gstreamer/ext/divx/gstdivxdec.c
2012-04-05 18:02:56 +02:00

577 lines
14 KiB
C

/* 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
#include "config.h"
#endif
#include <string.h>
#include "gstdivxdec.h"
#include <gst/video/video.h>
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-divx, "
"divxversion = (int) [ 3, 5 ], "
"width = (int) [ 16, 4096 ], "
"height = (int) [ 16, 4096 ], " "framerate = (fraction) [0/1, MAX]")
);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, YUY2, YV12, UYVY }")
/* FIXME: 15/16/24/32bpp RGB */
)
);
/* 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 GstFlowReturn gst_divxdec_chain (GstPad * pad, GstBuffer * buf);
static gboolean gst_divxdec_connect (GstPad * pad, GstCaps * vscapslist);
static gboolean gst_divxdec_negotiate (GstDivxDec * divxdec);
static GstStateChangeReturn
gst_divxdec_change_state (GstElement * element, GstStateChange transition);
static GstElementClass *parent_class = NULL;
/* static guint gst_divxdec_signals[LAST_SIGNAL] = { 0 }; */
static const gchar *
gst_divxdec_error (int errorcode)
{
const 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_static_pad_template_get (&sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_template));
gst_element_class_set_details_simple (element_class,
"Divx4linux video decoder", "Codec/Decoder/Video",
"Divx decoder based on divxdecore",
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
}
static void
gst_divxdec_class_init (GstDivxDecClass * klass)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gstelement_class->change_state = gst_divxdec_change_state;
gobject_class->dispose = gst_divxdec_dispose;
}
static void
gst_divxdec_init (GstDivxDec * divxdec)
{
/* create the sink pad */
divxdec->sinkpad = gst_pad_new_from_static_template (&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_setcaps_function (divxdec->sinkpad, gst_divxdec_connect);
/* create the src pad */
divxdec->srcpad = gst_pad_new_from_static_template (&src_template, "src");
gst_element_add_pad (GST_ELEMENT (divxdec), divxdec->srcpad);
gst_pad_use_fixed_caps (divxdec->srcpad);
/* bitrate, etc. */
divxdec->width = divxdec->height = divxdec->csp = divxdec->bitcnt = -1;
divxdec->version = 0;
/* 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;
switch (divxdec->version) {
case 3:
xinit.codec_version = 311;
break;
case 4:
xinit.codec_version = 400;
break;
case 5:
xinit.codec_version = 500;
break;
default:
xinit.codec_version = 0;
break;
}
if ((ret = decore (&handle, DEC_OPT_INIT, &xinit, NULL)) != 0) {
GST_ELEMENT_ERROR (divxdec, LIBRARY, INIT, (NULL),
("divx library error: %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 (divxdec, LIBRARY, SETTINGS, (NULL),
("error setting output: %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);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstFlowReturn
gst_divxdec_chain (GstPad * pad, GstBuffer * buf)
{
GstDivxDec *divxdec;
GstBuffer *outbuf;
DEC_FRAME xframe;
int res;
GstFlowReturn ret;
divxdec = GST_DIVXDEC (gst_pad_get_parent (pad));
if (!divxdec->handle) {
if (gst_divxdec_negotiate (divxdec) <= 0) {
goto not_negotiated;
}
}
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 ((res = decore (divxdec->handle, DEC_OPT_FRAME, &xframe, NULL))) {
goto not_decoding;
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (divxdec->srcpad));
ret = gst_pad_push (divxdec->srcpad, outbuf);
goto cleanup;
not_negotiated:
{
GST_ELEMENT_ERROR (divxdec, CORE, TOO_LAZY, (NULL),
("No format set - aborting"));
ret = GST_FLOW_NOT_NEGOTIATED;
goto cleanup;
}
not_decoding:
{
GST_ELEMENT_ERROR (divxdec, STREAM, DECODE, (NULL),
("Error decoding divx frame: %s (%d)", gst_divxdec_error (res), res));
gst_buffer_unref (outbuf);
ret = GST_FLOW_ERROR;
goto cleanup;
}
cleanup:
gst_buffer_unref (buf);
gst_object_unref (divxdec);
return ret;
}
/* FIXME: moved all the bits out here that are broken so the syntax
* stays clear */
/*
{
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}
,
#endif
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 = GST_VIDEO_BYTE1_MASK_24_INT;
g_mask = GST_VIDEO_BYTE2_MASK_24_INT;
b_mask = GST_VIDEO_BYTE3_MASK_24_INT break;
case 32:
endianness = G_BIG_ENDIAN;
r_mask = GST_VIDEO_BYTE1_MASK_32_INT;
g_mask = GST_VIDEO_BYTE2_MASK_32_INT;
b_mask = GST_VIDEO_BYTE3_MASK_32_INT 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 {
#endif
#endif
*/
static gboolean
gst_divxdec_negotiate (GstDivxDec * divxdec)
{
GstCaps *caps = NULL;
gint i;
gint par_num, par_den;
gboolean ret = FALSE;
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}
, {
0, 0, 0, 0, 0}
};
GST_DEBUG_OBJECT (divxdec, "fps %d/%d, PAR %d/%d",
divxdec->fps_n, divxdec->fps_d, divxdec->par_n, divxdec->par_d);
/* calculate par
* the info.aspect_* values reflect PAR;
* 0:0 is allowed and can be interpreted as 1:1, so correct for it */
par_num = divxdec->par_n;
par_den = divxdec->par_d;
if (par_num == 0 && par_den == 0) {
par_num = par_den = 1;
}
for (i = 0; fmt_list[i].fourcc != 0; i++) {
divxdec->csp = fmt_list[i].csp;
caps = gst_caps_new_simple ("video/x-raw-yuv",
"width", G_TYPE_INT, divxdec->width,
"height", G_TYPE_INT, divxdec->height,
"framerate", GST_TYPE_FRACTION, divxdec->fps_n, divxdec->fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, par_num, par_den,
"format", GST_TYPE_FOURCC, fmt_list[i].fourcc, NULL);
if (caps) {
if (gst_divxdec_setup (divxdec) &&
gst_pad_set_caps (divxdec->srcpad, caps)) {
divxdec->csp = fmt_list[i].csp;
divxdec->bpp = fmt_list[i].bpp;
divxdec->bitcnt = fmt_list[i].bitcnt;
ret = TRUE;
goto done;
}
gst_caps_unref (caps);
caps = NULL;
}
}
/* if we got here - it's not good */
done:
if (caps) {
gst_caps_unref (caps);
}
return ret;
}
static gboolean
gst_divxdec_connect (GstPad * pad, GstCaps * caps)
{
GstDivxDec *divxdec;
const GValue *par;
const GValue *fps;
gboolean ret = FALSE;
GstStructure *structure = gst_caps_get_structure (caps, 0);
divxdec = GST_DIVXDEC (gst_pad_get_parent (pad));
/* if there's something old around, remove it */
if (divxdec->handle) {
gst_divxdec_unset (divxdec);
}
/* if we get here, we know the input is divx. we
* only need to bother with the output colorspace */
gst_structure_get_int (structure, "width", &divxdec->width);
gst_structure_get_int (structure, "height", &divxdec->height);
gst_structure_get_int (structure, "divxversion", &divxdec->version);
/* get pixel aspect ratio if it's set */
par = gst_structure_get_value (structure, "pixel-aspect-ratio");
if (par) {
divxdec->par_n = gst_value_get_fraction_numerator (par),
divxdec->par_d = gst_value_get_fraction_denominator (par);
}
fps = gst_structure_get_value (structure, "framerate");
if (fps != NULL) {
divxdec->fps_n = gst_value_get_fraction_numerator (fps);
divxdec->fps_d = gst_value_get_fraction_denominator (fps);
} else {
divxdec->fps_n = -1;
}
ret = gst_divxdec_negotiate (divxdec);
gst_object_unref (divxdec);
return ret;
}
static GstStateChangeReturn
gst_divxdec_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = parent_class->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
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;
}
return gst_element_register (plugin, "divxdec",
GST_RANK_SECONDARY, GST_TYPE_DIVXDEC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
divxdec,
"DivX decoder",
plugin_init,
"5.03", GST_LICENSE_UNKNOWN, "divx4linux", "http://www.divx.com/");