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gstreamer/sys/decklink/gstdecklink.cpp
Vivia Nikolaidou bae9427dc1 decklink: Don't crash when getting hw serial number doesn't return OK 
If the return value isn't OK, it means we might be getting data that
points to an invalid memory address. That shouldn't make us crash.
2017-11-09 00:19:42 +02:00

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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"
#define GST_DECKLINK_MAX_DEVICES 16
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 int n_devices;
static Device devices[GST_DECKLINK_MAX_DEVICES];
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;
}
i = 0;
ret = iterator->Next (&decklink);
while (ret == S_OK) {
ret = decklink->QueryInterface (IID_IDeckLinkInput,
(void **) &devices[i].input.input);
if (ret != S_OK) {
GST_WARNING ("selected device does not have input interface: 0x%08lx",
(unsigned long) ret);
} else {
IDeckLinkDisplayModeIterator *mode_iter;
devices[i].input.device = decklink;
devices[i].input.
input->SetCallback (new GStreamerDecklinkInputCallback (&devices[i].
input));
if ((ret =
devices[i].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 **) &devices[i].output.output);
if (ret != S_OK) {
GST_WARNING ("selected device does not have output interface: 0x%08lx",
(unsigned long) ret);
} else {
IDeckLinkDisplayModeIterator *mode_iter;
devices[i].output.device = decklink;
devices[i].output.clock =
gst_decklink_clock_new ("GstDecklinkOutputClock");
GST_DECKLINK_CLOCK_CAST (devices[i].output.clock)->output =
&devices[i].output;
if ((ret =
devices[i].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 **) &devices[i].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 =
devices[i].input.
config->GetString (bmdDeckLinkConfigDeviceInformationSerialNumber,
(COMSTR_T *) & serial_number);
if (ret == S_OK) {
CONVERT_COM_STRING (serial_number);
devices[i].output.hw_serial_number = g_strdup (serial_number);
devices[i].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 **) &devices[i].input.attributes);
devices[i].output.attributes = devices[i].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 **) &devices[i].output.keyer);
/* We only warn of failure to obtain the keyer interface if the keyer
* is enabled by keyer_mode
*/
ret = iterator->Next (&decklink);
i++;
if (i == GST_DECKLINK_MAX_DEVICES) {
GST_WARNING ("this hardware has more then 10 devices");
break;
}
}
n_devices = i;
iterator->Release ();
return NULL;
}
GstDecklinkOutput *
gst_decklink_acquire_nth_output (gint n, GstElement * sink, gboolean is_audio)
{
GstDecklinkOutput *output;
g_once (&devices_once, init_devices, NULL);
if (n >= n_devices)
return NULL;
output = &devices[n].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;
if (n >= n_devices)
return;
output = &devices[n].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);
}
void
gst_decklink_output_set_audio_clock (GstDecklinkOutput * output,
GstClock * clock)
{
g_mutex_lock (&output->lock);
if (output->audio_clock)
gst_object_unref (output->audio_clock);
output->audio_clock = clock;
if (clock)
gst_object_ref (clock);
g_mutex_unlock (&output->lock);
}
GstClock *
gst_decklink_output_get_audio_clock (GstDecklinkOutput * output)
{
GstClock *ret = NULL;
g_mutex_lock (&output->lock);
if (output->audio_clock)
ret = GST_CLOCK_CAST (gst_object_ref (output->audio_clock));
g_mutex_unlock (&output->lock);
return ret;
}
GstDecklinkInput *
gst_decklink_acquire_nth_input (gint n, GstElement * src, gboolean is_audio)
{
GstDecklinkInput *input;
g_once (&devices_once, init_devices, NULL);
if (n >= n_devices)
return NULL;
input = &devices[n].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;
if (n >= n_devices)
return;
input = &devices[n].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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