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gstmoodbar: Formatting

This commit is contained in:
Jonas Kvinge 2021-10-30 00:48:21 +02:00
parent e75c955a68
commit 377e6fad25
4 changed files with 167 additions and 192 deletions
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105
ext/gstmoodbar/gstfastspectrum.cpp
View File

@ -36,7 +36,7 @@
GST_DEBUG_CATEGORY_STATIC(gst_fastspectrum_debug);
#define GST_CAT_DEFAULT gst_fastspectrum_debug
/* elementfactory information */
// elementfactory information
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
# define FORMATS "{ S16LE, S24LE, S32LE, F32LE, F64LE }"
#else
@ -44,11 +44,12 @@ GST_DEBUG_CATEGORY_STATIC (gst_fastspectrum_debug);
#endif
#define ALLOWED_CAPS \
GST_AUDIO_CAPS_MAKE (FORMATS) ", " \
GST_AUDIO_CAPS_MAKE(FORMATS) \
", " \
"layout = (string) interleaved, " \
"channels = 1"
/* Spectrum properties */
// Spectrum properties
#define DEFAULT_INTERVAL (GST_SECOND / 10)
#define DEFAULT_BANDS 128
@ -88,13 +89,11 @@ static void gst_fastspectrum_class_init (GstFastSpectrumClass * klass) {
filter_class->setup = GST_DEBUG_FUNCPTR(gst_fastspectrum_setup);
g_object_class_install_property (gobject_class, PROP_INTERVAL,
g_param_spec_uint64 ("interval", "Interval", "Interval of time between message posts (in nanoseconds)", 1, G_MAXUINT64, DEFAULT_INTERVAL, GParamFlags(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(gobject_class, PROP_INTERVAL, g_param_spec_uint64("interval", "Interval", "Interval of time between message posts (in nanoseconds)", 1, G_MAXUINT64, DEFAULT_INTERVAL, GParamFlags(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property(gobject_class, PROP_BANDS, g_param_spec_uint("bands", "Bands", "Number of frequency bands", 0, G_MAXUINT, DEFAULT_BANDS, GParamFlags(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
GST_DEBUG_CATEGORY_INIT (gst_fastspectrum_debug, "spectrum", 0,
"audio spectrum analyser element");
GST_DEBUG_CATEGORY_INIT(gst_fastspectrum_debug, "spectrum", 0, "audio spectrum analyser element");
gst_element_class_set_static_metadata(element_class, "Spectrum analyzer",
"Filter/Analyzer/Audio",
@ -108,7 +107,6 @@ static void gst_fastspectrum_class_init (GstFastSpectrumClass * klass) {
gst_caps_unref(caps);
klass->fftw_lock = new QMutex;
}
static void gst_fastspectrum_init(GstFastSpectrum *spectrum) {
@ -136,7 +134,7 @@ static void gst_fastspectrum_alloc_channel_data (GstFastSpectrum * spectrum) {
GstFastSpectrumClass *klass = reinterpret_cast<GstFastSpectrumClass*>(G_OBJECT_GET_CLASS(spectrum));
{
QMutexLocker l(klass->fftw_lock);
spectrum->plan = fftw_plan_dft_r2c_1d(nfft, spectrum->fft_input, spectrum->fft_output, FFTW_ESTIMATE);
spectrum->plan = fftw_plan_dft_r2c_1d(static_cast<int>(nfft), spectrum->fft_input, spectrum->fft_output, FFTW_ESTIMATE);
