1 /* AVI muxer plugin for GStreamer
2 * Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
3 * (C) 2006 Mark Nauwelaerts <manauw@skynet.be>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
22 * - the old avimuxer (by Wim Taymans)
23 * - xawtv's aviwriter (by Gerd Knorr)
24 * - mjpegtools' avilib (by Rainer Johanni)
25 * - openDML large-AVI docs
29 * SECTION:element-avimux
31 * Muxes raw or compressed audio and/or video streams into an AVI file.
34 * <title>Example launch lines</title>
35 * <para>(write everything in one line, without the backslash characters)</para>
37 * gst-launch videotestsrc num-buffers=250 \
38 * ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,framerate=(fraction)25/1' \
40 * audiotestsrc num-buffers=440 ! audioconvert \
41 * ! 'audio/x-raw-int,rate=44100,channels=2' ! queue ! mux. \
42 * avimux name=mux ! filesink location=test.avi
43 * ]| This will create an .AVI file containing an uncompressed video stream
44 * with a test picture and an uncompressed audio stream containing a
47 * gst-launch videotestsrc num-buffers=250 \
48 * ! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,framerate=(fraction)25/1' \
49 * ! xvidenc ! queue ! mux. \
50 * audiotestsrc num-buffers=440 ! audioconvert ! 'audio/x-raw-int,rate=44100,channels=2' \
51 * ! lame ! queue ! mux. \
52 * avimux name=mux ! filesink location=test.avi
53 * ]| This will create an .AVI file containing the same test video and sound
54 * as above, only that both streams will be compressed this time. This will
55 * only work if you have the necessary encoder elements installed of course.
63 #include "gst/gst-i18n-plugin.h"
68 #include <gst/video/video.h>
69 #include <gst/base/gstbytewriter.h>
71 #include "gstavimux.h"
73 GST_DEBUG_CATEGORY_STATIC (avimux_debug);
74 #define GST_CAT_DEFAULT avimux_debug
82 #define DEFAULT_BIGFILE TRUE
84 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
87 GST_STATIC_CAPS ("video/x-msvideo")
90 static GstStaticPadTemplate video_sink_factory =
91 GST_STATIC_PAD_TEMPLATE ("video_%d",
94 GST_STATIC_CAPS ("video/x-raw-yuv, "
95 "format = (fourcc) { YUY2, I420 }, "
96 "width = (int) [ 16, 4096 ], "
97 "height = (int) [ 16, 4096 ], "
98 "framerate = (fraction) [ 0, MAX ]; "
100 "width = (int) [ 16, 4096 ], "
101 "height = (int) [ 16, 4096 ], "
102 "framerate = (fraction) [ 0, MAX ]; "
104 "width = (int) [ 16, 4096 ], "
105 "height = (int) [ 16, 4096 ], "
106 "framerate = (fraction) [ 0, MAX ], "
107 "divxversion = (int) [ 3, 5 ]; "
109 "width = (int) [ 16, 4096 ], "
110 "height = (int) [ 16, 4096 ], "
111 "framerate = (fraction) [ 0, MAX ]; "
113 "width = (int) [ 16, 4096 ], "
114 "height = (int) [ 16, 4096 ], "
115 "framerate = (fraction) [ 0, MAX ]; "
117 "width = (int) [ 16, 4096 ], "
118 "height = (int) [ 16, 4096 ], "
119 "framerate = (fraction) [ 0, MAX ], "
120 "msmpegversion = (int) [ 41, 43 ]; "
122 "width = (int) [ 16, 4096 ], "
123 "height = (int) [ 16, 4096 ], "
124 "framerate = (fraction) [ 0, MAX ], "
125 "mpegversion = (int) { 1, 2, 4}, "
126 "systemstream = (boolean) FALSE; "
128 "width = (int) [ 16, 4096 ], "
129 "height = (int) [ 16, 4096 ], "
130 "framerate = (fraction) [ 0, MAX ]; "
132 "stream-format = (string) byte-stream, "
133 "alignment = (string) au, "
134 "width = (int) [ 16, 4096 ], "
135 "height = (int) [ 16, 4096 ], "
136 "framerate = (fraction) [ 0, MAX ]; "
138 "width = (int) 720, "
139 "height = (int) { 576, 480 }, "
140 "framerate = (fraction) [ 0, MAX ], "
141 "systemstream = (boolean) FALSE; "
143 "width = (int) [ 16, 4096 ], "
144 "height = (int) [ 16, 4096 ], " "framerate = (fraction) [ 0, MAX ];"
146 "width = (int) [ 16, 4096 ], "
147 "height = (int) [ 16, 4096 ], " "framerate = (fraction) [ 0, MAX ], "
148 "wmvversion = (int) [ 1, 3];"
150 "width = (int) [ 1, 2147483647 ], "
151 "height = (int) [ 1, 2147483647 ], "
152 "framerate = (fraction) [ 0, MAX ];"
154 "width = (int) [ 1, 2147483647 ], "
155 "height = (int) [ 1, 2147483647 ], "
156 "framerate = (fraction) [ 0, MAX ]")
159 static GstStaticPadTemplate audio_sink_factory =
160 GST_STATIC_PAD_TEMPLATE ("audio_%d",
163 GST_STATIC_CAPS ("audio/x-raw-int, "
164 "endianness = (int) LITTLE_ENDIAN, "
165 "signed = (boolean) { TRUE, FALSE }, "
166 "width = (int) { 8, 16 }, "
167 "depth = (int) { 8, 16 }, "
168 "rate = (int) [ 1000, 96000 ], "
169 "channels = (int) [ 1, 2 ]; "
171 "mpegversion = (int) 1, "
172 "layer = (int) [ 1, 3 ], "
173 "rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ]; "
175 "mpegversion = (int) 4, "
176 "stream-format = (string) raw, "
177 "rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ]; "
178 /*#if 0 VC6 doesn't support #if here ...
180 "rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ]; "
183 "rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ]; "
185 "rate = (int) [ 1000, 48000 ], " "channels = (int) [ 1, 2 ]; "
187 "rate = (int) [ 1000, 48000 ], " "channels = (int) [ 1, 2 ]; "
189 "rate = (int) [ 1000, 96000 ], " "channels = (int) [ 1, 2 ], "
190 "wmaversion = (int) [ 1, 2 ] ")
193 static void gst_avi_mux_base_init (gpointer g_class);
194 static void gst_avi_mux_class_init (GstAviMuxClass * klass);
195 static void gst_avi_mux_init (GstAviMux * avimux);
196 static void gst_avi_mux_pad_reset (GstAviPad * avipad, gboolean free);
198 static GstFlowReturn gst_avi_mux_collect_pads (GstCollectPads * pads,
200 static gboolean gst_avi_mux_handle_event (GstPad * pad, GstEvent * event);
201 static GstPad *gst_avi_mux_request_new_pad (GstElement * element,
202 GstPadTemplate * templ, const gchar * name);
203 static void gst_avi_mux_release_pad (GstElement * element, GstPad * pad);
204 static void gst_avi_mux_set_property (GObject * object,
205 guint prop_id, const GValue * value, GParamSpec * pspec);
206 static void gst_avi_mux_get_property (GObject * object,
207 guint prop_id, GValue * value, GParamSpec * pspec);
208 static GstStateChangeReturn gst_avi_mux_change_state (GstElement * element,
209 GstStateChange transition);
211 static GstElementClass *parent_class = NULL;
214 gst_avi_mux_get_type (void)
216 static GType avimux_type = 0;
219 static const GTypeInfo avimux_info = {
220 sizeof (GstAviMuxClass),
221 gst_avi_mux_base_init,
223 (GClassInitFunc) gst_avi_mux_class_init,
228 (GInstanceInitFunc) gst_avi_mux_init,
230 static const GInterfaceInfo tag_setter_info = {
237 g_type_register_static (GST_TYPE_ELEMENT, "GstAviMux", &avimux_info, 0);
238 g_type_add_interface_static (avimux_type, GST_TYPE_TAG_SETTER,
245 gst_avi_mux_base_init (gpointer g_class)
247 GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
249 gst_element_class_add_static_pad_template (element_class, &src_factory);
250 gst_element_class_add_static_pad_template (element_class,
251 &audio_sink_factory);
252 gst_element_class_add_static_pad_template (element_class,
253 &video_sink_factory);
255 gst_element_class_set_details_simple (element_class, "Avi muxer",
257 "Muxes audio and video into an avi stream",
258 "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
260 GST_DEBUG_CATEGORY_INIT (avimux_debug, "avimux", 0, "Muxer for AVI streams");
264 gst_avi_mux_finalize (GObject * object)
266 GstAviMux *mux = GST_AVI_MUX (object);
269 /* completely free each sinkpad */
270 node = mux->sinkpads;
272 GstAviPad *avipad = (GstAviPad *) node->data;
276 gst_avi_mux_pad_reset (avipad, TRUE);
279 g_slist_free (mux->sinkpads);
280 mux->sinkpads = NULL;
285 gst_object_unref (mux->collect);
287 G_OBJECT_CLASS (parent_class)->finalize (object);
