gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@1eff6a1f7263

     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   nuv->priv->new_audio_segment = TRUE;

   381   nuv->priv->new_video_segment = TRUE;

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

   384   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   385       gst_nuv_demux_sink_activate_pull);

   386   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   387       gst_nuv_demux_sink_activate_push);

   388   gst_pad_set_chain_function (nuv->priv->sinkpad,

   389       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   390 /*

   391   gst_pad_set_event_function (nuv->priv->sinkpad,

   392       gst_nuv_demux_sink_event);

   393 */

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

   397 }

   399 static void

   400 gst_nuv_demux_dispose (GObject * object)

   401 {

   402   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

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

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

   407   }

   409   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   410   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   414   }

   415 }

   417 static void

   418 gst_nuv_demux_finalize (GObject * object)

   419 {

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

   421 }

   424 /* HeaderLoad:

   425  */

   426 static GstFlowReturn

   427 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header *h)

   428 {

   429   GstBuffer *buffer = NULL;

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

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

   433       goto done;

   434   }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   452   GST_DEBUG_OBJECT (nuv,

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

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

   455       h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   456       h->i_keyframe_distance);

   458 done:

   459   if (buffer != NULL) {

   460      gst_buffer_unref (buffer);

   461      buffer = NULL;

   462   }

   463   return res;

   464 }

   466 static GstFlowReturn

   467 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   468 {

   469   GstFlowReturn res;

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

   472   if (res == GST_FLOW_OK)

   473     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   474   return res;

   475 }

   477 /*

   478  * Read NUV file tag

   479  */

   480 static GstFlowReturn

   481 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   482 {

   483   GstFlowReturn res = GST_FLOW_OK;

   484   GstBuffer *file_header = NULL;

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

   487   if (res == GST_FLOW_OK) {

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

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

   490       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   491     } else {

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

   493       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   494       res = GST_FLOW_ERROR;

   495     }

   496   }

   498   if (file_header != NULL) {

   499     gst_buffer_unref (file_header);

   500     file_header = NULL;

   501   }

   502   return res;

   503 }

   505 /* FrameHeaderLoad:

   506  */

   507 static GstFlowReturn

   508 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header *h)

   509 {

   510   unsigned char *data;

   511   GstBuffer *buf = NULL;

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

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

   516       goto done;

   517   }

   519   data = buf->data;

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

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

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

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

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

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

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

   529       h->i_type,

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

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

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

   534 done:

   535   if (buf != NULL) {

   536       gst_buffer_unref (buf);

   537       buf = NULL;

   538   }

   540   return res;

   541 }

   543 static GstFlowReturn

   544 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   545     nuv_extended_header * h)

   546 {

   547   unsigned char *data;

   548   GstBuffer *buff = NULL;

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

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

   553       goto done;

   554   }

   556   data = buff->data;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   575   GST_DEBUG_OBJECT (nuv,

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

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

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

   579       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   580       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   581       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

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

   583       h->i_keyframe_adjust_offset);

   585 done:

   586   if (buff != NULL) {

   587     gst_buffer_unref (buff);

   588     buff = NULL;

   589   }

   590   return res;

   591 }

   594 /* Query Functions */

   595 static const GstQueryType *

   596 gst_nuv_demux_get_src_query_types (GstPad * pad)

   597 {

   598   static const GstQueryType src_types[] = {

   599     GST_QUERY_POSITION,

   600     GST_QUERY_DURATION,

   601     0

   602   };

   604   return src_types;

   605 }

   607 static gboolean

   608 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   609 {

   610   gboolean res = FALSE;

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

   613   switch (GST_QUERY_TYPE (query)) {

   614     case GST_QUERY_POSITION:

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

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

   617         res = TRUE;

   618       }

   619       break;

   620     case GST_QUERY_DURATION:

   621       {

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

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

   624 	    res = TRUE;

   625         }

   626       }

   627       break;

   628     default:

   629       res = FALSE;

   630       break;

   631   }

   633   gst_object_unref (nuv);

   635   return res;

   636 }

   638 static GstPad*

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

   640 {

   641     GstPad *pad = NULL;

   642     pad = gst_pad_new_from_static_template (template, name);

   643     gst_pad_set_caps (pad, caps);

