-/*******************************************************************************
+/******************************************************************************
* input.h: input thread interface
* (c)1999 VideoLAN
- *******************************************************************************/
+ ******************************************************************************/
/* needs : "netlist.h", "config.h", "mtime.h" */
/* ?? missing:
* tables version control */
-/*******************************************************************************
+/******************************************************************************
* External structures
- *******************************************************************************
+ ******************************************************************************
* These structures, required here only as pointers destinations, are declared
* in other headers.
- *******************************************************************************/
-struct video_cfg_s; /* video configuration descriptor */
-struct vout_thread_s; /* video output thread */
-struct stream_descriptor_s; /* PSI tables */
+ ******************************************************************************/
+struct video_cfg_s; /* video configuration descriptor */
+struct vout_thread_s; /* video output thread */
+struct stream_descriptor_s; /* PSI tables */
-/*******************************************************************************
+/******************************************************************************
* Constants related to input
- *******************************************************************************/
-#define TS_PACKET_SIZE 188 /* size of a TS packet */
-#define PES_HEADER_SIZE 14 /* size of the first part of a PES header */
-#define PSI_SECTION_SIZE 4096 /* Maximum size of a PSI section */
+ ******************************************************************************/
+#define TS_PACKET_SIZE 188 /* size of a TS packet */
+#define PES_HEADER_SIZE 14 /* size of the first part of a PES header */
+#define PSI_SECTION_SIZE 4096 /* Maximum size of a PSI section */
-/*******************************************************************************
+/******************************************************************************
* ts_packet_t
- *******************************************************************************
+ ******************************************************************************
* Describe a TS packet.
- *******************************************************************************/
+ ******************************************************************************/
typedef struct ts_packet_struct
{
/* Nothing before this line, the code relies on that */
- byte_t buffer[TS_PACKET_SIZE]; /* raw TS data packet */
+ byte_t buffer[TS_PACKET_SIZE]; /* raw TS data packet */
/* Decoders information */
unsigned int i_payload_start;
- /* start of the PES payload in this packet */
- unsigned int i_payload_end; /* guess ? :-) */
+ /* start of the PES payload in this packet */
+ unsigned int i_payload_end; /* guess ? :-) */
/* Used to chain the TS packets that carry data for a same PES or PSI */
struct ts_packet_struct * p_prev_ts;
} ts_packet_t;
-/*******************************************************************************
+/******************************************************************************
* pes_packet_t
- *******************************************************************************
+ ******************************************************************************
* Describes an PES packet, with its properties, and pointers to the TS packets
* containing it.
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
/* PES properties */
- boolean_t b_data_loss; /* The previous (at least) PES packet
- * has been lost. The decoders will have to find a way to recover. */
- boolean_t b_data_alignment; /* used to find the beginning of a
- * video or audio unit */
- boolean_t b_has_pts; /* is the following field set ? */
- mtime_t i_pts; /* the PTS for this packet (if set above) */
+ boolean_t b_data_loss; /* The previous (at least) PES packet
+ * has been lost. The decoders will have to find a way to recover. */
+ boolean_t b_data_alignment; /* used to find the beginning of a
+ * video or audio unit */
+ boolean_t b_has_pts; /* is the following field set ? */
+ mtime_t i_pts; /* the PTS for this packet (if set above) */
boolean_t b_random_access;
- /* if TRUE, in the payload of this packet, there is the first byte
- * of a video sequence header, or the first byte of an audio frame.
- */
- u8 i_stream_id; /* payload type and id */
- int i_pes_size; /* size of the current PES packet */
- int i_ts_packets; /* number of TS packets in this PES */
+ /* if TRUE, in the payload of this packet, there is the first byte
+ * of a video sequence header, or the first byte of an audio frame.
+ */
+ u8 i_stream_id; /* payload type and id */
+ int i_pes_size; /* size of the current PES packet */
+ int i_ts_packets; /* number of TS packets in this PES */
/* Demultiplexer environment */
- boolean_t b_discard_payload; /* is the packet messed up ? */
- byte_t * p_pes_header; /* pointer to the PES header */
- byte_t * p_pes_header_save; /* temporary buffer */
+ boolean_t b_discard_payload; /* is the packet messed up ? */
+ byte_t * p_pes_header; /* pointer to the PES header */
+ byte_t * p_pes_header_save; /* temporary buffer */
/* Pointers to TS packets (TS packets are then linked by the p_prev_ts and
p_next_ts fields of the ts_packet_t struct) */
- ts_packet_t * p_first_ts; /* The first TS packet containing this
- * PES (used by decoders). */
- ts_packet_t * p_last_ts; /* The last TS packet gathered at present
- * (used by the demultiplexer). */
+ ts_packet_t * p_first_ts; /* The first TS packet containing this
+ * PES (used by decoders). */
+ ts_packet_t * p_last_ts; /* The last TS packet gathered at present
+ * (used by the demultiplexer). */
} pes_packet_t;
-/*******************************************************************************
+/******************************************************************************
* psi_section_t
- *******************************************************************************
+ ******************************************************************************
* Describes a PSI section. Beware, it doesn't contain pointers to the TS
* packets that contain it as for a PES, but the data themselves
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
byte_t buffer[PSI_SECTION_SIZE];
- boolean_t b_running_section; /* Is there a section being decoded ? */
+ boolean_t b_running_section; /* Is there a section being decoded ? */
u16 i_length;
u16 i_current_position;
} psi_section_t;
-/*******************************************************************************
+/******************************************************************************
* es_descriptor_t: elementary stream descriptor
- *******************************************************************************
+ ******************************************************************************
* Describes an elementary stream, and includes fields required to handle and
* demultiplex this elementary stream.
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
- u16 i_id; /* stream ID, PID for TS streams */
- u8 i_type; /* stream type */
+ u16 i_id; /* stream ID, PID for TS streams */
+ u8 i_type; /* stream type */
- boolean_t b_pcr; /* does the stream include a PCR ? */
+ boolean_t b_pcr; /* does the stream include a PCR ? */
/* ?? b_pcr will be replaced by something else: since a PCR can't be shared
* between several ES, we will probably store the PCR fields directly here,
* and one of those fields will probably (again) be used as a test of the
* PCR presence */
- boolean_t b_psi; /* does the stream have to be handled by the
- PSI decoder ? */
+ boolean_t b_psi; /* does the stream have to be handled by the
+ PSI decoder ? */
/* Markers */
int i_continuity_counter;
boolean_t b_discontinuity;
/* PES packets */
pes_packet_t * p_pes_packet;
- /* current PES packet we are gathering */
+ /* current PES packet we are gathering */
/* PSI packets */
- psi_section_t * p_psi_section; /* idem for a PSI stream */
+ psi_section_t * p_psi_section; /* idem for a PSI stream */
/* Decoder informations */
- void * p_dec; /* p_dec is void *, since we don't know a
- * priori whether it is adec_thread_t or
- * vdec_thread_t. We will use explicit
- * casts. */
+ void * p_dec; /* p_dec is void *, since we don't know a
+ * priori whether it is adec_thread_t or
+ * vdec_thread_t. We will use explicit
+ * casts. */
/* ?? video stream descriptor ? */
/* ?? audio stream descriptor ? */
#ifdef STATS
/* Stats */
- count_t c_bytes; /* total bytes read */
- count_t c_payload_bytes; /* total of payload usefull bytes */
- count_t c_packets; /* total packets read */
- count_t c_invalid_packets; /* invalid packets read */
+ count_t c_bytes; /* total bytes read */
+ count_t c_payload_bytes;/* total of payload usefull bytes */
+ count_t c_packets; /* total packets read */
+ count_t c_invalid_packets; /* invalid packets read */
/* ?? ... other stats */
#endif
} es_descriptor_t;
/* Special PID values - note that the PID is only on 13 bits, and that values
* greater than 0x1fff have no meaning in a stream */
#define PROGRAM_ASSOCIATION_TABLE_PID 0x0000
-#define CONDITIONNAL_ACCESS_TABLE_PID 0x0001 /* not used */
-#define EMPTY_PID 0xffff /* empty record in a table */
+#define CONDITIONNAL_ACCESS_TABLE_PID 0x0001 /* not used */
+#define EMPTY_PID 0xffff /* empty record in a table */
/* ES streams types - see ISO/IEC 13818-1 table 2-29 numbers */
#define MPEG1_VIDEO_ES 0x01
#define MPEG2_VIDEO_ES 0x02
#define MPEG1_AUDIO_ES 0x03
#define MPEG2_AUDIO_ES 0x04
-#define AC3_AUDIO_ES 0x05
-/*******************************************************************************
+/******************************************************************************
* program_descriptor_t
- *******************************************************************************
+ ******************************************************************************
* Describes a program and list associated elementary streams. It is build by
* the PSI decoder upon the informations carried in program map sections
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
/* Program characteristics */
- u16 i_number; /* program number */
- u8 i_version; /* version number */
- boolean_t b_is_ok; /* Is the description up to date ?*/
- u16 i_pcr_pid; /* PCR ES */
+ u16 i_number; /* program number */
+ u8 i_version; /* version number */
+ boolean_t b_is_ok; /* Is the description up to date ?*/
+ u16 i_pcr_pid; /* PCR ES */
int i_es_number;
- es_descriptor_t ** ap_es; /* array of pointers to ES */
+ es_descriptor_t ** ap_es; /* array of pointers to ES */
#ifdef DVB_EXTENSIONS
/* Service Descriptor (program name) */
#endif
} pgrm_descriptor_t;
-/*******************************************************************************
+/******************************************************************************
* pcr_descriptor_t
- *******************************************************************************
+ ******************************************************************************
* Contains informations used to synchronise the decoder with the server
- *******************************************************************************/
+ ******************************************************************************/
typedef struct pcr_descriptor_struct
{
- vlc_mutex_t lock; /* pcr modification lock */
+ vlc_mutex_t lock; /* pcr modification lock */
mtime_t delta_clock;
mtime_t delta_decode;
- /* represents decoder_time - pcr_time in usecondes */
+ /* represents decoder_time - pcr_time in usecondes */
mtime_t last_pcr;
count_t c_average;
- /* counter used to compute dynamic average values */
+ /* counter used to compute dynamic average values */
count_t c_pts;
#ifdef STATS
/* Stats */
count_t c_average_jitter;
- mtime_t max_jitter; /* the evalueted maximum jitter */
- mtime_t average_jitter; /* the evalueted average jitter */
- count_t c_pcr; /* the number of PCR which have been decoded */
+ mtime_t max_jitter; /* the evalueted maximum jitter */
+ mtime_t average_jitter; /* the evalueted average jitter */
+ count_t c_pcr; /* the number of PCR which have been decoded */
#endif
} pcr_descriptor_t;
-/*******************************************************************************
+/******************************************************************************
* stream_descriptor_t
- *******************************************************************************
+ ******************************************************************************
* Describes a transport stream and list its associated programs. Build upon
* the informations carried in program association sections
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
- u16 i_stream_id; /* stream id */
+ u16 i_stream_id; /* stream id */
/* Program Association Table status */
- u8 i_PAT_version; /* version number */
- boolean_t b_is_PAT_complete; /* Is the PAT complete ?*/
- u8 i_known_PAT_sections; /* Number of section we received so far */
- byte_t a_known_PAT_sections[32]; /* Already received sections */
+ u8 i_PAT_version; /* version number */
+ boolean_t b_is_PAT_complete; /* Is the PAT complete ?*/
+ u8 i_known_PAT_sections;
+ /* Number of section we received so far */
+ byte_t a_known_PAT_sections[32];
+ /* Already received sections */
/* Program Map Table status */
- boolean_t b_is_PMT_complete; /* Is the PMT complete ?*/
- u8 i_known_PMT_sections; /* Number of section we received so far */
- byte_t a_known_PMT_sections[32]; /* Already received sections */
+ boolean_t b_is_PMT_complete; /* Is the PMT complete ?*/
+ u8 i_known_PMT_sections;
+ /* Number of section we received so far */
+ byte_t a_known_PMT_sections[32];
+ /* Already received sections */
/* Service Description Table status */
- u8 i_SDT_version; /* version number */
- boolean_t b_is_SDT_complete; /* Is the SDT complete ?*/
- u8 i_known_SDT_sections; /* Number of section we received so far */
- byte_t a_known_SDT_sections[32]; /* Already received sections */
+ u8 i_SDT_version; /* version number */
+ boolean_t b_is_SDT_complete; /* Is the SDT complete ?*/
+ u8 i_known_SDT_sections;
+ /* Number of section we received so far */
+ byte_t a_known_SDT_sections[32];
+ /* Already received sections */
/* Programs description */
- int i_pgrm_number; /* Number of program number we have */
- pgrm_descriptor_t ** ap_programs; /* Array of pointers to pgrm */
+ int i_pgrm_number; /* Number of program number we have */
+ pgrm_descriptor_t ** ap_programs; /* Array of pointers to pgrm */
#ifdef STATS
/* Stats */
#endif
} stream_descriptor_t;
-/*******************************************************************************
+/******************************************************************************
* input_netlist_t
- *******************************************************************************/
+ ******************************************************************************/
typedef struct
{
- vlc_mutex_t lock; /* netlist modification lock */
+ vlc_mutex_t lock; /* netlist modification lock */
struct iovec p_ts_free[INPUT_MAX_TS + INPUT_TS_READ_ONCE];
- /* FIFO or LIFO of free TS packets */
+ /* FIFO or LIFO of free TS packets */
ts_packet_t * p_ts_packets;
- /* pointer to the first TS packet we allocated */
+ /* pointer to the first TS packet we allocated */
pes_packet_t * p_pes_free[INPUT_MAX_PES + 1];
- /* FIFO or LIFO of free PES packets */
+ /* FIFO or LIFO of free PES packets */
pes_packet_t * p_pes_packets;
- /* pointer to the first PES packet we allocated */
+ /* pointer to the first PES packet we allocated */
- /* To use the efficiency of the scatter/gather IO operations. We implemented it
- * in 2 ways, as we don't know yet which one is better : as a FIFO (code
+ /* To use the efficiency of the scatter/gather IO operations. We implemented
+ * it in 2 ways, as we don't know yet which one is better : as a FIFO (code
* simplier) or as a LIFO stack (when we doesn't care of the ordering, this
* allow to drastically improve the cache performance) */
#ifdef INPUT_LIFO_TS_NETLIST
#endif
} input_netlist_t;
-/*******************************************************************************
+/******************************************************************************
* input_thread_t
- *******************************************************************************
+ ******************************************************************************
* This structure includes all the local static variables of an input thread,
* including the netlist and the ES descriptors
* Note that p_es must be defined as a static table, otherwise we would have to
* update all reference to it each time the table would be reallocated
- *******************************************************************************/
+ ******************************************************************************/
/* function pointers */
struct input_thread_struct;
typedef struct input_thread_struct
{
/* Thread properties and locks */
- boolean_t b_die; /* 'die' flag */
- boolean_t b_error; /* deadlock */
- vlc_thread_t thread_id; /* id for thread functions */
- vlc_mutex_t programs_lock; /* programs modification lock */
- vlc_mutex_t es_lock; /* es modification lock */
+ boolean_t b_die; /* 'die' flag */
+ boolean_t b_error; /* deadlock */
+ vlc_thread_t thread_id; /* id for thread functions */
+ vlc_mutex_t programs_lock; /* programs modification lock */
+ vlc_mutex_t es_lock; /* es modification lock */
/* Input method description */
- int i_method; /* input method */
- int i_handle; /* file/socket descriptor */
- int i_vlan_id; /* id for vlan method */
- f_open_t p_open; /* pointer to the opener of the method */
- f_read_t p_read; /* pointer to the reading function */
- f_clean_t p_clean; /* pointer to the destroying function */
+ int i_method; /* input method */
+ int i_handle; /* file/socket descriptor */
+ int i_vlan_id; /* id for vlan method */
+ f_open_t p_open; /* pointer to the opener of the method */
+ f_read_t p_read; /* pointer to the reading function */
+ f_clean_t p_clean; /* pointer to the destroying function */
/* General stream description */
- stream_descriptor_t * p_stream; /* PAT tables */
- es_descriptor_t p_es[INPUT_MAX_ES]; /* carried elementary streams */
- pcr_descriptor_t * p_pcr; /* PCR struct used for synchronisation */
+ stream_descriptor_t * p_stream; /* PAT tables */
+ es_descriptor_t p_es[INPUT_MAX_ES]; /* carried elementary streams */
+ pcr_descriptor_t * p_pcr; /* PCR struct used for synchronisation */
/* List of streams to demux */
es_descriptor_t * pp_selected_es[INPUT_MAX_SELECTED_ES];
/* Netlists */
- input_netlist_t netlist; /* see above */
+ input_netlist_t netlist; /* see above */
/* ?? default settings for new decoders */
struct aout_thread_s * p_aout; /* audio output thread structure */
#ifdef STATS
/* Stats */
- count_t c_loops; /* number of loops */
- count_t c_bytes; /* total of bytes read */
- count_t c_payload_bytes; /* total of payload useful bytes */
- count_t c_ts_packets_read; /* total of packets read */
- count_t c_ts_packets_trashed; /* total of trashed packets */
+ count_t c_loops; /* number of loops */
+ count_t c_bytes; /* total of bytes read */
+ count_t c_payload_bytes; /* total of payload useful bytes */
+ count_t c_ts_packets_read; /* total of packets read */
+ count_t c_ts_packets_trashed; /* total of trashed packets */
/* ?? ... other stats */
#endif
} input_thread_t;
/* Input methods */
-#define INPUT_METHOD_NONE 0 /* input thread is inactive */
-#define INPUT_METHOD_TS_FILE 10 /* TS stream is read from a file */
-#define INPUT_METHOD_TS_UCAST 20 /* TS UDP unicast */
-#define INPUT_METHOD_TS_MCAST 21 /* TS UDP multicast */
-#define INPUT_METHOD_TS_BCAST 22 /* TS UDP broadcast */
-#define INPUT_METHOD_TS_VLAN_BCAST 32 /* TS UDP broadcast with VLANs */
-
-/*******************************************************************************
+#define INPUT_METHOD_NONE 0 /* input thread is inactive */
+#define INPUT_METHOD_TS_FILE 10 /* TS stream is read from a file */
+#define INPUT_METHOD_TS_UCAST 20 /* TS UDP unicast */
+#define INPUT_METHOD_TS_MCAST 21 /* TS UDP multicast */
+#define INPUT_METHOD_TS_BCAST 22 /* TS UDP broadcast */
+#define INPUT_METHOD_TS_VLAN_BCAST 32 /* TS UDP broadcast with VLANs */
+
+/******************************************************************************
* input_cfg_t: input thread configuration structure
- *******************************************************************************
+ ******************************************************************************
* This structure is passed as a parameter to input_CreateTtread(). It includes
* several fields describing potential properties of a new object.
* The 'i_properties' field allow to set only a subset of the required
* properties, asking the called function to use default settings for
* the other ones.
- *******************************************************************************/
+ ******************************************************************************/
typedef struct input_cfg_struct
{
u64 i_properties;
/* Input method properties */
- int i_method; /* input method */
- char * psz_filename; /* filename */
- char * psz_hostname; /* server hostname */
- char * psz_ip; /* server IP */
- int i_port; /* port */
- int i_vlan; /* vlan number */
+ int i_method; /* input method */
+ char * psz_filename; /* filename */
+ char * psz_hostname; /* server hostname */
+ char * psz_ip; /* server IP */
+ int i_port; /* port */
+ int i_vlan; /* vlan number */
/* ??... default settings for new decoders */
struct aout_thread_s * p_aout; /* audio output thread structure */
#define INPUT_CFG_PORT (1 << 10)
#define INPUT_CFG_VLAN (1 << 11)
-/******************************************************************************
+/*****************************************************************************
* Prototypes
- ******************************************************************************/
+ *****************************************************************************/
input_thread_t *input_CreateThread ( input_cfg_t *p_cfg );
void input_DestroyThread ( input_thread_t *p_input );
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