291 gst_avi_mux_class_init (GstAviMuxClass * klass)
293 GObjectClass *gobject_class;
294 GstElementClass *gstelement_class;
296 gobject_class = (GObjectClass *) klass;
297 gstelement_class = (GstElementClass *) klass;
299 parent_class = g_type_class_peek_parent (klass);
301 gobject_class->get_property = gst_avi_mux_get_property;
302 gobject_class->set_property = gst_avi_mux_set_property;
303 gobject_class->finalize = gst_avi_mux_finalize;
305 g_object_class_install_property (gobject_class, ARG_BIGFILE,
306 g_param_spec_boolean ("bigfile", "Bigfile Support (>2GB)",
307 "Support for openDML-2.0 (big) AVI files", DEFAULT_BIGFILE,
308 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
310 gstelement_class->request_new_pad =
311 GST_DEBUG_FUNCPTR (gst_avi_mux_request_new_pad);
312 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_avi_mux_release_pad);
313 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_avi_mux_change_state);
316 /* reset pad to initial state
317 * free - if true, release all, not only stream related, data */
319 gst_avi_mux_pad_reset (GstAviPad * avipad, gboolean free)
322 memset (&(avipad->hdr), 0, sizeof (gst_riff_strh));
324 memset (&(avipad->idx[0]), 0, sizeof (avipad->idx));
327 g_free (avipad->tag);
329 g_free (avipad->idx_tag);
330 avipad->idx_tag = NULL;
333 if (avipad->is_video) {
334 GstAviVideoPad *vidpad = (GstAviVideoPad *) avipad;
336 avipad->hdr.type = GST_MAKE_FOURCC ('v', 'i', 'd', 's');
337 if (vidpad->vids_codec_data) {
338 gst_buffer_unref (vidpad->vids_codec_data);
339 vidpad->vids_codec_data = NULL;
342 if (vidpad->prepend_buffer) {
343 gst_buffer_unref (vidpad->prepend_buffer);
344 vidpad->prepend_buffer = NULL;
347 memset (&(vidpad->vids), 0, sizeof (gst_riff_strf_vids));
348 memset (&(vidpad->vprp), 0, sizeof (gst_riff_vprp));
350 GstAviAudioPad *audpad = (GstAviAudioPad *) avipad;
354 avipad->hdr.type = GST_MAKE_FOURCC ('a', 'u', 'd', 's');
355 if (audpad->auds_codec_data) {
356 gst_buffer_unref (audpad->auds_codec_data);
357 audpad->auds_codec_data = NULL;
360 memset (&(audpad->auds), 0, sizeof (gst_riff_strf_auds));
365 gst_avi_mux_reset (GstAviMux * avimux)
367 GSList *node, *newlist = NULL;
369 /* free and reset each sinkpad */
370 node = avimux->sinkpads;
372 GstAviPad *avipad = (GstAviPad *) node->data;
376 gst_avi_mux_pad_reset (avipad, FALSE);
377 /* if this pad has collectdata, keep it, otherwise dump it completely */
379 newlist = g_slist_append (newlist, avipad);
381 gst_avi_mux_pad_reset (avipad, TRUE);
386 /* free the old list of sinkpads, only keep the real collecting ones */
387 g_slist_free (avimux->sinkpads);
388 avimux->sinkpads = newlist;
391 avimux->num_frames = 0;
392 memset (&(avimux->avi_hdr), 0, sizeof (gst_riff_avih));
393 avimux->avi_hdr.max_bps = 10000000;
394 avimux->codec_data_size = 0;
396 if (avimux->tags_snap) {
397 gst_tag_list_free (avimux->tags_snap);
398 avimux->tags_snap = NULL;
401 g_free (avimux->idx);
405 avimux->write_header = TRUE;
408 gst_tag_setter_reset_tags (GST_TAG_SETTER (avimux));
412 gst_avi_mux_init (GstAviMux * avimux)
414 avimux->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
415 gst_pad_use_fixed_caps (avimux->srcpad);
416 gst_element_add_pad (GST_ELEMENT (avimux), avimux->srcpad);
419 avimux->enable_large_avi = DEFAULT_BIGFILE;
421 avimux->collect = gst_collect_pads_new ();
422 gst_collect_pads_set_function (avimux->collect,
423 (GstCollectPadsFunction) (GST_DEBUG_FUNCPTR (gst_avi_mux_collect_pads)),
426 /* set to clean state */
427 gst_avi_mux_reset (avimux);
431 gst_avi_mux_vidsink_set_caps (GstPad * pad, GstCaps * vscaps)
434 GstAviVideoPad *avipad;
435 GstAviCollectData *collect_pad;
436 GstStructure *structure;
437 const gchar *mimetype;
438 const GValue *fps, *par;
439 const GValue *codec_data;
442 gboolean codec_data_in_headers = TRUE;
444 avimux = GST_AVI_MUX (gst_pad_get_parent (pad));
446 /* find stream data */
447 collect_pad = (GstAviCollectData *) gst_pad_get_element_private (pad);
448 g_assert (collect_pad);
449 avipad = (GstAviVideoPad *) collect_pad->avipad;
451 g_assert (avipad->parent.is_video);
452 g_assert (avipad->parent.hdr.type == GST_MAKE_FOURCC ('v', 'i', 'd', 's'));
454 GST_DEBUG_OBJECT (avimux, "%s:%s, caps=%" GST_PTR_FORMAT,
455 GST_DEBUG_PAD_NAME (pad), vscaps);
457 structure = gst_caps_get_structure (vscaps, 0);
458 mimetype = gst_structure_get_name (structure);
461 avipad->vids.size = sizeof (gst_riff_strf_vids);
462 avipad->vids.planes = 1;
463 if (!gst_structure_get_int (structure, "width", &width) ||
464 !gst_structure_get_int (structure, "height", &height)) {
468 avipad->vids.width = width;
469 avipad->vids.height = height;
471 fps = gst_structure_get_value (structure, "framerate");
472 if (fps == NULL || !GST_VALUE_HOLDS_FRACTION (fps))
475 avipad->parent.hdr.rate = gst_value_get_fraction_numerator (fps);
476 avipad->parent.hdr.scale = gst_value_get_fraction_denominator (fps);
478 /* (pixel) aspect ratio data, if any */
479 par = gst_structure_get_value (structure, "pixel-aspect-ratio");
480 /* only use video properties header if there is non-trivial aspect info */
481 if (par && GST_VALUE_HOLDS_FRACTION (par) &&
482 ((par_n = gst_value_get_fraction_numerator (par)) !=
483 (par_d = gst_value_get_fraction_denominator (par)))) {
484 GValue to_ratio = { 0, };
485 guint ratio_n, ratio_d;
487 /* some fraction voodoo to obtain simplest possible ratio */
488 g_value_init (&to_ratio, GST_TYPE_FRACTION);
489 gst_value_set_fraction (&to_ratio, width * par_n, height * par_d);
490 ratio_n = gst_value_get_fraction_numerator (&to_ratio);
491 ratio_d = gst_value_get_fraction_denominator (&to_ratio);
492 GST_DEBUG_OBJECT (avimux, "generating vprp data with aspect ratio %d/%d",
495 avipad->vprp.vert_rate = avipad->parent.hdr.rate / avipad->parent.hdr.scale;
496 avipad->vprp.hor_t_total = width;
497 avipad->vprp.vert_lines = height;
498 avipad->vprp.aspect = (ratio_n) << 16 | (ratio_d & 0xffff);
499 avipad->vprp.width = width;
500 avipad->vprp.height = height;
501 avipad->vprp.fields = 1;
502 avipad->vprp.field_info[0].compressed_bm_height = height;
503 avipad->vprp.field_info[0].compressed_bm_width = width;
504 avipad->vprp.field_info[0].valid_bm_height = height;
505 avipad->vprp.field_info[0].valid_bm_width = width;
508 if (!strcmp (mimetype, "video/x-raw-yuv")) {
511 gst_structure_get_fourcc (structure, "format", &format);
512 avipad->vids.compression = format;
514 case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
515 avipad->vids.bit_cnt = 16;
517 case GST_MAKE_FOURCC ('I', '4', '2', '0'):
518 avipad->vids.bit_cnt = 12;
522 avipad->vids.bit_cnt = 24;
523 avipad->vids.compression = 0;
526 if (!strcmp (mimetype, "video/x-huffyuv")) {
527 avipad->vids.compression = GST_MAKE_FOURCC ('H', 'F', 'Y', 'U');
528 } else if (!strcmp (mimetype, "image/jpeg")) {
529 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'J', 'P', 'G');
530 } else if (!strcmp (mimetype, "video/x-divx")) {
533 gst_structure_get_int (structure, "divxversion", &divxversion);
534 switch (divxversion) {
536 avipad->vids.compression = GST_MAKE_FOURCC ('D', 'I', 'V', '3');
539 avipad->vids.compression = GST_MAKE_FOURCC ('D', 'I', 'V', 'X');
542 avipad->vids.compression = GST_MAKE_FOURCC ('D', 'X', '5', '0');
545 } else if (!strcmp (mimetype, "video/x-xvid")) {
546 avipad->vids.compression = GST_MAKE_FOURCC ('X', 'V', 'I', 'D');
547 } else if (!strcmp (mimetype, "video/x-3ivx")) {
548 avipad->vids.compression = GST_MAKE_FOURCC ('3', 'I', 'V', '2');
549 } else if (gst_structure_has_name (structure, "video/x-msmpeg")) {
552 gst_structure_get_int (structure, "msmpegversion", &msmpegversion);
553 switch (msmpegversion) {
555 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', 'G', '4');
558 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', '4', '2');
561 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', '4', '3');
564 GST_INFO ("unhandled msmpegversion : %d, fall back to fourcc=MPEG",
566 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', 'E', 'G');
569 } else if (!strcmp (mimetype, "video/x-dv")) {
570 avipad->vids.compression = GST_MAKE_FOURCC ('D', 'V', 'S', 'D');
571 } else if (!strcmp (mimetype, "video/x-h263")) {
572 avipad->vids.compression = GST_MAKE_FOURCC ('H', '2', '6', '3');
573 } else if (!strcmp (mimetype, "video/x-h264")) {
574 avipad->vids.compression = GST_MAKE_FOURCC ('H', '2', '6', '4');
575 } else if (!strcmp (mimetype, "video/mpeg")) {
578 gst_structure_get_int (structure, "mpegversion", &mpegversion);
580 switch (mpegversion) {
582 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', 'G', '2');
585 /* mplayer/ffmpeg might not work with DIVX, but with FMP4 */
586 avipad->vids.compression = GST_MAKE_FOURCC ('D', 'I', 'V', 'X');
588 /* DIVX/XVID in AVI store the codec_data chunk as part of the
589 first data buffer. So for this case, we prepend the codec_data
590 blob (if any) to that first buffer */
591 codec_data_in_headers = FALSE;
594 GST_INFO ("unhandled mpegversion : %d, fall back to fourcc=MPEG",
596 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'P', 'E', 'G');
599 } else if (!strcmp (mimetype, "video/x-wmv")) {
602 if (gst_structure_get_int (structure, "wmvversion", &wmvversion)) {
603 switch (wmvversion) {
605 avipad->vids.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '1');
608 avipad->vids.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '2');
611 avipad->vids.compression = GST_MAKE_FOURCC ('W', 'M', 'V', '3');
616 } else if (!strcmp (mimetype, "image/x-jpc")) {
617 avipad->vids.compression = GST_MAKE_FOURCC ('M', 'J', '2', 'C');
618 } else if (!strcmp (mimetype, "video/x-vp8")) {
619 avipad->vids.compression = GST_MAKE_FOURCC ('V', 'P', '8', '0');
622 if (!avipad->vids.compression)
626 /* codec initialization data, if any */
627 codec_data = gst_structure_get_value (structure, "codec_data");
629 if (codec_data_in_headers) {
630 avipad->vids_codec_data = gst_value_get_buffer (codec_data);
631 gst_buffer_ref (avipad->vids_codec_data);
632 /* keep global track of size */
633 avimux->codec_data_size += GST_BUFFER_SIZE (avipad->vids_codec_data);
635 avipad->prepend_buffer =
636 gst_buffer_ref (gst_value_get_buffer (codec_data));
640 avipad->parent.hdr.fcc_handler = avipad->vids.compression;
641 avipad->vids.image_size = avipad->vids.height * avipad->vids.width;
642 /* hm, maybe why avi only handles one stream well ... */
643 avimux->avi_hdr.width = avipad->vids.width;
644 avimux->avi_hdr.height = avipad->vids.height;
645 avimux->avi_hdr.us_frame = 1000000. * avipad->parent.hdr.scale /
646 avipad->parent.hdr.rate;
648 gst_object_unref (avimux);
653 GST_WARNING_OBJECT (avimux, "refused caps %" GST_PTR_FORMAT, vscaps);
654 gst_object_unref (avimux);
660 gst_avi_mux_audsink_scan_mpeg_audio (GstAviMux * avimux, GstAviPad * avipad,
671 data = GST_BUFFER_DATA (buffer);
672 size = GST_BUFFER_SIZE (buffer);
677 header = GST_READ_UINT32_BE (data);
679 if ((header & 0xffe00000) != 0xffe00000)
682 /* thanks go to mp3parse */
683 if (header & (1 << 20)) {
684 lsf = (header & (1 << 19)) ? 0 : 1;
691 version = 1 + lsf + mpg25;
692 layer = 4 - ((header >> 17) & 0x3);
694 /* see http://www.codeproject.com/audio/MPEGAudioInfo.asp */
699 else if (version == 1) {
702 /* MPEG-2 or "2.5" */
706 if (G_UNLIKELY (avipad->hdr.scale <= 1))
707 avipad->hdr.scale = spf;
708 else if (G_UNLIKELY (avipad->hdr.scale != spf)) {
709 GST_WARNING_OBJECT (avimux, "input mpeg audio has varying frame size");
718 GST_WARNING_OBJECT (avimux, "input mpeg audio is not parsed");
723 GST_WARNING_OBJECT (avimux, "falling back to CBR muxing");
724 avipad->hdr.scale = 1;
725 /* no need to check further */
732 gst_avi_mux_audsink_set_fields (GstAviMux * avimux, GstAviAudioPad * avipad)
734 if (avipad->parent.hdr.scale > 1) {
735 /* vbr case: fixed duration per frame/chunk */
736 avipad->parent.hdr.rate = avipad->auds.rate;
737 avipad->parent.hdr.samplesize = 0;
738 /* FIXME ?? some rumours say this should be largest audio chunk size */
739 avipad->auds.blockalign = avipad->parent.hdr.scale;
741 /* by spec, hdr.rate is av_bps related, is calculated that way in stop_file,
742 * and reduces to sample rate in PCM like cases */
743 avipad->parent.hdr.rate = avipad->auds.av_bps / avipad->auds.blockalign;
744 avipad->parent.hdr.samplesize = avipad->auds.blockalign;
745 avipad->parent.hdr.scale = 1;
750 gst_avi_mux_audsink_set_caps (GstPad * pad, GstCaps * vscaps)
753 GstAviAudioPad *avipad;
754 GstAviCollectData *collect_pad;
755 GstStructure *structure;
756 const gchar *mimetype;
757 const GValue *codec_data;
760 avimux = GST_AVI_MUX (gst_pad_get_parent (pad));
762 /* find stream data */
763 collect_pad = (GstAviCollectData *) gst_pad_get_element_private (pad);
764 g_assert (collect_pad);
765 avipad = (GstAviAudioPad *) collect_pad->avipad;
767 g_assert (!avipad->parent.is_video);
768 g_assert (avipad->parent.hdr.type == GST_MAKE_FOURCC ('a', 'u', 'd', 's'));
770 GST_DEBUG_OBJECT (avimux, "%s:%s, caps=%" GST_PTR_FORMAT,
771 GST_DEBUG_PAD_NAME (pad), vscaps);
773 structure = gst_caps_get_structure (vscaps, 0);
774 mimetype = gst_structure_get_name (structure);
776 /* we want these for all */
777 if (!gst_structure_get_int (structure, "channels", &channels) ||
778 !gst_structure_get_int (structure, "rate", &rate)) {
782 avipad->auds.channels = channels;
783 avipad->auds.rate = rate;
785 /* codec initialization data, if any */
786 codec_data = gst_structure_get_value (structure, "codec_data");
788 avipad->auds_codec_data = gst_value_get_buffer (codec_data);
789 gst_buffer_ref (avipad->auds_codec_data);
790 /* keep global track of size */
791 avimux->codec_data_size += GST_BUFFER_SIZE (avipad->auds_codec_data);
794 if (!strcmp (mimetype, "audio/x-raw-int")) {
798 avipad->auds.format = GST_RIFF_WAVE_FORMAT_PCM;
800 if (!gst_structure_get_int (structure, "width", &width) ||
801 !gst_structure_get_int (structure, "depth", &depth) ||
802 !gst_structure_get_boolean (structure, "signed", &signedness)) {
803 GST_DEBUG_OBJECT (avimux,
804 "broken caps, width/depth/signed field missing");
808 /* no clear place to put different values for these while keeping to spec */
809 if (width != depth) {
810 GST_DEBUG_OBJECT (avimux, "width must be same as depth!");
814 /* because that's the way the caps will be recreated from riff data */
815 if ((width == 8 && signedness) || (width == 16 && !signedness)) {
816 GST_DEBUG_OBJECT (avimux,
817 "8-bit PCM must be unsigned, 16-bit PCM signed");
821 avipad->auds.blockalign = width;
822 avipad->auds.size = (width == 8) ? 8 : depth;
824 /* set some more info straight */
825 avipad->auds.blockalign /= 8;
826 avipad->auds.blockalign *= avipad->auds.channels;
827 avipad->auds.av_bps = avipad->auds.blockalign * avipad->auds.rate;
829 avipad->auds.format = 0;
830 /* set some defaults */
831 avipad->auds.blockalign = 1;
832 avipad->auds.av_bps = 0;
833 avipad->auds.size = 16;
835 if (!strcmp (mimetype, "audio/mpeg")) {
838 gst_structure_get_int (structure, "mpegversion", &mpegversion);
839 switch (mpegversion) {
842 gboolean parsed = FALSE;
844 gst_structure_get_int (structure, "layer", &layer);
845 gst_structure_get_boolean (structure, "parsed", &parsed);
848 avipad->auds.format = GST_RIFF_WAVE_FORMAT_MPEGL3;
852 avipad->auds.format = GST_RIFF_WAVE_FORMAT_MPEGL12;
856 /* treat as VBR, should also cover CBR case;
857 * setup hook to parse frame header and determine spf */
858 avipad->parent.hook = gst_avi_mux_audsink_scan_mpeg_audio;
860 GST_WARNING_OBJECT (avimux, "unparsed MPEG audio input (?), "
867 GstBuffer *codec_data_buf = avipad->auds_codec_data;
868 const gchar *stream_format;
871 stream_format = gst_structure_get_string (structure, "stream-format");
873 if (strcmp (stream_format, "raw") != 0) {
874 GST_WARNING_OBJECT (avimux, "AAC's stream format '%s' is not "
875 "supported, please use 'raw'", stream_format);
879 GST_WARNING_OBJECT (avimux, "AAC's stream-format not specified, "
883 /* vbr case needs some special handling */
884 if (!codec_data_buf || GST_BUFFER_SIZE (codec_data_buf) < 2) {
885 GST_WARNING_OBJECT (avimux, "no (valid) codec_data for AAC audio");
888 avipad->auds.format = GST_RIFF_WAVE_FORMAT_AAC;
889 /* need to determine frame length */
890 codec = GST_READ_UINT16_BE (GST_BUFFER_DATA (codec_data_buf));
891 avipad->parent.hdr.scale = (codec & 0x4) ? 960 : 1024;
895 } else if (!strcmp (mimetype, "audio/x-vorbis")) {
896 avipad->auds.format = GST_RIFF_WAVE_FORMAT_VORBIS3;
897 } else if (!strcmp (mimetype, "audio/x-ac3")) {
898 avipad->auds.format = GST_RIFF_WAVE_FORMAT_A52;
899 } else if (!strcmp (mimetype, "audio/x-alaw")) {
900 avipad->auds.format = GST_RIFF_WAVE_FORMAT_ALAW;
901 avipad->auds.size = 8;
902 avipad->auds.blockalign = avipad->auds.channels;
903 avipad->auds.av_bps = avipad->auds.blockalign * avipad->auds.rate;
904 } else if (!strcmp (mimetype, "audio/x-mulaw")) {
905 avipad->auds.format = GST_RIFF_WAVE_FORMAT_MULAW;
906 avipad->auds.size = 8;
907 avipad->auds.blockalign = avipad->auds.channels;
908 avipad->auds.av_bps = avipad->auds.blockalign * avipad->auds.rate;
909 } else if (!strcmp (mimetype, "audio/x-wma")) {
914 if (gst_structure_get_int (structure, "wmaversion", &version)) {
917 avipad->auds.format = GST_RIFF_WAVE_FORMAT_WMAV1;
920 avipad->auds.format = GST_RIFF_WAVE_FORMAT_WMAV2;
927 if (avipad->auds.format != 0) {
928 if (gst_structure_get_int (structure, "block_align", &block_align)) {
929 avipad->auds.blockalign = block_align;
931 if (gst_structure_get_int (structure, "bitrate", &bitrate)) {
932 avipad->auds.av_bps = bitrate / 8;
938 if (!avipad->auds.format)
941 avipad->parent.hdr.fcc_handler = avipad->auds.format;
942 gst_avi_mux_audsink_set_fields (avimux, avipad);
944 gst_object_unref (avimux);
949 GST_WARNING_OBJECT (avimux, "refused caps %" GST_PTR_FORMAT, vscaps);
950 gst_object_unref (avimux);
957 gst_avi_mux_request_new_pad (GstElement * element,
958 GstPadTemplate * templ, const gchar * req_name)
963 GstElementClass *klass;
965 const gchar *pad_name = NULL;
966 GstPadSetCapsFunction setcapsfunc = NULL;
969 g_return_val_if_fail (templ != NULL, NULL);
971 if (templ->direction != GST_PAD_SINK)
972 goto wrong_direction;
974 g_return_val_if_fail (GST_IS_AVI_MUX (element), NULL);
975 avimux = GST_AVI_MUX (element);
977 if (!avimux->write_header)
980 klass = GST_ELEMENT_GET_CLASS (element);
982 /* FIXME-0.11: use %d instead of %02d for pad_names */
984 if (templ == gst_element_class_get_pad_template (klass, "audio_%d")) {
985 /* don't mix named and unnamed pads, if the pad already exists we fail when
986 * trying to add it */
987 if (req_name != NULL && sscanf (req_name, "audio_%02d", &pad_id) == 1) {
990 name = g_strdup_printf ("audio_%02d", avimux->audio_pads++);
993 setcapsfunc = GST_DEBUG_FUNCPTR (gst_avi_mux_audsink_set_caps);
995 /* init pad specific data */
996 avipad = g_malloc0 (sizeof (GstAviAudioPad));
997 avipad->is_video = FALSE;
998 avipad->hdr.type = GST_MAKE_FOURCC ('a', 'u', 'd', 's');
999 /* audio goes last */
1000 avimux->sinkpads = g_slist_append (avimux->sinkpads, avipad);
1001 } else if (templ == gst_element_class_get_pad_template (klass, "video_%d")) {
1002 /* though streams are pretty generic and relatively self-contained,
1003 * some video info goes in a single avi header -and therefore mux struct-
1004 * so video restricted to one stream */
1005 if (avimux->video_pads > 0)
1006 goto too_many_video_pads;
1009 pad_name = "video_00";
1010 avimux->video_pads++;
1011 setcapsfunc = GST_DEBUG_FUNCPTR (gst_avi_mux_vidsink_set_caps);
1013 /* init pad specific data */
1014 avipad = g_malloc0 (sizeof (GstAviVideoPad));
1015 avipad->is_video = TRUE;
1016 avipad->hdr.type = GST_MAKE_FOURCC ('v', 'i', 'd', 's');
1017 /* video goes first */
1018 avimux->sinkpads = g_slist_prepend (avimux->sinkpads, avipad);
1020 goto wrong_template;
1022 newpad = gst_pad_new_from_template (templ, pad_name);
1023 gst_pad_set_setcaps_function (newpad, setcapsfunc);
1027 avipad->collect = gst_collect_pads_add_pad (avimux->collect,
1028 newpad, sizeof (GstAviCollectData));
1029 ((GstAviCollectData *) (avipad->collect))->avipad = avipad;
1030 /* FIXME: hacked way to override/extend the event function of
1031 * GstCollectPads; because it sets its own event function giving the
1032 * element no access to events */
1033 avimux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (newpad);
1034 gst_pad_set_event_function (newpad,
1035 GST_DEBUG_FUNCPTR (gst_avi_mux_handle_event));
1037 if (!gst_element_add_pad (element, newpad))
1038 goto pad_add_failed;
1040 GST_DEBUG_OBJECT (newpad, "Added new request pad");
1047 g_warning ("avimux: request pad that is not a SINK pad\n");
1052 g_warning ("avimux: request pad cannot be added after streaming started\n");
1057 g_warning ("avimux: this is not our template!\n");
1060 too_many_video_pads:
1062 GST_WARNING_OBJECT (avimux, "Can only have one video stream");
1067 GST_WARNING_OBJECT (avimux, "Adding the new pad '%s' failed", pad_name);
1068 gst_object_unref (newpad);
1074 gst_avi_mux_release_pad (GstElement * element, GstPad * pad)
1076 GstAviMux *avimux = GST_AVI_MUX (element);
1079 node = avimux->sinkpads;
1081 GstAviPad *avipad = (GstAviPad *) node->data;
1083 if (avipad->collect->pad == pad) {
1084 /* pad count should not be adjusted,
1085 * as it also represent number of streams present */
1086 avipad->collect = NULL;
1087 GST_DEBUG_OBJECT (avimux, "removed pad '%s'", GST_PAD_NAME (pad));
1088 gst_collect_pads_remove_pad (avimux->collect, pad);
1089 gst_element_remove_pad (element, pad);
1090 /* if not started yet, we can remove any sign this pad ever existed */
1091 /* in this case _start will take care of the real pad count */
1092 if (avimux->write_header) {
1093 avimux->sinkpads = g_slist_remove (avimux->sinkpads, avipad);
1094 gst_avi_mux_pad_reset (avipad, TRUE);
1103 g_warning ("Unknown pad %s", GST_PAD_NAME (pad));
1107 gst_avi_mux_start_chunk (GstByteWriter * bw, const gchar * tag, guint32 fourcc)
1112 gst_byte_writer_put_data (bw, (const guint8 *) tag, 4);
1114 gst_byte_writer_put_uint32_le (bw, fourcc);
1116 chunk_offset = gst_byte_writer_get_pos (bw);
1117 /* real chunk size comes later */
1118 gst_byte_writer_put_uint32_le (bw, 0);
1120 return chunk_offset;
1124 gst_avi_mux_end_chunk (GstByteWriter * bw, guint chunk_offset)
1128 size = gst_byte_writer_get_pos (bw);
1130 gst_byte_writer_set_pos (bw, chunk_offset);
1131 gst_byte_writer_put_uint32_le (bw, size - chunk_offset - 4);
1132 gst_byte_writer_set_pos (bw, size);
1134 /* arrange for even padding */
1136 gst_byte_writer_put_uint8 (bw, 0);
1139 /* maybe some of these functions should be moved to riff.h? */
1142 gst_avi_mux_write_tag (const GstTagList * list, const gchar * tag,
1151 GST_RIFF_INFO_IARL, GST_TAG_LOCATION}, {
1152 GST_RIFF_INFO_IART, GST_TAG_ARTIST}, {
1153 GST_RIFF_INFO_ICMT, GST_TAG_COMMENT}, {
1154 GST_RIFF_INFO_ICOP, GST_TAG_COPYRIGHT}, {
1155 GST_RIFF_INFO_ICRD, GST_TAG_DATE}, {
1156 GST_RIFF_INFO_IGNR, GST_TAG_GENRE}, {
1157 GST_RIFF_INFO_IKEY, GST_TAG_KEYWORDS}, {
1158 GST_RIFF_INFO_INAM, GST_TAG_TITLE}, {
1159 GST_RIFF_INFO_ISFT, GST_TAG_ENCODER}, {
1160 GST_RIFF_INFO_ISRC, GST_TAG_ISRC}, {
1165 GstByteWriter *bw = data;
1168 for (n = 0; rifftags[n].fcc != 0; n++) {
1169 if (!strcmp (rifftags[n].tag, tag) &&
1170 gst_tag_list_get_string (list, tag, &str) && str) {
1171 chunk = gst_avi_mux_start_chunk (bw, NULL, rifftags[n].fcc);
1172 gst_byte_writer_put_string (bw, str);
1173 gst_avi_mux_end_chunk (bw, chunk);
1181 gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
1183 const GstTagList *tags;
1188 guint avih, riff, hdrl;
1190 GST_DEBUG_OBJECT (avimux, "creating avi header, data_size %u, idx_size %u",
1191 avimux->data_size, avimux->idx_size);
1193 if (avimux->tags_snap)
1194 tags = avimux->tags_snap;
1196 /* need to make snapshot of current state of tags to ensure the same set
1197 * is used next time around during header rewrite at the end */
1198 tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (avimux));
1200 tags = avimux->tags_snap = gst_tag_list_copy (tags);
1203 gst_byte_writer_init_with_size (&bw, 1024, FALSE);
1205 /* avi header metadata */
1206 riff = gst_avi_mux_start_chunk (&bw, "RIFF", 0);
1207 gst_byte_writer_put_data (&bw, (guint8 *) "AVI ", 4);
1208 hdrl = gst_avi_mux_start_chunk (&bw, "LIST", 0);
1209 gst_byte_writer_put_data (&bw, (guint8 *) "hdrl", 4);
1211 avih = gst_avi_mux_start_chunk (&bw, "avih", 0);
1212 /* the AVI header itself */
1213 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.us_frame);
1214 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.max_bps);
1215 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.pad_gran);
1216 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.flags);
1217 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.tot_frames);
1218 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.init_frames);
1219 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.streams);
1220 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.bufsize);
1221 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.width);
1222 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.height);
1223 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.scale);
1224 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.rate);
1225 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.start);
1226 gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.length);
1227 gst_avi_mux_end_chunk (&bw, avih);
1230 node = avimux->sinkpads;
1232 GstAviPad *avipad = (GstAviPad *) node->data;
1233 GstAviVideoPad *vidpad = (GstAviVideoPad *) avipad;
1234 GstAviAudioPad *audpad = (GstAviAudioPad *) avipad;
1235 gint codec_size = 0;
1236 guint strh, strl, strf, indx;
1238 /* stream list metadata */
1239 strl = gst_avi_mux_start_chunk (&bw, "LIST", 0);
1240 gst_byte_writer_put_data (&bw, (guint8 *) "strl", 4);
1242 /* generic header */
1243 strh = gst_avi_mux_start_chunk (&bw, "strh", 0);
1244 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.type);
1245 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.fcc_handler);
1246 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.flags);
1247 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.priority);
1248 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.init_frames);
1249 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.scale);
1250 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.rate);
1251 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.start);
1252 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.length);
1253 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.bufsize);
1254 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.quality);
1255 gst_byte_writer_put_uint32_le (&bw, avipad->hdr.samplesize);
1256 gst_byte_writer_put_uint16_le (&bw, 0);
1257 gst_byte_writer_put_uint16_le (&bw, 0);
1258 gst_byte_writer_put_uint16_le (&bw, 0);
1259 gst_byte_writer_put_uint16_le (&bw, 0);
1260 gst_avi_mux_end_chunk (&bw, strh);
1262 if (avipad->is_video) {
1263 codec_size = vidpad->vids_codec_data ?
1264 GST_BUFFER_SIZE (vidpad->vids_codec_data) : 0;
1265 /* the video header */
1266 strf = gst_avi_mux_start_chunk (&bw, "strf", 0);
1267 /* the actual header */
1268 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.size + codec_size);
1269 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.width);
1270 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.height);
1271 gst_byte_writer_put_uint16_le (&bw, vidpad->vids.planes);
1272 gst_byte_writer_put_uint16_le (&bw, vidpad->vids.bit_cnt);
1273 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.compression);
1274 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.image_size);
1275 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.xpels_meter);
1276 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.ypels_meter);
1277 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.num_colors);
1278 gst_byte_writer_put_uint32_le (&bw, vidpad->vids.imp_colors);
1279 if (vidpad->vids_codec_data) {
1280 gst_byte_writer_put_data (&bw,
1281 GST_BUFFER_DATA (vidpad->vids_codec_data),
1282 GST_BUFFER_SIZE (vidpad->vids_codec_data));
1284 gst_avi_mux_end_chunk (&bw, strf);
1286 /* add video property data, mainly for aspect ratio, if any */
1287 if (vidpad->vprp.aspect) {
1291 /* let's be on the safe side */
1292 vidpad->vprp.fields = MIN (vidpad->vprp.fields,
1293 GST_RIFF_VPRP_VIDEO_FIELDS);
1294 /* the vprp header */
1295 vprp = gst_avi_mux_start_chunk (&bw, "vprp", 0);
1296 /* the actual data */
1297 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.format_token);
1298 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.standard);
1299 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_rate);
1300 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.hor_t_total);
1301 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_lines);
1302 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.aspect);
1303 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.width);
1304 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.height);
1305 gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.fields);
1307 for (f = 0; f < vidpad->vprp.fields; ++f) {
1308 gst_riff_vprp_video_field_desc *fd;
1310 fd = &(vidpad->vprp.field_info[f]);
1311 gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_height);
1312 gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_width);
1313 gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_height);
1314 gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_width);
1315 gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_x_offset);
1316 gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_y_offset);
1317 gst_byte_writer_put_uint32_le (&bw, fd->video_x_t_offset);
1318 gst_byte_writer_put_uint32_le (&bw, fd->video_y_start);
1320 gst_avi_mux_end_chunk (&bw, vprp);
1323 codec_size = audpad->auds_codec_data ?
1324 GST_BUFFER_SIZE (audpad->auds_codec_data) : 0;
1325 /* the audio header */
1326 strf = gst_avi_mux_start_chunk (&bw, "strf", 0);
1327 /* the actual header */
1328 gst_byte_writer_put_uint16_le (&bw, audpad->auds.format);
1329 gst_byte_writer_put_uint16_le (&bw, audpad->auds.channels);
1330 gst_byte_writer_put_uint32_le (&bw, audpad->auds.rate);
1331 gst_byte_writer_put_uint32_le (&bw, audpad->auds.av_bps);
1332 gst_byte_writer_put_uint16_le (&bw, audpad->auds.blockalign);
1333 gst_byte_writer_put_uint16_le (&bw, audpad->auds.size);
1334 gst_byte_writer_put_uint16_le (&bw, codec_size);
1335 if (audpad->auds_codec_data) {
1336 gst_byte_writer_put_data (&bw,
1337 GST_BUFFER_DATA (audpad->auds_codec_data),
1338 GST_BUFFER_SIZE (audpad->auds_codec_data));
1340 gst_avi_mux_end_chunk (&bw, strf);
1343 /* odml superindex chunk */
1344 if (avipad->idx_index > 0)
1345 indx = gst_avi_mux_start_chunk (&bw, "indx", 0);
1347 indx = gst_avi_mux_start_chunk (&bw, "JUNK", 0);
1348 gst_byte_writer_put_uint16_le (&bw, 4); /* bytes per entry */
1349 gst_byte_writer_put_uint8 (&bw, 0); /* index subtype */
1350 gst_byte_writer_put_uint8 (&bw, GST_AVI_INDEX_OF_INDEXES); /* index type */
1351 gst_byte_writer_put_uint32_le (&bw, avipad->idx_index); /* entries in use */
1352 gst_byte_writer_put_data (&bw, (guint8 *) avipad->tag, 4); /* stream id */
1353 gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
1354 gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
1355 gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
1356 gst_byte_writer_put_data (&bw, (guint8 *) avipad->idx,
1357 GST_AVI_SUPERINDEX_COUNT * sizeof (gst_avi_superindex_entry));
1358 gst_avi_mux_end_chunk (&bw, indx);
1360 /* end strl for this stream */
1361 gst_avi_mux_end_chunk (&bw, strl);
1366 if (avimux->video_pads > 0) {
1369 odml = gst_avi_mux_start_chunk (&bw, "LIST", 0);
1370 gst_byte_writer_put_data (&bw, (guint8 *) "odml", 4);
1371 dmlh = gst_avi_mux_start_chunk (&bw, "dmlh", 0);
1372 gst_byte_writer_put_uint32_le (&bw, avimux->total_frames);
1373 gst_avi_mux_end_chunk (&bw, dmlh);
1374 gst_avi_mux_end_chunk (&bw, odml);
1378 gst_avi_mux_end_chunk (&bw, hdrl);
1384 info = gst_avi_mux_start_chunk (&bw, "LIST", 0);
1385 gst_byte_writer_put_data (&bw, (guint8 *) "INFO", 4);
1387 gst_tag_list_foreach (tags, gst_avi_mux_write_tag, &bw);
1388 if (info + 8 == gst_byte_writer_get_pos (&bw)) {
1389 /* no tags writen, remove the empty INFO LIST as it is useless
1390 * and prevents playback in vlc */
1391 gst_byte_writer_set_pos (&bw, info - 4);
1393 gst_avi_mux_end_chunk (&bw, info);
1398 gst_avi_mux_end_chunk (&bw, riff);
1400 /* avi data header */
1401 gst_byte_writer_put_data (&bw, (guint8 *) "LIST", 4);
1402 gst_byte_writer_put_uint32_le (&bw, avimux->data_size);
1403 gst_byte_writer_put_data (&bw, (guint8 *) "movi", 4);
1405 /* now get the data */
1406 buffer = gst_byte_writer_reset_and_get_buffer (&bw);
1408 /* ... but RIFF includes more than just header */
1409 size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buffer) + 4);
1410 size += 8 + avimux->data_size + avimux->idx_size;
1411 GST_WRITE_UINT32_LE (GST_BUFFER_DATA (buffer) + 4, size);
1413 GST_MEMDUMP_OBJECT (avimux, "avi header", GST_BUFFER_DATA (buffer),
1414 GST_BUFFER_SIZE (buffer));
1420 gst_avi_mux_riff_get_avix_header (guint32 datax_size)
1425 buffer = gst_buffer_new_and_alloc (24);
1426 buffdata = GST_BUFFER_DATA (buffer);
1428 memcpy (buffdata + 0, "RIFF", 4);
1429 GST_WRITE_UINT32_LE (buffdata + 4, datax_size + 3 * 4);
1430 memcpy (buffdata + 8, "AVIX", 4);
1431 memcpy (buffdata + 12, "LIST", 4);
1432 GST_WRITE_UINT32_LE (buffdata + 16, datax_size);
1433 memcpy (buffdata + 20, "movi", 4);
1438 static inline GstBuffer *
1439 gst_avi_mux_riff_get_header (GstAviPad * avipad, guint32 video_frame_size)
1444 buffer = gst_buffer_new_and_alloc (8);
1445 buffdata = GST_BUFFER_DATA (buffer);
1446 memcpy (buffdata + 0, avipad->tag, 4);
1447 GST_WRITE_UINT32_LE (buffdata + 4, video_frame_size);
1452 /* write an odml index chunk in the movi list */
1453 static GstFlowReturn
1454 gst_avi_mux_write_avix_index (GstAviMux * avimux, GstAviPad * avipad,
1455 gchar * code, gchar * chunk, gst_avi_superindex_entry * super_index,
1456 gint * super_index_count)
1460 guint8 *buffdata, *data;
1461 gst_riff_index_entry *entry;
1463 guint32 size, entry_count;
1464 gboolean is_pcm = FALSE;
1465 guint32 pcm_samples = 0;
1467 /* check if it is pcm */
1468 if (avipad && !avipad->is_video) {
1469 GstAviAudioPad *audiopad = (GstAviAudioPad *) avipad;
1470 if (audiopad->auds.format == GST_RIFF_WAVE_FORMAT_PCM) {
1471 pcm_samples = audiopad->samples;
1476 /* allocate the maximum possible */
1477 buffer = gst_buffer_new_and_alloc (32 + 8 * avimux->idx_index);
1478 buffdata = GST_BUFFER_DATA (buffer);
1480 /* general index chunk info */
1481 memcpy (buffdata + 0, chunk, 4); /* chunk id */
1482 GST_WRITE_UINT32_LE (buffdata + 4, 0); /* chunk size; fill later */
1483 GST_WRITE_UINT16_LE (buffdata + 8, 2); /* index entry is 2 words */
1484 buffdata[10] = 0; /* index subtype */
1485 buffdata[11] = GST_AVI_INDEX_OF_CHUNKS; /* index type: AVI_INDEX_OF_CHUNKS */
1486 GST_WRITE_UINT32_LE (buffdata + 12, 0); /* entries in use; fill later */
1487 memcpy (buffdata + 16, code, 4); /* stream to which index refers */
1488 GST_WRITE_UINT64_LE (buffdata + 20, avimux->avix_start); /* base offset */
1489 GST_WRITE_UINT32_LE (buffdata + 28, 0); /* reserved */
1492 /* now the actual index entries */
1493 i = avimux->idx_index;
1494 entry = avimux->idx;
1496 if (memcmp (&entry->id, code, 4) == 0) {
1497 /* enter relative offset to the data (!) */
1498 GST_WRITE_UINT32_LE (buffdata, GUINT32_FROM_LE (entry->offset) + 8);
1499 /* msb is set if not (!) keyframe */
1500 GST_WRITE_UINT32_LE (buffdata + 4, GUINT32_FROM_LE (entry->size)
1501 | (GUINT32_FROM_LE (entry->flags)
1502 & GST_RIFF_IF_KEYFRAME ? 0 : 1U << 31));
1509 /* ok, now we know the size and no of entries, fill in where needed */
1510 data = GST_BUFFER_DATA (buffer);
1511 GST_BUFFER_SIZE (buffer) = size = buffdata - data;
1512 GST_WRITE_UINT32_LE (data + 4, size - 8);
1513 entry_count = (size - 32) / 8;
1514 GST_WRITE_UINT32_LE (data + 12, entry_count);
1516 /* decorate and send */
1517 gst_buffer_set_caps (buffer, GST_PAD_CAPS (avimux->srcpad));
1518 if ((res = gst_pad_push (avimux->srcpad, buffer)) != GST_FLOW_OK)
1521 /* keep track of this in superindex (if room) ... */
1522 if (*super_index_count < GST_AVI_SUPERINDEX_COUNT) {
1523 i = *super_index_count;
1524 super_index[i].offset = GUINT64_TO_LE (avimux->total_data);
1525 super_index[i].size = GUINT32_TO_LE (size);
1527 super_index[i].duration = GUINT32_TO_LE (pcm_samples);
1529 super_index[i].duration = GUINT32_TO_LE (entry_count);
1531 (*super_index_count)++;
1533 GST_WARNING_OBJECT (avimux, "No more room in superindex of stream %s",
1536 /* ... and in size */
1537 avimux->total_data += size;
1538 if (avimux->is_bigfile)
1539 avimux->datax_size += size;
1541 avimux->data_size += size;
1546 /* some other usable functions (thankyou xawtv ;-) ) */
1549 gst_avi_mux_add_index (GstAviMux * avimux, GstAviPad * avipad, guint32 flags,
1552 gchar *code = avipad->tag;
1553 if (avimux->idx_index == avimux->idx_count) {
1554 avimux->idx_count += 256;
1556 g_realloc (avimux->idx,
1557 avimux->idx_count * sizeof (gst_riff_index_entry));
1560 /* in case of pcm audio, we need to count the number of samples for
1561 * putting in the indx entries */
1562 if (!avipad->is_video) {
1563 GstAviAudioPad *audiopad = (GstAviAudioPad *) avipad;
1564 if (audiopad->auds.format == GST_RIFF_WAVE_FORMAT_PCM) {
1565 audiopad->samples += size / audiopad->auds.blockalign;
1569 memcpy (&(avimux->idx[avimux->idx_index].id), code, 4);
1570 avimux->idx[avimux->idx_index].flags = GUINT32_TO_LE (flags);
1571 avimux->idx[avimux->idx_index].offset = GUINT32_TO_LE (avimux->idx_offset);
1572 avimux->idx[avimux->idx_index].size = GUINT32_TO_LE (size);
1573 avimux->idx_index++;
1576 static GstFlowReturn
1577 gst_avi_mux_write_index (GstAviMux * avimux)
1583 buffer = gst_buffer_new_and_alloc (8);
1584 buffdata = GST_BUFFER_DATA (buffer);
1585 memcpy (buffdata + 0, "idx1", 4);
1586 GST_WRITE_UINT32_LE (buffdata + 4,
1587 avimux->idx_index * sizeof (gst_riff_index_entry));
1589 gst_buffer_set_caps (buffer, GST_PAD_CAPS (avimux->srcpad));
1590 res = gst_pad_push (avimux->srcpad, buffer);
1591 if (res != GST_FLOW_OK)
1594 buffer = gst_buffer_new ();
1595 GST_BUFFER_SIZE (buffer) = avimux->idx_index * sizeof (gst_riff_index_entry);
1596 GST_BUFFER_DATA (buffer) = (guint8 *) avimux->idx;
1597 GST_BUFFER_MALLOCDATA (buffer) = GST_BUFFER_DATA (buffer);
1598 avimux->idx = NULL; /* will be free()'ed by gst_buffer_unref() */
1599 avimux->total_data += GST_BUFFER_SIZE (buffer) + 8;
1601 gst_buffer_set_caps (buffer, GST_PAD_CAPS (avimux->srcpad));
1602 res = gst_pad_push (avimux->srcpad, buffer);
1603 if (res != GST_FLOW_OK)
1606 avimux->idx_size += avimux->idx_index * sizeof (gst_riff_index_entry) + 8;
1609 avimux->avi_hdr.flags |= GST_RIFF_AVIH_HASINDEX;
1613 static GstFlowReturn
1614 gst_avi_mux_bigfile (GstAviMux * avimux, gboolean last)
1616 GstFlowReturn res = GST_FLOW_OK;
1621 /* first some odml standard index chunks in the movi list */
1622 node = avimux->sinkpads;
1624 GstAviPad *avipad = (GstAviPad *) node->data;
1628 res = gst_avi_mux_write_avix_index (avimux, avipad, avipad->tag,
1629 avipad->idx_tag, avipad->idx, &avipad->idx_index);
1630 if (res != GST_FLOW_OK)
1634 if (avimux->is_bigfile) {
1636 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
1637 avimux->avix_start, GST_CLOCK_TIME_NONE, avimux->avix_start);
1638 /* if the event succeeds */
1639 gst_pad_push_event (avimux->srcpad, event);
1641 /* rewrite AVIX header */
1642 header = gst_avi_mux_riff_get_avix_header (avimux->datax_size);
1643 gst_buffer_set_caps (header, GST_PAD_CAPS (avimux->srcpad));
1644 res = gst_pad_push (avimux->srcpad, header);
1646 /* go back to current location, at least try */
1647 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
1648 avimux->total_data, GST_CLOCK_TIME_NONE, avimux->total_data);
1649 gst_pad_push_event (avimux->srcpad, event);
1651 if (res != GST_FLOW_OK)
1653 } else { /* write a standard index in the first riff chunk */
1654 res = gst_avi_mux_write_index (avimux);
1655 /* the index data/buffer is freed by pushing it */
1656 avimux->idx_count = 0;
1657 if (res != GST_FLOW_OK)
1661 avimux->avix_start = avimux->total_data;
1666 avimux->is_bigfile = TRUE;
1667 avimux->numx_frames = 0;
1668 avimux->datax_size = 4; /* movi tag */
1669 avimux->idx_index = 0;
1670 node = avimux->sinkpads;
1672 GstAviPad *avipad = (GstAviPad *) node->data;
1674 if (!avipad->is_video) {
1675 GstAviAudioPad *audiopad = (GstAviAudioPad *) avipad;
1676 audiopad->samples = 0;
1680 header = gst_avi_mux_riff_get_avix_header (0);
1681 avimux->total_data += GST_BUFFER_SIZE (header);
1682 /* avix_start is used as base offset for the odml index chunk */
1683 avimux->idx_offset = avimux->total_data - avimux->avix_start;
1684 gst_buffer_set_caps (header, GST_PAD_CAPS (avimux->srcpad));
1685 return gst_pad_push (avimux->srcpad, header);
1688 /* enough header blabla now, let's go on to actually writing the headers */
1690 static GstFlowReturn
1691 gst_avi_mux_start_file (GstAviMux * avimux)
1698 avimux->total_data = 0;
1699 avimux->total_frames = 0;
1700 avimux->data_size = 4; /* movi tag */
1701 avimux->datax_size = 0;
1702 avimux->num_frames = 0;
1703 avimux->numx_frames = 0;
1704 avimux->avix_start = 0;
1706 avimux->idx_index = 0;
1707 avimux->idx_offset = 0; /* see 10 lines below */
1708 avimux->idx_size = 0;
1709 avimux->idx_count = 0;
1713 avimux->write_header = FALSE;
1714 avimux->restart = FALSE;
1716 /* init streams, see what we've got */
1717 node = avimux->sinkpads;
1718 avimux->audio_pads = avimux->video_pads = 0;
1720 GstAviPad *avipad = (GstAviPad *) node->data;
1724 if (!avipad->is_video) {
1725 /* audio stream numbers must start at 1 iff there is a video stream 0;
1726 * request_pad inserts video pad at head of list, so this test suffices */
1727 if (avimux->video_pads)
1728 avimux->audio_pads++;
1729 avipad->tag = g_strdup_printf ("%02uwb", avimux->audio_pads);
1730 avipad->idx_tag = g_strdup_printf ("ix%02u", avimux->audio_pads);
1731 if (!avimux->video_pads)
1732 avimux->audio_pads++;
1734 avipad->tag = g_strdup_printf ("%02udb", avimux->video_pads);
1735 avipad->idx_tag = g_strdup_printf ("ix%02u", avimux->video_pads++);
1739 caps = gst_caps_copy (gst_pad_get_pad_template_caps (avimux->srcpad));
1740 gst_pad_set_caps (avimux->srcpad, caps);
1741 gst_caps_unref (caps);
1743 /* let downstream know we think in BYTES and expect to do seeking later on */
1744 gst_pad_push_event (avimux->srcpad,
1745 gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0));
1748 avimux->avi_hdr.streams = g_slist_length (avimux->sinkpads);
1749 avimux->is_bigfile = FALSE;
1751 header = gst_avi_mux_riff_get_avi_header (avimux);
1752 avimux->total_data += GST_BUFFER_SIZE (header);
1754 gst_buffer_set_caps (header, GST_PAD_CAPS (avimux->srcpad));
1755 res = gst_pad_push (avimux->srcpad, header);
1757 avimux->idx_offset = avimux->total_data;
1762 static GstFlowReturn
1763 gst_avi_mux_stop_file (GstAviMux * avimux)
1765 GstFlowReturn res = GST_FLOW_OK;
1770 /* if bigfile, rewrite header, else write indexes */
1771 /* don't bail out at once if error, still try to re-write header */
1772 if (avimux->video_pads > 0) {
1773 if (avimux->is_bigfile) {
1774 res = gst_avi_mux_bigfile (avimux, TRUE);
1776 res = gst_avi_mux_write_index (avimux);
1780 /* we do our best to make it interleaved at least ... */
1781 if (avimux->audio_pads > 0 && avimux->video_pads > 0)
1782 avimux->avi_hdr.flags |= GST_RIFF_AVIH_ISINTERLEAVED;
1784 /* set rate and everything having to do with that */
1785 avimux->avi_hdr.max_bps = 0;
1786 node = avimux->sinkpads;
1788 GstAviPad *avipad = (GstAviPad *) node->data;
1792 if (!avipad->is_video) {
1793 GstAviAudioPad *audpad = (GstAviAudioPad *) avipad;
1795 /* calculate bps if needed */
1796 if (!audpad->auds.av_bps) {
1797 if (audpad->audio_time) {
1798 audpad->auds.av_bps =
1799 (GST_SECOND * audpad->audio_size) / audpad->audio_time;
1800 /* round bps to nearest multiple of 8;
1801 * which is much more likely to be the (cbr) bitrate in use;
1802 * which in turn results in better timestamp calculation on playback */
1803 audpad->auds.av_bps = GST_ROUND_UP_8 (audpad->auds.av_bps - 4);
1805 GST_ELEMENT_WARNING (avimux, STREAM, MUX,
1806 (_("No or invalid input audio, AVI stream will be corrupt.")),
1808 audpad->auds.av_bps = 0;
1811 gst_avi_mux_audsink_set_fields (avimux, audpad);
1812 avimux->avi_hdr.max_bps += audpad->auds.av_bps;
1813 avipad->hdr.length = gst_util_uint64_scale (audpad->audio_time,
1814 avipad->hdr.rate, avipad->hdr.scale * GST_SECOND);
1816 GstAviVideoPad *vidpad = (GstAviVideoPad *) avipad;
1818 avimux->avi_hdr.max_bps += ((vidpad->vids.bit_cnt + 7) / 8) *
1819 (1000000. / avimux->avi_hdr.us_frame) * vidpad->vids.image_size;
1820 avipad->hdr.length = avimux->total_frames;
1824 /* statistics/total_frames/... */
1825 avimux->avi_hdr.tot_frames = avimux->num_frames;
1827 /* seek and rewrite the header */
1828 header = gst_avi_mux_riff_get_avi_header (avimux);
1829 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
1830 0, GST_CLOCK_TIME_NONE, 0);
1831 gst_pad_push_event (avimux->srcpad, event);
1833 gst_buffer_set_caps (header, GST_PAD_CAPS (avimux->srcpad));
1834 /* the first error survives */
1835 if (res == GST_FLOW_OK)
1836 res = gst_pad_push (avimux->srcpad, header);
1838 gst_pad_push (avimux->srcpad, header);
1840 event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES,
1841 avimux->total_data, GST_CLOCK_TIME_NONE, avimux->total_data);
1842 gst_pad_push_event (avimux->srcpad, event);
1844 avimux->write_header = TRUE;
1849 static GstFlowReturn
1850 gst_avi_mux_restart_file (GstAviMux * avimux)
1854 if ((res = gst_avi_mux_stop_file (avimux)) != GST_FLOW_OK)
1857 gst_pad_push_event (avimux->srcpad, gst_event_new_eos ());
1859 return gst_avi_mux_start_file (avimux);
1862 /* handle events (search) */
1864 gst_avi_mux_handle_event (GstPad * pad, GstEvent * event)
1869 avimux = GST_AVI_MUX (gst_pad_get_parent (pad));
1871 switch (GST_EVENT_TYPE (event)) {
1872 case GST_EVENT_TAG:{
1874 GstTagSetter *setter = GST_TAG_SETTER (avimux);
1875 const GstTagMergeMode mode = gst_tag_setter_get_tag_merge_mode (setter);
1877 gst_event_parse_tag (event, &list);
1878 gst_tag_setter_merge_tags (setter, list, mode);
1885 /* now GstCollectPads can take care of the rest, e.g. EOS */
1886 ret = avimux->collect_event (pad, event);
1888 gst_object_unref (avimux);
1893 /* send extra 'padding' data */
1894 static GstFlowReturn
1895 gst_avi_mux_send_pad_data (GstAviMux * avimux, gulong num_bytes)
1899 buffer = gst_buffer_new_and_alloc (num_bytes);
1900 memset (GST_BUFFER_DATA (buffer), 0, num_bytes);
1901 gst_buffer_set_caps (buffer, GST_PAD_CAPS (avimux->srcpad));
1902 return gst_pad_push (avimux->srcpad, buffer);
1906 static GstFlowReturn
1907 gst_avi_mux_do_buffer (GstAviMux * avimux, GstAviPad * avipad)
1910 GstBuffer *data, *header;
1911 gulong total_size, pad_bytes = 0;
1914 data = gst_collect_pads_pop (avimux->collect, avipad->collect);
1915 /* arrange downstream running time */
1916 data = gst_buffer_make_metadata_writable (data);
1917 GST_BUFFER_TIMESTAMP (data) =
1918 gst_segment_to_running_time (&avipad->collect->segment,
1919 GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (data));
1921 /* Prepend a special buffer to the first one for some formats */
1922 if (avipad->is_video) {
1923 GstAviVideoPad *vidpad = (GstAviVideoPad *) avipad;
1925 if (vidpad->prepend_buffer) {
1926 GstBuffer *newdata = gst_buffer_merge (vidpad->prepend_buffer, data);
1927 gst_buffer_copy_metadata (newdata, data, GST_BUFFER_COPY_TIMESTAMPS);
1928 gst_buffer_unref (data);
1929 gst_buffer_unref (vidpad->prepend_buffer);
1932 vidpad->prepend_buffer = NULL;
1936 if (avimux->restart) {
1937 if ((res = gst_avi_mux_restart_file (avimux)) != GST_FLOW_OK)
1941 /* need to restart or start a next avix chunk ? */
1942 if ((avimux->is_bigfile ? avimux->datax_size : avimux->data_size) +
1943 GST_BUFFER_SIZE (data) > GST_AVI_MAX_SIZE) {
1944 if (avimux->enable_large_avi) {
1945 if ((res = gst_avi_mux_bigfile (avimux, FALSE)) != GST_FLOW_OK)
1948 if ((res = gst_avi_mux_restart_file (avimux)) != GST_FLOW_OK)
1953 /* get header and record some stats */
1954 if (GST_BUFFER_SIZE (data) & 1) {
1955 pad_bytes = 2 - (GST_BUFFER_SIZE (data) & 1);
1957 header = gst_avi_mux_riff_get_header (avipad, GST_BUFFER_SIZE (data));
1958 total_size = GST_BUFFER_SIZE (header) + GST_BUFFER_SIZE (data) + pad_bytes;
1960 if (avimux->is_bigfile) {
1961 avimux->datax_size += total_size;
1963 avimux->data_size += total_size;
1966 if (G_UNLIKELY (avipad->hook))
1967 avipad->hook (avimux, avipad, data);
1969 /* the suggested buffer size is the max frame size */
1970 if (avipad->hdr.bufsize < GST_BUFFER_SIZE (data))
1971 avipad->hdr.bufsize = GST_BUFFER_SIZE (data);
1973 if (avipad->is_video) {
1974 avimux->total_frames++;
1976 if (avimux->is_bigfile) {
1977 avimux->numx_frames++;
1979 avimux->num_frames++;
1983 if (!GST_BUFFER_FLAG_IS_SET (data, GST_BUFFER_FLAG_DELTA_UNIT))
1986 GstAviAudioPad *audpad = (GstAviAudioPad *) avipad;
1989 audpad->audio_size += GST_BUFFER_SIZE (data);
1990 audpad->audio_time += GST_BUFFER_DURATION (data);
1993 gst_avi_mux_add_index (avimux, avipad, flags, GST_BUFFER_SIZE (data));
1995 /* prepare buffers for sending */
1996 gst_buffer_set_caps (header, GST_PAD_CAPS (avimux->srcpad));
1997 data = gst_buffer_make_metadata_writable (data);
1998 gst_buffer_set_caps (data, GST_PAD_CAPS (avimux->srcpad));
2000 GST_LOG_OBJECT (avimux, "pushing buffers: head, data");
2002 if ((res = gst_pad_push (avimux->srcpad, header)) != GST_FLOW_OK)
2004 if ((res = gst_pad_push (avimux->srcpad, data)) != GST_FLOW_OK)
2008 if ((res = gst_avi_mux_send_pad_data (avimux, pad_bytes)) != GST_FLOW_OK)
2012 /* if any push above fails, we're in trouble with file consistency anyway */
2013 avimux->total_data += total_size;
2014 avimux->idx_offset += total_size;
2019 /* pick the oldest buffer from the pads and push it */
2020 static GstFlowReturn
2021 gst_avi_mux_do_one_buffer (GstAviMux * avimux)
2023 GstAviPad *avipad, *best_pad;
2026 GstClockTime time, best_time, delay;
2028 node = avimux->sinkpads;
2030 best_time = GST_CLOCK_TIME_NONE;
2031 for (; node; node = node->next) {
2032 avipad = (GstAviPad *) node->data;
2034 if (!avipad->collect)
2037 if (!avipad->hdr.fcc_handler)
2038 goto not_negotiated;
2040 buffer = gst_collect_pads_peek (avimux->collect, avipad->collect);
2043 time = GST_BUFFER_TIMESTAMP (buffer);
2044 gst_buffer_unref (buffer);
2046 /* invalid should pass */
2047 if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
2048 time = gst_segment_to_running_time (&avipad->collect->segment,
2049 GST_FORMAT_TIME, time);
2050 if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
2051 GST_DEBUG_OBJECT (avimux, "clipping buffer on pad %s outside segment",
2052 GST_PAD_NAME (avipad->collect->pad));
2053 buffer = gst_collect_pads_pop (avimux->collect, avipad->collect);
2054 gst_buffer_unref (buffer);
2059 delay = avipad->is_video ? GST_SECOND / 2 : 0;
2061 /* invalid timestamp buffers pass first,
2062 * these are probably initialization buffers */
2063 if (best_pad == NULL || !GST_CLOCK_TIME_IS_VALID (time)
2064 || (GST_CLOCK_TIME_IS_VALID (best_time) && time + delay < best_time)) {
2066 best_time = time + delay;
2071 GST_LOG_OBJECT (avimux, "selected pad %s with time %" GST_TIME_FORMAT,
2072 GST_PAD_NAME (best_pad->collect->pad), GST_TIME_ARGS (best_time));
2074 return gst_avi_mux_do_buffer (avimux, best_pad);
2076 /* simply finish off the file and send EOS */
2077 gst_avi_mux_stop_file (avimux);
2078 gst_pad_push_event (avimux->srcpad, gst_event_new_eos ());
2079 return GST_FLOW_UNEXPECTED;
2085 GST_ELEMENT_ERROR (avimux, CORE, NEGOTIATION, (NULL),
2086 ("pad %s not negotiated", GST_PAD_NAME (avipad->collect->pad)));
2087 return GST_FLOW_NOT_NEGOTIATED;
2091 static GstFlowReturn
2092 gst_avi_mux_collect_pads (GstCollectPads * pads, GstAviMux * avimux)
2096 if (G_UNLIKELY (avimux->write_header)) {
2097 if ((res = gst_avi_mux_start_file (avimux)) != GST_FLOW_OK)
2101 return gst_avi_mux_do_one_buffer (avimux);
2106 gst_avi_mux_get_property (GObject * object,
2107 guint prop_id, GValue * value, GParamSpec * pspec)
2111 avimux = GST_AVI_MUX (object);
2115 g_value_set_boolean (value, avimux->enable_large_avi);
2118 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2124 gst_avi_mux_set_property (GObject * object,
2125 guint prop_id, const GValue * value, GParamSpec * pspec)
2129 avimux = GST_AVI_MUX (object);
2133 avimux->enable_large_avi = g_value_get_boolean (value);
2136 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
2141 static GstStateChangeReturn
2142 gst_avi_mux_change_state (GstElement * element, GstStateChange transition)
2145 GstStateChangeReturn ret;
2147 avimux = GST_AVI_MUX (element);
2149 switch (transition) {
2150 case GST_STATE_CHANGE_READY_TO_PAUSED:
2151 gst_collect_pads_start (avimux->collect);
2153 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
2155 case GST_STATE_CHANGE_PAUSED_TO_READY:
2156 gst_collect_pads_stop (avimux->collect);
2162 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
2163 if (ret == GST_STATE_CHANGE_FAILURE)
2166 switch (transition) {
2167 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
2169 case GST_STATE_CHANGE_PAUSED_TO_READY:
2170 gst_avi_mux_reset (avimux);
2172 case GST_STATE_CHANGE_READY_TO_NULL: