From 1b5a9e3fcad33c4c6152a50900b8307e94689b2c Mon Sep 17 00:00:00 2001 From: Edward Hervey Date: Wed, 1 Mar 2006 15:08:08 +0000 Subject: [PATCH] ext/ffmpeg/: Port of ffvideoscale to 0.10. Original commit message from CVS: Reviewed by : Edward Hervey * ext/ffmpeg/Makefile.am: * ext/ffmpeg/gstffmpeg.c: (plugin_init): * ext/ffmpeg/gstffmpegscale.c: (gst_ffmpegscale_base_init), (gst_ffmpegscale_class_init), (gst_ffmpegscale_init), (gst_ffmpegscale_finalize), (gst_ffmpegscale_transform_caps), (gst_ffmpegscale_fixate_caps), (gst_ffmpegscale_get_unit_size), (gst_ffmpegscale_set_caps), (gst_ffmpegscale_transform), (gst_ffmpegscale_handle_src_event), (gst_ffmpegscale_register): Port of ffvideoscale to 0.10. Closes #332557 --- ChangeLog | 15 + ext/ffmpeg/Makefile.am | 14 +- ext/ffmpeg/gstffmpeg.c | 4 +- ext/ffmpeg/gstffmpegscale.c | 612 +++++++++++++++++------------------- 4 files changed, 306 insertions(+), 339 deletions(-) diff --git a/ChangeLog b/ChangeLog index 848968b440..144a63cdb7 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,18 @@ +2006-03-01 Michal Benes + + Reviewed by : Edward Hervey + + * ext/ffmpeg/Makefile.am: + * ext/ffmpeg/gstffmpeg.c: (plugin_init): + * ext/ffmpeg/gstffmpegscale.c: (gst_ffmpegscale_base_init), + (gst_ffmpegscale_class_init), (gst_ffmpegscale_init), + (gst_ffmpegscale_finalize), (gst_ffmpegscale_transform_caps), + (gst_ffmpegscale_fixate_caps), (gst_ffmpegscale_get_unit_size), + (gst_ffmpegscale_set_caps), (gst_ffmpegscale_transform), + (gst_ffmpegscale_handle_src_event), (gst_ffmpegscale_register): + Port of ffvideoscale to 0.10. + Closes #332557 + 2006-03-01 Josef Zlomek Reviewed by : Edward Hervey diff --git a/ext/ffmpeg/Makefile.am b/ext/ffmpeg/Makefile.am index 1b77dcd77f..6634125e5a 100644 --- a/ext/ffmpeg/Makefile.am +++ b/ext/ffmpeg/Makefile.am @@ -1,14 +1,14 @@ plugin_LTLIBRARIES = libgstffmpeg.la -libgstffmpeg_la_SOURCES = gstffmpeg.c \ +libgstffmpeg_la_SOURCES = gstffmpeg.c \ + gstffmpegprotocol.c \ gstffmpegcodecmap.c \ - gstffmpegdec.c \ gstffmpegenc.c \ - gstffmpegdeinterlace.c \ + gstffmpegdec.c \ gstffmpegdemux.c \ - gstffmpegprotocol.c -# gstffmpegmux.c \ -# gstffmpegscale.c + gstffmpegdeinterlace.c \ + gstffmpegscale.c +# gstffmpegmux.c libgstffmpeg_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) \ -I $(top_srcdir)/gst-libs/ext/ffmpeg/libavformat \ @@ -16,7 +16,7 @@ libgstffmpeg_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS) \ -I $(top_srcdir)/gst-libs/ext/ffmpeg/libavcodec libgstffmpeg_la_LIBADD = \ $(top_builddir)/gst-libs/ext/ffmpeg/libavformat/libavformat.la \ - $(GST_LIBS) + $(GST_BASE_LIBS) libgstffmpeg_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) noinst_HEADERS = \ diff --git a/ext/ffmpeg/gstffmpeg.c b/ext/ffmpeg/gstffmpeg.c index e11e8ea534..6c118c22d9 100644 --- a/ext/ffmpeg/gstffmpeg.c +++ b/ext/ffmpeg/gstffmpeg.c @@ -109,12 +109,12 @@ plugin_init (GstPlugin * plugin) gst_ffmpegenc_register (plugin); gst_ffmpegdec_register (plugin); - gst_ffmpegdeinterlace_register (plugin); gst_ffmpegdemux_register (plugin); + gst_ffmpegdeinterlace_register (plugin); + gst_ffmpegscale_register (plugin); #if 0 gst_ffmpegmux_register (plugin); gst_ffmpegcsp_register (plugin); - gst_ffmpegscale_register (plugin); #endif register_protocol (&gstreamer_protocol); diff --git a/ext/ffmpeg/gstffmpegscale.c b/ext/ffmpeg/gstffmpegscale.c index a7320fb6dd..e1866d8645 100644 --- a/ext/ffmpeg/gstffmpegscale.c +++ b/ext/ffmpeg/gstffmpegscale.c @@ -2,6 +2,7 @@ * Copyright (C) <1999> Erik Walthinsen * This file: * Copyright (C) 2005 Luca Ognibene + * Copyright (C) 2006 Martin Zlomek * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -23,133 +24,151 @@ #include "config.h" #endif -#include #ifdef HAVE_FFMPEG_UNINSTALLED #include #else #include #endif +#include +#include #include + #include "gstffmpeg.h" #include "gstffmpegcodecmap.h" -#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,GstFFMpegScale)) -#define GST_IS_FFMPEGSCALE(obj) \ - (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGSCALE)) -#define GST_IS_FFMPEGSCALE_CLASS(obj) \ - (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGSCALE)) - -typedef struct _GstFFMpegScale GstFFMpegScale; -typedef struct _GstFFMpegScaleClass GstFFMpegScaleClass; - -struct _GstFFMpegScale +typedef struct _GstFFMpegScale { - GstElement element; + GstBaseTransform element; GstPad *sinkpad, *srcpad; - gint from_width, from_height; - gint to_width, to_height; + gint in_width, in_height; + gint out_width, out_height; enum PixelFormat pixfmt; - AVPicture from_frame, to_frame; - GstCaps *sinkcaps; - - guint to_size; ImgReSampleContext *res; +} GstFFMpegScale; - gboolean passthru; -}; - -struct _GstFFMpegScaleClass +typedef struct _GstFFMpegScaleClass { - GstElementClass parent_class; -}; + GstBaseTransformClass parent_class; +} GstFFMpegScaleClass; -/* elementfactory information */ -static GstElementDetails ffmpegscale_details = { - "FFMPEG Scale element", - "Filter/Converter/Video", - "Converts video from one resolution to another", - "Luca Ognibene ", -}; +#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(obj) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGSCALE)) -/* Signals and args */ -enum -{ - /* FILL ME */ - LAST_SIGNAL -}; - -enum -{ - ARG_0, -}; - -static GstStaticPadTemplate gst_ffmpegscale_src_template = -GST_STATIC_PAD_TEMPLATE ("src", +static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) ); -static GstStaticPadTemplate gst_ffmpegscale_sink_template = -GST_STATIC_PAD_TEMPLATE ("sink", +static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")) ); +GST_BOILERPLATE (GstFFMpegScale, gst_ffmpegscale, GstBaseTransform, + GST_TYPE_BASE_TRANSFORM); -static GType gst_ffmpegscale_get_type (void); +static void gst_ffmpegscale_finalize (GObject * object); -static void gst_ffmpegscale_base_init (GstFFMpegScaleClass * klass); -static void gst_ffmpegscale_class_init (GstFFMpegScaleClass * klass); -static void gst_ffmpegscale_init (GstFFMpegScale * space); +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 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_handle_src_event (GstPad * pad, + GstEvent * event); -static GstPadLinkReturn -gst_ffmpegscale_pad_link (GstPad * pad, const GstCaps * caps); +static void +gst_ffmpegscale_base_init (gpointer g_class) +{ + static GstElementDetails plugin_details = { + "FFMPEG Scale element", + "Filter/Converter/Video", + "Converts video from one resolution to another", + "Luca Ognibene ", + }; + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); -static void gst_ffmpegscale_chain (GstPad * pad, GstData * data); -static GstStateChangeReturn gst_ffmpegscale_change_state (GstElement * element, - GstStateChange transition); + 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 (element_class, &plugin_details); +} -static GstElementClass *parent_class = NULL; +static void +gst_ffmpegscale_class_init (GstFFMpegScaleClass * klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (klass); -/*static guint gst_ffmpegscale_signals[LAST_SIGNAL] = { 0 }; */ + gobject_class->finalize = gst_ffmpegscale_finalize; + + 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->pixfmt = PIX_FMT_NB; + scale->res = NULL; +} + +static void +gst_ffmpegscale_finalize (GObject * object) +{ + GstFFMpegScale *scale = GST_FFMPEGSCALE (object); + + if (scale->res != NULL) + img_resample_close (scale->res); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} static GstCaps * -gst_ffmpegscale_getcaps (GstPad * pad) +gst_ffmpegscale_transform_caps (GstBaseTransform * trans, + GstPadDirection direction, GstCaps * caps) { - GstFFMpegScale *filter; - GstCaps *othercaps; - GstCaps *caps; - GstPad *otherpad; - gint i; - - filter = GST_FFMPEGSCALE (gst_pad_get_parent (pad)); + GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); + GstCaps *retcaps; + int i; - otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad; + retcaps = gst_caps_copy (caps); - othercaps = gst_pad_get_allowed_caps (otherpad); - - caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad)); - gst_caps_free (othercaps); - - for (i = 0; i < gst_caps_get_size (caps); i++) { - GstStructure *structure = gst_caps_get_structure (caps, i); + for (i = 0; i < gst_caps_get_size (retcaps); i++) { + GstStructure *structure = gst_caps_get_structure (retcaps, i); gst_structure_set (structure, "width", GST_TYPE_INT_RANGE, 16, 4096, @@ -157,34 +176,105 @@ gst_ffmpegscale_getcaps (GstPad * pad) gst_structure_remove_field (structure, "pixel-aspect-ratio"); } - GST_DEBUG ("getcaps are: %" GST_PTR_FORMAT, caps); - - return caps; + return retcaps; } -static GstPadLinkReturn -gst_ffmpegscale_pad_link (GstPad * pad, const GstCaps * caps) +static void +gst_ffmpegscale_fixate_caps (GstBaseTransform * trans, + GstPadDirection direction, GstCaps * caps, GstCaps * othercaps) { - GstStructure *structure; + GstStructure *instructure = gst_caps_get_structure (caps, 0); + GstStructure *outstructure = gst_caps_get_structure (othercaps, 0); + const GValue *in_par, *out_par; + + in_par = gst_structure_get_value (instructure, "pixel-aspect-ratio"); + out_par = gst_structure_get_value (outstructure, "pixel-aspect-ratio"); + + if (in_par && out_par) { + GValue out_ratio = { 0, }; /* w/h of output video */ + int in_w, in_h, in_par_n, in_par_d, out_par_n, out_par_d; + int count = 0, w = 0, h = 0, num, den; + + /* if both width and height are already fixed, we can't do anything + * about it anymore */ + if (gst_structure_get_int (outstructure, "width", &w)) + ++count; + if (gst_structure_get_int (outstructure, "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 (instructure, "width", &in_w); + gst_structure_get_int (instructure, "height", &in_h); + in_par_n = gst_value_get_fraction_numerator (in_par); + in_par_d = gst_value_get_fraction_denominator (in_par); + out_par_n = gst_value_get_fraction_numerator (out_par); + out_par_d = gst_value_get_fraction_denominator (out_par); + + g_value_init (&out_ratio, GST_TYPE_FRACTION); + gst_value_set_fraction (&out_ratio, in_w * in_par_n * out_par_d, + in_h * in_par_d * out_par_n); + num = gst_value_get_fraction_numerator (&out_ratio); + den = gst_value_get_fraction_denominator (&out_ratio); + GST_DEBUG_OBJECT (trans, + "scaling input with %dx%d and PAR %d/%d to output PAR %d/%d", + in_w, in_h, in_par_n, in_par_d, out_par_n, out_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 */ + + /* start with same height, because of interlaced video */ + /* check hd / den is an integer scale factor, and scale wd with the PAR */ + if (in_h % den == 0) { + GST_DEBUG_OBJECT (trans, "keeping video height"); + h = in_h; + w = h * num / den; + } else if (in_w % num == 0) { + GST_DEBUG_OBJECT (trans, "keeping video width"); + w = in_w; + h = w * den / num; + } else { + GST_DEBUG_OBJECT (trans, "approximating but keeping video height"); + h = in_h; + w = h * num / den; + } + GST_DEBUG_OBJECT (trans, "scaling to %dx%d", w, h); + + /* now fixate */ + gst_structure_fixate_field_nearest_int (outstructure, "width", w); + gst_structure_fixate_field_nearest_int (outstructure, "height", h); + } else { + gint width, height; + + if (gst_structure_get_int (instructure, "width", &width)) { + if (gst_structure_has_field (outstructure, "width")) + gst_structure_fixate_field_nearest_int (outstructure, "width", width); + } + if (gst_structure_get_int (instructure, "height", &height)) { + if (gst_structure_has_field (outstructure, "height")) + gst_structure_fixate_field_nearest_int (outstructure, "height", height); + } + } +} + +static gboolean +gst_ffmpegscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps, + guint * size) +{ + GstStructure *structure = gst_caps_get_structure (caps, 0); + gint width, height; AVCodecContext *ctx; - GstFFMpegScale *scale; - GstPad *otherpad; - GstPadLinkReturn ret; - int height, width; - gchar *caps_string; - caps_string = gst_caps_to_string (caps); - GST_DEBUG ("ffmpegscale _link %s\n", caps_string); - g_free (caps_string); - - scale = GST_FFMPEGSCALE (gst_pad_get_parent (pad)); - - otherpad = (pad == scale->srcpad) ? scale->sinkpad : - scale->srcpad; - - structure = gst_caps_get_structure (caps, 0); - ret = gst_structure_get_int (structure, "width", &width); - ret &= gst_structure_get_int (structure, "height", &height); + if (!gst_structure_get_int (structure, "width", &width)) + return FALSE; + if (!gst_structure_get_int (structure, "height", &height)) + return FALSE; ctx = avcodec_alloc_context (); ctx->width = width; @@ -193,258 +283,120 @@ gst_ffmpegscale_pad_link (GstPad * pad, const GstCaps * caps) gst_ffmpeg_caps_with_codectype (CODEC_TYPE_VIDEO, caps, ctx); if (ctx->pix_fmt == PIX_FMT_NB) { av_free (ctx); + return FALSE; + } - /* we disable ourself here */ - return GST_PAD_LINK_REFUSED; + *size = (guint) avpicture_get_size (ctx->pix_fmt, ctx->width, ctx->height); + + av_free (ctx); + + return TRUE; +} + +static gboolean +gst_ffmpegscale_set_caps (GstBaseTransform * trans, GstCaps * incaps, + GstCaps * outcaps) +{ + GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); + GstStructure *instructure = gst_caps_get_structure (incaps, 0); + GstStructure *outstructure = gst_caps_get_structure (outcaps, 0); + gint par_num, par_den; + AVCodecContext *ctx; + + if (!gst_structure_get_int (instructure, "width", &scale->in_width)) + return FALSE; + if (!gst_structure_get_int (instructure, "height", &scale->in_height)) + return FALSE; + + if (!gst_structure_get_int (outstructure, "width", &scale->out_width)) + return FALSE; + if (!gst_structure_get_int (outstructure, "height", &scale->out_height)) + return FALSE; + + if (gst_structure_get_fraction (instructure, "pixel-aspect-ratio", + &par_num, &par_den)) { + gst_structure_set (outstructure, + "pixel-aspect-ratio", GST_TYPE_FRACTION, + par_num * scale->in_width / scale->out_width, + par_den * scale->in_height / scale->out_height, NULL); + } + + ctx = avcodec_alloc_context (); + ctx->width = scale->in_width; + ctx->height = scale->in_height; + ctx->pix_fmt = PIX_FMT_NB; + gst_ffmpeg_caps_with_codectype (CODEC_TYPE_VIDEO, incaps, ctx); + if (ctx->pix_fmt == PIX_FMT_NB) { + av_free (ctx); + return FALSE; } scale->pixfmt = ctx->pix_fmt; + av_free (ctx); - ret = gst_pad_try_set_caps (otherpad, caps); - if (ret == GST_PAD_LINK_OK) { - /* cool, we can use passthru */ + scale->res = img_resample_init (scale->out_width, scale->out_height, + scale->in_width, scale->in_height); - scale->to_width = width; - scale->to_height = height; - scale->from_width = width; - scale->from_height = height; - - scale->passthru = TRUE; - GST_FLAG_SET (scale, GST_ELEMENT_WORK_IN_PLACE); - - return GST_PAD_LINK_OK; - } - - if (gst_pad_is_negotiated (otherpad)) { - GstCaps *newcaps = gst_caps_copy (caps); - - if (pad == scale->srcpad) { - gst_caps_set_simple (newcaps, - "width", G_TYPE_INT, scale->from_width, - "height", G_TYPE_INT, scale->from_height, NULL); - } else { - gst_caps_set_simple (newcaps, - "width", G_TYPE_INT, scale->to_width, - "height", G_TYPE_INT, scale->to_height, NULL); - } - ret = gst_pad_try_set_caps (otherpad, newcaps); - gst_caps_free (newcaps); - - if (GST_PAD_LINK_FAILED (ret)) { - return GST_PAD_LINK_REFUSED; - } - } - - scale->passthru = FALSE; - GST_FLAG_UNSET (scale, GST_ELEMENT_WORK_IN_PLACE); - - if (pad == scale->srcpad) { - scale->to_width = width; - scale->to_height = height; - - } else { - scale->from_width = width; - scale->from_height = height; - } - - if (gst_pad_is_negotiated (otherpad)) { - - scale->to_size = avpicture_get_size (scale->pixfmt, scale->to_width, scale->to_height); - - if (scale->res != NULL) img_resample_close (scale->res); - - scale->res = img_resample_init (scale->to_width, scale->to_height, - scale->from_width, scale->from_height); - - } - - return GST_PAD_LINK_OK; + return TRUE; } -static GType -gst_ffmpegscale_get_type (void) +static GstFlowReturn +gst_ffmpegscale_transform (GstBaseTransform * trans, GstBuffer * inbuf, + GstBuffer * outbuf) { - static GType ffmpegscale_type = 0; + GstFFMpegScale *scale = GST_FFMPEGSCALE (trans); + AVPicture in_frame, out_frame; - if (!ffmpegscale_type) { - static const GTypeInfo ffmpegscale_info = { - sizeof (GstFFMpegScaleClass), - (GBaseInitFunc) gst_ffmpegscale_base_init, - NULL, - (GClassInitFunc) gst_ffmpegscale_class_init, - NULL, - NULL, - sizeof (GstFFMpegScale), - 0, - (GInstanceInitFunc) gst_ffmpegscale_init, - }; + gst_buffer_stamp (outbuf, inbuf); - ffmpegscale_type = g_type_register_static (GST_TYPE_ELEMENT, - "GstFFMpegScale", &ffmpegscale_info, 0); - } + gst_ffmpeg_avpicture_fill (&in_frame, + GST_BUFFER_DATA (inbuf), + scale->pixfmt, scale->in_width, scale->in_height); - return ffmpegscale_type; + gst_ffmpeg_avpicture_fill (&out_frame, + GST_BUFFER_DATA (outbuf), + scale->pixfmt, scale->out_width, scale->out_height); + + img_resample (scale->res, &out_frame, &in_frame); + + return GST_FLOW_OK; } -static void -gst_ffmpegscale_base_init (GstFFMpegScaleClass * klass) +static gboolean +gst_ffmpegscale_handle_src_event (GstPad * pad, GstEvent * event) { - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + GstFFMpegScale *scale = GST_FFMPEGSCALE (gst_pad_get_parent (pad)); + GstStructure *structure; + gdouble pointer; - gst_element_class_set_details (element_class, &ffmpegscale_details); + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_NAVIGATION: + event = + GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event))); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&gst_ffmpegscale_src_template)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&gst_ffmpegscale_sink_template)); -} - -static void -gst_ffmpegscale_class_init (GstFFMpegScaleClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - - parent_class = g_type_class_ref (GST_TYPE_ELEMENT); - - gobject_class->set_property = gst_ffmpegscale_set_property; - gobject_class->get_property = gst_ffmpegscale_get_property; - - gstelement_class->change_state = gst_ffmpegscale_change_state; -} - -static void -gst_ffmpegscale_init (GstFFMpegScale * scale) -{ - scale->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get - (&gst_ffmpegscale_sink_template), - "sink"); - gst_pad_set_link_function (scale->sinkpad, gst_ffmpegscale_pad_link); - gst_pad_set_getcaps_function (scale->sinkpad, gst_ffmpegscale_getcaps); - gst_pad_set_chain_function (scale->sinkpad, gst_ffmpegscale_chain); - gst_element_add_pad (GST_ELEMENT (scale), scale->sinkpad); - - scale->srcpad = gst_pad_new_from_template (gst_static_pad_template_get - (&gst_ffmpegscale_src_template), - "src"); - gst_element_add_pad (GST_ELEMENT (scale), scale->srcpad); - gst_pad_set_link_function (scale->srcpad, gst_ffmpegscale_pad_link); - gst_pad_set_getcaps_function (scale->srcpad, gst_ffmpegscale_getcaps); - - scale->pixfmt = PIX_FMT_NB; - scale->passthru = FALSE; - scale->res = NULL; -} - -static void -gst_ffmpegscale_chain (GstPad * pad, GstData * data) -{ - GstBuffer *inbuf = GST_BUFFER (data); - GstFFMpegScale *scale; - GstBuffer *outbuf = NULL; - - g_return_if_fail (pad != NULL); - g_return_if_fail (GST_IS_PAD (pad)); - g_return_if_fail (inbuf != NULL); - - scale = GST_FFMPEGSCALE (gst_pad_get_parent (pad)); - - g_return_if_fail (scale != NULL); - g_return_if_fail (GST_IS_FFMPEGSCALE (scale)); - - if (!GST_PAD_IS_USABLE (scale->srcpad)) { - gst_buffer_unref (inbuf); - return; - } - - if (scale->passthru == TRUE) { - gst_pad_push (scale->srcpad, GST_DATA (inbuf)); - - return ; - } - - outbuf = gst_pad_alloc_buffer_and_set_caps (scale->srcpad, GST_BUFFER_OFFSET_NONE, scale->to_size); - - gst_ffmpeg_avpicture_fill (&scale->from_frame, - GST_BUFFER_DATA (inbuf), - scale->pixfmt, - scale->from_width, scale->from_height); - - gst_ffmpeg_avpicture_fill (&scale->to_frame, - GST_BUFFER_DATA (outbuf), - scale->pixfmt, - scale->to_width, scale->to_height); - - img_resample (scale->res, &scale->to_frame, &scale->from_frame); - - gst_buffer_stamp (outbuf, (const GstBuffer *) inbuf); - - gst_buffer_unref (inbuf); - gst_pad_push (scale->srcpad, GST_DATA (outbuf)); - -} - -static GstStateChangeReturn -gst_ffmpegscale_change_state (GstElement * element, GstStateChange transition) -{ - GstFFMpegScale *scale; - - scale = GST_FFMPEGSCALE (element); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_NULL: - if (scale->res != NULL) - img_resample_close (scale->res); + structure = 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; - } - - if (parent_class->change_state) - return parent_class->change_state (element, transition); - - return GST_STATE_CHANGE_SUCCESS; -} - -static void -gst_ffmpegscale_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec) -{ - GstFFMpegScale *scale; - - /* it's not null if we got it, but it might not be ours */ - g_return_if_fail (GST_IS_FFMPEGSCALE (object)); - scale = GST_FFMPEGSCALE (object); - - switch (prop_id) { default: break; } -} -static void -gst_ffmpegscale_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec) -{ - GstFFMpegScale *scale; - - /* it's not null if we got it, but it might not be ours */ - g_return_if_fail (GST_IS_FFMPEGSCALE (object)); - scale = GST_FFMPEGSCALE (object); - - switch (prop_id) { - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } + return gst_pad_event_default (pad, event); } gboolean gst_ffmpegscale_register (GstPlugin * plugin) { - return gst_element_register (plugin, "ffvideoscale", GST_RANK_NONE, GST_TYPE_FFMPEGSCALE); }