/* GStreamer * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> * * 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 <string.h> #include "gstsmokeenc.h" #include <gst/video/video.h> /* elementfactory information */ GstElementDetails gst_smokeenc_details = { "Smoke image encoder", "Codec/Encoder/Image", "Encode images in the Smoke format", "Wim Taymans <wim@fluendo.com>", }; GST_DEBUG_CATEGORY (smokeenc_debug); #define GST_CAT_DEFAULT smokeenc_debug #define SMOKEENC_DEFAULT_MIN_QUALITY 10 #define SMOKEENC_DEFAULT_MAX_QUALITY 85 #define SMOKEENC_DEFAULT_THRESHOLD 3000 #define SMOKEENC_DEFAULT_KEYFRAME 20 /* SmokeEnc signals and args */ enum { FRAME_ENCODED, /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_MIN_QUALITY, ARG_MAX_QUALITY, ARG_THRESHOLD, ARG_KEYFRAME /* FILL ME */ }; static void gst_smokeenc_base_init (gpointer g_class); static void gst_smokeenc_class_init (GstSmokeEnc * klass); static void gst_smokeenc_init (GstSmokeEnc * smokeenc); static void gst_smokeenc_chain (GstPad * pad, GstData * _data); static GstPadLinkReturn gst_smokeenc_link (GstPad * pad, const GstCaps * caps); static GstCaps *gst_smokeenc_getcaps (GstPad * pad); static void gst_smokeenc_resync (GstSmokeEnc * smokeenc); static void gst_smokeenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_smokeenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstElementClass *parent_class = NULL; //static guint gst_smokeenc_signals[LAST_SIGNAL] = { 0 }; GType gst_smokeenc_get_type (void) { static GType smokeenc_type = 0; if (!smokeenc_type) { static const GTypeInfo smokeenc_info = { sizeof (GstSmokeEncClass), gst_smokeenc_base_init, NULL, (GClassInitFunc) gst_smokeenc_class_init, NULL, NULL, sizeof (GstSmokeEnc), 0, (GInstanceInitFunc) gst_smokeenc_init, }; smokeenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstSmokeEnc", &smokeenc_info, 0); } return smokeenc_type; } static GstStaticPadTemplate gst_smokeenc_sink_pad_template = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) ); static GstStaticPadTemplate gst_smokeenc_src_pad_template = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-smoke, " "width = (int) [ 16, 4096 ], " "height = (int) [ 16, 4096 ], " "framerate = (double) [ 1, MAX ]") ); static void gst_smokeenc_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_smokeenc_sink_pad_template)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_smokeenc_src_pad_template)); gst_element_class_set_details (element_class, &gst_smokeenc_details); } static void gst_smokeenc_class_init (GstSmokeEnc * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; parent_class = g_type_class_ref (GST_TYPE_ELEMENT); g_object_class_install_property (gobject_class, ARG_MIN_QUALITY, g_param_spec_int ("qmin", "Qmin", "Minimum quality", 0, 100, SMOKEENC_DEFAULT_MIN_QUALITY, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_MAX_QUALITY, g_param_spec_int ("qmax", "Qmax", "Maximum quality", 0, 100, SMOKEENC_DEFAULT_MAX_QUALITY, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_THRESHOLD, g_param_spec_int ("threshold", "Threshold", "Motion estimation threshold", 0, 100000000, SMOKEENC_DEFAULT_THRESHOLD, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, ARG_KEYFRAME, g_param_spec_int ("keyframe", "Keyframe", "Insert keyframe every N frames", 1, 100000, SMOKEENC_DEFAULT_KEYFRAME, G_PARAM_READWRITE)); gobject_class->set_property = gst_smokeenc_set_property; gobject_class->get_property = gst_smokeenc_get_property; GST_DEBUG_CATEGORY_INIT (smokeenc_debug, "smokeenc", 0, "Smoke encoding element"); } static void gst_smokeenc_init (GstSmokeEnc * smokeenc) { /* create the sink and src pads */ smokeenc->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get (&gst_smokeenc_sink_pad_template), "sink"); gst_pad_set_chain_function (smokeenc->sinkpad, gst_smokeenc_chain); gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps); gst_pad_set_link_function (smokeenc->sinkpad, gst_smokeenc_link); gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->sinkpad); smokeenc->srcpad = gst_pad_new_from_template (gst_static_pad_template_get (&gst_smokeenc_src_pad_template), "src"); gst_pad_set_getcaps_function (smokeenc->sinkpad, gst_smokeenc_getcaps); gst_pad_set_link_function (smokeenc->sinkpad, gst_smokeenc_link); gst_element_add_pad (GST_ELEMENT (smokeenc), smokeenc->srcpad); /* reset the initial video state */ smokeenc->width = 0; smokeenc->height = 0; smokeenc->frame = 0; smokeenc->need_header = TRUE; gst_smokeenc_resync (smokeenc); smokeenc->min_quality = SMOKEENC_DEFAULT_MIN_QUALITY; smokeenc->max_quality = SMOKEENC_DEFAULT_MAX_QUALITY; smokeenc->threshold = SMOKEENC_DEFAULT_THRESHOLD; smokeenc->keyframe = SMOKEENC_DEFAULT_KEYFRAME; } static GstCaps * gst_smokeenc_getcaps (GstPad * pad) { GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad)); GstPad *otherpad; GstCaps *caps; const char *name; int i; GstStructure *structure = NULL; /* we want to proxy properties like width, height and framerate from the other end of the element */ otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad; caps = gst_pad_get_allowed_caps (otherpad); if (pad == smokeenc->srcpad) { name = "image/x-smoke"; } else { name = "video/x-raw-yuv"; } for (i = 0; i < gst_caps_get_size (caps); i++) { structure = gst_caps_get_structure (caps, i); gst_structure_set_name (structure, name); gst_structure_remove_field (structure, "format"); /* ... but for the sink pad, we only do I420 anyway, so add that */ if (pad == smokeenc->sinkpad) { gst_structure_set (structure, "format", GST_TYPE_FOURCC, GST_STR_FOURCC ("I420"), NULL); } } return caps; } static GstPadLinkReturn gst_smokeenc_link (GstPad * pad, const GstCaps * caps) { GstSmokeEnc *smokeenc = GST_SMOKEENC (gst_pad_get_parent (pad)); GstStructure *structure; GstPadLinkReturn ret; GstCaps *othercaps; GstPad *otherpad; otherpad = (pad == smokeenc->srcpad) ? smokeenc->sinkpad : smokeenc->srcpad; structure = gst_caps_get_structure (caps, 0); gst_structure_get_double (structure, "framerate", &smokeenc->fps); gst_structure_get_int (structure, "width", &smokeenc->width); gst_structure_get_int (structure, "height", &smokeenc->height); othercaps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad)); gst_caps_set_simple (othercaps, "width", G_TYPE_INT, smokeenc->width, "height", G_TYPE_INT, smokeenc->height, "framerate", G_TYPE_DOUBLE, smokeenc->fps, NULL); ret = gst_pad_try_set_caps (smokeenc->srcpad, othercaps); gst_caps_free (othercaps); if (GST_PAD_LINK_SUCCESSFUL (ret)) { gst_smokeenc_resync (smokeenc); } return ret; } static void gst_smokeenc_resync (GstSmokeEnc * smokeenc) { GValue fps = { 0 }; GValue framerate = { 0 }; GST_DEBUG ("gst_smokeenc_resync: resync"); g_value_init (&fps, G_TYPE_DOUBLE); g_value_init (&framerate, GST_TYPE_FRACTION); g_value_set_double (&fps, smokeenc->fps); g_value_transform (&fps, &framerate); smokeenc->fps_num = gst_value_get_fraction_numerator (&framerate); smokeenc->fps_denom = gst_value_get_fraction_denominator (&framerate); smokecodec_encode_new (&smokeenc->info, smokeenc->width, smokeenc->height, smokeenc->fps_num, smokeenc->fps_denom); smokecodec_set_quality (smokeenc->info, smokeenc->min_quality, smokeenc->max_quality); GST_DEBUG ("gst_smokeenc_resync: resync done"); } static void gst_smokeenc_chain (GstPad * pad, GstData * _data) { GstBuffer *buf = GST_BUFFER (_data); GstSmokeEnc *smokeenc; guchar *data, *outdata; gulong size; gint outsize, encsize; GstBuffer *outbuf; SmokeCodecFlags flags; smokeenc = GST_SMOKEENC (GST_OBJECT_PARENT (pad)); data = GST_BUFFER_DATA (buf); size = GST_BUFFER_SIZE (buf); GST_DEBUG ("gst_smokeenc_chain: got buffer of %ld bytes in '%s'", size, GST_OBJECT_NAME (smokeenc)); if (smokeenc->need_header) { outbuf = gst_buffer_new (); outsize = 256; outdata = GST_BUFFER_DATA (outbuf) = g_malloc (outsize); GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf); GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf); smokecodec_encode_id (smokeenc->info, outdata, &encsize); GST_BUFFER_SIZE (outbuf) = encsize; gst_pad_push (smokeenc->srcpad, GST_DATA (outbuf)); smokeenc->need_header = FALSE; } outbuf = gst_buffer_new (); outsize = smokeenc->width * smokeenc->height * 3; outdata = GST_BUFFER_DATA (outbuf) = g_malloc (outsize); GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf); GST_BUFFER_DURATION (outbuf) = smokeenc->fps_denom * GST_SECOND / smokeenc->fps_num; flags = 0; if ((smokeenc->frame % smokeenc->keyframe) == 0) { flags |= SMOKECODEC_KEYFRAME; } smokecodec_set_quality (smokeenc->info, smokeenc->min_quality, smokeenc->max_quality); smokecodec_set_threshold (smokeenc->info, smokeenc->threshold); smokecodec_encode (smokeenc->info, data, flags, outdata, &encsize); gst_buffer_unref (buf); GST_BUFFER_SIZE (outbuf) = encsize; GST_BUFFER_OFFSET (outbuf) = smokeenc->frame; GST_BUFFER_OFFSET_END (outbuf) = smokeenc->frame + 1; gst_pad_push (smokeenc->srcpad, GST_DATA (outbuf)); smokeenc->frame++; } static void gst_smokeenc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstSmokeEnc *smokeenc; g_return_if_fail (GST_IS_SMOKEENC (object)); smokeenc = GST_SMOKEENC (object); switch (prop_id) { case ARG_MIN_QUALITY: smokeenc->min_quality = g_value_get_int (value); break; case ARG_MAX_QUALITY: smokeenc->max_quality = g_value_get_int (value); break; case ARG_THRESHOLD: smokeenc->threshold = g_value_get_int (value); break; case ARG_KEYFRAME: smokeenc->keyframe = g_value_get_int (value); break; default: break; } } static void gst_smokeenc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstSmokeEnc *smokeenc; g_return_if_fail (GST_IS_SMOKEENC (object)); smokeenc = GST_SMOKEENC (object); switch (prop_id) { case ARG_MIN_QUALITY: g_value_set_int (value, smokeenc->min_quality); break; case ARG_MAX_QUALITY: g_value_set_int (value, smokeenc->max_quality); break; case ARG_THRESHOLD: g_value_set_int (value, smokeenc->threshold); break; case ARG_KEYFRAME: g_value_set_int (value, smokeenc->keyframe); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }