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gst/synaesthesia/gstsynaesthesia.c: Fix up synaesthesia to work under different samplerates/ buffer sizes.
Original commit message from CVS: * gst/synaesthesia/gstsynaesthesia.c: (gst_synaesthesia_class_init), (gst_synaesthesia_init), (gst_synaesthesia_dispose), (gst_synaesthesia_finalize), (gst_synaesthesia_sink_link), (gst_synaesthesia_src_getcaps), (gst_synaesthesia_src_link), (gst_synaesthesia_chain), (gst_synaesthesia_change_state), (plugin_init): Fix up synaesthesia to work under different samplerates/ buffer sizes. Force 320x200 output, as that's the only thing the underlying synaesthesia implementation supports. Still needs to be made re-entrant.
This commit is contained in:
Jan Schmidt
parent
83a1ad843a
commit
f48c1f9fc3
12
ChangeLog
12
ChangeLog
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@ -1,3 +1,15 @@
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2004-11-16 Jan Schmidt <thaytan@mad.scientist.com>
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* gst/synaesthesia/gstsynaesthesia.c:
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(gst_synaesthesia_class_init), (gst_synaesthesia_init),
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(gst_synaesthesia_dispose), (gst_synaesthesia_finalize),
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(gst_synaesthesia_sink_link), (gst_synaesthesia_src_getcaps),
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(gst_synaesthesia_src_link), (gst_synaesthesia_chain),
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(gst_synaesthesia_change_state), (plugin_init):
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Fix up synaesthesia to work under different samplerates/ buffer sizes.
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Force 320x200 output, as that's the only thing the underlying
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synaesthesia implementation supports. Still needs to be made
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re-entrant.
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2004-11-14 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* configure.ac:
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@ -21,11 +21,17 @@
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/audio/audio.h>
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#include <gst/bytestream/adapter.h>
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#include "synaescope.h"
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#define SYNAES_SAMPLES 512
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#define SYNAES_WIDTH 320
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#define SYNAES_HEIGHT 200
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#define GST_TYPE_SYNAESTHESIA (gst_synaesthesia_get_type())
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#define GST_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SYNAESTHESIA,GstSynaesthesia))
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#define GST_SYNAESTHESIA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SYNAESTHESIA,GstSynaesthesia))
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@ -41,16 +47,21 @@ struct _GstSynaesthesia
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/* pads */
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GstPad *sinkpad, *srcpad;
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GstAdapter *adapter;
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/* the timestamp of the next frame */
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guint64 next_time;
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gint16 datain[2][512];
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guint64 audio_basetime;
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guint64 samples_consumed;
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gint16 datain[2][SYNAES_SAMPLES];
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/* video state */
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gfloat fps;
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gdouble fps;
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gint width;
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gint height;
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gboolean first_buffer;
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gint channels;
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/* Audio state */
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gint sample_rate;
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};
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struct _GstSynaesthesiaClass
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@ -75,15 +86,6 @@ enum
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_WIDTH,
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ARG_HEIGHT,
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ARG_FPS
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/* FILL ME */
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};
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static GstStaticPadTemplate gst_synaesthesia_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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@ -102,17 +104,17 @@ GST_STATIC_PAD_TEMPLATE ("sink",
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static void gst_synaesthesia_base_init (gpointer g_class);
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static void gst_synaesthesia_class_init (GstSynaesthesiaClass * klass);
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static void gst_synaesthesia_init (GstSynaesthesia * synaesthesia);
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static void gst_synaesthesia_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_synaesthesia_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_synaesthesia_finalize (GObject * object);
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static void gst_synaesthesia_dispose (GObject * object);
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static void gst_synaesthesia_chain (GstPad * pad, GstData * _data);
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static GstElementStateReturn
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gst_synaesthesia_change_state (GstElement * element);
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static GstCaps *gst_synaesthesia_src_getcaps (GstPad * pad);
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static GstPadLinkReturn
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gst_synaesthesia_src_link (GstPad * pad, const GstCaps * caps);
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static GstPadLinkReturn
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gst_synaesthesia_sink_link (GstPad * pad, const GstCaps * caps);
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@ -166,20 +168,10 @@ gst_synaesthesia_class_init (GstSynaesthesiaClass * klass)
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_WIDTH,
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g_param_spec_int ("width", "Width", "The Width",
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1, 2048, 320, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HEIGHT,
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g_param_spec_int ("height", "Height", "The height",
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1, 2048, 320, G_PARAM_READWRITE));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FPS,
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g_param_spec_float ("fps", "FPS", "Frames per second",
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0., G_MAXFLOAT, 25., G_PARAM_READWRITE));
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gobject_class->set_property = gst_synaesthesia_set_property;
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gobject_class->get_property = gst_synaesthesia_get_property;
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gstelement_class->change_state = gst_synaesthesia_change_state;
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gobject_class->dispose = gst_synaesthesia_dispose;
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gobject_class->finalize = gst_synaesthesia_finalize;
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}
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static void
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@ -198,21 +190,123 @@ gst_synaesthesia_init (GstSynaesthesia * synaesthesia)
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gst_pad_set_chain_function (synaesthesia->sinkpad, gst_synaesthesia_chain);
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gst_pad_set_link_function (synaesthesia->sinkpad, gst_synaesthesia_sink_link);
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gst_pad_set_getcaps_function (synaesthesia->srcpad,
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gst_synaesthesia_src_getcaps);
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gst_pad_set_link_function (synaesthesia->srcpad, gst_synaesthesia_src_link);
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GST_FLAG_SET (synaesthesia, GST_ELEMENT_EVENT_AWARE);
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/* reset the initial video state */
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synaesthesia->width = 320;
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synaesthesia->height = 200;
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synaesthesia->fps = 25.; /* desired frame rate */
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synaesthesia->adapter = gst_adapter_new ();
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/* reset the initial video state */
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synaesthesia->width = SYNAES_WIDTH;
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synaesthesia->height = SYNAES_HEIGHT;
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synaesthesia->fps = 25.0; /* desired frame rate */
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synaesthesia->sample_rate = 0;
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synaesthesia->channels = 2;
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synaesthesia->audio_basetime = GST_CLOCK_TIME_NONE;
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synaesthesia->samples_consumed = 0;
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synaesthesia_init (synaesthesia->width, synaesthesia->height);
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}
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static void
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gst_synaesthesia_dispose (GObject * object)
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{
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GstSynaesthesia *synaesthesia;
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synaesthesia = GST_SYNAESTHESIA (object);
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if (synaesthesia->adapter) {
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g_object_unref (synaesthesia->adapter);
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synaesthesia->adapter = NULL;
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}
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gst_synaesthesia_finalize (GObject * object)
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{
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GstSynaesthesia *synaesthesia;
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synaesthesia = GST_SYNAESTHESIA (object);
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synaesthesia_close ();
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstPadLinkReturn
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gst_synaesthesia_sink_link (GstPad * pad, const GstCaps * caps)
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{
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GstSynaesthesia *synaesthesia;
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GstStructure *structure;
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gint channels;
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gint rate;
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synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "channels", &channels) ||
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!gst_structure_get_int (structure, "rate", &rate)) {
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return GST_PAD_LINK_REFUSED;
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}
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if (synaesthesia->channels != 2)
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return GST_PAD_LINK_REFUSED;
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synaesthesia->sample_rate = rate;
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return GST_PAD_LINK_OK;
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}
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static GstCaps *
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gst_synaesthesia_src_getcaps (GstPad * pad)
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{
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GstCaps *caps;
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const GstCaps *templcaps;
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gint i;
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templcaps = gst_pad_get_pad_template_caps (pad);
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caps = gst_caps_copy (templcaps);
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for (i = 0; i < gst_caps_get_size (caps); i++) {
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GstStructure *structure = gst_caps_get_structure (caps, i);
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gst_structure_set (structure, "width", G_TYPE_INT, SYNAES_WIDTH, "height",
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G_TYPE_INT, SYNAES_HEIGHT, NULL);
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}
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return caps;
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}
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static GstPadLinkReturn
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gst_synaesthesia_src_link (GstPad * pad, const GstCaps * caps)
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{
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GstSynaesthesia *synaesthesia;
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GstStructure *structure;
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gint w, h;
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gdouble fps;
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synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
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structure = gst_caps_get_structure (caps, 0);
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if (!gst_structure_get_int (structure, "width", &w) ||
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!gst_structure_get_int (structure, "height", &h) ||
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!gst_structure_get_double (structure, "framerate", &fps)) {
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return GST_PAD_LINK_REFUSED;
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}
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if ((w != SYNAES_WIDTH) || (h != SYNAES_HEIGHT))
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return GST_PAD_LINK_REFUSED;
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synaesthesia->width = w;
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synaesthesia->height = h;
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synaesthesia->fps = fps;
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synaesthesia_init (synaesthesia->width, synaesthesia->height);
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return GST_PAD_LINK_OK;
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}
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@ -222,10 +316,8 @@ gst_synaesthesia_chain (GstPad * pad, GstData * _data)
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{
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GstBuffer *bufin = GST_BUFFER (_data);
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GstSynaesthesia *synaesthesia;
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GstBuffer *bufout;
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guint32 samples_in;
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gint16 *data;
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gint i;
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guint32 bytesperread;
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gint samples_per_frame;
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synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
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@ -240,7 +332,9 @@ gst_synaesthesia_chain (GstPad * pad, GstData * _data)
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gint64 value = 0;
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gst_event_discont_get_value (event, GST_FORMAT_TIME, &value);
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synaesthesia->next_time = value;
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synaesthesia->audio_basetime = value;
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synaesthesia->samples_consumed = 0;
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gst_adapter_clear (synaesthesia->adapter);
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}
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default:
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gst_pad_event_default (pad, event);
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@ -249,95 +343,55 @@ gst_synaesthesia_chain (GstPad * pad, GstData * _data)
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return;
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}
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samples_in = GST_BUFFER_SIZE (bufin) / sizeof (gint16);
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GST_DEBUG ("input buffer has %d samples", samples_in);
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/* FIXME: should really select the first 1024 samples after the timestamp. */
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if (GST_BUFFER_TIMESTAMP (bufin) < synaesthesia->next_time
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|| samples_in < 1024) {
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GST_DEBUG ("timestamp is %" G_GUINT64_FORMAT ": want >= %" G_GUINT64_FORMAT,
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GST_BUFFER_TIMESTAMP (bufin), synaesthesia->next_time);
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if (!GST_PAD_IS_USABLE (synaesthesia->srcpad)) {
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gst_buffer_unref (bufin);
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return;
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}
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data = (gint16 *) GST_BUFFER_DATA (bufin);
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for (i = 0; i < 512; i++) {
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synaesthesia->datain[0][i] = *data++;
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synaesthesia->datain[1][i] = *data++;
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}
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if (synaesthesia->audio_basetime == GST_CLOCK_TIME_NONE)
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synaesthesia->audio_basetime = GST_BUFFER_TIMESTAMP (bufin);
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if (synaesthesia->first_buffer) {
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synaesthesia_init (synaesthesia->width, synaesthesia->height);
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if (synaesthesia->audio_basetime == GST_CLOCK_TIME_NONE)
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synaesthesia->audio_basetime = 0;
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synaesthesia->first_buffer = FALSE;
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}
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bytesperread = SYNAES_SAMPLES * synaesthesia->channels * sizeof (gint16);
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samples_per_frame = synaesthesia->sample_rate / synaesthesia->fps;
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bufout = gst_buffer_new ();
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GST_BUFFER_SIZE (bufout) = synaesthesia->width * synaesthesia->height * 4;
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GST_BUFFER_DATA (bufout) =
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(guchar *) synaesthesia_update (synaesthesia->datain);
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GST_BUFFER_TIMESTAMP (bufout) = synaesthesia->next_time;
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GST_BUFFER_FLAG_SET (bufout, GST_BUFFER_DONTFREE);
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gst_adapter_push (synaesthesia->adapter, bufin);
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synaesthesia->next_time += GST_SECOND / synaesthesia->fps;
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while (gst_adapter_available (synaesthesia->adapter) >
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MAX (bytesperread,
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samples_per_frame * synaesthesia->channels * sizeof (gint16))) {
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const guint16 *data =
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(const guint16 *) gst_adapter_peek (synaesthesia->adapter,
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bytesperread);
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GstBuffer *bufout;
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guchar *out_frame;
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GstClockTimeDiff frame_duration = GST_SECOND / synaesthesia->fps;
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gint i;
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gst_pad_push (synaesthesia->srcpad, GST_DATA (bufout));
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for (i = 0; i < SYNAES_SAMPLES; i++) {
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synaesthesia->datain[0][i] = *data++;
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synaesthesia->datain[1][i] = *data++;
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}
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gst_buffer_unref (bufin);
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bufout =
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gst_buffer_new_and_alloc (synaesthesia->width * synaesthesia->height *
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4);
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GST_BUFFER_TIMESTAMP (bufout) =
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synaesthesia->audio_basetime +
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(GST_SECOND * synaesthesia->samples_consumed /
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synaesthesia->sample_rate);
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GST_BUFFER_DURATION (bufout) = frame_duration;
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GST_BUFFER_SIZE (bufout) = synaesthesia->width * synaesthesia->height * 4;
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GST_DEBUG ("Synaesthesia: exiting chainfunc");
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out_frame = (guchar *) synaesthesia_update (synaesthesia->datain);
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memcpy (GST_BUFFER_DATA (bufout), out_frame, GST_BUFFER_SIZE (bufout));
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gst_pad_push (synaesthesia->srcpad, GST_DATA (bufout));
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}
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static void
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gst_synaesthesia_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstSynaesthesia *synaesthesia;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_SYNAESTHESIA (object));
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synaesthesia = GST_SYNAESTHESIA (object);
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switch (prop_id) {
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case ARG_WIDTH:
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synaesthesia->width = g_value_get_int (value);
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break;
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case ARG_HEIGHT:
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synaesthesia->height = g_value_get_int (value);
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break;
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case ARG_FPS:
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synaesthesia->fps = g_value_get_float (value);
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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_synaesthesia_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstSynaesthesia *synaesthesia;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail (GST_IS_SYNAESTHESIA (object));
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synaesthesia = GST_SYNAESTHESIA (object);
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switch (prop_id) {
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case ARG_WIDTH:
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g_value_set_int (value, synaesthesia->width);
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break;
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case ARG_HEIGHT:
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g_value_set_int (value, synaesthesia->height);
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break;
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case ARG_FPS:
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g_value_set_float (value, synaesthesia->fps);
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break;
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default:
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break;
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synaesthesia->samples_consumed += samples_per_frame;
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gst_adapter_flush (synaesthesia->adapter, samples_per_frame *
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synaesthesia->channels * sizeof (gint16));
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}
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}
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@ -350,8 +404,8 @@ gst_synaesthesia_change_state (GstElement * element)
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switch (GST_STATE_TRANSITION (element)) {
|
||||
case GST_STATE_READY_TO_PAUSED:
|
||||
synaesthesia->next_time = 0;
|
||||
synaesthesia->first_buffer = TRUE;
|
||||
synaesthesia->audio_basetime = GST_CLOCK_TIME_NONE;
|
||||
gst_adapter_clear (synaesthesia->adapter);
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
@ -365,6 +419,9 @@ gst_synaesthesia_change_state (GstElement * element)
|
|||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
if (!gst_library_load ("gstbytestream"))
|
||||
return FALSE;
|
||||
|
||||
return gst_element_register (plugin, "synaesthesia", GST_RANK_NONE,
|
||||
GST_TYPE_SYNAESTHESIA);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue