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audioconvert: add support of volume ramp scale parameter

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- Add support for Linear and Cubic volume scales
- Also start treating a "zero" value of volume ramp parameters as invalid
This commit is contained in:
Ashok Sidipotu 2023-03-28 10:38:41 +05:30 • committed by Wim Taymans
parent 7b91d506f1
commit 8bfafaeca2
3 changed files with 78 additions and 47 deletions
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106
spa/plugins/audioconvert/audioconvert.c
View file

@ -46,8 +46,6 @@ static struct spa_log_topic *log_topic = &SPA_LOG_TOPIC(0, "spa.audioconvert");
#define DEFAULT_MUTE false
#define DEFAULT_VOLUME VOLUME_NORM
#define INVALID -1
struct volumes {
bool mute;
uint32_t n_volumes;
@ -71,10 +69,11 @@ struct props {
struct volumes channel;
struct volumes soft;
struct volumes monitor;
int volume_ramp_samples;
int volume_ramp_step_samples;
int volume_ramp_time;
int volume_ramp_step_time;
unsigned int volume_ramp_samples;
unsigned int volume_ramp_step_samples;
unsigned int volume_ramp_time;
unsigned int volume_ramp_step_time;
enum spa_audio_volume_ramp_scale scale;
unsigned int have_soft_volume:1;
unsigned int mix_disabled:1;
unsigned int resample_disabled:1;
@ -871,9 +870,9 @@ static int parse_prop_params(struct impl *this, struct spa_pod *params)
static unsigned int get_ramp_samples(struct impl *this)
{
struct props p = this->props;
if (p.volume_ramp_samples != INVALID)
if (p.volume_ramp_samples)
return p.volume_ramp_samples;
else if (p.volume_ramp_time != INVALID) {
else if (p.volume_ramp_time) {
struct dir *d = &this->dir[SPA_DIRECTION_OUTPUT];
unsigned int sample_rate = d->format.info.raw.rate;
unsigned int samples = (p.volume_ramp_time * sample_rate) / 1000;
@ -886,9 +885,9 @@ static unsigned int get_ramp_samples(struct impl *this)
static unsigned int get_ramp_step_samples(struct impl *this)
{
struct props p = this->props;
if (p.volume_ramp_step_samples != INVALID)
if (p.volume_ramp_step_samples)
return p.volume_ramp_step_samples;
else if (p.volume_ramp_step_time != INVALID) {
else if (p.volume_ramp_step_time) {
struct dir *d = &this->dir[SPA_DIRECTION_OUTPUT];
int sample_rate = d->format.info.raw.rate;
/* convert the step time which is in nano seconds to seconds */
@ -899,6 +898,17 @@ static unsigned int get_ramp_step_samples(struct impl *this)
return 0;
}
static double get_volume_at_scale(struct impl *this, double value)
{
struct props p = this->props;
if (p.scale == SPA_AUDIO_VOLUME_RAMP_LINEAR)
return value;
else if (p.scale == SPA_AUDIO_VOLUME_RAMP_CUBIC)
return (value * value * value);
return 0.0;
}
static struct spa_pod *generate_vol_ramp_up_sequence(struct impl *this, const struct props *p)
{
uint8_t buffer[64 * 1024 * 10];
@ -912,15 +922,16 @@ static struct spa_pod *generate_vol_ramp_up_sequence(struct impl *this, const st
spa_pod_builder_init(&b, buffer, sizeof(buffer));
spa_pod_builder_push_sequence(&b, &f[0], 0);
spa_log_info(this->log, "generating volume ramp up sequence from %f to %f with a step value %f",
p->prev_volume,p->volume, volume_step);
spa_log_info(this->log, "generating ramp up sequence from %f to %f with a step value %f at scale %d",
p->prev_volume,p->volume, volume_step, p->scale);
do {
// spa_log_info(this->log, "volume level %f offset %d", volume_accum, volume_offs);
// spa_log_info(this->log, "volume level %f offset %d", get_volume_at_scale(this, volume_accum), volume_offs);
spa_pod_builder_control(&b, volume_offs, SPA_CONTROL_Properties);
spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Props, 0,
SPA_PROP_volume, SPA_POD_Float(volume_accum));
SPA_PROP_volume,
SPA_POD_Float(get_volume_at_scale(this, volume_accum)));
volume_accum += volume_step;
volume_offs += ramp_step_samples;
} while (volume_accum < p->volume);
@ -941,14 +952,16 @@ static struct spa_pod *generate_vol_ramp_down_sequence(struct impl *this, const
spa_pod_builder_init(&b, buffer, sizeof(buffer));
spa_pod_builder_push_sequence(&b, &f[0], 0);
spa_log_info(this->log, "generating volume ramp down sequence from %f to %f with a step value %f",
p->prev_volume, p->volume, volume_step);
spa_log_info(this->log, "generating ramp down sequence from %f to %f with a step value %f at scale %d",
p->prev_volume, p->volume, volume_step, p->scale);
do {
// spa_log_info(this->log, "volume level %f offset %d", volume_accum, volume_offs);