   644     gst_pad_set_active (pad, TRUE);

   645     gst_pad_use_fixed_caps (pad);

   646     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   648     gst_pad_set_event_function (pad,

   649       GST_DEBUG_FUNCPTR (gst_nuv_demux_srcpad_event));

   651     gst_pad_set_query_type_function (pad,

   652       GST_DEBUG_FUNCPTR (gst_nuv_demux_get_src_query_types));

   654     gst_pad_set_query_function (pad,

   655       GST_DEBUG_FUNCPTR (gst_nuv_demux_handle_src_query));

   658     return pad;

   659 }

   661 static void

   662 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   663 {

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

   665     GstCaps *video_caps = NULL;

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

   668         "divxversion", G_TYPE_INT, 4,

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

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

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

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

   673         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   677     gst_caps_unref (video_caps);

   678   }

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

   681     GstCaps *audio_caps = NULL;

   683     audio_caps = gst_caps_new_simple ("audio/mpeg",

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

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

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

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

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

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

   691     gst_caps_unref (audio_caps);

   692   }

   694   gst_element_no_more_pads (GST_ELEMENT (nuv));

   695 }

   697 static gboolean

   698 gst_nuv_demux_validate_header (nuv_frame_header *h)

   699 {

   700   gboolean valid = FALSE;

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

   702   //g_usleep (1 * G_USEC_PER_SEC );

   703   switch  (h->i_type) {

   704 /*

   705     case 'V':

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

   707           h->i_compression == 1 ||

   708           h->i_compression == 2 ||

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

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

   711          valid = TRUE;

   712       }

   713       break;

   714     case 'A':

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

   716           h->i_compression == 1 ||

   717           h->i_compression == 2 ||

   718           h->i_compression == 3 ||

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

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

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

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

   723          valid = TRUE;

   724       }

   725       break;

   726     case 'S':

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

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

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

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

   731          valid = TRUE;

   732       }

   733       break;

   734 */

   735     case 'A':

   736     case 'V':

   737     case 'S':

   738     case 'R':

   739     case 'D':

   740     case 'Q':

   741       valid  = TRUE;

   742       break;

   743     default:

   744       valid = FALSE;

   745   }

   747   return valid;

   748 }

   750 static GstFlowReturn

   751 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   752 {

   753   GstFlowReturn ret = GST_FLOW_OK;

   754   gboolean valid = FALSE;

   756   do {

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

   758     if (ret != GST_FLOW_OK) {

   759       return ret;

   760     }

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

   763       valid = TRUE;

   765   } while (valid == FALSE);

   767   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   768   return ret;

   769 }

   771 static gboolean

   772 gst_nuv_combine_flow (GstNuvDemux *nuv)

   773 {

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

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

   777     if ((ret_video != GST_FLOW_OK) &&

   778         (ret_audio != GST_FLOW_OK))

   779         return FALSE;

   781     if (GST_FLOW_IS_FATAL (ret_video))

   782         return FALSE;

   784     if (GST_FLOW_IS_FATAL (ret_audio))

   785         return FALSE;

   787     return TRUE;

   788 }

   790 static GstFlowReturn

   791 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   792 {

   793   GstFlowReturn ret = GST_FLOW_OK;

   794   GstPad *pad = NULL;

   795   guint64 timestamp;

   796   GstBuffer *buf = NULL;

   797   nuv_frame_header h;

   799   h = nuv->priv->fh;

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

   802     goto done;

   804   if (h.i_length > 0) {

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

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

   807       goto done;

   808     }

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

   811       h.i_timecode = 0;

   812       //goto done;

   813     }

   815     timestamp = h.i_timecode * GST_MSECOND;

   816     GST_BUFFER_TIMESTAMP (buf) = timestamp;

   817   }

   818   else {

   819     goto done;

   820   }

   823   switch (h.i_type) {

   824     case 'V':

   825     {

   826       pad = nuv->priv->src_video_pad;

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

   830         /* send new segment event*/

   831         gst_pad_push_event (nuv->priv->src_video_pad,

   832           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   833                                      GST_CLOCK_TIME_NONE, 0));

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

   836             nuv->priv->time_start = timestamp;

   837         }

   838         nuv->priv->new_video_segment = FALSE;

   839       }

   841       break;

   842     }

   843     case 'A':

   844     {

   845       pad = nuv->priv->src_audio_pad;

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

   848         /* send new segment event*/

   849         gst_pad_push_event (nuv->priv->src_audio_pad,

   850           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   851                                      GST_CLOCK_TIME_NONE, 0));

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

   854             nuv->priv->time_start = timestamp;

   855         }

   856         nuv->priv->new_audio_segment = FALSE;

   857       }

   859       break;

   860     }

   861     case 'S':

   862    {

   863       switch (h.i_compression) {

   864         case 'V':

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

   866           gst_pad_push_event (nuv->priv->src_video_pad,

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

   868               		GST_CLOCK_TIME_NONE, 0));

   869           break;

   870         case 'A':

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

   872           gst_pad_push_event (nuv->priv->src_audio_pad,

   873               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   874               		GST_CLOCK_TIME_NONE, 0));

   875           break;

   876         default:

   877           break;

   878       }

   879       goto done;

   880     }

   881     default:

   882       break;

   883   }

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

   886       /* pushing the buffer */

   887       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   888       ret = gst_pad_push (pad, buf);

   889       buf = NULL;

   891       if (ret != GST_FLOW_OK) {

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

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

   895             nuv->priv->last_video_return = ret;

   896         }

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

   898             nuv->priv->last_audio_return = ret;

   899         }

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

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

   903           ret = GST_FLOW_OK;

   904         } else {

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

   906 	}

   908       }

   909   }

   911 done:

   912   if (buf != NULL) {

   913       gst_buffer_unref (buf);

   914       buf = NULL;

   915   }

   916   if (ret == GST_FLOW_OK) {

   917      nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   919   }

   920   return ret;

   921 }

   923 static GstFlowReturn

   924 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   925 {

   926   GstFlowReturn ret = GST_FLOW_OK;

   928   /* ffmpeg extra data */

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

   930       &nuv->priv->mpeg_buffer);

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

   932     return ret;

   933   }

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

   936   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   937   return ret;

   938 }

   940 static GstFlowReturn

   941 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   942 {

   943   GstFlowReturn ret = GST_FLOW_OK;

   945   /* Load 'D' */

   946   nuv_frame_header h;

   948   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   949   if (ret != GST_FLOW_OK)

   950     return ret;

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

   953     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   954     return GST_FLOW_NOT_SUPPORTED;

   955   }

   957   if (h.i_length > 0) {

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

   959       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   960     } else {

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

   962       return GST_FLOW_NOT_SUPPORTED;

   963     }

   964   } else {

   965     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   966   }

   968   return ret;

   969 }

   971 static GstFlowReturn

   972 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   973 {

   974   GstFlowReturn ret = GST_FLOW_OK;

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

   977   if (ret != GST_FLOW_OK)

   978     return ret;

   980   gst_nuv_demux_create_pads (nuv);

   981   nuv->priv->state = GST_NUV_DEMUX_INDEX_CREATE;

   982   return ret;

   983 }

   985 static GstFlowReturn

   986 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   987 {

   988   GstBuffer *buf = NULL;

   989   GstFlowReturn res = GST_FLOW_OK;

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

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

   993     if (buf != NULL) {

   994       gst_buffer_unref (buf);

   995     }

   996     return res;

   997   }

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

  1000     gst_buffer_unref (buf);

  1001     buf = NULL;

  1002     nuv_frame_header h;

  1004     res = gst_nuv_demux_frame_header_load (nuv, &h);

  1005     if (res != GST_FLOW_OK)

  1006       return res;

  1008     if (h.i_length != 512) {

  1009       return GST_FLOW_ERROR;

  1010     }

  1011     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

  1012   } else {

  1013     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

  1014     g_object_unref (buf);

  1015     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

  1016         (_("incomplete NUV support")), ("incomplete NUV support"));

  1017     return GST_FLOW_ERROR;

  1018   }

  1019   return res;

  1020 }

  1022 static void

  1023 gst_nuv_demux_create_seek_index (GstNuvDemux * nuv)

  1024 {

  1025   GstMessage *msg;

  1026   nuv_frame_header h;

  1028   while (gst_nuv_demux_frame_header_load (nuv, &h) == GST_FLOW_OK) {

  1029     if ((h.i_type == 'V') && (h.i_keyframe == 0)) {

  1030       frame_index_data *f = g_new0 (frame_index_data, 1);

  1032       f->offset = nuv->priv->offset - 12;

  1033       f->timecode = h.i_timecode * GST_MSECOND;

  1035       nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1036     }

  1037     if (h.i_type != 'R') {

  1038       nuv->priv->offset += h.i_length;

  1039 		  if (h.i_type == 'A' || h.i_type == 'V')

  1040   		  nuv->priv->duration_time = h.i_timecode * GST_MSECOND;

  1041     }

  1042   }

  1043   GST_DEBUG_OBJECT  (nuv, "CREATING INDEX: DONE : DURATION Bytes/Sec: %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,

  1044     nuv->priv->offset, nuv->priv->duration_time);

  1046   nuv->priv->duration_bytes = nuv->priv->offset;

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

  1049   msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_time);

  1050   gst_element_post_message (GST_ELEMENT (nuv), msg);

  1051 }

  1054 static GstFlowReturn

  1055 gst_nuv_demux_play (GstPad * pad)

  1056 {

  1057   GstFlowReturn res = GST_FLOW_OK;

  1058   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

  1060   switch (nuv->priv->state) {

  1061     case GST_NUV_DEMUX_START:

  1062       res = gst_nuv_demux_stream_file_header (nuv);

  1063       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1064         goto pause;

  1065       }

  1066       break;

  1068     case GST_NUV_DEMUX_HEADER_DATA:

  1069       res = gst_nuv_demux_stream_header_data (nuv);

  1070       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1071         goto pause;

  1072       }

  1073       break;

  1075     case GST_NUV_DEMUX_EXTRA_DATA:

  1076       res = gst_nuv_demux_stream_extra_data (nuv);

  1077       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1078         goto pause;

  1079       }

  1080       break;

  1082     case GST_NUV_DEMUX_MPEG_DATA:

  1083       res = gst_nuv_demux_stream_mpeg_data (nuv);

  1084       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1085         goto pause;

  1086       }

  1087       break;

  1089     case GST_NUV_DEMUX_EXTEND_HEADER:

  1090       res = gst_nuv_demux_stream_extend_header (nuv);

  1091       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1092         goto pause;

  1093       }

  1094       break;

  1096     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1097       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1098       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1099         goto pause;

  1100       }

  1101       //store file header size

  1102       nuv->priv->header_lengh = nuv->priv->offset;

  1103       break;

  1105     case GST_NUV_DEMUX_INDEX_CREATE:

  1106       if (nuv->priv->mode == NUV_PULL_MODE) {

  1107         gst_nuv_demux_create_seek_index (nuv);

  1108       }

  1109       nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1110       break;

  1112     case GST_NUV_DEMUX_FRAME_HEADER:

  1113       res = gst_nuv_demux_read_head_frame (nuv);

  1114       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1115         goto pause;

  1116       }

  1117       break;

  1119     case GST_NUV_DEMUX_MOVI:

  1120       res = gst_nuv_demux_stream_data (nuv);

  1121       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1122         goto pause;

  1123       }

  1124       break;

  1126     case GST_NUV_DEMUX_INVALID_DATA:

  1127       goto pause;

  1128       break;

  1129     default:

  1130       g_assert_not_reached ();

  1131   }

  1133   return GST_FLOW_OK;

  1135 pause:

  1136   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1137   gst_pad_pause_task (nuv->priv->sinkpad);

  1139   if (res == GST_FLOW_ERROR_EOS) {

  1140     gst_nuv_demux_send_eos (nuv);

  1141     nuv->priv->eos = TRUE;

  1142     res = GST_FLOW_OK;

  1143   }

  1145   if (GST_FLOW_IS_FATAL (res)) {

  1146     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1147         (_("Internal data stream error.")),

  1148         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1150     gst_nuv_demux_send_eos (nuv);

  1151   }

  1152   return res;

  1153 }

  1155 static void

  1156 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1157 {

  1158   gst_element_post_message (GST_ELEMENT (nuv),

  1159       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1161   if (nuv->priv->src_video_pad)

  1162     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1163   if (nuv->priv->src_audio_pad)

  1164     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1165 }

  1167 static GstFlowReturn

  1168 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1169     GstBuffer ** buffer)

  1170 {

  1171   GstFlowReturn ret = GST_FLOW_OK;

  1173   if (size == 0) {

  1174     return ret;

  1175   }

  1177   if (nuv->priv->mode == NUV_PULL_MODE) {

  1178     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1179     if (ret == GST_FLOW_OK) {

  1180       if (move) {

  1181         nuv->priv->offset += size;

  1182       }

  1183       /* got eos */

  1184     } else if (ret == GST_FLOW_UNEXPECTED) {

  1185       return GST_FLOW_ERROR_EOS;

  1186     }

  1187   } else {

  1188     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1189       nuv->priv->more_data = TRUE;

  1190       return GST_FLOW_ERROR_NO_DATA;

  1191     }

  1192     if (move) {

  1193       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1194     } else {

  1195       guint8 *data = NULL;

  1196       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1197       *buffer = gst_buffer_new ();

  1198       gst_buffer_set_data (*buffer, data, size);

  1199     }

  1200   }

  1201   return ret;

  1202 }

  1204 static gboolean

  1205 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1206 {

  1207   gboolean res = TRUE;

  1208   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1210   if (gst_pad_check_pull_range (sinkpad)) {

  1211     gst_adapter_clear (nuv->priv->adapter);

  1212     res = gst_pad_activate_pull (sinkpad, TRUE);

  1213   } else {

  1214     gst_adapter_clear (nuv->priv->adapter);

  1215     res = gst_pad_activate_push (sinkpad, TRUE);

  1216   }

  1218   g_object_unref (nuv);

  1219   return res;

  1220 }

  1222 static gboolean

  1223 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1224 {

  1225   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1227   if (active) {

  1228     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1229     nuv->priv->mode = NUV_PULL_MODE;

  1230     gst_adapter_clear (nuv->priv->adapter);

  1232     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1233   } else {

  1234     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1235     gst_pad_stop_task (sinkpad);

  1236   }

  1237   gst_object_unref (nuv);

  1239   return TRUE;

  1240 }

  1242 static gboolean

  1243 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1244 {

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

  1247   if (active) {

  1248     nuv->priv->mode = NUV_PUSH_MODE;

  1249     gst_adapter_clear (nuv->priv->adapter);

  1251     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1252   } else {

  1253     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1254   }

  1256   gst_object_unref (nuv);

  1258   return TRUE;

  1259 }

  1261 static frame_index_data *

  1262 gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

  1263   gint64 segment_stop, GstFormat format)

  1264 {

  1265   GSList *l;

  1266   frame_index_data *ret = NULL;

  1268   if (nuv->priv->index == NULL) {

  1269     return NULL;

  1270   }

  1272   /* find keyframe closest to the requested position  */

  1273   for (l = nuv->priv->index; l != NULL; l = l->next) {

  1274     frame_index_data *f = (frame_index_data *) l->data;

  1275     gint64 pos = 0;

  1277     if (format == GST_FORMAT_BYTES) {

  1278       pos = f->offset;

  1279     } else if (format == GST_FORMAT_TIME) {

  1280       pos = f->timecode;

  1281     } else {

  1282       return NULL;

  1283     }

  1285 	  if (pos >= seek_pos) {

  1286   	  ret = f;

  1287     	break;

  1288     }

  1289     if ((segment_stop != -1) && (pos > segment_stop))

  1290       break;

  1291   }

  1293   return ret;

  1294 }

  1296 static gboolean

  1297 gst_nuv_demux_do_seek (GstNuvDemux *nuv, GstEvent * event)

  1298 {

  1299   gdouble rate;

  1300   GstFormat format;

  1301   GstSeekFlags flags;

  1302   GstSeekType cur_type;

  1303   gint64 cur;

  1304   GstSeekType stop_type;

  1305   gint64 stop;

  1306   gboolean flush;

  1307   frame_index_data *entry;

  1308   gint64 segment_start;

  1309   gint64 segment_stop;

  1310   GstEvent *newsegment_event;

  1312   if (nuv->priv->eos) {

  1313     return FALSE;

  1314   }

  1317   gst_event_parse_seek (event, &rate, &format, &flags,

  1318       &cur_type, &cur, &stop_type, &stop);

