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ext/wavpack/: put back wavpack - still needs porting

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Original commit message from CVS:
* ext/wavpack/gstwavpackcommon.h:
* ext/wavpack/gstwavpackdec.c: (gst_wavpack_dec_link),
(gst_wavpack_dec_wvclink), (gst_wavpack_dec_get_type),
(gst_wavpack_dec_base_init), (gst_wavpack_dec_dispose),
(gst_wavpack_dec_class_init), (gst_wavpack_dec_src_query),
(gst_wavpack_dec_init), (gst_wavpack_dec_setup_context),
(gst_wavpack_dec_format_samples), (gst_wavpack_dec_loop),
(gst_wavpack_dec_plugin_init):
* ext/wavpack/gstwavpackdec.h:
* ext/wavpack/gstwavpackparse.c: (gst_wavpack_parse_get_type),
(gst_wavpack_parse_base_init), (gst_wavpack_parse_dispose),
(gst_wavpack_parse_class_init), (gst_wavpack_parse_src_query),
(gst_wavpack_parse_src_event), (find_header), (find_sample),
(gst_wavpack_parse_seek), (gst_wavpack_parse_init),
(gst_wavpack_parse_handle_event), (gst_wavpack_parse_loop),
(gst_wavpack_parse_change_state), (gst_wavpack_parse_plugin_init):
* ext/wavpack/gstwavpackparse.h:
put back wavpack - still needs porting
This commit is contained in:
Thomas Vander Stichele 2005-11-25 18:15:51 +00:00
parent 0245479f3e
commit 4fbab01946
8 changed files with 1160 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
ext/wavpack/Makefile.am Normal file
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plugin_LTLIBRARIES = libgstwavpack.la
libgstwavpack_la_SOURCES = gstwavpack.c \
gstwavpackcommon.c \
gstwavpackparse.c \
gstwavpackdec.c
libgstwavpack_la_CFLAGS = $(GST_CFLAGS) $(WAVPACK_CFLAGS)
libgstwavpack_la_LIBADD = $(WAVPACK_LIBS)
libgstwavpack_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstwavpackparse.h gstwavpackdec.h gstwavpackcommon.h

40
ext/wavpack/gstwavpack.c Normal file
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/* GStreamer wavpack plugin
* (c) 2004 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpack.c: plugin loader
*
* 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 "gstwavpackparse.h"
#include "gstwavpackdec.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
return (gst_wavpack_parse_plugin_init (plugin)
&& gst_wavpack_dec_plugin_init (plugin));
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"wavpack",
"Wavpack lossless/lossy audio format handling",
plugin_init, VERSION, "LGPL", "gst-wavpack", "http://www.wavpack.com")

14
ext/wavpack/gstwavpackcommon.c Normal file
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#include "gstwavpackcommon.h"
#include <string.h>
gboolean
gst_wavpack_read_header (WavpackHeader * header, guint8 * buf)
{
g_memmove (header, buf, sizeof (WavpackHeader));
little_endian_to_native (header, WavpackHeaderFormat);
if (strncmp (header->ckID, "wvpk", 4))
return FALSE;
else
return TRUE;
}

4
ext/wavpack/gstwavpackcommon.h Normal file
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#include <gst/gst.h>
#include <wavpack/wavpack.h>
gboolean gst_wavpack_read_header (WavpackHeader *header, guint8 *buf);

406
ext/wavpack/gstwavpackdec.c Normal file
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/* GStreamer Wavpack plugin
* (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpackdec.c: raw Wavpack bitstream decoder
*
* 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.
