gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@9e55f7e4ed6f

     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     g_debug ("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");

   353   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

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

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

   356   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   357       gst_nuv_demux_sink_activate_pull);

   358   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   359       gst_nuv_demux_sink_activate_push);

   360   gst_pad_set_chain_function (nuv->priv->sinkpad,

   361       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   362   gst_pad_set_event_function (nuv->priv->sinkpad,

   363       gst_nuv_demux_sink_event);

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

   366   nuv->priv->new_audio_segment = TRUE;

   367   nuv->priv->new_video_segment = TRUE;

   369   /* creating adapter */

   370   nuv->priv->mode = NUV_PUSH_MODE;

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

   373   gst_nuv_demux_reset (nuv);

   374 }

   376 static void

   377 gst_nuv_demux_dispose (GObject * object)

   378 {

   379   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

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

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

   383   }

   385   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   386   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   390   }

   391 }

   393 static void

   394 gst_nuv_demux_finalize (GObject * object)

   395 {

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

   397 }

   400 /* HeaderLoad:

   401  */

   402 static GstFlowReturn

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

   404 {

   405   GstBuffer *buffer = NULL;

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

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

   409     return res;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   429   GST_DEBUG_OBJECT (nuv,

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

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

   432       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   433       h->i_keyframe_distance);

   435   *h_ret = h;

   436   gst_buffer_unref (buffer);

   437   return res;

   438 }

   440 static GstFlowReturn

   441 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   442 {

   443   GstFlowReturn res;

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

   446   if (res == GST_FLOW_OK)

   447     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   448   return res;

   449 }

   451 /*

   452  * Read NUV file tag

   453  */

   454 static GstFlowReturn

   455 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   456 {

   457   GstFlowReturn res = GST_FLOW_OK;

   458   GstBuffer *file_header = NULL;

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

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

   462     return res;

   463   } else {

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

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

   466       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   467     } else {

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

   469       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   470       res = GST_FLOW_ERROR;

   471     }

   472   }

   473   if (file_header != NULL) {

   474     gst_buffer_unref (file_header);

   475   }

   476   return res;

   477 }

   479 /* FrameHeaderLoad:

   480  */

   481 static GstFlowReturn

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

   483 {

   484   unsigned char *data;

   485   nuv_frame_header *h;

   486   GstBuffer *buf = NULL;

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

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

   491     if (buf != NULL) {

   492       gst_buffer_unref (buf);

   493     }

   494     return res;

   495   }

   497   h = g_new0 (nuv_frame_header, 1);

   498   data = buf->data;

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

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

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

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

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

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

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

   508       h->i_type,

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

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

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

   513   *h_ret = h;

   514   gst_buffer_unref (buf);

   515   return GST_FLOW_OK;

   516 }

   518 static GstFlowReturn

   519 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   520     nuv_extended_header ** h_ret)

   521 {

   522   unsigned char *data;

   523   GstBuffer *buff = NULL;

   524   nuv_extended_header *h;

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

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

   530     if (buff != NULL) {

   531       gst_buffer_unref (buff);

   532     }

   533     return res;

   534   }

   536   h = g_new0 (nuv_extended_header, 1);

   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   *h_ret = h;

   567   gst_buffer_unref (buff);

   568   return res;

   569 }

   572 /* Query Functions */

   573 static const GstQueryType *

   574 gst_nuv_demux_get_src_query_types (GstPad * pad)

   575 {

   576   static const GstQueryType src_types[] = {

   577     GST_QUERY_POSITION,

   578     GST_QUERY_DURATION,

   579     0

   580   };

   582   return src_types;

   583 }

   585 static gboolean

   586 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   587 {

   588   gboolean res = FALSE;

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

   591   switch (GST_QUERY_TYPE (query)) {

   592     case GST_QUERY_POSITION:

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

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

   596         res = TRUE;

   597       }

   598       break;

   599     case GST_QUERY_DURATION:

   600       {

   601         gint64 duration = 0;

   602         duration = gst_nuv_demux_get_time_duration (nuv);

   603         if (duration == GST_CLOCK_TIME_NONE) {

   604             duration = nuv->priv->duration_average;

   605         }

   606         if (duration != GST_CLOCK_TIME_NONE) {

   607             gst_query_set_duration (query, GST_FORMAT_TIME, duration);

   608             res = TRUE;

   609         }

   610       }

   611       break;

   612     default:

   613       res = FALSE;

   614       break;

   615   }

   617   gst_object_unref (nuv);

   619   return res;

   620 }

   622 static GstPad*

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

   624 {

   625     GstPad *pad = NULL;

   626     pad = gst_pad_new_from_static_template (template, name);

   627     gst_pad_set_caps (pad, caps);

   628     gst_pad_set_active (pad, TRUE);

   629     gst_pad_use_fixed_caps (pad);

   630     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   632     return pad;

   633 }

   635 static void

   636 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   637 {

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

   639     GstCaps *video_caps = NULL;

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

   642         "divxversion", G_TYPE_INT, 4,

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

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

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

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

   647         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   651     gst_caps_unref (video_caps);

   652   }

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

   655     GstCaps *audio_caps = NULL;

   657     audio_caps = gst_caps_new_simple ("audio/mpeg",

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

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

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

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

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

   664     gst_caps_unref (audio_caps);

   665   }

   667   gst_element_no_more_pads (GST_ELEMENT (nuv));

   668 }

   670 static GstFlowReturn

   671 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   672 {

   673   GstFlowReturn ret = GST_FLOW_OK;

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

   676   {

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

   678     nuv->priv->fh = NULL;

   679   }

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

   682   if (ret != GST_FLOW_OK)

   683     return ret;

   685   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   686   return ret;

   687 }

   689 static gboolean

   690 gst_nuv_combine_flow (GstNuvDemux *nuv)

   691 {

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

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

   695     if ((ret_video != GST_FLOW_OK) &&

   696         (ret_audio != GST_FLOW_OK))

   697         return FALSE;

   699     if (GST_FLOW_IS_FATAL (ret_video))

   700         return FALSE;

   702     if (GST_FLOW_IS_FATAL (ret_audio))

   703         return FALSE;

   705     return TRUE;

   706 }

   708 static GstFlowReturn

   709 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   710 {

   711   GstFlowReturn ret = GST_FLOW_OK;

   712   GstPad *pad = NULL;

   713   guint64 timestamp;

   714   GstBuffer *buf = NULL;

   715   nuv_frame_header *h = NULL;

   717   h = nuv->priv->fh;

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

   720     goto done;

   722   if (h->i_length > 0) {

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

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

   725 		  return ret;

   727       if (h->i_timecode < 0) {

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

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

   730       }

   731       else

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

   734       timestamp = h->i_timecode * GST_MSECOND;

   736       GST_BUFFER_SIZE (buf) = h->i_length;

   737       GST_BUFFER_TIMESTAMP (buf) = timestamp;

   738   }

   739   else {

   740     goto done;

   741   }

   744   switch (h->i_type) {

   745     case 'V':

   746     {

   747       pad = nuv->priv->src_video_pad;

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

   751         /* send new segment event*/

   752         gst_pad_push_event (nuv->priv->src_video_pad,

   753           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   754                                      GST_CLOCK_TIME_NONE, 0));

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

   757             nuv->priv->time_start = timestamp;

   758         }

   759         nuv->priv->new_video_segment = FALSE;

   760       }

   762       break;

   763     }

   764     case 'A':

   765     {

   766       pad = nuv->priv->src_audio_pad;

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

   769         /* send new segment event*/

   770         gst_pad_push_event (nuv->priv->src_audio_pad,

   771           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   772                                      GST_CLOCK_TIME_NONE, 0));

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

   775             nuv->priv->time_start = timestamp;

   776         }

   777         nuv->priv->new_audio_segment = FALSE;

   778       }

   780       break;

   781     }

   782     case 'S':

   783     {

   784       switch (h->i_compression) {

   785         case 'V':

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

   787           gst_pad_push_event (nuv->priv->src_video_pad,

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

   789               		GST_CLOCK_TIME_NONE, 0));

   790           break;

   791         case 'A':

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

   793           gst_pad_push_event (nuv->priv->src_audio_pad,

   794               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   795               		GST_CLOCK_TIME_NONE, 0));

   796           break;

   797         default:

   798           break;

   799       }

   800       if (buf != NULL)

   801         gst_buffer_unref (buf);

   803       goto done;

   804     }

   805     default:

   806       if (buf != NULL)

   807         gst_buffer_unref (buf);

   809       break;

   810   }

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

   813       /* update average time */

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

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

   816       gst_nuv_demux_update_duration (nuv, timestamp);

   818       /* pushing the buffer */

   819       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   820       ret = gst_pad_push (pad, buf);

   822       if (ret != GST_FLOW_OK) {

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

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

   826             nuv->priv->last_video_return = ret;

   827         }

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

   829             nuv->priv->last_audio_return = ret;

   830         }

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

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

   834             ret = GST_FLOW_OK;

   835         }

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

   838       }

   839   }

   841 done:

   842   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   844   nuv->priv->fh = NULL;

   845   return ret;

   846 }

   848 static GstFlowReturn

   849 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   850 {

   851   GstFlowReturn ret = GST_FLOW_OK;

   853   /* ffmpeg extra data */

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

   855       &nuv->priv->mpeg_buffer);

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

   857     return ret;

   858   }

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

   861   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   862   return ret;

   863 }

   865 static GstFlowReturn

   866 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   867 {

   868   GstFlowReturn ret = GST_FLOW_OK;

   870   /* Load 'D' */

   871   nuv_frame_header *h;

   873   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   874   if (ret != GST_FLOW_OK)

   875     return ret;

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

   878     g_free (h);

   879     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   880     return GST_FLOW_NOT_SUPPORTED;

   881   }

   883   if (h->i_length > 0) {

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

   885       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   886     } else {

   887       g_free (h);

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

   889       return GST_FLOW_NOT_SUPPORTED;

   890     }

   891   } else {

   892     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   893   }

   895   g_free (h);

   896   h = NULL;

   897   return ret;

   898 }

   900 static GstFlowReturn

   901 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   902 {

   903   GstFlowReturn ret = GST_FLOW_OK;

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

   906   if (ret != GST_FLOW_OK)

   907     return ret;

   909   gst_nuv_demux_create_pads (nuv);

   910   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

   911   return ret;

   912 }

   914 static GstFlowReturn

   915 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   916 {

   917   GstBuffer *buf = NULL;

   918   GstFlowReturn res = GST_FLOW_OK;

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

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

   922     if (buf != NULL) {

   923       gst_buffer_unref (buf);

   924     }

   925     return res;

   926   }

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

   929     gst_buffer_unref (buf);

   930     buf = NULL;

   931     nuv_frame_header *h = NULL;

   933     res = gst_nuv_demux_frame_header_load (nuv, &h);

   934     if (res != GST_FLOW_OK)

   935       return res;

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

   938       g_free (h);

   939       return GST_FLOW_ERROR;

   940     }

   941     g_free (h);

   942     h = NULL;

   943     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

   944   } else {

   945     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   946     g_object_unref (buf);

   947     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

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

   949     return GST_FLOW_ERROR;

   950   }

   951   return res;

   952 }

   954 static GstFlowReturn

   955 gst_nuv_demux_play (GstPad * pad)

   956 {

   957   GstFlowReturn res = GST_FLOW_OK;

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

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

   961     case GST_NUV_DEMUX_START:

   962       res = gst_nuv_demux_stream_file_header (nuv);

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

   964         goto pause;

   965       }

   966       break;

   968     case GST_NUV_DEMUX_HEADER_DATA:

   969       res = gst_nuv_demux_stream_header_data (nuv);

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

   971         goto pause;

   972       }

   973       break;

   975     case GST_NUV_DEMUX_EXTRA_DATA:

   976       res = gst_nuv_demux_stream_extra_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_MPEG_DATA:

   983       res = gst_nuv_demux_stream_mpeg_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_EXTEND_HEADER:

   990       res = gst_nuv_demux_stream_extend_header (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_DATA:

   997       res = gst_nuv_demux_stream_extend_header_data (nuv);

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

   999         goto pause;

  1000       }

  1001       break;

  1003     case GST_NUV_DEMUX_FRAME_HEADER:

  1004       res = gst_nuv_demux_read_head_frame (nuv);

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

  1006         goto pause;

  1007       }

  1008       break;

  1010     case GST_NUV_DEMUX_MOVI:

  1011       res = gst_nuv_demux_stream_data (nuv);

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

  1013         goto pause;

  1014       }

  1015       break;

  1017     case GST_NUV_DEMUX_INVALID_DATA:

  1018       goto pause;

  1019       break;

  1020     default:

  1021       g_assert_not_reached ();

  1022   }

  1024   GST_DEBUG_OBJECT (nuv, "state: %d res:%s", nuv->priv->state, gst_flow_get_name (res));

  1026   return GST_FLOW_OK;

  1028 pause:

  1029   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1030   gst_pad_pause_task (nuv->priv->sinkpad);

  1031   if (GST_FLOW_IS_FATAL (res)) {

  1032     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1033         (_("Internal data stream error.")),

  1034         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1036     gst_nuv_demux_send_eos (nuv);

  1037   }

  1038   return res;

  1039 }

  1041 static void

  1042 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1043 {

  1044   gst_element_post_message (GST_ELEMENT (nuv),

  1045       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1047   if (nuv->priv->src_video_pad)

  1048     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1049   if (nuv->priv->src_audio_pad)

  1050     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1051 }

  1053 static GstFlowReturn

  1054 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1055     GstBuffer ** buffer)

  1056 {

  1057   GstFlowReturn ret = GST_FLOW_OK;

  1059   if (size == 0) {

  1060     return ret;

  1061   }

  1063   if (nuv->priv->mode == NUV_PULL_MODE) {

  1064     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1065     if (ret == GST_FLOW_OK) {

  1066         if (move) {

  1067 		    nuv->priv->offset += size;

  1068 		}

  1069       /* got eos */

  1070     } else if (ret == GST_FLOW_UNEXPECTED) {

  1071       if (buffer != NULL)

  1072           gst_buffer_unref (buffer);

  1074       gst_nuv_demux_send_eos (nuv);

  1075       return GST_FLOW_WRONG_STATE;

  1076     }

  1077   } else {

  1078     if (gst_adapter_available (nuv->priv->adapter) < size)

  1079       return GST_FLOW_ERROR_NO_DATA;

  1081     if (move) {

  1082       guint8 *data = NULL;

  1083       data = (guint8 *) gst_adapter_take (nuv->priv->adapter, size);

  1084       *buffer = gst_buffer_new ();

  1085       gst_buffer_set_data (*buffer, data, size);

  1086     } else {

  1087       guint8 *data = NULL;

  1088       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1089       *buffer = gst_buffer_new ();

  1090       gst_buffer_set_data (*buffer, data, size);

  1091     }

  1092   }

  1093   return ret;

  1094 }

  1096 static gboolean

  1097 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1098 {

  1099   gboolean res = TRUE;

  1100   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1102   if (gst_pad_check_pull_range (sinkpad)) {

  1103       g_debug ("PULL");

  1104     res = gst_pad_activate_pull (sinkpad, TRUE);

  1105   } else {

  1106       g_debug ("PUSH");

  1107     res = gst_pad_activate_push (sinkpad, TRUE);

  1108   }

  1109   g_object_unref (nuv);

  1110   return res;

  1111 }

  1113 static gboolean

  1114 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1115 {

  1116   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1118   g_debug ("gst_nuv_demux_sink_activate_pull: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx");

  1119   if (active) {

  1120     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1121     nuv->priv->mode = NUV_PULL_MODE;

  1122     if (nuv->priv->adapter) {

  1123       gst_adapter_clear (nuv->priv->adapter);

  1124       g_object_unref (nuv->priv->adapter);

  1125       nuv->priv->adapter = NULL;

  1126     }

  1127     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1128   } else {

  1129     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1130     gst_pad_stop_task (sinkpad);

  1131   }

  1132   gst_object_unref (nuv);

  1134   return TRUE;

  1135 }

  1137 static gboolean

  1138 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1139 {

  1140   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1142   g_debug ("gst_nuv_demux_sink_activate_push: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx");

  1144   if (active) {

  1145     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1146   } else {

  1147     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1148   }

  1150   gst_object_unref (nuv);

  1152   return TRUE;

  1153 }

  1156 static gboolean

  1157 gst_nuv_demux_sink_event (GstPad *pad, GstEvent *event)

  1158 {

  1159   gboolean res;

  1160   GstNuvDemux *nuv;

  1162   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1164   switch (GST_EVENT_TYPE (event)) {

  1165     case GST_EVENT_SEEK:

  1166     {

  1167       gdouble rate;

  1168       GstFormat format;

  1169       GstSeekFlags flags;

  1170       GstSeekType cur_type;

  1171       gint64 cur;

  1172       GstSeekType stop_type;

  1173       gint64 stop;

  1175       gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop);

  1177       GST_DEBUG_OBJECT (nuv, "got seek, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, cur, stop);

  1179       break;

  1180     }

  1181     case GST_EVENT_NEWSEGMENT:

  1182     {

  1183       gint64 start, stop, time;

  1184       gdouble rate, arate;

  1185       GstFormat format;

  1186       gboolean update;

  1188       GST_DEBUG_OBJECT (nuv, "got a new segment event");

  1189       gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,

  1190           &start, &stop, &time);

  1192       GST_DEBUG_OBJECT (nuv, "got newsegment, start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, start, stop);

  1193       nuv->priv->duration_bytes = stop - start;

  1194       gst_event_unref (event);

  1195       res = TRUE;

  1196       break;

  1197     }

  1198     case GST_EVENT_QOS:

  1199     {

  1200 /*

  1201       gdouble proportion;

  1202       GstClockTimeDiff diff;

  1203       GstClockTime timestamp;

  1205       gst_event_parse_qos (event, &proportion, &diff, &timestamp);

  1206       if (diff > 0)

  1207         nuv->time_qos = timecode + diff;

  1208       else

  1209         nuv->time_qos = -1;

  1210 */

  1212       break;

  1213     }

  1215     case GST_EVENT_EOS:

  1216     default:

  1217       res = gst_pad_event_default (pad, event);

  1218       break;

  1219   }

  1221   gst_object_unref (nuv);

  1222   return res;

  1223 }

  1225 static GstFlowReturn

  1226 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1227 {

  1228   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1230   GST_DEBUG_OBJECT (nuv, " gst_nuv_demux_chain function");

  1231   g_debug (" gst_nuv_demux_chain function");

  1232   gst_adapter_push (nuv->priv->adapter, buf);

  1234   gst_object_unref (nuv);

  1236   return gst_nuv_demux_play (pad);

  1237 }

  1239 static void

  1240 gst_nuv_demux_loop (GstPad * pad)

  1241 {

  1242   gst_nuv_demux_play (pad);

  1243 }

  1245 static void

  1246 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1247 {

  1248   nuv->priv->state = GST_NUV_DEMUX_START;

  1249   nuv->priv->mode = 0;

  1250   nuv->priv->offset = 0;

  1251   nuv->priv->streamer_offset = 0;

  1252   nuv->priv->time_start = 0;

  1253   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1254   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1255   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1256   nuv->priv->duration_average = GST_CLOCK_TIME_NONE;

  1257   gst_segment_init (&nuv->priv->segment, GST_FORMAT_TIME);

  1259   if (nuv->priv->adapter != NULL)

  1260     gst_adapter_clear (nuv->priv->adapter);

  1262   if (nuv->priv->mpeg_buffer != NULL) {

  1263     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1264     nuv->priv->mpeg_buffer = NULL;

  1265   }

  1267   g_free (nuv->priv->h);

  1268   nuv->priv->h = NULL;

  1270   g_free (nuv->priv->eh);

  1271   nuv->priv->eh = NULL;

  1273   g_free (nuv->priv->fh);

  1274   nuv->priv->fh = NULL;

  1275 }

  1277 static void

  1278 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1279 {

  1280   if (nuv->priv->src_video_pad) {

  1281     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1282     nuv->priv->src_video_pad = NULL;

  1283   }

  1285   if (nuv->priv->src_audio_pad) {

  1286     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1287     nuv->priv->src_audio_pad = NULL;

  1288   }

  1289 }

  1291 static GstStateChangeReturn

  1292 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1293 {

  1294   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1296   g_debug ("TRANSI %d", transition);

  1297   switch (transition) {

  1298     case GST_STATE_CHANGE_NULL_TO_READY:

  1299       g_debug ("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXxxxxx= RESET");

  1300       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1301       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1302       break;

  1303     default:

  1304       break;

  1305   }

  1307   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1308   if (ret == GST_STATE_CHANGE_FAILURE) {

