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gstreamer/gstajacommon.cpp

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/* GStreamer
* Copyright (C) 2021 Sebastian Dröge <sebastian@centricular.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 <fcntl.h>
#include <semaphore.h>
#include "gstajacommon.h"
GST_DEBUG_CATEGORY_STATIC(gst_aja_debug);
#define GST_CAT_DEFAULT gst_aja_debug
static const NTV2VideoFormat supported_video_formats[] = {
NTV2_FORMAT_1080i_5000, NTV2_FORMAT_1080i_5994,
NTV2_FORMAT_1080i_6000, NTV2_FORMAT_720p_5994,
NTV2_FORMAT_720p_6000, NTV2_FORMAT_1080p_2997,
NTV2_FORMAT_1080p_3000, NTV2_FORMAT_1080p_2500,
NTV2_FORMAT_1080p_2398, NTV2_FORMAT_1080p_2400,
NTV2_FORMAT_720p_5000, NTV2_FORMAT_720p_2398,
NTV2_FORMAT_720p_2500, NTV2_FORMAT_1080p_5000_A,
NTV2_FORMAT_1080p_5994_A, NTV2_FORMAT_1080p_6000_A,
NTV2_FORMAT_625_5000, NTV2_FORMAT_525_5994,
NTV2_FORMAT_525_2398, NTV2_FORMAT_525_2400};
GstCaps *gst_ntv2_supported_caps(NTV2DeviceID device_id) {
GstCaps *caps = gst_caps_new_empty();
for (gsize i = 0; i < G_N_ELEMENTS(supported_video_formats); i++) {
NTV2VideoFormat format = supported_video_formats[i];
if (device_id == DEVICE_ID_INVALID ||
::NTV2DeviceCanDoVideoFormat(device_id, format)) {
gst_caps_append(caps, gst_ntv2_video_format_to_caps(format));
}
}
return caps;
}
GstCaps *gst_ntv2_video_format_to_caps(NTV2VideoFormat format) {
GstVideoInfo info;
guint width = ::GetDisplayWidth(format);
guint height = ::GetDisplayHeight(format);
NTV2FrameRate fps = ::GetNTV2FrameRateFromVideoFormat(format);
guint fps_n, fps_d;
::GetFramesPerSecond(fps, fps_n, fps_d);
gst_video_info_set_format(&info, GST_VIDEO_FORMAT_v210, width, height);
info.fps_n = fps_n;
info.fps_d = fps_d;
if (NTV2_IS_525_FORMAT(format)) {
info.par_n = 10;
info.par_d = 11;
} else if (NTV2_IS_625_FORMAT(format)) {
info.par_n = 12;
info.par_d = 11;
}
info.interlace_mode = !::IsProgressiveTransport(format)
? GST_VIDEO_INTERLACE_MODE_INTERLEAVED
: GST_VIDEO_INTERLACE_MODE_PROGRESSIVE;
return gst_video_info_to_caps(&info);
}
NTV2VideoFormat gst_ntv2_video_format_from_caps(GstCaps *caps) {
GstVideoInfo info;
if (!gst_video_info_from_caps(&info, caps)) return NTV2_FORMAT_UNKNOWN;
for (gsize i = 0; i < G_N_ELEMENTS(supported_video_formats); i++) {
NTV2VideoFormat format = supported_video_formats[i];
guint width = ::GetDisplayWidth(format);
guint height = ::GetDisplayHeight(format);
NTV2FrameRate fps = ::GetNTV2FrameRateFromVideoFormat(format);
guint fps_n, fps_d;
::GetFramesPerSecond(fps, fps_n, fps_d);
if (width == (guint)info.width && height == (guint)info.height &&
(guint)info.fps_n == fps_n && (guint)info.fps_d == fps_d &&
((!::IsProgressiveTransport(format) &&
info.interlace_mode == GST_VIDEO_INTERLACE_MODE_INTERLEAVED) ||
(::IsProgressiveTransport(format) &&
info.interlace_mode == GST_VIDEO_INTERLACE_MODE_PROGRESSIVE)))
return format;
}
return NTV2_FORMAT_UNKNOWN;
}
GType gst_aja_audio_meta_api_get_type(void) {
static volatile GType type;
if (g_once_init_enter(&type)) {
static const gchar *tags[] = {NULL};
GType _type = gst_meta_api_type_register("GstAjaAudioMetaAPI", tags);
GST_INFO("registering");
g_once_init_leave(&type, _type);
}
return type;
}
static gboolean gst_aja_audio_meta_transform(GstBuffer *dest, GstMeta *meta,
GstBuffer *buffer, GQuark type,
gpointer data) {
GstAjaAudioMeta *dmeta, *smeta;
if (GST_META_TRANSFORM_IS_COPY(type)) {
smeta = (GstAjaAudioMeta *)meta;
GST_DEBUG("copy AJA audio metadata");
dmeta = gst_buffer_add_aja_audio_meta(dest, smeta->buffer);
if (!dmeta) return FALSE;
} else {
/* return FALSE, if transform type is not supported */
return FALSE;
}
return TRUE;
}
static gboolean gst_aja_audio_meta_init(GstMeta *meta, gpointer params,
GstBuffer *buffer) {
GstAjaAudioMeta *emeta = (GstAjaAudioMeta *)meta;
emeta->buffer = NULL;
return TRUE;
}
static void gst_aja_audio_meta_free(GstMeta *meta, GstBuffer *buffer) {
GstAjaAudioMeta *emeta = (GstAjaAudioMeta *)meta;
gst_buffer_replace(&emeta->buffer, NULL);
}
const GstMetaInfo *gst_aja_audio_meta_get_info(void) {
static const GstMetaInfo *meta_info = NULL;
if (g_once_init_enter((GstMetaInfo **)&meta_info)) {
const GstMetaInfo *mi = gst_meta_register(
GST_AJA_AUDIO_META_API_TYPE, "GstAjaAudioMeta", sizeof(GstAjaAudioMeta),
gst_aja_audio_meta_init, gst_aja_audio_meta_free,
gst_aja_audio_meta_transform);
g_once_init_leave((GstMetaInfo **)&meta_info, (GstMetaInfo *)mi);
}
return meta_info;
}
GstAjaAudioMeta *gst_buffer_add_aja_audio_meta(GstBuffer *buffer,
GstBuffer *audio_buffer) {
GstAjaAudioMeta *meta;
g_return_val_if_fail(buffer != NULL, NULL);
g_return_val_if_fail(audio_buffer != NULL, NULL);
meta = (GstAjaAudioMeta *)gst_buffer_add_meta(buffer, GST_AJA_AUDIO_META_INFO,
NULL);
meta->buffer = gst_buffer_ref(audio_buffer);
return meta;
}
typedef struct {
GstMemory mem;
guint8 *data;
} GstAjaMemory;
G_DEFINE_TYPE(GstAjaAllocator, gst_aja_allocator, GST_TYPE_ALLOCATOR);
static inline void _aja_memory_init(GstAjaAllocator *alloc, GstAjaMemory *mem,
GstMemoryFlags flags, GstMemory *parent,
gpointer data, gsize maxsize, gsize offset,
gsize size) {
gst_memory_init(GST_MEMORY_CAST(mem), flags, GST_ALLOCATOR(alloc), parent,
maxsize, 4095, offset, size);
mem->data = (guint8 *)data;
}
static inline GstAjaMemory *_aja_memory_new(GstAjaAllocator *alloc,
GstMemoryFlags flags,
GstAjaMemory *parent, gpointer data,
gsize maxsize, gsize offset,
gsize size) {
GstAjaMemory *mem;
mem = (GstAjaMemory *)g_slice_alloc(sizeof(GstAjaMemory));
_aja_memory_init(alloc, mem, flags, (GstMemory *)parent, data, maxsize,
