Remove V4L2 decoder support (vo_v4l2 and ao_v4l2)

The removed VO and AO took MPEG data and decoded it with V4L2. I'm not
exactly sure what's the use of this today, but get rid of it.

As far as feeding video data to V4L2 is concerned, there are other
ways. For example, there is this script, that feeds yuv4mpeg formatted
raw video data to V4L2:

    https://raw.github.com/umlaeute/v4l2loopback/master/examples/yuv4mpeg_to_v4l2.c

3 files changed, 0 insertions, 288 deletions

diff --git a/libvo/video_out.c b/libvo/video_out.c
index 8cf0b531c1..5ae219093f 100644
--- a/libvo/video_out.c
+++ b/libvo/video_out.c
@@ -86,7 +86,6 @@ extern struct vo_driver video_out_caca;
 extern struct vo_driver video_out_direct3d;
 extern struct vo_driver video_out_direct3d_shaders;
 extern struct vo_driver video_out_directx;
-extern struct vo_driver video_out_v4l2;
 extern struct vo_driver video_out_directfb;
 extern struct vo_driver video_out_corevideo;
 extern struct vo_driver video_out_sharedbuffer;
@@ -124,9 +123,6 @@ const struct vo_driver *video_out_drivers[] =
 #ifdef CONFIG_CACA
         &video_out_caca,
 #endif
-#ifdef CONFIG_V4L2_DECODER
-        &video_out_v4l2,
-#endif
         &video_out_null,
         // should not be auto-selected
 #ifdef CONFIG_SHAREDBUFFER
diff --git a/libvo/vo_v4l2.c b/libvo/vo_v4l2.c
deleted file mode 100644
index 2f5d0f138a..0000000000
--- a/libvo/vo_v4l2.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * video output for V4L2 hardware MPEG decoders
- *
- * Copyright (C) 2007 Benjamin Zores
- *
- * This file is part of MPlayer.
- *
- * MPlayer 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.
- *
- * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <linux/types.h>
-#include <linux/videodev2.h>
-#include <linux/ioctl.h>
-
-#include "mp_msg.h"
-#include "subopt-helper.h"
-#include "video_out.h"
-#include "libmpcodecs/vfcap.h"
-#include "libmpcodecs/mp_image.h"
-#include "libmpdemux/mpeg_packetizer.h"
-#include "vo_v4l2.h"
-
-#define DEFAULT_MPEG_DECODER "/dev/video16"
-#define V4L2_VO_HDR "VO: [v4l2]"
-
-int v4l2_fd = -1;
-static vo_mpegpes_t *pes;
-
-/* suboptions */
-static int output = -1;
-static char *device = NULL;
-
-static const opt_t subopts[] = {
-    {"output", OPT_ARG_INT, &output, int_non_neg},
-    {"device", OPT_ARG_MSTRZ, &device, NULL},
-    {NULL}
-};
-
-int v4l2_write(const unsigned char *data, int len)
-{
-    if (v4l2_fd < 0)
-        return 0;
-
-    return write(v4l2_fd, data, len);
-}
-
-/* video out functions */
-
-static int config(struct vo *vo, uint32_t width, uint32_t height,
-                  uint32_t d_width, uint32_t d_height,
-                  uint32_t fullscreen, uint32_t format)
-{
-    return 0;
-}
-
-static int preinit(struct vo *vo, const char *arg)
-{
-    struct v4l2_output vout;
-    struct v4l2_ext_controls ctrls;
-    int err;
-
-    if (subopt_parse(arg, subopts) != 0) {
-        mp_msg(MSGT_VO, MSGL_FATAL,
-               "\n-vo v4l2 command line help:\n"
-               "Example: mplayer -vo v4l2:device=/dev/video16:output=2\n"
-               "\nOptions:\n"
-               "  device=/dev/videoX\n"
-               "    Name of the MPEG decoder device file.\n"
-               "  output=<0-...>\n"
-               "    V4L2 id of the TV output.\n"
-               "\n");
-        return -1;
-    }
-
-    if (!device)
-        device = strdup(DEFAULT_MPEG_DECODER);
-
-    v4l2_fd = open(device, O_RDWR);
-    if (v4l2_fd < 0) {
-        free(device);
-        mp_msg(MSGT_VO, MSGL_FATAL, "%s %s\n", V4L2_VO_HDR, strerror(errno));
-        return -1;
-    }
-
-    /* check for device hardware MPEG decoding capability */
-    ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
-    ctrls.count = 0;
-    ctrls.controls = NULL;
-
-    if (ioctl(v4l2_fd, VIDIOC_G_EXT_CTRLS, &ctrls) < 0) {
-        free(device);
-        mp_msg(MSGT_OPEN, MSGL_FATAL, "%s %s\n", V4L2_VO_HDR, strerror(errno));
-        return -1;
-    }
-
-    /* list available outputs */
-    vout.index = 0;
-    err = 1;
-    mp_msg(MSGT_VO, MSGL_INFO, "%s Available video outputs: ", V4L2_VO_HDR);
-    while (ioctl(v4l2_fd, VIDIOC_ENUMOUTPUT, &vout) >= 0) {
-        err = 0;
-        mp_msg(MSGT_VO, MSGL_INFO, "'#%d, %s' ", vout.index, vout.name);
-        vout.index++;
-    }
-    if (err) {
-        mp_msg(MSGT_VO, MSGL_INFO, "none\n");
-        free(device);
-        return -1;
-    } else
-        mp_msg(MSGT_VO, MSGL_INFO, "\n");
-
-    /* set user specified output */
-    if (output != -1) {
-        if (ioctl(v4l2_fd, VIDIOC_S_OUTPUT, &output) < 0) {
-            mp_msg(MSGT_VO, MSGL_ERR,
-                   "%s can't set output (%s)\n", V4L2_VO_HDR, strerror(errno));
-            free(device);
-            return -1;
-        }
-    }
-
-    /* display device name */
-    mp_msg(MSGT_VO, MSGL_INFO, "%s using %s\n", V4L2_VO_HDR, device);
-    free(device);
-
-    /* display current video output */
-    if (ioctl(v4l2_fd, VIDIOC_G_OUTPUT, &output) == 0) {
-        vout.index = output;
-        if (ioctl(v4l2_fd, VIDIOC_ENUMOUTPUT, &vout) < 0) {
-            mp_msg(MSGT_VO, MSGL_ERR,
-                   "%s can't get output (%s).\n", V4L2_VO_HDR, strerror(errno));
-            return -1;
-        } else
-            mp_msg(MSGT_VO, MSGL_INFO,
-                   "%s video output: %s\n", V4L2_VO_HDR, vout.name);
-    } else {
-        mp_msg(MSGT_VO, MSGL_ERR,
-               "%s can't get output (%s).\n", V4L2_VO_HDR, strerror(errno));
-        return -1;
-    }
-
-    return 0;
-}
-
-static void draw_osd(struct vo *vo, struct osd_state *osd)
-{
-    /* do nothing */
-}
-
-static uint32_t draw_image(struct vo *vo, mp_image_t *mpi)
-{
-    pes = (vo_mpegpes_t *) (mpi->planes[0]);
-    return 0;
-}
-
-static void flip_page(struct vo *vo)
-{
-    if (v4l2_fd < 0)
-        return;
-
-    if (!pes)
-        return;
-
-    send_mpeg_pes_packet(pes->data, pes->size, pes->id,
-                         pes->timestamp ? pes->timestamp : vo_pts, 2,
-                         v4l2_write);
-
-    /* ensure flip_page() won't be called twice */
-    pes = NULL;
-}
-
-static int draw_slice(struct vo *vo, uint8_t *image[], int stride[],
-                      int w, int h, int x, int y)
-{
-    return 0;
-}
-
-static void uninit(struct vo *vo)
-{
-    if (v4l2_fd < 0)
-        return;
-
-    /* close device */
-    close(v4l2_fd);
-    v4l2_fd = -1;
-}
-
-static void check_events(struct vo *vo)
-{
-    /* do nothing */
-}
-
-static int query_format(struct vo *vo, uint32_t format)
-{
-    if (format != IMGFMT_MPEGPES)
-        return 0;
-
-    return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_TIMER;
-}
-
-static int control(struct vo *vo, uint32_t request, void *data)
-{
-    switch (request) {
-    case VOCTRL_QUERY_FORMAT:
-        return query_format(vo, *((uint32_t *) data));
-    case VOCTRL_DRAW_IMAGE:
-        return draw_image(vo, data);
-    }
-
-    return VO_NOTIMPL;
-}
-
-const struct vo_driver video_out_v4l2 = {
-    .is_new = false,
-    .info = &(const vo_info_t) {
-        "V4L2 MPEG Video Decoder Output",
-        "v4l2",
-        "Benjamin Zores",
-        ""
-    },
-    .preinit = preinit,
-    .config = config,
-    .control = control,
-    .draw_slice = draw_slice,
-    .draw_osd = draw_osd,
-    .flip_page = flip_page,
-    .check_events = check_events,
-    .uninit = uninit,
-};
diff --git a/libvo/vo_v4l2.h b/libvo/vo_v4l2.h
deleted file mode 100644
index 15a445afc0..0000000000
--- a/libvo/vo_v4l2.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * video output for V4L2 hardware MPEG decoders
- *
- * Copyright (C) 2007 Benjamin Zores
- *
- * This file is part of MPlayer.
- *
- * MPlayer 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.
- *
- * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef MPLAYER_VO_V4L2_H
-#define MPLAYER_VO_V4L2_H
-
-extern int v4l2_fd;
-
-int v4l2_write(const unsigned char *data, int len);
-
-#endif /* MPLAYER_VO_V4L2_H */