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gstreamer/subprojects/gst-plugins-bad/sys/aja/gstajacommon.h
Xavier Claessens d86a6715e1 aja: Replace global semaphore with per-device flock() 
The global semaphore was never closed/unlinked, causing permission
denied issue if the device is later used by another user. Properly
removing the semaphore when stopping the pipeline would still leave it
open in case of a crash.

With a GStreamer specific name, it was also not preventing other apps to access
the device concurrently.

Finally, if the system has multiple cards, the lock should be per card
and not global (to be confirmed).

Fixes: #3283.

Sponsored-by: Netflix Inc.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6117>
2024-02-15 09:30:20 +00:00

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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 St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <ajabase/common/types.h>
#include <ajabase/system/memory.h>
#include <ajabase/system/thread.h>
#include <ajantv2/includes/ntv2card.h>
#include <ajantv2/includes/ntv2devicefeatures.h>
#include <ajantv2/includes/ntv2devicescanner.h>
#include <ajantv2/includes/ntv2enums.h>
#include <ajantv2/includes/ntv2signalrouter.h>
#include <gst/base/base.h>
#include <gst/gst.h>
#include <gst/video/video.h>
G_BEGIN_DECLS
typedef struct {
GstMeta meta;
GstBuffer *buffer;
} GstAjaAudioMeta;
G_GNUC_INTERNAL
GType gst_aja_audio_meta_api_get_type(void);
#define GST_AJA_AUDIO_META_API_TYPE (gst_aja_audio_meta_api_get_type())
G_GNUC_INTERNAL
const GstMetaInfo *gst_aja_audio_meta_get_info(void);
#define GST_AJA_AUDIO_META_INFO (gst_aja_audio_meta_get_info())
#define gst_buffer_get_aja_audio_meta(b) \
((GstAjaAudioMeta *)gst_buffer_get_meta((b), GST_AJA_AUDIO_META_API_TYPE))
G_GNUC_INTERNAL
GstAjaAudioMeta *gst_buffer_add_aja_audio_meta(GstBuffer *buffer,
GstBuffer *audio_buffer);
typedef struct {
CNTV2Card *device;
int fd;
} GstAjaNtv2Device;
G_GNUC_INTERNAL
GstAjaNtv2Device *gst_aja_ntv2_device_obtain(const gchar *device_identifier);
G_GNUC_INTERNAL
GstAjaNtv2Device *gst_aja_ntv2_device_ref(GstAjaNtv2Device *device);
G_GNUC_INTERNAL
void gst_aja_ntv2_device_unref(GstAjaNtv2Device *device);
G_GNUC_INTERNAL
gint gst_aja_ntv2_device_find_unallocated_frames(GstAjaNtv2Device *device,
NTV2Channel channel,
guint frame_count);
#define GST_AJA_ALLOCATOR_MEMTYPE "aja"
#define GST_TYPE_AJA_ALLOCATOR (gst_aja_allocator_get_type())
#define GST_AJA_ALLOCATOR(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AJA_ALLOCATOR, GstAjaAllocator))
#define GST_AJA_ALLOCATOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AJA_ALLOCATOR, \
GstAjaAllocatorClass))
#define GST_IS_Aja_ALLOCATOR(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AJA_ALLOCATOR))
#define GST_IS_Aja_ALLOCATOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AJA_ALLOCATOR))
#define GST_AJA_ALLOCATOR_CAST(obj) ((GstAjaAllocator *)(obj))
typedef struct _GstAjaAllocator GstAjaAllocator;
typedef struct _GstAjaAllocatorClass GstAjaAllocatorClass;
struct _GstAjaAllocator {
GstAllocator allocator;
GstAjaNtv2Device *device;
GstQueueArray *freed_mems;
};
struct _GstAjaAllocatorClass {
GstAllocatorClass parent_class;
};
G_GNUC_INTERNAL
GType gst_aja_allocator_get_type(void);
G_GNUC_INTERNAL
GstAllocator *gst_aja_allocator_new(GstAjaNtv2Device *device);
typedef enum {
GST_AJA_AUDIO_SYSTEM_AUTO,
GST_AJA_AUDIO_SYSTEM_1,
GST_AJA_AUDIO_SYSTEM_2,
GST_AJA_AUDIO_SYSTEM_3,
GST_AJA_AUDIO_SYSTEM_4,
GST_AJA_AUDIO_SYSTEM_5,
GST_AJA_AUDIO_SYSTEM_6,
GST_AJA_AUDIO_SYSTEM_7,
GST_AJA_AUDIO_SYSTEM_8,
} GstAjaAudioSystem;
#define GST_TYPE_AJA_AUDIO_SYSTEM (gst_aja_audio_system_get_type())
G_GNUC_INTERNAL
GType gst_aja_audio_system_get_type(void);
typedef enum {
GST_AJA_OUTPUT_DESTINATION_AUTO,
GST_AJA_OUTPUT_DESTINATION_ANALOG,
GST_AJA_OUTPUT_DESTINATION_SDI1,
GST_AJA_OUTPUT_DESTINATION_SDI2,
GST_AJA_OUTPUT_DESTINATION_SDI3,
GST_AJA_OUTPUT_DESTINATION_SDI4,
GST_AJA_OUTPUT_DESTINATION_SDI5,
GST_AJA_OUTPUT_DESTINATION_SDI6,
GST_AJA_OUTPUT_DESTINATION_SDI7,
GST_AJA_OUTPUT_DESTINATION_SDI8,
GST_AJA_OUTPUT_DESTINATION_HDMI,
} GstAjaOutputDestination;
#define GST_TYPE_AJA_OUTPUT_DESTINATION (gst_aja_output_destination_get_type())
G_GNUC_INTERNAL
GType gst_aja_output_destination_get_type(void);
typedef enum {
GST_AJA_REFERENCE_SOURCE_AUTO,
GST_AJA_REFERENCE_SOURCE_FREERUN,
GST_AJA_REFERENCE_SOURCE_EXTERNAL,
GST_AJA_REFERENCE_SOURCE_INPUT_1,
GST_AJA_REFERENCE_SOURCE_INPUT_2,
GST_AJA_REFERENCE_SOURCE_INPUT_3,
GST_AJA_REFERENCE_SOURCE_INPUT_4,
GST_AJA_REFERENCE_SOURCE_INPUT_5,
GST_AJA_REFERENCE_SOURCE_INPUT_6,
GST_AJA_REFERENCE_SOURCE_INPUT_7,
GST_AJA_REFERENCE_SOURCE_INPUT_8,
} GstAjaReferenceSource;
#define GST_TYPE_AJA_REFERENCE_SOURCE (gst_aja_reference_source_get_type())
G_GNUC_INTERNAL
GType gst_aja_reference_source_get_type(void);
typedef enum {
GST_AJA_INPUT_SOURCE_AUTO,
GST_AJA_INPUT_SOURCE_ANALOG1,
GST_AJA_INPUT_SOURCE_HDMI1,
GST_AJA_INPUT_SOURCE_HDMI2,
GST_AJA_INPUT_SOURCE_HDMI3,
GST_AJA_INPUT_SOURCE_HDMI4,
GST_AJA_INPUT_SOURCE_SDI1,
GST_AJA_INPUT_SOURCE_SDI2,
GST_AJA_INPUT_SOURCE_SDI3,
GST_AJA_INPUT_SOURCE_SDI4,
GST_AJA_INPUT_SOURCE_SDI5,
GST_AJA_INPUT_SOURCE_SDI6,
GST_AJA_INPUT_SOURCE_SDI7,
GST_AJA_INPUT_SOURCE_SDI8,
} GstAjaInputSource;
#define GST_TYPE_AJA_INPUT_SOURCE (gst_aja_input_source_get_type())
G_GNUC_INTERNAL
GType gst_aja_input_source_get_type(void);
typedef enum {
GST_AJA_SDI_MODE_SINGLE_LINK,
GST_AJA_SDI_MODE_QUAD_LINK_SQD,
GST_AJA_SDI_MODE_QUAD_LINK_TSI,
} GstAjaSdiMode;
#define GST_TYPE_AJA_SDI_MODE (gst_aja_sdi_mode_get_type())
G_GNUC_INTERNAL
GType gst_aja_sdi_mode_get_type(void);
typedef enum {
GST_AJA_VIDEO_FORMAT_INVALID = -1,
GST_AJA_VIDEO_FORMAT_AUTO,
GST_AJA_VIDEO_FORMAT_1080i_5000,
GST_AJA_VIDEO_FORMAT_1080i_5994,
GST_AJA_VIDEO_FORMAT_1080i_6000,
GST_AJA_VIDEO_FORMAT_720p_5994,
GST_AJA_VIDEO_FORMAT_720p_6000,
GST_AJA_VIDEO_FORMAT_1080psf_2398,
GST_AJA_VIDEO_FORMAT_1080psf_2400,
GST_AJA_VIDEO_FORMAT_1080p_2997,
GST_AJA_VIDEO_FORMAT_1080p_3000,
GST_AJA_VIDEO_FORMAT_1080p_2500,
GST_AJA_VIDEO_FORMAT_1080p_2398,
GST_AJA_VIDEO_FORMAT_1080p_2400,
GST_AJA_VIDEO_FORMAT_720p_5000,
GST_AJA_VIDEO_FORMAT_1080p_5000_A,
GST_AJA_VIDEO_FORMAT_1080p_5994_A,
GST_AJA_VIDEO_FORMAT_1080p_6000_A,
GST_AJA_VIDEO_FORMAT_720p_2398,
GST_AJA_VIDEO_FORMAT_720p_2500,
GST_AJA_VIDEO_FORMAT_1080psf_2500_2,
GST_AJA_VIDEO_FORMAT_1080psf_2997_2,
GST_AJA_VIDEO_FORMAT_1080psf_3000_2,
GST_AJA_VIDEO_FORMAT_625_5000,
GST_AJA_VIDEO_FORMAT_525_5994,
GST_AJA_VIDEO_FORMAT_525_2398,
GST_AJA_VIDEO_FORMAT_525_2400,
GST_AJA_VIDEO_FORMAT_1080p_DCI_2398,
GST_AJA_VIDEO_FORMAT_1080p_DCI_2400,
GST_AJA_VIDEO_FORMAT_1080p_DCI_2500,
GST_AJA_VIDEO_FORMAT_1080p_DCI_2997,
GST_AJA_VIDEO_FORMAT_1080p_DCI_3000,
GST_AJA_VIDEO_FORMAT_1080p_DCI_5000_A,
GST_AJA_VIDEO_FORMAT_1080p_DCI_5994_A,
GST_AJA_VIDEO_FORMAT_1080p_DCI_6000_A,
GST_AJA_VIDEO_FORMAT_2160p_2398,
GST_AJA_VIDEO_FORMAT_2160p_2400,
GST_AJA_VIDEO_FORMAT_2160p_2500,
GST_AJA_VIDEO_FORMAT_2160p_2997,
GST_AJA_VIDEO_FORMAT_2160p_3000,
GST_AJA_VIDEO_FORMAT_2160p_5000,
GST_AJA_VIDEO_FORMAT_2160p_5994,
GST_AJA_VIDEO_FORMAT_2160p_6000,
GST_AJA_VIDEO_FORMAT_2160p_DCI_2398,
GST_AJA_VIDEO_FORMAT_2160p_DCI_2400,
GST_AJA_VIDEO_FORMAT_2160p_DCI_2500,
GST_AJA_VIDEO_FORMAT_2160p_DCI_2997,
GST_AJA_VIDEO_FORMAT_2160p_DCI_3000,
GST_AJA_VIDEO_FORMAT_2160p_DCI_5000,
GST_AJA_VIDEO_FORMAT_2160p_DCI_5994,
GST_AJA_VIDEO_FORMAT_2160p_DCI_6000,
GST_AJA_VIDEO_FORMAT_4320p_2398,
GST_AJA_VIDEO_FORMAT_4320p_2400,
GST_AJA_VIDEO_FORMAT_4320p_2500,
GST_AJA_VIDEO_FORMAT_4320p_2997,
GST_AJA_VIDEO_FORMAT_4320p_3000,
GST_AJA_VIDEO_FORMAT_4320p_5000,
GST_AJA_VIDEO_FORMAT_4320p_5994,
GST_AJA_VIDEO_FORMAT_4320p_6000,
GST_AJA_VIDEO_FORMAT_4320p_DCI_2398,
GST_AJA_VIDEO_FORMAT_4320p_DCI_2400,
GST_AJA_VIDEO_FORMAT_4320p_DCI_2500,
GST_AJA_VIDEO_FORMAT_4320p_DCI_2997,
GST_AJA_VIDEO_FORMAT_4320p_DCI_3000,
GST_AJA_VIDEO_FORMAT_4320p_DCI_5000,
GST_AJA_VIDEO_FORMAT_4320p_DCI_5994,
GST_AJA_VIDEO_FORMAT_4320p_DCI_6000,
} GstAjaVideoFormat;
#define GST_TYPE_AJA_VIDEO_FORMAT (gst_aja_video_format_get_type())
G_GNUC_INTERNAL
GType gst_aja_video_format_get_type(void);
typedef enum {
GST_AJA_AUDIO_SOURCE_EMBEDDED,
GST_AJA_AUDIO_SOURCE_AES,
GST_AJA_AUDIO_SOURCE_ANALOG,
GST_AJA_AUDIO_SOURCE_HDMI,
GST_AJA_AUDIO_SOURCE_MIC,
} GstAjaAudioSource;
#define GST_TYPE_AJA_AUDIO_SOURCE (gst_aja_audio_source_get_type())
G_GNUC_INTERNAL
GType gst_aja_audio_source_get_type(void);
typedef enum {
GST_AJA_EMBEDDED_AUDIO_INPUT_AUTO,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO1,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO2,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO3,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO4,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO5,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO6,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO7,
GST_AJA_EMBEDDED_AUDIO_INPUT_VIDEO8,
} GstAjaEmbeddedAudioInput;
#define GST_TYPE_AJA_EMBEDDED_AUDIO_INPUT \
(gst_aja_embedded_audio_input_get_type())
G_GNUC_INTERNAL
GType gst_aja_embedded_audio_input_get_type(void);
typedef enum {
GST_AJA_TIMECODE_INDEX_VITC,
GST_AJA_TIMECODE_INDEX_ATC_LTC,
GST_AJA_TIMECODE_INDEX_LTC1,
GST_AJA_TIMECODE_INDEX_LTC2,
} GstAjaTimecodeIndex;
#define GST_TYPE_AJA_TIMECODE_INDEX (gst_aja_timecode_index_get_type())
G_GNUC_INTERNAL
GType gst_aja_timecode_index_get_type(void);
typedef enum {
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_CEA708_AND_CEA608,
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_CEA708_OR_CEA608,
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_CEA608_OR_CEA708,
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_CEA708_ONLY,
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_CEA608_ONLY,
GST_AJA_CLOSED_CAPTION_CAPTURE_MODE_NONE,
} GstAjaClosedCaptionCaptureMode;
#define GST_TYPE_AJA_CLOSED_CAPTION_CAPTURE_MODE \
(gst_aja_closed_caption_capture_mode_get_type())
G_GNUC_INTERNAL
GType gst_aja_closed_caption_capture_mode_get_type(void);
G_GNUC_INTERNAL
void gst_aja_common_init(void);
G_END_DECLS
class GstAjaNtv2DeviceLocker {
public:
GstAjaNtv2DeviceLocker(GstAjaNtv2Device *device);
~GstAjaNtv2DeviceLocker();
private:
GstAjaNtv2Device *_device;
};
G_GNUC_INTERNAL
GstCaps *gst_ntv2_supported_caps(NTV2DeviceID device_id);
G_GNUC_INTERNAL
GstCaps *gst_ntv2_video_format_to_caps(NTV2VideoFormat format);
G_GNUC_INTERNAL
bool gst_video_info_from_ntv2_video_format(GstVideoInfo *info,
NTV2VideoFormat format);
G_GNUC_INTERNAL
NTV2VideoFormat gst_ntv2_video_format_from_caps(const GstCaps *caps, bool quad);
G_GNUC_INTERNAL
GstCaps *gst_aja_video_format_to_caps(GstAjaVideoFormat format);
G_GNUC_INTERNAL
bool gst_video_info_from_aja_video_format(GstVideoInfo *info,
GstAjaVideoFormat format);
G_GNUC_INTERNAL
GstAjaVideoFormat gst_aja_video_format_from_caps(const GstCaps *caps);
G_GNUC_INTERNAL
GstAjaVideoFormat gst_aja_video_format_from_ntv2_format(NTV2VideoFormat format);
G_GNUC_INTERNAL
NTV2VideoFormat gst_ntv2_video_format_from_aja_format(GstAjaVideoFormat format,
bool quad);
G_GNUC_INTERNAL
bool gst_ntv2_video_format_is_quad(NTV2VideoFormat format);
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