}
spectrum->channel_data_initialized = true;
@ -259,16 +257,16 @@ static gboolean gst_fastspectrum_stop (GstBaseTransform * trans) {
}
/* mixing data readers */
// Mixing data readers
static void input_data_mixed_float(const guint8 *_in, double *out, guint len, double max_value, guint op, guint nfft) {
Q_UNUSED(max_value);
guint j = 0, ip = 0;
const gfloat *in = reinterpret_cast<const gfloat*>(_in);
guint ip = 0;
for (j = 0; j < len; j++) {
for (guint j = 0; j < len; j++) {
out[op] = in[ip++];
op = (op + 1) % nfft;
}
@ -279,10 +277,10 @@ static void input_data_mixed_double (const guint8 * _in, double* out, guint len,
Q_UNUSED(max_value);
guint j = 0, ip = 0;
const gdouble *in = reinterpret_cast<const gdouble*>(_in);
guint ip = 0;
for (j = 0; j < len; j++) {
for (guint j = 0; j < len; j++) {
out[op] = in[ip++];
op = (op + 1) % nfft;
}
@ -291,10 +289,10 @@ static void input_data_mixed_double (const guint8 * _in, double* out, guint len,
static void input_data_mixed_int32_max(const guint8 *_in, double *out, guint len, double max_value, guint op, guint nfft) {
guint j = 0, ip = 0;
const gint32 *in = reinterpret_cast<const gint32*>(_in);
guint ip = 0;
for (j = 0; j < len; j++) {
for (guint j = 0; j < len; j++) {
out[op] = in[ip++] / max_value;
op = (op + 1) % nfft;
}
@ -303,13 +301,11 @@ static void input_data_mixed_int32_max (const guint8 * _in, double* out, guint l
static void input_data_mixed_int24_max(const guint8 *_in, double *out, guint len, double max_value, guint op, guint nfft) {
guint j = 0;
for (j = 0; j < len; j++) {
for (guint j = 0; j < len; j++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 value = GST_READ_UINT24_BE (_in);
guint32 value = GST_READ_UINT24_BE(_in);
#else
gint32 value = GST_READ_UINT24_LE (_in);
guint32 value = GST_READ_UINT24_LE(_in);
#endif
if (value & 0x00800000) {
value |= 0xff000000;
@ -324,10 +320,10 @@ static void input_data_mixed_int24_max (const guint8 * _in, double* out, guint l
static void input_data_mixed_int16_max(const guint8 *_in, double *out, guint len, double max_value, guint op, guint nfft) {
guint j = 0, ip = 0;
const gint16 *in = reinterpret_cast<const gint16*>(_in);
guint ip = 0;
for (j = 0; j < len; j++) {
for (guint j = 0; j < len; j++) {
out[op] = in[ip++] / max_value;
op = (op + 1) % nfft;
}
@ -371,21 +367,19 @@ static gboolean gst_fastspectrum_setup (GstAudioFilter * base, const GstAudioInf
static void gst_fastspectrum_run_fft(GstFastSpectrum *spectrum, guint input_pos) {
guint i = 0;
guint bands = spectrum->bands;
guint nfft = 2 * bands - 2;
for (i = 0; i < nfft; i++) {
for (guint i = 0; i < nfft; i++) {
spectrum->fft_input[i] = spectrum->input_ring_buffer[(input_pos + i) % nfft];
}
// Should be safe to execute the same plan multiple times in parallel.
fftw_execute(spectrum->plan);
gdouble val = 0.0;
/* Calculate magnitude in db */
for (i = 0; i < bands; i++) {
val = spectrum->fft_output[i][0] * spectrum->fft_output[i][0];
// Calculate magnitude in db
for (guint i = 0; i < bands; i++) {
gdouble val = spectrum->fft_output[i][0] * spectrum->fft_output[i][0];
val += spectrum->fft_output[i][1] * spectrum->fft_output[i][1];
val /= nfft * nfft;
spectrum->spect_magnitude[i] += val;
@ -399,15 +393,13 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
guint rate = GST_AUDIO_FILTER_RATE(spectrum);
guint bps = GST_AUDIO_FILTER_BPS(spectrum);
guint bpf = GST_AUDIO_FILTER_BPF(spectrum);
double max_value = (1UL << ((bps << 3) - 1)) - 1;
double max_value = static_cast<double>((1UL << ((bps << 3) - 1)) - 1);
guint bands = spectrum->bands;
guint nfft = 2 * bands - 2;
guint input_pos = 0;
GstMapInfo map;
const guint8 *data = nullptr;
gsize size = 0;
guint fft_todo = 0, msg_todo = 0, block_size = 0;
gboolean have_full_interval = false;
GstFastSpectrumInputData input_data = nullptr;
g_mutex_lock(&spectrum->lock);
@ -422,29 +414,22 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
gst_fastspectrum_flush(spectrum);
}
/* If we don't have a FFT context yet (or it was reset due to parameter
* changes) get one and allocate memory for everything
*/
// If we don't have a FFT context yet (or it was reset due to parameter changes) get one and allocate memory for everything
if (!spectrum->channel_data_initialized) {
GST_DEBUG_OBJECT(spectrum, "allocating for bands %u", bands);
gst_fastspectrum_alloc_channel_data(spectrum);
/* number of sample frames we process before posting a message
* interval is in ns */
// Number of sample frames we process before posting a message interval is in ns
spectrum->frames_per_interval = gst_util_uint64_scale(spectrum->interval, rate, GST_SECOND);
spectrum->frames_todo = spectrum->frames_per_interval;
/* rounding error for frames_per_interval in ns,
* aggregated it in accumulated_error */
// Rounding error for frames_per_interval in ns, aggregated it in accumulated_error
spectrum->error_per_interval = (spectrum->interval * rate) % GST_SECOND;
if (spectrum->frames_per_interval == 0) {
spectrum->frames_per_interval = 1;
}
GST_INFO_OBJECT (spectrum, "interval %" GST_TIME_FORMAT ", fpi %"
G_GUINT64_FORMAT ", error %" GST_TIME_FORMAT,
GST_TIME_ARGS (spectrum->interval), spectrum->frames_per_interval,
GST_TIME_ARGS (spectrum->error_per_interval));
GST_INFO_OBJECT(spectrum, "interval %" GST_TIME_FORMAT ", fpi %" G_GUINT64_FORMAT ", error %" GST_TIME_FORMAT, GST_TIME_ARGS(spectrum->interval), spectrum->frames_per_interval, GST_TIME_ARGS(spectrum->error_per_interval));
spectrum->input_pos = 0;
@ -459,13 +444,11 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
input_data = spectrum->input_data;
while (size >= bpf) {
/* run input_data for a chunk of data */
fft_todo = nfft - (spectrum->num_frames % nfft);
msg_todo = spectrum->frames_todo - spectrum->num_frames;
GST_LOG_OBJECT (spectrum,
"message frames todo: %u, fft frames todo: %u, input frames %"
G_GSIZE_FORMAT, msg_todo, fft_todo, (size / bpf));
block_size = msg_todo;
// Run input_data for a chunk of data
guint fft_todo = nfft - (spectrum->num_frames % nfft);
guint msg_todo = spectrum->frames_todo - spectrum->num_frames;
GST_LOG_OBJECT(spectrum, "message frames todo: %u, fft frames todo: %u, input frames %" G_GSIZE_FORMAT, msg_todo, fft_todo, (size / bpf));
guint block_size = msg_todo;
if (block_size > (size / bpf)) {
block_size = (size / bpf);
}
@ -473,7 +456,7 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
block_size = fft_todo;
}
/* Move the current frames into our ringbuffers */
// Move the current frames into our ringbuffers
input_data(data, spectrum->input_ring_buffer, block_size, max_value, input_pos, nfft);
data += block_size * bpf;
@ -481,25 +464,19 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
input_pos = (input_pos + block_size) % nfft;
spectrum->num_frames += block_size;
have_full_interval = (spectrum->num_frames == spectrum->frames_todo);
gboolean have_full_interval = (spectrum->num_frames == spectrum->frames_todo);
GST_LOG_OBJECT (spectrum,
"size: %" G_GSIZE_FORMAT ", do-fft = %d, do-message = %d", size,
(spectrum->num_frames % nfft == 0), have_full_interval);
GST_LOG_OBJECT(spectrum, "size: %" G_GSIZE_FORMAT ", do-fft = %d, do-message = %d", size, (spectrum->num_frames % nfft == 0), have_full_interval);
/* If we have enough frames for an FFT or we have all frames required for
* the interval and we haven't run a FFT, then run an FFT */
// If we have enough frames for an FFT or we have all frames required for the interval and we haven't run a FFT, then run an FFT
if ((spectrum->num_frames % nfft == 0) || (have_full_interval && !spectrum->num_fft)) {
gst_fastspectrum_run_fft(spectrum, input_pos);
spectrum->num_fft++;
}
/* Do we have the FFTs for one interval? */
// Do we have the FFTs for one interval?