*/
#include <gst/gst.h>
#include <math.h>
#include <string.h>
#include <wavpack/wavpack.h>
#include "gstwavpackdec.h"
#include "gstwavpackcommon.h"
/* Filter signals and args */
enum
{
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-wavpack, "
"width = (int) { 8, 16, 24, 32 }, "
"channels = (int) { 1, 2 }, "
"rate = (int) [ 8000, 96000 ], " "framed = (boolean) true")
);
static GstStaticPadTemplate wvc_sink_factory =
GST_STATIC_PAD_TEMPLATE ("wvcsink",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS ("audio/x-wavpack-correction, " "framed = (boolean) true")
);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"width = (int) { 8, 16, 24 }, "
"depth = (int) { 8, 16, 24 }, "
"channels = (int) { 1, 2 }, "
"rate = (int) [ 8000, 96000 ], "
"endianness = (int) LITTLE_ENDIAN, "
"signed = (boolean) true;"
"audio/x-raw-float, "
"width = (int) 32, "
"channels = (int) { 1, 2 }, "
"rate = (int) [ 8000, 96000 ], "
"endianness = (int) LITTLE_ENDIAN, " "buffer-frames = (int) 0")
);
static void gst_wavpack_dec_class_init (GstWavpackDecClass * klass);
static void gst_wavpack_dec_base_init (GstWavpackDecClass * klass);
static void gst_wavpack_dec_init (GstWavpackDec * wavpackdec);
static void gst_wavpack_dec_loop (GstElement * element);
static GstElementClass *parent = NULL;
static GstPadLinkReturn
gst_wavpack_dec_link (GstPad * pad, const GstCaps * caps)
{
GstWavpackDec *wavpackdec = GST_WAVPACK_DEC (gst_pad_get_parent (pad));
GstStructure *structure = gst_caps_get_structure (caps, 0);
GstCaps *srccaps;
gint bits;
if (!gst_caps_is_fixed (caps))
return GST_PAD_LINK_DELAYED;
gst_structure_get_int (structure, "rate",
(gint32 *) & wavpackdec->samplerate);
gst_structure_get_int (structure, "channels",
(gint *) & wavpackdec->channels);
gst_structure_get_int (structure, "width", &bits);
wavpackdec->width = bits;
if (bits != 32) {
srccaps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, wavpackdec->samplerate,
"channels", G_TYPE_INT, wavpackdec->channels,
"depth", G_TYPE_INT, bits,
"width", G_TYPE_INT, bits,
"endianness", G_TYPE_INT, LITTLE_ENDIAN,
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
} else {
srccaps = gst_caps_new_simple ("audio/x-raw-float",
"rate", G_TYPE_INT, wavpackdec->samplerate,
"channels", G_TYPE_INT, wavpackdec->channels,
"width", G_TYPE_INT, 32,
"endianness", G_TYPE_INT, LITTLE_ENDIAN,
"buffer-frames", G_TYPE_INT, 0, NULL);
}
gst_pad_set_explicit_caps (wavpackdec->srcpad, srccaps);
// blocks are usually 0.5 seconds long, assume that's always the case for now
wavpackdec->decodebuf =
(int32_t *) g_malloc ((wavpackdec->samplerate / 2) *
wavpackdec->channels * sizeof (int32_t));
return GST_PAD_LINK_OK;
}
static GstPadLinkReturn
gst_wavpack_dec_wvclink (GstPad * pad, const GstCaps * caps)
{
if (!gst_caps_is_fixed (caps))
return GST_PAD_LINK_DELAYED;
return GST_PAD_LINK_OK;
}
GType
gst_wavpack_dec_get_type (void)
{
static GType plugin_type = 0;
if (!plugin_type) {
static const GTypeInfo plugin_info = {
sizeof (GstWavpackDecClass),
(GBaseInitFunc) gst_wavpack_dec_base_init,
NULL,
(GClassInitFunc) gst_wavpack_dec_class_init,
NULL,
NULL,
sizeof (GstWavpackDec),
0,
(GInstanceInitFunc) gst_wavpack_dec_init,
};
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstWavpackDec", &plugin_info, 0);
}
return plugin_type;
}
static void
gst_wavpack_dec_base_init (GstWavpackDecClass * klass)
{
static GstElementDetails plugin_details = {
"WAVPACK decoder",
"Codec/Decoder/Audio",
"Decode Wavpack audio data",
"Arwed v. Merkatz <v.merkatz@gmx.net>"
