Mirror/squeezelite-esp32
1
0
Fork 0
mirror of https://github.com/sle118/squeezelite-esp32.git synced 2025-12-08 04:27:12 +03:00
Code Issues Packages Projects Releases Wiki Activity

Continue to tweak AirPlay to SPDIF (still drifting)

Browse Source
This commit is contained in:
philippe44
2019-08-21 23:47:44 -07:00
parent d063457616
commit 0ee2783b49
2 changed files with 32 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
components/squeezelite/output_i2s.c
View File

@@ -84,7 +84,7 @@ sure that using rate_delay would fix that
typedef enum { DAC_ON = 0, DAC_OFF, DAC_POWERDOWN, DAC_VOLUME } dac_cmd_e;
// must have an integer ratio with FRAME_BLOCK
// must have an integer ratio with FRAME_BLOCK (see spdif comment)
#define DMA_BUF_LEN 512
#define DMA_BUF_COUNT 12
@@ -116,6 +116,7 @@ static int bytes_per_frame;
static thread_type thread, stats_thread;
static u8_t *obuf;
static bool spdif;
static size_t dma_buf_frames;
DECLARE_ALL_MIN_MAX;
@@ -268,27 +269,37 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
};
i2s_config.sample_rate = output.current_sample_rate * 2;
i2s_config.bits_per_sample = 32;
// Normally counted in frames, but 16 sample are transformed into 32 bits in spdif
i2s_config.dma_buf_len = DMA_BUF_LEN / 2;
i2s_config.dma_buf_count = DMA_BUF_COUNT * 2;
/*
In DMA, we have room for (LEN * COUNT) frames of 32 bits samples that
we push at sample_rate * 2. Each of these peuso-frames is a single true
audio frame. So the real depth is true frames is (LEN * COUNT / 2)
*/
dma_buf_frames = DMA_BUF_COUNT * DMA_BUF_LEN / 2;
} else {
pin_config = (i2s_pin_config_t) { .bck_io_num = CONFIG_I2S_BCK_IO, .ws_io_num = CONFIG_I2S_WS_IO,
.data_out_num = CONFIG_I2S_DO_IO, .data_in_num = -1 //Not used
};
i2s_config.sample_rate = output.current_sample_rate;
i2s_config.bits_per_sample = bytes_per_frame * 8 / 2;
// Counted in frames (but i2s allocates a buffer <= 4092 bytes)
i2s_config.dma_buf_len = DMA_BUF_LEN;
i2s_config.dma_buf_count = DMA_BUF_COUNT;
dma_buf_frames = DMA_BUF_COUNT * DMA_BUF_LEN;
#ifdef TAS575x
gpio_pad_select_gpio(CONFIG_SPDIF_DO_IO);
gpio_set_direction(CONFIG_SPDIF_DO_IO, GPIO_MODE_OUTPUT);
gpio_set_level(CONFIG_SPDIF_DO_IO, 0);
#endif
}
i2s_config.mode = I2S_MODE_MASTER | I2S_MODE_TX;
i2s_config.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT;
i2s_config.communication_format = I2S_COMM_FORMAT_I2S| I2S_COMM_FORMAT_I2S_MSB;
// in case of overflow, do not replay old buffer
i2s_config.tx_desc_auto_clear = true;
i2s_config.dma_buf_count = DMA_BUF_COUNT;
// Counted in frames (but i2s allocates a buffer <= 4092 bytes)
i2s_config.dma_buf_len = DMA_BUF_LEN;
i2s_config.use_apll = true;
i2s_config.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1; //Interrupt level 1
@@ -391,7 +402,6 @@ static int _i2s_write_frames(frames_t out_frames, bool silence, s32_t gainL, s32
return out_frames;
}
/****************************************************************************************
* Main output thread
*/
@@ -415,7 +425,7 @@ static void *output_thread_i2s() {
TIME_MEASUREMENT_START(timer_start);
LOCK;
// manage led display
if (state != output.state) {
LOG_INFO("Output state is %d", output.state);
@@ -441,11 +451,11 @@ static void *output_thread_i2s() {
output.updated = gettime_ms();
output.frames_played_dmp = output.frames_played;
// try to estimate how much we have consumed from the DMA buffer
output.device_frames = DMA_BUF_COUNT * DMA_BUF_LEN - ((output.updated - fullness) * output.current_sample_rate) / 1000;
// try to estimate how much we have consumed from the DMA buffer (calculation is incorrect at the very beginning ...)
output.device_frames = dma_buf_frames - ((output.updated - fullness) * output.current_sample_rate) / 1000;
oframes = _output_frames( iframes );
output.frames_in_process = oframes;
SET_MIN_MAX_SIZED(oframes,rec,iframes);
SET_MIN_MAX_SIZED(_buf_used(outputbuf),o,outputbuf->size);
SET_MIN_MAX_SIZED(_buf_used(streambuf),s,streambuf->size);
@@ -547,6 +557,11 @@ static void *output_thread_i2s_stats() {
LOG_INFO(" ----------+----------+-----------+-----------+");
RESET_ALL_MIN_MAX;
}
LOG_INFO("Heap internal:%zu (min:%zu) external:%zu (min:%zu)",
heap_caps_get_free_size(MALLOC_CAP_INTERNAL),
heap_caps_get_minimum_free_size(MALLOC_CAP_INTERNAL),
heap_caps_get_free_size(MALLOC_CAP_SPIRAM),
heap_caps_get_minimum_free_size(MALLOC_CAP_SPIRAM));
usleep(STATS_PERIOD_MS *1000);
}
return NULL;