if (have_full_interval) {
GST_DEBUG_OBJECT (spectrum, "nfft: %u frames: %" G_GUINT64_FORMAT
" fpi: %" G_GUINT64_FORMAT " error: %" GST_TIME_FORMAT, nfft,
spectrum->num_frames, spectrum->frames_per_interval,
GST_TIME_ARGS (spectrum->accumulated_error));
GST_DEBUG_OBJECT(spectrum, "nfft: %u frames: %" G_GUINT64_FORMAT " fpi: %" G_GUINT64_FORMAT " error: %" GST_TIME_FORMAT, nfft, spectrum->num_frames, spectrum->frames_per_interval, GST_TIME_ARGS(spectrum->accumulated_error));
spectrum->frames_todo = spectrum->frames_per_interval;
if (spectrum->accumulated_error >= GST_SECOND) {
@ -511,10 +488,10 @@ static GstFlowReturn gst_fastspectrum_transform_ip (GstBaseTransform *trans, Gst
if (spectrum->output_callback) {
// Calculate average
for (guint i = 0; i < spectrum->bands; i++) {
spectrum->spect_magnitude[i] /= spectrum->num_fft;
spectrum->spect_magnitude[i] /= static_cast<double>(spectrum->num_fft);
}
spectrum->output_callback(spectrum->spect_magnitude, spectrum->bands);
spectrum->output_callback(spectrum->spect_magnitude, static_cast<int>(spectrum->bands));
// Reset spectrum accumulators
memset(spectrum->spect_magnitude, 0, spectrum->bands * sizeof(double));

19
ext/gstmoodbar/gstfastspectrum.h
View File

@ -52,19 +52,18 @@ typedef std::function<void(double* magnitudes, int size)> OutputCallback;
struct GstFastSpectrum {
GstAudioFilter parent;
/* properties */
guint64 interval; /* how many nanoseconds between emits */
guint64 frames_per_interval; /* how many frames per interval */
// Properties
guint64 interval; // How many nanoseconds between emits
guint64 frames_per_interval; // How many frames per interval
guint64 frames_todo;
guint bands; /* number of spectrum bands */
gboolean multi_channel; /* send separate channel results */
guint bands; // Number of spectrum bands
gboolean multi_channel; // Send separate channel results
guint64 num_frames; /* frame count (1 sample per channel)
* since last emit */
guint64 num_fft; /* number of FFTs since last emit */
GstClockTime message_ts; /* starttime for next message */
guint64 num_frames; // Frame count (1 sample per channel) since last emit
guint64 num_fft; // Number of FFTs since last emit
GstClockTime message_ts; // Starttime for next message
/* <private> */
// <private>
bool channel_data_initialized;
double *input_ring_buffer;
double *fft_input;

1
ext/gstmoodbar/gstmoodbarplugin.cpp
View File

@ -30,7 +30,6 @@ static gboolean gst_moodbar_plugin_init(GstPlugin *plugin) {
}
return TRUE;
}
} // namespace