gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@f310d1d086b5

     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

    64 #define GST_FLOW_ERROR_EOS	-102

    66 enum

    67 {

    68    NUV_PUSH_MODE = 0,

    69    NUV_PULL_MODE

    70 };

    72 GST_DEBUG_CATEGORY_EXTERN (GST_CAT_EVENT);

    74 static const GstElementDetails gst_nuv_demux_details =

    75 GST_ELEMENT_DETAILS ("Nuv demuxer",

    76     "Codec/Demuxer",

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

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

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

    82 /* file header */

    83 typedef struct

    84 {

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

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

    88     gint  i_width;

    89     gint  i_height;

    90     gint  i_width_desired;

    91     gint  i_height_desired;

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

    95     gdouble  d_aspect;       /* 1.0 squared pixel */

    96     gdouble  d_fps;

    97     //fps num/denom

    98     gint     i_fpsn;

    99     gint     i_fpsd;

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

   102     gint     i_audio_blocks;

   103     gint     i_text_blocks;

   105     gint     i_keyframe_distance;

   107 } nuv_header;

   109 /* frame header */

   110 typedef struct

   111 {

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

   113                            R: Seekpoint (string:RTjjjjjjjj)

   114                            D: Extra data for codec */

   115     gchar i_compression; /* V: 0 uncompressed

   116                               1 RTJpeg

   117                               2 RTJpeg+lzo

   118                               N black frame

   119                               L copy last

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

   121                               1 lzo

   122                               2 layer 2

   123                               3 layer 3

   124                               F flac

   125                               S shorten

   126                               N null frame loudless

   127                               L copy last

   128                             S: B audio and vdeo sync point

   129                                A audio sync info (timecode == effective

   130                                     dsp frequency*100)

   131                                V next video sync (timecode == next video

   132                                     frame num)

   133                                S audio,video,text correlation */

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

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

   136                            0x02: gauss 5 pixel (8,1,1,1,1)/12

   137                            0x04: cartoon filter */

   139     gint32 i_timecode;     /* ms */

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

   142                            S: length of packet correl */

   143 } nuv_frame_header;

   146 /* FIXME Not sure of this one */

   147 typedef struct

   148 {

   149     gint             i_version;

   150     guint32	     i_video_fcc;

   152     guint32	     i_audio_fcc;

   153     gint             i_audio_sample_rate;

   154     gint             i_audio_bits_per_sample;

   155     gint             i_audio_channels;

   156     gint             i_audio_compression_ratio;

   157     gint             i_audio_quality;

   158     gint             i_rtjpeg_quality;

   159     gint             i_rtjpeg_luma_filter;

   160     gint             i_rtjpeg_chroma_filter;

   161     gint             i_lavc_bitrate;

   162     gint             i_lavc_qmin;

   163     gint             i_lavc_qmax;

   164     gint             i_lavc_maxqdiff;

   165     gint64           i_seekable_offset;

   166     gint64           i_keyframe_adjust_offset;

   168 } nuv_extended_header;

   170 typedef struct

   171 {

   172   gint64 timecode;

   173   gint64 offset;

   175 } frame_index_data;

   177 typedef enum {

   178   GST_NUV_DEMUX_START,

   179   GST_NUV_DEMUX_HEADER_DATA,

   180   GST_NUV_DEMUX_EXTRA_DATA,

   181   GST_NUV_DEMUX_MPEG_DATA,

   182   GST_NUV_DEMUX_EXTEND_HEADER,

   183   GST_NUV_DEMUX_EXTEND_HEADER_DATA,

   184   GST_NUV_DEMUX_INDEX_CREATE,

   185   GST_NUV_DEMUX_FRAME_HEADER,

   186   GST_NUV_DEMUX_MOVI,

   187   GST_NUV_DEMUX_INVALID_DATA

   188 } GstNuvDemuxState;

   190 struct _GstNuvDemuxPrivate {

   191   /* used for indicate the mode */

   192   guint         mode;

   194   /* used on push mode */

   195   GstAdapter    *adapter;

   197   /* pads */

   198   GstPad        *sinkpad;

   199   GstPad        *src_video_pad;

   200   GstPad        *src_audio_pad;

   202   /* Flow control */

   203   GstFlowReturn     last_video_return;

   204   GstFlowReturn     last_audio_return;

   205   gboolean          more_data;

   206   gboolean	    eos;

   208   /* NUV decoding state */

   209   GstNuvDemuxState  state;

   210   guint64           offset;

   212   /* duration information */

   213   guint64            duration_bytes;

   214   guint64            duration_time;

   215   guint64            segment_stop;

   216   guint64            segment_start;

   218   /* segment control info */

   219   gboolean          new_audio_segment;

   220   gboolean          new_video_segment;

   222   /* Mpeg ExtraData */

   223   guint64           mpeg_data_size;

   224   GstBuffer         *mpeg_buffer;

   226   /* Headers */

   227   nuv_header h;

   228   nuv_extended_header eh;

   229   nuv_frame_header fh;

   231   /* anothers info */

   232   gint64            header_lengh;

   233   gint64            time_start;

   234   gint64            time_diff;

   235   gint64            time_qos;

   236   guint64           last_frame_time;

   237   GSList            *index;

   238 };

   241 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",

   242     GST_PAD_SINK,

   243     GST_PAD_ALWAYS,

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

   246 static GstStaticPadTemplate audio_src_template =

   247 GST_STATIC_PAD_TEMPLATE ("audio_src",

   248     GST_PAD_SRC,

   249     GST_PAD_SOMETIMES,

   250     GST_STATIC_CAPS_ANY);

   252 static GstStaticPadTemplate video_src_template =

   253 GST_STATIC_PAD_TEMPLATE ("video_src",

   254     GST_PAD_SRC,

   255     GST_PAD_SOMETIMES,

   256     GST_STATIC_CAPS_ANY);

   258 static void gst_nuv_demux_dispose (GObject * object);

   259 static void gst_nuv_demux_finalize (GObject * object);

   260 static GstStateChangeReturn gst_nuv_demux_change_state (GstElement * element,

   261     GstStateChange transition);

   262 static void gst_nuv_demux_loop (GstPad * pad);

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

   264 static GstFlowReturn gst_nuv_demux_play (GstPad * pad);

   265 static gboolean gst_nuv_demux_sink_activate_pull (GstPad * sinkpad,

   266     gboolean active);

   267 static gboolean gst_nuv_demux_sink_activate_push (GstPad * pad,

   268     gboolean active);

   269 static gboolean gst_nuv_demux_sink_activate (GstPad * sinkpad);

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

   271 static gboolean gst_nuv_demux_srcpad_event  (GstPad * pad, GstEvent * event);

   272 static frame_index_data * gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

   273   gint64 segment_stop, GstFormat format);

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

   278     gboolean move, GstBuffer ** buffer);

   279 static void gst_nuv_demux_reset (GstNuvDemux * nuv);

   280 static void gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv);

   281 static void gst_nuv_demux_send_eos (GstNuvDemux * nuv);

   282 static void gst_nuv_demux_create_seek_index (GstNuvDemux * nuv);

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

   286 GstBuffer * gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes);

   287 #endif

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

   292 /******************************************************************************

   293  * Utils function

   294  ******************************************************************************/

   295 #if G_BYTE_ORDER == G_BIG_ENDIAN

   296 static inline gdouble

   297 _gdouble_swap_le_be (gdouble * d)

   298 {

   299   union

   300   {

   301     guint64 i;

   302     gdouble d;

   303   } u;

   305   u.d = *d;

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

   307   return u.d;

   308 }

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

   311 #else /* G_BYTE_ORDER != G_BIG_ENDIAN */

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

   313 #endif /* G_BYTE_ORDER != G_BIG_ENDIAN */

   315 static void

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

   317 {

   318     if (in == 29.97) {

   319         *num = 30000;

   320         *denom = 1001;

   321     } else if (in == 23.976) {

   322         *num = 24000;

   323         *denom = 1001;

   324     } else {

   325         *denom = 1;

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

   327             *denom *= 10;

   328             in *= 10.0;

   329         }

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

   331     }

   332 }

   334 /* GObject Functions */

   336 static void

   337 gst_nuv_demux_base_init (gpointer klass)

   338 {

   339   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

   341   gst_element_class_add_pad_template (element_class,

   342       gst_static_pad_template_get (&audio_src_template));

   344   gst_element_class_add_pad_template (element_class,

   345       gst_static_pad_template_get (&video_src_template));

   347   gst_element_class_add_pad_template (element_class,

   348       gst_static_pad_template_get (&sink_template));

   349   gst_element_class_set_details (element_class, &gst_nuv_demux_details);

   350 }

   352 static void

   353 gst_nuv_demux_class_init (GstNuvDemuxClass * klass)

   354 {

   355   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);

   356   GObjectClass *gobject_class = (GObjectClass *) klass;

   358   GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",

   359       0, "Demuxer for NUV streams");

   361   parent_class = g_type_class_peek_parent (klass);

   363   gobject_class->dispose = gst_nuv_demux_dispose;

   364   gobject_class->finalize = gst_nuv_demux_finalize;

   365   gstelement_class->change_state = gst_nuv_demux_change_state;

   367   g_type_class_add_private (gobject_class, sizeof (GstNuvDemuxPrivate));

   368 }

   370 static void

   371 gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)

   372 {

   373   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

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

   376   /* creating adapter */

   377   nuv->priv->mode = NUV_PUSH_MODE;

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

   380   g_debug ("Adapter %p", nuv->priv->adapter);

   382   nuv->priv->new_audio_segment = TRUE;

   383   nuv->priv->new_video_segment = TRUE;

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

   386   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   387       gst_nuv_demux_sink_activate_pull);

   388   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   389       gst_nuv_demux_sink_activate_push);

   390   gst_pad_set_chain_function (nuv->priv->sinkpad,

   391       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   392 /*

   393   gst_pad_set_event_function (nuv->priv->sinkpad,

   394       gst_nuv_demux_sink_event);

   395 */

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

   399 }

   401 static void

   402 gst_nuv_demux_dispose (GObject * object)

   403 {

   404   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

   406   g_debug ("NUV DISPOSE");

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

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

   410   }

   412   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   413   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   417   }

   418 }

   420 static void

   421 gst_nuv_demux_finalize (GObject * object)

   422 {

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

   424 }

   427 /* HeaderLoad:

   428  */

   429 static GstFlowReturn

   430 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header *h)

   431 {

   432   GstBuffer *buffer = NULL;

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

   435   if ((res != GST_FLOW_OK) || (buffer == NULL)) {

   436       goto done;

   437   }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   455   GST_DEBUG_OBJECT (nuv,

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

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

   458       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   459       h->i_keyframe_distance);

   461 done:

   462   if (buffer != NULL) {

   463      gst_buffer_unref (buffer);

   464      buffer = NULL;

   465   }

   466   return res;

   467 }

   469 static GstFlowReturn

   470 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   471 {

   472   GstFlowReturn res;

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

   475   if (res == GST_FLOW_OK)

   476     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   477   return res;

   478 }

   480 /*

   481  * Read NUV file tag

   482  */

   483 static GstFlowReturn

   484 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   485 {

   486   GstFlowReturn res = GST_FLOW_OK;

   487   GstBuffer *file_header = NULL;

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

   490   if (res == GST_FLOW_OK) {

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

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

   493       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   494     } else {

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

   496       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   497       res = GST_FLOW_ERROR;

   498     }

   499   }

   501   if (file_header != NULL) {

   502     gst_buffer_unref (file_header);

   503     file_header = NULL;

   504   }

   505   return res;

   506 }

   508 /* FrameHeaderLoad:

   509  */

   510 static GstFlowReturn

   511 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header *h)

   512 {

   513   unsigned char *data;

   514   GstBuffer *buf = NULL;

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

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

   519       goto done;

   520   }

   522   data = buf->data;

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

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

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

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

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

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

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

   532       h->i_type,

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

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

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

   537 done:

   538   if (buf != NULL) {

   539       gst_buffer_unref (buf);

   540       buf = NULL;

   541   }

   543   return res;

   544 }

   546 static GstFlowReturn

   547 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   548     nuv_extended_header * h)

   549 {

   550   unsigned char *data;

   551   GstBuffer *buff = NULL;

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

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

   556       goto done;

   557   }

   559   data = buff->data;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   578   GST_DEBUG_OBJECT (nuv,

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

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

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

   582       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   583       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   584       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

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

   586       h->i_keyframe_adjust_offset);

   588 done:

   589   if (buff != NULL) {

   590     gst_buffer_unref (buff);

   591     buff = NULL;

   592   }

   593   return res;

   594 }

   597 /* Query Functions */

   598 static const GstQueryType *

   599 gst_nuv_demux_get_src_query_types (GstPad * pad)

   600 {

   601   static const GstQueryType src_types[] = {

   602     GST_QUERY_POSITION,

   603     GST_QUERY_DURATION,

   604     0

   605   };

   607   return src_types;

   608 }

   610 static gboolean

   611 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   612 {

   613   gboolean res = FALSE;

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

   616   switch (GST_QUERY_TYPE (query)) {

   617     case GST_QUERY_POSITION:

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

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

   620         res = TRUE;

   621       }

   622       break;

   623     case GST_QUERY_DURATION:

   624       {

   625         if (nuv->priv->duration_time != GST_CLOCK_TIME_NONE) {

   626             gst_query_set_duration (query, GST_FORMAT_TIME, nuv->priv->duration_time);

   627 	    res = TRUE;

   628         }

   629       }

   630       break;

   631     default:

   632       res = FALSE;

   633       break;

   634   }

   636   gst_object_unref (nuv);

   638   return res;

   639 }

   641 static GstPad*

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

   643 {

   644     GstPad *pad = NULL;

   645     pad = gst_pad_new_from_static_template (template, name);

   646     gst_pad_set_caps (pad, caps);

   647     gst_pad_set_active (pad, TRUE);

   648     gst_pad_use_fixed_caps (pad);

   649     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   651     gst_pad_set_event_function (pad,

   652       GST_DEBUG_FUNCPTR (gst_nuv_demux_srcpad_event));

   654     gst_pad_set_query_type_function (pad,

   655       GST_DEBUG_FUNCPTR (gst_nuv_demux_get_src_query_types));

   657     gst_pad_set_query_function (pad,

   658       GST_DEBUG_FUNCPTR (gst_nuv_demux_handle_src_query));

   661     return pad;

   662 }

   664 static void

   665 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   666 {

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

   668     GstCaps *video_caps = NULL;

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

   671         "divxversion", G_TYPE_INT, 4,

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

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

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

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

   676         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   680     gst_caps_unref (video_caps);

   681   }

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

   684     GstCaps *audio_caps = NULL;

   686     audio_caps = gst_caps_new_simple ("audio/mpeg",

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

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

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

   690         "layer", G_TYPE_INT, 3, // fixme: magic number

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

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

   694     gst_caps_unref (audio_caps);

   695   }

   697   gst_element_no_more_pads (GST_ELEMENT (nuv));

   698 }

   700 static gboolean

   701 gst_nuv_demux_validate_header (nuv_frame_header *h)

   702 {

   703   gboolean valid = FALSE;

   704   //g_debug ("Type %d   =  Compression %d", h->i_type, h->i_compression);

   705   //g_usleep (1 * G_USEC_PER_SEC );

   706   switch  (h->i_type) {

   707 /*

   708     case 'V':

   709       if (h->i_compression == 0 ||

   710           h->i_compression == 1 ||

   711           h->i_compression == 2 ||

   712           h->i_compression == 'N' ||

   713           h->i_compression == 'L') {

   714          valid = TRUE;

   715       }

   716       break;

   717     case 'A':

   718       if (h->i_compression == 0 ||

   719           h->i_compression == 1 ||

   720           h->i_compression == 2 ||

   721           h->i_compression == 3 ||

   722           h->i_compression == 'F' ||

   723           h->i_compression == 'S' ||

   724           h->i_compression == 'N' ||

   725           h->i_compression == 'L') {

   726          valid = TRUE;

   727       }

   728       break;

   729     case 'S':

   730       if (h->i_compression == 'B' ||

   731           h->i_compression == 'A' ||

   732           h->i_compression == 'V' ||

   733           h->i_compression == 'S') {

   734          valid = TRUE;

   735       }

   736       break;

   737 */

   738     case 'A':

   739     case 'V':

   740     case 'S':

   741     case 'R':

   742     case 'D':

   743     case 'Q':

   744       valid  = TRUE;

   745       break;

   746     default:

   747       valid = FALSE;

   748   }

   750   return valid;

   751 }

   753 static GstFlowReturn

   754 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   755 {

   756   GstFlowReturn ret = GST_FLOW_OK;

   757   gboolean valid = FALSE;

   759   do {

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

   761     if (ret != GST_FLOW_OK) {

   762       return ret;

   763     }

   765     if (gst_nuv_demux_validate_header (&nuv->priv->fh) == TRUE)

   766       valid = TRUE;

   768   } while (valid == FALSE);

   770   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   771   return ret;

   772 }

   774 static gboolean

   775 gst_nuv_combine_flow (GstNuvDemux *nuv)

   776 {

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

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

   780     if ((ret_video != GST_FLOW_OK) &&

   781         (ret_audio != GST_FLOW_OK))

   782         return FALSE;

   784     if (GST_FLOW_IS_FATAL (ret_video))

   785         return FALSE;

   787     if (GST_FLOW_IS_FATAL (ret_audio))

   788         return FALSE;

   790     return TRUE;

   791 }

   793 static GstFlowReturn

   794 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   795 {

   796   GstFlowReturn ret = GST_FLOW_OK;

   797   GstPad *pad = NULL;

   798   guint64 timestamp;

   799   GstBuffer *buf = NULL;

   800   nuv_frame_header h;

   802   h = nuv->priv->fh;

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

   805     goto done;

   807   if (h.i_length > 0) {

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

   809     if ((ret != GST_FLOW_OK) || (buf == NULL)) {

   810       goto done;

   811     }

   813     if ((h.i_timecode < 0)) {

   814       h.i_timecode = 0;

   815       //goto done;

   816     }

   818     timestamp = h.i_timecode * GST_MSECOND;

   819     GST_BUFFER_TIMESTAMP (buf) = timestamp;

   820   }

   821   else {

   822     goto done;

   823   }

   826   switch (h.i_type) {

   827     case 'V':

   828     {

   829       pad = nuv->priv->src_video_pad;

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

   833         /* send new segment event*/

   834         gst_pad_push_event (nuv->priv->src_video_pad,

   835           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   836                                      GST_CLOCK_TIME_NONE, 0));

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

   839             nuv->priv->time_start = timestamp;

   840         }

   841         nuv->priv->new_video_segment = FALSE;

   842       }

   844       break;

   845     }

   846     case 'A':

   847     {

   848       pad = nuv->priv->src_audio_pad;

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

   851         /* send new segment event*/

   852         gst_pad_push_event (nuv->priv->src_audio_pad,

   853           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   854                                      GST_CLOCK_TIME_NONE, 0));

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

   857             nuv->priv->time_start = timestamp;

   858         }

   859         nuv->priv->new_audio_segment = FALSE;

   860       }

   862       break;

   863     }

   864     case 'S':

   865    {

   866       switch (h.i_compression) {

   867         case 'V':

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

   869           gst_pad_push_event (nuv->priv->src_video_pad,

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

   871               		GST_CLOCK_TIME_NONE, 0));

   872           break;

   873         case 'A':

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

   875           gst_pad_push_event (nuv->priv->src_audio_pad,

   876               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   877               		GST_CLOCK_TIME_NONE, 0));

   878           break;

   879         default:

   880           break;

   881       }

   882       goto done;

   883     }

   884     default:

   885       break;

   886   }

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

   889       /* pushing the buffer */

   890       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   891       ret = gst_pad_push (pad, buf);

   892       buf = NULL;

   894       if (ret != GST_FLOW_OK) {

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

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

   898             nuv->priv->last_video_return = ret;

   899         }

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

   901             nuv->priv->last_audio_return = ret;

   902         }

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

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

   906           ret = GST_FLOW_OK;

   907         } else {

   908 	  GST_WARNING_OBJECT (nuv, "error: on push");

   909 	}

   911       }

   912   }

   914 done:

   915   if (buf != NULL) {

   916       gst_buffer_unref (buf);

   917       buf = NULL;

   918   }

   919   if (ret == GST_FLOW_OK) {

   920      nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   922   }

   923   return ret;

   924 }

   926 static GstFlowReturn

   927 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   928 {

   929   GstFlowReturn ret = GST_FLOW_OK;

   931   /* ffmpeg extra data */

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

   933       &nuv->priv->mpeg_buffer);

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

   935     return ret;

   936   }

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

   939   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   940   return ret;

   941 }

   943 static GstFlowReturn

   944 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   945 {

   946   GstFlowReturn ret = GST_FLOW_OK;

   948   /* Load 'D' */

   949   nuv_frame_header h;

   951   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   952   if (ret != GST_FLOW_OK)

   953     return ret;

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

   956     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   957     return GST_FLOW_NOT_SUPPORTED;

