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output_bt.c
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output_bt.c
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/*
* Squeezelite for esp32
*
* (c) Sebastien 2019
* Philippe G. 2019, philippe_44@outlook.com
*
* This software is released under the MIT License.
* https://opensource.org/licenses/MIT
*
*/
#include "driver/gpio.h"
#include "squeezelite.h"
#include "equalizer.h"
#include "perf_trace.h"
#include "platform_config.h"
#include <assert.h>
extern struct outputstate output;
extern struct buffer *outputbuf;
extern struct buffer *streambuf;
extern u8_t *silencebuf;
#define LOCK mutex_lock(outputbuf->mutex)
#define UNLOCK mutex_unlock(outputbuf->mutex)
#define LOCK_S mutex_lock(streambuf->mutex)
#define UNLOCK_S mutex_unlock(streambuf->mutex)
#define FRAME_BLOCK MAX_SILENCE_FRAMES
#define STATS_REPORT_DELAY_MS 15000
extern void hal_bluetooth_init(const char * options);
extern void hal_bluetooth_stop(void);
extern u8_t config_spdif_gpio;
static log_level loglevel;
static bool running = false;
static uint8_t *btout;
static frames_t oframes;
static bool stats;
static int _write_frames(frames_t out_frames, bool silence, s32_t gainL, s32_t gainR,
s32_t cross_gain_in, s32_t cross_gain_out, ISAMPLE_T **cross_ptr);
#define DECLARE_ALL_MIN_MAX \
DECLARE_MIN_MAX(req);\
DECLARE_MIN_MAX(rec);\
DECLARE_MIN_MAX(bt);\
DECLARE_MIN_MAX(under);\
DECLARE_MIN_MAX(stream_buf);\
DECLARE_MIN_MAX_DURATION(lock_out_time)
#define RESET_ALL_MIN_MAX \
RESET_MIN_MAX(bt); \
RESET_MIN_MAX(req); \
RESET_MIN_MAX(rec); \
RESET_MIN_MAX(under); \
RESET_MIN_MAX(stream_buf); \
RESET_MIN_MAX_DURATION(lock_out_time)
DECLARE_ALL_MIN_MAX;
void output_init_bt(log_level level, char *device, unsigned output_buf_size, char *params, unsigned rates[], unsigned rate_delay, unsigned idle) {
loglevel = level;
running = true;
output.write_cb = &_write_frames;
hal_bluetooth_init(device);
char *p = config_alloc_get_default(NVS_TYPE_STR, "stats", "n", 0);
stats = p && (*p == '1' || *p == 'Y' || *p == 'y');
free(p);
}
void output_close_bt(void) {
LOCK;
running = false;
UNLOCK;
hal_bluetooth_stop();
equalizer_close();
}
static int _write_frames(frames_t out_frames, bool silence, s32_t gainL, s32_t gainR,
s32_t cross_gain_in, s32_t cross_gain_out, ISAMPLE_T **cross_ptr) {
assert(btout != NULL);
if (!silence ) {
if (output.fade == FADE_ACTIVE && output.fade_dir == FADE_CROSS && *cross_ptr) {
_apply_cross(outputbuf, out_frames, cross_gain_in, cross_gain_out, cross_ptr);
}
if (gainL != FIXED_ONE || gainR!= FIXED_ONE) {
_apply_gain(outputbuf, out_frames, gainL, gainR);
}
#if BYTES_PER_FRAME == 4
memcpy(btout + oframes * BYTES_PER_FRAME, outputbuf->readp, out_frames * BYTES_PER_FRAME);
#else
{
frames_t count = out_frames;
s32_t *_iptr = (s32_t*) outputbuf->readp;
s16_t *_optr = (s16_t*) (btout + oframes * BYTES_PER_FRAME);
while (count--) {
*_optr++ = *_iptr++ >> 16;
*_optr++ = *_iptr++ >> 16;
}
}
#endif
} else {
u8_t *buf = silencebuf;
memcpy(btout + oframes * BYTES_PER_FRAME, buf, out_frames * BYTES_PER_FRAME);
}
output_visu_export((s16_t*) (btout + oframes * BYTES_PER_FRAME), out_frames, output.current_sample_rate, silence, (gainL + gainR) / 2);
oframes += out_frames;
return (int)out_frames;
}
int32_t output_bt_data(uint8_t *data, int32_t len) {
int32_t iframes = len / BYTES_PER_FRAME, start_timer = 0;
if (iframes <= 0 || data == NULL || !running) {
return 0;
}
btout = data;
oframes = 0;
// This is how the BTC layer calculates the number of bytes to
// for us to send. (BTC_SBC_DEC_PCM_DATA_LEN * sizeof(OI_INT16) - availPcmBytes
SET_MIN_MAX(len,req);
TIME_MEASUREMENT_START(start_timer);
LOCK;
SET_MIN_MAX_SIZED(_buf_used(outputbuf),bt,outputbuf->size);
output.device_frames = 0;
output.updated = gettime_ms();
output.frames_played_dmp = output.frames_played;
_output_frames(iframes);
output.frames_in_process = oframes;
UNLOCK;
equalizer_process(data, oframes * BYTES_PER_FRAME, output.current_sample_rate);
SET_MIN_MAX(TIME_MEASUREMENT_GET(start_timer),lock_out_time);
SET_MIN_MAX((len-oframes*BYTES_PER_FRAME), rec);
TIME_MEASUREMENT_START(start_timer);
return oframes * BYTES_PER_FRAME;
}
void output_bt_tick(void) {
static time_t lastTime=0;
if (!running) return;
LOCK_S;
SET_MIN_MAX_SIZED(_buf_used(streambuf), stream_buf, streambuf->size);
UNLOCK_S;
if (stats && lastTime <= gettime_ms() )
{
lastTime = gettime_ms() + STATS_REPORT_DELAY_MS;
LOG_INFO("Statistics over %u secs. " , STATS_REPORT_DELAY_MS/1000);
LOG_INFO(" +==========+==========+================+=====+================+");
LOG_INFO(" | max | min | average | avg | count |");
LOG_INFO(" | (bytes) | (bytes) | (bytes) | pct | |");
LOG_INFO(" +==========+==========+================+=====+================+");
LOG_INFO(LINE_MIN_MAX_FORMAT,LINE_MIN_MAX("stream avl",stream_buf));
LOG_INFO(LINE_MIN_MAX_FORMAT,LINE_MIN_MAX("output avl",bt));
LOG_INFO(LINE_MIN_MAX_FORMAT,LINE_MIN_MAX("requested",req));
LOG_INFO(LINE_MIN_MAX_FORMAT,LINE_MIN_MAX("received",rec));
LOG_INFO(LINE_MIN_MAX_FORMAT,LINE_MIN_MAX("underrun",under));
LOG_INFO( " +==========+==========+================+=====+================+");
LOG_INFO("\n");
LOG_INFO(" ==========+==========+===========+===========+ ");
LOG_INFO(" max (us) | min (us) | avg(us) | count | ");
LOG_INFO(" ==========+==========+===========+===========+ ");
LOG_INFO(LINE_MIN_MAX_DURATION_FORMAT,LINE_MIN_MAX_DURATION("Out Buf Lock",lock_out_time));
LOG_INFO(" ==========+==========+===========+===========+");
RESET_ALL_MIN_MAX;
}
}