From 0ad80f3906bc6cbd4a2c360e9a745fb6ab66b2c9 Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Mon, 26 Oct 2026 15:58:11 +0100
Subject: [PATCH] Clarify frame assembly and keep reference PCM arithmetic
 signed

---
 src/call/call_headless.c         | 1 +
 tests/test_call_headless_queue.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/call/call_headless.c b/src/call/call_headless.c
index 235dd5ea..c5d8af36 100644
--- a/src/call/call_headless.c
+++ b/src/call/call_headless.c
@@ -118,6 +118,7 @@ static void ca_send_raw(struct call_audio_client* cli, const uint8_t* data, size
     }
 }
 
+/* Собрать header+PCM до обращения к очереди, чтобы overflow не оставил часть фрейма. */
 static void ca_write_frame(struct call_audio_client* cli, uint8_t type, uint64_t call_id,
                            const uint8_t* data, uint16_t len) {
     if (len > CA_PCM_FRAME_BYTES || (len && !data)) {
diff --git a/tests/test_call_headless_queue.c b/tests/test_call_headless_queue.c
index 57decadf..2c580b21 100644
--- a/tests/test_call_headless_queue.c
+++ b/tests/test_call_headless_queue.c
@@ -82,7 +82,7 @@ static void fixture_start(struct queue_fixture* f) {
 /* Reference decoder видит и отброшенные кадры: его Opus-состояние совпадает с принимающим. */
 static void emit_frame(struct queue_fixture* f, int retained) {
     int16_t pcm[CA_FRAME_SAMPLES], decoded[CA_FRAME_SAMPLES];
-    for (int i = 0; i < CA_FRAME_SAMPLES; ++i) pcm[i] = (int16_t)((f->sequence * 73 + i * 31) % 6000 - 3000);
+    for (int i = 0; i < CA_FRAME_SAMPLES; ++i) pcm[i] = (int16_t)(((int)f->sequence * 73 + i * 31) % 6000 - 3000);
     ++f->sequence;
     uint8_t opus[256];
     int len = opus_codec_encode(f->encoder, pcm, CA_FRAME_SAMPLES, opus, sizeof(opus)); CHECK(len > 0);