/* GStreamer libswscale wrapper * Copyright (C) 2005 Luca Ognibene * Copyright (C) 2006 Martin Zlomek * Copyright (C) 2008 Mark Nauwelaerts * * 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 #ifdef HAVE_FFMPEG_UNINSTALLED #include #else #include #endif #include #include #include #ifdef HAVE_ORC #include #endif #include typedef struct _GstFFMpegScale { GstBaseTransform element; /* pads */ GstPad *sinkpad, *srcpad; /* state */ gint in_width, in_height; gint out_width, out_height; enum PixelFormat in_pixfmt, out_pixfmt; struct SwsContext *ctx; /* cached auxiliary data */ gint in_stride[3], in_offset[3]; gint out_stride[3], out_offset[3]; /* property */ gint method; } GstFFMpegScale; typedef struct _GstFFMpegScaleClass { GstBaseTransformClass parent_class; } GstFFMpegScaleClass; #define GST_TYPE_FFMPEGSCALE \ (gst_ffmpegscale_get_type()) #define GST_FFMPEGSCALE(obj) \ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGSCALE,GstFFMpegScale)) #define GST_FFMPEGSCALE_CLASS(klass) \ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGSCALE,GstFFMpegScaleClass)) #define GST_IS_FFMPEGSCALE(obj) \ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGSCALE)) #define GST_IS_FFMPEGSCALE_CLASS(klass) \ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGSCALE)) GType gst_ffmpegscale_get_type (void); GST_DEBUG_CATEGORY (ffmpegscale_debug); #define GST_CAT_DEFAULT ffmpegscale_debug /* libswscale supported formats depend on endianness */ #if G_BYTE_ORDER == G_BIG_ENDIAN #define VIDEO_CAPS \ GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; " \ GST_VIDEO_CAPS_xRGB "; " GST_VIDEO_CAPS_xBGR "; " \ GST_VIDEO_CAPS_ARGB "; " GST_VIDEO_CAPS_ABGR "; " \ GST_VIDEO_CAPS_YUV ("{ I420, YUY2, UYVY, Y41B, Y42B }") #else #define VIDEO_CAPS \ GST_VIDEO_CAPS_RGB "; " GST_VIDEO_CAPS_BGR "; " \ GST_VIDEO_CAPS_RGBx "; " GST_VIDEO_CAPS_BGRx "; " \ GST_VIDEO_CAPS_RGBA "; " GST_VIDEO_CAPS_BGRA "; " \ GST_VIDEO_CAPS_YUV ("{ I420, YUY2, UYVY, Y41B, Y42B }") #endif static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (VIDEO_CAPS) ); static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (VIDEO_CAPS) ); static gint gst_ffmpegscale_method_flags[] = { SWS_FAST_BILINEAR, SWS_BILINEAR, SWS_BICUBIC, SWS_X, SWS_POINT, SWS_AREA, SWS_BICUBLIN, SWS_GAUSS, SWS_SINC, SWS_LANCZOS, SWS_SPLINE, }; #define GST_TYPE_FFMPEGSCALE_METHOD (gst_ffmpegscale_method_get_type()) static GType gst_ffmpegscale_method_get_type (void) { static GType ffmpegscale_method_type = 0; static const GEnumValue ffmpegscale_methods[] = { {0, "Fast Bilinear", "fast-bilinear"}, {1, "Bilinear", "bilinear"}, {2, "Bicubic", "bicubic"}, {3, "Experimental", "experimental"}, {4, "Nearest Neighbour", "nearest-neighbour"}, {5, "Area", "area"}, {6, "Luma Bicubic / Chroma Linear", "bicubic-lin"}, {7, "Gauss", "gauss"}, {8, "SincR", "sincr"}, {9, "Lanczos", "lanczos"}, {10, "Natural Bicubic Spline", "bicubic-spline"}, {0, NULL, NULL}, }; if (!ffmpegscale_method_type) { ffmpegscale_method_type = g_enum_register_static ("GstFFMpegVideoScaleMethod", ffmpegscale_methods); } return ffmpegscale_method_type; } #define DEFAULT_PROP_METHOD 2 enum { PROP_0, PROP_METHOD /* FILL ME */ }; GST_BOILERPLATE (GstFFMpegScale, gst_ffmpegscale, GstBaseTransform, GST_TYPE_BASE_TRANSFORM); static void gst_ffmpegscale_finalize (GObject * object); static void gst_ffmpegscale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_ffmpegscale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static gboolean gst_ffmpegscale_stop (GstBaseTransform * trans); static GstCaps *gst_ffmpegscale_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps); static void gst_ffmpegscale_fixate_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps); static gboolean gst_ffmpegscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps, guint * size); static gboolean gst_ffmpegscale_set_caps (GstBaseTransform * trans, GstCaps * incaps, GstCaps * outcaps); static GstFlowReturn gst_ffmpegscale_transform (GstBaseTransform * trans, GstBuffer * inbuf, GstBuffer * outbuf); static gboolean gst_ffmpegscale_handle_src_event (GstPad * pad, GstEvent * event); static void gst_ffmpegscale_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 (&src_factory)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_factory)); gst_element_class_set_details_simple (element_class, "FFMPEG Scale element", "Filter/Converter/Video", "Converts video from one resolution to another", "Luca Ognibene , Mark Nauwelaerts "); } static void gst_ffmpegscale_class_init (GstFFMpegScaleClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass); gobject_class->finalize = gst_ffmpegscale_finalize; gobject_class->set_property = gst_ffmpegscale_set_property; gobject_class->get_property = gst_ffmpegscale_get_property; g_object_class_install_property (gobject_class, PROP_METHOD, g_param_spec_enum ("method", "method", "method", GST_TYPE_FFMPEGSCALE_METHOD, DEFAULT_PROP_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); trans_class->stop = GST_DEBUG_FUNCPTR (gst_ffmpegscale_stop); trans_class->transform_caps = GST_DEBUG_FUNCPTR (gst_ffmpegscale_transform_caps); trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_ffmpegscale_fixate_caps); trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_ffmpegscale_get_unit_size); trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_ffmpegscale_set_caps); trans_class->transform = GST_DEBUG_FUNCPTR (gst_ffmpegscale_transform); trans_class->passthrough_on_same_caps = TRUE; } static void gst_ffmpegscale_init (GstFFMpegScale * scale, GstFFMpegScaleClass * klass) { GstBaseTransform *trans = GST_BASE_TRANSFORM (scale); gst_pad_set_event_function (trans->srcpad, gst_ffmpegscale_handle_src_event); scale->method = DEFAULT_PROP_METHOD; scale->ctx = NULL; scale->in_pixfmt = PIX_FMT_NONE; scale->out_pixfmt = PIX_FMT_NONE; } static void gst_ffmpegscale_reset (GstFFMpegScale * scale) { if (scale->ctx != NULL) { sws_freeContext (scale->ctx); scale->ctx = NULL; } scale->in_pixfmt = PIX_FMT_NONE; scale->out_pixfmt = PIX_FMT_NONE; } static void gst_ffmpegscale_finalize (GObject * object) { GstFFMpegScale *scale = GST_FFMPEGSCALE (object); gst_ffmpegscale_reset (scale); G_OBJECT_CLASS (parent_class)->finalize (object); } /* copies the given caps */ static GstCaps * gst_ffmpegscale_caps_remove_format_info (GstCaps * caps) { int i; GstStructure *structure; GstCaps *rgbcaps; GstCaps *graycaps; caps = gst_caps_copy (caps); for (i = 0; i < gst_caps_get_size (caps); i++) { structure = gst_caps_get_structure (caps, i); gst_structure_set_name (structure, "video/x-raw-yuv"); gst_structure_remove_field (structure, "format"); gst_structure_remove_field (structure, "endianness"); gst_structure_remove_field (structure, "depth"); gst_structure_remove_field (structure, "bpp"); gst_structure_remove_field (structure, "red_mask"); gst_structure_remove_field (structure, "green_mask"); gst_structure_remove_field (structure, "blue_mask"); gst_structure_remove_field (structure, "alpha_mask"); gst_structure_remove_field (structure, "palette_data"); } rgbcaps = gst_caps_copy (caps); for (i = 0; i < gst_caps_get_size (rgbcaps); i++) { structure = gst_caps_get_structure (rgbcaps, i); gst_structure_set_name (structure, "video/x-raw-rgb"); } graycaps = gst_caps_copy (caps); for (i = 0; i < gst_caps_get_size (graycaps); i++) { structure = gst_caps_get_structure (graycaps, i); gst_structure_set_name (structure, "video/x-raw-gray"); } gst_caps_append (caps, graycaps); gst_caps_append (caps, rgbcaps); return caps; } static GstCaps * gst_ffmpegscale_transform_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps) { GstFFMpegScale *scale; GstCaps *ret; GstStructure *structure; const GValue *par; /* this function is always called with a simple caps */ g_return_val_if_fail (GST_CAPS_IS_SIMPLE (caps), NULL); scale = GST_FFMPEGSCALE (trans); structure = gst_caps_get_structure (caps, 0); ret = gst_caps_copy (caps); structure = gst_structure_copy (gst_caps_get_structure (ret, 0)); gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL); gst_caps_merge_structure (ret, gst_structure_copy (structure)); /* if pixel aspect ratio, make a range of it */ if ((par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) { gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL); gst_caps_merge_structure (ret, structure); } else { gst_structure_free (structure); } /* now also unfix colour space format */ gst_caps_append (ret, gst_ffmpegscale_caps_remove_format_info (ret)); GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret); return ret; } static void gst_ffmpegscale_fixate_caps (GstBaseTransform * trans, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) { GstStructure *ins, *outs; const GValue *from_par, *to_par; g_return_if_fail (gst_caps_is_fixed (caps)); GST_DEBUG_OBJECT (trans, "trying to fixate othercaps %" GST_PTR_FORMAT " based on caps %" GST_PTR_FORMAT, othercaps, caps); ins = gst_caps_get_structure (caps, 0); outs = gst_caps_get_structure (othercaps, 0); from_par = gst_structure_get_value (ins, "pixel-aspect-ratio"); to_par = gst_structure_get_value (outs, "pixel-aspect-ratio"); /* we have both PAR but they might not be fixated */ if (from_par && to_par) { gint from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d; gint count = 0, w = 0, h = 0; guint num, den; /* from_par should be fixed */ g_return_if_fail (gst_value_is_fixed (from_par)); from_par_n = gst_value_get_fraction_numerator (from_par); from_par_d = gst_value_get_fraction_denominator (from_par); /* fixate the out PAR */ if (!gst_value_is_fixed (to_par)) { GST_DEBUG_OBJECT (trans, "fixating to_par to %dx%d", from_par_n, from_par_d); gst_structure_fixate_field_nearest_fraction (outs, "pixel-aspect-ratio", from_par_n, from_par_d); } to_par_n = gst_value_get_fraction_numerator (to_par); to_par_d = gst_value_get_fraction_denominator (to_par); /* if both width and height are already fixed, we can't do anything * about it anymore */ if (gst_structure_get_int (outs, "width", &w)) ++count; if (gst_structure_get_int (outs, "height", &h)) ++count; if (count == 2) { GST_DEBUG_OBJECT (trans, "dimensions already set to %dx%d, not fixating", w, h); return; } gst_structure_get_int (ins, "width", &from_w); gst_structure_get_int (ins, "height", &from_h); if (!gst_video_calculate_display_ratio (&num, &den, from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d)) { GST_ELEMENT_ERROR (trans, CORE, NEGOTIATION, (NULL), ("Error calculating the