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gst/audiotestsrc/gstaudiotestsrc.*: update to basesrc changes, implement segmented seeking and eos handling, add a 's...
Original commit message from CVS: * gst/audiotestsrc/gstaudiotestsrc.c: (gst_audiostestsrc_wave_get_type), (gst_audio_test_src_class_init), (gst_audio_test_src_init), (gst_audio_test_src_src_fixate), (gst_audio_test_src_query), (gst_audio_test_src_create_sine), (gst_audio_test_src_create_square), (gst_audio_test_src_create_saw), (gst_audio_test_src_create_triangle), (gst_audio_test_src_create_silence), (gst_audio_test_src_create_white_noise), (gst_audio_test_src_create_pink_noise), (gst_audio_test_src_init_sine_table), (gst_audio_test_src_create_sine_table), (gst_audio_test_src_change_wave), (gst_audio_test_src_change_volume), (gst_audio_test_src_do_seek), (gst_audio_test_src_create), (gst_audio_test_src_set_property): * gst/audiotestsrc/gstaudiotestsrc.h: update to basesrc changes, implement segmented seeking and eos handling, add a 'sine-tab' waveform for performance critical playback
This commit is contained in:
Stefan Kost
parent
cd55b742dd
commit
0d85e2cc15
3 changed files with 146 additions and 60 deletions
21
ChangeLog
21
ChangeLog
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@ -1,3 +1,24 @@
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2005-12-29 Stefan Kost <ensonic@users.sf.net>
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* gst/audiotestsrc/gstaudiotestsrc.c:
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(gst_audiostestsrc_wave_get_type), (gst_audio_test_src_class_init),
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(gst_audio_test_src_init), (gst_audio_test_src_src_fixate),
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(gst_audio_test_src_query), (gst_audio_test_src_create_sine),
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(gst_audio_test_src_create_square),
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(gst_audio_test_src_create_saw),
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(gst_audio_test_src_create_triangle),
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(gst_audio_test_src_create_silence),
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(gst_audio_test_src_create_white_noise),
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(gst_audio_test_src_create_pink_noise),
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(gst_audio_test_src_init_sine_table),
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(gst_audio_test_src_create_sine_table),
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(gst_audio_test_src_change_wave),
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(gst_audio_test_src_change_volume), (gst_audio_test_src_do_seek),
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(gst_audio_test_src_create), (gst_audio_test_src_set_property):
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* gst/audiotestsrc/gstaudiotestsrc.h:
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update to basesrc changes, implement segmented seeking and eos handling,
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add a 'sine-tab' waveform for performance critical playback
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2005-12-29 Tim-Philipp Müller <tim at centricular dot net>
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* po/POTFILES.in:
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@ -53,6 +53,7 @@
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#include "gstaudiotestsrc.h"
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#define M_PI_M2 ( M_PI + M_PI )
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GstElementDetails gst_audio_test_src_details = {
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"Audio test source",
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@ -102,6 +103,7 @@ gst_audiostestsrc_wave_get_type (void)
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{GST_AUDIO_TEST_SRC_WAVE_SILENCE, "Silence", "silence"},
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{GST_AUDIO_TEST_SRC_WAVE_WHITE_NOISE, "White noise", "white-noise"},
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{GST_AUDIO_TEST_SRC_WAVE_PINK_NOISE, "Pink noise", "pink-noise"},
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{GST_AUDIO_TEST_SRC_WAVE_SINE_TAB, "Sine table", "sine table"},
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{0, NULL, NULL},
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};
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@ -124,7 +126,7 @@ static void gst_audio_test_src_src_fixate (GstPad * pad, GstCaps * caps);
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static gboolean gst_audio_test_src_is_seekable (GstBaseSrc * basesrc);
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static gboolean gst_audio_test_src_do_seek (GstBaseSrc * basesrc,
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GstSegment * segment);
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static gboolean gst_audio_test_src_src_query (GstBaseSrc * basesrc,
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static gboolean gst_audio_test_src_query (GstBaseSrc * basesrc,
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GstQuery * query);
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static void gst_audio_test_src_change_wave (GstAudioTestSrc * src);
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@ -183,7 +185,7 @@ gst_audio_test_src_class_init (GstAudioTestSrcClass * klass)
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gstbasesrc_class->is_seekable =
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GST_DEBUG_FUNCPTR (gst_audio_test_src_is_seekable);
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gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_audio_test_src_do_seek);
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gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_audio_test_src_src_query);
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gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_audio_test_src_query);
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gstbasesrc_class->get_times =
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GST_DEBUG_FUNCPTR (gst_audio_test_src_get_times);
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gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_audio_test_src_create);
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@ -204,6 +206,7 @@ gst_audio_test_src_init (GstAudioTestSrc * src, GstAudioTestSrcClass * g_class)
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gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
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src->samples_per_buffer = 1024;
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src->generate_samples_per_buffer = src->samples_per_buffer;
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src->timestamp_offset = G_GINT64_CONSTANT (0);
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src->wave = GST_AUDIO_TEST_SRC_WAVE_SINE;
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@ -213,11 +216,12 @@ gst_audio_test_src_init (GstAudioTestSrc * src, GstAudioTestSrcClass * g_class)
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static void
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gst_audio_test_src_src_fixate (GstPad * pad, GstCaps * caps)
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{
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GstAudioTestSrc *src = GST_AUDIO_TEST_SRC (GST_PAD_PARENT (pad));
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GstStructure *structure;
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_fixate_field_nearest_int (structure, "rate", 44100);
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gst_structure_fixate_field_nearest_int (structure, "rate", src->samplerate);
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}
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static gboolean
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@ -234,7 +238,7 @@ gst_audio_test_src_setcaps (GstBaseSrc * basesrc, GstCaps * caps)
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}
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static gboolean
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gst_audio_test_src_src_query (GstBaseSrc * basesrc, GstQuery * query)
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gst_audio_test_src_query (GstBaseSrc * basesrc, GstQuery * query)
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{
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GstAudioTestSrc *src = GST_AUDIO_TEST_SRC (basesrc);
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gboolean res = FALSE;
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@ -299,13 +303,13 @@ gst_audio_test_src_create_sine (GstAudioTestSrc * src, gint16 * samples)
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gint i;
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gdouble step, amp;
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step = 2 * M_PI * src->freq / src->samplerate;
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step = M_PI_M2 * src->freq / src->samplerate;
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amp = src->volume * 32767.0;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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src->accumulator += step;
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if (src->accumulator >= 2 * M_PI)
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src->accumulator -= 2 * M_PI;
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if (src->accumulator >= M_PI_M2)
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src->accumulator -= M_PI_M2;
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samples[i] = (gint16) (sin (src->accumulator) * amp);
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}
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@ -317,13 +321,13 @@ gst_audio_test_src_create_square (GstAudioTestSrc * src, gint16 * samples)
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gint i;
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gdouble step, amp;
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step = 2 * M_PI * src->freq / src->samplerate;
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step = M_PI_M2 * src->freq / src->samplerate;
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amp = src->volume * 32767.0;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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src->accumulator += step;
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if (src->accumulator >= 2 * M_PI)
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src->accumulator -= 2 * M_PI;
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if (src->accumulator >= M_PI_M2)
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src->accumulator -= M_PI_M2;
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samples[i] = (gint16) ((src->accumulator < M_PI) ? amp : -amp);
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}
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@ -335,18 +339,18 @@ gst_audio_test_src_create_saw (GstAudioTestSrc * src, gint16 * samples)
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gint i;
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gdouble step, amp;
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step = 2 * M_PI * src->freq / src->samplerate;
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step = M_PI_M2 * src->freq / src->samplerate;
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amp = (src->volume * 32767.0) / M_PI;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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src->accumulator += step;
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if (src->accumulator >= 2 * M_PI)
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src->accumulator -= 2 * M_PI;
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if (src->accumulator >= M_PI_M2)
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src->accumulator -= M_PI_M2;
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if (src->accumulator < M_PI) {
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samples[i] = (gint16) (src->accumulator * amp);
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} else {
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samples[i] = (gint16) ((2 * M_PI - src->accumulator) * -amp);
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samples[i] = (gint16) ((M_PI_M2 - src->accumulator) * -amp);
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}
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}
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}
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@ -357,20 +361,20 @@ gst_audio_test_src_create_triangle (GstAudioTestSrc * src, gint16 * samples)
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gint i;
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gdouble step, amp;
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step = 2 * M_PI * src->freq / src->samplerate;
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amp = (src->volume * 32767.0) / (M_PI * 0.5);
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step = M_PI_M2 * src->freq / src->samplerate;
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amp = (src->volume * 32767.0) / M_PI_2;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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src->accumulator += step;
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if (src->accumulator >= 2 * M_PI)
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src->accumulator -= 2 * M_PI;
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if (src->accumulator >= M_PI_M2)
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src->accumulator -= M_PI_M2;
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if (src->accumulator < (M_PI * 0.5)) {
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samples[i] = (gint16) (src->accumulator * amp);
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} else if (src->accumulator < (M_PI * 1.5)) {
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samples[i] = (gint16) ((src->accumulator - M_PI) * -amp);
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} else {
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samples[i] = (gint16) ((2 * M_PI - src->accumulator) * -amp);
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samples[i] = (gint16) ((M_PI_M2 - src->accumulator) * -amp);
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}
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}
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}
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@ -378,7 +382,7 @@ gst_audio_test_src_create_triangle (GstAudioTestSrc * src, gint16 * samples)
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static void
