/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) <2002> David A. Schleef * * 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. */ /** * SECTION:element-videotestsrc * * The videotestsrc element is used to produce test video data in a wide variaty * of formats. The video test data produced can be controlled with the "pattern" * property. * * * Example launch line * |[ * gst-launch -v videotestsrc pattern=snow ! ximagesink * ]| Shows random noise in an X window. * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gstvideotestsrc.h" #include "videotestsrc.h" #include #include #include GST_DEBUG_CATEGORY_STATIC (video_test_src_debug); #define GST_CAT_DEFAULT video_test_src_debug static const GstElementDetails video_test_src_details = GST_ELEMENT_DETAILS ("Video test source", "Source/Video", "Creates a test video stream", "David A. Schleef "); #define DEFAULT_PATTERN GST_VIDEO_TEST_SRC_SMPTE #define DEFAULT_TIMESTAMP_OFFSET 0 #define DEFAULT_IS_LIVE FALSE #define DEFAULT_PEER_ALLOC TRUE #define DEFAULT_COLOR_SPEC GST_VIDEO_TEST_SRC_BT601 enum { PROP_0, PROP_PATTERN, PROP_TIMESTAMP_OFFSET, PROP_IS_LIVE, PROP_PEER_ALLOC, PROP_COLOR_SPEC, PROP_K0, PROP_KX, PROP_KY, PROP_KT, PROP_KXT, PROP_KYT, PROP_KXY, PROP_KX2, PROP_KY2, PROP_KT2, PROP_XOFFSET, PROP_YOFFSET, PROP_LAST }; GST_BOILERPLATE (GstVideoTestSrc, gst_video_test_src, GstPushSrc, GST_TYPE_PUSH_SRC); static void gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc, int pattern_type); static void gst_video_test_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_video_test_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstCaps *gst_video_test_src_getcaps (GstBaseSrc * bsrc); static gboolean gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps); static void gst_video_test_src_src_fixate (GstPad * pad, GstCaps * caps); static gboolean gst_video_test_src_is_seekable (GstBaseSrc * psrc); static gboolean gst_video_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment); static gboolean gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query); static void gst_video_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer, GstClockTime * start, GstClockTime * end); static GstFlowReturn gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer); static gboolean gst_video_test_src_start (GstBaseSrc * basesrc); #define GST_TYPE_VIDEO_TEST_SRC_PATTERN (gst_video_test_src_pattern_get_type ()) static GType gst_video_test_src_pattern_get_type (void) { static GType video_test_src_pattern_type = 0; static const GEnumValue pattern_types[] = { {GST_VIDEO_TEST_SRC_SMPTE, "SMPTE 100% color bars", "smpte"}, {GST_VIDEO_TEST_SRC_SNOW, "Random (television snow)", "snow"}, {GST_VIDEO_TEST_SRC_BLACK, "100% Black", "black"}, {GST_VIDEO_TEST_SRC_WHITE, "100% White", "white"}, {GST_VIDEO_TEST_SRC_RED, "Red", "red"}, {GST_VIDEO_TEST_SRC_GREEN, "Green", "green"}, {GST_VIDEO_TEST_SRC_BLUE, "Blue", "blue"}, {GST_VIDEO_TEST_SRC_CHECKERS1, "Checkers 1px", "checkers-1"}, {GST_VIDEO_TEST_SRC_CHECKERS2, "Checkers 2px", "checkers-2"}, {GST_VIDEO_TEST_SRC_CHECKERS4, "Checkers 4px", "checkers-4"}, {GST_VIDEO_TEST_SRC_CHECKERS8, "Checkers 8px", "checkers-8"}, {GST_VIDEO_TEST_SRC_CIRCULAR, "Circular", "circular"}, {GST_VIDEO_TEST_SRC_BLINK, "Blink", "blink"}, {GST_VIDEO_TEST_SRC_SMPTE75, "SMPTE 75% color bars", "smpte75"}, {GST_VIDEO_TEST_SRC_ZONE_PLATE, "Zone plate", "zone-plate"}, {0, NULL, NULL} }; if (!video_test_src_pattern_type) { video_test_src_pattern_type = g_enum_register_static ("GstVideoTestSrcPattern", pattern_types); } return video_test_src_pattern_type; } #define