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ac3cb8817e
Offset are relative to the buffer and there is no guarantee substracting them will give us the plane size. So we let bufferpool make the math as it is more aware of video info than allocator and pass a size array to allocator import function. Pointed out by Nicolas Dufresne <nicolas.dufresne@collabora.com> https://bugzilla.gnome.org/show_bug.cgi?id=738013
158 lines
6 KiB
C
158 lines
6 KiB
C
/*
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* Copyright (C) 2014 Collabora Ltd.
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* Author: 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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*/
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#ifndef __GST_V4L2_ALLOCATOR_H__
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#define __GST_V4L2_ALLOCATOR_H__
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#include "ext/videodev2.h"
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#include <gst/gst.h>
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#include <gst/gstatomicqueue.h>
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_ALLOCATOR (gst_v4l2_allocator_get_type())
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#define GST_IS_V4L2_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_ALLOCATOR))
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#define GST_IS_V4L2_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_ALLOCATOR))
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#define GST_V4L2_ALLOCATOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_V4L2_ALLOCATOR, GstV4l2AllocatorClass))
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#define GST_V4L2_ALLOCATOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_ALLOCATOR, GstV4l2Allocator))
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#define GST_V4L2_ALLOCATOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_ALLOCATOR, GstV4l2AllocatorClass))
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#define GST_V4L2_ALLOCATOR_CAST(obj) ((GstV4l2Allocator *)(obj))
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#define GST_V4L2_ALLOCATOR_CAN_REQUEST(obj,type) \
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(GST_OBJECT_FLAG_IS_SET (obj, GST_V4L2_ALLOCATOR_FLAG_ ## type ## _REQBUFS))
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#define GST_V4L2_ALLOCATOR_CAN_ALLOCATE(obj,type) \
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(GST_OBJECT_FLAG_IS_SET (obj, GST_V4L2_ALLOCATOR_FLAG_ ## type ## _CREATE_BUFS))
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#define GST_V4L2_MEMORY_QUARK gst_v4l2_memory_quark ()
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typedef struct _GstV4l2Allocator GstV4l2Allocator;
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typedef struct _GstV4l2AllocatorClass GstV4l2AllocatorClass;
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typedef struct _GstV4l2MemoryGroup GstV4l2MemoryGroup;
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typedef struct _GstV4l2Memory GstV4l2Memory;
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typedef enum _GstV4l2Capabilities GstV4l2Capabilities;
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typedef enum _GstV4l2Return GstV4l2Return;
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enum _GstV4l2AllocatorFlags
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{
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GST_V4L2_ALLOCATOR_FLAG_MMAP_REQBUFS = (GST_ALLOCATOR_FLAG_LAST << 0),
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GST_V4L2_ALLOCATOR_FLAG_MMAP_CREATE_BUFS = (GST_ALLOCATOR_FLAG_LAST << 1),
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GST_V4L2_ALLOCATOR_FLAG_USERPTR_REQBUFS = (GST_ALLOCATOR_FLAG_LAST << 2),
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GST_V4L2_ALLOCATOR_FLAG_USERPTR_CREATE_BUFS = (GST_ALLOCATOR_FLAG_LAST << 3),
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GST_V4L2_ALLOCATOR_FLAG_DMABUF_REQBUFS = (GST_ALLOCATOR_FLAG_LAST << 4),
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GST_V4L2_ALLOCATOR_FLAG_DMABUF_CREATE_BUFS = (GST_ALLOCATOR_FLAG_LAST << 5),
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};
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enum _GstV4l2Return
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{
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GST_V4L2_OK = 0,
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GST_V4L2_ERROR = -1,
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GST_V4L2_BUSY = -2
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};
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struct _GstV4l2Memory
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{
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GstMemory mem;
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gint plane;
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GstV4l2MemoryGroup *group;
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gpointer data;
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gint dmafd;
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};
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struct _GstV4l2MemoryGroup
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{
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gint n_mem;
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GstMemory * mem[VIDEO_MAX_PLANES];
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gint mems_allocated;
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struct v4l2_buffer buffer;
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struct v4l2_plane planes[VIDEO_MAX_PLANES];
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};
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struct _GstV4l2Allocator
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{
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GstAllocator parent;
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gint video_fd;
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guint32 count;
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guint32 type;
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guint32 memory;
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struct v4l2_format format;
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gboolean can_allocate;
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gboolean active;
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GstV4l2MemoryGroup * groups[VIDEO_MAX_FRAME];
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GstAtomicQueue *free_queue;
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GstAtomicQueue *pending_queue;
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};
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struct _GstV4l2AllocatorClass {
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GstAllocatorClass parent_class;
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};
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GType gst_v4l2_allocator_get_type(void);
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gboolean gst_is_v4l2_memory (GstMemory * mem);
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GQuark gst_v4l2_memory_quark (void);
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gboolean gst_v4l2_allocator_is_active (GstV4l2Allocator * allocator);
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guint gst_v4l2_allocator_get_size (GstV4l2Allocator * allocator);
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GstV4l2Allocator* gst_v4l2_allocator_new (GstObject *parent, gint video_fd,
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struct v4l2_format * format);
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guint gst_v4l2_allocator_start (GstV4l2Allocator * allocator,
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guint32 count, guint32 memory);
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GstV4l2Return gst_v4l2_allocator_stop (GstV4l2Allocator * allocator);
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GstV4l2MemoryGroup* gst_v4l2_allocator_alloc_mmap (GstV4l2Allocator * allocator);
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GstV4l2MemoryGroup* gst_v4l2_allocator_alloc_dmabuf (GstV4l2Allocator * allocator,
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GstAllocator * dmabuf_allocator);
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GstV4l2MemoryGroup * gst_v4l2_allocator_alloc_dmabufin (GstV4l2Allocator * allocator);
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GstV4l2MemoryGroup * gst_v4l2_allocator_alloc_userptr (GstV4l2Allocator * allocator);
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gboolean gst_v4l2_allocator_import_dmabuf (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup *group,
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gint n_mem, GstMemory ** dma_mem);
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gboolean gst_v4l2_allocator_import_userptr (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup *group,
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gsize img_size, int n_planes,
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gpointer * data, gsize * size);
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void gst_v4l2_allocator_flush (GstV4l2Allocator * allocator);
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gboolean gst_v4l2_allocator_qbuf (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group);
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GstV4l2MemoryGroup* gst_v4l2_allocator_dqbuf (GstV4l2Allocator * allocator);
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void gst_v4l2_allocator_reset_group (GstV4l2Allocator * allocator,
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GstV4l2MemoryGroup * group);
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G_END_DECLS
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#endif /* __GST_V4L2_ALLOCATOR_H__ */
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