gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@fbe02bb1f3f9

     1 /* GStreamer

     2  * Copyright (C) <2006> Renato Araujo Oliveira Filho <renato.filho@indt.org.br>

     3  *                      Rosfran Borges <rosfran.borges@indt.org.br>

     4  *

     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.

     9  *

    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.

    14  *

    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.

    19  */

    20 /* Element-Checklist-Version: 5 */

    22 /**

    23  * SECTION:element-nuvdemux

    24  *

    25  * <refsect2>

    26  * <para>

    27  * Demuxes an .nuv file into raw or compressed audio and/or video streams.

    28  * </para>

    29  * <para>

    30  * This element currently only supports pull-based scheduling.

    31  * </para>

    32  * <title>Example launch line</title>

    33  * <para>

    34  * <programlisting>

    35  * gst-launch filesrc test.nuv ! nuvdemux name=demux  demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink   demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink

    36  * </programlisting>

    37  * Play (parse and decode) an .nuv file and try to output it to

    38  * an automatically detected soundcard and videosink. If the NUV file contains

    39  * compressed audio or video data, this will only work if you have the

    40  * right decoder elements/plugins installed.

    41  * </para>

    42  * </refsect2>

    43  *

    44  */

    46 #ifdef HAVE_CONFIG_H

    47 #include "config.h"

    48 #endif

    50 #include <gst/gst.h>

    51 #include <gst/gsterror.h>

    52 #include <gst/gstplugin.h>

    53 #include <string.h>

    54 #include <math.h>

    56 #include "glib/gi18n.h"

    57 #include "gstnuvdemux.h"

    59 #define GST_NUV_DEMUX_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_NUV_DEMUX, GstNuvDemuxPrivate))

    61 GST_DEBUG_CATEGORY_STATIC (nuvdemux_debug);

    62 #define GST_CAT_DEFAULT nuvdemux_debug

    63 #define GST_FLOW_ERROR_NO_DATA  -101

    65 enum

    66 {

    67    NUV_PUSH_MODE = 0,

    68    NUV_PULL_MODE

    69 };

    71 GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);

    73 static const GstElementDetails gst_nuv_demux_details =

    74 GST_ELEMENT_DETAILS ("Nuv demuxer",

    75     "Codec/Demuxer",

    76     "Demultiplex a .nuv file into audio and video",

    77     "Renato Araujo Oliveira Filho <renato.filho@indt.org.br>,"

    78     "Rosfran Borges <rosfran.borges@indt.org.br>");

    81 /* file header */

    82 typedef struct

    83 {

    84     gchar id[12];       /* "NuppelVideo\0" or "MythTVVideo\0" */

    85     gchar version[5];    /* "x.xx\0" */

    87     gint  i_width;

    88     gint  i_height;

    89     gint  i_width_desired;

    90     gint  i_height_desired;

    92     gchar i_mode;            /* P progressive, I interlaced */

    94     gdouble  d_aspect;       /* 1.0 squared pixel */

    95     gdouble  d_fps;

    96     //fps num/denom

    97     gint     i_fpsn;

    98     gint     i_fpsd;

   100     gint     i_video_blocks; /* 0 no video, -1 unknown */

   101     gint     i_audio_blocks;

   102     gint     i_text_blocks;

   104     gint     i_keyframe_distance;

   106 } nuv_header;

   108 /* frame header */

   109 typedef struct

   110 {

   111     gchar i_type;        /* A: audio, V: video, S: sync; T: test

   112                            R: Seekpoint (string:RTjjjjjjjj)

   113                            D: Extra data for codec */

   114     gchar i_compression; /* V: 0 uncompressed

   115                               1 RTJpeg

   116                               2 RTJpeg+lzo

   117                               N black frame

   118                               L copy last

   119                            A: 0 uncompressed (44100 1-bits, 2ch)

   120                               1 lzo

   121                               2 layer 2

   122                               3 layer 3

   123                               F flac

   124                               S shorten

   125                               N null frame loudless

   126                               L copy last

   127                             S: B audio and vdeo sync point

   128                                A audio sync info (timecode == effective

   129                                     dsp frequency*100)

   130                                V next video sync (timecode == next video

   131                                     frame num)

   132                                S audio,video,text correlation */

   133     gchar i_keyframe;    /* 0 keyframe, else no no key frame */

   134     guint8 i_filters;  /* 0x01: gauss 5 pixel (8,2,2,2,2)/16

   135                            0x02: gauss 5 pixel (8,1,1,1,1)/12

   136                            0x04: cartoon filter */

   138     gint32 i_timecode;     /* ms */

   140     gint i_length;       /* V,A,T: length of following data

   141                            S: length of packet correl */

   142 } nuv_frame_header;

   144 /* FIXME Not sure of this one */

   145 typedef struct

   146 {

   147     gint             i_version;

   148     guint32		     i_video_fcc;

   150     guint32		     i_audio_fcc;

   151     gint             i_audio_sample_rate;

   152     gint             i_audio_bits_per_sample;

   153     gint             i_audio_channels;

   154     gint             i_audio_compression_ratio;

   155     gint             i_audio_quality;

   156     gint             i_rtjpeg_quality;

   157     gint             i_rtjpeg_luma_filter;

   158     gint             i_rtjpeg_chroma_filter;

   159     gint             i_lavc_bitrate;

   160     gint             i_lavc_qmin;

   161     gint             i_lavc_qmax;

   162     gint             i_lavc_maxqdiff;

   163     gint64         	 i_seekable_offset;

   164     gint64           i_keyframe_adjust_offset;

   166 } nuv_extended_header;

   168 typedef enum {

   169   GST_NUV_DEMUX_START,

   170   GST_NUV_DEMUX_HEADER_DATA,

   171   GST_NUV_DEMUX_EXTRA_DATA,

   172   GST_NUV_DEMUX_MPEG_DATA,

   173   GST_NUV_DEMUX_EXTEND_HEADER,

   174   GST_NUV_DEMUX_EXTEND_HEADER_DATA,

   175   GST_NUV_DEMUX_FRAME_HEADER,

   176   GST_NUV_DEMUX_MOVI,

   177   GST_NUV_DEMUX_INVALID_DATA

   178 } GstNuvDemuxState;

   180 struct _GstNuvDemuxPrivate {

   181   /* used for indicate the mode */

   182   guint         mode;

   184   /* used on push mode */

   185   GstAdapter    *adapter;

   187   /* pads */

   188   GstPad        *sinkpad;

   189   GstPad        *src_video_pad;

   190   GstPad        *src_audio_pad;

   192   /* Flow control */

   193   GstFlowReturn last_video_return;

   194   GstFlowReturn last_audio_return;

   196   /* NUV decoding state */

   197   GstNuvDemuxState  state;

   198   GstSegment        segment;

   199   guint64           last_update;

   200   guint64           offset;

   201   guint64           streamer_offset;

   203   /* duration information */

   204   gint64            duration_bytes;

   205   gint64            duration_time;

   206   gint64            duration_average;

   208   /* segment control info */

   209   gboolean          new_audio_segment;

   210   gboolean          new_video_segment;

   212   /* Mpeg ExtraData */

   213   guint64       mpeg_data_size;

   214   GstBuffer     *mpeg_buffer;

   216   /* Headers */

   217   nuv_header *h;

   218   nuv_extended_header *eh;

   219   nuv_frame_header *fh;

   221   /* anothers info */

   222   gint64            time_start;

   223   gint64            time_diff;

   224   gint64            time_qos;

   225   guint64           last_frame_time;

   226 };

   229 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",

   230     GST_PAD_SINK,

   231     GST_PAD_ALWAYS,

   232     GST_STATIC_CAPS ("video/x-nuv"));

   234 static GstStaticPadTemplate audio_src_template =

   235 GST_STATIC_PAD_TEMPLATE ("audio_src",

   236     GST_PAD_SRC,

   237     GST_PAD_SOMETIMES,

   238     GST_STATIC_CAPS_ANY);

   240 static GstStaticPadTemplate video_src_template =

   241 GST_STATIC_PAD_TEMPLATE ("video_src",

   242     GST_PAD_SRC,

   243     GST_PAD_SOMETIMES,

   244     GST_STATIC_CAPS_ANY);

   246 static void gst_nuv_demux_dispose (GObject * object);

   247 static void gst_nuv_demux_finalize (GObject * object);

   248 static GstStateChangeReturn gst_nuv_demux_change_state (GstElement * element,

   249     GstStateChange transition);

   250 static void gst_nuv_demux_loop (GstPad * pad);

   251 static GstFlowReturn gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf);

   252 static GstFlowReturn gst_nuv_demux_play (GstPad * pad);

   253 static gboolean gst_nuv_demux_sink_activate_pull (GstPad * sinkpad,

   254     gboolean active);

   255 static gboolean gst_nuv_demux_sink_activate_push (GstPad * pad,

   256     gboolean active);

   257 static gboolean gst_nuv_demux_sink_activate (GstPad * sinkpad);

   258 static gboolean gst_nuv_demux_sink_event    (GstPad *pad, GstEvent *event);

   259 static GstFlowReturn gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size,

   260     gboolean move, GstBuffer ** buffer);

   261 static void gst_nuv_demux_reset (GstNuvDemux * nuv);

   262 static void gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv);

   263 static void gst_nuv_demux_send_eos (GstNuvDemux * nuv);

   264 static void gst_nuv_demux_update_duration (GstNuvDemux *nuv, guint64 current_timestamp);

   265 static gint64 gst_nuv_demux_get_bytes_duration (GstNuvDemux *nuv);

   266 static gint64 gst_nuv_demux_get_time_duration (GstNuvDemux *nuv);

   269 GST_BOILERPLATE (GstNuvDemux, gst_nuv_demux, GstElement, GST_TYPE_ELEMENT);

   271 /******************************************************************************

   272  * Utils function

   273  ******************************************************************************/

   274 #if G_BYTE_ORDER == G_BIG_ENDIAN

   275 static inline gdouble

   276 _gdouble_swap_le_be (gdouble * d)

   277 {

   278   union

   279   {

   280     guint64 i;

   281     gdouble d;

   282   } u;

   284   u.d = *d;

   285   u.i = GUINT64_SWAP_LE_BE (u.i);

   286   return u.d;

   287 }

   289 #define READ_DOUBLE_FROM_LE(d) (_gdouble_swap_le_be((gdouble* ) d))

   290 #else /* G_BYTE_ORDER != G_BIG_ENDIAN */

   291 #define READ_DOUBLE_FROM_LE(d) *((gdouble* ) (d))

   292 #endif /* G_BYTE_ORDER != G_BIG_ENDIAN */

   294 static void

   295 double2fraction (double in, int *num, int *denom)

   296 {

   297     if (in == 29.97) {

   298         *num = 30000;

   299         *denom = 1001;

   300     } else if (in == 23.976) {

   301         *num = 24000;

   302         *denom = 1001;

   303     } else {

   304         *denom = 1;

   305         while (in - floor(in) >= 0.1) {

   306             *denom *= 10;

   307             in *= 10.0;

   308         }

   309         *num = (int)floor(in);

   310     }

   311 }

   313 /* GObject Functions */

   315 static void

   316 gst_nuv_demux_base_init (gpointer klass)

   317 {

   318   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

   320   gst_element_class_add_pad_template (element_class,

   321       gst_static_pad_template_get (&audio_src_template));

   323   gst_element_class_add_pad_template (element_class,

   324       gst_static_pad_template_get (&video_src_template));

   326   gst_element_class_add_pad_template (element_class,

   327       gst_static_pad_template_get (&sink_template));

   328   gst_element_class_set_details (element_class, &gst_nuv_demux_details);

   329 }

   331 static void

   332 gst_nuv_demux_class_init (GstNuvDemuxClass * klass)

   333 {

   334   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);

   335   GObjectClass *gobject_class = (GObjectClass *) klass;

   337   GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",

   338       0, "Demuxer for NUV streams");

   340   parent_class = g_type_class_peek_parent (klass);

   342   gobject_class->dispose = gst_nuv_demux_dispose;

   343   gobject_class->finalize = gst_nuv_demux_finalize;

   344   gstelement_class->change_state = gst_nuv_demux_change_state;

   346   g_type_class_add_private (gobject_class, sizeof (GstNuvDemuxPrivate));

   347 }

   349 static void

   350 gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)

   351 {

   352   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

   353   nuv->priv->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");

   354   gst_pad_set_activate_function (nuv->priv->sinkpad, gst_nuv_demux_sink_activate);

   355   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   356       gst_nuv_demux_sink_activate_pull);

   357   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   358       gst_nuv_demux_sink_activate_push);

   359   gst_pad_set_chain_function (nuv->priv->sinkpad,

   360       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   361   gst_pad_set_event_function (nuv->priv->sinkpad,

   362       gst_nuv_demux_sink_event);

   363   gst_element_add_pad (GST_ELEMENT (nuv), nuv->priv->sinkpad);

   365   nuv->priv->new_audio_segment = TRUE;

   366   nuv->priv->new_video_segment = TRUE;

   368   /* creating adapter */

   369   nuv->priv->mode = NUV_PUSH_MODE;

   370   nuv->priv->adapter = gst_adapter_new ();

   372   gst_nuv_demux_reset (nuv);

   373 }

   375 static void

   376 gst_nuv_demux_dispose (GObject * object)

   377 {

   378   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

   380   if (nuv->priv->mpeg_buffer != NULL) {

   381     gst_buffer_unref (nuv->priv->mpeg_buffer);

   382   }

   384   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   385   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

   387   if (nuv->priv->adapter != NULL) {

   388     gst_object_unref (nuv->priv->adapter);

   389   }

   390 }

   392 static void

   393 gst_nuv_demux_finalize (GObject * object)

   394 {

   395   G_OBJECT_CLASS (parent_class)->finalize (object);

   396 }

   399 /* HeaderLoad:

   400  */

   401 static GstFlowReturn

   402 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header ** h_ret)

   403 {

   404   GstBuffer *buffer = NULL;

   405   GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 72, TRUE, &buffer);

   407   if ((res != GST_FLOW_OK) || (buffer == NULL))

   408     return res;

   410   nuv_header *h = g_new0 (nuv_header, 1);

   412   memcpy (h->id, buffer->data, 12);

   413   memcpy (h->version, buffer->data + 12, 5);

   414   h->i_width = GST_READ_UINT32_LE (&buffer->data[20]);

   415   h->i_height = GST_READ_UINT32_LE (&buffer->data[24]);

   416   h->i_width_desired = GST_READ_UINT32_LE (&buffer->data[28]);

   417   h->i_height_desired = GST_READ_UINT32_LE (&buffer->data[32]);

   418   h->i_mode = GPOINTER_TO_INT (buffer->data[36]);

   419   h->d_aspect = READ_DOUBLE_FROM_LE (&buffer->data[40]);

   420   h->d_fps = READ_DOUBLE_FROM_LE (&buffer->data[48]);

   421   /* get the num and denom values from fps */

   422   double2fraction (h->d_fps, &h->i_fpsn, &h->i_fpsd);

   423   h->i_video_blocks = GST_READ_UINT32_LE (&buffer->data[56]);

   424   h->i_audio_blocks = GST_READ_UINT32_LE (&buffer->data[60]);

   425   h->i_text_blocks = GST_READ_UINT32_LE (&buffer->data[64]);

   426   h->i_keyframe_distance = GST_READ_UINT32_LE (&buffer->data[68]);

   428   GST_DEBUG_OBJECT (nuv,

   429       "nuv: h=%s v=%s %dx%d a=%f fps=%f v=%d a=%d t=%d kfd=%d", h->id,

   430       h->version, h->i_width, h->i_height, h->d_aspect, h->d_fps,

   431       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   432       h->i_keyframe_distance);

   434   *h_ret = h;

   435   gst_buffer_unref (buffer);

   436   return res;

   437 }

   439 static GstFlowReturn

   440 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   441 {

   442   GstFlowReturn res;

   444   res = gst_nuv_demux_header_load (nuv, &nuv->priv->h);

   445   if (res == GST_FLOW_OK)

   446     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   447   return res;

   448 }

   450 /*

   451  * Read NUV file tag

   452  */

   453 static GstFlowReturn

   454 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   455 {

   456   GstFlowReturn res = GST_FLOW_OK;

   457   GstBuffer *file_header = NULL;

   459   res = gst_nuv_demux_read_bytes (nuv, 12, FALSE, &file_header);

   460   if ((res != GST_FLOW_OK) || (file_header == NULL)) {

   461     return res;

   462   } else {

   463     if (strncmp ((gchar *) file_header->data, "MythTVVideo", 11) ||

   464         strncmp ((gchar *) file_header->data, "NuppelVideo", 11)) {

   465       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   466     } else {

   467       GST_DEBUG_OBJECT (nuv, "error parsing file header");

   468       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   469       res = GST_FLOW_ERROR;

   470     }

   471   }

   473   if (file_header != NULL) {

   474     gst_buffer_unref (file_header);

   475   }

   477   return res;

   478 }

   480 /* FrameHeaderLoad:

   481  */

   482 static GstFlowReturn

   483 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header ** h_ret)

   484 {

   485   unsigned char *data;

   486   nuv_frame_header *h;

   487   GstBuffer *buf = NULL;

   489   GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 12, TRUE, &buf);

   491   if ((res != GST_FLOW_OK) || (buf == NULL)) {

   492     if (buf != NULL) {

   493       gst_buffer_unref (buf);

   494     }

   495     return res;

   496   }

   498   h = g_new0 (nuv_frame_header, 1);

   499   data = buf->data;

   501   h->i_type = GPOINTER_TO_INT (data[0]);

   502   h->i_compression = GPOINTER_TO_INT (data[1]);

   503   h->i_keyframe = GPOINTER_TO_INT (data[2]);

   504   h->i_filters = GPOINTER_TO_INT (data[3]);

   505   h->i_timecode = GST_READ_UINT32_LE (&data[4]);

   506   h->i_length = GST_READ_UINT32_LE (&data[8]);

   508   GST_DEBUG_OBJECT (nuv, "frame hdr: t=%c c=%c k=%d f=0x%x timecode=%d l=%d",

   509       h->i_type,

   510       h->i_compression ? h->i_compression : ' ',

   511       h->i_keyframe ? h->i_keyframe : ' ',

   512       h->i_filters, h->i_timecode, h->i_length);

   514   *h_ret = h;

   515   gst_buffer_unref (buf);

   516   return GST_FLOW_OK;

   517 }

   519 static GstFlowReturn

   520 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   521     nuv_extended_header ** h_ret)

   522 {

   523   unsigned char *data;

   524   GstBuffer *buff = NULL;

   525   nuv_extended_header *h;

   528   GstFlowReturn res = gst_nuv_demux_read_bytes (nuv, 512, TRUE, &buff);

   530   if ((res != GST_FLOW_OK) || (buff == NULL)) {

   531     if (buff != NULL) {

   532       gst_buffer_unref (buff);

   533     }

   534     return res;

   535   }

   537   h = g_new0 (nuv_extended_header, 1);

   538   data = buff->data;

   539   h->i_version = GST_READ_UINT32_LE (&data[0]);

   540   h->i_video_fcc = GST_MAKE_FOURCC (data[4], data[5], data[6], data[7]);

   541   h->i_audio_fcc = GST_MAKE_FOURCC (data[8], data[9], data[10], data[11]);

   542   h->i_audio_sample_rate = GST_READ_UINT32_LE (&data[12]);

   543   h->i_audio_bits_per_sample = GST_READ_UINT32_LE (&data[16]);

   544   h->i_audio_channels = GST_READ_UINT32_LE (&data[20]);

   545   h->i_audio_compression_ratio = GST_READ_UINT32_LE (&data[24]);

   546   h->i_audio_quality = GST_READ_UINT32_LE (&data[28]);

   547   h->i_rtjpeg_quality = GST_READ_UINT32_LE (&data[32]);

   548   h->i_rtjpeg_luma_filter = GST_READ_UINT32_LE (&data[36]);

   549   h->i_rtjpeg_chroma_filter = GST_READ_UINT32_LE (&data[40]);

   550   h->i_lavc_bitrate = GST_READ_UINT32_LE (&data[44]);

   551   h->i_lavc_qmin = GST_READ_UINT32_LE (&data[48]);

   552   h->i_lavc_qmin = GST_READ_UINT32_LE (&data[52]);

   553   h->i_lavc_maxqdiff = GST_READ_UINT32_LE (&data[56]);

   554   h->i_seekable_offset = GST_READ_UINT64_LE (&data[60]);

   555   h->i_keyframe_adjust_offset = GST_READ_UINT64_LE (&data[68]);

   557   GST_DEBUG_OBJECT (nuv,

   558       "ex hdr: v=%d vffc=%4.4s afcc=%4.4s %dHz %dbits ach=%d acr=%d aq=%d"

   559       "rtjpeg q=%d lf=%d lc=%d lavc br=%d qmin=%d qmax=%d maxqdiff=%d seekableoff=%lld keyfao=%lld",

   560       h->i_version, (gchar *) & h->i_video_fcc, (gchar *) & h->i_audio_fcc,

   561       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   562       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   563       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

   564       h->i_lavc_qmin, h->i_lavc_qmax, h->i_lavc_maxqdiff, h->i_seekable_offset,

   565       h->i_keyframe_adjust_offset);

   567   *h_ret = h;

   568   gst_buffer_unref (buff);

   569   return res;

   570 }

   573 /* Query Functions */

   574 static const GstQueryType *

   575 gst_nuv_demux_get_src_query_types (GstPad * pad)

   576 {

   577   static const GstQueryType src_types[] = {

   578     GST_QUERY_POSITION,

   579     GST_QUERY_DURATION,

   580     0

   581   };

   583   return src_types;

   584 }

   586 static gboolean

   587 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   588 {

   589   gboolean res = FALSE;

   590   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

   592   switch (GST_QUERY_TYPE (query)) {

   593     case GST_QUERY_POSITION:

   594       if (GST_CLOCK_TIME_IS_VALID (nuv->priv->last_frame_time)) {

   596         gst_query_set_position (query, GST_FORMAT_TIME, nuv->priv->last_frame_time);

   597         res = TRUE;

   598       }

   599       break;

   600     case GST_QUERY_DURATION:

   601       {

   602         gint64 duration = 0;

   603         duration = gst_nuv_demux_get_time_duration (nuv);

   604         if (duration == GST_CLOCK_TIME_NONE) {

   605             duration = nuv->priv->duration_average;

   606         }

   607         if (duration != GST_CLOCK_TIME_NONE) {

   608             gst_query_set_duration (query, GST_FORMAT_TIME, duration);

   609             res = TRUE;

   610         }

   611       }

   612       break;

   613     default:

   614       res = FALSE;

   615       break;

   616   }

   618   gst_object_unref (nuv);

   620   return res;

   621 }

   623 static GstPad*

   624 gst_nuv_demux_create_pad (GstNuvDemux *nuv, GstCaps *caps, GstStaticPadTemplate *template, const gchar* name)

   625 {

   626     GstPad *pad = NULL;

   627     pad = gst_pad_new_from_static_template (template, name);

   628     gst_pad_set_caps (pad, caps);

   629     gst_pad_set_active (pad, TRUE);

   630     gst_pad_use_fixed_caps (pad);

   631     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   633     return pad;

   634 }

   636 static void

   637 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   638 {

   639   if (nuv->priv->h->i_video_blocks != 0) {

   640     GstCaps *video_caps = NULL;

   642     video_caps = gst_caps_new_simple ("video/x-divx",

   643         "divxversion", G_TYPE_INT, 4,

   644         "width", G_TYPE_INT, nuv->priv->h->i_width,

   645         "height", G_TYPE_INT, nuv->priv->h->i_height,

   646         "framerate", GST_TYPE_FRACTION, nuv->priv->h->i_fpsn, nuv->priv->h->i_fpsd,

   647         "format", GST_TYPE_FOURCC, nuv->priv->eh->i_video_fcc,

   648         "pixel-aspect-ratio", GST_TYPE_FRACTION,

   649         (gint) (nuv->priv->h->d_aspect * 1000.0f), 1000, NULL);

   651     nuv->priv->src_video_pad = gst_nuv_demux_create_pad (nuv, video_caps, &video_src_template, "video_src");

   652     gst_caps_unref (video_caps);

   653   }

   655   if (nuv->priv->h->i_audio_blocks != 0) {

   656     GstCaps *audio_caps = NULL;

   658     audio_caps = gst_caps_new_simple ("audio/mpeg",

   659         "rate", G_TYPE_INT, nuv->priv->eh->i_audio_sample_rate,

   660         "format", GST_TYPE_FOURCC, nuv->priv->eh->i_audio_fcc,

   661         "channels", G_TYPE_INT, nuv->priv->eh->i_audio_channels,

   662         "mpegversion", G_TYPE_INT, nuv->priv->eh->i_version, NULL);

   664     nuv->priv->src_audio_pad = gst_nuv_demux_create_pad (nuv, audio_caps, &audio_src_template, "audio_src");

   665     gst_caps_unref (audio_caps);

   666   }

   668   gst_element_no_more_pads (GST_ELEMENT (nuv));

   669 }

   671 static GstFlowReturn

   672 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   673 {

   674   GstFlowReturn ret = GST_FLOW_OK;

   676   if (nuv->priv->fh != NULL)

   677   {

   678     g_free (nuv->priv->fh);

   679     nuv->priv->fh = NULL;

   680   }

   682   ret = gst_nuv_demux_frame_header_load (nuv, &nuv->priv->fh);

   683   if (ret != GST_FLOW_OK)

   684     return ret;

   686   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   687   return ret;

   688 }

   690 static gboolean

   691 gst_nuv_combine_flow (GstNuvDemux *nuv)

   692 {

   693     GstFlowReturn ret_video = nuv->priv->last_video_return;

   694     GstFlowReturn ret_audio = nuv->priv->last_audio_return;

   696     if ((ret_video != GST_FLOW_OK) &&

   697         (ret_audio != GST_FLOW_OK))

   698         return FALSE;

   700     if (GST_FLOW_IS_FATAL (ret_video))

   701         return FALSE;

   703     if (GST_FLOW_IS_FATAL (ret_audio))

   704         return FALSE;

   706     return TRUE;

   707 }

   709 static GstFlowReturn

   710 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   711 {

   712   GstFlowReturn ret = GST_FLOW_OK;

   713   GstPad *pad = NULL;

   714   guint64 timestamp;

   715   GstBuffer *buf = NULL;

   716   nuv_frame_header *h = NULL;

   718   h = nuv->priv->fh;

   720   if (h->i_type == 'R')

   721     goto done;

   723   if (h->i_length > 0) {

   724 	  ret = gst_nuv_demux_read_bytes (nuv, h->i_length, TRUE, &buf);

   725 	  if ((ret != GST_FLOW_OK) || (buf == NULL))

   726 		  return ret;

   728       if (h->i_timecode < 0) {

   729           h->i_timecode = h->i_timecode * -1;

   730           nuv->priv->time_diff = h->i_timecode;

   731       }

   732       else

   733           h->i_timecode += nuv->priv->time_diff;

   735       timestamp = h->i_timecode * GST_MSECOND;

   737       //GST_BUFFER_SIZE (buf) = h->i_length;

   738       GST_BUFFER_TIMESTAMP (buf) = timestamp;

   739   }

   740   else {

   741     goto done;

   742   }

   745   switch (h->i_type) {

   746     case 'V':

   747     {

   748       pad = nuv->priv->src_video_pad;

   750       if (nuv->priv->new_video_segment) {

   752         /* send new segment event*/

   753         gst_pad_push_event (nuv->priv->src_video_pad,

   754           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   755                                      GST_CLOCK_TIME_NONE, 0));

   757         if (nuv->priv->time_start == GST_CLOCK_TIME_NONE) {

   758             nuv->priv->time_start = timestamp;

   759         }

   760         nuv->priv->new_video_segment = FALSE;

   761       }

   763       break;

   764     }

   765     case 'A':

   766     {

   767       pad = nuv->priv->src_audio_pad;

   769       if (nuv->priv->new_audio_segment) {

   770         /* send new segment event*/

   771         gst_pad_push_event (nuv->priv->src_audio_pad,

   772           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   773                                      GST_CLOCK_TIME_NONE, 0));

   775         if (nuv->priv->time_start == GST_CLOCK_TIME_NONE) {

   776             nuv->priv->time_start = timestamp;

   777         }

   778         nuv->priv->new_audio_segment = FALSE;

   779       }

   781       break;

   782     }

   783     case 'S':

   784     {

   785       switch (h->i_compression) {

   786         case 'V':

   787           GST_DEBUG_OBJECT (nuv, "sending new video segment: %d", h->i_timecode);

   788           gst_pad_push_event (nuv->priv->src_video_pad,

   789               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, h->i_timecode * GST_MSECOND,

   790               		GST_CLOCK_TIME_NONE, 0));

   791           break;

   792         case 'A':

   793           GST_DEBUG_OBJECT (nuv, "sending new audio segment: %d", h->i_timecode);

   794           gst_pad_push_event (nuv->priv->src_audio_pad,

   795               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   796               		GST_CLOCK_TIME_NONE, 0));

   797           break;

   798         default:

   799           break;

   800       }

   801       if (buf != NULL) {

   802         gst_buffer_unref (buf);

   803         buf = NULL;

   804       }

   806       goto done;

   807     }

   808     default:

   809       if (buf != NULL) {

   810         gst_buffer_unref (buf);

   811         buf = NULL;

   812       }

   813       break;

   814   }

   816   if ((buf != NULL) && (pad != NULL)) {

   817       /* update average time */

   818       nuv->priv->streamer_offset += h->i_length;

   819       gst_segment_set_last_stop (&nuv->priv->segment, GST_FORMAT_TIME, timestamp);