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gst_audio_test_src_create_silence (GstAudioTestSrc * src, gint16 * samples)
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{
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memset (samples, 0, src->samples_per_buffer * sizeof (gint16));
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memset (samples, 0, src->generate_samples_per_buffer * sizeof (gint16));
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}
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static void
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@ -389,7 +393,7 @@ gst_audio_test_src_create_white_noise (GstAudioTestSrc * src, gint16 * samples)
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amp = src->volume * 65535.0;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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samples[i] = (gint16) (32768 - (amp * rand () / (RAND_MAX + 1.0)));
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}
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}
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@ -467,13 +471,49 @@ gst_audio_test_src_create_pink_noise (GstAudioTestSrc * src, gint16 * samples)
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amp = src->volume * 32767.0;
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for (i = 0; i < src->samples_per_buffer; i++) {
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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samples[i] =
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(gint16) (gst_audio_test_src_generate_pink_noise_value (&src->pink) *
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amp);
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}
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}
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static void
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gst_audio_test_src_init_sine_table (GstAudioTestSrc * src)
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{
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gint i;
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gdouble ang = 0.0;
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gdouble step = M_PI_M2 / 1024.0;
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gdouble amp = src->volume * 32767.0;
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for (i = 0; i < 1024; i++) {
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src->wave_table[i] = (gint16) (sin (ang) * amp);
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ang += step;
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}
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}
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static void
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gst_audio_test_src_create_sine_table (GstAudioTestSrc * src, gint16 * samples)
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{
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gint i;
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gdouble step, scl;
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step = M_PI_M2 * src->freq / src->samplerate;
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scl = 1024.0 / M_PI_M2;
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for (i = 0; i < src->generate_samples_per_buffer; i++) {
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src->accumulator += step;
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if (src->accumulator >= M_PI_M2)
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src->accumulator -= M_PI_M2;
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samples[i] = (gint16) src->wave_table[(gint) (src->accumulator * scl)];
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}
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}
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/*
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* gst_audio_test_src_change_wave:
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* Assign function pointer of wave genrator.
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*/
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static void
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gst_audio_test_src_change_wave (GstAudioTestSrc * src)
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{
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@ -500,12 +540,32 @@ gst_audio_test_src_change_wave (GstAudioTestSrc * src)
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gst_audio_test_src_init_pink_noise (src);
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src->process = gst_audio_test_src_create_pink_noise;
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break;
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case GST_AUDIO_TEST_SRC_WAVE_SINE_TAB:
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gst_audio_test_src_init_sine_table (src);
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src->process = gst_audio_test_src_create_sine_table;
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break;
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default:
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GST_ERROR ("invalid wave-form");
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break;
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}
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}
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/*
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* gst_audio_test_src_change_volume:
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* Recalc wave tables for precalculated waves.
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*/
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static void
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gst_audio_test_src_change_volume (GstAudioTestSrc * src)
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{
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switch (src->wave) {
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case GST_AUDIO_TEST_SRC_WAVE_SINE_TAB:
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gst_audio_test_src_init_sine_table (src);
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break;
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default:
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break;
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}
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}
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static void
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gst_audio_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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@ -543,17 +603,14 @@ gst_audio_test_src_do_seek (GstBaseSrc * basesrc, GstSegment * segment)
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g_assert (src->running_time <= time);
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/*
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if (GST_CLOCK_TIME_IS_VALID (segment->stop)) {
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time = segment->stop;
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src->n_samples_stop = time * src->samplerate / GST_SECOND;
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src->check_seek_stop = true;
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src->seek_flags = segment.flags;
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}
