gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@d9628018e9f7

     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);

   268 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

   269 GstBuffer * gst_nuv_demux_adapter_take_buffer (GstAdapter * adapter, guint nbytes);

   270 #endif

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

   275 /******************************************************************************

   276  * Utils function

   277  ******************************************************************************/

   278 #if G_BYTE_ORDER == G_BIG_ENDIAN

   279 static inline gdouble

   280 _gdouble_swap_le_be (gdouble * d)

   281 {

   282   union

   283   {

   284     guint64 i;

   285     gdouble d;

   286   } u;

   288   u.d = *d;

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

   290   return u.d;

   291 }

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

   294 #else /* G_BYTE_ORDER != G_BIG_ENDIAN */

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

   296 #endif /* G_BYTE_ORDER != G_BIG_ENDIAN */

   298 static void

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

   300 {

   301     if (in == 29.97) {

   302         *num = 30000;

   303         *denom = 1001;

   304     } else if (in == 23.976) {

   305         *num = 24000;

   306         *denom = 1001;

   307     } else {

   308         *denom = 1;

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

   310             *denom *= 10;

   311             in *= 10.0;

   312         }

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

   314     }

   315 }

   317 /* GObject Functions */

   319 static void

   320 gst_nuv_demux_base_init (gpointer klass)

   321 {

   322   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

   324   gst_element_class_add_pad_template (element_class,

   325       gst_static_pad_template_get (&audio_src_template));

   327   gst_element_class_add_pad_template (element_class,

   328       gst_static_pad_template_get (&video_src_template));

   330   gst_element_class_add_pad_template (element_class,

   331       gst_static_pad_template_get (&sink_template));

   332   gst_element_class_set_details (element_class, &gst_nuv_demux_details);

   334   g_debug ("GST VER: %d.%d", GST_VERSION_MINOR, GST_VERSION_MAJOR);

   335 }

   337 static void

   338 gst_nuv_demux_class_init (GstNuvDemuxClass * klass)

   339 {

   340   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);

   341   GObjectClass *gobject_class = (GObjectClass *) klass;

   343   GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",

   344       0, "Demuxer for NUV streams");

   346   parent_class = g_type_class_peek_parent (klass);

   348   gobject_class->dispose = gst_nuv_demux_dispose;

   349   gobject_class->finalize = gst_nuv_demux_finalize;

   350   gstelement_class->change_state = gst_nuv_demux_change_state;

   352   g_type_class_add_private (gobject_class, sizeof (GstNuvDemuxPrivate));

   353 }

   355 static void

   356 gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)

   357 {

   358   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

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

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

   361   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   362       gst_nuv_demux_sink_activate_pull);

   363   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   364       gst_nuv_demux_sink_activate_push);

   365   gst_pad_set_chain_function (nuv->priv->sinkpad,

   366       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   367   gst_pad_set_event_function (nuv->priv->sinkpad,

   368       gst_nuv_demux_sink_event);

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

   371   nuv->priv->new_audio_segment = TRUE;

   372   nuv->priv->new_video_segment = TRUE;

   374   /* creating adapter */

   375   nuv->priv->mode = NUV_PUSH_MODE;

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

   378   gst_nuv_demux_reset (nuv);

   379 }

   381 static void

   382 gst_nuv_demux_dispose (GObject * object)

   383 {

   384   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

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

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

   388   }

   390   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   391   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   395   }

   396 }

   398 static void

   399 gst_nuv_demux_finalize (GObject * object)

   400 {

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

   402 }

   405 /* HeaderLoad:

   406  */

   407 static GstFlowReturn

   408 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header *h)

   409 {

   410   GstBuffer *buffer = NULL;

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

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

   414     return res;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   432   GST_DEBUG_OBJECT (nuv,

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

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

   435       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   436       h->i_keyframe_distance);

   438   gst_buffer_unref (buffer);

   439   return res;

   440 }

   442 static GstFlowReturn

   443 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   444 {

   445   GstFlowReturn res;

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

   448   if (res == GST_FLOW_OK)

   449     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   450   return res;

