModeHD1080p50:
displayMode = GST_DECKLINK_MODE_1080p50;
break;
case bmdModeHD1080p5994:
displayMode = GST_DECKLINK_MODE_1080p5994;
break;
case bmdModeHD1080p6000:
displayMode = GST_DECKLINK_MODE_1080p60;
break;
case bmdModeHD720p50:
displayMode = GST_DECKLINK_MODE_720p50;
break;
case bmdModeHD720p5994:
displayMode = GST_DECKLINK_MODE_720p5994;
break;
case bmdModeHD720p60:
displayMode = GST_DECKLINK_MODE_720p60;
break;
case bmdMode2k2398:
displayMode = GST_DECKLINK_MODE_1556p2398;
break;
case bmdMode2k24:
displayMode = GST_DECKLINK_MODE_1556p24;
break;
case bmdMode2k25:
displayMode = GST_DECKLINK_MODE_1556p25;
break;
case bmdMode4K2160p2398:
displayMode = GST_DECKLINK_MODE_2160p2398;
break;
case bmdMode4K2160p24:
displayMode = GST_DECKLINK_MODE_2160p24;
break;
case bmdMode4K2160p25:
displayMode = GST_DECKLINK_MODE_2160p25;
break;
case bmdMode4K2160p2997:
displayMode = GST_DECKLINK_MODE_2160p2997;
break;
case bmdMode4K2160p30:
displayMode = GST_DECKLINK_MODE_2160p30;
break;
case bmdMode4K2160p50:
displayMode = GST_DECKLINK_MODE_2160p50;
break;
case bmdMode4K2160p5994:
displayMode = GST_DECKLINK_MODE_2160p5994;
break;
case bmdMode4K2160p60:
displayMode = GST_DECKLINK_MODE_2160p60;
break;
default:
g_assert_not_reached ();
break;
}
return displayMode;
}
const BMDPixelFormat
gst_decklink_pixel_format_from_type (GstDecklinkVideoFormat t)
{
return formats[t].format;
}
const gint
gst_decklink_bpp_from_type (GstDecklinkVideoFormat t)
{
return formats[t].bpp;
}
const GstDecklinkVideoFormat
gst_decklink_type_from_video_format (GstVideoFormat f)
{
guint i;
for (i = 1; i < G_N_ELEMENTS (formats); i++) {
if (formats[i].vformat == f)
return (GstDecklinkVideoFormat) i;
}
g_assert_not_reached ();
return GST_DECKLINK_VIDEO_FORMAT_AUTO;
}
const BMDTimecodeFormat
gst_decklink_timecode_format_from_enum (GstDecklinkTimecodeFormat f)
{
return tcformats[f].format;
}
const GstDecklinkTimecodeFormat
gst_decklink_timecode_format_to_enum (BMDTimecodeFormat f)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (tcformats); i++) {
if (tcformats[i].format == f)
return (GstDecklinkTimecodeFormat) i;
}
g_assert_not_reached ();
return GST_DECKLINK_TIMECODE_FORMAT_RP188ANY;
}
const BMDKeyerMode
gst_decklink_keyer_mode_from_enum (GstDecklinkKeyerMode m)
{
return kmodes[m].keymode;
}
const GstDecklinkKeyerMode
gst_decklink_keyer_mode_to_enum (BMDKeyerMode m)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (kmodes); i++) {
if (kmodes[i].keymode == m)
return (GstDecklinkKeyerMode) i;
}
g_assert_not_reached ();
return GST_DECKLINK_KEYER_MODE_OFF;
}
static const BMDVideoConnection connections[] = {
(BMDVideoConnection) 0, /* auto */
bmdVideoConnectionSDI,
bmdVideoConnectionHDMI,
bmdVideoConnectionOpticalSDI,
bmdVideoConnectionComponent,
bmdVideoConnectionComposite,
bmdVideoConnectionSVideo
};
const BMDVideoConnection
gst_decklink_get_connection (GstDecklinkConnectionEnum e)
{
g_return_val_if_fail (e != GST_DECKLINK_CONNECTION_AUTO,
bmdVideoConnectionSDI);
if (e <= GST_DECKLINK_CONNECTION_AUTO || e > GST_DECKLINK_CONNECTION_SVIDEO)
e = GST_DECKLINK_CONNECTION_SDI;
return connections[e];
}
static gboolean
gst_decklink_caps_get_pixel_format (GstCaps * caps, BMDPixelFormat * format)
{
GstVideoInfo vinfo;
GstVideoFormat f;
if (gst_video_info_from_caps (&vinfo, caps) == FALSE) {
GST_ERROR ("Could not get video info from caps: %" GST_PTR_FORMAT, caps);
return FALSE;
}
f = vinfo.finfo->format;