};
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&wvc_sink_factory));
gst_element_class_set_details (element_class, &plugin_details);
}
static void
gst_wavpack_dec_dispose (GObject * object)
{
GstWavpackDec *wavpackdec = GST_WAVPACK_DEC (object);
g_free (wavpackdec->decodebuf);
G_OBJECT_CLASS (parent)->dispose (object);
}
static void
gst_wavpack_dec_class_init (GstWavpackDecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->dispose = gst_wavpack_dec_dispose;
}
static gboolean
gst_wavpack_dec_src_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value)
{
return gst_pad_query_default (pad, type, format, value);
}
static void
gst_wavpack_dec_init (GstWavpackDec * wavpackdec)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (wavpackdec);
wavpackdec->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
gst_pad_set_link_function (wavpackdec->sinkpad, gst_wavpack_dec_link);
wavpackdec->wvcsinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"wvcsink"), "wvcsink");
gst_pad_set_link_function (wavpackdec->wvcsinkpad, gst_wavpack_dec_wvclink);
wavpackdec->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"src"), "src");
gst_pad_use_explicit_caps (wavpackdec->srcpad);
gst_pad_set_query_function (wavpackdec->srcpad, gst_wavpack_dec_src_query);
gst_element_add_pad (GST_ELEMENT (wavpackdec), wavpackdec->sinkpad);
gst_element_add_pad (GST_ELEMENT (wavpackdec), wavpackdec->srcpad);
gst_element_add_pad (GST_ELEMENT (wavpackdec), wavpackdec->wvcsinkpad);
gst_element_set_loop_function (GST_ELEMENT (wavpackdec),
gst_wavpack_dec_loop);
wavpackdec->decodebuf = NULL;
wavpackdec->stream = (WavpackStream *) g_malloc0 (sizeof (WavpackStream));
wavpackdec->context = (WavpackContext *) g_malloc0 (sizeof (WavpackContext));
}
static void
gst_wavpack_dec_setup_context (GstWavpackDec * wavpackdec, guchar * data,
guchar * cdata)
{
WavpackContext *context = wavpackdec->context;
WavpackStream *stream = wavpackdec->stream;
memset (context, 0, sizeof (context));
context->open_flags = 0;
context->current_stream = 0;
context->num_streams = 1;
memset (stream, 0, sizeof (stream));
context->streams[0] = stream;
gst_wavpack_read_header (&stream->wphdr, data);
stream->blockbuff = data;
if (cdata) {
context->wvc_flag = TRUE;
gst_wavpack_read_header (&stream->wphdr, cdata);
stream->block2buff = cdata;
} else {
context->wvc_flag = FALSE;
}
unpack_init (context);
}
static GstBuffer *
gst_wavpack_dec_format_samples (GstWavpackDec * wavpackdec, int32_t * samples,
guint num_samples)
{
GstBuffer *buf;
gint i;
guint8 *dst;
int32_t temp;
buf =
gst_buffer_new_and_alloc (num_samples * wavpackdec->width / 8 *
wavpackdec->channels);
dst = (guint8 *) GST_BUFFER_DATA (buf);
switch (wavpackdec->width) {
case 8:
for (i = 0; i < num_samples * wavpackdec->channels; ++i)
*dst++ = *samples++ + 128;
break;
case 16:
for (i = 0; i < num_samples * wavpackdec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
}
break;
case 24:
for (i = 0; i < num_samples * wavpackdec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
*dst++ = (guint8) (temp >> 16);
}
break;
case 32:
for (i = 0; i < num_samples * wavpackdec->channels; ++i) {
*dst++ = (guint8) (temp = *samples++);
*dst++ = (guint8) (temp >> 8);
*dst++ = (guint8) (temp >> 16);
*dst++ = (guint8) (temp >> 24);
}
break;
default:
break;
}
return buf;
}
static void
gst_wavpack_dec_loop (GstElement * element)
{
GstWavpackDec *wavpackdec = GST_WAVPACK_DEC (element);
GstData *data, *cdata = NULL;
GstBuffer *buf, *outbuf, *cbuf = NULL;
gboolean got_event = FALSE;
if (!gst_pad_is_linked (wavpackdec->sinkpad)) {
return;
}
/*
if (!gst_pad_is_linked (wavpackdec->wvcsinkpad)) {
return;
}
*/
data = gst_pad_pull (wavpackdec->sinkpad);
if (GST_IS_EVENT (data)) {
GstEvent *event = GST_EVENT (data);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
gst_event_unref (event);
gst_pad_push (wavpackdec->srcpad,
GST_DATA (gst_event_new (GST_EVENT_EOS)));
gst_element_set_eos (element);
break;
default:
gst_pad_event_default (wavpackdec->srcpad, event);
break;
}
got_event = TRUE;
}
if (gst_pad_is_linked (wavpackdec->wvcsinkpad)) {
cdata = gst_pad_pull (wavpackdec->wvcsinkpad);
if (GST_IS_EVENT (cdata)) {
GstEvent *event = GST_EVENT (cdata);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
gst_event_unref (event);
gst_pad_push (wavpackdec->srcpad,
GST_DATA (gst_event_new (GST_EVENT_EOS)));
gst_element_set_eos (element);
break;
default:
gst_pad_event_default (wavpackdec->srcpad, event);
break;
}
got_event = TRUE;
} else {
cbuf = GST_BUFFER (cdata);
}
}
if (got_event)
return;
buf = GST_BUFFER (data);
gst_wavpack_dec_setup_context (wavpackdec, GST_BUFFER_DATA (buf),
cbuf ? GST_BUFFER_DATA (cbuf) : NULL);
unpack_samples (wavpackdec->context, wavpackdec->decodebuf,
wavpackdec->context->streams[0]->wphdr.block_samples);
outbuf =
gst_wavpack_dec_format_samples (wavpackdec, wavpackdec->decodebuf,
wavpackdec->context->streams[0]->wphdr.block_samples);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
gst_buffer_unref (buf);
gst_pad_push (wavpackdec->srcpad, GST_DATA (outbuf));
}
gboolean
gst_wavpack_dec_plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "wavpackdec",
GST_RANK_PRIMARY, GST_TYPE_WAVPACK_DEC);
}

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ext/wavpack/gstwavpackdec.h Normal file
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/* GStreamer Wavpack plugin
* (c) 2004 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpackdec.h: raw Wavpack bitstream decoder
*
* 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.
*/
#ifndef __GST_WAVPACK_DEC_H__
#define __GST_WAVPACK_DEC_H__
#include <gst/gst.h>
#include <wavpack/wavpack.h>
G_BEGIN_DECLS
/* #define's don't like whitespacey bits */
#define GST_TYPE_WAVPACK_DEC \
(gst_wavpack_dec_get_type())
#define GST_WAVPACK_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPACK_DEC,GstWavpackDec))
#define GST_WAVPACK_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPACK_DEC,GstWavpackDec))
#define GST_IS_WAVPACK_DEC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPACK_DEC))
#define GST_IS_WAVPACK_DEC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPACK_DEC))
typedef struct _GstWavpackDec GstWavpackDec;
typedef struct _GstWavpackDecClass GstWavpackDecClass;
struct _GstWavpackDec
{
GstElement element;
GstPad *sinkpad, *srcpad;
GstPad *wvcsinkpad;
WavpackContext *context;
int32_t *decodebuf;
WavpackStream *stream;
guint32 samplerate;
guint channels;
guint width;
long frame_length;
guchar *decdata;
long *cache;
};
struct _GstWavpackDecClass
{
GstElementClass parent;
};
GType gst_wavpack_dec_get_type (void);
gboolean gst_wavpack_dec_plugin_init (GstPlugin *plugin);
G_END_DECLS
#endif /* __GST_WAVPACK_DEC_H__ */

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ext/wavpack/gstwavpackparse.c Normal file
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/* GStreamer wavpack plugin
* (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpackparse.c: wavpack file parser
*
* 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.
