Typedefs | |
typedef struct _vbi_idl_demux | vbi_idl_demux |
IDL demultiplexer context. | |
typedef vbi_bool | vbi_idl_demux_cb (vbi_idl_demux *dx, const uint8_t *buffer, unsigned int n_bytes, unsigned int flags, void *user_data) |
Functions | |
void | vbi_idl_demux_reset (vbi_idl_demux *dx) _vbi_attribute((_vbi_nonnull(1))) |
vbi_bool | vbi_idl_demux_feed (vbi_idl_demux *dx, const uint8_t buffer[42]) |
vbi_bool | vbi_idl_demux_feed_frame (vbi_idl_demux *dx, const vbi_sliced *sliced, unsigned int n_lines) |
void | vbi_idl_demux_delete (vbi_idl_demux *dx) |
vbi_idl_demux * | vbi_idl_a_demux_new (unsigned int channel, unsigned int address, vbi_idl_demux_cb *callback, void *user_data) |
typedef struct _vbi_idl_demux vbi_idl_demux |
IDL demultiplexer context.
The contents of this structure are private.
Call vbi_idl_demux_new() to allocate an IDL demultiplexer context.
typedef vbi_bool vbi_idl_demux_cb(vbi_idl_demux *dx, const uint8_t *buffer, unsigned int n_bytes, unsigned int flags, void *user_data) |
dx | IDL demultiplexer returned by vbi_idl_a_demux_new() and given to vbi_idl_demux_feed(). | |
buffer | Pointer to received user data. | |
n_bytes | Number of bytes in the buffer. Can be 0 if the decoded packet did not contain user data. | |
flags | VBI_IDL_DATA_LOST , VBI_IDL_DEPENDENT . | |
user_data | User pointer passed to vbi_idl_demux_new(). |
void vbi_idl_demux_reset | ( | vbi_idl_demux * | dx | ) |
dx | IDL demultiplexer allocated with vbi_idl_a_demux_new(). |
vbi_bool vbi_idl_demux_feed | ( | vbi_idl_demux * | dx, | |
const uint8_t | buffer[42] | |||
) |
dx | IDL demultiplexer allocated with vbi_idl_a_demux_new(). | |
buffer | Teletext packet (last 42 bytes, i. e. without clock run-in and framing code), as in struct vbi_sliced. |
vbi_bool vbi_idl_demux_feed_frame | ( | vbi_idl_demux * | dx, | |
const vbi_sliced * | sliced, | |||
unsigned int | n_lines | |||
) |
dx | IDL demultiplexer allocated with vbi_idl_a_demux_new(). | |
sliced | Sliced VBI data. | |
n_lines | Number of lines in the sliced array. |
VBI_SLICED_TELETEXT_B_625
.
void vbi_idl_demux_delete | ( | vbi_idl_demux * | dx | ) |
dx | IDL demultiplexer allocated with vbi_idl_a_demux_new(), can be NULL . |
vbi_idl_demux* vbi_idl_a_demux_new | ( | unsigned int | channel, | |
unsigned int | address, | |||
vbi_idl_demux_cb * | callback, | |||
void * | user_data | |||
) |
channel | Filter out packets of this channel. | |
address | Filter out packets with this service data address. | |
callback | Function to be called by vbi_idl_demux_feed() when new data is available. | |
user_data | User pointer passed through to callback function. |
NULL
on failure (out of memory).