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Code Issues Releases Wiki Activity

audio: add command/function to reload audio output

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Anticipated use: simple solution for dealing with audio APIs which
request configuration changes via events.
This commit is contained in:
wm4 2014-10-27 11:52:42 +01:00
parent ac35e3b308
commit d5b081152a
6 changed files with 29 additions and 1 deletions
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2
DOCS/man/input.rst
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@ -544,7 +544,7 @@ Input Commands that are Possibly Subject to Change
Undocumented commands: ``tv_last_channel`` (TV/DVB only), ``get_property`` (?),
``vo_cmdline`` (experimental).
``vo_cmdline`` (experimental), ``ao_reload`` (experimental/internal).
Input Command Prefixes
----------------------

8
audio/out/ao.c
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@ -29,6 +29,7 @@
#include "audio/format.h"
#include "audio/audio.h"
#include "input/input.h"
#include "options/options.h"
#include "options/m_config.h"
#include "common/msg.h"
@ -406,6 +407,13 @@ bool ao_chmap_sel_get_def(struct ao *ao, const struct mp_chmap_sel *s,
return mp_chmap_sel_get_def(s, map, num);
}
// Request that the player core destroys and recreates the AO.
void ao_request_reload(struct ao *ao)
{
const char *cmd[] = {"ao_reload", NULL};
mp_input_run_cmd(ao->input_ctx, cmd);
}
// --- The following functions just return immutable information.
void ao_get_format(struct ao *ao, struct mp_audio *format)

2
audio/out/internal.h
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@ -183,6 +183,8 @@ bool ao_chmap_sel_adjust(struct ao *ao, const struct mp_chmap_sel *s,
bool ao_chmap_sel_get_def(struct ao *ao, const struct mp_chmap_sel *s,
struct mp_chmap *map, int num);
void ao_request_reload(struct ao *ao);
// Add a deep copy of e to the list.
// Call from ao_driver->list_devs callback only.
void ao_device_list_add(struct ao_device_list *list, struct ao *ao,

1
input/cmd_list.c
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@ -156,6 +156,7 @@ const struct mp_cmd_def mp_cmds[] = {
{ MP_CMD_DISCNAV, "discnav", { ARG_STRING } },
{ MP_CMD_AF, "af", { ARG_STRING, ARG_STRING } },
{ MP_CMD_AO_RELOAD, "ao_reload", },
{ MP_CMD_VF, "vf", { ARG_STRING, ARG_STRING } },

1
input/cmd_list.h
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@ -80,6 +80,7 @@ enum mp_command_type {
/// Audio Filter commands
MP_CMD_AF,
MP_CMD_AO_RELOAD,
/// Video filter commands
MP_CMD_VF,

16
player/command.c
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@ -1454,6 +1454,18 @@ static int get_device_entry(int item, int action, void *arg, void *ctx)
return m_property_read_sub(props, action, arg);
}
static void reload_audio_output(struct MPContext *mpctx)
{
if (!mpctx->ao)
return;
ao_reset(mpctx->ao);
uninit_audio_out(mpctx);
// This normally recreates the AO, although there are situations when AO
// creation is delayed; for example if there are no audio packets around,
// and the audio format is yet unknown.
reinit_audio_chain(mpctx);
}
static int mp_property_audio_devices(void *ctx, struct m_property *prop,
int action, void *arg)
{
@ -4233,6 +4245,10 @@ int run_command(MPContext *mpctx, mp_cmd_t *cmd)
}
break;
case MP_CMD_AO_RELOAD:
reload_audio_output(mpctx);
break;
case MP_CMD_AF:
return edit_filters_osd(mpctx, STREAM_AUDIO, cmd->args[0].v.s,
cmd->args[1].v.s, msg_osd);