GST_TYPE_VIDEO_TEST_SRC_COLOR_SPEC (gst_video_test_src_color_spec_get_type ()) static GType gst_video_test_src_color_spec_get_type (void) { static GType video_test_src_color_spec_type = 0; static const GEnumValue color_spec_types[] = { {GST_VIDEO_TEST_SRC_BT601, "ITU-R Rec. BT.601", "bt601"}, {GST_VIDEO_TEST_SRC_BT709, "ITU-R Rec. BT.709", "bt709"}, {0, NULL, NULL} }; if (!video_test_src_color_spec_type) { video_test_src_color_spec_type = g_enum_register_static ("GstVideoTestSrcColorSpec", color_spec_types); } return video_test_src_color_spec_type; } static void gst_video_test_src_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_details (element_class, &video_test_src_details); gst_element_class_add_pad_template (element_class, gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, gst_video_test_src_getcaps (NULL))); } static void gst_video_test_src_class_init (GstVideoTestSrcClass * klass) { GObjectClass *gobject_class; GstBaseSrcClass *gstbasesrc_class; GstPushSrcClass *gstpushsrc_class; gobject_class = (GObjectClass *) klass; gstbasesrc_class = (GstBaseSrcClass *) klass; gstpushsrc_class = (GstPushSrcClass *) klass; gobject_class->set_property = gst_video_test_src_set_property; gobject_class->get_property = gst_video_test_src_get_property; g_object_class_install_property (gobject_class, PROP_PATTERN, g_param_spec_enum ("pattern", "Pattern", "Type of test pattern to generate", GST_TYPE_VIDEO_TEST_SRC_PATTERN, DEFAULT_PATTERN, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TIMESTAMP_OFFSET, g_param_spec_int64 ("timestamp-offset", "Timestamp offset", "An offset added to timestamps set on buffers (in ns)", G_MININT64, G_MAXINT64, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_IS_LIVE, g_param_spec_boolean ("is-live", "Is Live", "Whether to act as a live source", DEFAULT_IS_LIVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_PEER_ALLOC, g_param_spec_boolean ("peer-alloc", "Peer Alloc", "Ask the peer to allocate an output buffer", DEFAULT_PEER_ALLOC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_COLOR_SPEC, g_param_spec_enum ("colorspec", "Color Specification", "Generate video in the given color specification", GST_TYPE_VIDEO_TEST_SRC_COLOR_SPEC, DEFAULT_COLOR_SPEC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_K0, g_param_spec_int ("k0", "Zoneplate zero order phase", "Zoneplate zero order phase, for generating plain fields or phase offsets", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KX, g_param_spec_int ("kx", "Zoneplate 1st order x phase", "Zoneplate 1st order x phase, for generating constant horizontal frequencies", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KY, g_param_spec_int ("ky", "Zoneplate 1st order y phase", "Zoneplate 1st order y phase, for generating contant vertical frequencies", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KT, g_param_spec_int ("kt", "Zoneplate 1st order t phase", "Zoneplate 1st order t phase, for generating phase rotation as a function of time", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KXT, g_param_spec_int ("kxt", "Zoneplate x*t product phase", "Zoneplate x*t product phase, normalised to kxy/256 cycles per vertical pixel at width/2 from origin", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KYT, g_param_spec_int ("kyt", "Zoneplate y*t product phase", "Zoneplate y*t product phase", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KXY, g_param_spec_int ("kxy", "Zoneplate x*y product phase", "Zoneplate x*t product phase", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KX2, g_param_spec_int ("kx2", "Zoneplate 2nd order x phase", "Zoneplate 