// spa_log_info(this->log, "volume level %f offset %d", get_volume_at_scale(this, volume_accum), volume_offs);
spa_pod_builder_control(&b, volume_offs, SPA_CONTROL_Properties);
spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Props, 0,
SPA_PROP_volume, SPA_POD_Float(volume_accum));
SPA_PROP_volume,
SPA_POD_Float(get_volume_at_scale(this, volume_accum)));
volume_accum -= volume_step;
volume_offs += ramp_step_samples;
} while (volume_accum > p->volume);
@ -974,15 +987,16 @@ static int apply_props(struct impl *this, const struct spa_pod *param)
int changed = 0;
uint32_t n;
int32_t value;
uint32_t id;
SPA_POD_OBJECT_FOREACH(obj, prop) {
switch (prop->key) {
case SPA_PROP_volume:
p->prev_volume = p->volume;
spa_log_debug(this->log, "previous volume %f", p->prev_volume);
spa_log_debug(this->log, "%p previous volume %f", this, p->prev_volume);
if (spa_pod_get_float(&prop->value, &p->volume) == 0) {
spa_log_debug(this->log, "current volume %f", p->volume);
spa_log_debug(this->log, "%p current volume %f", this, p->volume);
if (p->volume_ramp_enabled && !this->vol_ramp_sequence) {
this->vol_ramp_sequence = (struct spa_pod_sequence *) generate_vol_ramp_sequence (this, p);
if (!this->vol_ramp_sequence) {
@ -1004,55 +1018,71 @@ static int apply_props(struct impl *this, const struct spa_pod *param)
case SPA_PROP_volumeRampSamples:
if (p->volume_ramp_enabled && this->vol_ramp_sequence) {
spa_log_error(this->log,"volume ramp sequence is being applied try again");
spa_log_error(this->log, "%p volume ramp sequence is being "
"applied try again", this);
return EAGAIN;
}
if (spa_pod_get_int(&prop->value, &value) == 0 && value != INVALID) {
if (spa_pod_get_int(&prop->value, &value) == 0 && value) {
p->volume_ramp_samples = value;
p->volume_ramp_time = INVALID;
spa_log_info(this->log, "volume ramp samples %d", p->volume_ramp_samples);
spa_log_info(this->log, "%p volume ramp samples %d", this,
p->volume_ramp_samples);
p->volume_ramp_enabled = true;
}
break;
case SPA_PROP_volumeRampStepSamples:
if (p->volume_ramp_enabled && this->vol_ramp_sequence) {
spa_log_error(this->log, "volume ramp sequence is being applied try again");
spa_log_error(this->log, "%p volume ramp sequence is being "
"applied try again", this);
return EAGAIN;
}
if (spa_pod_get_int(&prop->value, &value) == 0 && value != INVALID) {
if (spa_pod_get_int(&prop->value, &value) == 0 && value) {
p->volume_ramp_step_samples = value;
p->volume_ramp_step_time = INVALID;
spa_log_info(this->log, "volume ramp step samples is %d",
p->volume_ramp_step_samples);
spa_log_info(this->log, "%p volume ramp step samples is %d",
this, p->volume_ramp_step_samples);
p->volume_ramp_enabled = true;
}
break;
case SPA_PROP_volumeRampTime:
if (p->volume_ramp_enabled && this->vol_ramp_sequence) {
spa_log_error(this->log, "volume ramp sequence is being applied try again");
spa_log_error(this->log, "%p volume ramp sequence is being "
"applied try again", this);
return EAGAIN;
}
if (spa_pod_get_int(&prop->value, &value) == 0 && value != INVALID) {
if (spa_pod_get_int(&prop->value, &value) == 0 && value) {
p->volume_ramp_time = value;
p->volume_ramp_samples = INVALID;
spa_log_info(this->log, "volume ramp time %d", p->volume_ramp_time);
spa_log_info(this->log, "%p volume ramp time %d", this,
p->volume_ramp_time);
p->volume_ramp_enabled = true;
}
break;
case SPA_PROP_volumeRampStepTime:
if (p->volume_ramp_enabled && this->vol_ramp_sequence) {
spa_log_error(this->log, "volume ramp sequence is being applied try again");
spa_log_error(this->log, "%p volume ramp sequence is being "
"applied try again", this);
return EAGAIN;
}
if (spa_pod_get_int(&prop->value, &value) == 0 && value != INVALID) {
if (spa_pod_get_int(&prop->value, &value) == 0 && value) {
p->volume_ramp_step_time = value;
spa_log_info(this->log, "volume ramp step time %d",
p->volume_ramp_step_time);
p->volume_ramp_step_samples = INVALID;
spa_log_info(this->log, "%p volume ramp time %d", this,
p->volume_ramp_step_samples);
p->volume_ramp_enabled = true;
}
break;
case SPA_PROP_volumeRampScale:
if (p->volume_ramp_enabled && this->vol_ramp_sequence) {
spa_log_error(this->log, "%p volume ramp sequence is being "
"applied try again", this);
return EAGAIN;
}
if (spa_pod_get_id(&prop->value, &id) == 0) {
p->scale = id;
spa_log_info(this->log, "%p volume ramp scale %d", this,
p->scale);
p->volume_ramp_enabled = true;
}
break;