bsncubed
5b0d7c9ba4
- main/audio_out: one converter instance per source (own rate converter state): s16 any rate/channels -> 48 kHz stereo int32 -> ring. - player_write(src, ...) only writes for the active source, drops the rest; player_src_t is public in player.h. - HLS decoder uses audio_out (no behaviour change). - Verified: HLS still sample exact (441344 -> 480375 frames per 10.008 s segment), buffer ~4 s, 0 underruns. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
#include "player.h"
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#include <string.h>
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#include "aes67_cfg.h"
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#include "aes67_tx.h"
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#include "aes67_web.h"
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#include "audio_ring.h"
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#include "decoder.h"
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#include "hls.h"
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#include "spotify.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#define RATE 48000
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#define CHANNELS 2
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#define RING_FRAMES (4 * RATE) // 4 s in PSRAM
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#define PREFILL_FRAMES (RATE) // 1 s before (re)starting output
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static const char *TAG = "player";
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static const char *const SRC_NAME[] = { "tone", "off", "hls", "spotify" };
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static volatile player_src_t s_src = PLAYER_SRC_OFF;
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static volatile bool s_playing; // ring output running (after prefill)
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static volatile bool s_flush; // consumer drops buffered audio on the next read
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static player_src_t mode_of(const char *m)
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{
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return !strcmp(m, "tone") ? PLAYER_SRC_TONE : !strcmp(m, "hls") ? PLAYER_SRC_HLS :
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!strcmp(m, "spotify") ? PLAYER_SRC_SPOTIFY : !strcmp(m, "auto") ? PLAYER_SRC_HLS /* failover: step 7 */ : PLAYER_SRC_OFF;
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}
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// AES67 TX pull callback (TX task, must not block). Silence while buffering or off: not an underrun.
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static size_t player_read(int32_t *buf, size_t frames)
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{
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if (s_flush) {
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audio_ring_flush();
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s_flush = false;
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s_playing = false;
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}
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if (s_src == PLAYER_SRC_OFF || s_src == PLAYER_SRC_SPOTIFY) { // Spotify: step 7 (cspot)
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memset(buf, 0, frames * CHANNELS * sizeof(int32_t));
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return frames;
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}
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if (!s_playing) {
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if (audio_ring_level() < PREFILL_FRAMES) {
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memset(buf, 0, frames * CHANNELS * sizeof(int32_t));
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return frames;
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}
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s_playing = true;
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}
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size_t got = audio_ring_read(buf, frames);
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if (got < frames) {
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s_playing = false; // ran dry: underrun (counted by TX), prefill again
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}
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return got;
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}
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void player_apply(const cJSON *source)
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{
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player_src_t src = mode_of(cJSON_GetObjectItemCaseSensitive(source, "mode")->valuestring);
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if (src == s_src) {
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return;
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}
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s_src = src;
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s_flush = true;
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// The test tone is TX's own (phase-locked to PTP); everything else goes through player_read.
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aes67_tx_set_source(src == PLAYER_SRC_TONE ? NULL : player_read);
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ESP_LOGI(TAG, "source: %s", SRC_NAME[src]);
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}
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// Source side: write converted 48 kHz frames, waiting for space at playback speed.
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// Frames of a source that is not active are dropped.
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size_t player_write(player_src_t src, const int32_t *frames, size_t n)
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{
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size_t done = 0;
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while (done < n) {
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if (s_src != src) {
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return n; // not the active source: drop
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}
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size_t w = audio_ring_write(frames + done * CHANNELS, n - done);
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if (!w) {
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vTaskDelay(pdMS_TO_TICKS(20));
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}
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done += w;
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}
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return done;
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}
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static void player_status(cJSON *st)
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{
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const char *state = s_src == PLAYER_SRC_TONE ? "playing" : s_src == PLAYER_SRC_OFF ? "idle" :
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s_src == PLAYER_SRC_SPOTIFY ? "not implemented" : s_playing ? "playing" : "buffering";
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cJSON_AddStringToObject(st, "active_source", SRC_NAME[s_src]);
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cJSON_AddStringToObject(st, "source_state", state);
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cJSON_AddStringToObject(st, "spotify_state", spotify_state());
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cJSON_AddNumberToObject(st, "buffer_ms", (double)(audio_ring_level() * 1000 / RATE));
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}
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esp_err_t player_init(void)
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{
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esp_err_t err = audio_ring_init(RING_FRAMES, CHANNELS);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "ring buffer: %s", esp_err_to_name(err));
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return err;
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}
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cJSON *src = cfg_get("source");
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s_src = (player_src_t)-1;
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player_apply(src);
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cJSON_Delete(src);
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err = decoder_init();
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if (err != ESP_OK) {
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return err;
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}
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spotify_init();
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err = hls_start(decoder_feed);
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if (err != ESP_OK) {
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return err;
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}
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return status_register(player_status);
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}
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