jeka/utun2
1
0 Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Verify stereo media format and AGC channel balance

Browse Source
This commit is contained in:
evgeny committed 2026-10-13 14:24:59 +02:00
1 parent 8bee8c10ff
commit c251de4f77
2 files changed
+48 -12
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

tests/test_audio_compressor.c
+20 -11
View File
@@ -244,40 +244,49 @@ static void test_streaming_matches_recording(void) {
audio_compressor_destroy(recording); audio_compressor_destroy(streaming);
}
/* Тракт трансляции: усиление текущего mono-кадра перед Opus, live bypass и смена предела gain. */
/* Тракт трансляции: общий gain стереопары перед Opus, live bypass и смена предела gain. */
static void test_live_opus_gain(void) {
struct audio_compressor* ac = audio_compressor_create();
opus_codec_encoder_t* encoder = opus_codec_encoder_create(48000, 1);
opus_codec_decoder_t* decoder = opus_codec_decoder_create(48000, 1);
opus_codec_encoder_t* encoder = opus_codec_encoder_create(48000, 2);
opus_codec_decoder_t* decoder = opus_codec_decoder_create(48000, 2);
TEST(ac && encoder && decoder, "live audio codecs created");
if (!ac || !encoder || !decoder) goto done;
audio_compressor_config_t cfg = {.sample_rate = 48000, .channels = 1, .block_duration_ms = 20,
audio_compressor_config_t cfg = {.sample_rate = 48000, .channels = 2, .block_duration_ms = 20,
.lookback_ms = 200, .lookahead_ms = 0, .max_gain_db = 6, .rise_rate_per_sec = 6,
.release_rate_per_sec = 30, .target_level = 0.25f};
TEST(audio_compressor_configure(ac, &cfg) == 0, "live radio compressor configuration");
TEST(opus_codec_encoder_application_set(encoder, OPUS_CODEC_APP_AUDIO) == 0, "live Opus audio mode");
TEST(opus_codec_encoder_bitrate_set(encoder, 64000) == 0, "live Opus bitrate");
int16_t input[960], compressed[960], decoded[960]; uint8_t packet[1275];
TEST(opus_codec_encoder_bitrate_set(encoder, 128000) == 0, "live Opus bitrate");
int16_t input[1920], compressed[1920], decoded[1920]; uint8_t packet[1275];
size_t allocations = u_get_allocated_count();
for (int frame = 0; frame < 30; frame++) {
for (unsigned i = 0; i < 960; i++) input[i] = (int16_t)(500 * sin((frame * 960 + i) * 2 * M_PI * 440 / 48000));
TEST(audio_compressor_process_frame(ac, input, compressed, 960) == 0, "live current frame compressed");
for (unsigned i = 0; i < 960; i++) {
input[2 * i] = (int16_t)(500 * sin((frame * 960 + i) * 2 * M_PI * 440 / 48000));
input[2 * i + 1] = (int16_t)(125 * sin((frame * 960 + i) * 2 * M_PI * 1100 / 48000));
}
TEST(audio_compressor_process_frame(ac, input, compressed, 1920) == 0, "live current stereo frame compressed");
int length = opus_codec_encode(encoder, compressed, 960, packet, sizeof(packet));
TEST(length > 0, "live compressed frame encoded");
if (length <= 0) goto done;
TEST(opus_codec_decode(decoder, packet, length, decoded, 960) == 960, "live decoded packet has 20ms of PCM");
}
double input_energy = 0, output_energy = 0;
for (unsigned i = 0; i < 960; i++) { input_energy += (double)input[i] * input[i]; output_energy += (double)decoded[i] * decoded[i]; }
for (unsigned i = 0; i < 1920; i++) { input_energy += (double)input[i] * input[i]; output_energy += (double)decoded[i] * decoded[i]; }
TEST(output_energy > input_energy * 2.5 && output_energy < input_energy * 5, "gain survives real Opus roundtrip");
double left_energy = 0, right_energy = 0;
for (unsigned i = 0; i < 960; i++) {
left_energy += (double)decoded[2 * i] * decoded[2 * i];
right_energy += (double)decoded[2 * i + 1] * decoded[2 * i + 1];
}
TEST(left_energy > right_energy * 8 && left_energy < right_energy * 25, "stereo balance survives compressor and Opus");
TEST(u_get_allocated_count() == allocations, "live audio does not accumulate compressor buffers");
audio_compressor_set_enabled(ac, 0);
memcpy(compressed, input, sizeof(input));
TEST(audio_compressor_process_frame(ac, compressed, compressed, 960) == 0, "live bypass in place");
TEST(audio_compressor_process_frame(ac, compressed, compressed, 1920) == 0, "live bypass in place");
TEST(memcmp(input, compressed, sizeof(input)) == 0, "disabled compressor preserves current PCM exactly");
cfg.max_gain_db = 20;
TEST(audio_compressor_configure(ac, &cfg) == 0, "live gain limit changed"); audio_compressor_set_enabled(ac, 1);
for (unsigned frame = 0; frame < 50; frame++) TEST(audio_compressor_process_frame(ac, input, compressed, 960) == 0, "live new gain frame");
for (unsigned frame = 0; frame < 50; frame++) TEST(audio_compressor_process_frame(ac, input, compressed, 1920) == 0, "live new gain frame");
TEST(audio_compressor_gain_db(ac) > 19.9f && audio_compressor_gain_db(ac) <= 20.01f, "live new gain limit applied");
TEST(audio_compressor_output_size(ac) == 0, "live gain update introduces no output backlog");
done: