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audioconvert: Improve buffer params 

Scale the default size of the buffer with the sample rate conversion
factor.
This commit is contained in:
Wim Taymans 2022-08-03 16:40:22 +02:00
parent 6144d037ce
commit 6c5ec409bf
1 changed files with 31 additions and 1 deletions
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32
spa/plugins/audioconvert/audioconvert.c
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@ -1725,21 +1725,51 @@ impl_node_port_enum_params(void *object, int seq,
param = spa_format_audio_raw_build(&b, id, &port->format.info.raw);
break;
case SPA_PARAM_Buffers:
{
uint32_t size;
struct dir *dir;
if (!port->have_format)
return -EIO;
if (result.index > 0)
return 0;
dir = &this->dir[direction];
if (dir->mode == SPA_PARAM_PORT_CONFIG_MODE_dsp) {
/* DSP ports always use the quantum_limit as the buffer
* size. */
size = this->quantum_limit;
} else {
uint32_t irate, orate;
/* Convert ports are scaled so that they can always
* provide one quantum of data */
irate = dir->format.info.raw.rate;
/* collect the other port rate */
dir = &this->dir[SPA_DIRECTION_REVERSE(direction)];
if (dir->mode == SPA_PARAM_PORT_CONFIG_MODE_dsp)
orate = this->io_position ? this->io_position->clock.rate.denom : DEFAULT_RATE;
else
orate = dir->format.info.raw.rate;
/* always keep some extra room for adaptive resampling */
size = this->quantum_limit * 2;
/* scale the buffer size when we can. */
if (irate != 0 && orate != 0)
size = size * (irate + orate - 1) / orate;
}
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_ParamBuffers, id,
SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(2, 1, MAX_BUFFERS),
SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(port->blocks),
SPA_PARAM_BUFFERS_size, SPA_POD_CHOICE_RANGE_Int(
this->quantum_limit * port->stride,
size * port->stride,
16 * port->stride,
INT32_MAX),
SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->stride));
break;
}
case SPA_PARAM_Meta:
switch (result.index) {
case 0: