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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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14
src/modules/module-rtp/audio.c
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@ -252,7 +252,7 @@ static void rtp_audio_process_playback(void *data)
avail = target_buffer;
}
impl->first = false;
} else if (avail > (int32_t)SPA_MIN(target_buffer * 8, BUFFER_SIZE / stride)) {
} else if (avail > (int32_t)SPA_MIN(target_buffer * 8, impl->buffer_size / stride)) {
pw_log_warn("receiver read overrun %u > %u", avail, target_buffer * 8);
timestamp += avail - target_buffer;
avail = target_buffer;
@ -392,7 +392,7 @@ static int rtp_audio_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)",
@ -402,9 +402,9 @@ static int rtp_audio_receive(struct impl *impl, uint8_t *buffer, ssize_t len,
/* Write overrun only makes sense in constant delay mode. See the
* RTP source module documentation and the rtp_audio_process_playback()
* code for an explanation why. */
if (!impl->direct_timestamp && (filled + samples > BUFFER_SIZE / stride)) {
if (!impl->direct_timestamp && (filled + samples > impl->buffer_size / stride)) {
pw_log_debug("receiver write overrun %u + %u > %u", filled, samples,
BUFFER_SIZE / stride);
impl->buffer_size / stride);
impl->have_sync = false;
} else {
pw_log_trace("got samples:%u", samples);
@ -736,9 +736,9 @@ static void rtp_audio_process_capture(void *data)
* "Driver architecture and workflow" for an explanation why not. */
pw_log_warn("timestamp: expected %u != actual %u", expected_timestamp, actual_timestamp);
impl->have_sync = false;
} else if (filled + wanted > (int32_t)SPA_MIN(impl->target_buffer * 8, BUFFER_SIZE / stride)) {
} else if (filled + wanted > (int32_t)SPA_MIN(impl->target_buffer * 8, impl->buffer_size / stride)) {
pw_log_warn("sender write overrun %u + %u > %u/%u", filled, wanted,
impl->target_buffer * 8, BUFFER_SIZE / stride);
impl->target_buffer * 8, impl->buffer_size / stride);
impl->have_sync = false;
filled = 0;
}
@ -754,7 +754,7 @@ static void rtp_audio_process_capture(void *data)
actual_timestamp, impl->seq, impl->ts_offset, impl->ts_align, impl->ssrc);
spa_ringbuffer_read_update(&impl->ring, actual_timestamp);
spa_ringbuffer_write_update(&impl->ring, actual_timestamp);
memset(impl->buffer, 0, BUFFER_SIZE);
memset(impl->buffer, 0, impl->buffer_size);
impl->have_sync = true;
expected_timestamp = actual_timestamp;
filled = 0;