Remove classic Linux analog TV support, and DVB runtime controls

Linux analog TV support (via tv://) was excessively complex, and
whenever I attempted to use it (cameras or loopback devices), it didn't
work well, or would have required some major work to update it. It's
very much stuck in the analog past (my favorite are the frequency tables
in frequencies.c for analog TV channels which don't exist anymore).

Especially cameras and such work fine with libavdevice and better than
tv://, for example:

  mpv av://v4l2:/dev/video0

(adding --profile=low-latency --untimed even makes it mostly realtime)

Adding a new input layer that targets such "modern" uses would be
acceptable, if anyone is interested in it. The old TV code is just too
focused on actual analog TV.

DVB is rather obscure, but has an active maintainer, so don't remove it.
However, the demux/stream ctrl layer must go, so remove controls for
channel switching. Most of these could be reimplemented by using the
normal method for option runtime changes.

1 files changed, 0 insertions, 126 deletions

diff --git a/stream/tvi_dummy.c b/stream/tvi_dummy.c
deleted file mode 100644
index 744a706e3e..0000000000
--- a/stream/tvi_dummy.c
+++ /dev/null
@@ -1,126 +0,0 @@
-/*
- * Only a sample!
- *
- * This file is part of mpv.
- *
- * mpv 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.
- *
- * mpv 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 mpv.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-#include "common/common.h"
-#include "tv.h"
-
-static tvi_handle_t *tvi_init_dummy(struct mp_log *log, tv_param_t* tv_param);
-/* information about this file */
-const tvi_info_t tvi_info_dummy = {
-        tvi_init_dummy,
-        "NULL-TV",
-        "dummy",
-};
-
-/* private data's */
-typedef struct priv {
-    int width;
-    int height;
-} priv_t;
-
-#include "tvi_def.h"
-
-/* handler creator - entry point ! */
-static tvi_handle_t *tvi_init_dummy(struct mp_log *log, tv_param_t* tv_param)
-{
-    return tv_new_handle(sizeof(priv_t), log, &functions);
-}
-
-/* initialisation */
-static int init(priv_t *priv)
-{
-    priv->width = 320;
-    priv->height = 200;
-    return 1;
-}
-
-/* that's the real start, we'got the format parameters (checked with control) */
-static int start(priv_t *priv)
-{
-    return 1;
-}
-
-static int uninit(priv_t *priv)
-{
-    return 1;
-}
-
-static int do_control(priv_t *priv, int cmd, void *arg)
-{
-    switch(cmd)
-    {
-        case TVI_CONTROL_IS_VIDEO:
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_GET_FORMAT:
-            *(int *)arg = MP_FOURCC_YV12;
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_SET_FORMAT:
-        {
-//          int req_fmt = *(int *)arg;
-            int req_fmt = *(int *)arg;
-            if (req_fmt != MP_FOURCC_YV12)
-                return TVI_CONTROL_FALSE;
-            return TVI_CONTROL_TRUE;
-        }
-        case TVI_CONTROL_VID_SET_WIDTH:
-            priv->width = *(int *)arg;
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_GET_WIDTH:
-            *(int *)arg = priv->width;
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_SET_HEIGHT:
-            priv->height = *(int *)arg;
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_GET_HEIGHT:
-            *(int *)arg = priv->height;
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_VID_CHK_WIDTH:
-        case TVI_CONTROL_VID_CHK_HEIGHT:
-            return TVI_CONTROL_TRUE;
-        case TVI_CONTROL_TUN_SET_NORM:
-            return TVI_CONTROL_TRUE;
-    }
-    return TVI_CONTROL_UNKNOWN;
-}
-
-static double grab_video_frame(priv_t *priv, char *buffer, int len)
-{
-    memset(buffer, 0x42, len);
-    return MP_NOPTS_VALUE;
-}
-
-static int get_video_framesize(priv_t *priv)
-{
-    /* YV12 */
-    return priv->width * priv->height * 12 / 8;
-}
-
-static double grab_audio_frame(priv_t *priv, char *buffer, int len)
-{
-    memset(buffer, 0x42, len);
-    return MP_NOPTS_VALUE;
-}
-
-static int get_audio_framesize(priv_t *priv)
-{
-    return 1;
-}