1 /* GStreamer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * Copyright (C) <2004> Wim Taymans <wim@fluendo.com>
4 * Copyright (C) <2005> Thomas Vander Stichele <thomas at apestaart dot org>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
20 */
22 #ifdef HAVE_CONFIG_H
23 #include "config.h"
24 #endif
25 #include "string.h"
26 #include "gstlame.h"
28 #ifdef lame_set_preset
29 #define GST_LAME_PRESET
30 #endif
32 GST_DEBUG_CATEGORY_STATIC (debug);
33 #define GST_CAT_DEFAULT debug
35 /* elementfactory information */
36 static GstElementDetails gst_lame_details = {
37 "L.A.M.E. mp3 encoder",
38 "Codec/Encoder/Audio",
39 "High-quality free MP3 encoder",
40 "Erik Walthinsen <omega@cse.ogi.edu>, " "Wim Taymans <wim@fluendo.com>",
41 };
43 /* LAME can do MPEG-1, MPEG-2, and MPEG-2.5, so it has 9 possible
44 * sample rates it supports */
45 static GstStaticPadTemplate gst_lame_sink_template =
46 GST_STATIC_PAD_TEMPLATE ("sink",
47 GST_PAD_SINK,
48 GST_PAD_ALWAYS,
49 GST_STATIC_CAPS ("audio/x-raw-int, "
50 "endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
51 "signed = (boolean) true, "
52 "width = (int) 16, "
53 "depth = (int) 16, "
54 "rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
55 "channels = (int) [ 1, 2 ]")
56 );
58 static GstStaticPadTemplate gst_lame_src_template =
59 GST_STATIC_PAD_TEMPLATE ("src",
60 GST_PAD_SRC,
61 GST_PAD_ALWAYS,
62 GST_STATIC_CAPS ("audio/mpeg, "
63 "mpegversion = (int) 1, "
64 "layer = (int) 3, "
65 "rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, "
66 "channels = (int) [ 1, 2 ]")
67 );
69 /********** Define useful types for non-programmatic interfaces **********/
70 #define GST_TYPE_LAME_MODE (gst_lame_mode_get_type())
71 static GType
72 gst_lame_mode_get_type (void)
73 {
74 static GType lame_mode_type = 0;
75 static GEnumValue lame_modes[] = {
76 {0, "0", "Stereo"},
77 {1, "1", "Joint-Stereo"},
78 {2, "2", "Dual channel"},
79 {3, "3", "Mono"},
80 {4, "4", "Auto"},
81 {0, NULL, NULL}
82 };
84 if (!lame_mode_type) {
85 lame_mode_type = g_enum_register_static ("GstLameMode", lame_modes);
86 }
87 return lame_mode_type;
88 }
90 #define GST_TYPE_LAME_QUALITY (gst_lame_quality_get_type())
91 static GType
92 gst_lame_quality_get_type (void)
93 {
94 static GType lame_quality_type = 0;
95 static GEnumValue lame_quality[] = {
96 {0, "0", "0 - Best"},
97 {1, "1", "1"},
98 {2, "2", "2"},
99 {3, "3", "3"},
100 {4, "4", "4"},
101 {5, "5", "5 - Default"},
102 {6, "6", "6"},
103 {7, "7", "7"},
104 {8, "8", "8"},
105 {9, "9", "9 - Worst"},
106 {0, NULL, NULL}
107 };
109 if (!lame_quality_type) {
110 lame_quality_type = g_enum_register_static ("GstLameQuality", lame_quality);
111 }
112 return lame_quality_type;
113 }
115 #define GST_TYPE_LAME_PADDING (gst_lame_padding_get_type())
116 static GType
117 gst_lame_padding_get_type (void)
118 {
119 static GType lame_padding_type = 0;
120 static GEnumValue lame_padding[] = {
121 {0, "0", "No Padding"},
122 {1, "1", "Always Pad"},
123 {2, "2", "Adjust Padding"},
124 {0, NULL, NULL}
125 };
127 if (!lame_padding_type) {
128 lame_padding_type = g_enum_register_static ("GstLamePadding", lame_padding);
129 }
130 return lame_padding_type;
131 }
133 #define GST_TYPE_LAME_VBRMODE (gst_lame_vbrmode_get_type())
134 static GType
135 gst_lame_vbrmode_get_type (void)
136 {
137 static GType lame_vbrmode_type = 0;
138 static GEnumValue lame_vbrmode[] = {
139 {vbr_off, "cbr", "No VBR (Constant Bitrate)"},
140 {vbr_rh, "old", "Lame's old VBR algorithm"},
141 {vbr_abr, "abr", "VBR Average Bitrate"},
142 {vbr_mtrh, "new", "Lame's new VBR algorithm"},
143 {0, NULL, NULL}
144 };
146 if (!lame_vbrmode_type) {
147 lame_vbrmode_type = g_enum_register_static ("GstLameVbrmode", lame_vbrmode);
148 }
150 return lame_vbrmode_type;
151 }
153 #ifdef GSTLAME_PRESET
154 #define GST_TYPE_LAME_PRESET (gst_lame_preset_get_type())
155 static GType
156 gst_lame_preset_get_type (void)
157 {
158 static GType gst_lame_preset = 0;
159 static GEnumValue gst_lame_presets[] = {
160 {0, "none", "None"},
161 {MEDIUM, "medium", "Medium"},
162 {STANDARD, "standard", "Standard"},
163 {EXTREME, "extreme", "Extreme"},
164 {INSANE, "insane", "Insane"},
165 {0, NULL, NULL}
166 };
168 if (!gst_lame_preset) {
169 gst_lame_preset =
170 g_enum_register_static ("GstLamePreset", gst_lame_presets);
171 }
173 return gst_lame_preset;
174 }
175 #endif
177 /********** Standard stuff for signals and arguments **********/
178 /* GstLame signals and args */
179 enum
180 {
181 /* FILL_ME */
182 LAST_SIGNAL
183 };
185 enum
186 {
187 ARG_0,
188 ARG_BITRATE,
189 ARG_COMPRESSION_RATIO,
190 ARG_QUALITY,
191 ARG_MODE,
192 ARG_FORCE_MS,
193 ARG_FREE_FORMAT,
194 ARG_COPYRIGHT,
195 ARG_ORIGINAL,
196 ARG_ERROR_PROTECTION,
197 ARG_PADDING_TYPE,
198 ARG_EXTENSION,
199 ARG_STRICT_ISO,
200 ARG_DISABLE_RESERVOIR,
201 ARG_VBR,
202 ARG_VBR_MEAN_BITRATE,
203 ARG_VBR_MIN_BITRATE,
204 ARG_VBR_MAX_BITRATE,
205 ARG_VBR_HARD_MIN,
206 ARG_LOWPASS_FREQ,
207 ARG_LOWPASS_WIDTH,
208 ARG_HIGHPASS_FREQ,
209 ARG_HIGHPASS_WIDTH,
210 ARG_ATH_ONLY,
211 ARG_ATH_SHORT,
212 ARG_NO_ATH,
213 ARG_ATH_LOWER,
214 ARG_CWLIMIT,
215 ARG_ALLOW_DIFF_SHORT,
216 ARG_NO_SHORT_BLOCKS,
217 ARG_EMPHASIS,
218 ARG_VBR_QUALITY,
219 #ifdef GSTLAME_PRESET
220 ARG_XINGHEADER,
221 ARG_PRESET
222 #else
223 ARG_XINGHEADER
224 #endif
225 };
227 static void gst_lame_base_init (gpointer g_class);
228 static void gst_lame_class_init (GstLameClass * klass);
229 static void gst_lame_init (GstLame * gst_lame);
231 static void gst_lame_set_property (GObject * object, guint prop_id,
232 const GValue * value, GParamSpec * pspec);
233 static void gst_lame_get_property (GObject * object, guint prop_id,
234 GValue * value, GParamSpec * pspec);
235 static gboolean gst_lame_sink_event (GstPad * pad, GstEvent * event);
236 static GstFlowReturn gst_lame_chain (GstPad * pad, GstBuffer * buf);
237 static gboolean gst_lame_setup (GstLame * lame);
238 static GstStateChangeReturn gst_lame_change_state (GstElement * element,
239 GstStateChange transition);
241 static GstElementClass *parent_class = NULL;
243 /* static guint gst_lame_signals[LAST_SIGNAL] = { 0 }; */
245 GType
246 gst_lame_get_type (void)
247 {
248 static GType gst_lame_type = 0;
250 if (!gst_lame_type) {
251 static const GTypeInfo gst_lame_info = {
252 sizeof (GstLameClass),
253 gst_lame_base_init,
254 NULL,
255 (GClassInitFunc) gst_lame_class_init,
256 NULL,
257 NULL,
258 sizeof (GstLame),
259 0,
260 (GInstanceInitFunc) gst_lame_init,
261 };
263 static const GInterfaceInfo tag_setter_info = {
264 NULL,
265 NULL,
266 NULL
267 };
269 gst_lame_type =
270 g_type_register_static (GST_TYPE_ELEMENT, "GstLame", &gst_lame_info, 0);
271 g_type_add_interface_static (gst_lame_type, GST_TYPE_TAG_SETTER,
272 &tag_setter_info);
274 }
275 return gst_lame_type;
276 }
278 static void
279 gst_lame_base_init (gpointer g_class)
280 {
281 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
283 gst_element_class_add_pad_template (element_class,
284 gst_static_pad_template_get (&gst_lame_src_template));
285 gst_element_class_add_pad_template (element_class,
286 gst_static_pad_template_get (&gst_lame_sink_template));
287 gst_element_class_set_details (element_class, &gst_lame_details);
288 }
290 static void
291 gst_lame_class_init (GstLameClass * klass)
292 {
293 GObjectClass *gobject_class;
294 GstElementClass *gstelement_class;
296 gobject_class = (GObjectClass *) klass;
297 gstelement_class = (GstElementClass *) klass;
299 parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
301 gobject_class->set_property = gst_lame_set_property;
302 gobject_class->get_property = gst_lame_get_property;
304 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BITRATE,
305 g_param_spec_int ("bitrate", "Bitrate (kb/s)", "Bitrate in kbit/sec",
306 8, 320, 128, G_PARAM_READWRITE));
307 /* compression ratio set to 0.0 by default otherwise it overrides the bitrate setting */
308 g_object_class_install_property (G_OBJECT_CLASS (klass),
309 ARG_COMPRESSION_RATIO, g_param_spec_float ("compression_ratio",
310 "Compression Ratio",
311 "let lame choose bitrate to achieve selected compression ratio", 0.0,
312 200.0, 0.0, G_PARAM_READWRITE));
313 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
314 g_param_spec_enum ("quality", "Quality",
315 "Quality of algorithm used for encoding", GST_TYPE_LAME_QUALITY, 5,
316 G_PARAM_READWRITE));
317 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
318 g_param_spec_enum ("mode", "Mode", "Encoding mode", GST_TYPE_LAME_MODE, 0,
319 G_PARAM_READWRITE));
320 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FORCE_MS,
321 g_param_spec_boolean ("force_ms", "Force ms",
322 "Force ms_stereo on all frames", TRUE, G_PARAM_READWRITE));
323 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FREE_FORMAT,
324 g_param_spec_boolean ("free_format", "Free format",
325 "Produce a free format bitstream", TRUE, G_PARAM_READWRITE));
326 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COPYRIGHT,
327 g_param_spec_boolean ("copyright", "Copyright", "Mark as copyright", TRUE,
328 G_PARAM_READWRITE));
329 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ORIGINAL,
330 g_param_spec_boolean ("original", "Original", "Mark as non-original",
331 TRUE, G_PARAM_READWRITE));
332 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ERROR_PROTECTION,
333 g_param_spec_boolean ("error_protection", "Error protection",
