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diff --git a/gst/y4m/gsty4mencode.c b/gst/y4m/gsty4mencode.c
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-/* 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)
generated by cgit v1.2.1 (git 2.18.0) at 2024-10-31 01:17:38 +0000