Skip to content

Commit

Permalink
Cleanup: Stripped out a bunch of unneeded stuff.
Browse files Browse the repository at this point in the history 
Got some good feedback from mlt crew.
Otherwise just cleaned up some messy old plugin code.
  • Loading branch information
@emmetoneillpdx
emmetoneillpdx committed Dec 6, 2023
1 parent bc24505 commit 4bbdcfa
Showing 1 changed file with 30 additions and 72 deletions.
102 changes: 30 additions & 72 deletions src/modules/krita/producer_krita.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -34,28 +34,23 @@

typedef struct
{
int frame_start;
int frame_end;
int limit_enabled;
double speed;
mlt_producer producer_internal;
} private_data;

static int restrict_range(int input, int min, int max)
/** Restricts frame index to within range by modulus wrapping (not clamping).
*/
static int restrict_range(int index, int min, int max)
{
const int span = max - min;
return (MAX(input - min, 0) % (span + 1)) + min;
return (MAX(index - min, 0) % (span + 1)) + min;
}

int is_valid_range(const private_data *pdata)
static int is_valid_range(const int frame_start, const int frame_end)
{
return pdata->frame_start > -1 && pdata->frame_end > -1
&& pdata->frame_end > pdata->frame_start;
}
const bool NON_NEGATIVE = frame_start >= 0 && frame_end >= 0;
const bool NON_INVERTED = frame_end > frame_start;

int is_limit_enabled(const private_data *pdata)
{
return pdata->limit_enabled != 0;
return NON_NEGATIVE && NON_INVERTED;
}

static int producer_get_audio(mlt_frame frame,
Expand All @@ -66,8 +61,9 @@ static int producer_get_audio(mlt_frame frame,
int *samples)
{
mlt_producer producer = mlt_frame_pop_audio(frame);
private_data *pdata = (private_data *) producer->child;

struct mlt_audio_s audio;

mlt_audio_set_values(&audio, *buffer, *frequency, *format, *samples, *channels);

int error = mlt_frame_get_audio(frame,
Expand All @@ -77,10 +73,13 @@ static int producer_get_audio(mlt_frame frame,
&audio.channels,
&audio.samples);

// Scale the frequency to account for the speed change.
audio.frequency = (double) audio.frequency * fabs(pdata->speed);
mlt_properties props = MLT_PRODUCER_PROPERTIES(producer);

if (pdata->speed < 0.0) {
// Scale the frequency to account for the dynamic speed (normalized).
const double SPEED = mlt_properties_get_double(props, "speed");

audio.frequency = (double) audio.frequency * fabs(SPEED);
if (SPEED < 0.0) {
mlt_audio_reverse(&audio);
}

Expand All @@ -91,62 +90,37 @@ static int producer_get_audio(mlt_frame frame,

static int producer_get_frame(mlt_producer producer, mlt_frame_ptr frame, int index)
{
mlt_properties props = MLT_PRODUCER_PROPERTIES(producer);
const int FRAME_START = mlt_properties_get_int(props, "start_frame");
const int FRAME_END = mlt_properties_get_int(props, "end_frame");
const bool IS_RANGE_LIMITED = mlt_properties_get_int(props, "limit_enabled");

private_data *pdata = (private_data *) producer->child;
const int POSITION = mlt_producer_position(pdata->producer_internal);

const int position = mlt_producer_position(pdata->producer_internal);
if (is_valid_range(pdata) && is_limit_enabled(pdata)) {
if (IS_RANGE_LIMITED && is_valid_range(FRAME_START, FRAME_END)) {
mlt_properties_set_position(MLT_PRODUCER_PROPERTIES(pdata->producer_internal),
"_position",
restrict_range(position, pdata->frame_start, pdata->frame_end));
restrict_range(POSITION, FRAME_START, FRAME_END));
}

int r = mlt_service_get_frame((mlt_service) pdata->producer_internal, frame, index);
int retval = mlt_service_get_frame((mlt_service) pdata->producer_internal, frame, index);

if (!mlt_frame_is_test_audio(*frame)) {
mlt_frame_push_audio(*frame, producer);
mlt_frame_push_audio(*frame, producer_get_audio);
}

return r;
return retval;
}

static int producer_seek(mlt_producer producer, mlt_position position)
{
private_data *pdata = (private_data *) producer->child;

int r = mlt_producer_seek(pdata->producer_internal, position);
int retval = mlt_producer_seek(pdata->producer_internal, position);

return r;
}

static void producer_property_changed(mlt_service owner,
mlt_producer self,
mlt_event_data event_data)
{
const char *name = mlt_event_data_to_string(event_data);
if (!name)
return;

private_data *pdata = (private_data *) self->child;
mlt_properties props = MLT_PRODUCER_PROPERTIES(self);

if (!strcmp(name, "start_frame") || !strcmp(name, "end_frame")) {
pdata->frame_start = mlt_properties_get_int(props, "start_frame");
pdata->frame_end = mlt_properties_get_int(props, "end_frame");
}

if (!strcmp(name, "limit_enabled")) {
pdata->limit_enabled = mlt_properties_get_int(props, "limit_enabled");
}

if (!strcmp(name, "speed")) {
pdata->speed = mlt_properties_get_double(props, "speed");
}

if (!strcmp(name, "_profile")) {
mlt_service_set_profile((mlt_service) pdata->producer_internal,
mlt_service_profile((mlt_service) self));
}
return retval;
}

static void producer_close(mlt_producer producer)
Expand Down Expand Up @@ -187,32 +161,16 @@ mlt_producer producer_krita_init(mlt_profile profile,
// Get the resource to be passed to the clip producer
char *resource = arg;

// Default frame start / end props.
pdata->frame_start = -1;
pdata->frame_end = -1;
pdata->limit_enabled = 1;
pdata->speed = 1.0;

// Initialize property values for start / end frames.
mlt_properties_set_int(producer_properties, "start_frame", pdata->frame_start);
mlt_properties_set_int(producer_properties, "end_frame", pdata->frame_end);
mlt_properties_set_int(producer_properties, "limit_enabled", pdata->limit_enabled);
mlt_properties_set_double(producer_properties, "speed", pdata->speed);

// Create a producer for the clip using the false profile.
pdata->producer_internal = mlt_factory_producer(profile, "abnormal", resource);

if (pdata->producer_internal) {
mlt_producer_set_speed(pdata->producer_internal, 1.0);
}

mlt_events_listen(producer_properties,
producer,
"property-changed",
(mlt_listener) producer_property_changed);
}

if (!producer || !pdata || !pdata->producer_internal) {
const bool INVALID_CONTEXT = !producer || !pdata || !pdata->producer_internal;
if (INVALID_CONTEXT) { // Clean up early...
if (pdata) {
mlt_producer_close(pdata->producer_internal);
free(pdata);
Expand Down

0 comments on commit 4bbdcfa

Please sign in to comment.