return gst_decklink_type_from_video_format (f);
}
static GstStructure *
gst_decklink_mode_get_structure (GstDecklinkModeEnum e, BMDPixelFormat f,
gboolean input)
{
const GstDecklinkMode *mode = &modes[e];
GstStructure *s = gst_structure_new ("video/x-raw",
"width", G_TYPE_INT, mode->width,
"height", G_TYPE_INT, mode->height,
"pixel-aspect-ratio", GST_TYPE_FRACTION, mode->par_n, mode->par_d,
"interlace-mode", G_TYPE_STRING,
mode->interlaced ? "interleaved" : "progressive",
"framerate", GST_TYPE_FRACTION, mode->fps_n, mode->fps_d, NULL);
if (input && mode->interlaced) {
if (mode->tff)
gst_structure_set (s, "field-order", G_TYPE_STRING, "top-field-first",
NULL);
else
gst_structure_set (s, "field-order", G_TYPE_STRING, "bottom-field-first",
NULL);
}
switch (f) {
case bmdFormat8BitYUV: /* '2vuy' */
gst_structure_set (s, "format", G_TYPE_STRING, "UYVY",
"colorimetry", G_TYPE_STRING, mode->colorimetry,
"chroma-site", G_TYPE_STRING, "mpeg2", NULL);
break;
case bmdFormat10BitYUV: /* 'v210' */
gst_structure_set (s, "format", G_TYPE_STRING, "v210", NULL);
break;
case bmdFormat8BitARGB: /* 'ARGB' */
gst_structure_set (s, "format", G_TYPE_STRING, "ARGB", NULL);
break;
case bmdFormat8BitBGRA: /* 'BGRA' */
gst_structure_set (s, "format", G_TYPE_STRING, "BGRA", NULL);
break;
case bmdFormat10BitRGB: /* 'r210' Big-endian RGB 10-bit per component with SMPTE video levels (64-960). Packed as 2:10:10:10 */
case bmdFormat12BitRGB: /* 'R12B' Big-endian RGB 12-bit per component with full range (0-4095). Packed as 12-bit per component */
case bmdFormat12BitRGBLE: /* 'R12L' Little-endian RGB 12-bit per component with full range (0-4095). Packed as 12-bit per component */
case bmdFormat10BitRGBXLE: /* 'R10l' Little-endian 10-bit RGB with SMPTE video levels (64-940) */
case bmdFormat10BitRGBX: /* 'R10b' Big-endian 10-bit RGB with SMPTE video levels (64-940) */
default:
GST_WARNING ("format not supported %d", f);
gst_structure_free (s);
s = NULL;
break;
}
return s;
}
GstCaps *
gst_decklink_mode_get_caps (GstDecklinkModeEnum e, BMDPixelFormat f,
gboolean input)
{
GstCaps *caps;
caps = gst_caps_new_empty ();
caps =
gst_caps_merge_structure (caps, gst_decklink_mode_get_structure (e, f,
input));
return caps;
}
GstCaps *
gst_decklink_mode_get_caps_all_formats (GstDecklinkModeEnum e, gboolean input)
{
GstCaps *caps;
guint i;
caps = gst_caps_new_empty ();
for (i = 1; i < G_N_ELEMENTS (formats); i++)
caps =
gst_caps_merge_structure (caps, gst_decklink_mode_get_structure (e,
formats[i].format, input));
return caps;
}
GstCaps *
gst_decklink_pixel_format_get_caps (BMDPixelFormat f, gboolean input)
{
int i;
GstCaps *caps;
GstStructure *s;
caps = gst_caps_new_empty ();
for (i = 1; i < (int) G_N_ELEMENTS (modes); i++) {
s = gst_decklink_mode_get_structure ((GstDecklinkModeEnum) i, f, input);
caps = gst_caps_merge_structure (caps, s);
}
return caps;
}
GstCaps *
gst_decklink_mode_get_template_caps (gboolean input)
{
int i;
GstCaps *caps;
caps = gst_caps_new_empty ();
for (i = 1; i < (int) G_N_ELEMENTS (modes); i++)
caps =
gst_caps_merge (caps,
gst_decklink_mode_get_caps_all_formats ((GstDecklinkModeEnum) i,
input));
return caps;
}
const GstDecklinkMode *
gst_decklink_find_mode_and_format_for_caps (GstCaps * caps,
BMDPixelFormat * format)
{
int i;
GstCaps *mode_caps;
g_return_val_if_fail (gst_caps_is_fixed (caps), NULL);
if (!gst_decklink_caps_get_pixel_format (caps, format))
return NULL;
