2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
24 #include "gstspeexdec.h"
26 //#include <gst/tag/tag.h>
28 GST_DEBUG_CATEGORY (speexdec_debug);
29 #define GST_CAT_DEFAULT speexdec_debug
31 static GstElementDetails speex_dec_details = {
33 "Codec/Decoder/Audio",
34 "decode speex streams to audio",
35 "Wim Taymans <wim@fluendo.com>",
38 #define DEFAULT_ENH TRUE
46 static GstStaticPadTemplate speex_dec_src_factory =
47 GST_STATIC_PAD_TEMPLATE ("src",
50 GST_STATIC_CAPS ("audio/x-raw-int, "
51 "rate = (int) [ 6000, 48000 ], "
52 "channels = (int) [ 1, 2 ], "
53 "endianness = (int) BYTE_ORDER, "
54 "signed = (boolean) true, " "width = (int) 16, " "depth = (int) 16")
57 static GstStaticPadTemplate speex_dec_sink_factory =
58 GST_STATIC_PAD_TEMPLATE ("sink",
61 GST_STATIC_CAPS ("audio/x-speex")
64 GST_BOILERPLATE (GstSpeexDec, gst_speex_dec, GstElement, GST_TYPE_ELEMENT);
66 static gboolean speex_dec_event (GstPad * pad, GstEvent * event);
67 static GstFlowReturn speex_dec_chain (GstPad * pad, GstBuffer * buf);
68 static GstStateChangeReturn speex_dec_change_state (GstElement * element,
69 GstStateChange transition);
71 static gboolean speex_dec_src_event (GstPad * pad, GstEvent * event);
72 static gboolean speex_dec_src_query (GstPad * pad, GstQuery * query);
73 static gboolean speex_dec_convert (GstPad * pad,
74 GstFormat src_format, gint64 src_value,
75 GstFormat * dest_format, gint64 * dest_value);
77 static void gst_speexdec_get_property (GObject * object, guint prop_id,
78 GValue * value, GParamSpec * pspec);
79 static void gst_speexdec_set_property (GObject * object, guint prop_id,
80 const GValue * value, GParamSpec * pspec);
83 gst_speex_dec_base_init (gpointer g_class)
85 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
87 gst_element_class_add_pad_template (element_class,
88 gst_static_pad_template_get (&speex_dec_src_factory));
89 gst_element_class_add_pad_template (element_class,
90 gst_static_pad_template_get (&speex_dec_sink_factory));
91 gst_element_class_set_details (element_class, &speex_dec_details);
95 gst_speex_dec_class_init (GstSpeexDecClass * klass)
97 GObjectClass *gobject_class;
98 GstElementClass *gstelement_class;
100 gobject_class = (GObjectClass *) klass;
101 gstelement_class = (GstElementClass *) klass;
103 gobject_class->set_property = gst_speexdec_set_property;
104 gobject_class->get_property = gst_speexdec_get_property;
106 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ENH,
107 g_param_spec_boolean ("enh", "Enh", "Enable perceptual enhancement",
108 DEFAULT_ENH, G_PARAM_READWRITE));
110 gstelement_class->change_state = speex_dec_change_state;
112 GST_DEBUG_CATEGORY_INIT (speexdec_debug, "speexdec", 0,
113 "speex decoding element");
116 static const GstQueryType *
117 speex_get_query_types (GstPad * pad)
119 static const GstQueryType speex_dec_src_query_types[] = {
125 return speex_dec_src_query_types;
129 gst_speex_dec_init (GstSpeexDec * dec, GstSpeexDecClass * g_class)
132 gst_pad_new_from_template (gst_static_pad_template_get
133 (&speex_dec_sink_factory), "sink");
134 gst_pad_set_chain_function (dec->sinkpad, speex_dec_chain);
135 gst_pad_set_event_function (dec->sinkpad, speex_dec_event);
136 gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
139 gst_pad_new_from_template (gst_static_pad_template_get
140 (&speex_dec_src_factory), "src");
141 gst_pad_use_fixed_caps (dec->srcpad);
142 gst_pad_set_event_function (dec->srcpad, speex_dec_src_event);
143 gst_pad_set_query_type_function (dec->srcpad, speex_get_query_types);
