Hi Frédéric,
2011/8/22 Frédéric Dalleau <frederic.dalleau@xxxxxxxxxxxxxxx>:
> Media interface needs to monitor state changes of HandsfreeGateway.
> ---
> audio/gateway.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
> audio/gateway.h | 7 ++++++
> 2 files changed, 68 insertions(+), 0 deletions(-)
>
> diff --git a/audio/gateway.c b/audio/gateway.c
> index e9485d0..805b8cb 100644
> --- a/audio/gateway.c
> +++ b/audio/gateway.c
> @@ -72,6 +72,14 @@ struct gateway {
> int version;
> };
>
> +struct gateway_state_callback {
> + gateway_state_cb cb;
> + void *user_data;
> + unsigned int id;
> +};
> +
> +static GSList *gateway_callbacks = NULL;
> +
> int gateway_close(struct audio_device *device);
>
> static const char *state2str(gateway_state_t state)
> @@ -104,16 +112,37 @@ static void change_state(struct audio_device *dev, gateway_state_t new_state)
> {
> struct gateway *gw = dev->gateway;
> const char *val;
> + GSList *l;
> + gateway_state_t old_state;
>
> if (gw->state == new_state)
> return;
>
> val = state2str(new_state);
> + old_state = gw->state;
> gw->state = new_state;
>
> emit_property_changed(dev->conn, dev->path,
> AUDIO_GATEWAY_INTERFACE, "State",
> DBUS_TYPE_STRING, &val);
> +
> + for (l = gateway_callbacks; l != NULL; l = l->next) {
> + struct gateway_state_callback *cb = l->data;
> + cb->cb(dev, old_state, new_state, cb->user_data);
> + }
> +}
> +
> +void gateway_set_state(struct audio_device *dev, gateway_state_t new_state)
> +{
> + switch (new_state) {
> + case GATEWAY_STATE_DISCONNECTED:
> + gateway_close(dev);
> + break;
> + case GATEWAY_STATE_CONNECTING:
> + case GATEWAY_STATE_CONNECTED:
> + case GATEWAY_STATE_PLAYING:
> + break;
> + }
> }
>
> static void agent_disconnect(struct audio_device *dev, struct hf_agent *agent)
> @@ -810,3 +839,35 @@ void gateway_suspend_stream(struct audio_device *dev)
> gw->sco_start_cb_data = NULL;
> change_state(dev, GATEWAY_STATE_CONNECTED);
> }
> +
> +unsigned int gateway_add_state_cb(gateway_state_cb cb, void *user_data)
> +{
> + struct gateway_state_callback *state_cb;
> + static unsigned int id = 0;
> +
> + state_cb = g_new(struct gateway_state_callback, 1);
> + state_cb->cb = cb;
> + state_cb->user_data = user_data;
> + state_cb->id = ++id;
> +
> + gateway_callbacks = g_slist_append(gateway_callbacks, state_cb);
> +
> + return state_cb->id;
> +}
> +
> +gboolean gateway_remove_state_cb(unsigned int id)
> +{
> + GSList *l;
> +
> + for (l = gateway_callbacks; l != NULL; l = l->next) {
> + struct gateway_state_callback *cb = l->data;
> + if (cb && cb->id == id) {
> + gateway_callbacks = g_slist_remove(gateway_callbacks,
> + cb);
> + g_free(cb);
> + return TRUE;
> + }
> + }
> +
> + return FALSE;
> +}
> diff --git a/audio/gateway.h b/audio/gateway.h
> index a45ef82..32b5d6d 100644
> --- a/audio/gateway.h
> +++ b/audio/gateway.h
> @@ -33,9 +33,14 @@ typedef enum {
> GATEWAY_STATE_PLAYING,
> } gateway_state_t;
>
> +typedef void (*gateway_state_cb) (struct audio_device *dev,
> + gateway_state_t old_state,
> + gateway_state_t new_state,
> + void *user_data);
> typedef void (*gateway_stream_cb_t) (struct audio_device *dev, GError *err,
> void *user_data);
>
> +void gateway_set_state(struct audio_device *dev, gateway_state_t new_state);
> void gateway_unregister(struct audio_device *dev);
> struct gateway *gateway_init(struct audio_device *device);
> gboolean gateway_is_connected(struct audio_device *dev);
> @@ -49,3 +54,5 @@ int gateway_config_stream(struct audio_device *dev, gateway_stream_cb_t cb,
> gboolean gateway_cancel_stream(struct audio_device *dev, unsigned int id);
> int gateway_get_sco_fd(struct audio_device *dev);
> void gateway_suspend_stream(struct audio_device *dev);
> +unsigned int gateway_add_state_cb(gateway_state_cb cb, void *user_data);
> +gboolean gateway_remove_state_cb(unsigned int id);
> --
> 1.7.1
>
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Ack
--
Luiz Augusto von Dentz
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