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reintroduce channels

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Bring back the channel object. Making a node and port on the client side
was rather awkward because of the async nature of many methods. It feels
better to have a specific communication channel object to interface with
a server side port.
Use port activate/deactivate to start/stop streams
Remove links from the ports. We let other objects install a callback on
the port to receive and route buffers.
This commit is contained in:
Wim Taymans 2016-07-20 17:29:34 +02:00
parent eefe6aacb9
commit e167d30296
26 changed files with 2840 additions and 675 deletions
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91
pinos/client/introspect.h
View file

@ -270,6 +270,97 @@ void pinos_context_get_port_info_by_id (PinosContext *context,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
/**
* PinosChannelState:
* @PINOS_CHANNEL_STATE_ERROR: the channel is in error
* @PINOS_CHANNEL_STATE_STOPPED: the channel is stopped
* @PINOS_CHANNEL_STATE_STARTING: the channel is starting
* @PINOS_CHANNEL_STATE_STREAMING: the channel is streaming
*
* The different channel states
*/
typedef enum {
PINOS_CHANNEL_STATE_ERROR = -1,
PINOS_CHANNEL_STATE_STOPPED = 0,
PINOS_CHANNEL_STATE_STARTING = 1,
PINOS_CHANNEL_STATE_STREAMING = 2,
} PinosChannelState;
const gchar * pinos_channel_state_as_string (PinosChannelState state);
/**
* PinosChannelInfo:
* @id: generic id of the channel_
* @channel_path: the unique path of the channel
* @direction: the channel direction
* @client_path: the owner client
* @change_mask: bitfield of changed fields since last call
* @port_path: the owner port
* @properties: the properties of the channel
* @state: the state
* @possible_formats: the possible formats
* @format: when streaming, the current format
*
* The channel information. Extra information can be added in later
* versions.
*/
typedef struct {
gpointer id;
const char *channel_path;
PinosDirection direction;
const char *client_path;
guint64 change_mask;
const char *port_path;
PinosProperties *properties;
PinosChannelState state;
GBytes *possible_formats;
GBytes *format;
} PinosChannelInfo;
/**
* PinosChannelInfoFlags:
* @PINOS_CHANNEL_INFO_FLAGS_NONE: no flags
* @PINOS_CHANNEL_INFO_FLAGS_NO_INPUT: don't list input channels
* @PINOS_CHANNEL_INFO_FLAGS_NO_OUTPUT: don't list output channels
*
* Extra flags to pass to pinos_context_list_channel_info() and
* pinos_context_get_channel_info_by_id().
*/
typedef enum {
PINOS_CHANNEL_INFO_FLAGS_NONE = 0,
PINOS_CHANNEL_INFO_FLAGS_NO_INPUT = (1 << 0),
PINOS_CHANNEL_INFO_FLAGS_NO_OUTPUT = (1 << 1),
} PinosChannelInfoFlags;
/**
* PinosChannelInfoCallback:
* @c: a #PinosContext
* @info: a #PinosChannelInfo
* @user_data: user data
*
* Callback with information about the Pinos channel in @info.
*/
typedef void (*PinosChannelInfoCallback) (PinosContext *c,
const PinosChannelInfo *info,
gpointer user_data);
void pinos_context_list_channel_info (PinosContext *context,
PinosChannelInfoFlags flags,
PinosChannelInfoCallback cb,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
void pinos_context_get_channel_info_by_id (PinosContext *context,
gpointer id,
PinosChannelInfoFlags flags,
PinosChannelInfoCallback cb,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
/**
* PinosConnectionInfo:
* @id: generic id of the connection