diff options
Diffstat (limited to 'ext/libvisual/visual.c')
| -rw-r--r-- | ext/libvisual/visual.c | 960 |
1 files changed, 0 insertions, 960 deletions
diff --git a/ext/libvisual/visual.c b/ext/libvisual/visual.c deleted file mode 100644 index 8e0ef0ea..00000000 --- a/ext/libvisual/visual.c +++ /dev/null @@ -1,960 +0,0 @@ -/* 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) - -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_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 { - GstElementDetails details = { - NULL, - "Visualization", - klass->plugin->info->about, - "Benjamin Otte <otte@gnome.org>" - }; - - details.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 (element, &details); - g_free (details.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_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, *intersect; - 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) { - intersect = gst_caps_intersect (othercaps, caps); - gst_caps_unref (othercaps); - gst_caps_unref (caps); - - if (gst_caps_is_empty (intersect)) - goto no_format; - - target = gst_caps_copy_nth (intersect, 0); - gst_caps_unref (intersect); - } 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 - * 320x240x30 by convention. */ - structure = gst_caps_get_structure (target, 0); - gst_structure_fixate_field_nearest_int (structure, "width", 320); - gst_structure_fixate_field_nearest_int (structure, "height", 240); - gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1); - - 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 (intersect); - 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; -} - -/* 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 512 samples */ - if (avail < 512 * 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); - - 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 512 samples per channel */ - data = - (const guint16 *) gst_adapter_peek (visual->adapter, 512 * visual->bps); - -#if defined(VISUAL_API_VERSION) && VISUAL_API_VERSION >= 4000 && VISUAL_API_VERSION < 5000 - { - VisBuffer *lbuf, *rbuf; - guint16 ldata[512], rdata[512]; - 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 < 512; i++) { - ldata[i] = *data++; - rdata[i] = *data++; - } - } else { - for (i = 0; i < 512; 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, VISUAL_AUDIO_CHANNEL_LEFT); - visual_audio_samplepool_input_channel (visual->audio->samplepool, - rbuf, - rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, 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 < 512; i++) { - visual->audio->plugpcm[0][i] = *data++; - visual->audio->plugpcm[1][i] = *data++; - } - } else { - for (i = 0; i < 512; 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) |