mirror of
https://github.com/Silicondust/libhdhomerun.git
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114 lines
4.8 KiB
C
114 lines
4.8 KiB
C
/*
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* hdhomerun_video.h
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*
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* Copyright © 2006-2022 Silicondust USA Inc. <www.silicondust.com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct hdhomerun_video_sock_t;
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struct hdhomerun_video_stats_t {
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uint32_t packet_count;
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uint32_t network_error_count;
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uint32_t transport_error_count;
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uint32_t sequence_error_count;
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uint32_t overflow_error_count;
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};
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#define TS_PACKET_SIZE 188
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#define VIDEO_DATA_PACKET_SIZE (188 * 7)
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#define VIDEO_DATA_BUFFER_SIZE_1S (20000000 / 8)
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#define VIDEO_RTP_DATA_PACKET_SIZE ((188 * 7) + 12)
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/*
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* Create a video/data socket.
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*
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* uint16_t listen_port: Port number to listen on. Set to 0 to auto-select.
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* size_t buffer_size: Size of receive buffer. For 1 second of buffer use VIDEO_DATA_BUFFER_SIZE_1S.
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* struct hdhomerun_debug_t *dbg: Pointer to debug logging object. May be NULL.
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*
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* Returns a pointer to the newly created control socket.
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*
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* When no longer needed, the socket should be destroyed by calling hdhomerun_control_destroy.
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*/
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extern LIBHDHOMERUN_API struct hdhomerun_video_sock_t *hdhomerun_video_create(uint16_t listen_port, bool allow_port_reuse, size_t buffer_size, struct hdhomerun_debug_t *dbg);
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extern LIBHDHOMERUN_API struct hdhomerun_video_sock_t *hdhomerun_video_create_ex(const struct sockaddr *listen_addr, bool allow_port_reuse, size_t buffer_size, struct hdhomerun_debug_t *dbg);
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extern LIBHDHOMERUN_API void hdhomerun_video_destroy(struct hdhomerun_video_sock_t *vs);
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/*
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* Configure to send a keepalive packet every second.
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*/
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extern LIBHDHOMERUN_API void hdhomerun_video_set_keepalive(struct hdhomerun_video_sock_t *vs, uint32_t remote_addr, uint16_t remote_port, uint32_t lockkey);
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extern LIBHDHOMERUN_API void hdhomerun_video_set_keepalive_ex(struct hdhomerun_video_sock_t *vs, const struct sockaddr *remote_addr, uint32_t lockkey);
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/*
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* Get the port the socket is listening on.
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*
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* Returns 16-bit port with native endianness, or 0 on error.
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*/
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extern LIBHDHOMERUN_API uint16_t hdhomerun_video_get_local_port(struct hdhomerun_video_sock_t *vs);
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/*
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* Join/leave multicast group.
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*/
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extern LIBHDHOMERUN_API int hdhomerun_video_join_multicast_group(struct hdhomerun_video_sock_t *vs, uint32_t multicast_ip, uint32_t local_ip);
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extern LIBHDHOMERUN_API int hdhomerun_video_join_multicast_group_ex(struct hdhomerun_video_sock_t *vs, const struct sockaddr *multicast_addr, const struct sockaddr *local_addr);
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extern LIBHDHOMERUN_API void hdhomerun_video_leave_multicast_group(struct hdhomerun_video_sock_t *vs, uint32_t multicast_ip, uint32_t local_ip);
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extern LIBHDHOMERUN_API void hdhomerun_video_leave_multicast_group_ex(struct hdhomerun_video_sock_t *vs, const struct sockaddr *multicast_addr, const struct sockaddr *local_addr);
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/*
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* Read data from buffer.
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*
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* size_t max_size: The maximum amount of data to be returned.
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* size_t *pactual_size: The caller-supplied pactual_size value will be updated to contain the amount
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* of data available to the caller.
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*
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* Returns a pointer to the data, or NULL if no data is available.
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* The data will remain valid until another call to hdhomerun_video_recv.
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*
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* The amount of data returned will always be a multiple of VIDEO_DATA_PACKET_SIZE (1316).
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* Attempting to read a single TS frame (188 bytes) will not return data as it is less than
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* the minimum size.
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*
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* The buffer is implemented as a ring buffer. It is possible for this function to return a small
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* amount of data when more is available due to the wrap-around case.
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*/
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extern LIBHDHOMERUN_API uint8_t *hdhomerun_video_recv(struct hdhomerun_video_sock_t *vs, size_t max_size, size_t *pactual_size);
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/*
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* Flush the buffer.
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*/
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extern LIBHDHOMERUN_API void hdhomerun_video_flush(struct hdhomerun_video_sock_t *vs);
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/*
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* Debug print internal stats.
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*/
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extern LIBHDHOMERUN_API void hdhomerun_video_debug_print_stats(struct hdhomerun_video_sock_t *vs);
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extern LIBHDHOMERUN_API void hdhomerun_video_get_stats(struct hdhomerun_video_sock_t *vs, struct hdhomerun_video_stats_t *stats);
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/*
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* Internal use only.
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*/
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extern LIBHDHOMERUN_API struct hdhomerun_sock_t *hdhomerun_video_get_sock(struct hdhomerun_video_sock_t *vs);
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#ifdef __cplusplus
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}
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#endif
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