   451 }

   453 /*

   454  * Read NUV file tag

   455  */

   456 static GstFlowReturn

   457 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   458 {

   459   GstFlowReturn res = GST_FLOW_OK;

   460   GstBuffer *file_header = NULL;

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

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

   464     return res;

   465   } else {

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

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

   468       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   469     } else {

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

   471       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   472       res = GST_FLOW_ERROR;

   473     }

   474   }

   476   if (file_header != NULL) {

   477     gst_buffer_unref (file_header);

   478   }

   480   return res;

   481 }

   483 /* FrameHeaderLoad:

   484  */

   485 static GstFlowReturn

   486 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header *h)

   487 {

   488   unsigned char *data;

   489   GstBuffer *buf = NULL;

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

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

   494     if (buf != NULL) {

   495       gst_buffer_unref (buf);

   496       buf = NULL;

   497     }

   498     return res;

   499   }

   501   data = buf->data;

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

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

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

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

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

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

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

   511       h->i_type,

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

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

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

   516   gst_buffer_unref (buf);

   517   buf = NULL;

   518   return GST_FLOW_OK;

   519 }

   521 static GstFlowReturn

   522 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   523     nuv_extended_header * h)

   524 {

   525   unsigned char *data;

   526   GstBuffer *buff = NULL;

   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   data = buff->data;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   556   GST_DEBUG_OBJECT (nuv,

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

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

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

   560       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   561       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   562       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

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

   564       h->i_keyframe_adjust_offset);

   566   gst_buffer_unref (buff);

   567   return res;

   568 }

   571 /* Query Functions */

   572 static const GstQueryType *

   573 gst_nuv_demux_get_src_query_types (GstPad * pad)

   574 {

   575   static const GstQueryType src_types[] = {

   576     GST_QUERY_POSITION,

   577     GST_QUERY_DURATION,

   578     0

   579   };

   581   return src_types;

   582 }

   584 static gboolean

   585 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   586 {

   587   gboolean res = FALSE;

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

   590   switch (GST_QUERY_TYPE (query)) {

   591     case GST_QUERY_POSITION:

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

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

   595         res = TRUE;

   596       }

   597       break;

   598     case GST_QUERY_DURATION:

   599       {

   600         gint64 duration = 0;

   601         duration = gst_nuv_demux_get_time_duration (nuv);

   602         if (duration == GST_CLOCK_TIME_NONE) {

   603             duration = nuv->priv->duration_average;

   604         }

   605         if (duration != GST_CLOCK_TIME_NONE) {

   606             gst_query_set_duration (query, GST_FORMAT_TIME, duration);

   607             res = TRUE;

   608         }

   609       }

   610       break;

   611     default:

   612       res = FALSE;

   613       break;

   614   }

   616   gst_object_unref (nuv);

   618   return res;

   619 }

   621 static GstPad*

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

   623 {

   624     GstPad *pad = NULL;

   625     pad = gst_pad_new_from_static_template (template, name);

   626     gst_pad_set_caps (pad, caps);

   627     gst_pad_set_active (pad, TRUE);

   628     gst_pad_use_fixed_caps (pad);

   629     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   631     return pad;

   632 }

   634 static void

   635 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   636 {

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

   638     GstCaps *video_caps = NULL;

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

   641         "divxversion", G_TYPE_INT, 4,

   642         "width", G_TYPE_INT, nuv->priv->h.i_width,

   643         "height", G_TYPE_INT, nuv->priv->h.i_height,

   644         "framerate", GST_TYPE_FRACTION, nuv->priv->h.i_fpsn, nuv->priv->h.i_fpsd,

   645         "format", GST_TYPE_FOURCC, nuv->priv->eh.i_video_fcc,

   646         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   650     gst_caps_unref (video_caps);

   651   }

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

   654     GstCaps *audio_caps = NULL;

   656     audio_caps = gst_caps_new_simple ("audio/mpeg",

   657         "rate", G_TYPE_INT, nuv->priv->eh.i_audio_sample_rate,

   658         "format", GST_TYPE_FOURCC, nuv->priv->eh.i_audio_fcc,

   659         "channels", G_TYPE_INT, nuv->priv->eh.i_audio_channels,

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

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

   663     gst_caps_unref (audio_caps);

   664   }

   666   gst_element_no_more_pads (GST_ELEMENT (nuv));

