--- /dev/null
+/* GStreamer
+ * Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstadapter.h>
+#include <gst/video/video.h>
+#include <gst/audio/audio.h>
+#include <libvisual/libvisual.h>
+
+#define GST_TYPE_VISUAL (gst_visual_get_type())
+#define GST_IS_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VISUAL))
+#define GST_VISUAL(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VISUAL,GstVisual))
+#define GST_IS_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VISUAL))
+#define GST_VISUAL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VISUAL,GstVisualClass))
+#define GST_VISUAL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_VISUAL, GstVisualClass))
+
+typedef struct _GstVisual GstVisual;
+typedef struct _GstVisualClass GstVisualClass;
+
+GST_DEBUG_CATEGORY_STATIC (libvisual_debug);
+#define GST_CAT_DEFAULT (libvisual_debug)
+
+/* amounf of samples before we can feed libvisual */
+#define VISUAL_SAMPLES 512
+
+#define DEFAULT_WIDTH 320
+#define DEFAULT_HEIGHT 240
+#define DEFAULT_FPS_N 25
+#define DEFAULT_FPS_D 1
+
+struct _GstVisual
+{
+ GstElement element;
+
+ /* pads */
+ GstPad *sinkpad;
+ GstPad *srcpad;
+ GstSegment segment;
+
+ /* libvisual stuff */
+ VisAudio *audio;
+ VisVideo *video;
+ VisActor *actor;
+
+ /* audio/video state */
+ gint channels;
+ gint rate; /* Input samplerate */
+ gint bps;
+
+ /* framerate numerator & denominator */
+ gint fps_n;
+ gint fps_d;
+ gint width;
+ gint height;
+ GstClockTime duration;
+ guint outsize;
+
+ /* samples per frame based on caps */
+ guint spf;
+
+ /* state stuff */
+ GstAdapter *adapter;
+ guint count;
+
+ /* QoS stuff *//* with LOCK */
+ gdouble proportion;
+ GstClockTime earliest_time;
+};
+
+struct _GstVisualClass
+{
+ GstElementClass parent_class;
+
+ VisPluginRef *plugin;
+};
+
+GType gst_visual_get_type (void);
+
+
+static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN "; "
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ GST_VIDEO_CAPS_RGB "; "
+#else
+ GST_VIDEO_CAPS_BGR "; "
+#endif
+ GST_VIDEO_CAPS_RGB_16)
+ );
+
+static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, "
+ "width = (int) 16, "
+ "depth = (int) 16, "
+ "endianness = (int) BYTE_ORDER, "
+ "signed = (boolean) TRUE, " "channels = (int) { 1, 2 }, "
+#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
+ "rate = (int) { 8000, 11250, 22500, 32000, 44100, 48000, 96000 }"
+#else
+ "rate = (int) [ 1000, MAX ]"
+#endif
+ )
+ );
+
+
+static void gst_visual_class_init (gpointer g_class, gpointer class_data);
+static void gst_visual_init (GstVisual * visual);
+static void gst_visual_dispose (GObject * object);
+
+static GstStateChangeReturn gst_visual_change_state (GstElement * element,
+ GstStateChange transition);
+static GstFlowReturn gst_visual_chain (GstPad * pad, GstBuffer * buffer);
+static gboolean gst_visual_sink_event (GstPad * pad, GstEvent * event);
+static gboolean gst_visual_src_event (GstPad * pad, GstEvent * event);
+
+static gboolean gst_visual_src_query (GstPad * pad, GstQuery * query);
+
+static gboolean gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps);
+static gboolean gst_visual_src_setcaps (GstPad * pad, GstCaps * caps);
+static GstCaps *gst_visual_getcaps (GstPad * pad);
+static void libvisual_log_handler (const char *message, const char *funcname,
+ void *priv);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_visual_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY (type == 0)) {
+ static const GTypeInfo info = {
+ sizeof (GstVisualClass),
+ NULL,
+ NULL,
+ gst_visual_class_init,
+ NULL,
+ NULL,
+ sizeof (GstVisual),
+ 0,
+ (GInstanceInitFunc) gst_visual_init,
+ };
+
+ type = g_type_register_static (GST_TYPE_ELEMENT, "GstVisual", &info, 0);
+ }
+ return type;
+}
+
+static void
+libvisual_log_handler (const char *message, const char *funcname, void *priv)
+{
+ GST_CAT_LEVEL_LOG (libvisual_debug, (GstDebugLevel) (priv), NULL, "%s - %s",
+ funcname, message);
+}
+
+static void
+gst_visual_class_init (gpointer g_class, gpointer class_data)
+{
+ GstVisualClass *klass = GST_VISUAL_CLASS (g_class);
+ GstElementClass *element = GST_ELEMENT_CLASS (g_class);
+ GObjectClass *object = G_OBJECT_CLASS (g_class);
+
+ klass->plugin = class_data;
+
+ element->change_state = gst_visual_change_state;
+
+ if (class_data == NULL) {
+ parent_class = g_type_class_peek_parent (g_class);
+ } else {
+ char *longname = g_strdup_printf ("libvisual %s plugin v.%s",
+ klass->plugin->info->name, klass->plugin->info->version);
+
+ /* FIXME: improve to only register what plugin supports? */
+ gst_element_class_add_pad_template (element,
+ gst_static_pad_template_get (&src_template));
+ gst_element_class_add_pad_template (element,
+ gst_static_pad_template_get (&sink_template));
+ gst_element_class_set_details_simple (element,
+ longname, "Visualization",
+ klass->plugin->info->about, "Benjamin Otte <otte@gnome.org>");
+
+ g_free (longname);
+ }
+
+ object->dispose = gst_visual_dispose;
+}
+
+static void
+gst_visual_init (GstVisual * visual)
+{
+ /* create the sink and src pads */
+ visual->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
+ gst_pad_set_setcaps_function (visual->sinkpad, gst_visual_sink_setcaps);
+ gst_pad_set_chain_function (visual->sinkpad, gst_visual_chain);
+ gst_pad_set_event_function (visual->sinkpad, gst_visual_sink_event);
+ gst_element_add_pad (GST_ELEMENT (visual), visual->sinkpad);
+
+ visual->srcpad = gst_pad_new_from_static_template (&src_template, "src");
+ gst_pad_set_setcaps_function (visual->srcpad, gst_visual_src_setcaps);
+ gst_pad_set_getcaps_function (visual->srcpad, gst_visual_getcaps);
+ gst_pad_set_event_function (visual->srcpad, gst_visual_src_event);
+ gst_pad_set_query_function (visual->srcpad, gst_visual_src_query);
+ gst_element_add_pad (GST_ELEMENT (visual), visual->srcpad);
+
+ visual->adapter = gst_adapter_new ();
+}
+
+static void
+gst_visual_clear_actors (GstVisual * visual)
+{
+ if (visual->actor) {
+ visual_object_unref (VISUAL_OBJECT (visual->actor));
+ visual->actor = NULL;
+ }
+ if (visual->video) {
+ visual_object_unref (VISUAL_OBJECT (visual->video));
+ visual->video = NULL;
+ }
+ if (visual->audio) {
+ visual_object_unref (VISUAL_OBJECT (visual->audio));
+ visual->audio = NULL;
+ }
+}
+
+static void
+gst_visual_dispose (GObject * object)
+{
+ GstVisual *visual = GST_VISUAL (object);
+
+ if (visual->adapter) {
+ g_object_unref (visual->adapter);
+ visual->adapter = NULL;
+ }
+ gst_visual_clear_actors (visual);
+
+ GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
+}
+
+static void
+gst_visual_reset (GstVisual * visual)
+{
+ gst_adapter_clear (visual->adapter);
+ gst_segment_init (&visual->segment, GST_FORMAT_UNDEFINED);
+
+ GST_OBJECT_LOCK (visual);
+ visual->proportion = 1.0;
+ visual->earliest_time = -1;
+ GST_OBJECT_UNLOCK (visual);
+}
+
+static GstCaps *
+gst_visual_getcaps (GstPad * pad)
+{
+ GstCaps *ret;
+ GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
+ int depths;
+
+ if (!visual->actor) {
+ ret = gst_caps_copy (gst_pad_get_pad_template_caps (visual->srcpad));
+ goto beach;
+ }
+
+ ret = gst_caps_new_empty ();
+ depths = visual_actor_get_supported_depth (visual->actor);
+ if (depths < 0) {
+ /* FIXME: set an error */
+ goto beach;
+ }
+ if (depths == VISUAL_VIDEO_DEPTH_GL) {
+ /* We can't handle GL only plugins */
+ goto beach;
+ }
+
+ GST_DEBUG_OBJECT (visual, "libvisual plugin supports depths %u (0x%04x)",
+ depths, depths);
+ /* if (depths & VISUAL_VIDEO_DEPTH_32BIT) Always supports 32bit output */
+ gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_xRGB_HOST_ENDIAN));
+
+ if (depths & VISUAL_VIDEO_DEPTH_24BIT) {
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+ gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB));
+#else
+ gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_BGR));
+#endif
+ }
+ if (depths & VISUAL_VIDEO_DEPTH_16BIT) {
+ gst_caps_append (ret, gst_caps_from_string (GST_VIDEO_CAPS_RGB_16));
+ }
+
+beach:
+
+ GST_DEBUG_OBJECT (visual, "returning caps %" GST_PTR_FORMAT, ret);
+ gst_object_unref (visual);
+ return ret;
+}
+
+static gboolean
+gst_visual_src_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
+ GstStructure *structure;
+ gint depth, pitch;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ GST_DEBUG_OBJECT (visual, "src pad got caps %" GST_PTR_FORMAT, caps);
+
+ if (!gst_structure_get_int (structure, "width", &visual->width))
+ goto error;
+ if (!gst_structure_get_int (structure, "height", &visual->height))
+ goto error;
+ if (!gst_structure_get_int (structure, "bpp", &depth))
+ goto error;
+ if (!gst_structure_get_fraction (structure, "framerate", &visual->fps_n,
+ &visual->fps_d))
+ goto error;
+
+ visual_video_set_depth (visual->video,
+ visual_video_depth_enum_from_value (depth));
+ visual_video_set_dimension (visual->video, visual->width, visual->height);
+ pitch = GST_ROUND_UP_4 (visual->width * visual->video->bpp);
+ visual_video_set_pitch (visual->video, pitch);
+ visual_actor_video_negotiate (visual->actor, 0, FALSE, FALSE);
+
+ /* precalc some values */
+ visual->outsize = visual->video->height * pitch;
+ visual->spf =
+ gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
+ visual->duration =
+ gst_util_uint64_scale_int (GST_SECOND, visual->fps_d, visual->fps_n);
+
+ gst_object_unref (visual);
+ return TRUE;
+
+ /* ERRORS */
+error:
+ {
+ GST_DEBUG_OBJECT (visual, "error parsing caps");
+ gst_object_unref (visual);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_visual_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
+ GstStructure *structure;
+
+ structure = gst_caps_get_structure (caps, 0);
+
+ gst_structure_get_int (structure, "channels", &visual->channels);
+ gst_structure_get_int (structure, "rate", &visual->rate);
+
+ /* this is how many samples we need to fill one frame at the requested
+ * framerate. */
+ if (visual->fps_n != 0) {
+ visual->spf =
+ gst_util_uint64_scale_int (visual->rate, visual->fps_d, visual->fps_n);
+ }
+ visual->bps = visual->channels * sizeof (gint16);
+
+ gst_object_unref (visual);
+ return TRUE;
+}
+
+static gboolean
+gst_vis_src_negotiate (GstVisual * visual)
+{
+ GstCaps *othercaps, *target;
+ GstStructure *structure;
+ GstCaps *caps;
+
+ caps = gst_pad_get_caps (visual->srcpad);
+
+ /* see what the peer can do */
+ othercaps = gst_pad_peer_get_caps (visual->srcpad);
+ if (othercaps) {
+ target = gst_caps_intersect (othercaps, caps);
+ gst_caps_unref (othercaps);
+ gst_caps_unref (caps);
+
+ if (gst_caps_is_empty (target))
+ goto no_format;
+
+ gst_caps_truncate (target);
+ } else {
+ /* need a copy, we'll be modifying it when fixating */
+ target = gst_caps_copy (caps);
+ gst_caps_unref (caps);
+ }
+
+ /* fixate in case something is not fixed. This does nothing if the value is
+ * already fixed. For video we always try to fixate to something like
+ * 320x240x25 by convention. */
+ structure = gst_caps_get_structure (target, 0);
+ gst_structure_fixate_field_nearest_int (structure, "width", DEFAULT_WIDTH);
+ gst_structure_fixate_field_nearest_int (structure, "height", DEFAULT_HEIGHT);
+ gst_structure_fixate_field_nearest_fraction (structure, "framerate",
+ DEFAULT_FPS_N, DEFAULT_FPS_D);
+
+ gst_pad_set_caps (visual->srcpad, target);
+ gst_caps_unref (target);
+
+ return TRUE;
+
+ /* ERRORS */
+no_format:
+ {
+ GST_ELEMENT_ERROR (visual, STREAM, FORMAT, (NULL),
+ ("could not negotiate output format"));
+ gst_caps_unref (target);
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_visual_sink_event (GstPad * pad, GstEvent * event)
+{
+ GstVisual *visual;
+ gboolean res;
+
+ visual = GST_VISUAL (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_START:
+ res = gst_pad_push_event (visual->srcpad, event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ /* reset QoS and adapter. */
+ gst_visual_reset (visual);
+ res = gst_pad_push_event (visual->srcpad, event);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ GstFormat format;
+ gdouble rate, arate;
+ gint64 start, stop, time;
+ gboolean update;
+
+ /* the newsegment values are used to clip the input samples
+ * and to convert the incomming timestamps to running time so
+ * we can do QoS */
+ gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
+ &start, &stop, &time);
+
+ /* now configure the values */
+ gst_segment_set_newsegment_full (&visual->segment, update,
+ rate, arate, format, start, stop, time);
+
+ /* and forward */
+ res = gst_pad_push_event (visual->srcpad, event);
+ break;
+ }
+ default:
+ res = gst_pad_push_event (visual->srcpad, event);
+ break;
+ }
+
+ gst_object_unref (visual);
+ return res;
+}
+
+static gboolean
+gst_visual_src_event (GstPad * pad, GstEvent * event)
+{
+ GstVisual *visual;
+ gboolean res;
+
+ visual = GST_VISUAL (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_QOS:
+ {
+ gdouble proportion;
+ GstClockTimeDiff diff;
+ GstClockTime timestamp;
+
+ gst_event_parse_qos (event, &proportion, &diff, ×tamp);
+
+ /* save stuff for the _chain function */
+ GST_OBJECT_LOCK (visual);
+ visual->proportion = proportion;
+ if (diff >= 0)
+ /* we're late, this is a good estimate for next displayable
+ * frame (see part-qos.txt) */
+ visual->earliest_time = timestamp + 2 * diff + visual->duration;
+ else
+ visual->earliest_time = timestamp + diff;
+
+ GST_OBJECT_UNLOCK (visual);
+
+ res = gst_pad_push_event (visual->sinkpad, event);
+ break;
+ }
+ default:
+ res = gst_pad_push_event (visual->sinkpad, event);
+ break;
+ }
+
+ gst_object_unref (visual);
+ return res;
+}
+
+static gboolean
+gst_visual_src_query (GstPad * pad, GstQuery * query)
+{
+ gboolean res;
+ GstVisual *visual;
+
+ visual = GST_VISUAL (gst_pad_get_parent (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_LATENCY:
+ {
+ /* We need to send the query upstream and add the returned latency to our
+ * own */
+ GstClockTime min_latency, max_latency;
+ gboolean us_live;
+ GstClockTime our_latency;
+ guint max_samples;
+
+ if ((res = gst_pad_peer_query (visual->sinkpad, query))) {
+ gst_query_parse_latency (query, &us_live, &min_latency, &max_latency);
+
+ GST_DEBUG_OBJECT (visual, "Peer latency: min %"
+ GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
+
+ /* the max samples we must buffer buffer */
+ max_samples = MAX (VISUAL_SAMPLES, visual->spf);
+ our_latency =
+ gst_util_uint64_scale_int (max_samples, GST_SECOND, visual->rate);
+
+ GST_DEBUG_OBJECT (visual, "Our latency: %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (our_latency));
+
+ /* we add some latency but only if we need to buffer more than what
+ * upstream gives us */
+ min_latency += our_latency;
+ if (max_latency != -1)
+ max_latency += our_latency;
+
+ GST_DEBUG_OBJECT (visual, "Calculated total latency : min %"
+ GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
+
+ gst_query_set_latency (query, TRUE, min_latency, max_latency);
+ }
+ break;
+ }
+ default:
+ res = gst_pad_peer_query (visual->sinkpad, query);
+ break;
+ }
+
+ gst_object_unref (visual);
+
+ return res;
+}
+
+/* allocate and output buffer, if no format was negotiated, this
+ * function will negotiate one. After calling this function, a
+ * reverse negotiation could have happened. */
+static GstFlowReturn
+get_buffer (GstVisual * visual, GstBuffer ** outbuf)
+{
+ GstFlowReturn ret;
+
+ /* we don't know an output format yet, pick one */
+ if (GST_PAD_CAPS (visual->srcpad) == NULL) {
+ if (!gst_vis_src_negotiate (visual))
+ return GST_FLOW_NOT_NEGOTIATED;
+ }
+
+ GST_DEBUG_OBJECT (visual, "allocating output buffer with caps %"
+ GST_PTR_FORMAT, GST_PAD_CAPS (visual->srcpad));
+
+ /* now allocate a buffer with the last negotiated format.
+ * Downstream could renegotiate a new format, which will trigger
+ * our setcaps function on the source pad. */
+ ret =
+ gst_pad_alloc_buffer_and_set_caps (visual->srcpad,
+ GST_BUFFER_OFFSET_NONE, visual->outsize,
+ GST_PAD_CAPS (visual->srcpad), outbuf);
+
+ /* no buffer allocated, we don't care why. */
+ if (ret != GST_FLOW_OK)
+ return ret;
+
+ return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_visual_chain (GstPad * pad, GstBuffer * buffer)
+{
+ GstBuffer *outbuf = NULL;
+ guint i;
+ GstVisual *visual = GST_VISUAL (gst_pad_get_parent (pad));
+ GstFlowReturn ret = GST_FLOW_OK;
+ guint avail;
+
+ GST_DEBUG_OBJECT (visual, "chain function called");
+
+ /* If we don't have an output format yet, preallocate a buffer to try and
+ * set one */
+ if (GST_PAD_CAPS (visual->srcpad) == NULL) {
+ ret = get_buffer (visual, &outbuf);
+ if (ret != GST_FLOW_OK) {
+ gst_buffer_unref (buffer);
+ goto beach;
+ }
+ }
+
+ /* resync on DISCONT */
+ if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
+ gst_adapter_clear (visual->adapter);
+ }
+
+ GST_DEBUG_OBJECT (visual,
+ "Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
+ GST_BUFFER_SIZE (buffer) / visual->bps, GST_BUFFER_TIMESTAMP (buffer));
+
+ gst_adapter_push (visual->adapter, buffer);
+
+ while (TRUE) {
+ gboolean need_skip;
+ const guint16 *data;
+ guint64 dist, timestamp;
+
+ GST_DEBUG_OBJECT (visual, "processing buffer");
+
+ avail = gst_adapter_available (visual->adapter);
+ GST_DEBUG_OBJECT (visual, "avail now %u", avail);
+
+ /* we need at least VISUAL_SAMPLES samples */
+ if (avail < VISUAL_SAMPLES * visual->bps)
+ break;
+
+ /* we need at least enough samples to make one frame */
+ if (avail < visual->spf * visual->bps)
+ break;
+
+ /* get timestamp of the current adapter byte */
+ timestamp = gst_adapter_prev_timestamp (visual->adapter, &dist);
+ if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
+ /* convert bytes to time */
+ dist /= visual->bps;
+ timestamp += gst_util_uint64_scale_int (dist, GST_SECOND, visual->rate);
+ }
+
+ if (timestamp != -1) {
+ gint64 qostime;
+
+ /* QoS is done on running time */
+ qostime = gst_segment_to_running_time (&visual->segment, GST_FORMAT_TIME,
+ timestamp);
+ qostime += visual->duration;
+
+ GST_OBJECT_LOCK (visual);
+ /* check for QoS, don't compute buffers that are known to be late */
+ need_skip = visual->earliest_time != -1 &&
+ qostime <= visual->earliest_time;
+ GST_OBJECT_UNLOCK (visual);
+
+ if (need_skip) {
+ GST_WARNING_OBJECT (visual,
+ "QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (qostime), GST_TIME_ARGS (visual->earliest_time));
+ goto skip;
+ }
+ }
+
+ /* Read VISUAL_SAMPLES samples per channel */
+ data =
+ (const guint16 *) gst_adapter_peek (visual->adapter,
+ VISUAL_SAMPLES * visual->bps);
+
+#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
+ {
+ VisBuffer *lbuf, *rbuf;
+ guint16 ldata[VISUAL_SAMPLES], rdata[VISUAL_SAMPLES];
+ VisAudioSampleRateType rate;
+
+ lbuf = visual_buffer_new_with_buffer (ldata, sizeof (ldata), NULL);
+ rbuf = visual_buffer_new_with_buffer (rdata, sizeof (rdata), NULL);
+
+ if (visual->channels == 2) {
+ for (i = 0; i < VISUAL_SAMPLES; i++) {
+ ldata[i] = *data++;
+ rdata[i] = *data++;
+ }
+ } else {
+ for (i = 0; i < VISUAL_SAMPLES; i++) {
+ ldata[i] = *data;
+ rdata[i] = *data++;
+ }
+ }
+
+ switch (visual->rate) {
+ case 8000:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_8000;
+ break;
+ case 11250:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_11250;
+ break;
+ case 22500:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_22500;
+ break;
+ case 32000:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_32000;
+ break;
+ case 44100:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_44100;
+ break;
+ case 48000:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_48000;
+ break;
+ case 96000:
+ rate = VISUAL_AUDIO_SAMPLE_RATE_96000;
+ break;
+ default:
+ visual_object_unref (VISUAL_OBJECT (lbuf));
+ visual_object_unref (VISUAL_OBJECT (rbuf));
+ GST_ERROR_OBJECT (visual, "unsupported rate %d", visual->rate);
+ ret = GST_FLOW_ERROR;
+ goto beach;
+ break;
+ }
+
+ visual_audio_samplepool_input_channel (visual->audio->samplepool,
+ lbuf,
+ rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16,
+ (char *) VISUAL_AUDIO_CHANNEL_LEFT);
+ visual_audio_samplepool_input_channel (visual->audio->samplepool, rbuf,
+ rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16,
+ (char *) VISUAL_AUDIO_CHANNEL_RIGHT);
+
+ visual_object_unref (VISUAL_OBJECT (lbuf));
+ visual_object_unref (VISUAL_OBJECT (rbuf));
+
+ }
+#else
+ if (visual->channels == 2) {
+ for (i = 0; i < VISUAL_SAMPLES; i++) {
+ visual->audio->plugpcm[0][i] = *data++;
+ visual->audio->plugpcm[1][i] = *data++;
+ }
+ } else {
+ for (i = 0; i < VISUAL_SAMPLES; i++) {
+ visual->audio->plugpcm[0][i] = *data;
+ visual->audio->plugpcm[1][i] = *data++;
+ }
+ }
+#endif
+
+ /* alloc a buffer if we don't have one yet, this happens
+ * when we pushed a buffer in this while loop before */
+ if (outbuf == NULL) {
+ ret = get_buffer (visual, &outbuf);
+ if (ret != GST_FLOW_OK) {
+ goto beach;
+ }
+ }
+ visual_video_set_buffer (visual->video, GST_BUFFER_DATA (outbuf));
+ visual_audio_analyze (visual->audio);
+ visual_actor_run (visual->actor, visual->audio);
+ visual_video_set_buffer (visual->video, NULL);
+ GST_DEBUG_OBJECT (visual, "rendered one frame");
+
+ GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
+ GST_BUFFER_DURATION (outbuf) = visual->duration;
+
+ ret = gst_pad_push (visual->srcpad, outbuf);
+ outbuf = NULL;
+
+ skip:
+ GST_DEBUG_OBJECT (visual, "finished frame, flushing %u samples from input",
+ visual->spf);
+
+ /* Flush out the number of samples per frame */
+ gst_adapter_flush (visual->adapter, visual->spf * visual->bps);
+
+ /* quit the loop if something was wrong */
+ if (ret != GST_FLOW_OK)
+ break;
+ }
+
+beach:
+
+ if (outbuf != NULL)
+ gst_buffer_unref (outbuf);
+
+ gst_object_unref (visual);
+
+ return ret;
+}
+
+static GstStateChangeReturn
+gst_visual_change_state (GstElement * element, GstStateChange transition)
+{
+ GstVisual *visual = GST_VISUAL (element);
+ GstStateChangeReturn ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ visual->actor =
+ visual_actor_new (GST_VISUAL_GET_CLASS (visual)->plugin->info->
+ plugname);
+ visual->video = visual_video_new ();
+ visual->audio = visual_audio_new ();
+ /* can't have a play without actors */
+ if (!visual->actor || !visual->video)
+ goto no_actors;
+
+ if (visual_actor_realize (visual->actor) != 0)
+ goto no_realize;
+
+ visual_actor_set_video (visual->actor, visual->video);
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ gst_visual_reset (visual);
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ gst_visual_clear_actors (visual);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+
+ /* ERRORS */
+no_actors:
+ {
+ GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
+ ("could not create actors"));
+ gst_visual_clear_actors (visual);
+ return GST_STATE_CHANGE_FAILURE;
+ }
+no_realize:
+ {
+ GST_ELEMENT_ERROR (visual, LIBRARY, INIT, (NULL),
+ ("could not realize actor"));
+ gst_visual_clear_actors (visual);
+ return GST_STATE_CHANGE_FAILURE;
+ }
+}
+
+static void
+make_valid_name (char *name)
+{
+ /*
+ * Replace invalid chars with _ in the type name
+ */
+ static const gchar extra_chars[] = "-_+";
+ gchar *p = name;
+
+ for (; *p; p++) {
+ int valid = ((p[0] >= 'A' && p[0] <= 'Z') ||
+ (p[0] >= 'a' && p[0] <= 'z') ||
+ (p[0] >= '0' && p[0] <= '9') || strchr (extra_chars, p[0]));
+ if (!valid)
+ *p = '_';
+ }
+}
+
+static gboolean
+gst_visual_actor_plugin_is_gl (VisObject * plugin, const gchar * name)
+{
+ gboolean is_gl;
+ gint depth;
+
+#if !defined(VISUAL_API_VERSION)
+
+ depth = VISUAL_PLUGIN_ACTOR (plugin)->depth;
+ is_gl = (depth == VISUAL_VIDEO_DEPTH_GL);
+
+#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
+
+ depth = VISUAL_ACTOR_PLUGIN (plugin)->vidoptions.depth;
+ /* FIXME: how to figure this out correctly in 0.4? */
+ is_gl = (depth & VISUAL_VIDEO_DEPTH_GL) == VISUAL_VIDEO_DEPTH_GL;
+
+#else
+# error what libvisual version is this?
+#endif
+
+ if (!is_gl) {
+ GST_DEBUG ("plugin %s is not a GL plugin (%d), registering", name, depth);
+ } else {
+ GST_DEBUG ("plugin %s is a GL plugin (%d), ignoring", name, depth);
+ }
+
+ return is_gl;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ guint i, count;
+ VisList *list;
+
+ GST_DEBUG_CATEGORY_INIT (libvisual_debug, "libvisual", 0,
+ "libvisual audio visualisations");
+
+#ifdef LIBVISUAL_PLUGINSBASEDIR
+ gst_plugin_add_dependency_simple (plugin, "HOME/.libvisual/actor",
+ LIBVISUAL_PLUGINSBASEDIR "/actor", NULL, GST_PLUGIN_DEPENDENCY_FLAG_NONE);
+#endif
+
+ visual_log_set_verboseness (VISUAL_LOG_VERBOSENESS_LOW);
+ visual_log_set_info_handler (libvisual_log_handler, (void *) GST_LEVEL_INFO);
+ visual_log_set_warning_handler (libvisual_log_handler,
+ (void *) GST_LEVEL_WARNING);
+ visual_log_set_critical_handler (libvisual_log_handler,
+ (void *) GST_LEVEL_ERROR);
+ visual_log_set_error_handler (libvisual_log_handler,
+ (void *) GST_LEVEL_ERROR);
+
+ if (!visual_is_initialized ())
+ if (visual_init (NULL, NULL) != 0)
+ return FALSE;
+
+ list = visual_actor_get_list ();
+
+#if !defined(VISUAL_API_VERSION)
+ count = visual_list_count (list);
+#elif VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000
+ count = visual_collection_size (VISUAL_COLLECTION (list));
+#endif
+
+ for (i = 0; i < count; i++) {
+ VisPluginRef *ref = visual_list_get (list, i);
+ VisPluginData *visplugin = NULL;
+ gboolean skip = FALSE;
+ GType type;
+ gchar *name;
+ GTypeInfo info = {
+ sizeof (GstVisualClass),
+ NULL,
+ NULL,
+ gst_visual_class_init,
+ NULL,
+ ref,
+ sizeof (GstVisual),
+ 0,
+ NULL
+ };
+
+ visplugin = visual_plugin_load (ref);
+
+ if (ref->info->plugname == NULL)
+ continue;
+
+ /* Blacklist some plugins */
+ if (strcmp (ref->info->plugname, "gstreamer") == 0 ||
+ strcmp (ref->info->plugname, "gdkpixbuf") == 0) {
+ skip = TRUE;
+ } else {
+ /* Ignore plugins that only support GL output for now */
+ skip = gst_visual_actor_plugin_is_gl (visplugin->info->plugin,
+ visplugin->info->plugname);
+ }
+
+ visual_plugin_unload (visplugin);
+
+ if (!skip) {
+ name = g_strdup_printf ("GstVisual%s", ref->info->plugname);
+ make_valid_name (name);
+ type = g_type_register_static (GST_TYPE_VISUAL, name, &info, 0);
+ g_free (name);
+
+ name = g_strdup_printf ("libvisual_%s", ref->info->plugname);
+ make_valid_name (name);
+ if (!gst_element_register (plugin, name, GST_RANK_NONE, type)) {
+ g_free (name);
+ return FALSE;
+ }
+ g_free (name);
+ }
+ }
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "libvisual",
+ "libvisual visualization plugins",
+ plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
projects / mafwsubrenderer / blobdiff