output scaled size - integer overflow")); return; } GST_DEBUG_OBJECT (trans, "scaling input with %dx%d and PAR %d/%d to output PAR %d/%d", from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d); GST_DEBUG_OBJECT (trans, "resulting output should respect ratio of %d/%d", num, den); /* now find a width x height that respects this display ratio. * prefer those that have one of w/h the same as the incoming video * using wd / hd = num / den */ /* if one of the output width or height is fixed, we work from there */ if (h) { GST_DEBUG_OBJECT (trans, "height is fixed,scaling width"); w = (guint) gst_util_uint64_scale_int (h, num, den); } else if (w) { GST_DEBUG_OBJECT (trans, "width is fixed, scaling height"); h = (guint) gst_util_uint64_scale_int (w, den, num); } else { /* none of width or height is fixed, figure out both of them based only on * the input width and height */ /* check hd / den is an integer scale factor, and scale wd with the PAR */ if (from_h % den == 0) { GST_DEBUG_OBJECT (trans, "keeping video height"); h = from_h; w = (guint) gst_util_uint64_scale_int (h, num, den); } else if (from_w % num == 0) { GST_DEBUG_OBJECT (trans, "keeping video width"); w = from_w; h = (guint) gst_util_uint64_scale_int (w, den, num); } else { GST_DEBUG_OBJECT (trans, "approximating but keeping video height"); h = from_h; w = (guint) gst_util_uint64_scale_int (h, num, den); } } GST_DEBUG_OBJECT (trans, "scaling to %dx%d", w, h); /* now fixate */ gst_structure_fixate_field_nearest_int (outs, "width", w); gst_structure_fixate_field_nearest_int (outs, "height", h); } else { gint width, height; if (gst_structure_get_int (ins, "width", &width)) { if (gst_structure_has_field (outs, "width")) { gst_structure_fixate_field_nearest_int (outs, "width", width); } } if (gst_structure_get_int (ins, "height", &height)) { if (gst_structure_has_field (outs, "height")) { gst_structure_fixate_field_nearest_int (outs, "height", height); } } } GST_DEBUG_OBJECT (trans, "fixated othercaps to %" GST_PTR_FORMAT, othercaps); } static gboolean gst_ffmpegscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps, guint * size) { gint width, height; GstVideoFormat format; if (!gst_video_format_parse_caps (caps, &format, &width, &height)) return FALSE; *size = gst_video_format_get_size (format, width, height); GST_DEBUG_OBJECT (trans, "unit size = %d for format %d w %d height %d", *size, format, width, height); return TRUE; } /* Convert a GstCaps (video/raw) to a FFMPEG PixFmt */ static enum PixelFormat gst_ffmpeg_caps_to_pixfmt (const GstCaps * caps) { GstStructure *structure; enum PixelFormat pix_fmt = PIX_FMT_NONE; GST_DEBUG ("converting caps %" GST_PTR_FORMAT, caps); g_return_val_if_fail (gst_caps_get_size (caps) == 1, PIX_FMT_NONE); structure = gst_caps_get_structure (caps, 0); if (strcmp (gst_structure_get_name (structure), "video/x-raw-yuv") == 0) { guint32 fourcc; if (gst_structure_get_fourcc (structure, "format", &fourcc)) { switch (fourcc) { case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'): pix_fmt = PIX_FMT_YUYV422; break; case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'): pix_fmt = PIX_FMT_UYVY422; break; case GST_MAKE_FOURCC ('I', '4', '2', '0'): pix_fmt = PIX_FMT_YUV420P; break; case GST_MAKE_FOURCC ('Y', '4', '1', 'B'): pix_fmt = PIX_FMT_YUV411P; break; case GST_MAKE_FOURCC ('Y', '4', '2', 'B'): pix_fmt = PIX_FMT_YUV422P; break; case GST_MAKE_FOURCC ('Y', 'U', 'V', '9'): pix_fmt = PIX_FMT_YUV410P; break; } } } else if (strcmp (gst_structure_get_name (structure), "video/x-raw-rgb") == 0) { gint bpp = 0, rmask = 0, endianness = 0; if (gst_structure_get_int (structure, "bpp", &bpp) && gst_structure_get_int (structure, "endianness", &endianness) && endianness == G_BIG_ENDIAN) { if (gst_structure_get_int (structure, "red_mask", &rmask)) { switch (bpp) { case 32: if (rmask == 0x00ff0000) pix_fmt = PIX_FMT_ARGB; else if (rmask == 0xff000000) pix_fmt = PIX_FMT_RGBA; else if (rmask == 0xff00) pix_fmt = PIX_FMT_BGRA; else if (rmask == 0xff) pix_fmt = PIX_FMT_ABGR; break; case 24: if (rmask == 0x0000FF) pix_fmt = PIX_FMT_BGR24; else pix_fmt = PIX_FMT_RGB24; break; case 16: if (endianness == G_BYTE_ORDER) pix_fmt = PIX_FMT_RGB565; break; case 15: if (endianness == G_BYTE_ORDER) pix_fmt = PIX_FMT_RGB555; break; default: /* nothing */ break; } } else { if (bpp == 8) { pix_fmt = PIX_FMT_PAL8; } } } } return pix_fmt; } static void gst_ffmpegscale_fill_info (GstFFMpegScale * scale, GstVideoFormat format, guint width, guint height, gint stride[], gint offset[]) { gint i; for (i = 0; i < 3; i++) { stride[i] = gst_video_format_get_row_stride (format, i, width); offset[i] = gst_video_format_get_component_offset (format, i, width, height); /* stay close to the ffmpeg offset way */ if (offset[i] < 3) offset[i] = 0; GST_DEBUG_OBJECT (scale, "format %d, component %d; stride %d, offset %d", format, i, stride[i], offset[i]); } } static gboolean gst_ffmpegscale_set_caps (GstBaseTransform * trans, GstCaps * incaps, GstCaps * outcaps) { GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); guint mmx_flags, altivec_flags; gint swsflags; GstVideoFormat in_format, out_format; gboolean ok; g_return_val_if_fail (scale->method < G_N_ELEMENTS (gst_ffmpegscale_method_flags), FALSE); if (scale->ctx) { sws_freeContext (scale->ctx); scale->ctx = NULL; } ok = gst_video_format_parse_caps (incaps, &in_format, &scale->in_width, &scale->in_height); ok &= gst_video_format_parse_caps (outcaps, &out_format, &scale->out_width, &scale->out_height); scale->in_pixfmt = gst_ffmpeg_caps_to_pixfmt (incaps); scale->out_pixfmt = gst_ffmpeg_caps_to_pixfmt (outcaps); if (!ok || scale->in_pixfmt == PIX_FMT_NONE || scale->out_pixfmt == PIX_FMT_NONE || in_format == GST_VIDEO_FORMAT_UNKNOWN || out_format == GST_VIDEO_FORMAT_UNKNOWN) goto refuse_caps; GST_DEBUG_OBJECT (scale, "format %d => %d, from=%dx%d -> to=%dx%d", in_format, out_format, scale->in_width, scale->in_height, scale->out_width, scale->out_height); gst_ffmpegscale_fill_info (scale, in_format, scale->in_width, scale->in_height, scale->in_stride, scale->in_offset); gst_ffmpegscale_fill_info (scale, out_format, scale->out_width, scale->out_height, scale->out_stride, scale->out_offset); #ifdef HAVE_ORC mmx_flags = orc_target_get_default_flags (orc_target_get_by_name ("mmx")); altivec_flags = orc_target_get_default_flags (orc_target_get_by_name ("altivec")); swsflags = (mmx_flags & ORC_TARGET_MMX_MMX ? SWS_CPU_CAPS_MMX : 0) | (mmx_flags & ORC_TARGET_MMX_MMXEXT ? SWS_CPU_CAPS_MMX2 : 0) | (mmx_flags & ORC_TARGET_MMX_3DNOW ? SWS_CPU_CAPS_3DNOW : 0) | (altivec_flags & ORC_TARGET_ALTIVEC_ALTIVEC ? SWS_CPU_CAPS_ALTIVEC : 0); #else mmx_flags = 0; altivec_flags = 0; swsflags = 0; #endif scale->ctx = sws_getContext (scale->in_width, scale->in_height, scale->in_pixfmt, scale->out_width, scale->out_height, scale->out_pixfmt, swsflags | gst_ffmpegscale_method_flags[scale->method], NULL, NULL, NULL); if (!scale->ctx) goto setup_failed; return TRUE; /* ERRORS */ setup_failed: { GST_ELEMENT_ERROR (trans, LIBRARY, INIT, (NULL), (NULL)); return FALSE; } refuse_caps: { GST_DEBUG_OBJECT (trans, "refused caps %" GST_PTR_FORMAT, incaps); return FALSE; } } static GstFlowReturn gst_ffmpegscale_transform (GstBaseTransform * trans, GstBuffer * inbuf, GstBuffer * outbuf) { GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); guint8 *in_data[3] = { NULL, NULL, NULL }; guint8 *out_data[3] = { NULL, NULL, NULL }; gint i; for (i = 0; i < 3; i++) { /* again; stay close to the ffmpeg offset way */ if (!i || scale->in_offset[i]) in_data[i] = GST_BUFFER_DATA (inbuf) + scale->in_offset[i]; if (!i || scale->out_offset[i]) out_data[i] = GST_BUFFER_DATA (outbuf) + scale->out_offset[i]; } sws_scale (scale->ctx, (const guint8 **) in_data, scale->in_stride, 0, scale->in_height, out_data, scale->out_stride); return GST_FLOW_OK; } static gboolean gst_ffmpegscale_handle_src_event (GstPad * pad, GstEvent * event) { GstFFMpegScale *scale; GstStructure *structure; gdouble pointer; gboolean res; scale = GST_FFMPEGSCALE (gst_pad_get_parent (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NAVIGATION: event = GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event))); structure = (GstStructure *) gst_event_get_structure (event); if (gst_structure_get_double (structure, "pointer_x", &pointer)) { gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, pointer * scale->in_width / scale->out_width, NULL); } if (gst_structure_get_double (structure, "pointer_y", &pointer)) { gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, pointer * scale->in_height / scale->out_height, NULL); } break; default: break; } res = gst_pad_event_default (pad, event); gst_object_unref (scale); return res; } static gboolean gst_ffmpegscale_stop (GstBaseTransform * trans) { GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); gst_ffmpegscale_reset (scale); return TRUE; } static void gst_ffmpegscale_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstFFMpegScale *scale = GST_FFMPEGSCALE (object); switch (prop_id) { case PROP_METHOD: scale->method = g_value_get_enum (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_ffmpegscale_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstFFMpegScale *scale = GST_FFMPEGSCALE (object); switch (prop_id) { case PROP_METHOD: g_value_set_enum (value, scale->method); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } #ifndef GST_DISABLE_GST_DEBUG static void gst_ffmpeg_log_callback (void *ptr, int level, const char *fmt, va_list vl) { GstDebugLevel gst_level; switch (level) { case AV_LOG_QUIET: gst_level = GST_LEVEL_NONE; break; case AV_LOG_ERROR: gst_level = GST_LEVEL_ERROR; break; case AV_LOG_INFO: gst_level = GST_LEVEL_INFO; break; case AV_LOG_DEBUG: gst_level = GST_LEVEL_DEBUG; break; default: gst_level = GST_LEVEL_INFO; break; } gst_debug_log_valist (ffmpegscale_debug, gst_level, "", "", 0, NULL, fmt, vl); } #endif static gboolean plugin_init (GstPlugin * plugin) { GST_DEBUG_CATEGORY_INIT (ffmpegscale_debug, "ffvideoscale", 0, "video scaling element"); #ifdef HAVE_ORC orc_init (); #endif #ifndef GST_DISABLE_GST_DEBUG av_log_set_callback (gst_ffmpeg_log_callback); #endif return gst_element_register (plugin, "ffvideoscale", GST_RANK_NONE, GST_TYPE_FFMPEGSCALE); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "ffvideoscale", "videoscaling element (" FFMPEG_SOURCE ")", plugin_init, PACKAGE_VERSION, "GPL", "FFMpeg", "http://ffmpeg.sourceforge.net/")