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59ec603210
Original commit message from CVS: * ext/jpeg/gstsmokedec.c: (gst_smokedec_chain): * ext/jpeg/gstsmokeenc.c: (gst_smokeenc_chain): Fix leaks.
271 lines
7.7 KiB
C
271 lines
7.7 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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/*#define DEBUG_ENABLED*/
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#include "gstsmokedec.h"
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#include <gst/video/video.h>
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/* elementfactory information */
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GstElementDetails gst_smokedec_details = {
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"Smoke video decoder",
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"Codec/Decoder/Image",
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"Decode video from Smoke format",
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"Wim Taymans <wim@fluendo.com>",
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};
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GST_DEBUG_CATEGORY (smokedec_debug);
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#define GST_CAT_DEFAULT smokedec_debug
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/* SmokeDec signals and args */
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enum
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{
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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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{
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ARG_0
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/* FILL ME */
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};
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static void gst_smokedec_base_init (gpointer g_class);
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static void gst_smokedec_class_init (GstSmokeDec * klass);
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static void gst_smokedec_init (GstSmokeDec * smokedec);
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static void gst_smokedec_chain (GstPad * pad, GstData * _data);
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static GstPadLinkReturn gst_smokedec_link (GstPad * pad, const GstCaps * caps);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_smokedec_signals[LAST_SIGNAL] = { 0 }; */
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GType
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gst_smokedec_get_type (void)
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{
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static GType smokedec_type = 0;
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if (!smokedec_type) {
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static const GTypeInfo smokedec_info = {
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sizeof (GstSmokeDecClass),
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gst_smokedec_base_init,
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NULL,
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(GClassInitFunc) gst_smokedec_class_init,
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NULL,
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NULL,
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sizeof (GstSmokeDec),
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0,
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(GInstanceInitFunc) gst_smokedec_init,
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};
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smokedec_type =
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g_type_register_static (GST_TYPE_ELEMENT, "GstSmokeDec", &smokedec_info,
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0);
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}
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return smokedec_type;
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}
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static GstStaticPadTemplate gst_smokedec_src_pad_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
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);
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static GstStaticPadTemplate gst_smokedec_sink_pad_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-smoke, "
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"width = (int) [ 16, 4096 ], "
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"height = (int) [ 16, 4096 ], " "framerate = (double) [ 1, MAX ]")
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);
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static void
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gst_smokedec_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_static_pad_template_get (&gst_smokedec_src_pad_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_smokedec_sink_pad_template));
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gst_element_class_set_details (element_class, &gst_smokedec_details);
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}
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static void
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gst_smokedec_class_init (GstSmokeDec * klass)
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{
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GstElementClass *gstelement_class;
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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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GST_DEBUG_CATEGORY_INIT (smokedec_debug, "smokedec", 0, "Smoke decoder");
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}
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static void
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gst_smokedec_init (GstSmokeDec * smokedec)
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{
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GST_DEBUG ("gst_smokedec_init: initializing");
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/* create the sink and src pads */
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smokedec->sinkpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_smokedec_sink_pad_template), "sink");
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gst_element_add_pad (GST_ELEMENT (smokedec), smokedec->sinkpad);
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gst_pad_set_chain_function (smokedec->sinkpad, gst_smokedec_chain);
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gst_pad_set_link_function (smokedec->sinkpad, gst_smokedec_link);
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smokedec->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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(&gst_smokedec_src_pad_template), "src");
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gst_pad_use_explicit_caps (smokedec->srcpad);
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gst_element_add_pad (GST_ELEMENT (smokedec), smokedec->srcpad);
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/* reset the initial video state */
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smokedec->format = -1;
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smokedec->width = -1;
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smokedec->height = -1;
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smokedec->next_time = 0;
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}
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static GstPadLinkReturn
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gst_smokedec_link (GstPad * pad, const GstCaps * caps)
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{
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GstSmokeDec *smokedec = GST_SMOKEDEC (gst_pad_get_parent (pad));
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GstStructure *structure;
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GstCaps *srccaps;
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_get_double (structure, "framerate", &smokedec->fps);
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gst_structure_get_int (structure, "width", &smokedec->width);
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gst_structure_get_int (structure, "height", &smokedec->height);
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srccaps = gst_caps_new_simple ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
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"width", G_TYPE_INT, smokedec->width,
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"height", G_TYPE_INT, smokedec->height,
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"framerate", G_TYPE_DOUBLE, smokedec->fps, NULL);
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/* at this point, we're pretty sure that this will be the output
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* format, so we'll set it. */
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gst_pad_set_explicit_caps (smokedec->srcpad, srccaps);
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smokecodec_decode_new (&smokedec->info);
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return GST_PAD_LINK_OK;
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}
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static void
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gst_smokedec_chain (GstPad * pad, GstData * _data)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstSmokeDec *smokedec;
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guchar *data, *outdata;
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gulong size, outsize;
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GstBuffer *outbuf;
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SmokeCodecFlags flags;
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GstClockTime time;
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gint width, height;
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gint fps_num, fps_denom;
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smokedec = GST_SMOKEDEC (GST_OBJECT_PARENT (pad));
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if (!GST_PAD_IS_LINKED (smokedec->srcpad)) {
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gst_buffer_unref (buf);
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return;
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}
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data = (guchar *) GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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time = GST_BUFFER_TIMESTAMP (buf);
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GST_DEBUG ("gst_smokedec_chain: got buffer of %ld bytes in '%s'", size,
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GST_OBJECT_NAME (smokedec));
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if (data[0] == SMOKECODEC_TYPE_ID) {
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smokecodec_parse_id (smokedec->info, data, size);
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return;
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}
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GST_DEBUG ("gst_smokedec_chain: reading header %08lx", *(gulong *) data);
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smokecodec_parse_header (smokedec->info, data, size, &flags, &width, &height,
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&fps_num, &fps_denom);
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outbuf = gst_buffer_new ();
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outsize = GST_BUFFER_SIZE (outbuf) = width * height + width * height / 2;
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outdata = g_malloc (outsize);
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GST_BUFFER_DATA (outbuf) = outdata;
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GST_BUFFER_MALLOCDATA (outbuf) = outdata;
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GST_BUFFER_DURATION (outbuf) = GST_SECOND * fps_denom / fps_num;
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GST_BUFFER_OFFSET (outbuf) = GST_BUFFER_OFFSET (buf);
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if (time == GST_CLOCK_TIME_NONE) {
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if (GST_BUFFER_OFFSET (buf) == -1) {
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time = smokedec->next_time;
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} else {
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time = GST_BUFFER_OFFSET (buf) * GST_BUFFER_DURATION (outbuf);
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}
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}
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GST_BUFFER_TIMESTAMP (outbuf) = time;
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smokedec->next_time = time + GST_BUFFER_DURATION (outbuf);
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if (smokedec->height != height) {
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GstCaps *caps;
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smokedec->height = height;
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caps = gst_caps_new_simple ("video/x-raw-yuv",
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"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
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"width", G_TYPE_INT, width,
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"height", G_TYPE_INT, height,
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"framerate", G_TYPE_DOUBLE, ((double) fps_num) / fps_denom, NULL);
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gst_pad_set_explicit_caps (smokedec->srcpad, caps);
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gst_caps_free (caps);
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}
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if (smokedec->need_keyframe) {
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if (flags & SMOKECODEC_KEYFRAME) {
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smokedec->need_keyframe = FALSE;
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} else {
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GST_DEBUG_OBJECT (smokedec, "dropping buffer while waiting for keyframe");
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gst_buffer_unref (buf);
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return;
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}
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}
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if (!smokedec->need_keyframe) {
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smokecodec_decode (smokedec->info, data, size, outdata);
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gst_buffer_unref (buf);
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GST_DEBUG ("gst_smokedec_chain: sending buffer");
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gst_pad_push (smokedec->srcpad, GST_DATA (outbuf));
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}
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}
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