mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e69ece9d7e
Original commit message from CVS: remove copyright field from plugins
308 lines
7.8 KiB
C
308 lines
7.8 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <math.h>
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include "gsty4mencode.h"
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static GstElementDetails y4mencode_details = GST_ELEMENT_DETAILS (
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"Y4mEncode",
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"Codec/Encoder/Video",
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"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
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"Wim Taymans <wim.taymans@chello.be>"
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);
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/* Filter signals and args */
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enum {
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/* FILL ME */
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LAST_SIGNAL
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};
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enum {
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ARG_0
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};
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GST_PAD_TEMPLATE_FACTORY (y4mencode_src_factory,
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"src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_CAPS_NEW (
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"test_src",
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"application/x-yuv4mpeg",
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"y4mversion", GST_PROPS_INT (1)
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)
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)
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GST_PAD_TEMPLATE_FACTORY (y4mencode_sink_factory,
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"sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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gst_caps_new (
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"test_src",
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"video/x-raw-yuv",
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GST_VIDEO_YUV_PAD_TEMPLATE_PROPS (
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GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")))
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)
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)
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static void gst_y4mencode_base_init (gpointer g_class);
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static void gst_y4mencode_class_init (GstY4mEncodeClass *klass);
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static void gst_y4mencode_init (GstY4mEncode *filter);
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static void gst_y4mencode_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gst_y4mencode_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gst_y4mencode_chain (GstPad *pad,
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GstData *_data);
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static GstElementStateReturn
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gst_y4mencode_change_state (GstElement *element);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_y4mencode_get_type(void) {
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static GType y4mencode_type = 0;
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if (!y4mencode_type) {
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static const GTypeInfo y4mencode_info = {
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sizeof(GstY4mEncodeClass),
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gst_y4mencode_base_init,
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NULL,
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(GClassInitFunc)gst_y4mencode_class_init,
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NULL,
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NULL,
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sizeof(GstY4mEncode),
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0,
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(GInstanceInitFunc)gst_y4mencode_init,
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};
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y4mencode_type = g_type_register_static(GST_TYPE_ELEMENT,
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"GstY4mEncode",
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&y4mencode_info, 0);
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}
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return y4mencode_type;
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}
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static void
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gst_y4mencode_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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GST_PAD_TEMPLATE_GET (y4mencode_src_factory));
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gst_element_class_add_pad_template (element_class,
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GST_PAD_TEMPLATE_GET (y4mencode_sink_factory));
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gst_element_class_set_details (element_class, &y4mencode_details);
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}
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static void
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gst_y4mencode_class_init (GstY4mEncodeClass *klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass*)klass;
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gstelement_class = (GstElementClass*)klass;
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parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
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gstelement_class->change_state = gst_y4mencode_change_state;
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gobject_class->set_property = gst_y4mencode_set_property;
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gobject_class->get_property = gst_y4mencode_get_property;
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}
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static GstPadLinkReturn
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gst_y4mencode_sinkconnect (GstPad *pad, GstCaps *caps)
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{
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GstY4mEncode *filter;
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gint idx = -1, i;
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gfloat fps;
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float framerates[] = {
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00.000,
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23.976, 24.000, /* 24fps movie */
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25.000, /* PAL */
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29.970, 30.000, /* NTSC */
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50.000,
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59.940, 60.000
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};
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filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
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if (!GST_CAPS_IS_FIXED (caps))
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return GST_PAD_LINK_DELAYED;
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gst_caps_get_int (caps, "width", &filter->width);
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gst_caps_get_int (caps, "height", &filter->height);
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gst_caps_get_float (caps, "framerate", &fps);
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/* find fps idx */
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for (i = 1; i < 9; i++) {
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if (idx == -1) {
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idx = i;
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} else {
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gfloat old_diff = fabs(framerates[idx] - fps),
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new_diff = fabs(framerates[i] - fps);
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if (new_diff < old_diff) {
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idx = i;
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}
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}
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}
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filter->fps_idx = idx;
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return GST_PAD_LINK_OK;
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}
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static void
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gst_y4mencode_init (GstY4mEncode *filter)
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{
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filter->sinkpad = gst_pad_new_from_template(
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GST_PAD_TEMPLATE_GET (y4mencode_sink_factory), "sink");
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gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
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gst_pad_set_chain_function (filter->sinkpad, gst_y4mencode_chain);
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gst_pad_set_link_function (filter->sinkpad, gst_y4mencode_sinkconnect);
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filter->srcpad = gst_pad_new_from_template(
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GST_PAD_TEMPLATE_GET (y4mencode_src_factory), "src");
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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filter->init = TRUE;
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}
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static void
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gst_y4mencode_chain (GstPad *pad,GstData *_data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstY4mEncode *filter;
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GstBuffer* outbuf;
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gchar *header;
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gint len;
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g_return_if_fail(pad != NULL);
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g_return_if_fail(GST_IS_PAD(pad));
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g_return_if_fail(buf != NULL);
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filter = GST_Y4MENCODE (gst_pad_get_parent (pad));
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g_return_if_fail(filter != NULL);
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g_return_if_fail(GST_IS_Y4MENCODE(filter));
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outbuf = gst_buffer_new ();
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GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (buf) + 256);
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if (filter->init) {
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header = "YUV4MPEG %d %d %d\nFRAME\n";
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filter->init = FALSE;
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}
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else {
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header = "FRAME\n";
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}
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snprintf (GST_BUFFER_DATA (outbuf), 255, header,
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filter->width, filter->height, filter->fps_idx);
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len = strlen (GST_BUFFER_DATA (outbuf));
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memcpy (GST_BUFFER_DATA (outbuf) + len, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
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GST_BUFFER_SIZE (outbuf) = GST_BUFFER_SIZE (buf) + len;
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gst_buffer_unref(buf);
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gst_pad_push(filter->srcpad,GST_DATA (outbuf));
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}
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static void
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gst_y4mencode_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
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{
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GstY4mEncode *filter;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_Y4MENCODE(object));
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filter = GST_Y4MENCODE(object);
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switch (prop_id) {
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default:
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break;
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}
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}
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static void
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gst_y4mencode_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
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{
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GstY4mEncode *filter;
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/* it's not null if we got it, but it might not be ours */
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g_return_if_fail(GST_IS_Y4MENCODE(object));
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filter = GST_Y4MENCODE(object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstElementStateReturn
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gst_y4mencode_change_state (GstElement *element)
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{
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GstY4mEncode *filter;
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g_return_val_if_fail (GST_IS_Y4MENCODE (element), GST_STATE_FAILURE);
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filter = GST_Y4MENCODE(element);
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if (GST_STATE_TRANSITION (element) == GST_STATE_NULL_TO_READY) {
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filter->init = TRUE;
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return GST_ELEMENT_CLASS (parent_class)->change_state (element);
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return GST_STATE_SUCCESS;
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}
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static gboolean
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plugin_init (GstPlugin *plugin)
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{
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return gst_element_register (plugin, "y4menc", GST_RANK_NONE, GST_TYPE_Y4MENCODE);
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}
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GST_PLUGIN_DEFINE (
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"y4menc",
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"Encodes a YUV frame into the yuv4mpeg format (mjpegtools)",
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plugin_init,
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VERSION,
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GST_LICENSE,
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GST_PACKAGE,
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GST_ORIGIN
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)
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