*/
#include <gst/gst.h>
#include <math.h>
#include <string.h>
#include <wavpack/wavpack.h>
#include "gstwavpackparse.h"
#include "gstwavpackcommon.h"
GST_DEBUG_CATEGORY_STATIC (gst_wavpack_parse_debug);
#define GST_CAT_DEFAULT gst_wavpack_parse_debug
/* Filter signals and args */
enum
{
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-wavpack, "
"framed = (boolean) false; "
"audio/x-wavpack-correction, " "framed = (boolean) false")
);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("audio/x-wavpack, "
"width = (int) { 8, 16, 24 }, "
"channels = (int) { 1, 2 }, "
"rate = (int) [ 8000, 96000 ], " "framed = (boolean) true")
);
static GstStaticPadTemplate wvc_src_factory = GST_STATIC_PAD_TEMPLATE ("wvcsrc",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("audio/x-wavpack-correction, " "framed = (boolean) true")
);
static void gst_wavpack_parse_class_init (GstWavpackParseClass * klass);
static void gst_wavpack_parse_base_init (GstWavpackParseClass * klass);
static void gst_wavpack_parse_init (GstWavpackParse * wavpackparse);
static void gst_wavpack_parse_handle_event (GstElement * element);
static void gst_wavpack_parse_loop (GstElement * element);
static GstElementStateReturn gst_wavpack_parse_change_state (GstElement *
element);
static GstElementClass *parent = NULL;
GType
gst_wavpack_parse_get_type (void)
{
static GType plugin_type = 0;
if (!plugin_type) {
static const GTypeInfo plugin_info = {
sizeof (GstWavpackParseClass),
(GBaseInitFunc) gst_wavpack_parse_base_init,
NULL,
(GClassInitFunc) gst_wavpack_parse_class_init,
NULL,
NULL,
sizeof (GstWavpackParse),
0,
(GInstanceInitFunc) gst_wavpack_parse_init,
};
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstWavpackParse", &plugin_info, 0);
}
return plugin_type;
}
static void
gst_wavpack_parse_base_init (GstWavpackParseClass * klass)
{
static GstElementDetails plugin_details = {
"Wavpack file parser",
"Codec/Demuxer/Audio",
"Parses Wavpack files",
"Arwed v. Merkatz <v.merkatz@gmx.net>"
};
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&wvc_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details (element_class, &plugin_details);
}
static void
gst_wavpack_parse_dispose (GObject * object)
{
G_OBJECT_CLASS (parent)->dispose (object);
}
static void
gst_wavpack_parse_class_init (GstWavpackParseClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->dispose = gst_wavpack_parse_dispose;
gstelement_class->change_state = gst_wavpack_parse_change_state;
}
static gboolean
gst_wavpack_parse_src_query (GstPad * pad, GstQueryType type,
GstFormat * format, gint64 * value)
{
GstWavpackParse *wavpackparse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
if ((type == GST_QUERY_TOTAL) && (*format == GST_FORMAT_TIME)) {
if (wavpackparse->total_samples == 0) {
*value = 0;
return FALSE;
}
*value =
((gdouble) wavpackparse->total_samples /
(gdouble) wavpackparse->samplerate) * GST_SECOND;
return TRUE;
} else if ((type == GST_QUERY_POSITION) && (*format == GST_FORMAT_TIME)) {
*value = wavpackparse->timestamp;
return TRUE;
} else {
return gst_pad_query_default (pad, type, format, value);
}
return FALSE;
}
static gboolean
gst_wavpack_parse_src_event (GstPad * pad, GstEvent * event)
{
GstWavpackParse *wavpackparse;
GstSeekType method;
GstFormat format;
gboolean need_flush;
gint64 offset, dest;
wavpackparse = GST_WAVPACK_PARSE (gst_pad_get_parent (pad));
if (GST_EVENT_TYPE (event) != GST_EVENT_SEEK) {
return gst_pad_send_event (GST_PAD_PEER (wavpackparse->sinkpad), event);
}
format = GST_EVENT_SEEK_FORMAT (event);
offset = GST_EVENT_SEEK_OFFSET (event);
method = GST_EVENT_SEEK_METHOD (event);
need_flush = GST_EVENT_SEEK_FLAGS (event) & GST_SEEK_FLAG_FLUSH;
gst_data_unref (GST_DATA (event));
event = NULL;
if (offset < 0 || method != GST_SEEK_METHOD_SET)
return FALSE;
if (format == GST_FORMAT_TIME) {
dest = offset * wavpackparse->samplerate / GST_SECOND;
} else if (format == GST_FORMAT_DEFAULT) {
dest = offset;
} else {
return FALSE;
}
wavpackparse->need_discont = TRUE;
wavpackparse->need_flush = need_flush;
wavpackparse->seek_pending = TRUE;
wavpackparse->seek_offset = dest;
return TRUE;
}
#define BUFSIZE 4096
static guint64
find_header (GstByteStream * bs, guint64 filepos, WavpackHeader * wphdr)
{
guint64 pos = filepos;
gst_bytestream_seek (bs, filepos, GST_SEEK_METHOD_SET);
while (1) {
guint8 *data, *cur;
gint read;
read = gst_bytestream_peek_bytes (bs, &data, BUFSIZE);
while (read != BUFSIZE) {
guint remaining;
GstEvent *event = NULL;
gst_bytestream_get_status (bs, &remaining, &event);
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
gst_event_unref (event);
return gst_bytestream_length (bs);
}
gst_event_unref (event);
read = gst_bytestream_peek_bytes (bs, &data, BUFSIZE);
continue;
}
cur = data;
do {
if (cur[0] == 'w' && cur[1] == 'v' && cur[2] == 'p' && cur[3] == 'k') {
gst_wavpack_read_header (wphdr, cur);
return pos + (cur - data);
}
cur++;
} while ((cur - data) < (BUFSIZE - sizeof (WavpackHeader)));
gst_bytestream_flush_fast (bs, BUFSIZE - sizeof (WavpackHeader));
pos += BUFSIZE - sizeof (WavpackHeader);
}
/* never reached */
return gst_bytestream_length (bs);
}
/* find the position of sample in the input bytestream, adapted from the
* original wavpack find_sample function */
static guint64
find_sample (GstWavpackParse * wavpackparse, guint32 sample)
{
WavpackHeader wphdr;
guint64 file_pos1 = 0, file_pos2 = gst_bytestream_length (wavpackparse->bs);
guint64 sample_pos1 = 0, sample_pos2 = wavpackparse->total_samples;
double ratio = 0.96;
int file_skip = 0;
if (sample >= wavpackparse->total_samples) {
return gst_bytestream_length (wavpackparse->bs);
}
while (1) {
double bytes_per_sample;
guint64 seek_pos;
bytes_per_sample = file_pos2 - file_pos1;
bytes_per_sample /= sample_pos2 - sample_pos1;
seek_pos = file_pos1 + (file_skip ? 32 : 0);
seek_pos += (guint64) (bytes_per_sample * (sample - sample_pos1) * ratio);
seek_pos = find_header (wavpackparse->bs, seek_pos, &wphdr);
if (seek_pos == gst_bytestream_length (wavpackparse->bs)
|| seek_pos >= file_pos2) {
if (ratio > 0.0) {
if ((ratio -= 0.24) < 0.0)
ratio = 0.0;
} else {
return gst_bytestream_length (wavpackparse->bs);
}
} else if (wphdr.block_index > sample) {
sample_pos2 = wphdr.block_index;
file_pos2 = seek_pos;
} else if (wphdr.block_index + wphdr.block_samples <= sample) {
if (seek_pos == file_pos1)
file_skip = 1;
else {
sample_pos1 = wphdr.block_index;
file_pos1 = seek_pos;
}
} else {
return seek_pos;
}
}
}
static void
gst_wavpack_parse_seek (GstWavpackParse * wavpackparse)
{
guint8 *data;
gint num;
guint remaining;
WavpackHeader *header = g_malloc (sizeof (WavpackHeader));
guint64 offset = find_sample (wavpackparse, wavpackparse->seek_offset);
gst_bytestream_seek (wavpackparse->bs, offset, GST_SEEK_METHOD_SET);
if (offset == gst_bytestream_length (wavpackparse->bs)) {
/* seek failed or went beyond the end, go EOS */
wavpackparse->timestamp =
((gdouble) wavpackparse->total_samples /
(gdouble) wavpackparse->samplerate) * GST_SECOND;
return;
}
num =
gst_bytestream_peek_bytes (wavpackparse->bs, &data,
sizeof (WavpackHeader));
while (num != sizeof (WavpackHeader)) {
GstEvent *event = NULL;
gst_bytestream_get_status (wavpackparse->bs, &remaining, &event);
if (!event) {
return;
}
gst_event_unref (event);
num =
gst_bytestream_peek_bytes (wavpackparse->bs, &data,
sizeof (WavpackHeader));
continue;
}
gst_wavpack_read_header (header, data);
if (wavpackparse->need_flush) {
GstEvent *flush = gst_event_new (GST_EVENT_FLUSH);
gst_pad_push (wavpackparse->srcpad, GST_DATA (flush));
wavpackparse->need_flush = FALSE;
}
wavpackparse->need_discont = TRUE;
wavpackparse->timestamp =
((gdouble) header->block_index / (gdouble) wavpackparse->samplerate) *
GST_SECOND;
}
static void
gst_wavpack_parse_init (GstWavpackParse * wavpackparse)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (wavpackparse);
wavpackparse->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
gst_element_add_pad (GST_ELEMENT (wavpackparse), wavpackparse->sinkpad);
gst_element_set_loop_function (GST_ELEMENT (wavpackparse),
gst_wavpack_parse_loop);
GST_FLAG_SET (wavpackparse, GST_ELEMENT_EVENT_AWARE);
}
static void
gst_wavpack_parse_handle_event (GstElement * element)
{
GstWavpackParse *wavpackparse = GST_WAVPACK_PARSE (element);
GstEvent *event = NULL;
guint remaining;
gst_bytestream_get_status (wavpackparse->bs, &remaining, &event);
if (event) {
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
if (GST_IS_PAD (wavpackparse->srcpad)
&& gst_pad_is_active (wavpackparse->srcpad))
gst_pad_push (wavpackparse->srcpad, GST_DATA (event));
gst_element_set_eos (element);
} else if (GST_EVENT_TYPE (event) == GST_EVENT_DISCONTINUOUS) {
if (GST_IS_PAD (wavpackparse->srcpad)
&& gst_pad_is_active (wavpackparse->srcpad))
gst_pad_event_default (wavpackparse->srcpad, event);
} else {
gst_event_unref (event);
}
} else {
GST_ELEMENT_ERROR (element, STREAM, DEMUX, ("couldn't read wavpack header"),
(NULL));
}
}
static void
gst_wavpack_parse_loop (GstElement * element)
{
GstWavpackParse *wavpackparse = GST_WAVPACK_PARSE (element);
guint8 *data;
gint num;
GstBuffer *buf;
WavpackHeader *header = g_malloc (sizeof (WavpackHeader));
if (wavpackparse->seek_pending) {
gst_wavpack_parse_seek (wavpackparse);
wavpackparse->need_discont = TRUE;
wavpackparse->seek_pending = FALSE;
}
if (wavpackparse->need_discont) {
if (GST_IS_PAD (wavpackparse->srcpad)
&& gst_pad_is_active (wavpackparse->srcpad))
gst_pad_push (wavpackparse->srcpad,
GST_DATA (gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
wavpackparse->timestamp, GST_FORMAT_UNDEFINED)));
wavpackparse->need_discont = FALSE;
}
num =
gst_bytestream_peek_bytes (wavpackparse->bs, &data,
sizeof (WavpackHeader));
if (num != sizeof (WavpackHeader)) {
gst_wavpack_parse_handle_event (element);
return;
}
gst_wavpack_read_header (header, data);
num = gst_bytestream_peek_bytes (wavpackparse->bs, &data, header->ckSize + 8);
if (num != header->ckSize + 8) {
gst_wavpack_parse_handle_event (element);
return;
}
if (!GST_IS_PAD (wavpackparse->srcpad)) {
guchar *bufptr = data + sizeof (WavpackHeader);
GstCaps *caps = NULL;
WavpackMetadata meta;
while (read_metadata_buff (&meta, data, &bufptr)) {
if (meta.id == ID_WVC_BITSTREAM) {
caps = gst_caps_new_simple ("audio/x-wavpack-correction",
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
wavpackparse->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_GET_CLASS (wavpackparse), "wvcsrc"), "wvcsrc");
} else if (meta.id == ID_RIFF_HEADER) {
WaveHeader *wheader = g_malloc (sizeof (WaveHeader));
// skip RiffChunkHeader and ChunkHeader
g_memmove (wheader, meta.data + 20, sizeof (WaveHeader));
little_endian_to_native (wheader, WaveHeaderFormat);
wavpackparse->samplerate = wheader->SampleRate;
wavpackparse->channels = wheader->NumChannels;
wavpackparse->total_samples = header->total_samples;
caps = gst_caps_new_simple ("audio/x-wavpack",
"width", G_TYPE_INT, wheader->BitsPerSample,
"channels", G_TYPE_INT, wavpackparse->channels,
"rate", G_TYPE_INT, wavpackparse->samplerate,
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
wavpackparse->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_GET_CLASS (wavpackparse), "src"), "src");
}
}
gst_pad_use_explicit_caps (wavpackparse->srcpad);
gst_pad_set_query_function (wavpackparse->srcpad,
gst_wavpack_parse_src_query);
gst_pad_set_event_function (wavpackparse->srcpad,
gst_wavpack_parse_src_event);
gst_element_add_pad (GST_ELEMENT (wavpackparse), wavpackparse->srcpad);
gst_pad_set_explicit_caps (wavpackparse->srcpad, caps);
}
buf = gst_buffer_new_and_alloc (header->ckSize + 8);
memcpy (GST_BUFFER_DATA (buf), data, header->ckSize + 8);
gst_bytestream_flush_fast (wavpackparse->bs, header->ckSize + 8);
wavpackparse->timestamp =
((gdouble) header->block_index / (gdouble) wavpackparse->samplerate) *
GST_SECOND;
GST_BUFFER_TIMESTAMP (buf) = wavpackparse->timestamp;
GST_BUFFER_DURATION (buf) =
((gdouble) header->block_samples / (gdouble) wavpackparse->samplerate) *
GST_SECOND;
gst_pad_push (wavpackparse->srcpad, GST_DATA (buf));
}
static GstElementStateReturn
gst_wavpack_parse_change_state (GstElement * element)
{
GstWavpackParse *wavpackparse = GST_WAVPACK_PARSE (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_READY_TO_PAUSED:
wavpackparse->need_discont = TRUE;
wavpackparse->bs = gst_bytestream_new (wavpackparse->sinkpad);
break;
case GST_STATE_PAUSED_TO_READY:
gst_bytestream_destroy (wavpackparse->bs);
wavpackparse->seek_pending = FALSE;
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent)->change_state)
return GST_ELEMENT_CLASS (parent)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_wavpack_parse_plugin_init (GstPlugin * plugin)
{
if (!gst_library_load ("gstbytestream"))
return FALSE;
if (!gst_element_register (plugin, "wavpackparse",
GST_RANK_PRIMARY, GST_TYPE_WAVPACK_PARSE)) {
return FALSE;
}
GST_DEBUG_CATEGORY_INIT (gst_wavpack_parse_debug, "wavpackparse", 0,
"wavpack file parser");
return TRUE;
}

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@ -0,0 +1,75 @@
/* GStreamer wavpack plugin
* (c) 2005 Arwed v. Merkatz <v.merkatz@gmx.net>
*
* gstwavpackparse.h: wavpack file parser
*
* 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.
*/
#ifndef __GST_WAVPACK_PARSE_H__
#define __GST_WAVPACK_PARSE_H__
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
G_BEGIN_DECLS
/* #define's don't like whitespacey bits */
#define GST_TYPE_WAVPACK_PARSE \
(gst_wavpack_parse_get_type())
#define GST_WAVPACK_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVPACK_PARSE,GstWavpackParse))
#define GST_WAVPACK_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVPACK_PARSE,GstWavpackParse))
#define GST_IS_WAVPACK_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVPACK_PARSE))
#define GST_IS_WAVPACK_PARSE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVPACK_PARSE))
typedef struct _GstWavpackParse GstWavpackParse;
typedef struct _GstWavpackParseClass GstWavpackParseClass;
struct _GstWavpackParse
{
GstElement element;
GstPad *sinkpad, *srcpad;
GstByteStream* bs;
guint32 samplerate;
guint32 channels;
guint32 total_samples;
guint64 timestamp;
guint64 seek_offset;
gboolean seek_pending;
gboolean need_discont;
gboolean need_flush;
};
struct _GstWavpackParseClass
{
GstElementClass parent;
};
GType gst_wavpack_parse_get_type (void);
gboolean gst_wavpack_parse_plugin_init (GstPlugin *plugin);
G_END_DECLS
#endif /* __GST_WAVPACK_PARSE_H__ */