2nd order x phase, normalised to kx2/256 cycles per horizontal pixel at width/2 from origin", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KY2, g_param_spec_int ("ky2", "Zoneplate 2nd order y phase", "Zoneplate 2nd order y phase, normailsed to ky2/256 cycles per vertical pixel at height/2 from origin", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_KT2, g_param_spec_int ("kt2", "Zoneplate 2nd order t phase", "Zoneplate 2nd order t phase, t*t/256 cycles per picture", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_XOFFSET, g_param_spec_int ("xoffset", "Zoneplate 2nd order products x offset", "Zoneplate 2nd order products x offset", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_YOFFSET, g_param_spec_int ("yoffset", "Zoneplate 2nd order products y offset", "Zoneplate 2nd order products y offset", G_MININT32, G_MAXINT32, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gstbasesrc_class->get_caps = gst_video_test_src_getcaps; gstbasesrc_class->set_caps = gst_video_test_src_setcaps; gstbasesrc_class->is_seekable = gst_video_test_src_is_seekable; gstbasesrc_class->do_seek = gst_video_test_src_do_seek; gstbasesrc_class->query = gst_video_test_src_query; gstbasesrc_class->get_times = gst_video_test_src_get_times; gstbasesrc_class->start = gst_video_test_src_start; gstpushsrc_class->create = gst_video_test_src_create; } static void gst_video_test_src_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class) { GstPad *pad = GST_BASE_SRC_PAD (src); gst_pad_set_fixatecaps_function (pad, gst_video_test_src_src_fixate); gst_video_test_src_set_pattern (src, DEFAULT_PATTERN); src->timestamp_offset = DEFAULT_TIMESTAMP_OFFSET; /* we operate in time */ gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME); gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE); src->peer_alloc = DEFAULT_PEER_ALLOC; } static void gst_video_test_src_src_fixate (GstPad * pad, GstCaps * caps) { GstStructure *structure; structure = gst_caps_get_structure (caps, 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); } static void gst_video_test_src_set_pattern (GstVideoTestSrc * videotestsrc, int pattern_type) { videotestsrc->pattern_type = pattern_type; GST_DEBUG_OBJECT (videotestsrc, "setting pattern to %d", pattern_type); switch (pattern_type) { case GST_VIDEO_TEST_SRC_SMPTE: videotestsrc->make_image = gst_video_test_src_smpte; break; case GST_VIDEO_TEST_SRC_SNOW: videotestsrc->make_image = gst_video_test_src_snow; break; case GST_VIDEO_TEST_SRC_BLACK: videotestsrc->make_image = gst_video_test_src_black; break; case GST_VIDEO_TEST_SRC_WHITE: videotestsrc->make_image = gst_video_test_src_white; break; case GST_VIDEO_TEST_SRC_RED: videotestsrc->make_image = gst_video_test_src_red; break; case GST_VIDEO_TEST_SRC_GREEN: videotestsrc->make_image = gst_video_test_src_green; break; case GST_VIDEO_TEST_SRC_BLUE: videotestsrc->make_image = gst_video_test_src_blue; break; case GST_VIDEO_TEST_SRC_CHECKERS1: videotestsrc->make_image = gst_video_test_src_checkers1; break; case GST_VIDEO_TEST_SRC_CHECKERS2: videotestsrc->make_image = gst_video_test_src_checkers2; break; case GST_VIDEO_TEST_SRC_CHECKERS4: videotestsrc->make_image = gst_video_test_src_checkers4; break; case GST_VIDEO_TEST_SRC_CHECKERS8: videotestsrc->make_image = gst_video_test_src_checkers8; break; case GST_VIDEO_TEST_SRC_CIRCULAR: videotestsrc->make_image = gst_video_test_src_circular; break; case GST_VIDEO_TEST_SRC_BLINK: videotestsrc->make_image = gst_video_test_src_black; break; case GST_VIDEO_TEST_SRC_SMPTE75: videotestsrc->make_image = gst_video_test_src_smpte75; break; case GST_VIDEO_TEST_SRC_ZONE_PLATE: videotestsrc->make_image = gst_video_test_src_zoneplate; break; default: g_assert_not_reached (); } } static void gst_video_test_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (object); switch (prop_id) { case PROP_PATTERN: gst_video_test_src_set_pattern (src, g_value_get_enum (value)); break; case PROP_TIMESTAMP_OFFSET: src->timestamp_offset = g_value_get_int64 (value); break; case PROP_IS_LIVE: gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value)); break; case PROP_PEER_ALLOC: src->peer_alloc = g_value_get_boolean (value); break; case PROP_COLOR_SPEC: src->color_spec = g_value_get_enum (value); break; case PROP_K0: src->k0 = g_value_get_int (value); break; case PROP_KX: src->kx = g_value_get_int (value); break; case PROP_KY: src->ky = g_value_get_int (value); break; case PROP_KT: src->kt = g_value_get_int (value); break; case PROP_KXT: src->kxt = g_value_get_int (value); break; case PROP_KYT: src->kyt = g_value_get_int (value); break; case PROP_KXY: src->kxy = g_value_get_int (value); break; case PROP_KX2: src->kx2 = g_value_get_int (value); break; case PROP_KY2: src->ky2 = g_value_get_int (value); break; case PROP_KT2: src->kt2 = g_value_get_int (value); break; case PROP_XOFFSET: src->xoffset = g_value_get_int (value); break; case PROP_YOFFSET: src->yoffset = g_value_get_int (value); break; default: break; } } static void gst_video_test_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (object); switch (prop_id) { case PROP_PATTERN: g_value_set_enum (value, src->pattern_type); break; case PROP_TIMESTAMP_OFFSET: g_value_set_int64 (value, src->timestamp_offset); break; case PROP_IS_LIVE: g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src))); break; case PROP_PEER_ALLOC: g_value_set_boolean (value, src->peer_alloc); break; case PROP_COLOR_SPEC: g_value_set_enum (value, src->color_spec); break; case PROP_K0: g_value_set_int (value, src->k0); break; case PROP_KX: g_value_set_int (value, src->kx); break; case PROP_KY: g_value_set_int (value, src->ky); break; case PROP_KT: g_value_set_int (value, src->kt); break; case PROP_KXT: g_value_set_int (value, src->kxt); break; case PROP_KYT: g_value_set_int (value, src->kyt); break; case PROP_KXY: g_value_set_int (value, src->kxy); break; case PROP_KX2: g_value_set_int (value, src->kx2); break; case PROP_KY2: g_value_set_int (value, src->ky2); break; case PROP_KT2: g_value_set_int (value, src->kt2); break; case PROP_XOFFSET: g_value_set_int (value, src->xoffset); break; case PROP_YOFFSET: g_value_set_int (value, src->yoffset); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* threadsafe because this gets called as the plugin is loaded */ static GstCaps * gst_video_test_src_getcaps (GstBaseSrc * bsrc) { static GstCaps *capslist = NULL; GstVideoTestSrc *videotestsrc; videotestsrc = GST_VIDEO_TEST_SRC (bsrc); if (!capslist) { GstCaps *caps; GstStructure *structure; int i; caps = gst_caps_new_empty (); for (i = 0; i < n_fourccs; i++) { structure = paint_get_structure (fourcc_list + i); gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); gst_caps_append_structure (caps, structure); } capslist = caps; } return gst_caps_copy (capslist); } static gboolean gst_video_test_src_parse_caps (const GstCaps * caps, gint * width, gint * height, gint * rate_numerator, gint * rate_denominator, struct fourcc_list_struct **fourcc) { const GstStructure *structure; GstPadLinkReturn ret; const GValue *framerate; GST_DEBUG ("parsing caps"); if (gst_caps_get_size (caps) < 1) return FALSE; structure = gst_caps_get_structure (caps, 0); if (!