1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c Thu Nov 09 19:45:27 2006 +0000
1.3 @@ -0,0 +1,1137 @@
1.4 +/* GStreamer
1.5 + * Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br>
1.6 + * Rosfran Borges <rosfran.borges@indt.org.br>
1.7 + *
1.8 + * This library is free software; you can redistribute it and/or
1.9 + * modify it under the terms of the GNU Library General Public
1.10 + * License as published by the Free Software Foundation; either
1.11 + * version 2 of the License, or (at your option) any later version.
1.12 + *
1.13 + * This library is distributed in the hope that it will be useful,
1.14 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1.16 + * Library General Public License for more details.
1.17 + *
1.18 + * You should have received a copy of the GNU Library General Public
1.19 + * License along with this library; if not, write to the
1.20 + * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
1.21 + * Boston, MA 02111-1307, USA.
1.22 + */
1.23 +/* Element-Checklist-Version: 5 */
1.24 +
1.25 +/**
1.26 + * SECTION:element-nuvdemux
1.27 + *
1.28 + * <refsect2>
1.29 + * <para>
1.30 + * Demuxes an .nuv file into raw or compressed audio and/or video streams.
1.31 + * </para>
1.32 + * <para>
1.33 + * This element currently only supports pull-based scheduling.
1.34 + * </para>
1.35 + * <title>Example launch line</title>
1.36 + * <para>
1.37 + * <programlisting>
1.38 + * gst-launch filesrc test.nuv ! nuvdemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink
1.39 + * </programlisting>
1.40 + * Play (parse and decode) an .nuv file and try to output it to
1.41 + * an automatically detected soundcard and videosink. If the NUV file contains
1.42 + * compressed audio or video data, this will only work if you have the
1.43 + * right decoder elements/plugins installed.
1.44 + * </para>
1.45 + * </refsect2>
1.46 + *
1.47 + */
1.48 +
1.49 +#ifdef HAVE_CONFIG_H
1.50 +#include "config.h"
1.51 +#endif
1.52 +
1.53 +#include <gst/gst.h>
1.54 +#include <gst/gsterror.h>
1.55 +#include <gst/gstplugin.h>
1.56 +#include <string.h>
1.57 +
1.58 +#include "glib/gi18n.h"
1.59 +#include "gstnuvdemux.h"
1.60 +
1.61 +GST_DEBUG_CATEGORY_STATIC (nuvdemux_debug);
1.62 +#define GST_CAT_DEFAULT nuvdemux_debug
1.63 +
1.64 +
1.65 +#define GST_FLOW_ERROR_NO_DATA -101
1.66 +
1.67 +GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);
1.68 +
1.69 +static const GstElementDetails gst_nuv_demux_details =
1.70 +GST_ELEMENT_DETAILS ("Nuv demuxer",
1.71 + "Codec/Demuxer",
1.72 + "Demultiplex a .nuv file into audio and video",
1.73 + "Renato Araujo Oliveira Filho <renato.filho@indt.org.br>,"
1.74 + "Rosfran Borges <rosfran.borges@indt.org.br>");
1.75 +
1.76 +static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
1.77 + GST_PAD_SINK,
1.78 + GST_PAD_ALWAYS,
1.79 + GST_STATIC_CAPS ("video/x-nuv"));
1.80 +
1.81 +static GstStaticPadTemplate audio_src_template =
1.82 +GST_STATIC_PAD_TEMPLATE ("audio_src",
1.83 + GST_PAD_SRC,
1.84 + GST_PAD_SOMETIMES,
1.85 + GST_STATIC_CAPS_ANY);
1.86 +
1.87 +static GstStaticPadTemplate video_src_template =
1.88 +GST_STATIC_PAD_TEMPLATE ("video_src",
1.89 + GST_PAD_SRC,
1.90 + GST_PAD_SOMETIMES,
1.91 + GST_STATIC_CAPS_ANY);
1.92 +
1.93 +/* NUV Demux indexes init/dispose callers */
1.94 +static void gst_nuv_demux_index_init( nuv_demux_index **p_idx );
1.95 +static void gst_nuv_demux_index_clean( nuv_demux_index **p_idx );
1.96 +
1.97 +/* NUV Demux indexes manipulation functions */
1.98 +//static gint64 gst_nuv_demux_index_find_offset( GstNuvDemux *nuv, gint64 i_offset );
1.99 +static void gst_nuv_demux_index_append( GstNuvDemux *nuv, gint64 i_time, gint64 i_offset );
1.100 +static gint64 gst_nuv_demux_index_convert_time( GstNuvDemux *nuv, gint64 i_time );
1.101 +
1.102 +/* NUV Demux plug-in time-line functions */
1.103 +static void gst_nuv_demux_finalize (GObject * object);
1.104 +static GstStateChangeReturn gst_nuv_demux_change_state (GstElement * element,
1.105 + GstStateChange transition);
1.106 +static void gst_nuv_demux_loop (GstPad * pad);
1.107 +static GstFlowReturn gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf);
1.108 +static GstFlowReturn gst_nuv_demux_play (GstPad * pad);
1.109 +static gboolean gst_nuv_demux_sink_activate_pull (GstPad * sinkpad,
1.110 + gboolean active);
1.111 +static gboolean gst_nuv_demux_sink_activate (GstPad * sinkpad);
1.112 +static GstFlowReturn gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size,
1.113 + gboolean move, GstBuffer ** buffer);
1.114 +static void gst_nuv_demux_reset (GstNuvDemux * nuv);
1.115 +static gboolean gst_nuv_demux_handle_sink_event (GstPad * sinkpad,
1.116 + GstEvent * event);
1.117 +static gboolean gst_nuv_demux_handle_audio_src_event (GstPad * sinkpad,
1.118 + GstEvent * event);
1.119 +static gboolean gst_nuv_demux_handle_video_src_event (GstPad * sinkpad,
1.120 + GstEvent * event);
1.121 +static void gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv);
1.122 +static void gst_nuv_demux_send_eos (GstNuvDemux * nuv);
1.123 +
1.124 +/* GObject methods */
1.125 +GST_BOILERPLATE (GstNuvDemux, gst_nuv_demux, GstElement, GST_TYPE_ELEMENT);
1.126 +
1.127 +#if G_BYTE_ORDER == G_BIG_ENDIAN
1.128 +static inline gdouble
1.129 +_gdouble_swap_le_be (gdouble * d)
1.130 +{
1.131 + union
1.132 + {
1.133 + guint64 i;
1.134 + gdouble d;
1.135 + } u;
1.136 +
1.137 + u.d = *d;
1.138 + u.i = GUINT64_SWAP_LE_BE (u.i);
1.139 + return u.d;
1.140 +}
1.141 +
1.142 +#define READ_DOUBLE_FROM_LE(d) (_gdouble_swap_le_be((gdouble* ) d))
1.143 +#else /* G_BYTE_ORDER != G_BIG_ENDIAN */
1.144 +#define READ_DOUBLE_FROM_LE(d) *((gdouble* ) (d))
1.145 +#endif /* G_BYTE_ORDER != G_BIG_ENDIAN */
1.146 +
1.147 +static void
1.148 +gst_nuv_demux_base_init (gpointer klass)
1.149 +{
1.150 + GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
1.151 +
1.152 + gst_element_class_add_pad_template (element_class,
1.153 + gst_static_pad_template_get (&audio_src_template));
1.154 +
1.155 + gst_element_class_add_pad_template (element_class,
1.156 + gst_static_pad_template_get (&video_src_template));
1.157 +
1.158 + gst_element_class_add_pad_template (element_class,
1.159 + gst_static_pad_template_get (&sink_template));
1.160 + gst_element_class_set_details (element_class, &gst_nuv_demux_details);
1.161 +}
1.162 +
1.163 +static void
1.164 +gst_nuv_demux_class_init (GstNuvDemuxClass * klass)
1.165 +{
1.166 + GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
1.167 + GObjectClass *gobject_class = (GObjectClass *) klass;
1.168 +
1.169 + GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",
1.170 + 0, "Demuxer for NUV streams");
1.171 +
1.172 + parent_class = g_type_class_peek_parent (klass);
1.173 +
1.174 + gobject_class->finalize = gst_nuv_demux_finalize;
1.175 + gstelement_class->change_state = gst_nuv_demux_change_state;
1.176 +}
1.177 +
1.178 +static void
1.179 +gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)
1.180 +{
1.181 + nuv->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
1.182 +
1.183 + gst_pad_set_activate_function (nuv->sinkpad, gst_nuv_demux_sink_activate);
1.184 +
1.185 + gst_pad_set_activatepull_function (nuv->sinkpad,
1.186 + gst_nuv_demux_sink_activate_pull);
1.187 +
1.188 + gst_pad_set_chain_function (nuv->sinkpad,
1.189 + GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));
1.190 +
1.191 + gst_pad_set_event_function (nuv->sinkpad, gst_nuv_demux_handle_sink_event);
1.192 +
1.193 + gst_element_add_pad (GST_ELEMENT (nuv), nuv->sinkpad);
1.194 +
1.195 + gst_nuv_demux_index_init( &nuv->index_entries );
1.196 +
1.197 + nuv->adapter = NULL;
1.198 + nuv->mpeg_buffer = NULL;
1.199 + nuv->h = NULL;
1.200 + nuv->eh = NULL;
1.201 + nuv->fh = NULL;
1.202 + gst_nuv_demux_reset (nuv);
1.203 +}
1.204 +
1.205 +static void
1.206 +gst_nuv_demux_finalize (GObject * object)
1.207 +{
1.208 + GstNuvDemux *nuv = GST_NUV_DEMUX (object);
1.209 +
1.210 + if (nuv->mpeg_buffer != NULL) {
1.211 + gst_buffer_unref (nuv->mpeg_buffer);
1.212 + }
1.213 +
1.214 + if ( nuv->index_entries != NULL ) {
1.215 + gst_nuv_demux_index_clean( &nuv->index_entries );
1.216 + nuv->index_entries = NULL;
1.217 + }
1.218 +
1.219 + gst_nuv_demux_destoy_src_pad (nuv);
1.220 + gst_nuv_demux_reset (nuv);
1.221 + if (nuv->adapter != NULL) {
1.222 + gst_object_unref (nuv->adapter);
1.223 + }
1.224 + G_OBJECT_CLASS (parent_class)->finalize (object);
1.225 +}
1.226 +
1.227 +
1.228 +/*****************************************************************************
1.229 + * Indexes (timecode offset conversion) functions
1.230 + *****************************************************************************/
1.231 +
1.232 +static void
1.233 +gst_nuv_demux_index_init( nuv_demux_index **p_idx )
1.234 +{
1.235 + *p_idx = g_new0( nuv_demux_index, 1 );
1.236 + (*p_idx)->i_idx = 0;
1.237 + (*p_idx)->i_idx_max = 0;
1.238 +}
1.239 +
1.240 +static void
1.241 +gst_nuv_demux_index_clean( nuv_demux_index **p_idx )
1.242 +{
1.243 + if ( *p_idx != NULL ) {
1.244 + g_free( *p_idx );
1.245 + *p_idx = NULL;
1.246 + }
1.247 +
1.248 +}
1.249 +
1.250 +static void
1.251 +gst_nuv_demux_index_append( GstNuvDemux *nuv, gint64 i_time, gint64 i_offset )
1.252 +{
1.253 + nuv_demux_index *p_idx = nuv->index_entries;
1.254 +
1.255 + //if ( p_idx == NULL )
1.256 + // return;
1.257 +
1.258 + /* Be sure to append new entry (we don't insert point) */
1.259 + if( p_idx != NULL && p_idx->i_idx > 0 && p_idx->idx[p_idx->i_idx-1].i_time >= i_time )
1.260 + return;
1.261 +
1.262 + /* */
1.263 + if( p_idx->i_idx >= p_idx->i_idx_max )
1.264 + {
1.265 + if( p_idx->i_idx >= DEMUX_INDEX_SIZE_MAX )
1.266 + {
1.267 + /* Avoid too big index */
1.268 + const gint64 i_length = p_idx->idx[p_idx->i_idx-1].i_time -
1.269 + p_idx->idx[0].i_time;
1.270 + const gint i_count = DEMUX_INDEX_SIZE_MAX/2;
1.271 + gint i, j;
1.272 +
1.273 + /* We try to reduce the resolution of the index by a factor 2 */
1.274 + for( i = 1, j = 1; i < p_idx->i_idx; i++ )
1.275 + {
1.276 + if( p_idx->idx[i].i_time < j * i_length / i_count )
1.277 + continue;
1.278 +
1.279 + p_idx->idx[j++] = p_idx->idx[i];
1.280 + }
1.281 + p_idx->i_idx = j;
1.282 +
1.283 + if( p_idx->i_idx > 3 * DEMUX_INDEX_SIZE_MAX / 4 )
1.284 + {
1.285 + /* We haven't created enough space
1.286 + * (This method won't create a good index but work for sure) */
1.287 + for( i = 0; i < p_idx->i_idx/2; i++ )
1.288 + p_idx->idx[i] = p_idx->idx[2*i];
1.289 + p_idx->i_idx /= 2;
1.290 + }
1.291 + }
1.292 + else
1.293 + {
1.294 + p_idx->i_idx_max += 1000;
1.295 + }
1.296 + }
1.297 +
1.298 + /* */
1.299 + p_idx->idx[p_idx->i_idx].i_time = i_time;
1.300 + p_idx->idx[p_idx->i_idx].i_offset = i_offset;
1.301 +
1.302 + p_idx->i_idx++;
1.303 +}
1.304 +
1.305 +static gint64
1.306 +gst_nuv_demux_index_convert_time( GstNuvDemux *nuv, gint64 i_time )
1.307 +{
1.308 + nuv_demux_index *p_idx = nuv->index_entries;
1.309 +
1.310 + g_return_val_if_fail( p_idx != NULL , i_time );
1.311 +
1.312 + gint i_min = 0;
1.313 + gint i_max = p_idx->i_idx-1;
1.314 +
1.315 + /* Empty index */
1.316 + if( p_idx->i_idx <= 0 )
1.317 + return -1;
1.318 +
1.319 + /* Special border case */
1.320 + if( i_time <= p_idx->idx[0].i_time )
1.321 + return p_idx->idx[0].i_offset;
1.322 + if( i_time >= p_idx->idx[i_max].i_time )
1.323 + return p_idx->idx[i_max].i_offset;
1.324 +
1.325 + /* Dicho */
1.326 + for( ;; )
1.327 + {
1.328 + gint i_med;
1.329 +
1.330 + if( i_max - i_min <= 1 )
1.331 + break;
1.332 +
1.333 + i_med = (i_min+i_max)/2;
1.334 + if( p_idx->idx[i_med].i_time < i_time )
1.335 + i_min = i_med;
1.336 + else if( p_idx->idx[i_med].i_time > i_time )
1.337 + i_max = i_med;
1.338 + else
1.339 + return p_idx->idx[i_med].i_offset;
1.340 + }
1.341 +
1.342 + /* return nearest in time */
1.343 + if( i_time - p_idx->idx[i_min].i_time < p_idx->idx[i_max].i_time - i_time )
1.344 + return p_idx->idx[i_min].i_offset;
1.345 + else
1.346 + return p_idx->idx[i_max].i_offset;
1.347 +}
1.348 +
1.349 +/*****************************************************************************
1.350 + * Utils functions
1.351 + *****************************************************************************/
1.352 +
1.353 +static gboolean
1.354 +gst_nuv_demux_handle_sink_event (GstPad * sinkpad, GstEvent * event)
1.355 +{
1.356 + gboolean res = FALSE;
1.357 +
1.358 + switch (GST_EVENT_TYPE (event)) {
1.359 + case GST_EVENT_NEWSEGMENT:
1.360 + res = TRUE;
1.361 + break;
1.362 + default:
1.363 + return gst_pad_event_default (sinkpad, event);
1.364 + break;
1.365 + }
1.366 +
1.367 + gst_event_unref (event);
1.368 + return res;
1.369 +}
1.370 +
1.371 +/* HeaderLoad:
1.372 + */
1.373 +static GstFlowReturn
1.374 +gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header ** h_ret)
1.375 +{
1.376 + GstBuffer *buffer = NULL;
1.377 + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 72, TRUE, &buffer);
1.378 +
1.379 + if (res != GST_FLOW_OK)
1.380 + return res;
1.381 +
1.382 + nuv_header *h = g_new0 (nuv_header, 1);
1.383 +
1.384 + memcpy (h->id, buffer->data, 12);
1.385 + memcpy (h->version, buffer->data + 12, 5);
1.386 + h->i_width = GST_READ_UINT32_LE (&buffer->data[20]);
1.387 + h->i_height = GST_READ_UINT32_LE (&buffer->data[24]);
1.388 + h->i_width_desired = GST_READ_UINT32_LE (&buffer->data[28]);
1.389 + h->i_height_desired = GST_READ_UINT32_LE (&buffer->data[32]);
1.390 + h->i_mode = buffer->data[36];
1.391 + h->d_aspect = READ_DOUBLE_FROM_LE (&buffer->data[40]);
1.392 + h->d_fps = READ_DOUBLE_FROM_LE (&buffer->data[48]);
1.393 + h->i_video_blocks = GST_READ_UINT32_LE (&buffer->data[56]);
1.394 + h->i_audio_blocks = GST_READ_UINT32_LE (&buffer->data[60]);
1.395 + h->i_text_blocks = GST_READ_UINT32_LE (&buffer->data[64]);
1.396 + h->i_keyframe_distance = GST_READ_UINT32_LE (&buffer->data[68]);
1.397 +
1.398 + GST_DEBUG_OBJECT (nuv,
1.399 + "nuv: h=%s v=%s %dx%d a=%f fps=%f v=%d a=%d t=%d kfd=%d", h->id,
1.400 + h->version, h->i_width, h->i_height, h->d_aspect, h->d_fps,
1.401 + h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,
1.402 + h->i_keyframe_distance);
1.403 +
1.404 + *h_ret = h;
1.405 + gst_buffer_unref (buffer);
1.406 + return res;
1.407 +}
1.408 +
1.409 +static GstFlowReturn
1.410 +gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)
1.411 +{
1.412 + GstFlowReturn res = gst_nuv_demux_header_load (nuv, &nuv->h);
1.413 +
1.414 + if (res == GST_FLOW_OK)
1.415 + nuv->state = GST_NUV_DEMUX_EXTRA_DATA;
1.416 + return res;
1.417 +}
1.418 +
1.419 +/*
1.420 + * Read NUV file tag
1.421 + */
1.422 +static GstFlowReturn
1.423 +gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)
1.424 +{
1.425 + GstFlowReturn res = GST_FLOW_OK;
1.426 + GstBuffer *file_header = NULL;
1.427 +
1.428 + res = gst_nuv_demux_read_bytes (nuv, 12, FALSE, &file_header);
1.429 + if (res != GST_FLOW_OK) {
1.430 + return res;
1.431 + } else {
1.432 + if (strncmp ((gchar *) file_header->data, "MythTVVideo", 11) ||
1.433 + strncmp ((gchar *) file_header->data, "NuppelVideo", 11)) {
1.434 + nuv->state = GST_NUV_DEMUX_HEADER_DATA;
1.435 + } else {
1.436 + GST_DEBUG_OBJECT (nuv, "error parsing file header");
1.437 + nuv->state = GST_NUV_DEMUX_INVALID_DATA;
1.438 + res = GST_FLOW_ERROR;
1.439 + }
1.440 + }
1.441 + if (file_header != NULL) {
1.442 + gst_buffer_unref (file_header);
1.443 + }
1.444 + return res;
1.445 +}
1.446 +
1.447 +/* FrameHeaderLoad:
1.448 + */
1.449 +static GstFlowReturn
1.450 +gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header ** h_ret)
1.451 +{
1.452 + unsigned char *data;
1.453 + nuv_frame_header *h;
1.454 + GstBuffer *buf = NULL;
1.455 +
1.456 + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 12, TRUE, &buf);
1.457 +
1.458 + if (res != GST_FLOW_OK) {
1.459 + if (buf != NULL) {
1.460 + gst_buffer_unref (buf);
1.461 + }
1.462 + return res;
1.463 + }
1.464 +
1.465 + h = g_new0 (nuv_frame_header, 1);
1.466 + data = buf->data;
1.467 +
1.468 + h->i_type = data[0];
1.469 + h->i_compression = data[1];
1.470 + h->i_keyframe = data[2];
1.471 + h->i_filters = data[3];
1.472 +
1.473 + h->i_timecode = GST_READ_UINT32_LE (&data[4]);
1.474 +
1.475 +
1.476 + h->i_length = GST_READ_UINT32_LE (&data[8]);
1.477 + GST_DEBUG_OBJECT (nuv, "frame hdr: t=%c c=%c k=%d f=0x%x timecode=%d l=%d",
1.478 + h->i_type,
1.479 + h->i_compression ? h->i_compression : ' ',
1.480 + h->i_keyframe ? h->i_keyframe : ' ',
1.481 + h->i_filters, h->i_timecode, h->i_length);
1.482 +
1.483 + *h_ret = h;
1.484 + gst_buffer_unref (buf);
1.485 + return GST_FLOW_OK;
1.486 +}
1.487 +
1.488 +static GstFlowReturn
1.489 +gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,
1.490 + nuv_extended_header ** h_ret)
1.491 +{
1.492 + unsigned char *data;
1.493 + GstBuffer *buff = NULL;
1.494 + nuv_extended_header *h;
1.495 +
1.496 +
1.497 + GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 512, TRUE, &buff);
1.498 +
1.499 + if (res != GST_FLOW_OK) {
1.500 + if (buff != NULL) {
1.501 + gst_buffer_unref (buff);
1.502 + }
1.503 + return res;
1.504 + }
1.505 +
1.506 + h = g_new0 (nuv_extended_header, 1);
1.507 + data = buff->data;
1.508 + h->i_version = GST_READ_UINT32_LE (&data[0]);
1.509 + h->i_video_fcc = GST_MAKE_FOURCC (data[4], data[5], data[6], data[7]);
1.510 + h->i_audio_fcc = GST_MAKE_FOURCC (data[8], data[9], data[10], data[11]);
1.511 + h->i_audio_sample_rate = GST_READ_UINT32_LE (&data[12]);
1.512 + h->i_audio_bits_per_sample = GST_READ_UINT32_LE (&data[16]);
1.513 + h->i_audio_channels = GST_READ_UINT32_LE (&data[20]);
1.514 + h->i_audio_compression_ratio = GST_READ_UINT32_LE (&data[24]);
1.515 + h->i_audio_quality = GST_READ_UINT32_LE (&data[28]);
1.516 + h->i_rtjpeg_quality = GST_READ_UINT32_LE (&data[32]);
1.517 + h->i_rtjpeg_luma_filter = GST_READ_UINT32_LE (&data[36]);
1.518 + h->i_rtjpeg_chroma_filter = GST_READ_UINT32_LE (&data[40]);
1.519 + h->i_lavc_bitrate = GST_READ_UINT32_LE (&data[44]);
1.520 + h->i_lavc_qmin = GST_READ_UINT32_LE (&data[48]);
1.521 + h->i_lavc_qmin = GST_READ_UINT32_LE (&data[52]);
1.522 + h->i_lavc_maxqdiff = GST_READ_UINT32_LE (&data[56]);
1.523 + h->i_seekable_offset = GST_READ_UINT64_LE (&data[60]);
1.524 + h->i_keyframe_adjust_offset = GST_READ_UINT64_LE (&data[68]);
1.525 +
1.526 + GST_DEBUG_OBJECT (nuv,
1.527 + "ex hdr: v=%d vffc=%4.4s afcc=%4.4s %dHz %dbits ach=%d acr=%d aq=%d"
1.528 + "rtjpeg q=%d lf=%d lc=%d lavc br=%d qmin=%d qmax=%d maxqdiff=%d seekableoff=%lld keyfao=%lld",
1.529 + h->i_version, (gchar *) & h->i_video_fcc, (gchar *) & h->i_audio_fcc,
1.530 + h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,
1.531 + h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,
1.532 + h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,
1.533 + h->i_lavc_qmin, h->i_lavc_qmax, h->i_lavc_maxqdiff, h->i_seekable_offset,
1.534 + h->i_keyframe_adjust_offset);
1.535 +
1.536 + *h_ret = h;
1.537 + gst_buffer_unref (buff);
1.538 + return res;
1.539 +}
1.540 +
1.541 +static gboolean
1.542 +gst_nuv_demux_handle_audio_src_event (GstPad * pad, GstEvent * event)
1.543 +{
1.544 + gst_event_unref (event);
1.545 + return FALSE;
1.546 +}
1.547 +
1.548 +static gboolean
1.549 +gst_nuv_demux_handle_video_src_event (GstPad * pad, GstEvent * event)
1.550 +{
1.551 + gst_event_unref (event);
1.552 + return FALSE;
1.553 +}
1.554 +
1.555 +static void
1.556 +gst_nuv_demux_create_pads (GstNuvDemux * nuv)
1.557 +{
1.558 + if (nuv->h->i_video_blocks != 0) {
1.559 + GstCaps *video_caps = NULL;
1.560 +
1.561 + nuv->src_video_pad =
1.562 + gst_pad_new_from_static_template (&video_src_template, "video_src");
1.563 +
1.564 + video_caps = gst_caps_new_simple ("video/x-divx",
1.565 + "divxversion", G_TYPE_INT, 4,
1.566 + "width", G_TYPE_INT, nuv->h->i_width,
1.567 + "height", G_TYPE_INT, nuv->h->i_height,
1.568 + "framerate", GST_TYPE_FRACTION, (gint) (nuv->h->d_fps * 1000.0f), 1000,
1.569 + "pixel-aspect-ratio", GST_TYPE_FRACTION,
1.570 + (gint) (nuv->h->d_aspect * 1000.0f), 1000, NULL);
1.571 +
1.572 + gst_pad_use_fixed_caps (nuv->src_video_pad);
1.573 + gst_pad_set_caps (nuv->src_video_pad, video_caps);
1.574 +
1.575 + gst_pad_set_event_function (nuv->src_video_pad,
1.576 + gst_nuv_demux_handle_video_src_event);
1.577 + gst_pad_set_active (nuv->src_video_pad, TRUE);
1.578 + gst_element_add_pad (GST_ELEMENT (nuv), nuv->src_video_pad);
1.579 +
1.580 + gst_caps_unref (video_caps);
1.581 + }
1.582 +
1.583 + if (nuv->h->i_audio_blocks != 0) {
1.584 + GstCaps *audio_caps = NULL;
1.585 +
1.586 + nuv->src_audio_pad =
1.587 + gst_pad_new_from_static_template (&audio_src_template, "audio_src");
1.588 +
1.589 + audio_caps = gst_caps_new_simple ("audio/mpeg",
1.590 + "rate", G_TYPE_INT, nuv->eh->i_audio_sample_rate,
1.591 + "format", GST_TYPE_FOURCC, nuv->eh->i_audio_fcc,
1.592 + "channels", G_TYPE_INT, nuv->eh->i_audio_channels,
1.593 + "mpegversion", G_TYPE_INT, nuv->eh->i_version, NULL);
1.594 +
1.595 + gst_pad_use_fixed_caps (nuv->src_audio_pad);
1.596 + gst_pad_set_caps (nuv->src_audio_pad, audio_caps);
1.597 +
1.598 + gst_pad_set_event_function (nuv->src_audio_pad,
1.599 + gst_nuv_demux_handle_audio_src_event);
1.600 + gst_pad_set_active (nuv->src_audio_pad, TRUE);
1.601 + gst_element_add_pad (GST_ELEMENT (nuv), nuv->src_audio_pad);
1.602 +
1.603 + gst_caps_unref (audio_caps);
1.604 + }
1.605 +
1.606 + gst_element_no_more_pads (GST_ELEMENT (nuv));
1.607 +}
1.608 +
1.609 +static GstFlowReturn
1.610 +gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)
1.611 +{
1.612 + GstFlowReturn ret = GST_FLOW_OK;
1.613 +
1.614 + ret = gst_nuv_demux_frame_header_load (nuv, &nuv->fh);
1.615 + if (ret != GST_FLOW_OK)
1.616 + return ret;
1.617 +
1.618 + nuv->state = GST_NUV_DEMUX_MOVI;
1.619 + return ret;
1.620 +}
1.621 +
1.622 +static GstFlowReturn
1.623 +gst_nuv_demux_stream_data (GstNuvDemux * nuv)
1.624 +{
1.625 + GstFlowReturn ret = GST_FLOW_OK;
1.626 + GstBuffer *buf = NULL;
1.627 + nuv_frame_header *h = nuv->fh;
1.628 +
1.629 + gint64 table_timecode = 0;
1.630 +
1.631 + if (h->i_type == 'R')
1.632 + goto done;
1.633 +
1.634 + table_timecode = h->i_timecode;
1.635 +
1.636 + /* append the frame's header timecode field, and the actual offset */
1.637 + if ( h->i_type == 'V' )
1.638 + gst_nuv_demux_index_append( nuv, h->i_timecode, nuv->video_offset );
1.639 + else if ( h->i_type == 'A' )
1.640 + gst_nuv_demux_index_append( nuv, h->i_timecode, nuv->audio_offset );
1.641 +
1.642 + if (h->i_length > 0) {
1.643 + ret = gst_nuv_demux_read_bytes (nuv, h->i_length, TRUE, &buf);
1.644 + if (ret != GST_FLOW_OK)
1.645 + return ret;
1.646 +
1.647 + /* search for a valid timecode in the indexes list (find the nearest valid timecode) */
1.648 + if ( h->i_timecode < 0 ) {
1.649 + /* convert this actual timecode to a valid index in the timecode's table */
1.650 + gint64 pos = gst_nuv_demux_index_convert_time( nuv, h->i_timecode );
1.651 +
1.652 + /* just get the timecode from the timecode's table */
1.653 + table_timecode = nuv->index_entries->idx[pos].i_time * GST_MSECOND;
1.654 + } else {
1.655 + table_timecode = h->i_timecode * GST_MSECOND;
1.656 + }
1.657 +
1.658 + GST_BUFFER_TIMESTAMP (buf) = table_timecode;
1.659 + }
1.660 +
1.661 + switch (h->i_type) {
1.662 + case 'V':
1.663 + {
1.664 + if (h->i_length == 0)
1.665 + break;
1.666 +
1.667 + if ( !gst_pad_is_linked( nuv->src_video_pad ) )
1.668 + break;
1.669 +
1.670 + //GST_PAD_STREAM_LOCK(nuv->src_video_pad);
1.671 +
1.672 + GST_BUFFER_SIZE (buf) = h->i_length;
1.673 + gst_buffer_set_caps (buf, GST_PAD_CAPS (nuv->src_video_pad));
1.674 + ret = gst_pad_push (nuv->src_video_pad, buf);
1.675 + nuv->video_offset += h->i_length;
1.676 +
1.677 + //GST_PAD_STREAM_UNLOCK(nuv->src_video_pad);
1.678 + break;
1.679 + }
1.680 + case 'A':
1.681 + {
1.682 + if (h->i_length == 0)
1.683 + break;
1.684 +
1.685 + if ( !gst_pad_is_linked( nuv->src_audio_pad ) )
1.686 + break;
1.687 +
1.688 + //GST_PAD_STREAM_LOCK(nuv->src_audio_pad);
1.689 +
1.690 + GST_BUFFER_SIZE (buf) = h->i_length;
1.691 + gst_buffer_set_caps (buf, GST_PAD_CAPS (nuv->src_audio_pad));
1.692 + ret = gst_pad_push (nuv->src_audio_pad, buf);
1.693 + nuv->audio_offset += h->i_length;
1.694 +
1.695 + //GST_PAD_STREAM_UNLOCK(nuv->src_audio_pad);
1.696 + break;
1.697 + }
1.698 + case 'S':
1.699 + {
1.700 + switch (h->i_compression) {
1.701 + case 'V':
1.702 + if ( !gst_pad_is_linked( nuv->src_video_pad ) )
1.703 + break;
1.704 +
1.705 + //GST_PAD_STREAM_LOCK(nuv->src_video_pad);
1.706 + gst_pad_push_event (nuv->src_video_pad,
1.707 + gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, table_timecode,
1.708 + GST_CLOCK_TIME_NONE, 0));
1.709 + //GST_PAD_STREAM_UNLOCK(nuv->src_video_pad);
1.710 + break;
1.711 + case 'A':
1.712 + if ( !gst_pad_is_linked( nuv->src_audio_pad ) )
1.713 + break;
1.714 +
1.715 + //GST_PAD_STREAM_LOCK(nuv->src_audio_pad);
1.716 + gst_pad_push_event (nuv->src_audio_pad,
1.717 + gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, table_timecode,
1.718 + GST_CLOCK_TIME_NONE, 0));
1.719 + //GST_PAD_STREAM_UNLOCK(nuv->src_audio_pad);
1.720 + break;
1.721 + default:
1.722 + break;
1.723 + }
1.724 + }
1.725 + default:
1.726 + if (buf != NULL)
1.727 + gst_buffer_unref (buf);
1.728 +
1.729 + break;
1.730 + }
1.731 +
1.732 +done:
1.733 + nuv->state = GST_NUV_DEMUX_FRAME_HEADER;
1.734 + g_free (nuv->fh);
1.735 + nuv->fh = NULL;
1.736 + return ret;
1.737 +}
1.738 +
1.739 +static GstFlowReturn
1.740 +gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)
1.741 +{
1.742 + GstFlowReturn ret = GST_FLOW_OK;
1.743 +
1.744 + /* ffmpeg extra data */
1.745 + ret =
1.746 + gst_nuv_demux_read_bytes (nuv, nuv->mpeg_data_size, TRUE,
1.747 + &nuv->mpeg_buffer);
1.748 + if (ret != GST_FLOW_OK) {
1.749 + return ret; //GST_FLOW_ERROR;
1.750 + }
1.751 + GST_BUFFER_SIZE (nuv->mpeg_buffer) = nuv->mpeg_data_size;
1.752 + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER;
1.753 + return ret;
1.754 +}
1.755 +
1.756 +static GstFlowReturn
1.757 +gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)
1.758 +{
1.759 + GstFlowReturn ret = GST_FLOW_OK;
1.760 +
1.761 + /* Load 'D' */
1.762 + nuv_frame_header *h;
1.763 +
1.764 + ret = gst_nuv_demux_frame_header_load (nuv, &h);
1.765 + if (ret != GST_FLOW_OK)
1.766 + return ret;
1.767 +
1.768 + if (h->i_type != 'D') {
1.769 + g_free (h);
1.770 + return GST_FLOW_ERROR;
1.771 + }
1.772 +
1.773 + if (h->i_length > 0) {
1.774 + if (h->i_compression == 'F') {
1.775 + nuv->state = GST_NUV_DEMUX_MPEG_DATA;
1.776 + } else {
1.777 + g_free (h);
1.778 + return GST_FLOW_ERROR;
1.779 + }
1.780 + } else {
1.781 + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER;
1.782 + }
1.783 +
1.784 + g_free (h);
1.785 + h = NULL;
1.786 + return ret;
1.787 +}
1.788 +
1.789 +static GstFlowReturn
1.790 +gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)
1.791 +{
1.792 + GstFlowReturn ret = GST_FLOW_OK;
1.793 +
1.794 + ret = gst_nuv_demux_extended_header_load (nuv, &nuv->eh);
1.795 + if (ret != GST_FLOW_OK)
1.796 + return ret;
1.797 +
1.798 + gst_nuv_demux_create_pads (nuv);
1.799 + nuv->state = GST_NUV_DEMUX_FRAME_HEADER;
1.800 + return ret;
1.801 +}
1.802 +
1.803 +static GstFlowReturn
1.804 +gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)
1.805 +{
1.806 + GstBuffer *buf = NULL;
1.807 + GstFlowReturn res = GST_FLOW_OK;
1.808 +
1.809 + res = gst_nuv_demux_read_bytes (nuv, 1, FALSE, &buf);
1.810 + if (res != GST_FLOW_OK) {
1.811 + if (buf != NULL) {
1.812 + gst_buffer_unref (buf);
1.813 + }
1.814 + return res;
1.815 + }
1.816 +
1.817 + if (buf->data[0] == 'X') {
1.818 + gst_buffer_unref (buf);
1.819 + buf = NULL;
1.820 + nuv_frame_header *h = NULL;
1.821 +
1.822 + res = gst_nuv_demux_frame_header_load (nuv, &h);
1.823 + if (res != GST_FLOW_OK)
1.824 + return res;
1.825 +
1.826 + if (h->i_length != 512) {
1.827 + g_free (h);
1.828 + return GST_FLOW_ERROR;
1.829 + }
1.830 + g_free (h);
1.831 + h = NULL;
1.832 + nuv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;
1.833 + } else {
1.834 + nuv->state = GST_NUV_DEMUX_INVALID_DATA;
1.835 + g_object_unref (buf);
1.836 + GST_ELEMENT_WARNING (nuv, STREAM, FAILED,
1.837 + (_("incomplete NUV support")), ("incomplete NUV support"));
1.838 + return GST_FLOW_ERROR;
1.839 + }
1.840 + return res;
1.841 +}
1.842 +
1.843 +static GstFlowReturn
1.844 +gst_nuv_demux_play (GstPad * pad)
1.845 +{
1.846 + GstFlowReturn res = GST_FLOW_OK;
1.847 + GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));
1.848 +
1.849 + switch (nuv->state) {
1.850 + case GST_NUV_DEMUX_START:
1.851 + res = gst_nuv_demux_stream_file_header (nuv);
1.852 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.853 + goto pause;
1.854 + }
1.855 + if (nuv->state != GST_NUV_DEMUX_HEADER_DATA)
1.856 + break;
1.857 +
1.858 + case GST_NUV_DEMUX_HEADER_DATA:
1.859 + res = gst_nuv_demux_stream_header_data (nuv);
1.860 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.861 + goto pause;
1.862 + }
1.863 + if (nuv->state != GST_NUV_DEMUX_EXTRA_DATA)
1.864 + break;
1.865 +
1.866 + case GST_NUV_DEMUX_EXTRA_DATA:
1.867 + res = gst_nuv_demux_stream_extra_data (nuv);
1.868 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.869 + goto pause;
1.870 + }
1.871 + if (nuv->state != GST_NUV_DEMUX_MPEG_DATA)
1.872 + break;
1.873 +
1.874 + case GST_NUV_DEMUX_MPEG_DATA:
1.875 + res = gst_nuv_demux_stream_mpeg_data (nuv);
1.876 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.877 + goto pause;
1.878 + }
1.879 +
1.880 + if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER)
1.881 + break;
1.882 +
1.883 + case GST_NUV_DEMUX_EXTEND_HEADER:
1.884 + res = gst_nuv_demux_stream_extend_header (nuv);
1.885 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.886 + goto pause;
1.887 + }
1.888 + if (nuv->state != GST_NUV_DEMUX_EXTEND_HEADER_DATA)
1.889 + break;
1.890 +
1.891 + case GST_NUV_DEMUX_EXTEND_HEADER_DATA:
1.892 + res = gst_nuv_demux_stream_extend_header_data (nuv);
1.893 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.894 + goto pause;
1.895 + }
1.896 +
1.897 + if (nuv->state != GST_NUV_DEMUX_FRAME_HEADER)
1.898 + break;
1.899 +
1.900 + case GST_NUV_DEMUX_FRAME_HEADER:
1.901 + res = gst_nuv_demux_read_head_frame (nuv);
1.902 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {
1.903 + goto pause;
1.904 + }
1.905 + if (nuv->state != GST_NUV_DEMUX_MOVI)
1.906 + break;
1.907 +
1.908 + case GST_NUV_DEMUX_MOVI:
1.909 + res = gst_nuv_demux_stream_data (nuv);
1.910 + if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA) && (res != GST_FLOW_CUSTOM_ERROR)) {
1.911 + goto pause;
1.912 + }
1.913 + break;
1.914 + case GST_NUV_DEMUX_INVALID_DATA:
1.915 + goto pause;
1.916 + break;
1.917 + default:
1.918 + g_assert_not_reached ();
1.919 + }
1.920 +
1.921 + GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->state,
1.922 + gst_flow_get_name (res));
1.923 +
1.924 + return GST_FLOW_OK;
1.925 +
1.926 +pause:
1.927 + GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));
1.928 + gst_pad_pause_task (nuv->sinkpad);
1.929 + if (GST_FLOW_IS_FATAL (res)) {
1.930 + GST_ELEMENT_ERROR (nuv, STREAM, FAILED,
1.931 + (_("Internal data stream error.")),
1.932 + ("streaming stopped, reason %s", gst_flow_get_name (res)));
1.933 +
1.934 + gst_nuv_demux_send_eos (nuv);
1.935 + }
1.936 + return res;
1.937 +}
1.938 +
1.939 +static void
1.940 +gst_nuv_demux_send_eos (GstNuvDemux * nuv)
1.941 +{
1.942 + gst_element_post_message (GST_ELEMENT (nuv),
1.943 + gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));
1.944 +
1.945 + if (nuv->src_video_pad)
1.946 + gst_pad_push_event (nuv->src_video_pad, gst_event_new_eos ());
1.947 + if (nuv->src_audio_pad)
1.948 + gst_pad_push_event (nuv->src_audio_pad, gst_event_new_eos ());
1.949 +}
1.950 +
1.951 +static GstFlowReturn
1.952 +gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,
1.953 + GstBuffer ** buffer)
1.954 +{
1.955 + GstFlowReturn ret = GST_FLOW_OK;
1.956 +
1.957 + if (size == 0) {
1.958 + *buffer = gst_buffer_new ();
1.959 + return ret;
1.960 + }
1.961 +
1.962 + if (nuv->mode == 0) {
1.963 + ret = gst_pad_pull_range (nuv->sinkpad, nuv->offset, size, buffer);
1.964 + if (ret == GST_FLOW_OK) {
1.965 + if (move) {
1.966 + nuv->offset += size;
1.967 + }
1.968 + /* got eos */
1.969 + } else if (ret == GST_FLOW_UNEXPECTED) {
1.970 + gst_nuv_demux_send_eos (nuv);
1.971 + return GST_FLOW_WRONG_STATE;
1.972 + }
1.973 + } else {
1.974 + if (gst_adapter_available (nuv->adapter) < size)
1.975 + return GST_FLOW_ERROR_NO_DATA;
1.976 +
1.977 + if (move) {
1.978 + *buffer = gst_adapter_take_buffer (nuv->adapter, size);
1.979 + } else {
1.980 + guint8 *data = NULL;
1.981 +
1.982 + data = (guint8 *) gst_adapter_peek (nuv->adapter, size);
1.983 + *buffer = gst_buffer_new ();
1.984 + gst_buffer_set_data (*buffer, data, size);
1.985 + }
1.986 + }
1.987 +
1.988 +
1.989 + return ret;
1.990 +}
1.991 +
1.992 +static gboolean
1.993 +gst_nuv_demux_sink_activate (GstPad * sinkpad)
1.994 +{
1.995 + gboolean res = TRUE;
1.996 + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));
1.997 +
1.998 + if (gst_pad_check_pull_range (sinkpad)) {
1.999 + nuv->mode = 0;
1.1000 + if (nuv->adapter) {
1.1001 + gst_adapter_clear (nuv->adapter);
1.1002 + g_object_unref (nuv->adapter);
1.1003 + nuv->adapter = NULL;
1.1004 + }
1.1005 + res = gst_pad_activate_pull (sinkpad, TRUE);
1.1006 + } else {
1.1007 + nuv->mode = 1;
1.1008 + if (nuv->adapter) {
1.1009 + gst_adapter_clear (nuv->adapter);
1.1010 + } else {
1.1011 + nuv->adapter = gst_adapter_new ();
1.1012 + }
1.1013 + res = gst_pad_activate_push (sinkpad, TRUE);
1.1014 + }
1.1015 +
1.1016 + g_object_unref (nuv);
1.1017 + return res;
1.1018 +}
1.1019 +
1.1020 +static gboolean
1.1021 +gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
1.1022 +{
1.1023 + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));
1.1024 +
1.1025 + if (active) {
1.1026 + gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);
1.1027 + } else {
1.1028 + gst_pad_stop_task (sinkpad);
1.1029 + }
1.1030 + gst_object_unref (nuv);
1.1031 +
1.1032 + return TRUE;
1.1033 +}
1.1034 +
1.1035 +static GstFlowReturn
1.1036 +gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)
1.1037 +{
1.1038 + GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));
1.1039 +
1.1040 + gst_adapter_push (nuv->adapter, buf);
1.1041 +
1.1042 + return gst_nuv_demux_play (pad);
1.1043 +}
1.1044 +
1.1045 +static void
1.1046 +gst_nuv_demux_loop (GstPad * pad)
1.1047 +{
1.1048 + gst_nuv_demux_play (pad);
1.1049 +}
1.1050 +
1.1051 +static void
1.1052 +gst_nuv_demux_reset (GstNuvDemux * nuv)
1.1053 +{
1.1054 + nuv->state = GST_NUV_DEMUX_START;
1.1055 + nuv->mode = 0;
1.1056 + nuv->offset = 0;
1.1057 + nuv->video_offset = 0;
1.1058 + nuv->audio_offset = 0;
1.1059 +
1.1060 + if (nuv->adapter != NULL)
1.1061 + gst_adapter_clear (nuv->adapter);
1.1062 +
1.1063 + if (nuv->mpeg_buffer != NULL) {
1.1064 + gst_buffer_unref (nuv->mpeg_buffer);
1.1065 + nuv->mpeg_buffer = NULL;
1.1066 + }
1.1067 +
1.1068 + g_free (nuv->h);
1.1069 + nuv->h = NULL;
1.1070 +
1.1071 + g_free (nuv->eh);
1.1072 + nuv->eh = NULL;
1.1073 +
1.1074 + g_free (nuv->fh);
1.1075 + nuv->fh = NULL;
1.1076 +}
1.1077 +
1.1078 +static void
1.1079 +gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)
1.1080 +{
1.1081 + if (nuv->src_video_pad) {
1.1082 + gst_element_remove_pad (GST_ELEMENT (nuv), nuv->src_video_pad);
1.1083 + nuv->src_video_pad = NULL;
1.1084 + }
1.1085 +
1.1086 + if (nuv->src_audio_pad) {
1.1087 + gst_element_remove_pad (GST_ELEMENT (nuv), nuv->src_audio_pad);
1.1088 + nuv->src_audio_pad = NULL;
1.1089 + }
1.1090 +}
1.1091 +
1.1092 +static GstStateChangeReturn
1.1093 +gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)
1.1094 +{
1.1095 + GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
1.1096 +
1.1097 + switch (transition) {
1.1098 + case GST_STATE_CHANGE_READY_TO_PAUSED:
1.1099 + break;
1.1100 + default:
1.1101 + break;
1.1102 + }
1.1103 +
1.1104 + ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1.1105 + if (ret == GST_STATE_CHANGE_FAILURE)
1.1106 + goto done;
1.1107 +
1.1108 + switch (transition) {
1.1109 + case GST_STATE_CHANGE_PAUSED_TO_READY:
1.1110 + gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));
1.1111 + gst_nuv_demux_reset (GST_NUV_DEMUX (element));
1.1112 + break;
1.1113 + default:
1.1114 + break;
1.1115 + }
1.1116 +
1.1117 +done:
1.1118 + return ret;
1.1119 +}
1.1120 +
1.1121 +static gboolean
1.1122 +plugin_init (GstPlugin * plugin)
1.1123 +{
1.1124 +#ifdef ENABLE_NLS
1.1125 + setlocale (LC_ALL, "");
1.1126 + bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
1.1127 +#endif /* ENABLE_NLS */
1.1128 +
1.1129 + if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,
1.1130 + GST_TYPE_NUV_DEMUX)) {
1.1131 + return FALSE;
1.1132 + }
1.1133 + return TRUE;
1.1134 +}
1.1135 +
1.1136 +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
1.1137 + GST_VERSION_MINOR,
1.1138 + "nuvdemux",
1.1139 + "Demuxes and muxes audio and video",
1.1140 + plugin_init, VERSION, "LGPL", "NuvDemux", "")