gstreamer/subprojects/gst-plugins-bad/sys/applemedia/vtenc.h
Nirbheek Chauhan 4207b4e281 vtenc: Add support for constant bitrate encoding
Only supported on macOS 13.0+ and iOS 16.0+ on Apple Silicon.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7232>
2024-07-30 12:42:17 +00:00

119 lines
3.1 KiB
C

/*
* Copyright (C) 2010 Ole André Vadla Ravnås <oleavr@soundrop.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.
*/
#ifndef __GST_VTENC_H__
#define __GST_VTENC_H__
#include <gst/gst.h>
#include <gst/base/gstqueuearray.h>
#include <gst/codecparsers/gsth264parser.h>
#include <gst/video/video.h>
#include <VideoToolbox/VideoToolbox.h>
G_BEGIN_DECLS
#define GST_VTENC_CAST(obj) \
((GstVTEnc *) (obj))
#define GST_VTENC_CLASS_GET_CODEC_DETAILS(klass) \
((const GstVTEncoderDetails *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass), \
GST_VTENC_CODEC_DETAILS_QDATA))
/**
* GstVtencRateControl:
* @GST_VTENC_RATE_CONTROL_ABR: average (variable) bitrate
* @GST_VTENC_RATE_CONTROL_CBR: constant bitrate
*
* Since: 1.26
*/
typedef enum
{
GST_VTENC_RATE_CONTROL_ABR,
GST_VTENC_RATE_CONTROL_CBR,
} GstVtencRateControl;
typedef struct _GstVTEncoderDetails GstVTEncoderDetails;
typedef struct _GstVTEncClassParams GstVTEncClassParams;
typedef struct _GstVTEncClass GstVTEncClass;
typedef struct _GstVTEnc GstVTEnc;
struct _GstVTEncoderDetails
{
const gchar * name;
const gchar * element_name;
const gchar * mimetype;
CMVideoCodecType format_id;
gboolean require_hardware;
};
struct _GstVTEncClass
{
GstVideoEncoderClass parent_class;
};
struct _GstVTEnc
{
GstVideoEncoder parent;
const GstVTEncoderDetails * details;
CMVideoCodecType specific_format_id;
CFStringRef profile_level;
GstH264Profile h264_profile;
guint bitrate;
gboolean allow_frame_reordering;
gboolean realtime;
gdouble quality;
gint max_keyframe_interval;
GstClockTime max_keyframe_interval_duration;
gint latency_frames;
gboolean preserve_alpha;
GstVtencRateControl rate_control;
gboolean dump_properties;
gboolean dump_attributes;
gboolean have_field_order;
GstVideoCodecState *input_state;
GstVideoInfo video_info;
VTCompressionSessionRef session;
CFDictionaryRef keyframe_props;
GstClockTime dts_offset;
GstVecDeque * output_queue;
/* Protects output_queue, is_flushing and pause_task */
GMutex queue_mutex;
GCond queue_cond;
/* Temporary workaround for HEVCWithAlpha encoder not throttling input */
GMutex encoding_mutex;
GCond encoding_cond;
/* downstream_ret is protected by the STREAM_LOCK */
GstFlowReturn downstream_ret;
gboolean negotiate_downstream;
gboolean is_flushing;
gboolean pause_task;
};
void gst_vtenc_register_elements (GstPlugin * plugin);
G_END_DECLS
#endif /* __GST_VTENC_H__ */