(*fourcc = paintinfo_find_by_structure (structure))) goto unknown_format; ret = gst_structure_get_int (structure, "width", width); ret &= gst_structure_get_int (structure, "height", height); framerate = gst_structure_get_value (structure, "framerate"); if (framerate) { *rate_numerator = gst_value_get_fraction_numerator (framerate); *rate_denominator = gst_value_get_fraction_denominator (framerate); } else goto no_framerate; return ret; /* ERRORS */ unknown_format: { GST_DEBUG ("videotestsrc format not found"); return FALSE; } no_framerate: { GST_DEBUG ("videotestsrc no framerate given"); return FALSE; } } static gboolean gst_video_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps) { gboolean res; gint width, height, rate_denominator, rate_numerator; struct fourcc_list_struct *fourcc; GstVideoTestSrc *videotestsrc; videotestsrc = GST_VIDEO_TEST_SRC (bsrc); res = gst_video_test_src_parse_caps (caps, &width, &height, &rate_numerator, &rate_denominator, &fourcc); if (res) { /* looks ok here */ videotestsrc->fourcc = fourcc; videotestsrc->width = width; videotestsrc->height = height; videotestsrc->rate_numerator = rate_numerator; videotestsrc->rate_denominator = rate_denominator; videotestsrc->bpp = videotestsrc->fourcc->bitspp; GST_DEBUG_OBJECT (videotestsrc, "size %dx%d, %d/%d fps", videotestsrc->width, videotestsrc->height, videotestsrc->rate_numerator, videotestsrc->rate_denominator); } return res; } static gboolean gst_video_test_src_query (GstBaseSrc * bsrc, GstQuery * query) { gboolean res; GstVideoTestSrc *src; src = GST_VIDEO_TEST_SRC (bsrc); switch (GST_QUERY_TYPE (query)) { case GST_QUERY_CONVERT: { GstFormat src_fmt, dest_fmt; gint64 src_val, dest_val; gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); if (src_fmt == dest_fmt) { dest_val = src_val; goto done; } switch (src_fmt) { case GST_FORMAT_DEFAULT: switch (dest_fmt) { case GST_FORMAT_TIME: /* frames to time */ if (src->rate_numerator) { dest_val = gst_util_uint64_scale (src_val, src->rate_denominator * GST_SECOND, src->rate_numerator); } else { dest_val = 0; } break; default: goto error; } break; case GST_FORMAT_TIME: switch (dest_fmt) { case GST_FORMAT_DEFAULT: /* time to frames */ if (src->rate_numerator) { dest_val = gst_util_uint64_scale (src_val, src->rate_numerator, src->rate_denominator * GST_SECOND); } else { dest_val = 0; } break; default: goto error; } break; default: goto error; } done: gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); res = TRUE; break; } default: res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query); } return res; /* ERROR */ error: { GST_DEBUG_OBJECT (src, "query failed"); return FALSE; } } static void gst_video_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer, GstClockTime * start, GstClockTime * end) { /* for live sources, sync on the timestamp of the buffer */ if (gst_base_src_is_live (basesrc)) { GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer); if (GST_CLOCK_TIME_IS_VALID (timestamp)) { /* get duration to calculate end time */ GstClockTime duration = GST_BUFFER_DURATION (buffer); if (GST_CLOCK_TIME_IS_VALID (duration)) { *end = timestamp + duration; } *start = timestamp; } } else { *start = -1; *end = -1; } } static gboolean gst_video_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment) { GstClockTime time; GstVideoTestSrc *src; src = GST_VIDEO_TEST_SRC (bsrc); segment->time = segment->start; time = segment->last_stop; /* now move to the time indicated */ if (src->rate_numerator) { src->n_frames = gst_util_uint64_scale (time, src->rate_numerator, src->rate_denominator * GST_SECOND); } else { src->n_frames = 0; } if (src->rate_numerator) { src->running_time = gst_util_uint64_scale (src->n_frames, src->rate_denominator * GST_SECOND, src->rate_numerator); } else { /* FIXME : Not sure what to set here */ src->running_time = 0; } g_assert (src->running_time <= time); return TRUE; } static gboolean gst_video_test_src_is_seekable (GstBaseSrc * psrc) { /* we're seekable... */ return TRUE; } static GstFlowReturn gst_video_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer) { GstVideoTestSrc *src; gulong newsize, size; GstBuffer *outbuf = NULL; GstFlowReturn res; GstClockTime next_time; src = GST_VIDEO_TEST_SRC (psrc); if (G_UNLIKELY (src->fourcc == NULL)) goto not_negotiated; /* 0 framerate and we are at the second frame, eos */ if (G_UNLIKELY (src->rate_numerator == 0 && src->n_frames == 1)) goto eos; newsize = gst_video_test_src_get_size (src, src->width, src->height); g_return_val_if_fail (newsize > 0, GST_FLOW_ERROR); GST_LOG_OBJECT (src, "creating buffer of %lu bytes with %dx%d image for frame %d", newsize, src->width, src->height, (gint) src->n_frames); if (src->peer_alloc) { res = gst_pad_alloc_buffer_and_set_caps (GST_BASE_SRC_PAD (psrc), GST_BUFFER_OFFSET_NONE, newsize, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)), &outbuf); if (res != GST_FLOW_OK) goto no_buffer; /* the buffer could have renegotiated, we need to discard any buffers of the * wrong size. */ size = GST_BUFFER_SIZE (outbuf); newsize = gst_video_test_src_get_size (src, src->width, src->height); if (size != newsize) { gst_buffer_unref (outbuf); outbuf = NULL; } } if (outbuf == NULL) { outbuf = gst_buffer_new_and_alloc (newsize); gst_buffer_set_caps (outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc))); } if (src->pattern_type == GST_VIDEO_TEST_SRC_BLINK) { if (src->n_frames & 0x1) { gst_video_test_src_white (src, (void *) GST_BUFFER_DATA (outbuf), src->width, src->height); } else { gst_video_test_src_black (src, (void *) GST_BUFFER_DATA (outbuf), src->width, src->height); } } else { src->make_image (src, (void *) GST_BUFFER_DATA (outbuf), src->width, src->height); } GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time; GST_BUFFER_OFFSET (outbuf) = src->n_frames; src->n_frames++; GST_BUFFER_OFFSET_END (outbuf) = src->n_frames; if (src->rate_numerator) { next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND, src->rate_denominator, src->rate_numerator); GST_BUFFER_DURATION (outbuf) = next_time - src->running_time; } else { next_time = src->timestamp_offset; /* NONE means forever */ GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE; } src->running_time = next_time; *buffer = outbuf; return GST_FLOW_OK; not_negotiated: { GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL), ("format wasn't negotiated before get function")); return GST_FLOW_NOT_NEGOTIATED; } eos: { GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames); return GST_FLOW_UNEXPECTED; } no_buffer: { GST_DEBUG_OBJECT (src, "could not allocate buffer, reason %s", gst_flow_get_name (res)); return res; } } static gboolean gst_video_test_src_start (GstBaseSrc * basesrc) { GstVideoTestSrc *src = GST_VIDEO_TEST_SRC (basesrc); src->running_time = 0; src->n_frames = 0; return TRUE; } static gboolean plugin_init (GstPlugin * plugin) { oil_init (); GST_DEBUG_CATEGORY_INIT (video_test_src_debug, "videotestsrc", 0, "Video Test Source"); return gst_element_register (plugin, "videotestsrc", GST_RANK_NONE, GST_TYPE_VIDEO_TEST_SRC); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "videotestsrc", "Creates a test video stream", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)