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Merge pull request #403 from jkellerer/pipe_metadata_volume

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Add support for instant volume changes when using metadata pipe (pvol)
This commit is contained in:
ejurgensen 2017-07-14 19:43:40 +02:00 committed by GitHub
commit 4085161e9a
1 changed files with 50 additions and 2 deletions
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52
src/inputs/pipe.c
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@ -302,6 +302,47 @@ parse_progress(struct input_metadata *m, char *progress)
m->song_length = (end - start) * 10 / 441; // Convert to ms based on 44100
}
static void
parse_volume(char *volume)
{
char *volume_next;
float airplay_volume;
float local_volume;
errno = 0;
airplay_volume = strtof(volume, &volume_next);
if ((errno == ERANGE) || (volume == volume_next))
{
DPRINTF(E_LOG, L_PLAYER, "Invalid airplay volume in string (%s): %s\n", volume,
(errno == ERANGE ? strerror(errno) : "First token is not a number."));
return;
}
if (strcmp(volume_next, ",0.00,0.00,0.00") != 0)
{
DPRINTF(E_DBG, L_PLAYER, "Not applying airplay volume while software volume control is enabled (%s)\n", volume);
return;
}
if (((int) airplay_volume) == -144)
{
DPRINTF(E_DBG, L_PLAYER, "Applying airplay volume ('mute', value: %.2f)\n", airplay_volume);
player_volume_set(0);
}
else if (airplay_volume >= -30.0 && airplay_volume <= 0.0)
{
local_volume = 100.0 + (airplay_volume / 30.0 * 100.0);
if (local_volume < 0 || local_volume > 100)
return;
DPRINTF(E_DBG, L_PLAYER, "Applying airplay volume (percent: %.0f, value: %.2f)\n", local_volume, airplay_volume);
player_volume_set((int) local_volume);
}
else
DPRINTF(E_LOG, L_PLAYER, "Airplay volume out of range (-144.0, [-30.0 - 0.0]): %.2f\n", airplay_volume);
}
// returns 1 on metadata found, 0 on nothing, -1 on error
static int
parse_item(struct input_metadata *m, const char *item)
@ -313,6 +354,7 @@ parse_item(struct input_metadata *m, const char *item)
uint32_t type;
uint32_t code;
char *progress;
char *volume;
char **data;
int ret;
@ -356,6 +398,8 @@ parse_item(struct input_metadata *m, const char *item)
data = &m->genre;
else if (code == dmapval("prgr"))
data = &progress;
else if (code == dmapval("pvol"))
data = &volume;
else
goto out_nothing;
@ -364,7 +408,7 @@ parse_item(struct input_metadata *m, const char *item)
{
pthread_mutex_lock(&pipe_metadata_lock);
if (data != &progress)
if (data != &progress && data != &volume)
free(*data);
*data = b64_decode(s);
@ -376,6 +420,11 @@ parse_item(struct input_metadata *m, const char *item)
parse_progress(m, progress);
free(*data);
}
else if (data == &volume)
{
parse_volume(volume);
free(*data);
}
pthread_mutex_unlock(&pipe_metadata_lock);
@ -910,4 +959,3 @@ struct input_definition input_pipe =
.init = init,
.deinit = deinit,
};