gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@f9330272e09d

     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);

   283 static void gst_nuv_demux_store_keyframe (GstNuvDemux * nuv, nuv_frame_header *h);

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

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

   288 #endif

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

   293 /******************************************************************************

   294  * Utils function

   295  ******************************************************************************/

   296 #if G_BYTE_ORDER == G_BIG_ENDIAN

   297 static inline gdouble

   298 _gdouble_swap_le_be (gdouble * d)

   299 {

   300   union

   301   {

   302     guint64 i;

   303     gdouble d;

   304   } u;

   306   u.d = *d;

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

   308   return u.d;

   309 }

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

   312 #else /* G_BYTE_ORDER != G_BIG_ENDIAN */

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

   314 #endif /* G_BYTE_ORDER != G_BIG_ENDIAN */

   316 static void

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

   318 {

   319     if (in == 29.97) {

   320         *num = 30000;

   321         *denom = 1001;

   322     } else if (in == 23.976) {

   323         *num = 24000;

   324         *denom = 1001;

   325     } else {

   326         *denom = 1;

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

   328             *denom *= 10;

   329             in *= 10.0;

   330         }

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

   332     }

   333 }

   335 /* GObject Functions */

   337 static void

   338 gst_nuv_demux_base_init (gpointer klass)

   339 {

   340   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

   342   gst_element_class_add_pad_template (element_class,

   343       gst_static_pad_template_get (&audio_src_template));

   345   gst_element_class_add_pad_template (element_class,

   346       gst_static_pad_template_get (&video_src_template));

   348   gst_element_class_add_pad_template (element_class,

   349       gst_static_pad_template_get (&sink_template));

   350   gst_element_class_set_details (element_class, &gst_nuv_demux_details);

   351 }

   353 static void

   354 gst_nuv_demux_class_init (GstNuvDemuxClass * klass)

   355 {

   356   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);

   357   GObjectClass *gobject_class = (GObjectClass *) klass;

   359   GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",

   360       0, "Demuxer for NUV streams");

   362   parent_class = g_type_class_peek_parent (klass);

   364   gobject_class->dispose = gst_nuv_demux_dispose;

   365   gobject_class->finalize = gst_nuv_demux_finalize;

   366   gstelement_class->change_state = gst_nuv_demux_change_state;

   368   g_type_class_add_private (gobject_class, sizeof (GstNuvDemuxPrivate));

   369 }

   371 static void

   372 gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)

   373 {

   374   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

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

   377   /* creating adapter */

   378   nuv->priv->mode = NUV_PUSH_MODE;

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

   381   nuv->priv->new_audio_segment = TRUE;

   382   nuv->priv->new_video_segment = TRUE;

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

   385   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   386       gst_nuv_demux_sink_activate_pull);

   387   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   388       gst_nuv_demux_sink_activate_push);

   389   gst_pad_set_chain_function (nuv->priv->sinkpad,

   390       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   391 /*

   392   gst_pad_set_event_function (nuv->priv->sinkpad,

   393       gst_nuv_demux_sink_event);

   394 */

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

   398 }

   400 static void

   401 gst_nuv_demux_dispose (GObject * object)

   402 {

   403   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

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

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

   408   }

   410   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   411   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   415   }

   416 }

   418 static void

   419 gst_nuv_demux_finalize (GObject * object)

   420 {

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

   422 }

   425 /* HeaderLoad:

   426  */

   427 static GstFlowReturn

   428 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header *h)

   429 {

   430   GstBuffer *buffer = NULL;

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

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

   434       goto done;

   435   }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   453   GST_DEBUG_OBJECT (nuv,

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

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

   456       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   457       h->i_keyframe_distance);

   459 done:

   460   if (buffer != NULL) {

   461      gst_buffer_unref (buffer);

   462      buffer = NULL;

   463   }

   464   return res;

   465 }

   467 static GstFlowReturn

   468 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   469 {

   470   GstFlowReturn res;

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

   473   if (res == GST_FLOW_OK)

   474     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   475   return res;

   476 }

   478 /*

   479  * Read NUV file tag

   480  */

   481 static GstFlowReturn

   482 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   483 {

   484   GstFlowReturn res = GST_FLOW_OK;

   485   GstBuffer *file_header = NULL;

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

   488   if (res == GST_FLOW_OK) {

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

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

   491       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   492     } else {

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

   494       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   495       res = GST_FLOW_ERROR;

   496     }

   497   }

   499   if (file_header != NULL) {

   500     gst_buffer_unref (file_header);

   501     file_header = NULL;

   502   }

   503   return res;

   504 }

   506 /* FrameHeaderLoad:

   507  */

   508 static GstFlowReturn

   509 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header *h)

   510 {

   511   unsigned char *data;

   512   GstBuffer *buf = NULL;

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

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

   517       goto done;

   518   }

   520   data = buf->data;

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

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

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

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

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

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

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

   530       h->i_type,

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

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

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

   535 done:

   536   if (buf != NULL) {

   537       gst_buffer_unref (buf);

   538       buf = NULL;

   539   }

   541   return res;

   542 }

   544 static GstFlowReturn

   545 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   546     nuv_extended_header * h)

   547 {

   548   unsigned char *data;

   549   GstBuffer *buff = NULL;

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

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

   554       goto done;

   555   }

   557   data = buff->data;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   576   GST_DEBUG_OBJECT (nuv,

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

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

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

   580       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   581       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   582       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

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

   584       h->i_keyframe_adjust_offset);

   586 done:

   587   if (buff != NULL) {

   588     gst_buffer_unref (buff);

   589     buff = NULL;

   590   }

   591   return res;

   592 }

   595 /* Query Functions */

   596 static const GstQueryType *

   597 gst_nuv_demux_get_src_query_types (GstPad * pad)

   598 {

   599   static const GstQueryType src_types[] = {

   600     GST_QUERY_POSITION,

   601     GST_QUERY_DURATION,

   602     0

   603   };

   605   return src_types;

   606 }

   608 static gboolean

   609 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   610 {

   611   gboolean res = FALSE;

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

   614   switch (GST_QUERY_TYPE (query)) {

   615     case GST_QUERY_POSITION:

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

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

   618         res = TRUE;

   619       }

   620       break;

   621     case GST_QUERY_DURATION:

   622       {

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

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

   625 	    res = TRUE;

   626         }

   627       }

   628       break;

   629     default:

   630       res = FALSE;

   631       break;

   632   }

   634   gst_object_unref (nuv);

   636   return res;

   637 }

   639 static GstPad*

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

   641 {

   642     GstPad *pad = NULL;

   643     pad = gst_pad_new_from_static_template (template, name);

   644     gst_pad_set_caps (pad, caps);

   645     gst_pad_set_active (pad, TRUE);

   646     gst_pad_use_fixed_caps (pad);

   647     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   649     gst_pad_set_event_function (pad,

   650       GST_DEBUG_FUNCPTR (gst_nuv_demux_srcpad_event));

   652     gst_pad_set_query_type_function (pad,

   653       GST_DEBUG_FUNCPTR (gst_nuv_demux_get_src_query_types));

   655     gst_pad_set_query_function (pad,

   656       GST_DEBUG_FUNCPTR (gst_nuv_demux_handle_src_query));

   659     return pad;

   660 }

   662 static void

   663 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   664 {

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

   666     GstCaps *video_caps = NULL;

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

   669         "divxversion", G_TYPE_INT, 4,

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

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

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

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

   674         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   678     gst_caps_unref (video_caps);

   679   }

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

   682     GstCaps *audio_caps = NULL;

   684     audio_caps = gst_caps_new_simple ("audio/mpeg",

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

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

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

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

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

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

   692     gst_caps_unref (audio_caps);

   693   }

   695   gst_element_no_more_pads (GST_ELEMENT (nuv));

   696 }

   698 static gboolean

   699 gst_nuv_demux_validate_header (nuv_frame_header *h)

   700 {

   701   gboolean valid = FALSE;

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

   703   //g_usleep (1 * G_USEC_PER_SEC );

   704   switch  (h->i_type) {

   705 /*

   706     case 'V':

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

   708           h->i_compression == 1 ||

   709           h->i_compression == 2 ||

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

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

   712          valid = TRUE;

   713       }

   714       break;

   715     case 'A':

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

   717           h->i_compression == 1 ||

   718           h->i_compression == 2 ||

   719           h->i_compression == 3 ||

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

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

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

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

   724          valid = TRUE;

   725       }

   726       break;

   727     case 'S':

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

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

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

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

   732          valid = TRUE;

   733       }

   734       break;

   735 */

   736     case 'A':

   737     case 'V':

   738     case 'S':

   739     case 'R':

   740     case 'D':

   741     case 'Q':

   742       valid  = TRUE;

   743       break;

   744     default:

   745       valid = FALSE;

   746   }

   748   return valid;

   749 }

   751 static GstFlowReturn

   752 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   753 {

   754   GstFlowReturn ret = GST_FLOW_OK;

   755   gboolean valid = FALSE;

   757   do {

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

   759     if (ret != GST_FLOW_OK) {

   760       return ret;

   761     }

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

   764       valid = TRUE;

   766   } while (valid == FALSE);

   768   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   769   return ret;

   770 }

   772 static gboolean

   773 gst_nuv_combine_flow (GstNuvDemux *nuv)

   774 {

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

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

   778     if ((ret_video != GST_FLOW_OK) &&

   779         (ret_audio != GST_FLOW_OK))

   780         return FALSE;

   782     if (GST_FLOW_IS_FATAL (ret_video))

   783         return FALSE;

   785     if (GST_FLOW_IS_FATAL (ret_audio))

   786         return FALSE;

   788     return TRUE;

   789 }

   791 static GstFlowReturn

   792 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   793 {

   794   GstFlowReturn ret = GST_FLOW_OK;

   795   GstPad *pad = NULL;

   796   guint64 timestamp;

   797   GstBuffer *buf = NULL;

   798   nuv_frame_header h;

   800   h = nuv->priv->fh;

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

   803     goto done;

   805   if (h.i_length > 0) {

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

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

   808       goto done;

   809     }

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

   812       h.i_timecode = 0;

   813       //goto done;

   814     }

   816     timestamp = h.i_timecode * GST_MSECOND;

   817     GST_BUFFER_TIMESTAMP (buf) = timestamp;

   818   }

   819   else {

   820     goto done;

   821   }

   824   switch (h.i_type) {

   825     case 'V':

   826     {

   827       pad = nuv->priv->src_video_pad;

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

   831         /* send new segment event*/

   832         gst_pad_push_event (nuv->priv->src_video_pad,

   833           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   834                                      GST_CLOCK_TIME_NONE, 0));

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

   837             nuv->priv->time_start = timestamp;

   838         }

   839         nuv->priv->new_video_segment = FALSE;

   840       }

   842       break;

   843     }

   844     case 'A':

   845     {

   846       pad = nuv->priv->src_audio_pad;

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

   849         /* send new segment event*/

   850         gst_pad_push_event (nuv->priv->src_audio_pad,

   851           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   852                                      GST_CLOCK_TIME_NONE, 0));

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

   855             nuv->priv->time_start = timestamp;

   856         }

   857         nuv->priv->new_audio_segment = FALSE;

   858       }

   860       break;

   861     }

   862     case 'S':

   863    {

   864       switch (h.i_compression) {

   865         case 'V':

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

   867           gst_pad_push_event (nuv->priv->src_video_pad,

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

   869               		GST_CLOCK_TIME_NONE, 0));

   870           break;

   871         case 'A':

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

   873           gst_pad_push_event (nuv->priv->src_audio_pad,

   874               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   875               		GST_CLOCK_TIME_NONE, 0));

   876           break;

   877         default:

   878           break;

   879       }

   880       goto done;

   881     }

   882     default:

   883       break;

   884   }

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

   887       /* pushing the buffer */

   888       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   889       ret = gst_pad_push (pad, buf);

   890       buf = NULL;

   892       if (ret != GST_FLOW_OK) {

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

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

   896             nuv->priv->last_video_return = ret;

   897         }

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

   899             nuv->priv->last_audio_return = ret;

   900         }

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

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

   904           ret = GST_FLOW_OK;

   905         } else {

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

   907 	}

   909       }

   910   }

   912 done:

   913   if (buf != NULL) {

   914       gst_buffer_unref (buf);

   915       buf = NULL;

   916   }

   917   if (ret == GST_FLOW_OK) {

   918      nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   920   }

   921   return ret;

   922 }

   924 static GstFlowReturn

   925 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   926 {

   927   GstFlowReturn ret = GST_FLOW_OK;

   929   /* ffmpeg extra data */

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

   931       &nuv->priv->mpeg_buffer);

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

   933     return ret;

   934   }

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

   937   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   938   return ret;

   939 }

   941 static GstFlowReturn

   942 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   943 {

   944   GstFlowReturn ret = GST_FLOW_OK;

   946   /* Load 'D' */

   947   nuv_frame_header h;

   949   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   950   if (ret != GST_FLOW_OK)

   951     return ret;

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

   954     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   955     return GST_FLOW_NOT_SUPPORTED;

   956   }

   958   if (h.i_length > 0) {

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

   960       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   961     } else {

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

   963       return GST_FLOW_NOT_SUPPORTED;

   964     }

   965   } else {

   966     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   967   }

   969   return ret;

   970 }

   972 static GstFlowReturn

   973 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   974 {

   975   GstFlowReturn ret = GST_FLOW_OK;

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

   978   if (ret != GST_FLOW_OK)

   979     return ret;

   981   gst_nuv_demux_create_pads (nuv);

   982   nuv->priv->state = GST_NUV_DEMUX_INDEX_CREATE;

   983   return ret;

   984 }

   986 static GstFlowReturn

   987 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   988 {

   989   GstBuffer *buf = NULL;

   990   GstFlowReturn res = GST_FLOW_OK;

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

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

   994     if (buf != NULL) {

   995       gst_buffer_unref (buf);

   996     }

   997     return res;

   998   }

  1000   if (buf->data[0] == 'X') {

  1001     gst_buffer_unref (buf);

  1002     buf = NULL;

  1003     nuv_frame_header h;

  1005     res = gst_nuv_demux_frame_header_load (nuv, &h);

  1006     if (res != GST_FLOW_OK)

  1007       return res;

  1009     if (h.i_length != 512) {

  1010       return GST_FLOW_ERROR;

  1011     }

  1012     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

  1013   } else {

  1014     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

  1015     g_object_unref (buf);

  1016     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

  1017         (_("incomplete NUV support")), ("incomplete NUV support"));

  1018     return GST_FLOW_ERROR;

  1019   }

  1020   return res;

  1021 }

  1023 static void

  1024 gst_nuv_demux_create_seek_index (GstNuvDemux * nuv)

  1025 {

  1026   GstMessage *msg;

  1027   nuv_frame_header h;

  1029   while (gst_nuv_demux_frame_header_load (nuv, &h) == GST_FLOW_OK) {

  1030     if ((h.i_type == 'V') && (h.i_keyframe == 0)) {

  1031       frame_index_data *f = g_new0 (frame_index_data, 1);

  1033       f->offset = nuv->priv->offset - 12;

  1034       f->timecode = h.i_timecode * GST_MSECOND;

  1036       nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1037     }

  1038     if (h.i_type != 'R') {

  1039       nuv->priv->offset += h.i_length;

  1040 		  if (h.i_type == 'A' || h.i_type == 'V')

  1041   		  nuv->priv->duration_time = h.i_timecode * GST_MSECOND;

  1042     }

  1043   }

  1044   GST_DEBUG_OBJECT  (nuv, "CREATING INDEX: DONE : DURATION Bytes/Sec: %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,

  1045     nuv->priv->offset, nuv->priv->duration_time);

  1047   nuv->priv->duration_bytes = nuv->priv->offset;

  1048   nuv->priv->offset = nuv->priv->header_lengh;

  1050   msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_time);

  1051   gst_element_post_message (GST_ELEMENT (nuv), msg);

  1052 }

  1055 static void

  1056 gst_nuv_demux_store_keyframe (GstNuvDemux * nuv, nuv_frame_header *h)

  1057 {

  1058    if ((h->i_type == 'V') && (h->i_keyframe == 0)) {

  1059       GSList *lst = g_slist_last (nuv->priv->index);

  1060       if (lst != NULL) {

  1061           frame_index_data *d = (frame_index_data *) lst->data;

  1062           if (d->timecode < h->i_timecode) {

  1063               frame_index_data *f = g_new0 (frame_index_data, 1);

  1064               f->offset = nuv->priv->offset - 12;

  1065               f->timecode = h->i_timecode * GST_MSECOND;

  1066               nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1067           }

  1068       }

  1069    }

  1070 }

  1073 static GstFlowReturn

  1074 gst_nuv_demux_play (GstPad * pad)

  1075 {

  1076   GstFlowReturn res = GST_FLOW_OK;

  1077   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

  1079   switch (nuv->priv->state) {

  1080     case GST_NUV_DEMUX_START:

  1081       res = gst_nuv_demux_stream_file_header (nuv);

  1082       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1083         goto pause;

  1084       }

  1085       break;

  1087     case GST_NUV_DEMUX_HEADER_DATA:

  1088       res = gst_nuv_demux_stream_header_data (nuv);

  1089       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1090         goto pause;

  1091       }

  1092       break;

  1094     case GST_NUV_DEMUX_EXTRA_DATA:

  1095       res = gst_nuv_demux_stream_extra_data (nuv);

  1096       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1097         goto pause;

  1098       }

  1099       break;

  1101     case GST_NUV_DEMUX_MPEG_DATA:

  1102       res = gst_nuv_demux_stream_mpeg_data (nuv);

  1103       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1104         goto pause;

  1105       }

  1106       break;

  1108     case GST_NUV_DEMUX_EXTEND_HEADER:

  1109       res = gst_nuv_demux_stream_extend_header (nuv);

  1110       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1111         goto pause;

  1112       }

  1113       break;

  1115     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1116       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1117       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1118         goto pause;

  1119       }

  1120       //store file header size

  1121       nuv->priv->header_lengh = nuv->priv->offset;

  1122       break;

  1124     case GST_NUV_DEMUX_INDEX_CREATE:

  1125       if (nuv->priv->mode == NUV_PULL_MODE) {

  1126         gst_nuv_demux_create_seek_index (nuv);

  1127       }

  1128       nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1129       break;

  1131     case GST_NUV_DEMUX_FRAME_HEADER:

  1132       res = gst_nuv_demux_read_head_frame (nuv);

  1133       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1134         goto pause;

  1135       }

  1136       gst_nuv_demux_store_keyframe (nuv, &nuv->priv->fh);

  1137       break;

  1139     case GST_NUV_DEMUX_MOVI:

  1140       res = gst_nuv_demux_stream_data (nuv);

  1141       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1142         goto pause;

  1143       }

  1144       break;

  1146     case GST_NUV_DEMUX_INVALID_DATA:

  1147       goto pause;

  1148       break;

  1149     default:

  1150       g_assert_not_reached ();

  1151   }

  1153   return GST_FLOW_OK;

  1155 pause:

  1156   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1157   gst_pad_pause_task (nuv->priv->sinkpad);

  1159   if (res == GST_FLOW_ERROR_EOS) {

  1160     gst_nuv_demux_send_eos (nuv);

  1161     nuv->priv->eos = TRUE;

  1162     res = GST_FLOW_OK;

  1163   }

  1165   if (GST_FLOW_IS_FATAL (res)) {

  1166     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1167         (_("Internal data stream error.")),

  1168         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1170     gst_nuv_demux_send_eos (nuv);

  1171   }

  1172   return res;

  1173 }

  1175 static void

  1176 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1177 {

  1178   gst_element_post_message (GST_ELEMENT (nuv),

  1179       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1181   if (nuv->priv->src_video_pad)

  1182     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1183   if (nuv->priv->src_audio_pad)

  1184     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1185 }

  1187 static GstFlowReturn

  1188 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1189     GstBuffer ** buffer)

  1190 {

  1191   GstFlowReturn ret = GST_FLOW_OK;

  1193   if (size == 0) {

  1194     return ret;

  1195   }

  1197   if (nuv->priv->mode == NUV_PULL_MODE) {

  1198     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1199     if (ret == GST_FLOW_OK) {

  1200       if (move) {

  1201         nuv->priv->offset += size;

  1202       }

  1203       /* got eos */

  1204     } else if (ret == GST_FLOW_UNEXPECTED) {

  1205       return GST_FLOW_ERROR_EOS;

  1206     }

  1207   } else {

  1208     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1209       nuv->priv->more_data = TRUE;

  1210       return GST_FLOW_ERROR_NO_DATA;

  1211     }

  1212     if (move) {

  1213       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1214     } else {

  1215       guint8 *data = NULL;

  1216       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1217       *buffer = gst_buffer_new ();

  1218       gst_buffer_set_data (*buffer, data, size);

  1219     }

  1220   }

  1221   return ret;

  1222 }

  1224 static gboolean

  1225 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1226 {

  1227   gboolean res = TRUE;

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

  1230   if (gst_pad_check_pull_range (sinkpad)) {

  1231     gst_adapter_clear (nuv->priv->adapter);

  1232     res = gst_pad_activate_pull (sinkpad, TRUE);

  1233   } else {

  1234     gst_adapter_clear (nuv->priv->adapter);

  1235     res = gst_pad_activate_push (sinkpad, TRUE);

  1236   }

  1238   g_object_unref (nuv);

  1239   return res;

  1240 }

  1242 static gboolean

  1243 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1244 {

  1245   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1247   if (active) {

  1248     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1249     nuv->priv->mode = NUV_PULL_MODE;

  1250     gst_adapter_clear (nuv->priv->adapter);

  1252     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1253   } else {

  1254     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1255     gst_pad_stop_task (sinkpad);

  1256   }

  1257   gst_object_unref (nuv);

  1259   return TRUE;

  1260 }

  1262 static gboolean

  1263 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1264 {

  1265   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1267   if (active) {

  1268     nuv->priv->mode = NUV_PUSH_MODE;

  1269     gst_adapter_clear (nuv->priv->adapter);

  1271     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1272   } else {

  1273     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1274   }

  1276   gst_object_unref (nuv);

  1278   return TRUE;

  1279 }

  1281 static frame_index_data *

  1282 gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

  1283   gint64 segment_stop, GstFormat format)

  1284 {

  1285   GSList *l;

  1286   frame_index_data *ret = NULL;

  1288   if (nuv->priv->index == NULL) {

  1289     return NULL;

  1290   }

  1292   /* find keyframe closest to the requested position  */

  1293   for (l = nuv->priv->index; l != NULL; l = l->next) {

  1294     frame_index_data *f = (frame_index_data *) l->data;

  1295     gint64 pos = 0;

  1297     if (format == GST_FORMAT_BYTES) {

  1298       pos = f->offset;

  1299     } else if (format == GST_FORMAT_TIME) {

  1300       pos = f->timecode;

  1301     } else {

  1302       return NULL;

  1303     }

  1305 	  if (pos >= seek_pos) {

  1306   	  ret = f;

  1307     	break;

  1308     }

  1309     if ((segment_stop != -1) && (pos > segment_stop))

  1310       break;

  1311   }

  1313   return ret;

  1314 }

  1316 static gboolean

  1317 gst_nuv_demux_do_seek (GstNuvDemux *nuv, GstEvent * event)

  1318 {

  1319   gdouble rate;

  1320   GstFormat format;

  1321   GstSeekFlags flags;

  1322   GstSeekType cur_type;

  1323   gint64 cur;

  1324   GstSeekType stop_type;

  1325   gint64 stop;

  1326   gboolean flush;

  1327   frame_index_data *entry;

  1328   gint64 segment_start;

  1329   gint64 segment_stop;

  1330   GstEvent *newsegment_event;

  1332   if (nuv->priv->eos) {

  1333     return FALSE;

  1334   }

  1337   gst_event_parse_seek (event, &rate, &format, &flags,

  1338       &cur_type, &cur, &stop_type, &stop);

  1342 /*

  1343   if (format == GST_FORMAT_TIME) {

  1344     GST_DEBUG_OBJECT (nuv, "Can only seek on BYTES");

  1345     return FALSE;

  1346   }

  1347 */

  1349   if (rate <= 0.0) {

  1350     GST_DEBUG_OBJECT (nuv, "Can only seek with positive rate");

  1351     return FALSE;

  1352   }

  1354   if (cur_type == GST_SEEK_TYPE_SET) {

  1355     GST_OBJECT_LOCK (nuv);

  1356     if (gst_nuv_demux_do_seek_index (nuv, cur, -1, format) == NULL) {

  1357       GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1358       GST_OBJECT_UNLOCK (nuv);

  1359       return FALSE;

  1360     }

  1361     GST_OBJECT_UNLOCK (nuv);

  1362   }

  1363   flush = !!(flags & GST_SEEK_FLAG_FLUSH);

  1365   if (flush) {

  1366     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_start ());

  1367     if (nuv->priv->src_video_pad != NULL) {

  1368       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_start ());

  1369     }

  1371     if (nuv->priv->src_audio_pad != NULL) {

  1372       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_start ());

  1373     }

  1374   }

  1375   else {

  1376 	  gst_pad_pause_task (nuv->priv->sinkpad);

  1377   }

  1379   GST_PAD_STREAM_LOCK (nuv->priv->sinkpad);

  1380   GST_OBJECT_LOCK (nuv);

  1383   if (cur == GST_CLOCK_TIME_NONE)

  1384     cur = 0;

  1385   if (stop == GST_CLOCK_TIME_NONE)

  1386     stop = nuv->priv->duration_time;

  1388   if (cur_type == GST_SEEK_TYPE_SET)

  1389     segment_start = cur;

  1390   else if (cur_type == GST_SEEK_TYPE_CUR)

  1391     segment_start = nuv->priv->segment_start + cur;

  1392   else

  1393     segment_start = nuv->priv->segment_start;

  1395   if (stop_type == GST_SEEK_TYPE_SET)

  1396     segment_stop = stop;

  1397   else if (stop_type == GST_SEEK_TYPE_CUR)

  1398     segment_stop = nuv->priv->segment_stop + stop;

  1399   else

  1400     segment_stop = nuv->priv->segment_stop;

  1402   segment_start = CLAMP (segment_start, 0, nuv->priv->duration_time);

  1403   segment_stop = CLAMP (segment_stop, 0, nuv->priv->duration_time);

  1405   entry = gst_nuv_demux_do_seek_index (nuv, segment_start,

  1406       segment_stop, format);

  1408   if (entry == NULL) {

  1409     GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1410     goto seek_error;

  1411   }

  1413   segment_start = entry->timecode;

  1415   nuv->priv->segment_start = segment_start;

  1416   nuv->priv->segment_stop = segment_stop;

  1418   GST_OBJECT_UNLOCK (nuv);

  1420   if (!nuv->priv->eos) {

  1421     GstMessage *msg;

  1422     msg = gst_message_new_segment_start (GST_OBJECT (nuv), GST_FORMAT_TIME,

  1423       nuv->priv->segment_start);

  1425     gst_element_post_message (GST_ELEMENT (nuv), msg);

  1426   }

  1429   GST_DEBUG_OBJECT (nuv, "NEW SEGMENT START %" G_GUINT64_FORMAT ", STOP %" G_GUINT64_FORMAT,

  1430     segment_start, segment_stop);

  1431   newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1432     GST_FORMAT_TIME, segment_start, segment_stop, segment_start);

  1435   if (flush) {

  1436     if (nuv->priv->src_video_pad != NULL) {

  1437       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_stop ());

  1438     }

  1440     if (nuv->priv->src_audio_pad != NULL) {

  1441       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_stop ());

  1442     }

  1444     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_stop ());

  1445   }

  1448   if (nuv->priv->src_video_pad != NULL) {

  1449     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_ref (newsegment_event));

  1450   }

  1451   if (nuv->priv->src_audio_pad != NULL) {

  1452     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_ref (newsegment_event));

  1453   }

  1455   gst_event_unref (newsegment_event);

  1457   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1458   nuv->priv->offset = entry->offset;

  1460   gst_pad_start_task (nuv->priv->sinkpad, (GstTaskFunction) gst_nuv_demux_loop,

  1461       nuv->priv->sinkpad);

  1463   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1464   return TRUE;

  1466 seek_error:

  1467   GST_DEBUG_OBJECT (nuv, "Got a seek error");

  1468   GST_OBJECT_UNLOCK (nuv);

  1469   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1470   return FALSE;

  1472 }

  1474 static gboolean

  1475 gst_nuv_demux_srcpad_event (GstPad * pad, GstEvent * event)

  1476 {

  1477   gboolean res = FALSE;

  1478   GstNuvDemux *nuv;

  1480   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1482   switch (GST_EVENT_TYPE (event)) {

  1483     case GST_EVENT_SEEK:

  1484       res = gst_nuv_demux_do_seek (nuv, event);

  1485       break;

  1486     default:

  1487       res = FALSE;

  1488       break;

  1489   }

  1491   gst_object_unref (nuv);

  1492   return res;

  1493 }

  1495 static GstFlowReturn

  1496 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1497 {

  1498   GstFlowReturn ret = GST_FLOW_OK;

  1499   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1501   if (nuv->priv->mode != NUV_PUSH_MODE)

  1502     return ret;

  1504   gst_adapter_push (nuv->priv->adapter, buf);

  1506   while ((ret == GST_FLOW_OK) && (nuv->priv->more_data == FALSE)) {

  1507       ret = gst_nuv_demux_play (pad);

  1508   }

  1510   nuv->priv->more_data = FALSE;

  1511   gst_object_unref (nuv);

  1513   return ret;

  1514 }

  1516 static void

  1517 gst_nuv_demux_loop (GstPad * pad)

  1518 {

  1519   gst_nuv_demux_play (pad);

  1520 }

  1522 static void

  1523 gst_nuv_demux_index_free (gpointer data, gpointer user_data)

  1524 {

  1525   g_free (data);

  1526 }

  1528 static void

  1529 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1530 {

  1531   nuv->priv->eos = FALSE;

  1532   nuv->priv->more_data = FALSE;

  1533   nuv->priv->state = GST_NUV_DEMUX_START;

  1534   nuv->priv->mode = NUV_PUSH_MODE;

  1535   nuv->priv->offset = 0;

  1536   nuv->priv->time_start = 0;

  1537   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1538   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1539   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1540   nuv->priv->last_video_return = GST_FLOW_OK;

  1541   nuv->priv->last_audio_return = GST_FLOW_OK;

  1542   nuv->priv->header_lengh = 0;

  1543   nuv->priv->segment_stop = GST_CLOCK_TIME_NONE;

  1544   nuv->priv->segment_start = GST_CLOCK_TIME_NONE;

  1546   //clear index list

  1547   g_slist_foreach (nuv->priv->index, gst_nuv_demux_index_free, NULL);

  1548   g_slist_free (nuv->priv->index);

  1549   nuv->priv->index = NULL;

  1551   gst_adapter_clear (nuv->priv->adapter);

  1553   if (nuv->priv->mpeg_buffer != NULL) {

  1554     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1555     nuv->priv->mpeg_buffer = NULL;

  1556   }

  1557 }

  1559 static void

  1560 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1561 {

  1562   if (nuv->priv->src_video_pad) {

  1563     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1564     nuv->priv->src_video_pad = NULL;

  1565   }

  1567   if (nuv->priv->src_audio_pad) {

  1568     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1569     nuv->priv->src_audio_pad = NULL;

  1570   }

  1571 }

  1573 static GstStateChangeReturn

  1574 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1575 {

  1576   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1578   switch (transition) {

  1579     case GST_STATE_CHANGE_NULL_TO_READY:

  1580       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1581       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1582       break;

  1583     default:

  1584       break;

  1585   }

  1587   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1588   if (ret == GST_STATE_CHANGE_FAILURE) {

  1589     goto done;

  1590   }

  1592   switch (transition) {

  1593     case GST_STATE_CHANGE_READY_TO_NULL:

  1594       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1595       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1596       break;

  1597     default:

  1598       break;

  1599   }

  1601 done:

  1602   return ret;

  1603 }

  1605 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1606 GstBuffer *

  1607 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1608 {

  1609   GstBuffer *buffer;

  1610   GstBuffer *cur;

  1611   guint8 *data;

  1613   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1614   g_return_val_if_fail (nbytes > 0, NULL);

  1616   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1618   /* we don't have enough data, return NULL. This is unlikely

  1619    * as one usually does an _available() first instead of peeking a

  1620    * random size. */

  1621   if (G_UNLIKELY (nbytes > adapter->size))

  1622     return NULL;

  1624   /* our head buffer has enough data left, return it */

  1625   cur = adapter->buflist->data;

  1626   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1627     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1628         nbytes);

  1629     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1631     gst_adapter_flush (adapter, nbytes);

  1633     return buffer;

  1634   }

  1636   data = gst_adapter_take (adapter, nbytes);

  1637   if (data == NULL)

  1638     return NULL;

  1640   buffer = gst_buffer_new ();

  1641   GST_BUFFER_DATA (buffer) = data;

  1642   GST_BUFFER_MALLOCDATA (buffer) = data;

  1643   GST_BUFFER_SIZE (buffer) = nbytes;

  1645   return buffer;

  1646 }

  1647 #endif

  1650 static gboolean

  1651 plugin_init (GstPlugin * plugin)

  1652 {

  1653 #ifdef ENABLE_NLS

  1654   setlocale (LC_ALL, "");

  1655   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1656 #endif /* ENABLE_NLS */

  1658   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1659           GST_TYPE_NUV_DEMUX)) {

  1660     return FALSE;

  1661   }

  1662   return TRUE;

  1663 }

  1665 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1666     GST_VERSION_MINOR,

  1667     "nuvdemux",

  1668     "Demuxes and muxes audio and video",

  1669      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	renatofilho
	Mon Apr 02 16:02:03 2007 +0100 (2007-04-02)
branch	trunk
changeset 476	f9330272e09d
parent 442	db17a60b9b42
child 477	88bf59e8da5f
permissions	-rw-r--r--