144 gst_pad_set_query_function (dec->srcpad, speex_dec_src_query);
145 gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
147 dec->enh = DEFAULT_ENH;
151 speex_dec_convert (GstPad * pad,
152 GstFormat src_format, gint64 src_value,
153 GstFormat * dest_format, gint64 * dest_value)
159 dec = GST_SPEEXDEC (gst_pad_get_parent (pad));
161 if (dec->packetno < 1) {
166 if (pad == dec->sinkpad &&
167 (src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES)) {
172 switch (src_format) {
173 case GST_FORMAT_TIME:
174 switch (*dest_format) {
175 case GST_FORMAT_BYTES:
176 scale = sizeof (float) * dec->header->nb_channels;
177 case GST_FORMAT_DEFAULT:
178 *dest_value = scale * (src_value * dec->header->rate / GST_SECOND);
184 case GST_FORMAT_DEFAULT:
185 switch (*dest_format) {
186 case GST_FORMAT_BYTES:
187 *dest_value = src_value * sizeof (float) * dec->header->nb_channels;
189 case GST_FORMAT_TIME:
190 *dest_value = src_value * GST_SECOND / dec->header->rate;
196 case GST_FORMAT_BYTES:
197 switch (*dest_format) {
198 case GST_FORMAT_DEFAULT:
199 *dest_value = src_value / (sizeof (float) * dec->header->nb_channels);
201 case GST_FORMAT_TIME:
202 *dest_value = src_value * GST_SECOND /
203 (dec->header->rate * sizeof (float) * dec->header->nb_channels);
214 gst_object_unref (dec);
219 speex_dec_src_query (GstPad * pad, GstQuery * query)
221 GstSpeexDec *dec = GST_SPEEXDEC (GST_OBJECT_PARENT (pad));
222 gboolean res = FALSE;
224 switch (GST_QUERY_TYPE (query)) {
225 case GST_QUERY_POSITION:
230 gst_query_parse_position (query, &format, NULL);
232 if ((res = speex_dec_convert (dec->srcpad, GST_FORMAT_DEFAULT,
233 dec->samples_out, &format, &cur))) {
234 gst_query_set_position (query, format, cur);
238 case GST_QUERY_DURATION:
241 GstFormat my_format = GST_FORMAT_TIME;
242 gint64 total_samples;
244 if (!(peer = gst_pad_get_peer (dec->sinkpad)))
247 gst_pad_query_duration (peer, &my_format, &total_samples);
248 gst_object_unref (peer);
250 if ((res = speex_dec_convert (dec->srcpad, GST_FORMAT_DEFAULT,
251 total_samples, &my_format, &total_samples))) {
252 gst_query_set_duration (query, GST_FORMAT_TIME, total_samples);
257 res = gst_pad_query_default (pad, query);
265 speex_dec_src_event (GstPad * pad, GstEvent * event)
268 GstSpeexDec *dec = GST_SPEEXDEC (gst_pad_get_parent (pad));
270 switch (GST_EVENT_TYPE (event)) {
271 case GST_EVENT_SEEK:{
273 GstFormat format, my_format = GST_FORMAT_DEFAULT;
274 GstSeekType cur_type, stop_type;
277 gst_event_parse_seek (event, NULL, &format, &flags, &cur_type, &cur,
280 /* convert to samples_out */
281 if (speex_dec_convert (pad, format, cur, &my_format, &cur) &&
283 speex_dec_convert (pad, format, stop, &my_format, &stop))) {
284 GstEvent *real_seek = gst_event_new_seek (1.0, GST_FORMAT_DEFAULT,
285 flags, cur_type, cur, stop_type, stop);
287 res = gst_pad_send_event (GST_PAD_PEER (dec->sinkpad), real_seek);
290 gst_event_unref (event);
294 res = gst_pad_event_default (pad, event);
298 gst_object_unref (dec);
304 speex_dec_event (GstPad * pad, GstEvent * event)
306 GstSpeexDec *dec = GST_SPEEXDEC (GST_OBJECT_PARENT (pad));
310 GST_LOG_OBJECT (dec, "handling event");
311 switch (GST_EVENT_TYPE (event)) {
312 case GST_EVENT_NEWSEGMENT:
313 gst_event_parse_new_segment (event, NULL, NULL, &fmt, &value, NULL, NULL);
314 if (fmt == GST_FORMAT_DEFAULT) {
315 dec->samples_out = value;
316 GST_DEBUG_OBJECT (dec,
317 "setting samples_out to %" G_GUINT64_FORMAT " after discont",
320 GST_WARNING_OBJECT (dec,
321 "discont event didn't include offset, we might set it wrong now");
324 if (dec->packetno < 2) {
325 if (dec->samples_out != 0)
326 GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL),
327 ("can't handle discont before parsing first 2 packets"));
329 gst_pad_push_event (dec->srcpad,
330 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
331 0, GST_CLOCK_TIME_NONE, 0));
333 GstFormat time_format = GST_FORMAT_TIME;
336 /* if one of them works, all of them work */
337 if (speex_dec_convert (dec->srcpad, GST_FORMAT_DEFAULT,
338 dec->samples_out, &time_format, &time)) {
339 gst_pad_push_event (dec->srcpad,
340 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
341 time, GST_CLOCK_TIME_NONE, 0));
343 GST_ERROR_OBJECT (dec,
344 "failed to parse data for DISCONT event, not sending any");
347 gst_event_unref (event);
350 return gst_pad_event_default (dec->sinkpad, event);
357 speex_dec_chain (GstPad * pad, GstBuffer * buf)
361 GstFlowReturn result;
363 dec = GST_SPEEXDEC (gst_pad_get_parent (pad));
365 if (dec->packetno == 0) {
369 dec->header = speex_packet_to_header ((char *) GST_BUFFER_DATA (buf),
370 GST_BUFFER_SIZE (buf));
371 gst_buffer_unref (buf);
373 GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
374 (NULL), ("couldn't read header"));
375 result = GST_FLOW_ERROR;
378 if (dec->header->mode >= SPEEX_NB_MODES) {
379 GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
381 ("Mode number %d does not (yet/any longer) exist in this version",
383 result = GST_FLOW_ERROR;
387 dec->mode = (SpeexMode *) speex_mode_list[dec->header->mode];
389 /* initialize the decoder */
390 dec->state = speex_decoder_init (dec->mode);
392 GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
393 (NULL), ("couldn't initialize decoder"));
394 gst_buffer_unref (buf);
395 result = GST_FLOW_ERROR;
399 speex_decoder_ctl (dec->state, SPEEX_SET_ENH, &dec->enh);
400 speex_decoder_ctl (dec->state, SPEEX_GET_FRAME_SIZE, &dec->frame_size);
402 if (dec->header->nb_channels != 1) {
403 dec->callback.callback_id = SPEEX_INBAND_STEREO;
404 dec->callback.func = speex_std_stereo_request_handler;
405 dec->callback.data = &dec->stereo;
406 speex_decoder_ctl (dec->state, SPEEX_SET_HANDLER, &dec->callback);
409 speex_decoder_ctl (dec->state, SPEEX_SET_SAMPLING_RATE, &dec->header->rate);
411 speex_bits_init (&dec->bits);
414 caps = gst_caps_new_simple ("audio/x-raw-int",
415 "rate", G_TYPE_INT, dec->header->rate,
416 "channels", G_TYPE_INT, dec->header->nb_channels,
417 "signed", G_TYPE_BOOLEAN, TRUE,
418 "endianness", G_TYPE_INT, G_BYTE_ORDER,
419 "width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL);
421 if (!gst_pad_set_caps (dec->srcpad, caps)) {
422 gst_caps_unref (caps);
423 result = GST_FLOW_NOT_NEGOTIATED;
426 gst_caps_unref (caps);
427 gst_pad_push_event (dec->srcpad,
428 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
429 0, GST_CLOCK_TIME_NONE, 0));
430 } else if (dec->packetno == 1) {
431 gchar *encoder = NULL;
433 /* FIXME parse comments */
434 GstTagList *list = gst_tag_list_new (); //gst_tag_list_from_vorbiscomment_buffer (buf, "", 1,
438 gst_buffer_unref (buf);
441 GST_WARNING_OBJECT (dec, "couldn't decode comments");
442 list = gst_tag_list_new ();
445 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
446 GST_TAG_ENCODER, encoder, NULL);
449 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
450 GST_TAG_AUDIO_CODEC, "Speex", NULL);
452 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
453 GST_TAG_ENCODER_VERSION, dec->vi.version, NULL);
455 if (dec->vi.bitrate_upper > 0)
456 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
457 GST_TAG_MAXIMUM_BITRATE, (guint) vd->vi.bitrate_upper, NULL);
458 if (vd->vi.bitrate_nominal > 0)
459 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
460 GST_TAG_NOMINAL_BITRATE, (guint) vd->vi.bitrate_nominal, NULL);
461 if (vd->vi.bitrate_lower > 0)
462 gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
463 GST_TAG_MINIMUM_BITRATE, (guint) vd->vi.bitrate_lower, NULL);
465 gst_element_found_tags_for_pad (GST_ELEMENT (dec), dec->srcpad, list);
469 /* send data to the bitstream */
470 speex_bits_read_from (&dec->bits, (char *) GST_BUFFER_DATA (buf),
471 GST_BUFFER_SIZE (buf));
472 gst_buffer_unref (buf);
474 /* now decode each frame */
475 for (i = 0; i < dec->header->frames_per_packet; i++) {
480 ret = speex_decode (dec->state, &dec->bits, dec->output);
482 /* uh? end of stream */
483 GST_WARNING_OBJECT (dec, "Unexpected end of stream found");
485 } else if (ret == -2) {
486 GST_WARNING_OBJECT (dec, "Decoding error: corrupted stream?");
489 if (speex_bits_remaining (&dec->bits) < 0) {
490 GST_WARNING_OBJECT (dec, "Decoding overflow: corrupted stream?");
493 if (dec->header->nb_channels == 2)
494 speex_decode_stereo (dec->output, dec->frame_size, &dec->stereo);
497 gst_pad_alloc_buffer_and_set_caps (dec->srcpad,
498 GST_BUFFER_OFFSET_NONE,
499 dec->frame_size * dec->header->nb_channels * 2,
500 GST_PAD_CAPS (dec->srcpad), &outbuf)) != GST_FLOW_OK)
502 out_data = (gint16 *) GST_BUFFER_DATA (outbuf);
504 /*PCM saturation (just in case) */
505 for (i = 0; i < dec->frame_size * dec->header->nb_channels; i++) {
506 if (dec->output[i] > 32767.0)
508 else if (dec->output[i] < -32768.0)
509 out_data[i] = -32768;
511 out_data[i] = (gint16) dec->output[i];
514 GST_BUFFER_OFFSET (outbuf) = dec->samples_out;
515 GST_BUFFER_OFFSET_END (outbuf) = dec->samples_out + dec->frame_size;
516 GST_BUFFER_TIMESTAMP (outbuf) =
517 dec->samples_out * GST_SECOND / dec->header->rate;
518 GST_BUFFER_DURATION (outbuf) =
519 dec->frame_size * GST_SECOND / dec->header->rate;
520 res = gst_pad_push (dec->srcpad, outbuf);
521 if (res != GST_FLOW_OK && res != GST_FLOW_NOT_LINKED)
523 dec->samples_out += dec->frame_size;
527 result = GST_FLOW_OK;
530 gst_object_unref (dec);
536 gst_speexdec_get_property (GObject * object, guint prop_id,
537 GValue * value, GParamSpec * pspec)
539 GstSpeexDec *speexdec;
541 g_return_if_fail (GST_IS_SPEEXDEC (object));
543 speexdec = GST_SPEEXDEC (object);
547 g_value_set_boolean (value, speexdec->enh);
550 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
556 gst_speexdec_set_property (GObject * object, guint prop_id,
557 const GValue * value, GParamSpec * pspec)
559 GstSpeexDec *speexdec;
561 g_return_if_fail (GST_IS_SPEEXDEC (object));
563 speexdec = GST_SPEEXDEC (object);
567 speexdec->enh = g_value_get_boolean (value);
570 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
576 static GstStateChangeReturn
577 speex_dec_change_state (GstElement * element, GstStateChange transition)
579 GstSpeexDec *vd = GST_SPEEXDEC (element);
581 switch (transition) {
582 case GST_STATE_CHANGE_NULL_TO_READY:
584 case GST_STATE_CHANGE_READY_TO_PAUSED:
586 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
588 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
590 case GST_STATE_CHANGE_PAUSED_TO_READY:
594 case GST_STATE_CHANGE_READY_TO_NULL:
600 return parent_class->change_state (element, transition);