   820       gst_nuv_demux_update_duration (nuv, timestamp);

   822       /* pushing the buffer */

   823       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   824       ret = gst_pad_push (pad, buf);

   826       if (ret != GST_FLOW_OK) {

   827         GST_WARNING_OBJECT (nuv, "error: %d pushing on srcpad %s", ret, gst_pad_get_name (pad));

   829         if (pad == nuv->priv->src_video_pad) {

   830             nuv->priv->last_video_return = ret;

   831         }

   832         else if (pad == nuv->priv->src_audio_pad) {

   833             nuv->priv->last_audio_return = ret;

   834         }

   836         /* verify anothers flow if is necessary stop task */

   837         if (gst_nuv_combine_flow (nuv) != FALSE) {

   838             ret = GST_FLOW_OK;

   839         }

   841         //GST_WARNING_OBJECT (nuv, "error: %d pushing on srcpad %s", ret, gst_pad_get_name (pad));

   842       }

   843   } else if (buf != NULL) {

   844       gst_buffer_unref (buf);

   845       buf = NULL;

   846   }

   848 done:

   849   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

   850   g_free (nuv->priv->fh);

   851   nuv->priv->fh = NULL;

   852   return ret;

   853 }

   855 static GstFlowReturn

   856 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   857 {

   858   GstFlowReturn ret = GST_FLOW_OK;

   860   /* ffmpeg extra data */

   861   ret = gst_nuv_demux_read_bytes (nuv, nuv->priv->mpeg_data_size, TRUE,

   862       &nuv->priv->mpeg_buffer);

   863   if ((ret != GST_FLOW_OK) || (nuv->priv->mpeg_buffer == NULL)) {

   864     return ret;

   865   }

   867   GST_BUFFER_SIZE (nuv->priv->mpeg_buffer) = nuv->priv->mpeg_data_size;

   868   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   869   return ret;

   870 }

   872 static GstFlowReturn

   873 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   874 {

   875   GstFlowReturn ret = GST_FLOW_OK;

   877   /* Load 'D' */

   878   nuv_frame_header *h;

   880   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   881   if (ret != GST_FLOW_OK)

   882     return ret;

   884   if (h->i_type != 'D') {

   885     g_free (h);

   886     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   887     return GST_FLOW_NOT_SUPPORTED;

   888   }

   890   if (h->i_length > 0) {

   891     if (h->i_compression == 'F') {

   892       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   893     } else {

   894       g_free (h);

   895       GST_WARNING_OBJECT (nuv, "only file with extended chunk are supported");

   896       return GST_FLOW_NOT_SUPPORTED;

   897     }

   898   } else {

   899     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   900   }

   902   g_free (h);

   903   h = NULL;

   904   return ret;

   905 }

   907 static GstFlowReturn

   908 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   909 {

   910   GstFlowReturn ret = GST_FLOW_OK;

   912   ret = gst_nuv_demux_extended_header_load (nuv, &nuv->priv->eh);

   913   if (ret != GST_FLOW_OK)

   914     return ret;

   916   gst_nuv_demux_create_pads (nuv);

   917   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

   918   return ret;

   919 }

   921 static GstFlowReturn

   922 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   923 {

   924   GstBuffer *buf = NULL;

   925   GstFlowReturn res = GST_FLOW_OK;

   927   res = gst_nuv_demux_read_bytes (nuv, 1, FALSE, &buf);

   928   if ((res != GST_FLOW_OK) || (buf == NULL)) {

   929     if (buf != NULL) {

   930       gst_buffer_unref (buf);

   931     }

   932     return res;

   933   }

   935   if (buf->data[0] == 'X') {

   936     gst_buffer_unref (buf);

   937     buf = NULL;

   938     nuv_frame_header *h = NULL;

   940     res = gst_nuv_demux_frame_header_load (nuv, &h);

   941     if (res != GST_FLOW_OK)

   942       return res;

   944     if (h->i_length != 512) {

   945       g_free (h);

   946       return GST_FLOW_ERROR;

   947     }

   948     g_free (h);

   949     h = NULL;

   950     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

   951   } else {

   952     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   953     g_object_unref (buf);

   954     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

   955         (_("incomplete NUV support")), ("incomplete NUV support"));

   956     return GST_FLOW_ERROR;

   957   }

   958   return res;

   959 }

   961 static GstFlowReturn

   962 gst_nuv_demux_play (GstPad * pad)

   963 {

   964   GstFlowReturn res = GST_FLOW_OK;

   965   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

   967   switch (nuv->priv->state) {

   968     case GST_NUV_DEMUX_START:

   969       res = gst_nuv_demux_stream_file_header (nuv);

   970       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

   971         goto pause;

   972       }

   973       break;

   975     case GST_NUV_DEMUX_HEADER_DATA:

   976       res = gst_nuv_demux_stream_header_data (nuv);

   977       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

   978         goto pause;

   979       }

   980       break;

   982     case GST_NUV_DEMUX_EXTRA_DATA:

   983       res = gst_nuv_demux_stream_extra_data (nuv);

   984       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

   985         goto pause;

   986       }

   987       break;

   989     case GST_NUV_DEMUX_MPEG_DATA:

   990       res = gst_nuv_demux_stream_mpeg_data (nuv);

   991       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

   992         goto pause;

   993       }

   994       break;

   996     case GST_NUV_DEMUX_EXTEND_HEADER:

   997       res = gst_nuv_demux_stream_extend_header (nuv);

   998       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

   999         goto pause;

  1000       }

  1001       break;

  1003     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1004       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1005       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1006         goto pause;

  1007       }

  1008       break;

  1010     case GST_NUV_DEMUX_FRAME_HEADER:

  1011       res = gst_nuv_demux_read_head_frame (nuv);

  1012       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1013         goto pause;

  1014       }

  1015       break;

  1017     case GST_NUV_DEMUX_MOVI:

  1018       res = gst_nuv_demux_stream_data (nuv);

  1019       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1020         goto pause;

  1021       }

  1022       break;

  1024     case GST_NUV_DEMUX_INVALID_DATA:

  1025       goto pause;

  1026       break;

  1027     default:

  1028       g_assert_not_reached ();

  1029   }

  1031   GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->priv->state, gst_flow_get_name (res));

  1033   return GST_FLOW_OK;

  1035 pause:

  1036   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1037   gst_pad_pause_task (nuv->priv->sinkpad);

  1038   if (GST_FLOW_IS_FATAL (res)) {

  1039     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1040         (_("Internal data stream error.")),

  1041         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1043     gst_nuv_demux_send_eos (nuv);

  1044   }

  1045   return res;

  1046 }

  1048 static void

  1049 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1050 {

  1051   gst_element_post_message (GST_ELEMENT (nuv),

  1052       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1054   if (nuv->priv->src_video_pad)

  1055     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1056   if (nuv->priv->src_audio_pad)

  1057     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1058 }

  1060 static GstFlowReturn

  1061 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1062     GstBuffer ** buffer)

  1063 {

  1064   GstFlowReturn ret = GST_FLOW_OK;

  1066   if (size == 0) {

  1067     return ret;

  1068   }

  1070   if (nuv->priv->mode == NUV_PULL_MODE) {

  1071     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1072     if (ret == GST_FLOW_OK) {

  1073         if (move) {

  1074 		    nuv->priv->offset += size;

  1075 		}

  1076       /* got eos */

  1077     } else if (ret == GST_FLOW_UNEXPECTED) {

  1078       if (buffer != NULL)

  1079           gst_buffer_unref (buffer);

  1081       gst_nuv_demux_send_eos (nuv);

  1082       return GST_FLOW_WRONG_STATE;

  1083     }

  1084   } else {

  1085     if (gst_adapter_available (nuv->priv->adapter) < size)

  1086       return GST_FLOW_ERROR_NO_DATA;

  1088     if (move) {

  1089       guint8 *data = NULL;

  1090       data = (guint8 *) gst_adapter_take (nuv->priv->adapter, size);

  1091       *buffer = gst_buffer_new ();

  1092       gst_buffer_set_data (*buffer, data, size);

  1093       GST_BUFFER_MALLOCDATA (*buffer) = data;

  1094       GST_BUFFER_DATA (*buffer) = data;

  1095     } else {

  1096       guint8 *data = NULL;

  1097       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1098       *buffer = gst_buffer_new ();

  1099       gst_buffer_set_data (*buffer, data, size);

  1100     }

  1101   }

  1102   return ret;

  1103 }

  1105 static gboolean

  1106 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1107 {

  1108   gboolean res = TRUE;

  1109   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1111   if (gst_pad_check_pull_range (sinkpad)) {

  1112     res = gst_pad_activate_pull (sinkpad, TRUE);

  1113   } else {

  1114     res = gst_pad_activate_push (sinkpad, TRUE);

  1115   }

  1116   g_object_unref (nuv);

  1117   return res;

  1118 }

  1120 static gboolean

  1121 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1122 {

  1123   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1125   if (active) {

  1126     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1127     nuv->priv->mode = NUV_PULL_MODE;

  1128     if (nuv->priv->adapter) {

  1129       gst_adapter_clear (nuv->priv->adapter);

  1130       g_object_unref (nuv->priv->adapter);

  1131       nuv->priv->adapter = NULL;

  1132     }

  1133     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1134   } else {

  1135     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1136     gst_pad_stop_task (sinkpad);

  1137   }

  1138   gst_object_unref (nuv);

  1140   return TRUE;

  1141 }

  1143 static gboolean

  1144 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1145 {

  1146   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1149   if (active) {

  1150     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1151   } else {

  1152     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1153   }

  1155   gst_object_unref (nuv);

  1157   return TRUE;

  1158 }

  1161 static gboolean

  1162 gst_nuv_demux_sink_event (GstPad *pad, GstEvent *event)

  1163 {

  1164   gboolean res;

  1165   GstNuvDemux *nuv;

  1167   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1169   switch (GST_EVENT_TYPE (event)) {

  1170     case GST_EVENT_SEEK:

  1171     {

  1172       gdouble rate;

  1173       GstFormat format;

  1174       GstSeekFlags flags;

  1175       GstSeekType cur_type;

  1176       gint64 cur;

  1177       GstSeekType stop_type;

  1178       gint64 stop;

  1180       gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop);

  1182       GST_DEBUG_OBJECT (nuv, "got seek, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, cur, stop);

  1184       break;

  1185     }

  1186     case GST_EVENT_NEWSEGMENT:

  1187     {

  1188       gint64 start, stop, time;

  1189       gdouble rate, arate;

  1190       GstFormat format;

  1191       gboolean update;

  1193       GST_DEBUG_OBJECT (nuv, "got a new segment event");

  1194       gst_event_parse_new_segment (event, &update, &rate, &format, &start, &stop, &time);

  1196       GST_DEBUG_OBJECT (nuv, "got newsegment, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, start, stop);

  1197       nuv->priv->duration_bytes = stop - start;

  1198       gst_event_unref (event);

  1199       res = TRUE;

  1200       break;

  1201     }

  1202     case GST_EVENT_QOS:

  1203     {

  1204 /*

  1205       gdouble proportion;

  1206       GstClockTimeDiff diff;

  1207       GstClockTime timestamp;

  1209       gst_event_parse_qos (event, &proportion, &diff, &timestamp);

  1210       if (diff > 0)

  1211         nuv->time_qos = timecode + diff;

  1212       else

  1213         nuv->time_qos = -1;

  1214 */

  1216       break;

  1217     }

  1219     case GST_EVENT_EOS:

  1220         g_debug ("EEEEEEEEEEEEEEEEEOOOOOOOOOOOOOOOOOOOOOOSSSSSSSSSS");

  1221     default:

  1222       res = gst_pad_event_default (pad, event);

  1223       break;

  1224   }

  1226   gst_object_unref (nuv);

  1227   return res;

  1228 }

  1230 static GstFlowReturn

  1231 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1232 {

  1233   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1235   GST_DEBUG_OBJECT (nuv, " gst_nuv_demux_chain function");

  1236   gst_adapter_push (nuv->priv->adapter, buf);

  1238   gst_object_unref (nuv);

  1240   return gst_nuv_demux_play (pad);

  1241 }

  1243 static void

  1244 gst_nuv_demux_loop (GstPad * pad)

  1245 {

  1246   gst_nuv_demux_play (pad);

  1247 }

  1249 static void

  1250 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1251 {

  1252   nuv->priv->state = GST_NUV_DEMUX_START;

  1253   nuv->priv->mode = 0;

  1254   nuv->priv->offset = 0;

  1255   nuv->priv->streamer_offset = 0;

  1256   nuv->priv->time_start = 0;

  1257   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1258   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1259   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1260   nuv->priv->duration_average = GST_CLOCK_TIME_NONE;

  1261   gst_segment_init (&nuv->priv->segment, GST_FORMAT_TIME);

  1263   if (nuv->priv->adapter != NULL)

  1264     gst_adapter_clear (nuv->priv->adapter);

  1266   if (nuv->priv->mpeg_buffer != NULL) {

  1267     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1268     nuv->priv->mpeg_buffer = NULL;

  1269   }

  1271   g_free (nuv->priv->h);

  1272   nuv->priv->h = NULL;

  1274   g_free (nuv->priv->eh);

  1275   nuv->priv->eh = NULL;

  1277   g_free (nuv->priv->fh);

  1278   nuv->priv->fh = NULL;

  1279 }

  1281 static void

  1282 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1283 {

  1284   if (nuv->priv->src_video_pad) {

  1285     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1286     nuv->priv->src_video_pad = NULL;

  1287   }

  1289   if (nuv->priv->src_audio_pad) {

  1290     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1291     nuv->priv->src_audio_pad = NULL;

  1292   }

  1293 }

  1295 static GstStateChangeReturn

  1296 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1297 {

  1298   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1300   switch (transition) {

  1301     case GST_STATE_CHANGE_NULL_TO_READY:

  1302       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1303       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1304       break;

  1305     default:

  1306       break;

  1307   }

  1309   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1310   if (ret == GST_STATE_CHANGE_FAILURE) {

  1311     goto done;

  1312   }

  1314   switch (transition) {

  1315     case GST_STATE_CHANGE_READY_TO_NULL:

  1316       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1317       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1318       break;

  1319     default:

  1320       break;

  1321   }

  1323 done:

  1324   return ret;

  1325 }

  1327 static void

  1328 gst_nuv_demux_update_duration (GstNuvDemux *nuv, guint64 current_timestamp)

  1329 {

  1330     guint64 interval = 0;

  1332     if (gst_nuv_demux_get_time_duration (nuv) != GST_CLOCK_TIME_NONE)

  1333         return;

  1335     interval  = current_timestamp - nuv->priv->last_update;

  1337     if (interval > (10 * GST_SECOND)) {

  1338         GstMessage* msg = NULL;

  1339         gint64 average = 0;

  1340         gint64 duration_bytes = gst_nuv_demux_get_bytes_duration (nuv);

  1342         if (duration_bytes == GST_CLOCK_TIME_NONE)

  1343             return;

  1345         if (current_timestamp > 0) {

  1346             interval = gst_util_uint64_scale (1, current_timestamp - nuv->priv->time_start, GST_SECOND);

  1347             if (interval > 0) {

  1348                 average = gst_util_uint64_scale (1 , nuv->priv->streamer_offset, interval);

  1349             }

  1350             if (average > 0) {

  1351                 nuv->priv->duration_average = gst_util_uint64_scale (GST_SECOND, duration_bytes, average);

  1352             }

  1353             nuv->priv->last_update = current_timestamp;

  1354             msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_average);

  1355             gst_element_post_message (GST_ELEMENT (nuv), msg);

  1356             GST_DEBUG_OBJECT (nuv, "New Duration Average %"G_GUINT64_FORMAT, nuv->priv->duration_average);

  1357         }

  1358     }

  1359 }

  1361 static gint64

  1362 gst_nuv_demux_get_bytes_duration (GstNuvDemux *nuv)

  1363 {

  1364     if (nuv->priv->duration_bytes == GST_CLOCK_TIME_NONE) {

  1365         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1366         GstQuery *query = gst_query_new_duration (GST_FORMAT_BYTES);

  1367         if (gst_pad_query (peer, query)) {

  1368             gint64 duration;

  1370             gst_query_parse_duration (query, NULL, &duration);

  1371             nuv->priv->duration_bytes = duration;

  1372         }

  1373         gst_object_unref (peer);

  1374         gst_query_unref (query);

  1375     }

  1376     return nuv->priv->duration_bytes;

  1377 }

  1379 static gint64

  1380 gst_nuv_demux_get_time_duration (GstNuvDemux *nuv)

  1381 {

  1382     if (nuv->priv->duration_time == GST_CLOCK_TIME_NONE) {

  1383         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1384         GstQuery *query = gst_query_new_duration (GST_FORMAT_TIME);

  1385         if (gst_pad_query (peer, query)) {

  1386             gint64 duration;

  1387             gst_query_parse_duration (query, NULL, &duration);

  1388             nuv->priv->duration_time = duration;

  1389         }

  1390         gst_object_unref (peer);

  1391         gst_query_unref (query);

  1392     }

  1393     return nuv->priv->duration_time;

  1394 }

  1397 static gboolean

  1398 plugin_init (GstPlugin * plugin)

  1399 {

  1400 #ifdef ENABLE_NLS

  1401   setlocale (LC_ALL, "");

  1402   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1403 #endif /* ENABLE_NLS */

  1405   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1406           GST_TYPE_NUV_DEMUX)) {

  1407     return FALSE;

  1408   }

  1409   return TRUE;

  1410 }

  1412 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1413     GST_VERSION_MINOR,

  1414     "nuvdemux",

  1415     "Demuxes and muxes audio and video",

  1416      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	renatofilho
	Fri Dec 01 16:08:34 2006 +0000 (2006-12-01)
branch	trunk
changeset 167	fbe02bb1f3f9
parent 165	9726f9ebd4cb
child 168	b8960c4f7b4d
permissions	-rw-r--r--