for (i = 1; i < (int) G_N_ELEMENTS (modes); i++) {
mode_caps =
gst_decklink_mode_get_caps ((GstDecklinkModeEnum) i, *format, FALSE);
if (gst_caps_can_intersect (caps, mode_caps)) {
gst_caps_unref (mode_caps);
return gst_decklink_get_mode ((GstDecklinkModeEnum) i);
}
gst_caps_unref (mode_caps);
}
return NULL;
}
const GstDecklinkMode *
gst_decklink_find_mode_for_caps (GstCaps * caps)
{
BMDPixelFormat format;
return gst_decklink_find_mode_and_format_for_caps (caps, &format);
}
#define GST_TYPE_DECKLINK_CLOCK \
(gst_decklink_clock_get_type())
#define GST_DECKLINK_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECKLINK_CLOCK,GstDecklinkClock))
#define GST_DECKLINK_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DECKLINK_CLOCK,GstDecklinkClockClass))
#define GST_IS_Decklink_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DECKLINK_CLOCK))
#define GST_IS_Decklink_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DECKLINK_CLOCK))
#define GST_DECKLINK_CLOCK_CAST(obj) \
((GstDecklinkClock*)(obj))
typedef struct _GstDecklinkClock GstDecklinkClock;
typedef struct _GstDecklinkClockClass GstDecklinkClockClass;
struct _GstDecklinkClock
{
GstSystemClock clock;
GstDecklinkOutput *output;
};
struct _GstDecklinkClockClass
{
GstSystemClockClass parent_class;
};
GType gst_decklink_clock_get_type (void);
static GstClock *gst_decklink_clock_new (const gchar * name);
typedef struct _Device Device;
struct _Device
{
GstDecklinkOutput output;
GstDecklinkInput input;
};
class GStreamerDecklinkInputCallback:public IDeckLinkInputCallback
{
private:
GstDecklinkInput * m_input;
GMutex m_mutex;
gint m_refcount;
public:
GStreamerDecklinkInputCallback (GstDecklinkInput * input)
: IDeckLinkInputCallback (), m_refcount (1)
{
m_input = input;
g_mutex_init (&m_mutex);
}
virtual ~ GStreamerDecklinkInputCallback ()
{
g_mutex_clear (&m_mutex);
}
virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID *)
{
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount++;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
return ret;
}
virtual ULONG STDMETHODCALLTYPE Release (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount--;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
if (ret == 0) {
delete this;
}
return ret;
}
virtual HRESULT STDMETHODCALLTYPE
VideoInputFormatChanged (BMDVideoInputFormatChangedEvents,
IDeckLinkDisplayMode * mode, BMDDetectedVideoInputFormatFlags formatFlags)
{
BMDPixelFormat pixelFormat = bmdFormat8BitYUV;
GST_INFO ("Video input format changed");
if (formatFlags & bmdDetectedVideoInputRGB444)
pixelFormat = bmdFormat8BitARGB;
g_mutex_lock (&m_input->lock);
m_input->input->PauseStreams ();
m_input->input->EnableVideoInput (mode->GetDisplayMode (),
pixelFormat, bmdVideoInputEnableFormatDetection);
m_input->input->FlushStreams ();
m_input->input->StartStreams ();
m_input->mode =
gst_decklink_get_mode (gst_decklink_get_mode_enum_from_bmd
(mode->GetDisplayMode ()));
m_input->format = pixelFormat;
g_mutex_unlock (&m_input->lock);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE
VideoInputFrameArrived (IDeckLinkVideoInputFrame * video_frame,
IDeckLinkAudioInputPacket * audio_packet)
{
GstElement *videosrc = NULL, *audiosrc = NULL;
void (*got_video_frame) (GstElement * videosrc,
IDeckLinkVideoInputFrame * frame, GstDecklinkModeEnum mode,
GstClockTime capture_time, GstClockTime stream_time,
GstClockTime stream_duration, GstClockTime hardware_time,
GstClockTime hardware_duration, IDeckLinkTimecode * dtc,
gboolean no_signal) = NULL;
void (*got_audio_packet) (GstElement * videosrc,
IDeckLinkAudioInputPacket * packet, GstClockTime capture_time,
GstClockTime stream_time, GstClockTime stream_duration,
GstClockTime hardware_time, GstClockTime hardware_duration,
gboolean no_signal) = NULL;
GstDecklinkModeEnum mode;
GstClockTime capture_time = GST_CLOCK_TIME_NONE;
GstClockTime base_time = 0;
gboolean no_signal = FALSE;
GstClock *clock = NULL;
HRESULT res;
BMDTimeValue stream_time = GST_CLOCK_TIME_NONE;
BMDTimeValue stream_duration = GST_CLOCK_TIME_NONE;
BMDTimeValue hardware_time = GST_CLOCK_TIME_NONE;
BMDTimeValue hardware_duration = GST_CLOCK_TIME_NONE;
g_mutex_lock (&m_input->lock);
if (m_input->videosrc) {
videosrc = GST_ELEMENT_CAST (gst_object_ref (m_input->videosrc));
clock = gst_element_get_clock (videosrc);
base_time = gst_element_get_base_time (videosrc);
got_video_frame = m_input->got_video_frame;
}
mode = gst_decklink_get_mode_enum_from_bmd (m_input->mode->mode);
if (m_input->audiosrc) {
audiosrc = GST_ELEMENT_CAST (gst_object_ref (m_input->audiosrc));
if (!clock) {
clock = gst_element_get_clock (GST_ELEMENT_CAST (audiosrc));
base_time = gst_element_get_base_time (audiosrc);
}
got_audio_packet = m_input->got_audio_packet;
}
g_mutex_unlock (&m_input->lock);
if (clock) {
capture_time = gst_clock_get_time (clock);
if (capture_time > base_time)
capture_time -= base_time;
else
capture_time = 0;
}
if (video_frame) {
BMDFrameFlags flags;
flags = video_frame->GetFlags ();
if (flags & bmdFrameHasNoInputSource) {
no_signal = TRUE;
}
}
if (got_video_frame && videosrc && video_frame) {
IDeckLinkTimecode *dtc = 0;
res =
video_frame->GetStreamTime (&stream_time, &stream_duration,
GST_SECOND);
if (res != S_OK) {
GST_ERROR ("Failed to get stream time: 0x%08lx", (unsigned long) res);
stream_time = GST_CLOCK_TIME_NONE;
stream_duration = GST_CLOCK_TIME_NONE;
}
res =
video_frame->GetHardwareReferenceTimestamp (GST_SECOND,
&hardware_time, &hardware_duration);
if (res != S_OK) {
GST_ERROR ("Failed to get hardware time: 0x%08lx", (unsigned long) res);
hardware_time = GST_CLOCK_TIME_NONE;
hardware_duration = GST_CLOCK_TIME_NONE;
}
if (m_input->videosrc) {
/* FIXME: Avoid circularity between gstdecklink.cpp and
* gstdecklinkvideosrc.cpp */
res =
video_frame->
GetTimecode (GST_DECKLINK_VIDEO_SRC (videosrc)->timecode_format,
&dtc);
if (res != S_OK) {
GST_DEBUG_OBJECT (videosrc, "Failed to get timecode: 0x%08lx",
(unsigned long) res);
dtc = NULL;
}
}
/* passing dtc reference */
got_video_frame (videosrc, video_frame, mode, capture_time,
stream_time, stream_duration, hardware_time, hardware_duration, dtc,
no_signal);
}
if (got_audio_packet && audiosrc && audio_packet) {
m_input->got_audio_packet (audiosrc, audio_packet, capture_time,
stream_time, stream_duration, hardware_time, hardware_duration,
no_signal);
} else {
if (!audio_packet)
GST_DEBUG ("Received no audio packet at %" GST_TIME_FORMAT,
GST_TIME_ARGS (capture_time));
}
gst_object_replace ((GstObject **) & videosrc, NULL);
gst_object_replace ((GstObject **) & audiosrc, NULL);
gst_object_replace ((GstObject **) & clock, NULL);
return S_OK;
}
};
class GStreamerDecklinkMemoryAllocator:public IDeckLinkMemoryAllocator
{
private:
GMutex m_mutex;
uint32_t m_lastBufferSize;
uint32_t m_nonEmptyCalls;
GstQueueArray *m_buffers;
gint m_refcount;
void _clearBufferPool ()
{
uint8_t *buf;
