V4L/DVB: add memory-to-memory device helper framework for videobuf

[safe/jmp/linux-2.6] / include / media / videobuf-core.h

diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h
index 96949e3..f91a736 100644 (file)
--- a/include/media/videobuf-core.h
+++ b/include/media/videobuf-core.h
@@ -13,8 +13,12 @@
  * the Free Software Foundation; either version 2
  */
 
+#ifndef _VIDEOBUF_CORE_H
+#define _VIDEOBUF_CORE_H
+
 #include <linux/poll.h>
 #ifdef CONFIG_VIDEO_V4L1_COMPAT
+#define __MIN_V4L1
 #include <linux/videodev.h>
 #endif
 #include <linux/videodev2.h>
@@ -56,13 +60,13 @@ struct videobuf_mapping {
 };
 
 enum videobuf_state {
-       STATE_NEEDS_INIT = 0,
-       STATE_PREPARED   = 1,
-       STATE_QUEUED     = 2,
-       STATE_ACTIVE     = 3,
-       STATE_DONE       = 4,
-       STATE_ERROR      = 5,
-       STATE_IDLE       = 6,
+       VIDEOBUF_NEEDS_INIT = 0,
+       VIDEOBUF_PREPARED   = 1,
+       VIDEOBUF_QUEUED     = 2,
+       VIDEOBUF_ACTIVE     = 3,
+       VIDEOBUF_DONE       = 4,
+       VIDEOBUF_ERROR      = 5,
+       VIDEOBUF_IDLE       = 6,
 };
 
 struct videobuf_buffer {
@@ -123,35 +127,24 @@ struct videobuf_queue_ops {
 struct videobuf_qtype_ops {
        u32                     magic;
 
-       void* (*alloc)          (size_t size);
-       int (*iolock)           (struct videobuf_queue* q,
+       struct videobuf_buffer *(*alloc)(size_t size);
+       void *(*vaddr)          (struct videobuf_buffer *buf);
+       int (*iolock)           (struct videobuf_queue *q,
                                 struct videobuf_buffer *vb,
                                 struct v4l2_framebuffer *fbuf);
-       int (*mmap)             (struct videobuf_queue *q,
-                                unsigned int *count,
-                                unsigned int *size,
-                                enum v4l2_memory memory);
-       int (*sync)             (struct videobuf_queue* q,
+       int (*sync)             (struct videobuf_queue *q,
                                 struct videobuf_buffer *buf);
-       int (*copy_to_user)     (struct videobuf_queue *q,
-                                char __user *data,
-                                size_t count,
-                                int nonblocking);
-       int (*copy_stream)      (struct videobuf_queue *q,
-                                char __user *data,
-                                size_t count,
-                                size_t pos,
-                                int vbihack,
-                                int nonblocking);
-       int (*mmap_free)        (struct videobuf_queue *q);
        int (*mmap_mapper)      (struct videobuf_queue *q,
-                               struct vm_area_struct *vma);
+                                struct videobuf_buffer *buf,
+                                struct vm_area_struct *vma);
 };
 
 struct videobuf_queue {
-       struct mutex               lock;
+       struct mutex               vb_lock;
        spinlock_t                 *irqlock;
-       void                       *dev; /* on pci, points to struct pci_dev */
+       struct device              *dev;
+
+       wait_queue_head_t          wait; /* wait if queue is empty */
 
        enum v4l2_buf_type         type;
        unsigned int               inputs; /* for V4L2_BUF_FLAG_INPUT */
@@ -159,39 +152,42 @@ struct videobuf_queue {
        enum v4l2_field            field;
        enum v4l2_field            last;   /* for field=V4L2_FIELD_ALTERNATE */
        struct videobuf_buffer     *bufs[VIDEO_MAX_FRAME];
-       struct videobuf_queue_ops  *ops;
+       const struct videobuf_queue_ops  *ops;
        struct videobuf_qtype_ops  *int_ops;
 
+       unsigned int               streaming:1;
+       unsigned int               reading:1;
+
        /* capture via mmap() + ioctl(QBUF/DQBUF) */
-       unsigned int               streaming;
        struct list_head           stream;
 
        /* capture via read() */
-       unsigned int               reading;
        unsigned int               read_off;
        struct videobuf_buffer     *read_buf;
 
        /* driver private data */
        void                       *priv_data;
-
-       /*FIXME: should be removed after completing the vb conversion */
-       void                       *priv_ops;
 };
 
 int videobuf_waiton(struct videobuf_buffer *vb, int non_blocking, int intr);
-int videobuf_iolock(struct videobuf_queue* q, struct videobuf_buffer *vb,
+int videobuf_iolock(struct videobuf_queue *q, struct videobuf_buffer *vb,
                struct v4l2_framebuffer *fbuf);
 
-void *videobuf_alloc(struct videobuf_queue* q);
+struct videobuf_buffer *videobuf_alloc(struct videobuf_queue *q);
 
-void videobuf_queue_init(struct videobuf_queue *q,
-                        struct videobuf_queue_ops *ops,
-                        void *dev,
+/* Used on videobuf-dvb */
+void *videobuf_queue_to_vaddr(struct videobuf_queue *q,
+                             struct videobuf_buffer *buf);
+
+void videobuf_queue_core_init(struct videobuf_queue *q,
+                        const struct videobuf_queue_ops *ops,
+                        struct device *dev,
                         spinlock_t *irqlock,
                         enum v4l2_buf_type type,
                         enum v4l2_field field,
                         unsigned int msize,
-                        void *priv);
+                        void *priv,
+                        struct videobuf_qtype_ops *int_ops);
 int  videobuf_queue_is_busy(struct videobuf_queue *q);
 void videobuf_queue_cancel(struct videobuf_queue *q);
 
@@ -210,6 +206,8 @@ int videobuf_cgmbuf(struct videobuf_queue *q,
 int videobuf_streamon(struct videobuf_queue *q);
 int videobuf_streamoff(struct videobuf_queue *q);
 
+void videobuf_stop(struct videobuf_queue *q);
+
 int videobuf_read_start(struct videobuf_queue *q);
 void videobuf_read_stop(struct videobuf_queue *q);
 ssize_t videobuf_read_stream(struct videobuf_queue *q,
@@ -225,14 +223,11 @@ unsigned int videobuf_poll_stream(struct file *file,
 int videobuf_mmap_setup(struct videobuf_queue *q,
                        unsigned int bcount, unsigned int bsize,
                        enum v4l2_memory memory);
+int __videobuf_mmap_setup(struct videobuf_queue *q,
+                       unsigned int bcount, unsigned int bsize,
+                       enum v4l2_memory memory);
 int videobuf_mmap_free(struct videobuf_queue *q);
 int videobuf_mmap_mapper(struct videobuf_queue *q,
                         struct vm_area_struct *vma);
 
-/* --------------------------------------------------------------------- */
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
+#endif