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, 298 deletions

diff --git a/stream/audio_in.c b/stream/audio_in.c
deleted file mode 100644
index 8ed92767c1..0000000000
--- a/stream/audio_in.c
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "config.h"
-
-#include "audio_in.h"
-#include "common/common.h"
-#include "common/msg.h"
-#include <string.h>
-#include <errno.h>
-
-// sanitizes ai structure before calling other functions
-int audio_in_init(audio_in_t *ai, struct mp_log *log, int type)
-{
-    ai->type = type;
-    ai->setup = 0;
-    ai->log = log;
-
-    ai->channels = -1;
-    ai->samplerate = -1;
-    ai->blocksize = -1;
-    ai->bytes_per_sample = -1;
-    ai->samplesize = -1;
-
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        ai->alsa.handle = NULL;
-        ai->alsa.log = NULL;
-        ai->alsa.device = NULL;
-        return 0;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        ai->oss.audio_fd = -1;
-        ai->oss.device = NULL;
-        return 0;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-        ai->sndio.hdl = NULL;
-        ai->sndio.device = NULL;
-        return 0;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_setup(audio_in_t *ai)
-{
-
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        if (ai_alsa_init(ai) < 0) return -1;
-        ai->setup = 1;
-        return 0;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        if (ai_oss_init(ai) < 0) return -1;
-        ai->setup = 1;
-        return 0;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-        if (ai_sndio_init(ai) < 0) return -1;
-        ai->setup = 1;
-        return 0;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_set_samplerate(audio_in_t *ai, int rate)
-{
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        ai->req_samplerate = rate;
-        if (!ai->setup) return 0;
-        if (ai_alsa_setup(ai) < 0) return -1;
-        return ai->samplerate;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        ai->req_samplerate = rate;
-        if (!ai->setup) return 0;
-        if (ai_oss_set_samplerate(ai) < 0) return -1;
-        return ai->samplerate;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-        ai->req_samplerate = rate;
-        if (!ai->setup) return 0;
-        if (ai_sndio_setup(ai) < 0) return -1;
-        return ai->samplerate;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_set_channels(audio_in_t *ai, int channels)
-{
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        ai->req_channels = channels;
-        if (!ai->setup) return 0;
-        if (ai_alsa_setup(ai) < 0) return -1;
-        return ai->channels;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        ai->req_channels = channels;
-        if (!ai->setup) return 0;
-        if (ai_oss_set_channels(ai) < 0) return -1;
-        return ai->channels;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-       ai->req_channels = channels;
-       if (!ai->setup) return 0;
-       if (ai_sndio_setup(ai) < 0) return -1;
-       return ai->channels;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_set_device(audio_in_t *ai, char *device)
-{
-#if HAVE_ALSA
-    int i;
-#endif
-    if (ai->setup) return -1;
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        free(ai->alsa.device);
-        ai->alsa.device = strdup(device);
-        if (ai->alsa.device) {
-            /* mplayer could not handle colons in arguments */
-            for (i = 0; i < (int)strlen(ai->alsa.device); i++) {
-                if (ai->alsa.device[i] == '.') ai->alsa.device[i] = ':';
-            }
-        }
-        return 0;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        free(ai->oss.device);
-        ai->oss.device = strdup(device);
-        return 0;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-       if (ai->sndio.device) free(ai->sndio.device);
-       ai->sndio.device = strdup(device);
-       return 0;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_uninit(audio_in_t *ai)
-{
-    if (ai->setup) {
-        switch (ai->type) {
-#if HAVE_ALSA
-        case AUDIO_IN_ALSA:
-            if (ai->alsa.log)
-                snd_output_close(ai->alsa.log);
-            if (ai->alsa.handle) {
-                snd_pcm_close(ai->alsa.handle);
-            }
-            ai->setup = 0;
-            return 0;
-#endif
-#if HAVE_OSS_AUDIO
-        case AUDIO_IN_OSS:
-            close(ai->oss.audio_fd);
-            ai->setup = 0;
-            return 0;
-#endif
-#if HAVE_SNDIO
-       case AUDIO_IN_SNDIO:
-           if (ai->sndio.hdl)
-               sio_close(ai->sndio.hdl);
-           ai->setup = 0;
-           return 0;
-#endif
-        }
-    }
-    return -1;
-}
-
-int audio_in_start_capture(audio_in_t *ai)
-{
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        return snd_pcm_start(ai->alsa.handle);
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        return 0;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-       if (!sio_start(ai->sndio.hdl))
-           return -1;
-       return 0;
-#endif
-    default:
-        return -1;
-    }
-}
-
-int audio_in_read_chunk(audio_in_t *ai, unsigned char *buffer)
-{
-    int ret;
-
-    switch (ai->type) {
-#if HAVE_ALSA
-    case AUDIO_IN_ALSA:
-        ret = snd_pcm_readi(ai->alsa.handle, buffer, ai->alsa.chunk_size);
-        if (ret != ai->alsa.chunk_size) {
-            if (ret < 0) {
-                MP_ERR(ai, "\nError reading audio: %s\n", snd_strerror(ret));
-                if (ret == -EPIPE) {
-                    if (ai_alsa_xrun(ai) == 0) {
-                        MP_ERR(ai, "Recovered from cross-run, some frames may be left out!\n");
-                    } else {
-                        MP_ERR(ai, "Fatal error, cannot recover!\n");
-                    }
-                }
-            } else {
-                MP_ERR(ai, "\nNot enough audio samples!\n");
-            }
-            return -1;
-        }
-        return ret;
-#endif
-#if HAVE_OSS_AUDIO
-    case AUDIO_IN_OSS:
-        ret = read(ai->oss.audio_fd, buffer, ai->blocksize);
-       if (ret != ai->blocksize) {
-           if (ret < 0) {
-               MP_ERR(ai, "\nError reading audio: %s\n", mp_strerror(errno));
-
-           } else {
-               MP_ERR(ai, "\nNot enough audio samples!\n");
-           }
-           return -1;
-       }
-       return ret;
-#endif
-#if HAVE_SNDIO
-    case AUDIO_IN_SNDIO:
-       ret = sio_read(ai->sndio.hdl, buffer, ai->blocksize);
-        if (ret != ai->blocksize) {
-            if (ret < 0) {
-                MP_ERR(ai, "\nError reading audio: %s\n", mp_strerror(errno));
-            } else {
-                MP_ERR(ai, "\nNot enough audio samples!\n");
-            }
-            return -1;
-        }
-        return ret;
-#endif
-    default:
-        return -1;
-    }
-}