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else {
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src->check_seek_stop = false;
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}
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*/
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if (GST_CLOCK_TIME_IS_VALID (segment->stop)) {
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time = segment->stop;
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src->n_samples_stop = time * src->samplerate / GST_SECOND;
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src->check_seek_stop = TRUE;
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} else {
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src->check_seek_stop = FALSE;
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}
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src->eos_reached = FALSE;
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return TRUE;
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}
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@ -572,9 +629,13 @@ gst_audio_test_src_create (GstBaseSrc * basesrc, guint64 offset,
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GstAudioTestSrc *src;
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GstBuffer *buf;
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GstClockTime next_time;
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gint64 n_samples;
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src = GST_AUDIO_TEST_SRC (basesrc);
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if (src->eos_reached)
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return GST_FLOW_UNEXPECTED;
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if (!src->tags_pushed) {
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GstTagList *taglist;
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GstEvent *event;
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@ -589,30 +650,35 @@ gst_audio_test_src_create (GstBaseSrc * basesrc, guint64 offset,
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src->tags_pushed = TRUE;
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}
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buf = gst_buffer_new_and_alloc (src->samples_per_buffer * sizeof (gint16));
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if (src->check_seek_stop &&
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(src->n_samples_stop > src->n_samples) &&
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(src->n_samples_stop < src->n_samples + src->samples_per_buffer)
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) {
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/* calculate only partial buffer */
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src->generate_samples_per_buffer = src->n_samples_stop - src->n_samples;
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n_samples = src->n_samples_stop;
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src->eos_reached = TRUE;
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} else {
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/* calculate full buffer */
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src->generate_samples_per_buffer = src->samples_per_buffer;
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n_samples = src->n_samples + src->samples_per_buffer;
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}
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next_time = n_samples * GST_SECOND / src->samplerate;
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buf =
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gst_buffer_new_and_alloc (src->generate_samples_per_buffer *
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sizeof (gint16));
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gst_buffer_set_caps (buf, GST_PAD_CAPS (basesrc->srcpad));
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GST_BUFFER_TIMESTAMP (buf) = src->timestamp_offset + src->running_time;
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/* offset is the number of samples */
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GST_BUFFER_OFFSET (buf) = src->n_samples;
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/*
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if (src->check_seek_stop &&
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(src->n_samples_stop > src->n_samples) &&
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(src->n_samples_stop < src->n_samples + src->samples_per_buffer)) {
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src->n_samples = src->n_samples_stop;
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@todo: calculate only partial buffer!
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@todo: send EOS or SEGMENT_DONE depending on segment.flags&GST_SEEK_FLAG_SEGMENT
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}
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else
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*/
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src->n_samples += src->samples_per_buffer;
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GST_BUFFER_OFFSET_END (buf) = src->n_samples;
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next_time = src->n_samples * GST_SECOND / src->samplerate;
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GST_BUFFER_OFFSET_END (buf) = n_samples;
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GST_BUFFER_DURATION (buf) = next_time - src->running_time;
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gst_object_sync_values (G_OBJECT (src), src->running_time);
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src->running_time = next_time;
|
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src->n_samples = n_samples;
|
||||
|
||||
src->process (src, (gint16 *) GST_BUFFER_DATA (buf));
|
||||
|
||||
|
|
@ -640,6 +706,7 @@ gst_audio_test_src_set_property (GObject * object, guint prop_id,
|
|||
break;
|
||||
case PROP_VOLUME:
|
||||
src->volume = g_value_get_double (value);
|
||||
gst_audio_test_src_change_volume (src);
|
||||
break;
|
||||
case PROP_IS_LIVE:
|
||||
gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
|
||||
|
|
|
|||
|
|
@ -50,6 +50,7 @@ typedef enum {
|
|||
GST_AUDIO_TEST_SRC_WAVE_SILENCE,
|
||||
GST_AUDIO_TEST_SRC_WAVE_WHITE_NOISE,
|
||||
GST_AUDIO_TEST_SRC_WAVE_PINK_NOISE,
|
||||
GST_AUDIO_TEST_SRC_WAVE_SINE_TAB
|
||||
} GstAudioTestSrcWaves;
|
||||
|
||||
#define PINK_MAX_RANDOM_ROWS (30)
|
||||
|
|
@ -81,23 +82,20 @@ struct _GstAudioTestSrc {
|
|||
gint samplerate;
|
||||
gint samples_per_buffer;
|
||||
|
||||
gdouble accumulator;
|
||||
|
||||
gboolean tags_pushed;
|
||||
|
||||
/* < private > */
|
||||
GstClockID clock_id;
|
||||
gboolean tags_pushed; /* send tags just once ? */
|
||||
GstClockTimeDiff timestamp_offset; /* base offset */
|
||||
GstClockTime running_time; /* total running time */
|
||||
gint64 n_samples; /* total samples sent */
|
||||
/*
|
||||
gint64 n_samples_stop;
|
||||
gboolean check_seek_stop;
|
||||
GstSeekFlags seek_flags;
|
||||
*/
|
||||
gboolean eos_reached;
|
||||
gint generate_samples_per_buffer; /* used to generate a partial buffer */
|
||||
|
||||
/* waveform specific context data */
|
||||
gdouble accumulator; /* phase angle */
|
||||
GstPinkNoise pink;
|
||||
gint16 wave_table[1024];
|
||||
};
|
||||
|
||||
struct _GstAudioTestSrcClass {
|
||||
|
|
|
|||
Loading…
Reference in a new issue