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gstreamer/ext/divx/gstdivxdec.c
Ronald S. Bultje cb3a7cfe5d More 
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2003-11-02 20:37:50 +00:00

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/* GStreamer divx decoder plugin
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.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.
*/
#ifdef HAVE_CONFIG_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "config.h"
#endif
#include <string.h>
#include "gstdivxdec.h"
#include <gst/video/video.h>
/* elementfactory information */
GstElementDetails gst_divxdec_details = {
"Divx decoder",
"Codec/Video/Decoder",
"Divx decoder based on divxdecore",
"Ronald Bultje <rbultje@ronald.bitfreak.net>"
};
GST_PAD_TEMPLATE_FACTORY(sink_template,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW(
"divxdec_sink",
"video/x-divx",
"divxversion", GST_PROPS_INT_RANGE(3, 5),
"width", GST_PROPS_INT_RANGE(0, G_MAXINT),
"height", GST_PROPS_INT_RANGE(0, G_MAXINT),
"framerate", GST_PROPS_FLOAT_RANGE(0, G_MAXFLOAT)
)
)
GST_PAD_TEMPLATE_FACTORY(src_template,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new(
"divxdec_src",
"video/x-raw-yuv",
GST_VIDEO_YUV_PAD_TEMPLATE_PROPS(
GST_PROPS_LIST(
GST_PROPS_FOURCC(GST_MAKE_FOURCC('I','4','2','0')),
GST_PROPS_FOURCC(GST_MAKE_FOURCC('Y','U','Y','2')),
GST_PROPS_FOURCC(GST_MAKE_FOURCC('Y','V','1','2')),
GST_PROPS_FOURCC(GST_MAKE_FOURCC('U','Y','V','Y'))
)
)
),
gst_caps_new(
"divxdec_src_rgb1",
"video/x-raw-rgb",
GST_VIDEO_RGB_PAD_TEMPLATE_PROPS_24_32
),
gst_caps_new(
"divxdec_src_rgb2",
"video/x-raw-rgb",
GST_VIDEO_RGB_PAD_TEMPLATE_PROPS_15_16
)
)
/* DivxDec signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0
/* FILL ME */
};
static void gst_divxdec_base_init (GstDivxDecClass *klass);
static void gst_divxdec_class_init (GstDivxDecClass *klass);
static void gst_divxdec_init (GstDivxDec *divxdec);
static void gst_divxdec_dispose (GObject *object);
static void gst_divxdec_chain (GstPad *pad,
GstData *data);
static GstPadLinkReturn gst_divxdec_connect (GstPad *pad,
GstCaps *vscapslist);
static GstPadLinkReturn gst_divxdec_negotiate (GstDivxDec *divxdec);
static GstElementClass *parent_class = NULL;
/* static guint gst_divxdec_signals[LAST_SIGNAL] = { 0 }; */
static gchar *
gst_divxdec_error (int errorcode)
{
gchar *error;
switch (errorcode) {
case DEC_OK:
error = "No error";
break;
case DEC_MEMORY:
error = "Invalid memory";
break;
case DEC_BAD_FORMAT:
error = "Invalid format";
break;
case DEC_INVALID_ARGUMENT:
error = "Invalid argument";
break;
case DEC_NOT_IMPLEMENTED:
error = "Not implemented";
break;
default:
error = "Unknown error";
break;
}
return error;
}
GType
gst_divxdec_get_type(void)
{
static GType divxdec_type = 0;
if (!divxdec_type)
{
static const GTypeInfo divxdec_info = {
sizeof(GstDivxDecClass),
(GBaseInitFunc) gst_divxdec_base_init,
NULL,
(GClassInitFunc) gst_divxdec_class_init,
NULL,
NULL,
sizeof(GstDivxDec),
0,
(GInstanceInitFunc) gst_divxdec_init,
};
divxdec_type = g_type_register_static(GST_TYPE_ELEMENT,
"GstDivxDec",
&divxdec_info, 0);
}
return divxdec_type;
}
static void
gst_divxdec_base_init (GstDivxDecClass *klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
GST_PAD_TEMPLATE_GET (sink_template));
gst_element_class_add_pad_template (element_class,
GST_PAD_TEMPLATE_GET (src_template));
gst_element_class_set_details (element_class, &gst_divxdec_details);
}
static void
gst_divxdec_class_init (GstDivxDecClass *klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
gobject_class->dispose = gst_divxdec_dispose;
}
static void
gst_divxdec_init (GstDivxDec *divxdec)