   958   }

   960   if (h.i_length > 0) {

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

   962       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   963     } else {

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

   965       return GST_FLOW_NOT_SUPPORTED;

   966     }

   967   } else {

   968     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   969   }

   971   return ret;

   972 }

   974 static GstFlowReturn

   975 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   976 {

   977   GstFlowReturn ret = GST_FLOW_OK;

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

   980   if (ret != GST_FLOW_OK)

   981     return ret;

   983   gst_nuv_demux_create_pads (nuv);

   984   nuv->priv->state = GST_NUV_DEMUX_INDEX_CREATE;

   985   return ret;

   986 }

   988 static GstFlowReturn

   989 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   990 {

   991   GstBuffer *buf = NULL;

   992   GstFlowReturn res = GST_FLOW_OK;

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

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

   996     if (buf != NULL) {

   997       gst_buffer_unref (buf);

   998     }

   999     return res;

  1000   }

  1002   if (buf->data[0] == 'X') {

  1003     gst_buffer_unref (buf);

  1004     buf = NULL;

  1005     nuv_frame_header h;

  1007     res = gst_nuv_demux_frame_header_load (nuv, &h);

  1008     if (res != GST_FLOW_OK)

  1009       return res;

  1011     if (h.i_length != 512) {

  1012       return GST_FLOW_ERROR;

  1013     }

  1014     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

  1015   } else {

  1016     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

  1017     g_object_unref (buf);

  1018     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

  1019         (_("incomplete NUV support")), ("incomplete NUV support"));

  1020     return GST_FLOW_ERROR;

  1021   }

  1022   return res;

  1023 }

  1025 static void

  1026 gst_nuv_demux_create_seek_index (GstNuvDemux * nuv)

  1027 {

  1028   GstMessage *msg;

  1029   nuv_frame_header h;

  1030   g_debug ("CREATING INDEX");

  1032   while (gst_nuv_demux_frame_header_load (nuv, &h) == GST_FLOW_OK) {

  1033     if (h.i_keyframe == 0) {

  1034     //if (h.i_type == 'V') {

  1035       frame_index_data *f = g_new0 (frame_index_data, 1);

  1036       g_debug ("KEY FRAME AT %lld", nuv->priv->offset);

  1038       f->offset = nuv->priv->offset - 12;

  1039       f->timecode = h.i_timecode * GST_MSECOND;

  1041       nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1042     }

  1043     if (h.i_type != 'R') {

  1044       nuv->priv->offset += h.i_length;

  1045 		  if (h.i_type == 'A' || h.i_type == 'V')

  1046   		  nuv->priv->duration_time = h.i_timecode * GST_MSECOND;

  1047     }

  1048   }

  1049   g_debug ("CREATING INDEX: DONE : DURATION Bytes/Sec: %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT, nuv->priv->offset, nuv->priv->duration_time);

  1050   nuv->priv->duration_bytes = nuv->priv->offset;

  1051   nuv->priv->offset = nuv->priv->header_lengh;

  1053   msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_time);

  1054   gst_element_post_message (GST_ELEMENT (nuv), msg);

  1055 }

  1058 static GstFlowReturn

  1059 gst_nuv_demux_play (GstPad * pad)

  1060 {

  1061   GstFlowReturn res = GST_FLOW_OK;

  1062   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

  1064   switch (nuv->priv->state) {

  1065     case GST_NUV_DEMUX_START:

  1066       res = gst_nuv_demux_stream_file_header (nuv);

  1067       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1068         goto pause;

  1069       }

  1070       break;

  1072     case GST_NUV_DEMUX_HEADER_DATA:

  1073       res = gst_nuv_demux_stream_header_data (nuv);

  1074       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1075         goto pause;

  1076       }

  1077       break;

  1079     case GST_NUV_DEMUX_EXTRA_DATA:

  1080       res = gst_nuv_demux_stream_extra_data (nuv);

  1081       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1082         goto pause;

  1083       }

  1084       break;

  1086     case GST_NUV_DEMUX_MPEG_DATA:

  1087       res = gst_nuv_demux_stream_mpeg_data (nuv);

  1088       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1089         goto pause;

  1090       }

  1091       break;

  1093     case GST_NUV_DEMUX_EXTEND_HEADER:

  1094       res = gst_nuv_demux_stream_extend_header (nuv);

  1095       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1096         goto pause;

  1097       }

  1098       break;

  1100     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1101       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1102       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1103         goto pause;

  1104       }

  1105       //store file header size

  1106       nuv->priv->header_lengh = nuv->priv->offset;

  1107       break;

  1109     case GST_NUV_DEMUX_INDEX_CREATE:

  1110       if (nuv->priv->mode == NUV_PULL_MODE) {

  1111         gst_nuv_demux_create_seek_index (nuv);

  1112       }

  1113       nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1114       break;

  1116     case GST_NUV_DEMUX_FRAME_HEADER:

  1117       res = gst_nuv_demux_read_head_frame (nuv);

  1118       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1119         goto pause;

  1120       }

  1121       break;

  1123     case GST_NUV_DEMUX_MOVI:

  1124       res = gst_nuv_demux_stream_data (nuv);

  1125       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1126         goto pause;

  1127       }

  1128       break;

  1130     case GST_NUV_DEMUX_INVALID_DATA:

  1131       goto pause;

  1132       break;

  1133     default:

  1134       g_assert_not_reached ();

  1135   }

  1137   return GST_FLOW_OK;

  1139 pause:

  1140   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1141   gst_pad_pause_task (nuv->priv->sinkpad);

  1143   if (res == GST_FLOW_ERROR_EOS) {

  1144     g_debug ("EOS EOS EOS EOS EOS EOS");

  1145     gst_nuv_demux_send_eos (nuv);

  1146     nuv->priv->eos = TRUE;

  1147     res = GST_FLOW_OK;

  1148   }

  1150   if (GST_FLOW_IS_FATAL (res)) {

  1151     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1152         (_("Internal data stream error.")),

  1153         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1155     gst_nuv_demux_send_eos (nuv);

  1156   }

  1157   return res;

  1158 }

  1160 static void

  1161 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1162 {

  1163   gst_element_post_message (GST_ELEMENT (nuv),

  1164       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1166   if (nuv->priv->src_video_pad)

  1167     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1168   if (nuv->priv->src_audio_pad)

  1169     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1170 }

  1172 static GstFlowReturn

  1173 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1174     GstBuffer ** buffer)

  1175 {

  1176   GstFlowReturn ret = GST_FLOW_OK;

  1178   if (size == 0) {

  1179     return ret;

  1180   }

  1182   if (nuv->priv->mode == NUV_PULL_MODE) {

  1183     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1184     if (ret == GST_FLOW_OK) {

  1185       if (move) {

  1186         nuv->priv->offset += size;

  1187       }

  1188       /* got eos */

  1189     } else if (ret == GST_FLOW_UNEXPECTED) {

  1190       g_debug ("GOT EOS");

  1191       return GST_FLOW_ERROR_EOS;

  1192     }

  1193   } else {

  1194     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1195       nuv->priv->more_data = TRUE;

  1196       return GST_FLOW_ERROR_NO_DATA;

  1197     }

  1198     if (move) {

  1199       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1200     } else {

  1201       guint8 *data = NULL;

  1202       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1203       *buffer = gst_buffer_new ();

  1204       gst_buffer_set_data (*buffer, data, size);

  1205     }

  1206   }

  1207   return ret;

  1208 }

  1210 static gboolean

  1211 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1212 {

  1213   gboolean res = TRUE;

  1214   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1216   g_debug ("SINK ACTIVATE");

  1218   if (gst_pad_check_pull_range (sinkpad)) {

  1219     g_debug ("PULL");

  1220     gst_adapter_clear (nuv->priv->adapter);

  1221     res = gst_pad_activate_pull (sinkpad, TRUE);

  1222   } else {

  1223     g_debug ("PUSH");

  1224     gst_adapter_clear (nuv->priv->adapter);

  1225     res = gst_pad_activate_push (sinkpad, TRUE);

  1226   }

  1228   g_object_unref (nuv);

  1229   return res;

  1230 }

  1232 static gboolean

  1233 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1234 {

  1235   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1237   if (active) {

  1238     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1239     nuv->priv->mode = NUV_PULL_MODE;

  1240     gst_adapter_clear (nuv->priv->adapter);

  1242     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1243   } else {

  1244     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1245     g_debug ("STOP TASK");

  1246     gst_pad_stop_task (sinkpad);

  1247   }

  1248   gst_object_unref (nuv);

  1250   return TRUE;

  1251 }

  1253 static gboolean

  1254 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1255 {

  1256   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1258   if (active) {

  1259     nuv->priv->mode = NUV_PUSH_MODE;

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

  1262     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1263   } else {

  1264     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1265   }

  1267   gst_object_unref (nuv);

  1269   return TRUE;

  1270 }

  1272 static frame_index_data *

  1273 gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

  1274   gint64 segment_stop, GstFormat format)

  1275 {

  1276   GSList *l;

  1277   frame_index_data *ret = NULL;

  1279   if (nuv->priv->index == NULL) {

  1280     return NULL;

  1281   }

  1283   /* find keyframe closest to the requested position  */

  1284   for (l = nuv->priv->index; l != NULL; l = l->next) {

  1285     frame_index_data *f = (frame_index_data *) l->data;

  1286     gint64 pos = 0;

  1288     if (format == GST_FORMAT_BYTES) {

  1289       pos = f->offset;

  1290     } else if (format == GST_FORMAT_TIME) {

  1291       pos = f->timecode;

  1292     } else {

  1293       return NULL;

  1294     }

  1296 	  if (pos >= seek_pos) {

  1297   	  ret = f;

  1298     	break;

  1299     }

  1300     if ((segment_stop != -1) && (pos > segment_stop))

  1301       break;

  1302   }

  1304   return ret;

  1305 }

  1307 static gboolean

  1308 gst_nuv_demux_do_seek (GstNuvDemux *nuv, GstEvent * event)

  1309 {

  1310   gdouble rate;

  1311   GstFormat format;

  1312   GstSeekFlags flags;

  1313   GstSeekType cur_type;

  1314   gint64 cur;

  1315   GstSeekType stop_type;

  1316   gint64 stop;

  1317   gboolean flush;

  1318   frame_index_data *entry;

  1319   gint64 segment_start;

  1320   gint64 segment_stop;

  1321   GstEvent *newsegment_event;

  1324   g_debug ("DEMUX SEEK");

  1325   gst_event_parse_seek (event, &rate, &format, &flags,

  1326       &cur_type, &cur, &stop_type, &stop);

  1328 /*

  1329   if (format == GST_FORMAT_TIME) {

  1330     GST_DEBUG_OBJECT (nuv, "Can only seek on BYTES");

  1331     return FALSE;

  1332   }

  1333 */

  1335   if (rate <= 0.0) {

  1336     GST_DEBUG_OBJECT (nuv, "Can only seek with positive rate");

  1337     return FALSE;

  1338   }

  1340   if (cur_type == GST_SEEK_TYPE_SET) {

  1341     GST_OBJECT_LOCK (nuv);

  1342     if (gst_nuv_demux_do_seek_index (nuv, cur, -1, format) == NULL) {

  1343       GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1344       GST_OBJECT_UNLOCK (nuv);

  1345       return FALSE;

  1346     }

  1347     GST_OBJECT_UNLOCK (nuv);

  1348   }

  1349   flush = !!(flags & GST_SEEK_FLAG_FLUSH);

  1351   if (flush) {

  1352     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_start ());

  1353     if (nuv->priv->src_video_pad != NULL) {

  1354       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_start ());

  1355     }

  1357     if (nuv->priv->src_audio_pad != NULL) {

  1358       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_start ());

  1359     }

  1360   }

  1361   else {

  1362 	  gst_pad_pause_task (nuv->priv->sinkpad);

  1363   }

  1365   GST_PAD_STREAM_LOCK (nuv->priv->sinkpad);

  1366   GST_OBJECT_LOCK (nuv);

  1369   if (cur == GST_CLOCK_TIME_NONE)

  1370     cur = 0;

  1371   if (stop == GST_CLOCK_TIME_NONE)

  1372     stop = nuv->priv->duration_time;

  1374   if (cur_type == GST_SEEK_TYPE_SET)

  1375     segment_start = cur;

  1376   else if (cur_type == GST_SEEK_TYPE_CUR)

  1377     segment_start = nuv->priv->segment_start + cur;

  1378   else

  1379     segment_start = nuv->priv->segment_start;

  1381   if (stop_type == GST_SEEK_TYPE_SET)

  1382     segment_stop = stop;

  1383   else if (stop_type == GST_SEEK_TYPE_CUR)

  1384     segment_stop = nuv->priv->segment_stop + stop;

  1385   else

  1386     segment_stop = nuv->priv->segment_stop;

  1388   segment_start = CLAMP (segment_start, 0, nuv->priv->duration_time);

  1389   segment_stop = CLAMP (segment_stop, 0, nuv->priv->duration_time);

  1391   entry = gst_nuv_demux_do_seek_index (nuv, segment_start,

  1392       segment_stop, format);

  1394   if (entry == NULL) {

  1395     GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1396     goto seek_error;

  1397   }

  1399   g_debug ("found frame at %lld", entry->offset);

  1401   segment_start = entry->timecode;

  1403   nuv->priv->segment_start = segment_start;

  1404   nuv->priv->segment_stop = segment_stop;

  1406   GST_OBJECT_UNLOCK (nuv);

  1408   if (!nuv->priv->eos) {

  1409     GstMessage *msg;

  1410     msg = gst_message_new_segment_start (GST_OBJECT (nuv), GST_FORMAT_TIME,

  1411       nuv->priv->segment_start);

  1413     gst_element_post_message (GST_ELEMENT (nuv), msg);

  1414   }

  1417   g_debug ("NEW SEGMENT START %" G_GUINT64_FORMAT ", STOP %" G_GUINT64_FORMAT, segment_start, segment_stop);

  1418   newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1419     GST_FORMAT_TIME, segment_start, segment_stop, segment_start);

  1422   if (flush) {

  1423     if (nuv->priv->src_video_pad != NULL) {

  1424       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_stop ());

  1425     }

  1427     if (nuv->priv->src_audio_pad != NULL) {

  1428       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_stop ());

  1429     }

  1431     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_stop ());

  1432   }

  1435   if (nuv->priv->src_video_pad != NULL) {

  1436     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_ref (newsegment_event));

  1437   }

  1438   if (nuv->priv->src_audio_pad != NULL) {

  1439     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_ref (newsegment_event));

  1440   }

  1442   gst_event_unref (newsegment_event);

  1444   g_debug ("STARTING TASK AGAIN");

  1445   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1446   nuv->priv->offset = entry->offset;

  1448   gst_pad_start_task (nuv->priv->sinkpad, (GstTaskFunction) gst_nuv_demux_loop,

  1449       nuv->priv->sinkpad);

  1451   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1452   return TRUE;

  1454 seek_error:

  1455   GST_DEBUG_OBJECT (nuv, "Got a seek error");

  1456   GST_OBJECT_UNLOCK (nuv);

  1457   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1458   return FALSE;

  1460 }

  1462 static gboolean

  1463 gst_nuv_demux_srcpad_event (GstPad * pad, GstEvent * event)

  1464 {

  1465   gboolean res = FALSE;

  1466   GstNuvDemux *nuv;

  1468   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1470   switch (GST_EVENT_TYPE (event)) {

  1471     case GST_EVENT_SEEK:

  1472       g_debug ("SEEK");

  1473       res = gst_nuv_demux_do_seek (nuv, event);

  1474       break;

  1475     default:

  1476       res = FALSE;

  1477       break;

  1478   }

  1480   gst_object_unref (nuv);

  1481   return res;

  1482 }

  1484 static GstFlowReturn

  1485 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1486 {

  1487   GstFlowReturn ret = GST_FLOW_OK;

  1488   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1490   if (nuv->priv->mode != NUV_PUSH_MODE)

  1491     return ret;

  1493   g_debug ("CHAIN ADP %p", nuv->priv->adapter);

  1495   gst_adapter_push (nuv->priv->adapter, buf);

  1497   while ((ret == GST_FLOW_OK) && (nuv->priv->more_data == FALSE)) {

  1498       ret = gst_nuv_demux_play (pad);

  1499   }

  1501   nuv->priv->more_data = FALSE;

  1502   gst_object_unref (nuv);

  1504   g_debug ("CHAIN END");

  1506   return ret;

  1507 }

  1509 static void

  1510 gst_nuv_demux_loop (GstPad * pad)

  1511 {

  1512   gst_nuv_demux_play (pad);

  1513 }

  1515 static void

  1516 gst_nuv_demux_index_free (gpointer data, gpointer user_data)

  1517 {

  1518   g_free (data);

  1519 }

  1521 static void

  1522 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1523 {

  1524   g_debug ("RESET");

  1525   nuv->priv->more_data = FALSE;

  1526   nuv->priv->state = GST_NUV_DEMUX_START;

  1527   nuv->priv->mode = NUV_PUSH_MODE;

  1528   nuv->priv->offset = 0;

  1529   nuv->priv->time_start = 0;

  1530   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1531   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1532   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1533   nuv->priv->last_video_return = GST_FLOW_OK;

  1534   nuv->priv->last_audio_return = GST_FLOW_OK;

  1535   nuv->priv->header_lengh = 0;

  1536   nuv->priv->segment_stop = GST_CLOCK_TIME_NONE;

  1537   nuv->priv->segment_start = GST_CLOCK_TIME_NONE;

  1539   //clear index list

  1540   g_slist_foreach (nuv->priv->index, gst_nuv_demux_index_free, NULL);

  1541   g_slist_free (nuv->priv->index);

  1542   nuv->priv->index = NULL;

  1544   gst_adapter_clear (nuv->priv->adapter);

  1546   if (nuv->priv->mpeg_buffer != NULL) {

  1547     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1548     nuv->priv->mpeg_buffer = NULL;

  1549   }

  1550 }

  1552 static void

  1553 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1554 {

  1555   if (nuv->priv->src_video_pad) {

  1556     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1557     nuv->priv->src_video_pad = NULL;

  1558   }

  1560   if (nuv->priv->src_audio_pad) {

  1561     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1562     nuv->priv->src_audio_pad = NULL;

  1563   }

  1564 }

  1566 static GstStateChangeReturn

  1567 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1568 {

  1569   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1571   switch (transition) {

  1572     case GST_STATE_CHANGE_NULL_TO_READY:

  1573 	g_debug ("NULL_TO_READY");

  1574       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1575       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1576       break;

  1577     default:

  1578       break;

  1579   }

  1581   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1582   if (ret == GST_STATE_CHANGE_FAILURE) {

  1583     goto done;

  1584   }

  1586   switch (transition) {

  1587     case GST_STATE_CHANGE_PAUSED_TO_READY:

  1588     case GST_STATE_CHANGE_READY_TO_NULL:

  1589       g_debug ("PAUSED_TO_READY");

  1590       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1591       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1592       break;

  1593     default:

  1594       break;

  1595   }

  1597 done:

  1598   return ret;

  1599 }

  1601 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1602 GstBuffer *

  1603 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1604 {

  1605   GstBuffer *buffer;

  1606   GstBuffer *cur;

  1607   guint8 *data;

  1609   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1610   g_return_val_if_fail (nbytes > 0, NULL);

  1612   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1614   /* we don't have enough data, return NULL. This is unlikely

  1615    * as one usually does an _available() first instead of peeking a

  1616    * random size. */

  1617   if (G_UNLIKELY (nbytes > adapter->size))

  1618     return NULL;

  1620   /* our head buffer has enough data left, return it */

  1621   cur = adapter->buflist->data;

  1622   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1623     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1624         nbytes);

  1625     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1627     gst_adapter_flush (adapter, nbytes);

  1629     return buffer;

  1630   }

  1632   data = gst_adapter_take (adapter, nbytes);

  1633   if (data == NULL)

  1634     return NULL;

  1636   buffer = gst_buffer_new ();

  1637   GST_BUFFER_DATA (buffer) = data;

  1638   GST_BUFFER_MALLOCDATA (buffer) = data;

  1639   GST_BUFFER_SIZE (buffer) = nbytes;

  1641   return buffer;

  1642 }

  1643 #endif

  1646 static gboolean

  1647 plugin_init (GstPlugin * plugin)

  1648 {

  1649 #ifdef ENABLE_NLS

  1650   setlocale (LC_ALL, "");

  1651   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1652 #endif /* ENABLE_NLS */

  1654   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1655           GST_TYPE_NUV_DEMUX)) {

  1656     return FALSE;

  1657   }

  1658   return TRUE;

  1659 }

  1661 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1662     GST_VERSION_MINOR,

  1663     "nuvdemux",

  1664     "Demuxes and muxes audio and video",

  1665      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	leo_sobral
	Fri Mar 23 14:34:50 2007 +0000 (2007-03-23)
branch	trunk
changeset 441	f310d1d086b5
parent 432	ebaf693e0058
child 442	db17a60b9b42
permissions	-rw-r--r--