mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-14 05:12:09 +00:00
fd8b04a8e7
Original commit message from CVS: Reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net> * gst/tta/gstttaparse.c: (gst_tta_src_event): Fix gcc-2.95 compile (#163485).
421 lines
13 KiB
C
421 lines
13 KiB
C
/* GStreamer TTA plugin
|
|
* (c) 2004 Arwed v. Merkatz <v.merkatz@gmx.net>
|
|
*
|
|
* gstttaparse.c: TTA 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 "gstttaparse.h"
|
|
#include "ttadec.h"
|
|
#include "crc32.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_tta_parse_debug);
|
|
#define GST_CAT_DEFAULT gst_tta_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-ttafile")
|
|
);
|
|
|
|
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("audio/x-tta, "
|
|
"width = (int) { 8, 16, 24 }, "
|
|
"channels = (int) { 1, 2 }, " "rate = (int) [ 8000, 96000 ]")
|
|
);
|
|
|
|
static void gst_tta_parse_class_init (GstTtaParseClass * klass);
|
|
static void gst_tta_parse_base_init (GstTtaParseClass * klass);
|
|
static void gst_tta_parse_init (GstTtaParse * ttaparse);
|
|
|
|
static void gst_tta_parse_chain (GstPad * pad, GstData * in);
|
|
|
|
static GstElementClass *parent = NULL;
|
|
|
|
GType
|
|
gst_tta_parse_get_type (void)
|
|
{
|
|
static GType plugin_type = 0;
|
|
|
|
if (!plugin_type) {
|
|
static const GTypeInfo plugin_info = {
|
|
sizeof (GstTtaParseClass),
|
|
(GBaseInitFunc) gst_tta_parse_base_init,
|
|
NULL,
|
|
(GClassInitFunc) gst_tta_parse_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstTtaParse),
|
|
0,
|
|
(GInstanceInitFunc) gst_tta_parse_init,
|
|
};
|
|
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
|
|
"GstTtaParse", &plugin_info, 0);
|
|
}
|
|
return plugin_type;
|
|
}
|
|
|
|
static void
|
|
gst_tta_parse_base_init (GstTtaParseClass * klass)
|
|
{
|
|
static GstElementDetails plugin_details = {
|
|
"TTA file parser",
|
|
"Codec/Demuxer/Audio",
|
|
"Parses TTA 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 (&sink_factory));
|
|
gst_element_class_set_details (element_class, &plugin_details);
|
|
}
|
|
|
|
static void
|
|
gst_tta_parse_dispose (GObject * object)
|
|
{
|
|
GstTtaParse *ttaparse = GST_TTA_PARSE (object);
|
|
|
|
g_free (ttaparse->index);
|
|
|
|
G_OBJECT_CLASS (parent)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_tta_parse_class_init (GstTtaParseClass * 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_tta_parse_dispose;
|
|
}
|
|
|
|
static gboolean
|
|
gst_tta_src_query (GstPad * pad, GstQueryType type,
|
|
GstFormat * format, gint64 * value)
|
|
{
|
|
GstTtaParse *ttaparse = GST_TTA_PARSE (gst_pad_get_parent (pad));
|
|
|
|
if (type == GST_QUERY_TOTAL) {
|
|
if (*format == GST_FORMAT_TIME) {
|
|
if ((ttaparse->data_length == 0) || (ttaparse->samplerate == 0)) {
|
|
*value = 0;
|
|
return FALSE;
|
|
}
|
|
*value =
|
|
((gdouble) ttaparse->data_length / (gdouble) ttaparse->samplerate) *
|
|
GST_SECOND;
|
|
GST_DEBUG_OBJECT (ttaparse, "got queried for time, returned %lli",
|
|
*value);
|
|
return TRUE;
|
|
}
|
|
} else {
|
|
return gst_pad_query_default (pad, type, format, value);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_tta_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstTtaParse *ttaparse = GST_TTA_PARSE (gst_pad_get_parent (pad));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
if (GST_EVENT_SEEK_FORMAT (event) == GST_FORMAT_TIME) {
|
|
GstEvent *seek_event;
|
|
guint64 time;
|
|
guint64 seek_frame;
|
|
guint64 seekpos;
|
|
|
|
time = GST_EVENT_SEEK_OFFSET (event);
|
|
seek_frame = time / (FRAME_TIME * 1000000000);
|
|
seekpos = ttaparse->index[seek_frame].pos;
|
|
|
|
GST_DEBUG_OBJECT (ttaparse, "seeking to %u", (guint) seekpos);
|
|
seek_event =
|
|
gst_event_new_seek (GST_FORMAT_BYTES | GST_SEEK_METHOD_SET |
|
|
GST_SEEK_FLAG_ACCURATE, seekpos);
|
|
gst_event_unref (event);
|
|
if (gst_pad_send_event (GST_PAD_PEER (ttaparse->sinkpad), seek_event)) {
|
|
gst_pad_event_default (ttaparse->srcpad,
|
|
gst_event_new (GST_EVENT_FLUSH));
|
|
return TRUE;
|
|
} else {
|
|
GST_LOG_OBJECT (ttaparse, "seek failed");
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
return gst_pad_send_event (pad, event);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
return gst_pad_send_event (pad, event);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_tta_parse_init (GstTtaParse * ttaparse)
|
|
{
|
|
GstElementClass *klass = GST_ELEMENT_GET_CLASS (ttaparse);
|
|
|
|
ttaparse->sinkpad =
|
|
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
|
|
"sink"), "sink");
|
|
|
|
ttaparse->srcpad =
|
|
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
|
|
"src"), "src");
|
|
gst_pad_use_explicit_caps (ttaparse->srcpad);
|
|
gst_pad_set_query_function (ttaparse->srcpad, gst_tta_src_query);
|
|
gst_pad_set_event_function (ttaparse->srcpad, gst_tta_src_event);
|
|
|
|
gst_element_add_pad (GST_ELEMENT (ttaparse), ttaparse->sinkpad);
|
|
gst_element_add_pad (GST_ELEMENT (ttaparse), ttaparse->srcpad);
|
|
gst_pad_set_chain_function (ttaparse->sinkpad, gst_tta_parse_chain);
|
|
|
|
ttaparse->silent = FALSE;
|
|
ttaparse->header_parsed = FALSE;
|
|
ttaparse->partialbuf = NULL;
|
|
ttaparse->seek_ok = FALSE;
|
|
ttaparse->current_frame = 0;
|
|
ttaparse->data_length = 0;
|
|
ttaparse->samplerate = 0;
|
|
|
|
GST_FLAG_SET (ttaparse, GST_ELEMENT_EVENT_AWARE);
|
|
}
|
|
|
|
static void
|
|
gst_tta_handle_event (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstEvent *event = GST_EVENT (buffer);
|
|
GstTtaParse *ttaparse = GST_TTA_PARSE (gst_pad_get_parent (pad));
|
|
|
|
GST_DEBUG_OBJECT (ttaparse, "got some event");
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_DISCONTINUOUS:
|
|
{
|
|
GstEvent *discont;
|
|
guint64 offset = GST_EVENT_DISCONT_OFFSET (event, 0).value;
|
|
int i;
|
|
|
|
GST_DEBUG_OBJECT (ttaparse, "discont with offset: %u", offset);
|
|