   667 }

   669 static GstFlowReturn

   670 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   671 {

   672   GstFlowReturn ret = GST_FLOW_OK;

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

   675   if (ret != GST_FLOW_OK)

   676     return ret;

   678   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   679   return ret;

   680 }

   682 static gboolean

   683 gst_nuv_combine_flow (GstNuvDemux *nuv)

   684 {

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

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

   688     if ((ret_video != GST_FLOW_OK) &&

   689         (ret_audio != GST_FLOW_OK))

   690         return FALSE;

   692     if (GST_FLOW_IS_FATAL (ret_video))

   693         return FALSE;

   695     if (GST_FLOW_IS_FATAL (ret_audio))

   696         return FALSE;

   698     return TRUE;

   699 }

   701 static GstFlowReturn

   702 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   703 {

   704   GstFlowReturn ret = GST_FLOW_OK;

   705   GstPad *pad = NULL;

   706   guint64 timestamp;

   707   GstBuffer *buf = NULL;

   708   nuv_frame_header h;

   710   h = nuv->priv->fh;

   712   if (h.i_type == 'R')

   713     goto done;

   715   if (h.i_length > 0) {

   716 	  ret = gst_nuv_demux_read_bytes (nuv, h.i_length, TRUE, &buf);

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

   718 		  return ret;

   720       if (h.i_timecode < 0) {

   721           h.i_timecode = h.i_timecode * -1;

   722           nuv->priv->time_diff = h.i_timecode;

   723       }

   724       else

   725           h.i_timecode += nuv->priv->time_diff;

   727       timestamp = h.i_timecode * GST_MSECOND;

   728       GST_BUFFER_TIMESTAMP (buf) = timestamp;

   729   }

   730   else {

   731     goto done;

   732   }

   735   switch (h.i_type) {

   736     case 'V':

   737     {

   738       pad = nuv->priv->src_video_pad;

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

   742         /* send new segment event*/

   743         gst_pad_push_event (nuv->priv->src_video_pad,

   744           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   745                                      GST_CLOCK_TIME_NONE, 0));

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

   748             nuv->priv->time_start = timestamp;

   749         }

   750         nuv->priv->new_video_segment = FALSE;

   751       }

   753       break;

   754     }

   755     case 'A':

   756     {

   757       pad = nuv->priv->src_audio_pad;

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

   760         /* send new segment event*/

   761         gst_pad_push_event (nuv->priv->src_audio_pad,

   762           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   763                                      GST_CLOCK_TIME_NONE, 0));

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

   766             nuv->priv->time_start = timestamp;

   767         }

   768         nuv->priv->new_audio_segment = FALSE;

   769       }

   771       break;

   772     }

   773     case 'S':

   774     {

   775       switch (h.i_compression) {

   776         case 'V':

   777           GST_DEBUG_OBJECT (nuv, "sending new video segment: %d", h.i_timecode);

   778           gst_pad_push_event (nuv->priv->src_video_pad,

   779               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, h.i_timecode * GST_MSECOND,

   780               		GST_CLOCK_TIME_NONE, 0));

   781           break;

   782         case 'A':

   783           GST_DEBUG_OBJECT (nuv, "sending new audio segment: %d", h.i_timecode);

   784           gst_pad_push_event (nuv->priv->src_audio_pad,

   785               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   786               		GST_CLOCK_TIME_NONE, 0));

   787           break;

   788         default:

   789           break;

   790       }

   791       goto done;

   792     }

   793     default:

   794       break;

   795   }

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

   798       /* update average time */

   799       nuv->priv->streamer_offset += h.i_length;

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

   801       gst_nuv_demux_update_duration (nuv, timestamp);

   803       /* pushing the buffer */

   804       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   805       ret = gst_pad_push (pad, buf);

   806       buf = NULL;

   808       if (ret != GST_FLOW_OK) {

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

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

   812             nuv->priv->last_video_return = ret;

   813         }

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

   815             nuv->priv->last_audio_return = ret;

   816         }

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

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

   820             ret = GST_FLOW_OK;

   821         }

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

   824       }

   825   }

   827 done:

   828   if (buf != NULL) {

   829       g_free (buf->data);

   830       gst_buffer_unref (buf);

   831       buf = NULL;

   832   }

   833   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

   834   memset (&nuv->priv->fh, 0, sizeof (nuv->priv->fh));

   835   return ret;

   836 }

   838 static GstFlowReturn

   839 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   840 {

   841   GstFlowReturn ret = GST_FLOW_OK;

   843   /* ffmpeg extra data */

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

   845       &nuv->priv->mpeg_buffer);

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

   847     return ret;

   848   }

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

   851   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   852   return ret;

   853 }

   855 static GstFlowReturn

   856 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   857 {

   858   GstFlowReturn ret = GST_FLOW_OK;

   860   /* Load 'D' */

   861   nuv_frame_header h;

   863   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   864   if (ret != GST_FLOW_OK)

   865     return ret;

   867   if (h.i_type != 'D') {

   868     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   869     return GST_FLOW_NOT_SUPPORTED;

   870   }

   872   if (h.i_length > 0) {

   873     if (h.i_compression == 'F') {

   874       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   875     } else {

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

   877       return GST_FLOW_NOT_SUPPORTED;

   878     }

   879   } else {

   880     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   881   }

   883   return ret;

   884 }

   886 static GstFlowReturn

   887 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   888 {

   889   GstFlowReturn ret = GST_FLOW_OK;

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

   892   if (ret != GST_FLOW_OK)

   893     return ret;

   895   gst_nuv_demux_create_pads (nuv);

   896   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

   897   return ret;

   898 }

   900 static GstFlowReturn

   901 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   902 {

   903   GstBuffer *buf = NULL;

   904   GstFlowReturn res = GST_FLOW_OK;

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

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

   908     if (buf != NULL) {

   909       gst_buffer_unref (buf);

   910     }

   911     return res;

   912   }

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

   915     gst_buffer_unref (buf);

   916     buf = NULL;

   917     nuv_frame_header h;

   919     res = gst_nuv_demux_frame_header_load (nuv, &h);

   920     if (res != GST_FLOW_OK)

   921       return res;

   923     if (h.i_length != 512) {

   924       return GST_FLOW_ERROR;

   925     }

   926     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

   927   } else {

   928     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   929     g_object_unref (buf);

   930     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

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

   932     return GST_FLOW_ERROR;

   933   }

   934   return res;

   935 }

   937 static GstFlowReturn

   938 gst_nuv_demux_play (GstPad * pad)

   939 {

   940   GstFlowReturn res = GST_FLOW_OK;

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

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

   944     case GST_NUV_DEMUX_START:

   945       res = gst_nuv_demux_stream_file_header (nuv);

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

   947         goto pause;

   948       }

   949       break;

   951     case GST_NUV_DEMUX_HEADER_DATA:

   952       res = gst_nuv_demux_stream_header_data (nuv);

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

   954         goto pause;

   955       }

   956       break;

   958     case GST_NUV_DEMUX_EXTRA_DATA:

   959       res = gst_nuv_demux_stream_extra_data (nuv);

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

   961         goto pause;

   962       }

   963       break;

   965     case GST_NUV_DEMUX_MPEG_DATA:

   966       res = gst_nuv_demux_stream_mpeg_data (nuv);

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

   968         goto pause;

   969       }

   970       break;

   972     case GST_NUV_DEMUX_EXTEND_HEADER:

   973       res = gst_nuv_demux_stream_extend_header (nuv);

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

   975         goto pause;

   976       }

   977       break;

   979     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

   980       res = gst_nuv_demux_stream_extend_header_data (nuv);

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

   982         goto pause;

   983       }

   984       break;

   986     case GST_NUV_DEMUX_FRAME_HEADER:

   987       res = gst_nuv_demux_read_head_frame (nuv);

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

   989         goto pause;

   990       }

   991       break;

   993     case GST_NUV_DEMUX_MOVI:

   994       res = gst_nuv_demux_stream_data (nuv);

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

   996         goto pause;

   997       }

   998       break;

  1000     case GST_NUV_DEMUX_INVALID_DATA:

  1001       goto pause;

  1002       break;

  1003     default:

  1004       g_assert_not_reached ();

  1005   }

  1007   GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->priv->state, gst_flow_get_name (res));

  1009   return GST_FLOW_OK;

  1011 pause:

  1012   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1013   gst_pad_pause_task (nuv->priv->sinkpad);

  1014   if (GST_FLOW_IS_FATAL (res)) {

  1015     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1016         (_("Internal data stream error.")),

  1017         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1019     gst_nuv_demux_send_eos (nuv);

  1020   }

  1021   return res;

  1022 }

  1024 static void

  1025 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1026 {

  1027   gst_element_post_message (GST_ELEMENT (nuv),

  1028       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1030   if (nuv->priv->src_video_pad)

  1031     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1032   if (nuv->priv->src_audio_pad)

  1033     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1034 }

  1036 static GstFlowReturn

  1037 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1038     GstBuffer ** buffer)

  1039 {

  1040   GstFlowReturn ret = GST_FLOW_OK;

  1042   if (size == 0) {

  1043     return ret;

  1044   }

  1046   if (nuv->priv->mode == NUV_PULL_MODE) {

  1047     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1048     if (ret == GST_FLOW_OK) {

  1049         if (move) {

  1050 		    nuv->priv->offset += size;

  1051 		}

  1052       /* got eos */

  1053     } else if (ret == GST_FLOW_UNEXPECTED) {

  1054       if (buffer != NULL)

  1055           gst_buffer_unref (buffer);

  1057       gst_nuv_demux_send_eos (nuv);

  1058       return GST_FLOW_WRONG_STATE;

  1059     }

  1060   } else {

  1061     if (gst_adapter_available (nuv->priv->adapter) < size)

  1062       return GST_FLOW_ERROR_NO_DATA;

  1064     if (move) {

  1065       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1066     } else {

  1067       guint8 *data = NULL;

  1068       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1069       *buffer = gst_buffer_new ();

  1070       gst_buffer_set_data (*buffer, data, size);

  1071     }

  1072   }

  1073   return ret;

  1074 }

  1076 static gboolean

  1077 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1078 {

  1079   gboolean res = TRUE;

  1080   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1082   if (gst_pad_check_pull_range (sinkpad)) {

  1083     res = gst_pad_activate_pull (sinkpad, TRUE);

  1084   } else {

  1085     res = gst_pad_activate_push (sinkpad, TRUE);

  1086   }

  1088   g_object_unref (nuv);

  1089   return res;

  1090 }

  1092 static gboolean

  1093 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1094 {

  1095   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1097   if (active) {

  1098     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1099     nuv->priv->mode = NUV_PULL_MODE;

  1100     if (nuv->priv->adapter) {

  1101       gst_adapter_clear (nuv->priv->adapter);

  1102       g_object_unref (nuv->priv->adapter);

  1103       nuv->priv->adapter = NULL;

  1104     }

  1105     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1106   } else {

  1107     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1108     gst_pad_stop_task (sinkpad);

  1109   }

  1110   gst_object_unref (nuv);

  1112   return TRUE;

  1113 }

  1115 static gboolean

  1116 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1117 {

  1118   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1121   if (active) {

  1122     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1123   } else {

  1124     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1125   }

  1127   gst_object_unref (nuv);

  1129   return TRUE;

  1130 }

  1133 static gboolean

  1134 gst_nuv_demux_sink_event (GstPad *pad, GstEvent *event)

  1135 {

  1136   gboolean res;

  1137   GstNuvDemux *nuv;

  1139   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1141   switch (GST_EVENT_TYPE (event)) {

  1142     case GST_EVENT_SEEK:

  1143     {

  1144       gdouble rate;

  1145       GstFormat format;

  1146       GstSeekFlags flags;

  1147       GstSeekType cur_type;

  1148       gint64 cur;

  1149       GstSeekType stop_type;

  1150       gint64 stop;

  1152       gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop);

  1153       GST_DEBUG_OBJECT (nuv, "got seek, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, cur, stop);

  1154       break;

  1155     }

  1156     case GST_EVENT_NEWSEGMENT:

  1157     {

  1158       gint64 start, stop, time;

  1159       gdouble rate, arate;

  1160       GstFormat format;

  1161       gboolean update;

  1163       GST_DEBUG_OBJECT (nuv, "got a new segment event");

  1164       gst_event_parse_new_segment (event, &update, &rate, &format, &start, &stop, &time);

  1166       GST_DEBUG_OBJECT (nuv, "got newsegment, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, start, stop);

  1167       nuv->priv->duration_bytes = stop - start;

  1168       gst_event_unref (event);

  1169       res = TRUE;

  1170       break;

  1171     }

  1172     case GST_EVENT_QOS:

  1173     {

  1174 /*

  1175       gdouble proportion;

  1176       GstClockTimeDiff diff;

  1177       GstClockTime timestamp;

  1179       gst_event_parse_qos (event, &proportion, &diff, &timestamp);

  1180       if (diff > 0)

  1181         nuv->time_qos = timecode + diff;

  1182       else

  1183         nuv->time_qos = -1;

  1184 */

  1185       break;

  1186     }

  1188     case GST_EVENT_EOS:

  1189     default:

  1190       res = gst_pad_event_default (pad, event);

  1191       break;

  1192   }

  1194   gst_object_unref (nuv);

  1195   return res;

  1196 }

  1198 static GstFlowReturn

  1199 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1200 {

  1201   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1203   GST_DEBUG_OBJECT (nuv, " gst_nuv_demux_chain function");

  1204   gst_adapter_push (nuv->priv->adapter, buf);

  1206   gst_object_unref (nuv);

  1207   //gst_buffer_unref (buf);

  1209   return gst_nuv_demux_play (pad);

  1210 }

  1212 static void

  1213 gst_nuv_demux_loop (GstPad * pad)

  1214 {

  1215   gst_nuv_demux_play (pad);

  1216 }

  1218 static void

  1219 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1220 {

  1221   nuv->priv->state = GST_NUV_DEMUX_START;

  1222   nuv->priv->mode = 0;

  1223   nuv->priv->offset = 0;

  1224   nuv->priv->streamer_offset = 0;

  1225   nuv->priv->time_start = 0;

  1226   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1227   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1228   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1229   nuv->priv->duration_average = GST_CLOCK_TIME_NONE;

  1230   gst_segment_init (&nuv->priv->segment, GST_FORMAT_TIME);

  1232   if (nuv->priv->adapter != NULL)

  1233     gst_adapter_clear (nuv->priv->adapter);

  1235   if (nuv->priv->mpeg_buffer != NULL) {

  1236     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1237     nuv->priv->mpeg_buffer = NULL;

  1238   }

  1239 }

  1241 static void

  1242 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1243 {

  1244   if (nuv->priv->src_video_pad) {

  1245     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1246     nuv->priv->src_video_pad = NULL;

  1247   }

  1249   if (nuv->priv->src_audio_pad) {

  1250     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1251     nuv->priv->src_audio_pad = NULL;

  1252   }

  1253 }

  1255 static GstStateChangeReturn

  1256 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1257 {

  1258   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1260   switch (transition) {

  1261     case GST_STATE_CHANGE_NULL_TO_READY:

  1262       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1263       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1264       break;

  1265     default:

  1266       break;

  1267   }

  1269   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1270   if (ret == GST_STATE_CHANGE_FAILURE) {

  1271     goto done;

  1272   }

  1274   switch (transition) {

  1275     case GST_STATE_CHANGE_READY_TO_NULL:

  1276       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1277       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1278       break;

  1279     default:

  1280       break;

  1281   }

  1283 done:

  1284   return ret;

  1285 }

  1287 static void

  1288 gst_nuv_demux_update_duration (GstNuvDemux *nuv, guint64 current_timestamp)

  1289 {

  1290     guint64 interval = 0;

  1291     return;

  1293     if (gst_nuv_demux_get_time_duration (nuv) != GST_CLOCK_TIME_NONE)

  1294         return;

  1296     interval  = current_timestamp - nuv->priv->last_update;

  1298     if (interval > (10 * GST_SECOND)) {

  1299         GstMessage* msg = NULL;

  1300         gint64 average = 0;

  1301         gint64 duration_bytes = gst_nuv_demux_get_bytes_duration (nuv);

  1303         if (duration_bytes == GST_CLOCK_TIME_NONE)

  1304             return;

  1306         interval = gst_util_uint64_scale (1, current_timestamp - nuv->priv->time_start, GST_SECOND);

  1307         if (interval > 0) {

  1308             average = gst_util_uint64_scale (1 , nuv->priv->streamer_offset, interval);

  1309         }

  1310         if (average > 0) {

  1311             nuv->priv->duration_average = gst_util_uint64_scale (GST_SECOND, duration_bytes, average);

  1312         }

  1314         nuv->priv->last_update = current_timestamp;

  1315         msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_average);

  1316         gst_element_post_message (GST_ELEMENT (nuv), msg);

  1317         GST_DEBUG_OBJECT (nuv, "New Duration Average %"G_GUINT64_FORMAT, nuv->priv->duration_average);

  1318     }

  1319 }

  1321 static gint64

  1322 gst_nuv_demux_get_bytes_duration (GstNuvDemux *nuv)

  1323 {

  1324     if (nuv->priv->duration_bytes == GST_CLOCK_TIME_NONE) {

  1325         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1326         GstQuery *query = gst_query_new_duration (GST_FORMAT_BYTES);

  1327         if (gst_pad_query (peer, query)) {

  1328             gint64 duration;

  1330             gst_query_parse_duration (query, NULL, &duration);

  1331             nuv->priv->duration_bytes = duration;

  1332         }

  1333         gst_object_unref (peer);

  1334         gst_query_unref (query);

  1335     }

  1336     return nuv->priv->duration_bytes;

  1337 }

  1339 static gint64

  1340 gst_nuv_demux_get_time_duration (GstNuvDemux *nuv)

  1341 {

  1342     if (nuv->priv->duration_time == GST_CLOCK_TIME_NONE) {

  1343         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1344         GstQuery *query = gst_query_new_duration (GST_FORMAT_TIME);

  1345         if (gst_pad_query (peer, query)) {

  1346             gint64 duration;

  1347             gst_query_parse_duration (query, NULL, &duration);

  1348             nuv->priv->duration_time = duration;

  1349         }

  1350         gst_object_unref (peer);

  1351         gst_query_unref (query);

  1352     }

  1353     return nuv->priv->duration_time;

  1354 }

  1356 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1357 GstBuffer *

  1358 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1359 {

  1360   GstBuffer *buffer;

  1361   GstBuffer *cur;

  1362   guint8 *data;

  1364   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1365   g_return_val_if_fail (nbytes > 0, NULL);

  1367   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1369   /* we don't have enough data, return NULL. This is unlikely

  1370    * as one usually does an _available() first instead of peeking a

  1371    * random size. */

  1372   if (G_UNLIKELY (nbytes > adapter->size))

  1373     return NULL;

  1375   /* our head buffer has enough data left, return it */

  1376   cur = adapter->buflist->data;

  1377   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1378     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1379         nbytes);

  1380     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1382     gst_adapter_flush (adapter, nbytes);

  1384     return buffer;

  1385   }

  1387   data = gst_adapter_take (adapter, nbytes);

  1388   if (data == NULL)

  1389     return NULL;

  1391   buffer = gst_buffer_new ();

  1392   GST_BUFFER_DATA (buffer) = data;

  1393   GST_BUFFER_MALLOCDATA (buffer) = data;

  1394   GST_BUFFER_SIZE (buffer) = nbytes;

  1396   return buffer;

  1397 }

  1398 #endif

  1401 static gboolean

  1402 plugin_init (GstPlugin * plugin)

  1403 {

  1404 #ifdef ENABLE_NLS

  1405   setlocale (LC_ALL, "");

  1406   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1407 #endif /* ENABLE_NLS */

  1409   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1410           GST_TYPE_NUV_DEMUX)) {

  1411     return FALSE;

  1412   }

  1413   return TRUE;

  1414 }

  1416 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1417     GST_VERSION_MINOR,

  1418     "nuvdemux",

  1419     "Demuxes and muxes audio and video",

  1420      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	renatofilho
	Mon Dec 04 13:21:37 2006 +0000 (2006-12-04)
branch	trunk
changeset 181	d9628018e9f7
parent 173	a2ec843160c8
child 182	f61807a4a51c
permissions	-rw-r--r--