command: redo ancient TV/DVB/PVR commands

Convert all these commands to properties. (Except tv_last_channel, not
sure what to do with this.) Also, internally, don't access stream
details directly, but dispatch commands with stream ctrls.

Many of the new properties are a bit strange, because they're write-
only. Also remove some OSD output these commands produced, because I
couldn't be bothered to port these.

In general, this makes everything much cleaner, and will also make it
easier to e.g. move the demuxer to its own thread.

Don't bother updating input.conf, but changes.rst documents how old
commands map to the new ones.

Mostly untested, due to lack of hardware.

1 files changed, 17 insertions, 3 deletions

diff --git a/stream/stream_dvb.c b/stream/stream_dvb.c
index cdf282d3ac..c1697ddebd 100644
--- a/stream/stream_dvb.c
+++ b/stream/stream_dvb.c
@@ -550,13 +550,26 @@ int dvb_step_channel(stream_t *stream, int dir)
                 return 0;
         }
 
-        new_current = (list->NUM_CHANNELS + list->current + (dir == DVB_CHANNEL_HIGHER ? 1 : -1)) % list->NUM_CHANNELS;
+        new_current = (list->NUM_CHANNELS + list->current + (dir >= 0 ? 1 : -1)) % list->NUM_CHANNELS;
 
         return dvb_set_channel(stream, priv->card, new_current);
 }
 
-
-
+static int dvbin_stream_control(struct stream *s, int cmd, void *arg)
+{
+    int r;
+    switch (cmd) {
+    case STREAM_CTRL_DVB_SET_CHANNEL: {
+        int *iarg = arg;
+        r = dvb_set_channel(s, iarg[1], iarg[0]);
+        return r ? STREAM_OK : STREAM_ERROR;
+    }
+    case STREAM_CTRL_DVB_STEP_CHANNEL:
+        r = dvb_step_channel(s, *(int *)arg);
+        return r ? STREAM_OK : STREAM_ERROR;
+    }
+    return STREAM_UNSUPPORTED;
+}
 
 static void dvbin_close(stream_t *stream)
 {
@@ -692,6 +705,7 @@ static int dvb_open(stream_t *stream)
         stream->type = STREAMTYPE_DVB;
         stream->fill_buffer = dvb_streaming_read;
         stream->close = dvbin_close;
+        stream->control = dvbin_stream_control;
 
         stream->demuxer = "lavf";
         stream->lavf_type = "mpegts";