if (!m_buffers)
return;
while ((buf = (uint8_t *) gst_queue_array_pop_head (m_buffers)))
g_free (buf - 128);
}
public:
GStreamerDecklinkMemoryAllocator ()
: IDeckLinkMemoryAllocator (),
m_lastBufferSize (0),
m_nonEmptyCalls (0), m_buffers (NULL), m_refcount (1)
{
g_mutex_init (&m_mutex);
m_buffers = gst_queue_array_new (60);
}
virtual ~ GStreamerDecklinkMemoryAllocator () {
Decommit ();
gst_queue_array_free (m_buffers);
g_mutex_clear (&m_mutex);
}
virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID *)
{
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount++;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
return ret;
}
virtual ULONG STDMETHODCALLTYPE Release (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount--;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
if (ret == 0) {
delete this;
}
return ret;
}
virtual HRESULT STDMETHODCALLTYPE
AllocateBuffer (uint32_t bufferSize, void **allocatedBuffer)
{
uint8_t *buf;
g_mutex_lock (&m_mutex);
/* If buffer size changed since last call, empty buffer pool */
if (bufferSize != m_lastBufferSize) {
_clearBufferPool ();
m_lastBufferSize = bufferSize;
}
/* Look if there is a free buffer in the pool */
if (!(buf = (uint8_t *) gst_queue_array_pop_head (m_buffers))) {
/* If not, alloc a new one */
buf = (uint8_t *) g_malloc (bufferSize + 128);
*((uint32_t *) buf) = bufferSize;
buf += 128;
}
*allocatedBuffer = (void *) buf;
/* If there are still unused buffers in the pool
* remove one of them every fifth call */
if (gst_queue_array_get_length (m_buffers) > 0) {
if (++m_nonEmptyCalls >= 5) {
buf = (uint8_t *) gst_queue_array_pop_head (m_buffers) - 128;
g_free (buf);
m_nonEmptyCalls = 0;
}
} else {
m_nonEmptyCalls = 0;
}
g_mutex_unlock (&m_mutex);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE ReleaseBuffer (void *buffer)
{
g_mutex_lock (&m_mutex);
/* Put the buffer back to the pool if size matches with current pool */
uint32_t size = *(uint32_t *) ((uint8_t *) buffer - 128);
if (size == m_lastBufferSize) {
gst_queue_array_push_tail (m_buffers, buffer);
} else {
g_free (((uint8_t *) buffer) - 128);
}
g_mutex_unlock (&m_mutex);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE Commit ()
{
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE Decommit ()
{
/* Clear all remaining pools */
_clearBufferPool ();
return S_OK;
}
};
#ifdef _MSC_VER
/* FIXME: We currently never deinit this */
static GMutex com_init_lock;
static GMutex com_deinit_lock;
static GCond com_init_cond;
static GCond com_deinit_cond;
static GCond com_deinited_cond;
static gboolean com_initialized = FALSE;
/* COM initialization/uninitialization thread */
static gpointer
gst_decklink_com_thread (gpointer data)
{
HRESULT res;
g_mutex_lock (&com_init_lock);
/* Initialize COM with a MTA for this process. This thread will
* be the first one to enter the apartement and the last one to leave
* it, unitializing COM properly */
res = CoInitializeEx (0, COINIT_MULTITHREADED);
if (res == S_FALSE)
GST_WARNING ("COM has been already initialized in the same process");
else if (res == RPC_E_CHANGED_MODE)
GST_WARNING ("The concurrency model of COM has changed.");
else
GST_INFO ("COM intialized succesfully");
com_initialized = TRUE;
/* Signal other threads waiting on this condition that COM was initialized */
g_cond_signal (&com_init_cond);
g_mutex_unlock (&com_init_lock);
/* Wait until the unitialize condition is met to leave the COM apartement */
g_mutex_lock (&com_deinit_lock);
g_cond_wait (&com_deinit_cond, &com_deinit_lock);
CoUninitialize ();
GST_INFO ("COM unintialized succesfully");
com_initialized = FALSE;
g_cond_signal (&com_deinited_cond);
g_mutex_unlock (&com_deinit_lock);
return NULL;
}
#endif /* _MSC_VER */
static GOnce devices_once = G_ONCE_INIT;
static GArray *devices; /* array of Device */
static gpointer
init_devices (gpointer data)
{
IDeckLinkIterator *iterator;
IDeckLink *decklink = NULL;
HRESULT ret;
int i;
#ifdef _MSC_VER
// Start COM thread for Windows
g_mutex_lock (&com_init_lock);
/* create the COM initialization thread */
g_thread_create ((GThreadFunc) gst_decklink_com_thread, NULL, FALSE, NULL);
/* wait until the COM thread signals that COM has been initialized */
g_cond_wait (&com_init_cond, &com_init_lock);
g_mutex_unlock (&com_init_lock);
#endif /* _MSC_VER */
iterator = CreateDeckLinkIteratorInstance ();
if (iterator == NULL) {
GST_ERROR ("no driver");
return NULL;
}
devices = g_array_new (FALSE, TRUE, sizeof (Device));
i = 0;
ret = iterator->Next (&decklink);
while (ret == S_OK) {
Device dev;
memset (&dev, 0, sizeof (Device));
g_mutex_init (&dev.input.lock);
g_mutex_init (&dev.output.lock);
g_cond_init (&dev.output.cond);
ret = decklink->QueryInterface (IID_IDeckLinkInput,
(void **) &dev.input.input);
if (ret != S_OK) {
GST_WARNING ("selected device does not have input interface: 0x%08lx",
(unsigned long) ret);
} else {
IDeckLinkDisplayModeIterator *mode_iter;
dev.input.device = decklink;
dev.input.
input->SetCallback (new GStreamerDecklinkInputCallback (&dev.input));
if ((ret = dev.input.input->GetDisplayModeIterator (&mode_iter)) == S_OK) {
IDeckLinkDisplayMode *mode;
GST_DEBUG ("Input %d supports:", i);
while ((ret = mode_iter->Next (&mode)) == S_OK) {
char *name;
mode->GetName ((COMSTR_T *) & name);
CONVERT_COM_STRING (name);
GST_DEBUG (" %s mode: 0x%08x width: %ld height: %ld"
" fields: 0x%08x flags: 0x%08x", name,
(int) mode->GetDisplayMode (), mode->GetWidth (),
mode->GetHeight (), (int) mode->GetFieldDominance (),
(int) mode->GetFlags ());
FREE_COM_STRING (name);
mode->Release ();
}
mode_iter->Release ();
}
ret = S_OK;
}
ret = decklink->QueryInterface (IID_IDeckLinkOutput,
(void **) &dev.output.output);
if (ret != S_OK) {
GST_WARNING ("selected device does not have output interface: 0x%08lx",
(unsigned long) ret);
} else {
IDeckLinkDisplayModeIterator *mode_iter;
dev.output.device = decklink;
dev.output.clock =
gst_decklink_clock_new ("GstDecklinkOutputClock");
GST_DECKLINK_CLOCK_CAST (dev.output.clock)->output =
&dev.output;
if ((ret = dev.output.output->GetDisplayModeIterator (&mode_iter)) == S_OK) {
IDeckLinkDisplayMode *mode;
GST_DEBUG ("Output %d supports:", i);
while ((ret = mode_iter->Next (&mode)) == S_OK) {
char *name;
mode->GetName ((COMSTR_T *) & name);
CONVERT_COM_STRING (name);
GST_DEBUG (" %s mode: 0x%08x width: %ld height: %ld"
" fields: 0x%08x flags: 0x%08x", name,
(int) mode->GetDisplayMode (), mode->GetWidth (),
mode->GetHeight (), (int) mode->GetFieldDominance (),
(int) mode->GetFlags ());
FREE_COM_STRING (name);
mode->Release ();
}
mode_iter->Release ();
}
ret = S_OK;
}
ret = decklink->QueryInterface (IID_IDeckLinkConfiguration,
(void **) &dev.input.config);
if (ret != S_OK) {
GST_WARNING ("selected device does not have config interface: 0x%08lx",
(unsigned long) ret);
} else {
char *serial_number;
ret =
dev.input.