334 "Adds 16 bit checksum to every frame", TRUE, G_PARAM_READWRITE));
335 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PADDING_TYPE,
336 g_param_spec_enum ("padding_type", "Padding type", "Padding type",
337 GST_TYPE_LAME_PADDING, 0, G_PARAM_READWRITE));
338 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EXTENSION,
339 g_param_spec_boolean ("extension", "Extension", "Extension", TRUE,
340 G_PARAM_READWRITE));
341 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_STRICT_ISO,
342 g_param_spec_boolean ("strict_iso", "Strict ISO",
343 "Comply as much as possible to ISO MPEG spec", TRUE,
344 G_PARAM_READWRITE));
345 g_object_class_install_property (G_OBJECT_CLASS (klass),
346 ARG_DISABLE_RESERVOIR, g_param_spec_boolean ("disable_reservoir",
347 "Disable reservoir", "Disable the bit reservoir", TRUE,
348 G_PARAM_READWRITE));
349 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR,
350 g_param_spec_enum ("vbr", "VBR", "Specify bitrate mode",
351 GST_TYPE_LAME_VBRMODE, vbr_off, G_PARAM_READWRITE));
352 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_QUALITY,
353 g_param_spec_enum ("vbr_quality", "VBR Quality", "VBR Quality",
354 GST_TYPE_LAME_QUALITY, 5, G_PARAM_READWRITE));
355 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MEAN_BITRATE,
356 g_param_spec_int ("vbr_mean_bitrate", "VBR mean bitrate",
357 "Specify mean bitrate", 0, G_MAXINT, 0, G_PARAM_READWRITE));
358 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MIN_BITRATE,
359 g_param_spec_int ("vbr_min_bitrate", "VBR min bitrate",
360 "Specify min bitrate", 0, G_MAXINT, 0, G_PARAM_READWRITE));
361 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_MAX_BITRATE,
362 g_param_spec_int ("vbr_max_bitrate", "VBR max bitrate",
363 "Specify max bitrate", 0, G_MAXINT, 0, G_PARAM_READWRITE));
364 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_VBR_HARD_MIN,
365 g_param_spec_int ("vbr_hard_min", "VBR hard min",
366 "Specify hard min bitrate", 0, G_MAXINT, 0, G_PARAM_READWRITE));
367 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOWPASS_FREQ,
368 g_param_spec_int ("lowpass_freq", "Lowpass freq",
369 "frequency(kHz), lowpass filter cutoff above freq", 0, 50000, 0,
370 G_PARAM_READWRITE));
371 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOWPASS_WIDTH,
372 g_param_spec_int ("lowpass_width", "Lowpass width",
373 "frequency(kHz) - default 15% of lowpass freq", 0, G_MAXINT, 0,
374 G_PARAM_READWRITE));
375 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HIGHPASS_FREQ,
376 g_param_spec_int ("highpass_freq", "Highpass freq",
377 "frequency(kHz), highpass filter cutoff below freq", 0, 50000, 0,
378 G_PARAM_READWRITE));
379 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_HIGHPASS_WIDTH,
380 g_param_spec_int ("highpass_width", "Highpass width",
381 "frequency(kHz) - default 15% of highpass freq", 0, G_MAXINT, 0,
382 G_PARAM_READWRITE));
383 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_ONLY,
384 g_param_spec_boolean ("ath_only", "ATH only",
385 "Ignore GPSYCHO completely, use ATH only", TRUE, G_PARAM_READWRITE));
386 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_SHORT,
387 g_param_spec_boolean ("ath_short", "ATH short",
388 "Ignore GPSYCHO for short blocks, use ATH only", TRUE,
389 G_PARAM_READWRITE));
390 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NO_ATH,
391 g_param_spec_boolean ("no_ath", "No ath",
392 "turns ATH down to a flat noise floor", TRUE, G_PARAM_READWRITE));
393 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ATH_LOWER,
394 g_param_spec_int ("ath_lower", "ATH lower", "lowers ATH by x dB",
395 G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
396 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CWLIMIT,
397 g_param_spec_int ("cwlimit", "Cwlimit",
398 "Compute tonality up to freq (in kHz) default 8.8717", 0, 50000, 0,
399 G_PARAM_READWRITE));
400 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ALLOW_DIFF_SHORT,
401 g_param_spec_boolean ("allow_diff_short", "Allow diff short",
402 "Allow diff short", TRUE, G_PARAM_READWRITE));
403 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NO_SHORT_BLOCKS,
404 g_param_spec_boolean ("no_short_blocks", "No short blocks",
405 "Do not use short blocks", TRUE, G_PARAM_READWRITE));
406 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_EMPHASIS,
407 g_param_spec_boolean ("emphasis", "Emphasis", "Emphasis", TRUE,
408 G_PARAM_READWRITE));
409 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_XINGHEADER,
410 g_param_spec_boolean ("xingheader", "Output Xing Header",
411 "Output Xing Header", FALSE, G_PARAM_READWRITE));
412 #ifdef GSTLAME_PRESET
413 g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PRESET,
414 g_param_spec_enum ("preset", "Lame Preset", "Lame Preset",
415 GST_TYPE_LAME_PRESET, 0, G_PARAM_READWRITE));
416 #endif
418 gstelement_class->change_state = gst_lame_change_state;
419 }
421 static gboolean
422 gst_lame_sink_setcaps (GstPad * pad, GstCaps * caps)
423 {
424 GstLame *lame;
425 gint out_samplerate;
426 GstStructure *structure;
427 GstCaps *othercaps;
429 lame = GST_LAME (gst_pad_get_parent (pad));
430 structure = gst_caps_get_structure (caps, 0);
432 if (!gst_structure_get_int (structure, "rate", &lame->samplerate))
433 goto no_rate;
434 if (!gst_structure_get_int (structure, "channels", &lame->num_channels))
435 goto no_channels;
437 GST_DEBUG_OBJECT (lame, "sink_setcaps, setting up lame");
438 if (!gst_lame_setup (lame))
439 goto setup_failed;
442 out_samplerate = lame_get_out_samplerate (lame->lgf);
443 if (out_samplerate == 0)
444 goto zero_output_rate;
446 othercaps =
447 gst_caps_new_simple ("audio/mpeg",
448 "mpegversion", G_TYPE_INT, 1,
449 "layer", G_TYPE_INT, 3,
450 "channels", G_TYPE_INT, lame->num_channels,
451 "rate", G_TYPE_INT, out_samplerate, NULL);
453 /* and use these caps */
454 gst_pad_set_caps (lame->srcpad, othercaps);
455 gst_caps_unref (othercaps);
457 return TRUE;
459 no_rate:
460 {
461 GST_ELEMENT_ERROR (lame, CORE, NEGOTIATION, (NULL),
462 ("no rate specified in input"));
463 return FALSE;
464 }
465 no_channels:
466 {
467 GST_ELEMENT_ERROR (lame, CORE, NEGOTIATION, (NULL),
468 ("no channels specified in input"));
469 return FALSE;
470 }
471 zero_output_rate:
472 {
473 GST_ELEMENT_ERROR (lame, CORE, NEGOTIATION, (NULL),
474 ("lame decided on a zero sample rate"));
475 return FALSE;
476 }
477 setup_failed:
478 {
479 GST_ELEMENT_ERROR (lame, CORE, NEGOTIATION, (NULL),
480 ("could not initialize encoder (wrong parameters?)"));
481 return FALSE;
482 }
483 }
485 static void
486 gst_lame_init (GstLame * lame)
487 {
488 GST_DEBUG_OBJECT (lame, "starting initialization");
490 lame->sinkpad =
491 gst_pad_new_from_template (gst_static_pad_template_get
492 (&gst_lame_sink_template), "sink");
493 gst_pad_set_event_function (lame->sinkpad, gst_lame_sink_event);
494 gst_pad_set_chain_function (lame->sinkpad, gst_lame_chain);
495 gst_pad_set_setcaps_function (lame->sinkpad, gst_lame_sink_setcaps);
496 gst_element_add_pad (GST_ELEMENT (lame), lame->sinkpad);
498 lame->srcpad =
499 gst_pad_new_from_template (gst_static_pad_template_get
500 (&gst_lame_src_template), "src");
501 gst_element_add_pad (GST_ELEMENT (lame), lame->srcpad);
503 /* create an encoder state so we can ask about defaults */
504 lame->lgf = lame_init ();
506 lame->samplerate = 44100;
507 lame->num_channels = 2;
508 lame->setup = FALSE;
510 lame->bitrate = 128; /* lame_get_brate (lame->lgf);
511 * => 0/out of range */
512 lame->compression_ratio = 0.0; /* lame_get_compression_ratio (lame->lgf);
513 * => 0/out of range ...
514 * NOTE: 0.0 makes bitrate take precedence */
515 lame->quality = 5; /* lame_get_quality (lame->lgf);
516 * => -1/out of range */
517 lame->mode = lame_get_mode (lame->lgf);
518 lame->force_ms = lame_get_force_ms (lame->lgf);
519 lame->free_format = lame_get_free_format (lame->lgf);
520 lame->copyright = lame_get_copyright (lame->lgf);
521 lame->original = lame_get_original (lame->lgf);
522 lame->error_protection = lame_get_error_protection (lame->lgf);
523 lame->padding_type = lame_get_padding_type (lame->lgf);
524 lame->extension = lame_get_extension (lame->lgf);
525 lame->strict_iso = lame_get_strict_ISO (lame->lgf);
526 lame->disable_reservoir = lame_get_disable_reservoir (lame->lgf);
527 lame->vbr = vbr_off; /* lame_get_VBR (lame->lgf); */
528 lame->vbr_quality = 5;
529 lame->vbr_mean_bitrate = lame_get_VBR_mean_bitrate_kbps (lame->lgf);
530 lame->vbr_min_bitrate = lame_get_VBR_min_bitrate_kbps (lame->lgf);
531 lame->vbr_max_bitrate = 320; /* lame_get_VBR_max_bitrate_kbps (lame->lgf);
532 * => 0/no vbr possible */
533 lame->vbr_hard_min = lame_get_VBR_hard_min (lame->lgf);
534 /* lame->lowpass_freq = 50000; lame_get_lowpassfreq (lame->lgf);
535 * => 0/lowpass on everything ? */
536 lame->lowpass_freq = 0;
537 lame->lowpass_width = 0; /* lame_get_lowpasswidth (lame->lgf);
538 * => -1/out of range */
539 lame->highpass_freq = lame_get_highpassfreq (lame->lgf);
540 lame->highpass_width = 0; /* lame_get_highpasswidth (lame->lgf);
541 * => -1/out of range */
542 lame->ath_only = lame_get_ATHonly (lame->lgf);
543 lame->ath_short = lame_get_ATHshort (lame->lgf);
544 lame->no_ath = lame_get_noATH (lame->lgf);
545 /* lame->ath_type = lame_get_ATHtype (lame->lgf); */
546 lame->ath_lower = lame_get_ATHlower (lame->lgf);
547 lame->cwlimit = 8.8717; /* lame_get_cwlimit (lame->lgf); => 0 */
548 lame->allow_diff_short = lame_get_allow_diff_short (lame->lgf);
549 lame->no_short_blocks = TRUE; /* lame_get_no_short_blocks (lame->lgf); */
550 lame->emphasis = lame_get_emphasis (lame->lgf);
551 lame->xingheader = FALSE;
552 lame->preset = 0;
553 lame_close (lame->lgf);
554 lame->lgf = NULL;
556 GST_DEBUG_OBJECT (lame, "done initializing");
557 }
559 typedef struct _GstLameTagMatch GstLameTagMatch;
560 typedef void (*GstLameTagFunc) (lame_global_flags * gfp, const char *value);
562 struct _GstLameTagMatch
563 {
564 gchar *gstreamer_tag;
565 GstLameTagFunc tag_func;
566 };
568 static GstLameTagMatch tag_matches[] = {
569 {GST_TAG_TITLE, id3tag_set_title},
570 {GST_TAG_DATE, id3tag_set_year},
571 {GST_TAG_TRACK_NUMBER, id3tag_set_track},
572 {GST_TAG_COMMENT, id3tag_set_comment},
573 {GST_TAG_ARTIST, id3tag_set_artist},
574 {GST_TAG_ALBUM, id3tag_set_album},
575 {GST_TAG_GENRE, (GstLameTagFunc) id3tag_set_genre},
576 {NULL, NULL}
577 };
579 static void
580 add_one_tag (const GstTagList * list, const gchar * tag, gpointer user_data)
581 {
582 GstLame *lame;
583 gchar *value;
584 int i = 0;
586 lame = GST_LAME (user_data);
587 g_return_if_fail (lame != NULL);
589 while (tag_matches[i].gstreamer_tag != NULL) {
590 if (strcmp (tag, tag_matches[i].gstreamer_tag) == 0) {
591 break;
592 }
593 i++;
594 }
596 if (tag_matches[i].tag_func == NULL) {
597 GST_WARNING_OBJECT (lame,
598 "Couldn't find matching gstreamer tag for \"%s\"", tag);
599 return;
600 }
602 switch (gst_tag_get_type (tag)) {
603 case G_TYPE_UINT:{
604 guint ivalue;
606 if (!gst_tag_list_get_uint (list, tag, &ivalue)) {
607 GST_WARNING_OBJECT (lame, "Error reading \"%s\" tag value", tag);
608 return;
609 }
610 value = g_strdup_printf ("%u", ivalue);
611 break;
612 }
613 case G_TYPE_STRING:
614 if (!gst_tag_list_get_string (list, tag, &value)) {
615 GST_WARNING_OBJECT (lame, "Error reading \"%s\" tag value", tag);
616 return;
617 };
618 break;
619 default:
620 GST_WARNING_OBJECT (lame, "Couldn't write tag %s", tag);
621 break;
622 }
624 tag_matches[i].tag_func (lame->lgf, value);
626 if (gst_tag_get_type (tag) == G_TYPE_UINT) {
627 g_free (value);
628 }
629 }
631 static void
632 gst_lame_set_metadata (GstLame * lame)
633 {
634 const GstTagList *user_tags;
635 GstTagList *copy;
637 g_return_if_fail (lame != NULL);
639 user_tags = gst_tag_setter_get_list (GST_TAG_SETTER (lame));
640 if ((lame->tags == NULL) && (user_tags == NULL)) {
641 return;
642 }
643 copy = gst_tag_list_merge (user_tags, lame->tags,
644 gst_tag_setter_get_merge_mode (GST_TAG_SETTER (lame)));
645 gst_tag_list_foreach ((GstTagList *) copy, add_one_tag, lame);
647 gst_tag_list_free (copy);
648 }
652 static void
653 gst_lame_set_property (GObject * object, guint prop_id, const GValue * value,
654 GParamSpec * pspec)
655 {
656 GstLame *lame;
658 g_return_if_fail (GST_IS_LAME (object));
660 lame = GST_LAME (object);
662 switch (prop_id) {
663 case ARG_BITRATE:
664 lame->bitrate = g_value_get_int (value);
665 break;
666 case ARG_COMPRESSION_RATIO:
667 lame->compression_ratio = g_value_get_float (value);
668 break;
669 case ARG_QUALITY:
670 lame->quality = g_value_get_enum (value);
671 break;
672 case ARG_MODE:
673 lame->mode = g_value_get_enum (value);
674 break;
675 case ARG_FORCE_MS:
676 lame->force_ms = g_value_get_boolean (value);
677 break;
678 case ARG_FREE_FORMAT:
679 lame->free_format = g_value_get_boolean (value);
680 break;
681 case ARG_COPYRIGHT:
682 lame->copyright = g_value_get_boolean (value);
683 break;
684 case ARG_ORIGINAL:
685 lame->original = g_value_get_boolean (value);
686 break;
687 case ARG_ERROR_PROTECTION:
688 lame->error_protection = g_value_get_boolean (value);
689 break;
690 case ARG_PADDING_TYPE:
691 lame->padding_type = g_value_get_int (value);
692 break;
693 case ARG_EXTENSION:
694 lame->extension = g_value_get_boolean (value);
695 break;
696 case ARG_STRICT_ISO:
697 lame->strict_iso = g_value_get_boolean (value);
698 break;
699 case ARG_DISABLE_RESERVOIR:
700 lame->disable_reservoir = g_value_get_boolean (value);
701 break;
702 case ARG_VBR:
703 lame->vbr = g_value_get_enum (value);
704 break;
705 case ARG_VBR_QUALITY:
706 lame->vbr_quality = g_value_get_enum (value);
707 break;
708 case ARG_VBR_MEAN_BITRATE:
709 lame->vbr_mean_bitrate = g_value_get_int (value);
710 break;
711 case ARG_VBR_MIN_BITRATE:
712 lame->vbr_min_bitrate = g_value_get_int (value);
713 break;
714 case ARG_VBR_MAX_BITRATE:
715 lame->vbr_max_bitrate = g_value_get_int (value);
716 break;
717 case ARG_VBR_HARD_MIN:
718 lame->vbr_hard_min = g_value_get_int (value);
719 break;
720 case ARG_LOWPASS_FREQ:
721 lame->lowpass_freq = g_value_get_int (value);
722 break;
723 case ARG_LOWPASS_WIDTH:
724 lame->lowpass_width = g_value_get_int (value);
725 break;
726 case ARG_HIGHPASS_FREQ:
727 lame->highpass_freq = g_value_get_int (value);
728 break;
729 case ARG_HIGHPASS_WIDTH:
730 lame->highpass_width = g_value_get_int (value);
731 break;
732 case ARG_ATH_ONLY:
733 lame->ath_only = g_value_get_boolean (value);
734 break;
735 case ARG_ATH_SHORT:
736 lame->ath_short = g_value_get_boolean (value);
737 break;
738 case ARG_NO_ATH:
739 lame->no_ath = g_value_get_boolean (value);
740 break;
741 case ARG_ATH_LOWER:
742 lame->ath_lower = g_value_get_int (value);
743 break;
744 case ARG_CWLIMIT:
745 lame->cwlimit = g_value_get_int (value);
746 break;
747 case ARG_ALLOW_DIFF_SHORT:
748 lame->allow_diff_short = g_value_get_boolean (value);
749 break;
750 case ARG_NO_SHORT_BLOCKS:
751 lame->no_short_blocks = g_value_get_boolean (value);
752 break;
753 case ARG_EMPHASIS:
754 lame->emphasis = g_value_get_boolean (value);
755 break;
756 case ARG_XINGHEADER:
757 lame->xingheader = g_value_get_boolean (value);
758 break;
759 #ifdef GSTLAME_PRESET
760 case ARG_PRESET:
761 lame->preset = g_value_get_enum (value);
762 break;
763 #endif
764 default:
765 break;
766 }
768 }
770 static void
771 gst_lame_get_property (GObject * object, guint prop_id, GValue * value,
772 GParamSpec * pspec)
773 {
774 GstLame *lame;
776 g_return_if_fail (GST_IS_LAME (object));
778 lame = GST_LAME (object);
780 switch (prop_id) {
781 case ARG_BITRATE:
782 g_value_set_int (value, lame->bitrate);
783 break;
784 case ARG_COMPRESSION_RATIO:
785 g_value_set_float (value, lame->compression_ratio);
786 break;
787 case ARG_QUALITY:
788 g_value_set_enum (value, lame->quality);
789 break;
790 case ARG_MODE:
791 g_value_set_enum (value, lame->mode);
792 break;
793 case ARG_FORCE_MS:
794 g_value_set_boolean (value, lame->force_ms);
795 break;
796 case ARG_FREE_FORMAT:
797 g_value_set_boolean (value, lame->free_format);
798 break;
799 case ARG_COPYRIGHT:
800 g_value_set_boolean (value, lame->copyright);
801 break;
802 case ARG_ORIGINAL:
803 g_value_set_boolean (value, lame->original);
804 break;
805 case ARG_ERROR_PROTECTION:
806 g_value_set_boolean (value, lame->error_protection);
807 break;
808 case ARG_PADDING_TYPE:
809 g_value_set_enum (value, lame->padding_type);
810 break;
811 case ARG_EXTENSION:
812 g_value_set_boolean (value, lame->extension);
813 break;
814 case ARG_STRICT_ISO:
815 g_value_set_boolean (value, lame->strict_iso);
816 break;
817 case ARG_DISABLE_RESERVOIR:
818 g_value_set_boolean (value, lame->disable_reservoir);
819 break;
820 case ARG_VBR:
821 g_value_set_enum (value, lame->vbr);
822 break;
823 case ARG_VBR_QUALITY:
824 g_value_set_enum (value, lame->vbr_quality);
825 break;
826 case ARG_VBR_MEAN_BITRATE:
827 g_value_set_int (value, lame->vbr_mean_bitrate);
828 break;
829 case ARG_VBR_MIN_BITRATE:
830 g_value_set_int (value, lame->vbr_min_bitrate);
831 break;
832 case ARG_VBR_MAX_BITRATE:
833 g_value_set_int (value, lame->vbr_max_bitrate);
834 break;
835 case ARG_VBR_HARD_MIN:
836 g_value_set_int (value, lame->vbr_hard_min);
837 break;
838 case ARG_LOWPASS_FREQ:
839 g_value_set_int (value, lame->lowpass_freq);
840 break;
841 case ARG_LOWPASS_WIDTH:
842 g_value_set_int (value, lame->lowpass_width);
843 break;
844 case ARG_HIGHPASS_FREQ:
845 g_value_set_int (value, lame->highpass_freq);
846 break;
847 case ARG_HIGHPASS_WIDTH:
848 g_value_set_int (value, lame->highpass_width);
849 break;
850 case ARG_ATH_ONLY:
851 g_value_set_boolean (value, lame->ath_only);
852 break;
853 case ARG_ATH_SHORT:
854 g_value_set_boolean (value, lame->ath_short);
855 break;
856 case ARG_NO_ATH:
857 g_value_set_boolean (value, lame->no_ath);
858 break;
859 case ARG_ATH_LOWER:
860 g_value_set_int (value, lame->ath_lower);
861 break;
862 case ARG_CWLIMIT:
863 g_value_set_int (value, lame->cwlimit);
864 break;
865 case ARG_ALLOW_DIFF_SHORT:
866 g_value_set_boolean (value, lame->allow_diff_short);
867 break;
868 case ARG_NO_SHORT_BLOCKS:
869 g_value_set_boolean (value, lame->no_short_blocks);
870 break;
871 case ARG_EMPHASIS:
872 g_value_set_boolean (value, lame->emphasis);
873 break;
874 case ARG_XINGHEADER:
875 g_value_set_boolean (value, lame->xingheader);
876 break;
877 #ifdef GSTLAME_PRESET
878 case ARG_PRESET:
879 g_value_set_enum (value, lame->preset);
880 break;
881 #endif
882 default:
883 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
884 break;
885 }
886 }
888 static gboolean
889 gst_lame_sink_event (GstPad * pad, GstEvent * event)
890 {
891 GstLame *lame;
893 lame = GST_LAME (gst_pad_get_parent (pad));
895 switch (GST_EVENT_TYPE (event)) {
896 case GST_EVENT_EOS:
897 GST_DEBUG_OBJECT (lame, "handling EOS event");
898 /* FIXME, push last data packet */
900 gst_pad_push_event (lame->srcpad, event);
901 break;
902 case GST_EVENT_FLUSH_START:
903 GST_DEBUG_OBJECT (lame, "handling FLUSH start event");
904 /* forward event */
905 gst_pad_push_event (lame->srcpad, event);
907 /* make streaming stop */
908 GST_STREAM_LOCK (pad);
909 GST_STREAM_UNLOCK (pad);
910 break;
911 case GST_EVENT_FLUSH_STOP:
912 {
913 guchar *mp3_data = NULL;
914 gint mp3_buffer_size, mp3_size = 0;
916 GST_DEBUG_OBJECT (lame, "handling FLUSH stop event");
918 /* clear buffers */
919 GST_STREAM_LOCK (pad);
920 mp3_buffer_size = 7200;
921 mp3_data = g_malloc (mp3_buffer_size);
922 mp3_size = lame_encode_flush (lame->lgf, mp3_data, mp3_buffer_size);
924 gst_pad_push_event (lame->srcpad, event);
925 GST_STREAM_UNLOCK (pad);
926 break;
927 }
928 case GST_EVENT_TAG:
929 GST_DEBUG_OBJECT (lame, "handling TAG event");
930 if (lame->tags) {
931 GstTagList *taglist;
933 gst_event_parse_tag (event, &taglist),
934 gst_tag_list_insert (lame->tags, taglist,
935 gst_tag_setter_get_merge_mode (GST_TAG_SETTER (lame)));
936 } else {
937 g_assert_not_reached ();
938 }
939 gst_pad_push_event (lame->srcpad, event);
940 break;
941 default:
942 gst_pad_push_event (lame->srcpad, event);
943 break;
944 }
945 return TRUE;
946 }
948 static GstFlowReturn
949 gst_lame_chain (GstPad * pad, GstBuffer * buf)
950 {
951 GstLame *lame;
952 guchar *mp3_data;
953 gint mp3_buffer_size, mp3_size;
954 gint64 duration;
955 GstFlowReturn result;
956 gint num_samples;
958 lame = GST_LAME (gst_pad_get_parent (pad));
960 GST_LOG_OBJECT (lame, "entered chain");
962 if (!lame->setup)
963 goto not_setup;
965 num_samples = GST_BUFFER_SIZE (buf) / 2;
967 /* allocate space for output */
968 mp3_buffer_size = 1.25 * num_samples + 7200;
969 mp3_data = g_malloc (mp3_buffer_size);
971 /* lame seems to be too stupid to get mono interleaved going */
972 if (lame->num_channels == 1) {
973 mp3_size = lame_encode_buffer (lame->lgf,
974 (short int *) (GST_BUFFER_DATA (buf)),
975 (short int *) (GST_BUFFER_DATA (buf)),
976 num_samples, mp3_data, mp3_buffer_size);
977 } else {
978 mp3_size = lame_encode_buffer_interleaved (lame->lgf,
979 (short int *) (GST_BUFFER_DATA (buf)),
980 num_samples / lame->num_channels, mp3_data, mp3_buffer_size);
981 }
983 GST_LOG_OBJECT (lame, "encoded %d bytes of audio to %d bytes of mp3",
984 GST_BUFFER_SIZE (buf), mp3_size);
986 duration = (GST_SECOND * GST_BUFFER_SIZE (buf) /
987 (2 * lame->samplerate * lame->num_channels));
989 if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE &&
990 GST_BUFFER_DURATION (buf) != duration)
991 GST_DEBUG_OBJECT (lame, "incoming buffer had incorrect duration %"
992 GST_TIME_FORMAT "outgoing buffer will have correct duration %"
993 GST_TIME_FORMAT,
994 GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_TIME_ARGS (duration));
996 if (lame->last_ts == GST_CLOCK_TIME_NONE) {
997 lame->last_ts = GST_BUFFER_TIMESTAMP (buf);
998 lame->last_offs = GST_BUFFER_OFFSET (buf);
999 lame->last_duration = duration;
1000 } else {
1001 lame->last_duration += duration;
1002 }
1004 gst_buffer_unref (buf);
1006 if (mp3_size < 0) {
1007 g_warning ("error %d", mp3_size);
1008 }
1010 if (mp3_size > 0) {
1011 GstBuffer *outbuf;
1013 outbuf = gst_buffer_new ();
1014 GST_BUFFER_DATA (outbuf) = mp3_data;
1015 GST_BUFFER_MALLOCDATA (outbuf) = mp3_data;
1016 GST_BUFFER_SIZE (outbuf) = mp3_size;
1017 GST_BUFFER_TIMESTAMP (outbuf) = lame->last_ts;
1018 GST_BUFFER_OFFSET (outbuf) = lame->last_offs;
1019 GST_BUFFER_DURATION (outbuf) = lame->last_duration;
1021 result = gst_pad_push (lame->srcpad, outbuf);
1023 lame->last_ts = GST_CLOCK_TIME_NONE;
1024 } else {
1025 g_free (mp3_data);
1026 result = GST_FLOW_OK;
1027 }
1028 gst_object_unref (lame);
1030 return result;
1032 /* ERRORS */
1033 not_setup:
1034 {
1035 gst_buffer_unref (buf);
1036 GST_ELEMENT_ERROR (lame, CORE, NEGOTIATION, (NULL),
1037 ("encoder not initialized (input is not audio?)"));
1038 gst_object_unref (lame);
1039 return GST_FLOW_ERROR;
1040 }
1041 }
1043 /* set up the encoder state */
1044 static gboolean
1045 gst_lame_setup (GstLame * lame)
1046 {
1047 #define CHECK_ERROR(command) G_STMT_START {\
1048 if ((command) < 0) { \
1049 GST_ERROR_OBJECT (lame, "setup failed: " G_STRINGIFY (command)); \
1050 return FALSE; \
1051 } \
1052 }G_STMT_END
1053 int retval;
1055 GST_DEBUG_OBJECT (lame, "starting setup");
1057 /* check if we're already setup; if we are, we might want to check
1058 * if this initialization is compatible with the previous one */
1059 /* FIXME: do this */
1060 if (lame->setup) {
1061 GST_WARNING_OBJECT (lame, "already setup");
1062 lame->setup = FALSE;
1063 }
1065 lame->lgf = lame_init ();
1066 id3tag_init (lame->lgf);
1068 /* let lame choose a default samplerate */
1069 lame_set_out_samplerate (lame->lgf, 0);
1071 /* copy the parameters over */
1072 lame_set_in_samplerate (lame->lgf, lame->samplerate);
1074 /* force mono encoding if we only have one channel */
1075 if (lame->num_channels == 1)
1076 lame->mode = 3;
1078 CHECK_ERROR (lame_set_num_channels (lame->lgf, lame->num_channels));
1079 CHECK_ERROR (lame_set_brate (lame->lgf, lame->bitrate));
1080 CHECK_ERROR (lame_set_compression_ratio (lame->lgf, lame->compression_ratio));
1081 CHECK_ERROR (lame_set_quality (lame->lgf, lame->quality));
1082 CHECK_ERROR (lame_set_mode (lame->lgf, lame->mode));
1083 CHECK_ERROR (lame_set_force_ms (lame->lgf, lame->force_ms));
1084 CHECK_ERROR (lame_set_free_format (lame->lgf, lame->free_format));
1085 CHECK_ERROR (lame_set_copyright (lame->lgf, lame->copyright));
1086 CHECK_ERROR (lame_set_original (lame->lgf, lame->original));
1087 CHECK_ERROR (lame_set_error_protection (lame->lgf, lame->error_protection));
1088 CHECK_ERROR (lame_set_padding_type (lame->lgf, lame->padding_type));
1089 CHECK_ERROR (lame_set_extension (lame->lgf, lame->extension));
1090 CHECK_ERROR (lame_set_strict_ISO (lame->lgf, lame->strict_iso));
1091 CHECK_ERROR (lame_set_disable_reservoir (lame->lgf, lame->disable_reservoir));
1092 CHECK_ERROR (lame_set_VBR (lame->lgf, lame->vbr));
1093 CHECK_ERROR (lame_set_VBR_q (lame->lgf, lame->vbr_quality));
1094 CHECK_ERROR (lame_set_VBR_mean_bitrate_kbps (lame->lgf,
1095 lame->vbr_mean_bitrate));
1096 CHECK_ERROR (lame_set_VBR_min_bitrate_kbps (lame->lgf,
1097 lame->vbr_min_bitrate));
1098 CHECK_ERROR (lame_set_VBR_max_bitrate_kbps (lame->lgf,
1099 lame->vbr_max_bitrate));
1100 CHECK_ERROR (lame_set_VBR_hard_min (lame->lgf, lame->vbr_hard_min));
1101 CHECK_ERROR (lame_set_lowpassfreq (lame->lgf, lame->lowpass_freq));
1102 CHECK_ERROR (lame_set_lowpasswidth (lame->lgf, lame->lowpass_width));
1103 CHECK_ERROR (lame_set_highpassfreq (lame->lgf, lame->highpass_freq));
1104 CHECK_ERROR (lame_set_highpasswidth (lame->lgf, lame->highpass_width));
1105 CHECK_ERROR (lame_set_ATHonly (lame->lgf, lame->ath_only));
1106 CHECK_ERROR (lame_set_ATHshort (lame->lgf, lame->ath_short));
1107 CHECK_ERROR (lame_set_noATH (lame->lgf, lame->no_ath));
1108 CHECK_ERROR (lame_set_ATHlower (lame->lgf, lame->ath_lower));
1109 CHECK_ERROR (lame_set_cwlimit (lame->lgf, lame->cwlimit));
1110 CHECK_ERROR (lame_set_allow_diff_short (lame->lgf, lame->allow_diff_short));
1111 CHECK_ERROR (lame_set_no_short_blocks (lame->lgf, lame->no_short_blocks));
1112 CHECK_ERROR (lame_set_emphasis (lame->lgf, lame->emphasis));
1113 CHECK_ERROR (lame_set_bWriteVbrTag (lame->lgf, lame->xingheader ? 1 : 0));
1114 #ifdef GSTLAME_PRESET
1115 if (lame->preset > 0) {
1116 CHECK_ERROR (lame_set_preset (lame->lgf, lame->preset));
1117 }
1118 #endif
1119 gst_lame_set_metadata (lame);
1121 /* initialize the lame encoder */
1122 if ((retval = lame_init_params (lame->lgf)) >= 0) {
1123 lame->setup = TRUE;
1124 /* FIXME: it would be nice to print out the mode here */
1125 GST_INFO ("lame encoder setup (%d kbit/s, %d Hz, %d channels)",
1126 lame->bitrate, lame->samplerate, lame->num_channels);
1127 } else {
1128 GST_ERROR_OBJECT (lame, "lame_init_params returned %d", retval);
1129 }
1131 GST_DEBUG_OBJECT (lame, "done with setup");
1133 return lame->setup;
1134 #undef CHECK_ERROR
1135 }
1137 static GstStateChangeReturn
1138 gst_lame_change_state (GstElement * element, GstStateChange transition)
1139 {
1140 GstLame *lame;
1141 GstStateChangeReturn result;
1143 lame = GST_LAME (element);
1146 switch (transition) {
1147 case GST_STATE_CHANGE_NULL_TO_READY:
1148 lame->tags = gst_tag_list_new ();
1149 case GST_STATE_CHANGE_READY_TO_PAUSED:
1150 lame->last_ts = GST_CLOCK_TIME_NONE;
1151 break;
1152 default:
1153 break;
1154 }
1156 /* if we haven't failed already, give the parent class a chance to ;-) */
1157 result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1159 switch (transition) {
1160 case GST_STATE_CHANGE_READY_TO_NULL:
1161 gst_tag_list_free (lame->tags);
1162 break;
1163 default:
1164 break;
1165 }
1167 return result;
1168 }
1170 static gboolean
1171 plugin_init (GstPlugin * plugin)
1172 {
1173 if (!gst_element_register (plugin, "lame", GST_RANK_NONE, GST_TYPE_LAME))
1174 return FALSE;
1176 GST_DEBUG_CATEGORY_INIT (debug, "lame", 0, "lame mp3 encoder");
1177 return TRUE;
1178 }
1180 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1181 GST_VERSION_MINOR,
1182 "lame",
1183 "Encode MP3's with LAME",
1184 plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)