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Diffstat (limited to 'gst/y4m/gsty4mencode.c')
-rw-r--r-- | gst/y4m/gsty4mencode.c | 332 |
1 files changed, 0 insertions, 332 deletions
diff --git a/gst/y4m/gsty4mencode.c b/gst/y4m/gsty4mencode.c deleted file mode 100644 index dc218643..00000000 --- a/gst/y4m/gsty4mencode.c +++ /dev/null @@ -1,332 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> - * Copyright (C) <2006> Mark Nauwelaerts <mnauw@users.sourceforge.net> - * - * 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-y4menc - * - * <refsect2> - * <para> - * Creates a YU4MPEG2 raw video stream as defined by the mjpegtools project. - * </para> - * <title>Example launch line</title> - * <para> - * (write everything in one line, without the backslash characters) - * <programlisting> - * gst-launch-0.10 videotestsrc num-buffers=250 \ - * ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,framerate=(fraction)25/1' \ - * ! y4menc ! filesink location=test.yuv - * </programlisting> - * </para> - * </refsect2> - * - */ - -/* see mjpegtools/yuv4mpeg.h for yuv4mpeg format */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif -#include <string.h> -#include <gst/gst.h> -#include <gst/video/video.h> -#include "gsty4mencode.h" - -static const GstElementDetails y4mencode_details = -GST_ELEMENT_DETAILS ("YUV4MPEG video encoder", - "Codec/Encoder/Video", - "Encodes a YUV frame into the yuv4mpeg format (mjpegtools)", - "Wim Taymans <wim.taymans@chello.be>"); - - -/* Filter signals and args */ -enum -{ - /* FILL ME */ - LAST_SIGNAL -}; - -enum -{ - ARG_0 -}; - -static GstStaticPadTemplate y4mencode_src_factory = -GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("application/x-yuv4mpeg, " "y4mversion = (int) 2") - ); - -static GstStaticPadTemplate y4mencode_sink_factory = -GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420 }")) - ); - - -static void gst_y4m_encode_set_property (GObject * object, - guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_y4m_encode_get_property (GObject * object, - guint prop_id, GValue * value, GParamSpec * pspec); - -static void gst_y4m_encode_reset (GstY4mEncode * filter); - -static gboolean gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps); -static GstFlowReturn gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf); -static GstStateChangeReturn gst_y4m_encode_change_state (GstElement * element, - GstStateChange transition); - -GST_BOILERPLATE (GstY4mEncode, gst_y4m_encode, GstElement, GST_TYPE_ELEMENT); - - -static void -gst_y4m_encode_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 (&y4mencode_src_factory)); - gst_element_class_add_pad_template (element_class, - gst_static_pad_template_get (&y4mencode_sink_factory)); - gst_element_class_set_details (element_class, &y4mencode_details); -} - -static void -gst_y4m_encode_class_init (GstY4mEncodeClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - - gstelement_class->change_state = - GST_DEBUG_FUNCPTR (gst_y4m_encode_change_state); - - gobject_class->set_property = gst_y4m_encode_set_property; - gobject_class->get_property = gst_y4m_encode_get_property; -} - -static void -gst_y4m_encode_init (GstY4mEncode * filter, GstY4mEncodeClass * klass) -{ - filter->sinkpad = - gst_pad_new_from_static_template (&y4mencode_sink_factory, "sink"); - gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); - gst_pad_set_chain_function (filter->sinkpad, - GST_DEBUG_FUNCPTR (gst_y4m_encode_chain)); - gst_pad_set_setcaps_function (filter->sinkpad, - GST_DEBUG_FUNCPTR (gst_y4m_encode_setcaps)); - - filter->srcpad = - gst_pad_new_from_static_template (&y4mencode_src_factory, "src"); - gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad); - gst_pad_use_fixed_caps (filter->srcpad); - - /* init properties */ - gst_y4m_encode_reset (filter); -} - -static void -gst_y4m_encode_reset (GstY4mEncode * filter) -{ - filter->width = filter->height = -1; - filter->fps_num = filter->fps_den = 1; - filter->par_num = filter->par_den = 1; -} - -static gboolean -gst_y4m_encode_setcaps (GstPad * pad, GstCaps * vscaps) -{ - GstY4mEncode *filter; - GstStructure *structure; - gboolean res; - gint w, h; - const GValue *fps, *par; - - filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad)); - - structure = gst_caps_get_structure (vscaps, 0); - - res = gst_structure_get_int (structure, "width", &w); - res &= gst_structure_get_int (structure, "height", &h); - res &= ((fps = gst_structure_get_value (structure, "framerate")) != NULL); - - if (!res || w <= 0 || h <= 0 || !GST_VALUE_HOLDS_FRACTION (fps)) - return FALSE; - - /* optional par info */ - par = gst_structure_get_value (structure, "pixel-aspect-ratio"); - - filter->width = w; - filter->height = h; - filter->fps_num = gst_value_get_fraction_numerator (fps); - filter->fps_den = gst_value_get_fraction_denominator (fps); - if ((par != NULL) && GST_VALUE_HOLDS_FRACTION (par)) { - filter->par_num = gst_value_get_fraction_numerator (par); - filter->par_den = gst_value_get_fraction_denominator (par); - } else { /* indicates unknown */ - filter->par_num = 0; - filter->par_den = 0; - } - - /* the template caps will do for the src pad, should always accept */ - return gst_pad_set_caps (filter->srcpad, - gst_static_pad_template_get_caps (&y4mencode_src_factory)); -} - -static inline GstBuffer * -gst_y4m_encode_get_stream_header (GstY4mEncode * filter) -{ - gpointer header; - GstBuffer *buf; - - header = g_strdup_printf ("YUV4MPEG2 W%d H%d I? F%d:%d A%d:%d\n", - filter->width, filter->height, - filter->fps_num, filter->fps_den, filter->par_num, filter->par_den); - - buf = gst_buffer_new (); - gst_buffer_set_data (buf, header, strlen (header)); - /* so it gets free'd when needed */ - GST_BUFFER_MALLOCDATA (buf) = header; - - return buf; -} - -static inline GstBuffer * -gst_y4m_encode_get_frame_header (GstY4mEncode * filter) -{ - gpointer header; - GstBuffer *buf; - - header = g_strdup_printf ("FRAME\n"); - - buf = gst_buffer_new (); - gst_buffer_set_data (buf, header, strlen (header)); - /* so it gets free'd when needed */ - GST_BUFFER_MALLOCDATA (buf) = header; - - return buf; -} - -static GstFlowReturn -gst_y4m_encode_chain (GstPad * pad, GstBuffer * buf) -{ - GstY4mEncode *filter = GST_Y4M_ENCODE (GST_PAD_PARENT (pad)); - GstBuffer *outbuf; - - /* check we got some decent info from caps */ - if (filter->width < 0) { - GST_ELEMENT_ERROR ("filter", CORE, NEGOTIATION, (NULL), - ("format wasn't negotiated before chain function")); - gst_buffer_unref (buf); - return GST_FLOW_NOT_NEGOTIATED; - } - - if (G_UNLIKELY (!filter->header)) { - outbuf = gst_y4m_encode_get_stream_header (filter); - filter->header = TRUE; - outbuf = gst_buffer_join (outbuf, gst_y4m_encode_get_frame_header (filter)); - } else { - outbuf = gst_y4m_encode_get_frame_header (filter); - } - /* join with data */ - outbuf = gst_buffer_join (outbuf, buf); - /* decorate */ - gst_buffer_make_metadata_writable (outbuf); - gst_buffer_set_caps (outbuf, GST_PAD_CAPS (filter->srcpad)); - /* strip to avoid sink dropping on time-base, decorate and send */ - GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE; - return gst_pad_push (filter->srcpad, outbuf); -} - -static void -gst_y4m_encode_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstY4mEncode *filter; - - g_return_if_fail (GST_IS_Y4M_ENCODE (object)); - filter = GST_Y4M_ENCODE (object); - - switch (prop_id) { - default: - break; - } -} - -static void -gst_y4m_encode_get_property (GObject * object, guint prop_id, GValue * value, - GParamSpec * pspec) -{ - GstY4mEncode *filter; - - g_return_if_fail (GST_IS_Y4M_ENCODE (object)); - filter = GST_Y4M_ENCODE (object); - - switch (prop_id) { - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static GstStateChangeReturn -gst_y4m_encode_change_state (GstElement * element, GstStateChange transition) -{ - GstY4mEncode *filter = GST_Y4M_ENCODE (element); - GstStateChangeReturn ret; - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - case GST_STATE_CHANGE_READY_TO_PAUSED: - break; - default: - break; - } - - ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state, - (element, transition), GST_STATE_CHANGE_SUCCESS); - if (ret != GST_STATE_CHANGE_SUCCESS) - return ret; - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - gst_y4m_encode_reset (filter); - break; - default: - break; - } - - return GST_STATE_CHANGE_SUCCESS; -} - -static gboolean -plugin_init (GstPlugin * plugin) -{ - return gst_element_register (plugin, "y4menc", GST_RANK_NONE, - GST_TYPE_Y4M_ENCODE); -} - -GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, - GST_VERSION_MINOR, - "y4menc", - "Encodes a YUV frame into the yuv4mpeg format (mjpegtools)", - plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) |