offset, size);
return mem;
}
static GstAjaMemory *_aja_memory_new_block(GstAjaAllocator *alloc,
GstMemoryFlags flags, gsize maxsize,
gsize offset, gsize size) {
GstAjaMemory *mem;
guint8 *data;
mem = (GstAjaMemory *)g_slice_alloc(sizeof(GstAjaMemory));
data = (guint8 *)AJAMemory::AllocateAligned(maxsize, 4096);
GST_DEBUG_OBJECT(alloc, "Allocated %" G_GSIZE_FORMAT " at %p", maxsize, data);
if (!alloc->device->device->DMABufferLock((ULWord *)data, maxsize, true)) {
GST_WARNING_OBJECT(alloc, "Failed to pre-lock memory");
}
_aja_memory_init(alloc, mem, flags, NULL, data, maxsize, offset, size);
return mem;
}
static gpointer _aja_memory_map(GstAjaMemory *mem, gsize maxsize,
GstMapFlags flags) {
return mem->data;
}
static gboolean _aja_memory_unmap(GstAjaMemory *mem) { return TRUE; }
static GstMemory *_aja_memory_copy(GstAjaMemory *mem, gssize offset,
gsize size) {
GstMemory *copy;
GstMapInfo map;
if (size == (gsize)-1)
size = mem->mem.size > (gsize)offset ? mem->mem.size - offset : 0;
copy = gst_allocator_alloc(mem->mem.allocator, size, NULL);
gst_memory_map(copy, &map, GST_MAP_READ);
GST_DEBUG("memcpy %" G_GSIZE_FORMAT " memory %p -> %p", size, mem, copy);
memcpy(map.data, mem->data + mem->mem.offset + offset, size);
gst_memory_unmap(copy, &map);
return copy;
}
static GstAjaMemory *_aja_memory_share(GstAjaMemory *mem, gssize offset,
gsize size) {
GstAjaMemory *sub;
GstAjaMemory *parent;
/* find the real parent */
if ((parent = (GstAjaMemory *)mem->mem.parent) == NULL)
parent = (GstAjaMemory *)mem;
if (size == (gsize)-1) size = mem->mem.size - offset;
sub = _aja_memory_new(GST_AJA_ALLOCATOR(parent->mem.allocator),
(GstMemoryFlags)(GST_MINI_OBJECT_FLAGS(parent) |
GST_MINI_OBJECT_FLAG_LOCK_READONLY),
parent, parent->data, mem->mem.maxsize,
mem->mem.offset + offset, size);
return sub;
}
static GstMemory *gst_aja_allocator_alloc(GstAllocator *alloc, gsize size,
GstAllocationParams *params) {
g_warn_if_fail(params->prefix == 0);
g_warn_if_fail(params->padding == 0);
return (GstMemory *)_aja_memory_new_block(GST_AJA_ALLOCATOR(alloc),
params->flags, size, 0, size);
}
static void gst_aja_allocator_free(GstAllocator *alloc, GstMemory *mem) {
GstAjaMemory *dmem = (GstAjaMemory *)mem;
if (!mem->parent) {
GstAjaAllocator *aja_alloc = GST_AJA_ALLOCATOR(alloc);
GST_DEBUG_OBJECT(alloc, "Freeing memory at %p", dmem->data);
aja_alloc->device->device->DMABufferUnlock((ULWord *)dmem->data,
mem->maxsize);
AJAMemory::FreeAligned(dmem->data);
}
g_slice_free1(sizeof(GstAjaMemory), dmem);
}
static void gst_aja_allocator_finalize(GObject *alloc) {
GstAjaAllocator *aja_alloc = GST_AJA_ALLOCATOR(alloc);
GST_DEBUG_OBJECT(alloc, "Freeing allocator");
gst_aja_device_unref(aja_alloc->device);
G_OBJECT_CLASS(gst_aja_allocator_parent_class)->finalize(alloc);
}
static void gst_aja_allocator_class_init(GstAjaAllocatorClass *klass) {
GObjectClass *gobject_class;
GstAllocatorClass *allocator_class;
gobject_class = (GObjectClass *)klass;
allocator_class = (GstAllocatorClass *)klass;
gobject_class->finalize = gst_aja_allocator_finalize;
allocator_class->alloc = gst_aja_allocator_alloc;
allocator_class->free = gst_aja_allocator_free;
}
static void gst_aja_allocator_init(GstAjaAllocator *aja_alloc) {
GstAllocator *alloc = GST_ALLOCATOR_CAST(aja_alloc);
alloc->mem_type = GST_AJA_ALLOCATOR_MEMTYPE;
alloc->mem_map = (GstMemoryMapFunction)_aja_memory_map;
alloc->mem_unmap = (GstMemoryUnmapFunction)_aja_memory_unmap;
alloc->mem_copy = (GstMemoryCopyFunction)_aja_memory_copy;
alloc->mem_share = (GstMemoryShareFunction)_aja_memory_share;
}
GstAllocator *gst_aja_allocator_new(GstAjaDevice *device) {
GstAjaAllocator *alloc =
(GstAjaAllocator *)g_object_new(GST_TYPE_AJA_ALLOCATOR, NULL);
alloc->device = gst_aja_device_ref(device);
GST_DEBUG_OBJECT(alloc, "Creating allocator for device %d",
device->device->GetIndexNumber());
return GST_ALLOCATOR(alloc);
}
GstAjaDevice *gst_aja_device_obtain(const gchar *device_identifier) {
CNTV2Device *device = new CNTV2Device();
if (!CNTV2DeviceScanner::GetFirstDeviceFromArgument(device_identifier,
*device)) {
delete device;
return NULL;
}
GstAjaDevice *dev = g_atomic_rc_box_new0(GstAjaDevice);
dev->device = device;
return dev;
}
GstAjaDevice *gst_aja_device_ref(GstAjaDevice *device) {
return (GstAjaDevice *)g_atomic_rc_box_acquire(device);
}
void gst_aja_device_unref(GstAjaDevice *device) {
g_atomic_rc_box_release_full(device, [](gpointer data) {
GstAjaDevice *dev = (GstAjaDevice *)data;
delete dev->device;
});
}
static gpointer init_setup_mutex(gpointer data) {
sem_t *s = SEM_FAILED;
s = sem_open("/gstreamer-aja-sem", O_CREAT, S_IRUSR | S_IWUSR, 1);
if (s == SEM_FAILED) {
g_critical("Failed to create SHM semaphore for GStreamer AJA plugin: %s",
g_strerror(errno));
}
return s;
}
static sem_t *get_setup_mutex(void) {
static GOnce once = G_ONCE_INIT;
g_once(&once, init_setup_mutex, NULL);
return (sem_t *)once.retval;
}
ShmMutexLocker::ShmMutexLocker() {
sem_t *s = get_setup_mutex();
if (s != SEM_FAILED) sem_wait(s);
}
ShmMutexLocker::~ShmMutexLocker() {
sem_t *s = get_setup_mutex();
if (s != SEM_FAILED) sem_post(s);
}
GType gst_aja_audio_system_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_AUDIO_SYSTEM_AUTO, "auto", "Auto (based on selected channel)"},
{GST_AJA_AUDIO_SYSTEM_1, "1", "Audio system 1"},
{GST_AJA_AUDIO_SYSTEM_2, "2", "Audio system 2"},
{GST_AJA_AUDIO_SYSTEM_3, "3", "Audio system 3"},
{GST_AJA_AUDIO_SYSTEM_4, "4", "Audio system 4"},
{GST_AJA_AUDIO_SYSTEM_5, "5", "Audio system 5"},
{GST_AJA_AUDIO_SYSTEM_6, "6", "Audio system 6"},
{GST_AJA_AUDIO_SYSTEM_7, "7", "Audio system 7"},
{GST_AJA_AUDIO_SYSTEM_8, "8", "Audio system 8"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaAudioSystem", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_output_destination_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_OUTPUT_DESTINATION_AUTO, "auto",
"Auto (based on selected channel)"},
{GST_AJA_OUTPUT_DESTINATION_ANALOG, "analog", "Analog Output"},
{GST_AJA_OUTPUT_DESTINATION_SDI1, "sdi-1", "SDI Output 1"},
{GST_AJA_OUTPUT_DESTINATION_SDI2, "sdi-2", "SDI Output 2"},
{GST_AJA_OUTPUT_DESTINATION_SDI3, "sdi-3", "SDI Output 3"},
{GST_AJA_OUTPUT_DESTINATION_SDI4, "sdi-4", "SDI Output 4"},
{GST_AJA_OUTPUT_DESTINATION_SDI5, "sdi-5", "SDI Output 5"},
{GST_AJA_OUTPUT_DESTINATION_SDI6, "sdi-6", "SDI Output 6"},
{GST_AJA_OUTPUT_DESTINATION_SDI7, "sdi-7", "SDI Output 7"},
{GST_AJA_OUTPUT_DESTINATION_SDI8, "sdi-8", "SDI Output 8"},
{GST_AJA_OUTPUT_DESTINATION_HDMI, "hdmi", "HDMI Output"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaOutputDestination", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_reference_source_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_REFERENCE_SOURCE_AUTO, "auto", "Auto"},
{GST_AJA_REFERENCE_SOURCE_FREERUN, "freerun", "Freerun"},
{GST_AJA_REFERENCE_SOURCE_EXTERNAL, "external", "External"},
{GST_AJA_REFERENCE_SOURCE_INPUT_1, "input-1", "SDI Input 1"},
{GST_AJA_REFERENCE_SOURCE_INPUT_2, "input-2", "SDI Input 2"},
{GST_AJA_REFERENCE_SOURCE_INPUT_3, "input-3", "SDI Input 3"},
{GST_AJA_REFERENCE_SOURCE_INPUT_4, "input-4", "SDI Input 4"},
{GST_AJA_REFERENCE_SOURCE_INPUT_5, "input-5", "SDI Input 5"},
{GST_AJA_REFERENCE_SOURCE_INPUT_6, "input-6", "SDI Input 6"},
{GST_AJA_REFERENCE_SOURCE_INPUT_7, "input-7", "SDI Input 7"},
{GST_AJA_REFERENCE_SOURCE_INPUT_8, "input-8", "SDI Input 8"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaReferenceSource", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_input_source_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_INPUT_SOURCE_AUTO, "auto", "Auto (based on selected channel)"},
{GST_AJA_INPUT_SOURCE_ANALOG1, "analog-1", "Analog Input 1"},
{GST_AJA_INPUT_SOURCE_SDI1, "sdi-1", "SDI Input 1"},
{GST_AJA_INPUT_SOURCE_SDI2, "sdi-2", "SDI Input 2"},
{GST_AJA_INPUT_SOURCE_SDI3, "sdi-3", "SDI Input 3"},
{GST_AJA_INPUT_SOURCE_SDI4, "sdi-4", "SDI Input 4"},
{GST_AJA_INPUT_SOURCE_SDI5, "sdi-5", "SDI Input 5"},
{GST_AJA_INPUT_SOURCE_SDI6, "sdi-6", "SDI Input 6"},
{GST_AJA_INPUT_SOURCE_SDI7, "sdi-7", "SDI Input 7"},
{GST_AJA_INPUT_SOURCE_SDI8, "sdi-8", "SDI Input 8"},
{GST_AJA_INPUT_SOURCE_HDMI1, "hdmi-1", "HDMI Input 1"},
{GST_AJA_INPUT_SOURCE_HDMI2, "hdmi-2", "HDMI Input 2"},
{GST_AJA_INPUT_SOURCE_HDMI3, "hdmi-3", "HDMI Input 3"},
{GST_AJA_INPUT_SOURCE_HDMI4, "hdmi-4", "HDMI Input 4"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaInputSource", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_video_format_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
// TODO: Implement: {GST_AJA_VIDEO_FORMAT_AUTO, "auto", "Autodetect"},
{GST_AJA_VIDEO_FORMAT_1080i_5000, "1080i-5000", "1080i 5000"},
{GST_AJA_VIDEO_FORMAT_1080i_5994, "1080i-5994", "1080i 5994"},
{GST_AJA_VIDEO_FORMAT_1080i_6000, "1080i-6000", "1080i 6000"},
{GST_AJA_VIDEO_FORMAT_720p_5994, "720p-5994", "720p 5994"},
{GST_AJA_VIDEO_FORMAT_720p_6000, "720p-6000", "720p 6000"},
{GST_AJA_VIDEO_FORMAT_1080p_2997, "1080p-2997", "1080p 2997"},
{GST_AJA_VIDEO_FORMAT_1080p_3000, "1080p-3000", "1080p 3000"},
{GST_AJA_VIDEO_FORMAT_1080p_2500, "1080p-2500", "1080p 2500"},
{GST_AJA_VIDEO_FORMAT_1080p_2398, "1080p-2398", "1080p 2398"},
{GST_AJA_VIDEO_FORMAT_1080p_2400, "1080p-2400", "1080p 2400"},
{GST_AJA_VIDEO_FORMAT_720p_5000, "720p-5000", "720p 5000"},
{GST_AJA_VIDEO_FORMAT_720p_2398, "720p-2398", "720p 2398"},
{GST_AJA_VIDEO_FORMAT_720p_2500, "720p-2500", "720p 2500"},
{GST_AJA_VIDEO_FORMAT_1080p_5000_A, "1080p-5000-a", "1080p 5000 A"},
{GST_AJA_VIDEO_FORMAT_1080p_5994_A, "1080p-5994-a", "1080p 5994 A"},
{GST_AJA_VIDEO_FORMAT_1080p_6000_A, "1080p-6000-a", "1080p 6000 A"},
{GST_AJA_VIDEO_FORMAT_625_5000, "625-5000", "625 5000"},
{GST_AJA_VIDEO_FORMAT_525_5994, "525-5994", "525 5994"},
{GST_AJA_VIDEO_FORMAT_525_2398, "525-2398", "525 2398"},
{GST_AJA_VIDEO_FORMAT_525_2400, "525-2400", "525 2400"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaVideoFormat", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_audio_source_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_AUDIO_SOURCE_EMBEDDED, "embedded", "Embedded"},
{GST_AJA_AUDIO_SOURCE_AES, "aes", "AES"},
{GST_AJA_AUDIO_SOURCE_ANALOG, "analog", "Analog"},
{GST_AJA_AUDIO_SOURCE_HDMI, "hdmi", "HDMI"},
{GST_AJA_AUDIO_SOURCE_MIC, "mic", "Microphone"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaAudioSource", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
GType gst_aja_timecode_index_get_type(void) {
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_AJA_TIMECODE_INDEX_VITC, "vitc", "Embedded SDI VITC"},
{GST_AJA_TIMECODE_INDEX_VITC, "atc-ltc", "Embedded SDI ATC LTC"},
{GST_AJA_TIMECODE_INDEX_LTC1, "ltc-1", "Analog LTC 1"},
{GST_AJA_TIMECODE_INDEX_LTC2, "ltc-2", "Analog LTC 2"},
{0, NULL, NULL}};
if (g_once_init_enter(&id)) {
GType tmp = g_enum_register_static("GstAjaTimecodeIndex", modes);
g_once_init_leave(&id, tmp);
}
return (GType)id;
}
void gst_aja_common_init(void) {
GST_DEBUG_CATEGORY_INIT(gst_aja_debug, "aja", 0,
"Debug category for AJA plugin");
}
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