config->GetString (bmdDeckLinkConfigDeviceInformationSerialNumber,
(COMSTR_T *) & serial_number);
if (ret == S_OK) {
CONVERT_COM_STRING (serial_number);
dev.output.hw_serial_number = g_strdup (serial_number);
dev.input.hw_serial_number = g_strdup (serial_number);
GST_DEBUG ("device %d has serial number %s", i, serial_number);
FREE_COM_STRING (serial_number);
}
}
ret = decklink->QueryInterface (IID_IDeckLinkAttributes,
(void **) &dev.input.attributes);
dev.output.attributes = dev.input.attributes;
if (ret != S_OK) {
GST_WARNING ("selected device does not have attributes interface: "
"0x%08lx", (unsigned long) ret);
}
ret = decklink->QueryInterface (IID_IDeckLinkKeyer,
(void **) &dev.output.keyer);
g_array_append_val (devices, dev);
/* We only warn of failure to obtain the keyer interface if the keyer
* is enabled by keyer_mode
*/
ret = iterator->Next (&decklink);
i++;
}
GST_INFO ("Detected %u devices", devices->len);
iterator->Release ();
return NULL;
}
GstDecklinkOutput *
gst_decklink_acquire_nth_output (gint n, GstElement * sink, gboolean is_audio)
{
GstDecklinkOutput *output;
Device *device;
g_once (&devices_once, init_devices, NULL);
if (devices == NULL)
return NULL;
if (n < 0 || (guint) n >= devices->len)
return NULL;
device = &g_array_index (devices, Device, n);
output = &device->output;
if (!output->output) {
GST_ERROR ("Device %d has no output", n);
return NULL;
}
g_mutex_lock (&output->lock);
if (is_audio && !output->audiosink) {
output->audiosink = GST_ELEMENT_CAST (gst_object_ref (sink));
g_mutex_unlock (&output->lock);
return output;
} else if (!output->videosink) {
output->videosink = GST_ELEMENT_CAST (gst_object_ref (sink));
g_mutex_unlock (&output->lock);
return output;
}
g_mutex_unlock (&output->lock);
GST_ERROR ("Output device %d (audio: %d) in use already", n, is_audio);
return NULL;
}
void
gst_decklink_release_nth_output (gint n, GstElement * sink, gboolean is_audio)
{
GstDecklinkOutput *output;
Device *device;
if (devices == NULL)
return;
if (n < 0 || (guint) n >= devices->len)
return;
device = &g_array_index (devices, Device, n);
output = &device->output;
g_assert (output->output);
g_mutex_lock (&output->lock);
if (is_audio) {
g_assert (output->audiosink == sink);
gst_object_unref (sink);
output->audiosink = NULL;
} else {
g_assert (output->videosink == sink);
gst_object_unref (sink);
output->videosink = NULL;
}
g_mutex_unlock (&output->lock);
}
GstDecklinkInput *
gst_decklink_acquire_nth_input (gint n, GstElement * src, gboolean is_audio)
{
GstDecklinkInput *input;
Device *device;
g_once (&devices_once, init_devices, NULL);
if (devices == NULL)
return NULL;
if (n < 0 || (guint) n >= devices->len)
return NULL;
device = &g_array_index (devices, Device, n);
input = &device->input;
if (!input->input) {
GST_ERROR ("Device %d has no input", n);
return NULL;
}
g_mutex_lock (&input->lock);
input->input->SetVideoInputFrameMemoryAllocator (new
GStreamerDecklinkMemoryAllocator);
if (is_audio && !input->audiosrc) {
input->audiosrc = GST_ELEMENT_CAST (gst_object_ref (src));
g_mutex_unlock (&input->lock);
return input;
} else if (!input->videosrc) {
input->videosrc = GST_ELEMENT_CAST (gst_object_ref (src));
g_mutex_unlock (&input->lock);
return input;
}
g_mutex_unlock (&input->lock);
GST_ERROR ("Input device %d (audio: %d) in use already", n, is_audio);
return NULL;
}
void
gst_decklink_release_nth_input (gint n, GstElement * src, gboolean is_audio)
{
GstDecklinkInput *input;
Device *device;
if (devices == NULL)
return;
if (n < 0 || (guint) n >= devices->len)
return;
device = &g_array_index (devices, Device, n);
input = &device->input;
g_assert (input->input);
g_mutex_lock (&input->lock);
if (is_audio) {
g_assert (input->audiosrc == src);
gst_object_unref (src);
input->audiosrc = NULL;
} else {
g_assert (input->videosrc == src);
gst_object_unref (src);
input->videosrc = NULL;
}
g_mutex_unlock (&input->lock);
}
G_DEFINE_TYPE (GstDecklinkClock, gst_decklink_clock, GST_TYPE_SYSTEM_CLOCK);
static GstClockTime gst_decklink_clock_get_internal_time (GstClock * clock);
static void
gst_decklink_clock_class_init (GstDecklinkClockClass * klass)
{
GstClockClass *clock_class = (GstClockClass *) klass;
clock_class->get_internal_time = gst_decklink_clock_get_internal_time;
}
static void
gst_decklink_clock_init (GstDecklinkClock * clock)
{
GST_OBJECT_FLAG_SET (clock, GST_CLOCK_FLAG_CAN_SET_MASTER);
}
static GstClock *
gst_decklink_clock_new (const gchar * name)
{
GstDecklinkClock *self =
GST_DECKLINK_CLOCK (g_object_new (GST_TYPE_DECKLINK_CLOCK, "name", name,
"clock-type", GST_CLOCK_TYPE_OTHER, NULL));
gst_object_ref_sink (self);
return GST_CLOCK_CAST (self);
}
static GstClockTime
gst_decklink_clock_get_internal_time (GstClock * clock)
{
GstDecklinkClock *self = GST_DECKLINK_CLOCK (clock);
GstClockTime result, start_time, last_time;
GstClockTimeDiff offset;
BMDTimeValue time;
HRESULT ret;
g_mutex_lock (&self->output->lock);
start_time = self->output->clock_start_time;
offset = self->output->clock_offset;
last_time = self->output->clock_last_time;
time = -1;
if (!self->output->started) {
result = last_time;
ret = -1;
} else {
ret =
self->output->output->GetHardwareReferenceClock (GST_SECOND, &time,
NULL, NULL);
if (ret == S_OK && time >= 0) {
result = time;
if (start_time == GST_CLOCK_TIME_NONE)
start_time = self->output->clock_start_time = result;
if (result > start_time)
result -= start_time;
else
result = 0;
if (self->output->clock_restart) {
self->output->clock_offset = result - last_time;
offset = self->output->clock_offset;
self->output->clock_restart = FALSE;
}
result = MAX (last_time, result);
result -= offset;
result = MAX (last_time, result);
} else {
result = last_time;
}
self->output->clock_last_time = result;
}
result += self->output->clock_epoch;
g_mutex_unlock (&self->output->lock);
GST_LOG_OBJECT (clock,
"result %" GST_TIME_FORMAT " time %" GST_TIME_FORMAT " last time %"
GST_TIME_FORMAT " offset %" GST_TIME_FORMAT " start time %"
GST_TIME_FORMAT " (ret: 0x%08lx)", GST_TIME_ARGS (result),
GST_TIME_ARGS (time), GST_TIME_ARGS (last_time), GST_TIME_ARGS (offset),
GST_TIME_ARGS (start_time), (unsigned long) ret);
return result;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_decklink_debug, "decklink", 0,
"debug category for decklink plugin");
gst_element_register (plugin, "decklinkaudiosink", GST_RANK_NONE,
GST_TYPE_DECKLINK_AUDIO_SINK);
gst_element_register (plugin, "decklinkvideosink", GST_RANK_NONE,
GST_TYPE_DECKLINK_VIDEO_SINK);
gst_element_register (plugin, "decklinkaudiosrc", GST_RANK_NONE,
GST_TYPE_DECKLINK_AUDIO_SRC);
gst_element_register (plugin, "decklinkvideosrc", GST_RANK_NONE,
GST_TYPE_DECKLINK_VIDEO_SRC);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
decklink,
"Blackmagic Decklink plugin",
plugin_init, VERSION, "LGPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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