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/* |
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* FreeBob Streaming API |
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* FreeBob = Firewire (pro-)audio for linux |
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* |
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* http://freebob.sf.net |
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* |
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* Copyright (C) 2005 Pieter Palmers <pieterpalmers@users.sourceforge.net> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program 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 |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* |
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* |
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*/ |
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/* freebob_streaming_private.h |
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* |
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* Private stuff related to the freebob streaming API |
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* |
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*/ |
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#ifndef __FREEBOB_STREAMING_PRIVATE_H__ |
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#define __FREEBOB_STREAMING_PRIVATE_H__ |
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#ifndef DEBUG |
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//#define DEBUG |
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#endif |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define AMDTP_MAX_PACKET_SIZE 2048 |
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#define IEC61883_STREAM_TYPE_MIDI 0x0D |
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#define IEC61883_STREAM_TYPE_SPDIF 0x00 |
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#define IEC61883_STREAM_TYPE_MBLA 0x06 |
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#define IEC61883_AM824_LABEL_MASK 0xFF000000 |
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#define IEC61883_AM824_GET_LABEL(x) (((x) & 0xFF000000) >> 24) |
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#define IEC61883_AM824_SET_LABEL(x,y) ((x) | ((y)<<24)) |
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#define IEC61883_AM824_LABEL_MIDI_NO_DATA 0x80 |
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#define IEC61883_AM824_LABEL_MIDI_1X 0x81 |
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#define IEC61883_AM824_LABEL_MIDI_2X 0x82 |
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#define IEC61883_AM824_LABEL_MIDI_3X 0x83 |
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#define SAMPLE_MAX_24BIT 8388608.0f |
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#include <libfreebob/freebob.h> |
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#include <libraw1394/raw1394.h> |
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#include <libiec61883/iec61883.h> |
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#include <pthread.h> |
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#include <linux/types.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <poll.h> |
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#include <sys/time.h> |
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#include <netinet/in.h> |
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#include <endian.h> |
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#include <pthread.h> |
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#include <semaphore.h> |
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#include <assert.h> |
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#include "ringbuffer.h" |
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#include "freebob_connections.h" |
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#define FALSE 0 |
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#define TRUE 1 |
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/* |
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#define DBC_MASK 0xFF |
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#define DBC_SHIFT 16 |
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#define FREEBOB_STREAMING_EXTRACT_DBC(xx) ((xx & (DBC_MASK << DBC_SHIFT))>>DBC_SHIFT) |
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#define FREEBOB_STREAMING_REMOVE_DBC(xx) (xx & ~(DBC_MASK << DBC_SHIFT)) |
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#define FREEBOB_STREAMING_INSERT_DBC(xx,yy) (yy | (((yy%8) & DBC_MASK) << DBC_SHIFT)) |
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*/ |
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/** |
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* Structure to keep track of the packetizer thread status |
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*/ |
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typedef struct _freebob_packetizer_status freebob_packetizer_status_t; |
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struct _freebob_packetizer_status { |
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sem_t transfer_boundary; |
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sem_t transfer_ack; |
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int retval; |
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int status; |
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int run; |
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int realtime; |
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int priority; |
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pthread_t transfer_thread; |
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}; |
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/** |
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* Device structure |
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*/ |
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struct _freebob_device |
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{ |
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freebob_device_info_t device_info; |
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freebob_handle_t fb_handle; |
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freebob_options_t options; |
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int xrun_detected; |
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int xrun_count; |
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/* packet transfer thread */ |
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freebob_packetizer_status_t packetizer; |
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/* watchdog thread */ |
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int watchdog_check; |
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pthread_t watchdog_thread; |
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/* ISO connections */ |
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freebob_connection_t *sync_master_connection; |
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int nb_connections; |
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int nb_connections_playback; |
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int nb_connections_capture; |
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freebob_connection_t *connections; |
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int nb_capture_streams; |
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freebob_stream_t **capture_streams; |
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int nb_playback_streams; |
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freebob_stream_t **playback_streams; |
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/* |
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* Sync'ed streams are streams that count when determining the period boundary |
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* |
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*/ |
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int nb_synced_capture_streams; |
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freebob_stream_t **synced_capture_streams; |
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int nb_synced_playback_streams; |
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freebob_stream_t **synced_playback_streams; |
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/* |
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* the fd map for polling |
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*/ |
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int nfds; |
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struct pollfd *pfds; |
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freebob_connection_t **fdmap; |
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}; |
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int freebob_streaming_prefill_playback_streams(freebob_device_t *dev); |
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int freebob_streaming_stop_iso(freebob_device_t *dev); |
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int freebob_streaming_start_iso(freebob_device_t *dev); |
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int freebob_streaming_set_stream_buffer(freebob_device_t *dev, freebob_stream_t *dst, char *b, freebob_streaming_buffer_type t); |
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void freebob_streaming_free_stream_buffer(freebob_device_t* dev, freebob_stream_t *dst); |
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/** |
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* Registers the stream in the stream list |
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*/ |
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void freebob_streaming_register_capture_stream(freebob_device_t *dev, freebob_stream_t *stream); |
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void freebob_streaming_register_playback_stream(freebob_device_t *dev, freebob_stream_t *stream); |
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/** |
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* Thread related |
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*/ |
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int freebob_streaming_start_thread(freebob_device_t *dev); |
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int freebob_streaming_stop_thread(freebob_device_t *dev); |
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void * freebob_iso_packet_iterator(void *arg); |
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void *freebob_streaming_watchdog_thread (void *arg); |
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int freebob_streaming_start_watchdog (freebob_device_t *dev); |
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void freebob_streaming_stop_watchdog (freebob_device_t *dev); |
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void freebob_streaming_print_bufferfill(freebob_device_t *dev); |
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/** |
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* freebob_encode_stream_to_events |
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* |
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* Encodes events from a buffer to AM824 events, according to a specific stream specification. |
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* |
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* This will read nsamples samples from the stream ringbuffer, and encode them into events conform |
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* the stream specification. |
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* |
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* NOTE: the buffer has to be big enough |
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* |
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* connection : The connection the stream belongs to |
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* stream : Contains the stream structure |
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* events : Pointer to a buffer that will hold the encoded events |
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* nsamples : The number of samples to encode |
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* dbc : Data Block Counter, needed for mux of midi streams |
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*/ |
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/* are static inline now |
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int |
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freebob_encode_stream_to_events(freebob_connection_t *connection, |
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freebob_stream_t *stream, |
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quadlet_t* events, |
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unsigned int nsamples, |
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unsigned int dbc |
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); |
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*/ |
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/** |
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* freebob_decode_events_to_stream |
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* |
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* Decodes events from a buffer of AM824 events, to samples of the correct type in a stream structure. |
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* Skips events marked as empty. |
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* |
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* This will decode nframes at maximum. |
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* |
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* connection : The connection the stream belongs to |
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* stream : Contains the stream structure |
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* events : Pointer to a buffer that holds the encoded events |
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* nsamples : The number of samples available |
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* dbc : Data Block Counter, needed for demux of midi streams |
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*/ |
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/* are static inline now |
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int |
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freebob_decode_events_to_stream(freebob_connection_t *connection, |
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freebob_stream_t *stream, |
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quadlet_t* events, |
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unsigned int nsamples, |
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unsigned int dbc |
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); |
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*/ |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif |
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