mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-20 23:36:38 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/ext/vorbis/vorbisdec.c
Benjamin Otte 91fc3c7de8 ext/vorbis/vorbisdec.c: use explicit caps on the srcpad 
Original commit message from CVS:
* ext/vorbis/vorbisdec.c: (gst_vorbis_dec_init):
use explicit caps on the srcpad
* ext/vorbis/vorbisdec.c: (vorbis_dec_chain):
properly error out if caps couldn't be set (fixes #142764)
2004-06-06 19:36:08 +00:00

471 lines
14 KiB
C
Raw Blame History

/* GStreamer
* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* 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 "vorbisdec.h"
#include <string.h>
#include <gst/tag/tag.h>
GST_DEBUG_CATEGORY_EXTERN (vorbisdec_debug);
#define GST_CAT_DEFAULT vorbisdec_debug
static GstElementDetails vorbis_dec_details = {
"VorbisDec",
"Codec/Decoder/Audio",
"decode raw vorbis streams to float audio",
"Benjamin Otte <in7y118@public.uni-hamburg.de>",
};
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate vorbis_dec_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-float, "
"rate = (int) [ 11025, 48000 ], "
"channels = (int) [ 1, 2 ], " "endianness = (int) BYTE_ORDER, "
/* no ifdef in macros, please
#ifdef GST_VORBIS_DEC_SEQUENTIAL
"layout = \"sequential\", "
#endif
*/
"width = (int) 32, " "buffer-frames = (int) 0")
);
static GstStaticPadTemplate vorbis_dec_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-vorbis")
);
GST_BOILERPLATE (GstVorbisDec, gst_vorbis_dec, GstElement, GST_TYPE_ELEMENT);
static void vorbis_dec_chain (GstPad * pad, GstData * data);
static GstElementStateReturn vorbis_dec_change_state (GstElement * element);
static const GstFormat *vorbis_dec_get_formats (GstPad * pad);
static gboolean vorbis_dec_src_event (GstPad * pad, GstEvent * event);
static gboolean vorbis_dec_src_query (GstPad * pad,
GstQueryType query, GstFormat * format, gint64 * value);
static void
gst_vorbis_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vorbis_dec_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vorbis_dec_sink_factory));
gst_element_class_set_details (element_class, &vorbis_dec_details);
}
static void
gst_vorbis_dec_class_init (GstVorbisDecClass * klass)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gstelement_class->change_state = vorbis_dec_change_state;
}
static const GstFormat *
vorbis_dec_get_formats (GstPad * pad)
{
static const GstFormat src_formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_DEFAULT,
GST_FORMAT_TIME,
0
};
static const GstFormat sink_formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_TIME,
0
};
return (GST_PAD_IS_SRC (pad) ? src_formats : sink_formats);
}
static void
gst_vorbis_dec_init (GstVorbisDec * dec)
{
dec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&vorbis_dec_sink_factory), "sink");
gst_pad_set_chain_function (dec->sinkpad, vorbis_dec_chain);
gst_pad_set_formats_function (dec->sinkpad, vorbis_dec_get_formats);
gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
dec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&vorbis_dec_src_factory), "src");
gst_pad_use_explicit_caps (dec->srcpad);
gst_pad_set_event_function (dec->srcpad, vorbis_dec_src_event);
gst_pad_set_query_function (dec->srcpad, vorbis_dec_src_query);
gst_pad_set_formats_function (dec->srcpad, vorbis_dec_get_formats);
gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
GST_FLAG_SET (dec, GST_ELEMENT_EVENT_AWARE);
}
/* FIXME: plug this to the pad convert function */
static gboolean
vorbis_dec_to_granulepos (GstVorbisDec * dec, GstFormat format, guint64 from,
guint64 * to)
{
if (dec->packetno < 1)
return FALSE;
switch (format) {
case GST_FORMAT_TIME:
*to = from * dec->vi.rate / GST_SECOND;
return TRUE;
case GST_FORMAT_DEFAULT:
*to = from;
return TRUE;
case GST_FORMAT_BYTES:
*to = from / sizeof (float) / dec->vi.channels;
return TRUE;
default:
return FALSE;
}
}
static gboolean
vorbis_dec_from_granulepos (GstVorbisDec * dec, GstFormat format, guint64 from,
guint64 * to)
{
if (dec->packetno < 1)
return FALSE;
switch (format) {
case GST_FORMAT_TIME:
*to = from * GST_SECOND / dec->vi.rate;
return TRUE;
case GST_FORMAT_DEFAULT:
*to = from;
return TRUE;
case GST_FORMAT_BYTES:
*to = from * sizeof (float) * dec->vi.channels;
return TRUE;
default:
return FALSE;
}
}
static gboolean
vorbis_dec_src_query (GstPad * pad, GstQueryType query, GstFormat * format,
gint64 * value)
{
gint64 granulepos;
GstVorbisDec *dec = GST_VORBIS_DEC (gst_pad_get_parent (pad));
GstFormat my_format = GST_FORMAT_DEFAULT;
if (!gst_pad_query (GST_PAD_PEER (dec->sinkpad), query, &my_format,
&granulepos))
return FALSE;
if (!vorbis_dec_from_granulepos (dec, *format, granulepos, (guint64 *) value))
return FALSE;
GST_LOG_OBJECT (dec,
"query %u: peer returned granulepos: %llu - we return %llu (format %u)\n",
query, granulepos, *value, *format);
return TRUE;
}
static gboolean
vorbis_dec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstVorbisDec *dec = GST_VORBIS_DEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
guint64 value;
res = vorbis_dec_to_granulepos (dec, GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_OFFSET (event), &value);
if (res) {
GstEvent *real_seek = gst_event_new_seek (
(GST_EVENT_SEEK_TYPE (event) & ~GST_SEEK_FORMAT_MASK) |
GST_FORMAT_DEFAULT,
value);
res = gst_pad_send_event (GST_PAD_PEER (dec->sinkpad), real_seek);
}
gst_event_unref (event);
break;
}
default:
res = gst_pad_event_default (pad, event);
break;
}
return res;
}
static void
vorbis_dec_event (GstVorbisDec * dec, GstEvent * event)
{
guint64 value, time, bytes;
GST_LOG_OBJECT (dec, "handling event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
if (gst_event_discont_get_value (event, GST_FORMAT_DEFAULT,
(gint64 *) & value)) {
dec->granulepos = value;
GST_DEBUG_OBJECT (dec,
"setting granuleposition to %" G_GUINT64_FORMAT " after discont",
value);
} else {
GST_WARNING_OBJECT (dec,
"discont event didn't include offset, we might set it wrong now");
}
if (dec->packetno < 3) {
if (dec->granulepos != 0)
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL),
("can't handle discont before parsing first 3 packets"));
dec->packetno = 0;
gst_pad_push (dec->srcpad, GST_DATA (gst_event_new_discontinuous (FALSE,
GST_FORMAT_TIME, (guint64) 0, GST_FORMAT_DEFAULT,
(guint64) 0, GST_FORMAT_BYTES, (guint64) 0, 0)));
} else {
dec->packetno = 3;
/* if one of them works, all of them work */
if (vorbis_dec_from_granulepos (dec, GST_FORMAT_TIME, dec->granulepos,
&time)
&& vorbis_dec_from_granulepos (dec, GST_FORMAT_DEFAULT,
dec->granulepos, &value)
&& vorbis_dec_from_granulepos (dec, GST_FORMAT_BYTES,
dec->granulepos, &bytes)) {
gst_pad_push (dec->srcpad,
GST_DATA (gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
time, GST_FORMAT_DEFAULT, value, GST_FORMAT_BYTES, bytes,
0)));
} else {
GST_ERROR_OBJECT (dec,
"failed to parse data for DISCONT event, not sending any");
}
#ifdef HAVE_VORBIS_SYNTHESIS_RESTART
vorbis_synthesis_restart (&dec->vd);
#endif
}
gst_data_unref (GST_DATA (event));
break;
default:
gst_pad_event_default (dec->sinkpad, event);
break;
}
}
static void
vorbis_dec_chain (GstPad * pad, GstData * data)
{
GstBuffer *buf;
GstVorbisDec *vd;
ogg_packet packet; /* lol */
vd = GST_VORBIS_DEC (gst_pad_get_parent (pad));
if (GST_IS_EVENT (data)) {
vorbis_dec_event (vd, GST_EVENT (data));
return;
}
buf = GST_BUFFER (data);
/* make ogg_packet out of the buffer */
packet.packet = GST_BUFFER_DATA (buf);
packet.bytes = GST_BUFFER_SIZE (buf);
packet.granulepos = GST_BUFFER_OFFSET_END (buf);
packet.packetno = vd->packetno++;
/*
* FIXME. Is there anyway to know that this is the last packet and
* set e_o_s??
*/
packet.e_o_s = 0;
/* switch depending on packet type */
if (packet.packet[0] & 1) {
/* header packet */
if (packet.packet[0] / 2 != packet.packetno) {
/* FIXME: just skip? */
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("unexpected packet type %d, expected %d",
(gint) packet.packet[0], (gint) packet.packetno));
gst_data_unref (data);
return;
}
/* Packetno = 0 if the first byte is exactly 0x01 */
packet.b_o_s = (packet.packet[0] == 0x1) ? 1 : 0;
if (vorbis_synthesis_headerin (&vd->vi, &vd->vc, &packet)) {
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("couldn't read header packet"));
gst_data_unref (data);
return;
}
if (packet.packetno == 1) {
gchar *encoder = NULL;
GstTagList *list =
gst_tag_list_from_vorbiscomment_buffer (buf, "\003vorbis", 7,
&encoder);
if (!list) {
GST_ERROR_OBJECT (vd, "couldn't decode comments");
list = gst_tag_list_new ();
}
if (encoder) {
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER, encoder, NULL);
g_free (encoder);
}
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER_VERSION, vd->vi.version, NULL);
if (vd->vi.bitrate_upper > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_MAXIMUM_BITRATE, (guint) vd->vi.bitrate_upper, NULL);
if (vd->vi.bitrate_nominal > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_NOMINAL_BITRATE, (guint) vd->vi.bitrate_nominal, NULL);
if (vd->vi.bitrate_lower > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_MINIMUM_BITRATE, (guint) vd->vi.bitrate_lower, NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (vd), vd->srcpad, 0, list);
} else if (packet.packetno == 2) {
GstCaps *caps;
/* done */
vorbis_synthesis_init (&vd->vd, &vd->vi);
vorbis_block_init (&vd->vd, &vd->vb);
caps = gst_caps_new_simple ("audio/x-raw-float",
"rate", G_TYPE_INT, vd->vi.rate,
"channels", G_TYPE_INT, vd->vi.channels,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, 32, "buffer-frames", G_TYPE_INT, 0, NULL);
if (!gst_pad_set_explicit_caps (vd->srcpad, caps)) {
gst_caps_free (caps);
return;
}
gst_caps_free (caps);
}
} else {
float **pcm;
guint sample_count;
if (packet.packetno < 3) {
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("no header sent yet (packet no is %d)", packet.packetno));
gst_data_unref (data);
return;
}
/* normal data packet */
if (vorbis_synthesis (&vd->vb, &packet)) {
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("couldn't read data packet"));
gst_data_unref (data);
return;
}
if (vorbis_synthesis_blockin (&vd->vd, &vd->vb) < 0) {
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("vorbis decoder did not accept data packet"));
gst_data_unref (data);
return;
}
sample_count = vorbis_synthesis_pcmout (&vd->vd, &pcm);
if (sample_count > 0) {
int i, j;
GstBuffer *out = gst_pad_alloc_buffer (vd->srcpad, GST_BUFFER_OFFSET_NONE,
sample_count * vd->vi.channels * sizeof (float));
float *out_data = (float *) GST_BUFFER_DATA (out);
#ifdef GST_VORBIS_DEC_SEQUENTIAL
for (i = 0; i < vd->vi.channels; i++) {
memcpy (out_data, pcm[i], sample_count * sizeof (float));
out_data += sample_count;
}
#else
for (j = 0; j < sample_count; j++) {
for (i = 0; i < vd->vi.channels; i++) {
*out_data = pcm[i][j];
out_data++;
}
}
#endif
GST_BUFFER_OFFSET (out) = vd->granulepos;
GST_BUFFER_OFFSET_END (out) = vd->granulepos + sample_count;
GST_BUFFER_TIMESTAMP (out) = vd->granulepos * GST_SECOND / vd->vi.rate;
GST_BUFFER_DURATION (out) = sample_count * GST_SECOND / vd->vi.rate;
gst_pad_push (vd->srcpad, GST_DATA (out));
vorbis_synthesis_read (&vd->vd, sample_count);
vd->granulepos += sample_count;
}
}
gst_data_unref (data);
}
static GstElementStateReturn
vorbis_dec_change_state (GstElement * element)
{
GstVorbisDec *vd = GST_VORBIS_DEC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
vorbis_info_init (&vd->vi);
vorbis_comment_init (&vd->vc);
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
vorbis_block_clear (&vd->vb);
vorbis_dsp_clear (&vd->vd);
vorbis_comment_clear (&vd->vc);
vorbis_info_clear (&vd->vi);
vd->packetno = 0;
vd->granulepos = 0;
break;
case GST_STATE_READY_TO_NULL:
break;
default:
g_assert_not_reached ();
break;
}
return parent_class->change_state (element);
}
Reference in a new issue View git blame Copy permalink