You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
2.9 KiB
96 lines
2.9 KiB
3 years ago
|
/*
|
||
|
|
Calf Box, an open source musical instrument.
|
||
|
|
Copyright (C) 2010-2013 Krzysztof Foltman
|
||
|
|
|
||
|
|
This program is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation, either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef CBOX_PREFETCH_PIPE_H
|
||
|
|
#define CBOX_PREFETCH_PIPE_H
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <glib.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
#include <sndfile.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <tarfile.h>
|
||
|
|
|
||
|
|
#define PIPE_MIN_PREFETCH_SIZE_FRAMES 2048
|
||
|
|
|
||
|
|
struct cbox_waveform;
|
||
|
|
|
||
|
|
enum cbox_prefetch_pipe_state
|
||
|
|
{
|
||
|
|
pps_free,
|
||
|
|
pps_opening,
|
||
|
|
pps_active,
|
||
|
|
pps_finished,
|
||
|
|
pps_error,
|
||
|
|
pps_closing,
|
||
|
|
pps_closed,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct cbox_prefetch_pipe
|
||
|
|
{
|
||
|
|
union {
|
||
|
|
volatile enum cbox_prefetch_pipe_state state;
|
||
|
|
uint64_t atomic1;
|
||
|
|
};
|
||
|
|
struct cbox_waveform *waveform;
|
||
|
|
struct cbox_tarfile_sndstream sndstream;
|
||
|
|
int16_t *data;
|
||
|
|
uint32_t buffer_size;
|
||
|
|
uint32_t min_buffer_frames;
|
||
|
|
SF_INFO info;
|
||
|
|
SNDFILE *sndfile;
|
||
|
|
uint32_t file_pos_frame;
|
||
|
|
uint32_t file_loop_start;
|
||
|
|
uint32_t file_loop_end;
|
||
|
|
uint32_t buffer_loop_end;
|
||
|
|
uint32_t play_count, loop_count;
|
||
|
|
size_t write_ptr;
|
||
|
|
size_t produced;
|
||
|
|
size_t consumed;
|
||
|
|
gboolean finished;
|
||
|
|
gboolean returned;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern void cbox_prefetch_pipe_init(struct cbox_prefetch_pipe *pipe, uint32_t buffer_size, uint32_t min_buffer_frames);
|
||
|
|
extern void cbox_prefetch_pipe_consumed(struct cbox_prefetch_pipe *pipe, uint32_t frames);
|
||
|
|
extern void cbox_prefetch_pipe_close(struct cbox_prefetch_pipe *pipe);
|
||
|
|
|
||
|
|
static inline uint32_t cbox_prefetch_pipe_get_remaining(struct cbox_prefetch_pipe *pipe)
|
||
|
|
{
|
||
|
|
assert(pipe->consumed <= pipe->produced);
|
||
|
|
return pipe->produced - pipe->consumed;
|
||
|
|
}
|
||
|
|
|
||
|
|
struct cbox_prefetch_stack
|
||
|
|
{
|
||
|
|
struct cbox_prefetch_pipe *pipes;
|
||
|
|
int *next_free_pipe;
|
||
|
|
int pipe_count;
|
||
|
|
pthread_t thr_prefetch;
|
||
|
|
int last_free_pipe;
|
||
|
|
gboolean finished;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern struct cbox_prefetch_stack *cbox_prefetch_stack_new(int npipes, uint32_t buffer_size, uint32_t min_buffer_frames);
|
||
|
|
extern struct cbox_prefetch_pipe *cbox_prefetch_stack_pop(struct cbox_prefetch_stack *stack, struct cbox_waveform *waveform, uint32_t file_loop_start, uint32_t file_loop_end, uint32_t loop_count);
|
||
|
|
extern void cbox_prefetch_stack_push(struct cbox_prefetch_stack *stack, struct cbox_prefetch_pipe *pipe);
|
||
|
|
extern int cbox_prefetch_stack_get_active_pipe_count(struct cbox_prefetch_stack *stack);
|
||
|
|
extern void cbox_prefetch_stack_destroy(struct cbox_prefetch_stack *stack);
|
||
|
|
|
||
|
|
#endif
|