for (i = 0; i < ttaparse->num_frames; i++) {
|
|
if (offset == ttaparse->index[i].pos) {
|
|
GST_DEBUG_OBJECT (ttaparse, "setting current frame to %i", i);
|
|
discont = gst_event_new_discontinuous (FALSE,
|
|
GST_FORMAT_TIME, ttaparse->index[i].time, NULL);
|
|
gst_event_unref (event);
|
|
gst_buffer_unref (ttaparse->partialbuf);
|
|
ttaparse->partialbuf = NULL;
|
|
ttaparse->current_frame = i;
|
|
gst_pad_event_default (pad, gst_event_new (GST_EVENT_FLUSH));
|
|
gst_pad_event_default (pad, discont);
|
|
GST_DEBUG_OBJECT (ttaparse, "sent discont event");
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
gst_pad_event_default (pad, event);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_tta_parse_chain (GstPad * pad, GstData * in)
|
|
{
|
|
GstTtaParse *ttaparse;
|
|
GstBuffer *outbuf, *buf = GST_BUFFER (in);
|
|
guchar *data;
|
|
gint i;
|
|
guint64 size, offset = 0;
|
|
GstCaps *caps;
|
|
|
|
g_return_if_fail (GST_IS_PAD (pad));
|
|
g_return_if_fail (buf != NULL);
|
|
|
|
ttaparse = GST_TTA_PARSE (GST_OBJECT_PARENT (pad));
|
|
g_return_if_fail (GST_IS_TTA_PARSE (ttaparse));
|
|
|
|
if (GST_IS_EVENT (buf)) {
|
|
gst_tta_handle_event (pad, buf);
|
|
return;
|
|
}
|
|
|
|
if (ttaparse->partialbuf) {
|
|
GstBuffer *newbuf;
|
|
|
|
newbuf = gst_buffer_merge (ttaparse->partialbuf, buf);
|
|
gst_buffer_unref (buf);
|
|
gst_buffer_unref (ttaparse->partialbuf);
|
|
ttaparse->partialbuf = newbuf;
|
|
} else {
|
|
ttaparse->partialbuf = buf;
|
|
}
|
|
|
|
size = GST_BUFFER_SIZE (ttaparse->partialbuf);
|
|
data = GST_BUFFER_DATA (ttaparse->partialbuf);
|
|
if (!ttaparse->header_parsed) {
|
|
if ((*data == 'T') && (*(data + 1) == 'T') && (*(data + 2) == 'A')) {
|
|
double frame_length;
|
|
int num_frames;
|
|
guint32 datasize = 0;
|
|
guint32 crc;
|
|
|
|
offset = offset + 4;
|
|
offset = offset + 2;
|
|
ttaparse->channels = GST_READ_UINT16_LE (data + offset);
|
|
offset = offset + 2;
|
|
ttaparse->bits = GST_READ_UINT16_LE (data + offset);
|
|
offset += 2;
|
|
ttaparse->samplerate = GST_READ_UINT32_LE (data + offset);
|
|
frame_length = FRAME_TIME * ttaparse->samplerate;
|
|
offset += 4;
|
|
ttaparse->data_length = GST_READ_UINT32_LE (data + offset);
|
|
offset += 4;
|
|
num_frames = (ttaparse->data_length / frame_length) + 1;
|
|
crc = crc32 (data, 18);
|
|
if (crc != GST_READ_UINT32_LE (data + offset)) {
|
|
GST_WARNING_OBJECT (ttaparse, "Header CRC wrong!");
|
|
}
|
|
offset += 4;
|
|
GST_INFO_OBJECT (ttaparse,
|
|
"channels: %u, bits: %u, samplerate: %u, data_length: %u, num_frames: %u",
|
|
ttaparse->channels, ttaparse->bits, ttaparse->samplerate,
|
|
ttaparse->data_length, num_frames);
|
|
ttaparse->index =
|
|
(GstTtaIndex *) g_malloc (num_frames * sizeof (GstTtaIndex));
|
|
ttaparse->num_frames = num_frames;
|
|
for (i = 0; i < num_frames; i++) {
|
|
ttaparse->index[i].size = GST_READ_UINT32_LE (data + offset);
|
|
ttaparse->index[i].pos = GST_BUFFER_OFFSET (ttaparse->partialbuf) + (num_frames) * 4 + 4 + datasize + 22; // 22 == header size, +4 for the TTA1
|
|
ttaparse->index[i].time = i * FRAME_TIME * 1000000000;
|
|
offset += 4;
|
|
datasize += ttaparse->index[i].size;
|
|
}
|
|
GST_DEBUG_OBJECT (ttaparse, "Datasize: %u", datasize);
|
|
crc = crc32 (data + 22, num_frames * 4);
|
|
if (crc != GST_READ_UINT32_LE (data + offset)) {
|
|
GST_WARNING_OBJECT (ttaparse, "Seek table CRC wrong!");
|
|
} else {
|
|
ttaparse->seek_ok = TRUE;
|
|
/*
|
|
g_print("allowing seeking!\n");
|
|
g_print("dumping index:\n");
|
|
for (i = 0; i < ttaparse->num_frames; i++) {
|
|
g_print("frame %u: offset = %llu, time=%llu, size=%u\n",
|
|
i,
|
|
ttaparse->index[i].pos,
|
|
ttaparse->index[i].time,
|
|
ttaparse->index[i].size);
|
|
}
|
|
*/
|
|
}
|
|
offset += 4;
|
|
ttaparse->header_parsed = TRUE;
|
|
caps = gst_caps_new_simple ("audio/x-tta",
|
|
"width", G_TYPE_INT, ttaparse->bits,
|
|
"channels", G_TYPE_INT, ttaparse->channels,
|
|
"rate", G_TYPE_INT, ttaparse->samplerate, NULL);
|
|
gst_pad_set_explicit_caps (ttaparse->srcpad, caps);
|
|
}
|
|
}
|
|
|
|
i = ttaparse->current_frame;
|
|
while (size - offset >= ttaparse->index[i].size) {
|
|
guint32 crc;
|
|
|
|
crc = crc32 (data + offset, ttaparse->index[i].size - 4);
|
|
if (crc != GST_READ_UINT32_LE (data + offset + ttaparse->index[i].size - 4)) {
|
|
GST_WARNING_OBJECT (ttaparse, "Frame %u corrupted :(", i);
|
|
GST_WARNING_OBJECT (ttaparse, "calculated crc: %u, got crc: %u", crc,
|
|
GST_READ_UINT32_LE (data + offset + ttaparse->index[i].size - 4));
|
|
}
|
|
outbuf =
|
|
gst_buffer_create_sub (ttaparse->partialbuf, offset,
|
|
ttaparse->index[i].size - 4);
|
|
GST_BUFFER_TIMESTAMP (outbuf) = ttaparse->index[i].time;
|
|
if (ttaparse->current_frame + 1 == ttaparse->num_frames) {
|
|
guint32 samples =
|
|
ttaparse->data_length % (gint64) (ttaparse->samplerate * FRAME_TIME);
|
|
gdouble frametime = (gdouble) samples / (gdouble) ttaparse->samplerate;
|
|
|
|
GST_BUFFER_DURATION (outbuf) = (guint64) (frametime * GST_SECOND);
|
|
} else {
|
|
GST_BUFFER_DURATION (outbuf) = FRAME_TIME * 1000000000;
|
|
}
|
|
gst_pad_push (ttaparse->srcpad, GST_DATA (outbuf));
|
|
offset += ttaparse->index[i].size;
|
|
ttaparse->current_frame++;
|
|
i = ttaparse->current_frame;
|
|
}
|
|
|
|
if (size - offset > 0) {
|
|
glong remainder = size - offset;
|
|
|
|
outbuf = gst_buffer_create_sub (ttaparse->partialbuf, offset, remainder);
|
|
gst_buffer_unref (ttaparse->partialbuf);
|
|
ttaparse->partialbuf = outbuf;
|
|
} else {
|
|
gst_buffer_unref (ttaparse->partialbuf);
|
|
ttaparse->partialbuf = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
gboolean
|
|
gst_tta_parse_plugin_init (GstPlugin * plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "ttaparse",
|
|
GST_RANK_PRIMARY, GST_TYPE_TTA_PARSE)) {
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_tta_parse_debug, "ttaparse", 0,
|
|
"tta file parser");
|
|
|
|
return TRUE;
|
|
}
|