{
/* create the sink pad */
divxdec->sinkpad = gst_pad_new_from_template(
GST_PAD_TEMPLATE_GET(sink_template),
"sink");
gst_element_add_pad(GST_ELEMENT(divxdec), divxdec->sinkpad);
gst_pad_set_chain_function(divxdec->sinkpad, gst_divxdec_chain);
gst_pad_set_link_function(divxdec->sinkpad, gst_divxdec_connect);
/* create the src pad */
divxdec->srcpad = gst_pad_new_from_template(
GST_PAD_TEMPLATE_GET(src_template),
"src");
gst_element_add_pad(GST_ELEMENT(divxdec), divxdec->srcpad);
/* bitrate, etc. */
divxdec->width = divxdec->height = divxdec->csp = divxdec->bitcnt = -1;
/* set divx handle to NULL */
divxdec->handle = NULL;
}
static void
gst_divxdec_unset (GstDivxDec *divxdec)
{
if (divxdec->handle) {
/* unref this instance */
decore(divxdec->handle, DEC_OPT_RELEASE, NULL, NULL);
divxdec->handle = NULL;
}
}
static gboolean
gst_divxdec_setup (GstDivxDec *divxdec)
{
void *handle;
DEC_INIT xinit;
DivXBitmapInfoHeader output;
int ret;
/* initialize the handle */
memset(&xinit, 0, sizeof(DEC_INIT));
xinit.smooth_playback = 0;
xinit.codec_version = 500;
if ((ret = decore(&handle, DEC_OPT_INIT, &xinit, NULL)) != 0) {
gst_element_error(GST_ELEMENT(divxdec),
"Error initializing divx decoding library: %s (%d)",
gst_divxdec_error(ret), ret);
return FALSE;
}
/* we've got a handle now */
divxdec->handle = handle;
/* initialise parameters, see divx documentation */
memset(&output, 0, sizeof(DivXBitmapInfoHeader));
output.biSize = sizeof(DivXBitmapInfoHeader);
output.biWidth = divxdec->width;
output.biHeight = divxdec->height;
output.biBitCount = divxdec->bitcnt;
output.biCompression = divxdec->csp;
if ((ret = decore(divxdec->handle, DEC_OPT_SETOUT,
&output, NULL)) != 0) {
gst_element_error(GST_ELEMENT(divxdec),
"Error setting output format: %s (%d)",
gst_divxdec_error(ret), ret);
gst_divxdec_unset(divxdec);
return FALSE;
}
return TRUE;
}
static void
gst_divxdec_dispose (GObject *object)
{
GstDivxDec *divxdec = GST_DIVXDEC(object);
gst_divxdec_unset(divxdec);
}
static void
gst_divxdec_chain (GstPad *pad,
GstData *_data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstDivxDec *divxdec;
GstBuffer *outbuf;
DEC_FRAME xframe;
int ret;
g_return_if_fail(pad != NULL);
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
divxdec = GST_DIVXDEC(GST_OBJECT_PARENT(pad));
if (!divxdec->handle) {
if (gst_divxdec_negotiate(divxdec) <= 0) {
gst_element_error(GST_ELEMENT(divxdec),
"No format set - aborting");
gst_buffer_unref(buf);
return;
}
}
outbuf = gst_buffer_new_and_alloc(divxdec->width *
divxdec->height *
divxdec->bpp / 8);
GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
GST_BUFFER_SIZE(outbuf) = divxdec->width *
divxdec->height *
divxdec->bpp / 8;
/* encode and so ... */
xframe.bitstream = (void *) GST_BUFFER_DATA(buf);
xframe.bmp = (void *) GST_BUFFER_DATA(outbuf);
xframe.length = GST_BUFFER_SIZE(buf);
xframe.stride = 0;
xframe.render_flag = 1;
if ((ret = decore(divxdec->handle, DEC_OPT_FRAME,
&xframe, NULL))) {
gst_element_error(GST_ELEMENT(divxdec),
"Error decoding divx frame: %s (%d)",
gst_divxdec_error(ret), ret);
gst_buffer_unref(buf);
return;
}
gst_pad_push(divxdec->srcpad, GST_DATA (outbuf));
gst_buffer_unref(buf);
}
static GstPadLinkReturn
gst_divxdec_negotiate (GstDivxDec *divxdec)
{
GstPadLinkReturn ret;
GstCaps *caps;
struct {
guint32 fourcc;
gint depth, bpp;
guint32 csp;
gint bitcnt;
} fmt_list[] = {
{ GST_MAKE_FOURCC('Y','U','Y','2'), 16, 16,
GST_MAKE_FOURCC('Y','U','Y','2'), 0 },
{ GST_MAKE_FOURCC('U','Y','V','Y'), 16, 16,
GST_MAKE_FOURCC('U','Y','V','Y'), 0 },
{ GST_MAKE_FOURCC('I','4','2','0'), 12, 12,
GST_MAKE_FOURCC('I','4','2','0'), 0 },
{ GST_MAKE_FOURCC('Y','V','1','2'), 12, 12,
GST_MAKE_FOURCC('Y','V','1','2'), 0 },
{ GST_MAKE_FOURCC('R','G','B',' '), 32, 32,
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
GST_MAKE_FOURCC('A','B','G','R'), 32 },
#else
0, 32 },
#endif
{ GST_MAKE_FOURCC('R','G','B',' '), 24, 24,
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
GST_MAKE_FOURCC('A','B','G','R'), 24 },
#else
0, 24 },
#endif
{ GST_MAKE_FOURCC('R','G','B',' '), 16, 16,
3, 16 },
{ GST_MAKE_FOURCC('R','G','B',' '), 15, 16,
0, 16 },
{ 0, 0, 0, 0, 0 }
};
gint i;
for (i = 0; fmt_list[i].fourcc != 0; i++) {
divxdec->csp = fmt_list[i].csp;
/* try making a caps to set on the other side */
if (fmt_list[i].fourcc == GST_MAKE_FOURCC('R','G','B',' ')) {
guint32 r_mask = 0, b_mask = 0, g_mask = 0;
gint endianness = 0;
switch (fmt_list[i].depth) {
case 15:
endianness = G_BYTE_ORDER;
r_mask = 0xf800; g_mask = 0x07c0; b_mask = 0x003e;
break;
case 16:
endianness = G_BYTE_ORDER;
r_mask = 0xf800; g_mask = 0x07e0; b_mask = 0x001f;
break;
case 24:
endianness = G_BIG_ENDIAN;
r_mask = R_MASK_24; g_mask = G_MASK_24; b_mask = B_MASK_24;
break;
case 32:
endianness = G_BIG_ENDIAN;
r_mask = R_MASK_32; g_mask = G_MASK_32; b_mask = B_MASK_32;
break;
}
caps = GST_CAPS_NEW("divxdec_src_pad_rgb",
"video/x-raw-rgb",
"width", GST_PROPS_INT(divxdec->width),
"height", GST_PROPS_INT(divxdec->height),
"framerate", GST_PROPS_FLOAT(divxdec->fps),
"depth", GST_PROPS_INT(fmt_list[i].depth),
"bpp", GST_PROPS_INT(fmt_list[i].bpp),
"endianness", GST_PROPS_INT(endianness),
"red_mask", GST_PROPS_INT(r_mask),
"green_mask", GST_PROPS_INT(g_mask),
"blue_mask", GST_PROPS_INT(b_mask));
} else {
caps = GST_CAPS_NEW("divxdec_src_pad_yuv",
"video/x-raw-yuv",
"width", GST_PROPS_INT(divxdec->width),
"height", GST_PROPS_INT(divxdec->height),
"framerate", GST_PROPS_FLOAT(divxdec->fps),
"format", GST_PROPS_FOURCC(fmt_list[i].fourcc));
}
if ((ret = gst_pad_try_set_caps(divxdec->srcpad, caps)) > 0) {
divxdec->csp = fmt_list[i].csp;
divxdec->bpp = fmt_list[i].bpp;
divxdec->bitcnt = fmt_list[i].bitcnt;
if (gst_divxdec_setup(divxdec))
return GST_PAD_LINK_OK;
} else if (ret == GST_PAD_LINK_DELAYED) {
return ret; /* trying more is useless */
}
}
/* if we got here - it's not good */
return GST_PAD_LINK_REFUSED;
}
static GstPadLinkReturn
gst_divxdec_connect (GstPad *pad,
GstCaps *vscaps)
{
GstDivxDec *divxdec;
divxdec = GST_DIVXDEC(gst_pad_get_parent (pad));
/* if there's something old around, remove it */
if (divxdec->handle) {
gst_divxdec_unset(divxdec);
}
/* we are not going to act on variable caps */
if (!GST_CAPS_IS_FIXED(vscaps))
return GST_PAD_LINK_DELAYED;
/* if we get here, we know the input is divx. we
* only need to bother with the output colorspace */
gst_caps_get_int(vscaps, "width", &divxdec->width);
gst_caps_get_int(vscaps, "height", &divxdec->height);
gst_caps_get_float(vscaps, "framerate", &divxdec->fps);
return gst_divxdec_negotiate(divxdec);
}
static gboolean
plugin_init (GstPlugin *plugin)
{
int lib_version;
lib_version = decore(NULL, DEC_OPT_VERSION, 0, 0);
if (lib_version != DECORE_VERSION) {
g_warning("Version mismatch! This plugin was compiled for "
"DivX version %d, while your library has version %d!",
DECORE_VERSION, lib_version);
return FALSE;
}
/* create an elementfactory for the v4lmjpegsrcparse element */
return gst_element_register(plugin, "divxdec",
GST_RANK_PRIMARY, GST_TYPE_DIVXDEC);
}
GST_PLUGIN_DEFINE (
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"divxdec",
"DivX decoder",
plugin_init,
"5.03",
GST_LICENSE_UNKNOWN,
"(c) 2002 DivX Networks",
"divx4linux",
"http://www.divx.com/"
)
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