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module-rtp: make audio buffer size configurable

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Add new sess.buffer-size property that can override default 1<<22b buffer
size.
This commit is contained in:
Martin Geier 2025-12-10 15:46:17 +01:00 • committed by Carlos Rafael Giani
parent e7563b19b6
commit f935eb255c
4 changed files with 48 additions and 35 deletions
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28
src/modules/module-rtp/opus.c
View file

@ -62,7 +62,7 @@ static void rtp_opus_process_playback(void *data)
avail = target_buffer;
}
impl->first = false;
} else if (avail > (int32_t)SPA_MIN(target_buffer * 8, BUFFER_SIZE2 / stride)) {
} else if (avail > (int32_t)SPA_MIN(target_buffer * 8, impl->buffer_size2 / stride)) {
pw_log_warn("overrun %u > %u", avail, target_buffer * 8);
timestamp += avail - target_buffer;
avail = target_buffer;
@ -83,8 +83,8 @@ static void rtp_opus_process_playback(void *data)
}
spa_ringbuffer_read_data(&impl->ring,
impl->buffer,
BUFFER_SIZE2,
(timestamp * stride) & BUFFER_MASK2,
impl->buffer_size2,
(timestamp * stride) & impl->buffer_mask2,
d[0].data, wanted * stride);
timestamp += wanted;
@ -165,19 +165,19 @@ static int rtp_opus_receive(struct impl *impl, uint8_t *buffer, ssize_t len,
spa_dll_init(&impl->dll);
spa_dll_set_bw(&impl->dll, SPA_DLL_BW_MIN, 128, impl->rate);
memset(impl->buffer, 0, BUFFER_SIZE);
memset(impl->buffer, 0, impl->buffer_size);
impl->have_sync = true;
} else if (expected_write != write) {
pw_log_debug("unexpected write (%u != %u)",
write, expected_write);
}
if (filled + 2880 > (int32_t)(BUFFER_SIZE2 / stride)) {
if (filled + 2880 > (int32_t)(impl->buffer_size2 / stride)) {
pw_log_debug("capture overrun %u + %d > %u", filled, 2880,
BUFFER_SIZE2 / stride);
impl->buffer_size2 / stride);
impl->have_sync = false;
} else {
uint32_t index = (write * stride) & BUFFER_MASK2, end;
uint32_t index = (write * stride) & impl->buffer_mask2, end;
res = opus_multistream_decode_float(dec,
&buffer[hlen], plen,
@ -186,8 +186,8 @@ static int rtp_opus_receive(struct impl *impl, uint8_t *buffer, ssize_t len,
end = index + (res * stride);
/* fold to the lower part of the ringbuffer when overflow */
if (end > BUFFER_SIZE2)
memmove(impl->buffer, &impl->buffer[BUFFER_SIZE2], end - BUFFER_SIZE2);
if (end > impl->buffer_size2)
memmove(impl->buffer, &impl->buffer[impl->buffer_size2], end - impl->buffer_size2);
pw_log_info("receiving %zd len:%d timestamp:%d %u", plen, res, timestamp, index);
samples = res;
@ -302,22 +302,22 @@ static void rtp_opus_process_capture(void *data)
pw_log_info("sync to timestamp:%u seq:%u ts_offset:%u SSRC:%u",
timestamp, impl->seq, impl->ts_offset, impl->ssrc);
impl->ring.readindex = impl->ring.writeindex = expected_timestamp = timestamp;
memset(impl->buffer, 0, BUFFER_SIZE);
memset(impl->buffer, 0, impl->buffer_size);
impl->have_sync = true;
} else {
if (SPA_ABS((int32_t)expected_timestamp - (int32_t)timestamp) > 32) {
pw_log_warn("expected %u != timestamp %u", expected_timestamp, timestamp);
impl->have_sync = false;
} else if (filled + wanted > (int32_t)(BUFFER_SIZE / stride)) {
pw_log_warn("overrun %u + %u > %u", filled, wanted, BUFFER_SIZE / stride);
} else if (filled + wanted > (int32_t)(impl->buffer_size / stride)) {
pw_log_warn("overrun %u + %u > %u", filled, wanted, impl->buffer_size / stride);
impl->have_sync = false;
}
}
spa_ringbuffer_write_data(&impl->ring,
impl->buffer,
BUFFER_SIZE,
(filled * stride) & BUFFER_MASK,
impl->buffer_size,
(filled * stride) & impl->buffer_mask,
SPA_PTROFF(d[0].data, offs, void), wanted * stride);
expected_timestamp += wanted;
spa_ringbuffer_write_update(&impl->ring, expected_timestamp);