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Diffstat (limited to 'drivers/media/video/videocodec.c')
-rw-r--r--drivers/media/video/videocodec.c408
1 files changed, 0 insertions, 408 deletions
diff --git a/drivers/media/video/videocodec.c b/drivers/media/video/videocodec.c
deleted file mode 100644
index cf24956f320..00000000000
--- a/drivers/media/video/videocodec.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * VIDEO MOTION CODECs internal API for video devices
- *
- * Interface for MJPEG (and maybe later MPEG/WAVELETS) codec's
- * bound to a master device.
- *
- * (c) 2002 Wolfgang Scherr <scherr@net4you.at>
- *
- * $Id: videocodec.c,v 1.1.2.8 2003/03/29 07:16:04 rbultje Exp $
- *
- * ------------------------------------------------------------------------
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * ------------------------------------------------------------------------
- */
-
-#define VIDEOCODEC_VERSION "v0.2"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-
-// kernel config is here (procfs flag)
-
-#ifdef CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <asm/uaccess.h>
-#endif
-
-#include "videocodec.h"
-
-static int debug;
-module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "Debug level (0-4)");
-
-#define dprintk(num, format, args...) \
- do { \
- if (debug >= num) \
- printk(format, ##args); \
- } while (0)
-
-struct attached_list {
- struct videocodec *codec;
- struct attached_list *next;
-};
-
-struct codec_list {
- const struct videocodec *codec;
- int attached;
- struct attached_list *list;
- struct codec_list *next;
-};
-
-static struct codec_list *codeclist_top = NULL;
-
-/* ================================================= */
-/* function prototypes of the master/slave interface */
-/* ================================================= */
-
-struct videocodec *
-videocodec_attach (struct videocodec_master *master)
-{
- struct codec_list *h = codeclist_top;
- struct attached_list *a, *ptr;
- struct videocodec *codec;
- int res;
-
- if (!master) {
- dprintk(1, KERN_ERR "videocodec_attach: no data\n");
- return NULL;
- }
-
- dprintk(2,
- "videocodec_attach: '%s', flags %lx, magic %lx\n",
- master->name, master->flags, master->magic);
-
- if (!h) {
- dprintk(1,
- KERN_ERR
- "videocodec_attach: no device available\n");
- return NULL;
- }
-
- while (h) {
- // attach only if the slave has at least the flags
- // expected by the master
- if ((master->flags & h->codec->flags) == master->flags) {
- dprintk(4, "videocodec_attach: try '%s'\n",
- h->codec->name);
-
- if (!try_module_get(h->codec->owner))
- return NULL;
-
- codec =
- kmalloc(sizeof(struct videocodec), GFP_KERNEL);
- if (!codec) {
- dprintk(1,
- KERN_ERR
- "videocodec_attach: no mem\n");
- goto out_module_put;
- }
- memcpy(codec, h->codec, sizeof(struct videocodec));
-
- snprintf(codec->name, sizeof(codec->name),
- "%s[%d]", codec->name, h->attached);
- codec->master_data = master;
- res = codec->setup(codec);
- if (res == 0) {
- dprintk(3, "videocodec_attach '%s'\n",
- codec->name);
- ptr = kzalloc(sizeof(struct attached_list), GFP_KERNEL);
- if (!ptr) {
- dprintk(1,
- KERN_ERR
- "videocodec_attach: no memory\n");
- goto out_kfree;
- }
- ptr->codec = codec;
-
- a = h->list;
- if (!a) {
- h->list = ptr;
- dprintk(4,
- "videocodec: first element\n");
- } else {
- while (a->next)
- a = a->next; // find end
- a->next = ptr;
- dprintk(4,
- "videocodec: in after '%s'\n",
- h->codec->name);
- }
-
- h->attached += 1;
- return codec;
- } else {
- kfree(codec);
- }
- }
- h = h->next;
- }
-
- dprintk(1, KERN_ERR "videocodec_attach: no codec found!\n");
- return NULL;
-
- out_module_put:
- module_put(h->codec->owner);
- out_kfree:
- kfree(codec);
- return NULL;
-}
-
-int
-videocodec_detach (struct videocodec *codec)
-{
- struct codec_list *h = codeclist_top;
- struct attached_list *a, *prev;
- int res;
-
- if (!codec) {
- dprintk(1, KERN_ERR "videocodec_detach: no data\n");
- return -EINVAL;
- }
-
- dprintk(2,
- "videocodec_detach: '%s', type: %x, flags %lx, magic %lx\n",
- codec->name, codec->type, codec->flags, codec->magic);
-
- if (!h) {
- dprintk(1,
- KERN_ERR "videocodec_detach: no device left...\n");
- return -ENXIO;
- }
-
- while (h) {
- a = h->list;
- prev = NULL;
- while (a) {
- if (codec == a->codec) {
- res = a->codec->unset(a->codec);
- if (res >= 0) {
- dprintk(3,
- "videocodec_detach: '%s'\n",
- a->codec->name);
- a->codec->master_data = NULL;
- } else {
- dprintk(1,
- KERN_ERR
- "videocodec_detach: '%s'\n",
- a->codec->name);
- a->codec->master_data = NULL;
- }
- if (prev == NULL) {
- h->list = a->next;
- dprintk(4,
- "videocodec: delete first\n");
- } else {
- prev->next = a->next;
- dprintk(4,
- "videocodec: delete middle\n");
- }
- module_put(a->codec->owner);
- kfree(a->codec);
- kfree(a);
- h->attached -= 1;
- return 0;
- }
- prev = a;
- a = a->next;
- }
- h = h->next;
- }
-
- dprintk(1, KERN_ERR "videocodec_detach: given codec not found!\n");
- return -EINVAL;
-}
-
-int
-videocodec_register (const struct videocodec *codec)
-{
- struct codec_list *ptr, *h = codeclist_top;
-
- if (!codec) {
- dprintk(1, KERN_ERR "videocodec_register: no data!\n");
- return -EINVAL;
- }
-
- dprintk(2,
- "videocodec: register '%s', type: %x, flags %lx, magic %lx\n",
- codec->name, codec->type, codec->flags, codec->magic);
-
- ptr = kzalloc(sizeof(struct codec_list), GFP_KERNEL);
- if (!ptr) {
- dprintk(1, KERN_ERR "videocodec_register: no memory\n");
- return -ENOMEM;
- }
- ptr->codec = codec;
-
- if (!h) {
- codeclist_top = ptr;
- dprintk(4, "videocodec: hooked in as first element\n");
- } else {
- while (h->next)
- h = h->next; // find the end
- h->next = ptr;
- dprintk(4, "videocodec: hooked in after '%s'\n",
- h->codec->name);
- }
-
- return 0;
-}
-
-int
-videocodec_unregister (const struct videocodec *codec)
-{
- struct codec_list *prev = NULL, *h = codeclist_top;
-
- if (!codec) {
- dprintk(1, KERN_ERR "videocodec_unregister: no data!\n");
- return -EINVAL;
- }
-
- dprintk(2,
- "videocodec: unregister '%s', type: %x, flags %lx, magic %lx\n",
- codec->name, codec->type, codec->flags, codec->magic);
-
- if (!h) {
- dprintk(1,
- KERN_ERR
- "videocodec_unregister: no device left...\n");
- return -ENXIO;
- }
-
- while (h) {
- if (codec == h->codec) {
- if (h->attached) {
- dprintk(1,
- KERN_ERR
- "videocodec: '%s' is used\n",
- h->codec->name);
- return -EBUSY;
- }
- dprintk(3, "videocodec: unregister '%s' is ok.\n",
- h->codec->name);
- if (prev == NULL) {
- codeclist_top = h->next;
- dprintk(4,
- "videocodec: delete first element\n");
- } else {
- prev->next = h->next;
- dprintk(4,
- "videocodec: delete middle element\n");
- }
- kfree(h);
- return 0;
- }
- prev = h;
- h = h->next;
- }
-
- dprintk(1,
- KERN_ERR
- "videocodec_unregister: given codec not found!\n");
- return -EINVAL;
-}
-
-#ifdef CONFIG_PROC_FS
-static int proc_videocodecs_show(struct seq_file *m, void *v)
-{
- struct codec_list *h = codeclist_top;
- struct attached_list *a;
-
- seq_printf(m, "<S>lave or attached <M>aster name type flags magic ");
- seq_printf(m, "(connected as)\n");
-
- h = codeclist_top;
- while (h) {
- seq_printf(m, "S %32s %04x %08lx %08lx (TEMPLATE)\n",
- h->codec->name, h->codec->type,
- h->codec->flags, h->codec->magic);
- a = h->list;
- while (a) {
- seq_printf(m, "M %32s %04x %08lx %08lx (%s)\n",
- a->codec->master_data->name,
- a->codec->master_data->type,
- a->codec->master_data->flags,
- a->codec->master_data->magic,
- a->codec->name);
- a = a->next;
- }
- h = h->next;
- }
-
- return 0;
-}
-
-static int proc_videocodecs_open(struct inode *inode, struct file *file)
-{
- return single_open(file, proc_videocodecs_show, NULL);
-}
-
-static const struct file_operations videocodecs_proc_fops = {
- .owner = THIS_MODULE,
- .open = proc_videocodecs_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-#endif
-
-/* ===================== */
-/* hook in driver module */
-/* ===================== */
-static int __init
-videocodec_init (void)
-{
-#ifdef CONFIG_PROC_FS
- static struct proc_dir_entry *videocodec_proc_entry;
-#endif
-
- printk(KERN_INFO "Linux video codec intermediate layer: %s\n",
- VIDEOCODEC_VERSION);
-
-#ifdef CONFIG_PROC_FS
- videocodec_proc_entry = proc_create("videocodecs", 0, NULL, &videocodecs_proc_fops);
- if (!videocodec_proc_entry) {
- dprintk(1, KERN_ERR "videocodec: can't init procfs.\n");
- }
-#endif
- return 0;
-}
-
-static void __exit
-videocodec_exit (void)
-{
-#ifdef CONFIG_PROC_FS
- remove_proc_entry("videocodecs", NULL);
-#endif
-}
-
-EXPORT_SYMBOL(videocodec_attach);
-EXPORT_SYMBOL(videocodec_detach);
-EXPORT_SYMBOL(videocodec_register);
-EXPORT_SYMBOL(videocodec_unregister);
-
-module_init(videocodec_init);
-module_exit(videocodec_exit);
-
-MODULE_AUTHOR("Wolfgang Scherr <scherr@net4you.at>");
-MODULE_DESCRIPTION("Intermediate API module for video codecs "
- VIDEOCODEC_VERSION);
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 18:19:03 +0000