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pcm: improve buffer size

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This commit is contained in:
Wim Taymans 2018-07-03 22:05:38 +02:00
parent 1276a15143
commit 0f37d84c39
1 changed files with 14 additions and 6 deletions
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20
alsa-plugins/pcm_pipewire.c
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@ -42,7 +42,9 @@
#include <pipewire/pipewire.h>
#define MAX_BUFFERS 8
#define MIN_BUFFERS 3
#define MAX_BUFFERS 64
#define MAX_CHANNELS 32
#define MAX_RATE (48000*8)
@ -336,14 +338,18 @@ static void on_stream_format_changed(void *data, const struct spa_pod *format)
uint8_t buffer[4096];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
uint32_t stride = (io->channels * pw->sample_bits) / 8;
uint32_t buffers = SPA_CLAMP(io->buffer_size / io->period_size, MIN_BUFFERS, MAX_BUFFERS);
uint32_t size = io->period_size * stride;
pw_log_info("buffers %lu %lu %u %u %u", io->buffer_size, io->period_size, buffers, stride, size);
params[n_params++] = spa_pod_builder_object(&b,
t->param.idBuffers, t->param_buffers.Buffers,
":", t->param_buffers.buffers, "iru", io->buffer_size / io->period_size,
SPA_POD_PROP_MIN_MAX(3, 64),
":", t->param_buffers.buffers, "iru", buffers,
SPA_POD_PROP_MIN_MAX(MIN_BUFFERS, MAX_BUFFERS),
":", t->param_buffers.blocks, "i", 1,
":", t->param_buffers.size, "ir", io->period_size * stride,
SPA_POD_PROP_MIN_MAX(io->period_size * stride, INT_MAX),
":", t->param_buffers.size, "ir", size,
SPA_POD_PROP_MIN_MAX(size, INT_MAX),
":", t->param_buffers.stride, "i", stride,
":", t->param_buffers.align, "i", 16);
@ -417,7 +423,9 @@ static int snd_pcm_pipewire_prepare(snd_pcm_ioplug_t *io)
pw->error = false;
pw_stream_connect(pw->stream,
PW_DIRECTION_OUTPUT,
io->stream == SND_PCM_STREAM_PLAYBACK ?
PW_DIRECTION_OUTPUT :
PW_DIRECTION_INPUT,
pw->target,
PW_STREAM_FLAG_AUTOCONNECT |
PW_STREAM_FLAG_MAP_BUFFERS |