  1309       g_debug ("FFFFFFFFFFFFFFFFFFFFFAAAAAAAAAAAAAAAAAIIIIIIIIIIIIIIIIIILLLLLLLLLLLLLLLLLL");

  1310     goto done;

  1311   }

  1313   switch (transition) {

  1314     case GST_STATE_CHANGE_READY_TO_NULL:

  1315       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1316       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1317       break;

  1318     default:

  1319       break;

  1320   }

  1322 done:

  1323   return ret;

  1324 }

  1326 static void

  1327 gst_nuv_demux_update_duration (GstNuvDemux *nuv, guint64 current_timestamp)

  1328 {

  1329     guint64 interval = 0;

  1331     if (gst_nuv_demux_get_time_duration (nuv) != GST_CLOCK_TIME_NONE)

  1332         return;

  1334     interval  = current_timestamp - nuv->priv->last_update;

  1336     if (interval > (10 * GST_SECOND)) {

  1337         GstMessage* msg = NULL;

  1338         gint64 average = 0;

  1339         gint64 duration_bytes = gst_nuv_demux_get_bytes_duration (nuv);

  1341         if (duration_bytes == GST_CLOCK_TIME_NONE)

  1342             return;

  1344         if (current_timestamp > 0) {

  1345             interval = gst_util_uint64_scale (1, current_timestamp - nuv->priv->time_start, GST_SECOND);

  1346             if (interval > 0) {

  1347                 average = gst_util_uint64_scale (1 , nuv->priv->streamer_offset, interval);

  1348             }

  1349             if (average > 0) {

  1350                 nuv->priv->duration_average = gst_util_uint64_scale (GST_SECOND, duration_bytes, average);

  1351             }

  1352             nuv->priv->last_update = current_timestamp;

  1353             msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_average);

  1354             gst_element_post_message (GST_ELEMENT (nuv), msg);

  1355             GST_DEBUG_OBJECT (nuv, "New Duration Average %"G_GUINT64_FORMAT, nuv->priv->duration_average);

  1356         }

  1357     }

  1358 }

  1360 static gint64

  1361 gst_nuv_demux_get_bytes_duration (GstNuvDemux *nuv)

  1362 {

  1363     if (nuv->priv->duration_bytes == GST_CLOCK_TIME_NONE) {

  1364         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1365         GstQuery *query = gst_query_new_duration (GST_FORMAT_BYTES);

  1366         if (gst_pad_query (peer, query)) {

  1367             gint64 duration;

  1369             gst_query_parse_duration (query, NULL, &duration);

  1370             nuv->priv->duration_bytes = duration;

  1371         }

  1372         gst_object_unref (peer);

  1373         gst_query_unref (query);

  1374     }

  1375     return nuv->priv->duration_bytes;

  1376 }

  1378 static gint64

  1379 gst_nuv_demux_get_time_duration (GstNuvDemux *nuv)

  1380 {

  1381     if (nuv->priv->duration_time == GST_CLOCK_TIME_NONE) {

  1382         GstPad *peer = gst_pad_get_peer (nuv->priv->sinkpad);

  1383         GstQuery *query = gst_query_new_duration (GST_FORMAT_TIME);

  1384         if (gst_pad_query (peer, query)) {

  1385             gint64 duration;

  1386             gst_query_parse_duration (query, NULL, &duration);

  1387             nuv->priv->duration_time = duration;

  1388         }

  1389         gst_object_unref (peer);

  1390         gst_query_unref (query);

  1391     }

  1392     return nuv->priv->duration_time;

  1393 }

  1396 static gboolean

  1397 plugin_init (GstPlugin * plugin)

  1398 {

  1399 #ifdef ENABLE_NLS

  1400   setlocale (LC_ALL, "");

  1401   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1402 #endif /* ENABLE_NLS */

  1404   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1405           GST_TYPE_NUV_DEMUX)) {

  1406     return FALSE;

  1407   }

  1408   return TRUE;

  1409 }

  1411 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1412     GST_VERSION_MINOR,

  1413     "nuvdemux",

  1414     "Demuxes and muxes audio and video",

  1415     plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	renatofilho
	Wed Nov 29 17:01:37 2006 +0000 (2006-11-29)
branch	trunk
changeset 137	9e55f7e4ed6f
parent 136	a60f905e0412
child 138	1c777fffb664
permissions	-rw-r--r--