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2160239548
The Cedrus driver would otherwise choose 1KB buffer, which is too small. This follows what some drivers do, which is simply to use the size a packed raw image would have. Specifications do not really guaranty any minimum compression ratio. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1268>
132 lines
6 KiB
C
132 lines
6 KiB
C
/* GStreamer
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* Copyright (C) 2020 Nicolas Dufresne <nicolas.dufresne@collabora.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_V4L2_DECODER_H__
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#define __GST_V4L2_DECODER_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include "gstv4l2codecdevice.h"
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#include "linux/videodev2.h"
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_DECODER gst_v4l2_decoder_get_type ()
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G_DECLARE_FINAL_TYPE (GstV4l2Decoder, gst_v4l2_decoder, GST, V4L2_DECODER, GstObject);
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typedef struct _GstV4l2Request GstV4l2Request;
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GstV4l2Decoder * gst_v4l2_decoder_new (GstV4l2CodecDevice * device);
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gboolean gst_v4l2_decoder_open (GstV4l2Decoder * decoder);
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gboolean gst_v4l2_decoder_close (GstV4l2Decoder * decoder);
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gboolean gst_v4l2_decoder_streamon (GstV4l2Decoder * self,
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GstPadDirection direction);
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gboolean gst_v4l2_decoder_streamoff (GstV4l2Decoder * self,
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GstPadDirection direction);
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gboolean gst_v4l2_decoder_flush (GstV4l2Decoder * self);
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gboolean gst_v4l2_decoder_enum_sink_fmt (GstV4l2Decoder * self,
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gint i, guint32 * out_fmt);
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gboolean gst_v4l2_decoder_set_sink_fmt (GstV4l2Decoder * self, guint32 fmt,
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gint width, gint height,
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gint pixel_bitdepth);
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GstCaps * gst_v4l2_decoder_enum_src_formats (GstV4l2Decoder * self);
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gboolean gst_v4l2_decoder_select_src_format (GstV4l2Decoder * self,
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GstCaps * caps,
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GstVideoInfo * info);
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gint gst_v4l2_decoder_request_buffers (GstV4l2Decoder * self,
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GstPadDirection direction,
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guint num_buffers);
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gboolean gst_v4l2_decoder_export_buffer (GstV4l2Decoder * self,
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GstPadDirection directon,
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gint index,
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gint * fds,
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gsize * sizes,
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gsize * offsets,
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guint *num_fds);
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gboolean gst_v4l2_decoder_queue_sink_mem (GstV4l2Decoder * self,
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GstV4l2Request * request,
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GstMemory * mem,
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guint32 frame_num,
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gsize bytesused,
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guint flags);
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gboolean gst_v4l2_decoder_dequeue_sink (GstV4l2Decoder * self);
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gboolean gst_v4l2_decoder_queue_src_buffer (GstV4l2Decoder * self,
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GstBuffer * buffer,
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guint32 frame_num);
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gboolean gst_v4l2_decoder_dequeue_src (GstV4l2Decoder * self,
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guint32 *out_frame_num);
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gboolean gst_v4l2_decoder_set_controls (GstV4l2Decoder * self,
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GstV4l2Request * request,
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struct v4l2_ext_control *control,
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guint count);
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gboolean gst_v4l2_decoder_get_controls (GstV4l2Decoder * self,
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struct v4l2_ext_control * control,
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guint count);
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void gst_v4l2_decoder_install_properties (GObjectClass * gobject_class,
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gint prop_offset,
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GstV4l2CodecDevice * device);
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void gst_v4l2_decoder_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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void gst_v4l2_decoder_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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void gst_v4l2_decoder_register (GstPlugin * plugin,
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GType dec_type,
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GClassInitFunc class_init,
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GInstanceInitFunc instance_init,
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const gchar *element_name_tmpl,
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GstV4l2CodecDevice * device,
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guint rank);
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GstV4l2Request *gst_v4l2_decoder_alloc_request (GstV4l2Decoder * self);
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void gst_v4l2_request_free (GstV4l2Request * request);
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gboolean gst_v4l2_request_queue (GstV4l2Request * request);
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gint gst_v4l2_request_poll (GstV4l2Request * request, GstClockTime timeout);
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void gst_v4l2_request_set_done (GstV4l2Request * request);
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gboolean gst_v4l2_request_is_done (GstV4l2Request * request);
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G_END_DECLS
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#endif /* __GST_V4L2_DECODER_H__ */
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