  1322 /*

  1323   if (format == GST_FORMAT_TIME) {

  1324     GST_DEBUG_OBJECT (nuv, "Can only seek on BYTES");

  1325     return FALSE;

  1326   }

  1327 */

  1329   if (rate <= 0.0) {

  1330     GST_DEBUG_OBJECT (nuv, "Can only seek with positive rate");

  1331     return FALSE;

  1332   }

  1334   if (cur_type == GST_SEEK_TYPE_SET) {

  1335     GST_OBJECT_LOCK (nuv);

  1336     if (gst_nuv_demux_do_seek_index (nuv, cur, -1, format) == NULL) {

  1337       GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1338       GST_OBJECT_UNLOCK (nuv);

  1339       return FALSE;

  1340     }

  1341     GST_OBJECT_UNLOCK (nuv);

  1342   }

  1343   flush = !!(flags & GST_SEEK_FLAG_FLUSH);

  1345   if (flush) {

  1346     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_start ());

  1347     if (nuv->priv->src_video_pad != NULL) {

  1348       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_start ());

  1349     }

  1351     if (nuv->priv->src_audio_pad != NULL) {

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

  1353     }

  1354   }

  1355   else {

  1356 	  gst_pad_pause_task (nuv->priv->sinkpad);

  1357   }

  1359   GST_PAD_STREAM_LOCK (nuv->priv->sinkpad);

  1360   GST_OBJECT_LOCK (nuv);

  1363   if (cur == GST_CLOCK_TIME_NONE)

  1364     cur = 0;

  1365   if (stop == GST_CLOCK_TIME_NONE)

  1366     stop = nuv->priv->duration_time;

  1368   if (cur_type == GST_SEEK_TYPE_SET)

  1369     segment_start = cur;

  1370   else if (cur_type == GST_SEEK_TYPE_CUR)

  1371     segment_start = nuv->priv->segment_start + cur;

  1372   else

  1373     segment_start = nuv->priv->segment_start;

  1375   if (stop_type == GST_SEEK_TYPE_SET)

  1376     segment_stop = stop;

  1377   else if (stop_type == GST_SEEK_TYPE_CUR)

  1378     segment_stop = nuv->priv->segment_stop + stop;

  1379   else

  1380     segment_stop = nuv->priv->segment_stop;

  1382   segment_start = CLAMP (segment_start, 0, nuv->priv->duration_time);

  1383   segment_stop = CLAMP (segment_stop, 0, nuv->priv->duration_time);

  1385   entry = gst_nuv_demux_do_seek_index (nuv, segment_start,

  1386       segment_stop, format);

  1388   if (entry == NULL) {

  1389     GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1390     goto seek_error;

  1391   }

  1393   segment_start = entry->timecode;

  1395   nuv->priv->segment_start = segment_start;

  1396   nuv->priv->segment_stop = segment_stop;

  1398   GST_OBJECT_UNLOCK (nuv);

  1400   if (!nuv->priv->eos) {

  1401     GstMessage *msg;

  1402     msg = gst_message_new_segment_start (GST_OBJECT (nuv), GST_FORMAT_TIME,

  1403       nuv->priv->segment_start);

  1405     gst_element_post_message (GST_ELEMENT (nuv), msg);

  1406   }

  1409   GST_DEBUG_OBJECT (nuv, "NEW SEGMENT START %" G_GUINT64_FORMAT ", STOP %" G_GUINT64_FORMAT,

  1410     segment_start, segment_stop);

  1411   newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1412     GST_FORMAT_TIME, segment_start, segment_stop, segment_start);

  1415   if (flush) {

  1416     if (nuv->priv->src_video_pad != NULL) {

  1417       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_stop ());

  1418     }

  1420     if (nuv->priv->src_audio_pad != NULL) {

  1421       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_stop ());

  1422     }

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

  1425   }

  1428   if (nuv->priv->src_video_pad != NULL) {

  1429     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_ref (newsegment_event));

  1430   }

  1431   if (nuv->priv->src_audio_pad != NULL) {

  1432     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_ref (newsegment_event));

  1433   }

  1435   gst_event_unref (newsegment_event);

  1437   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1438   nuv->priv->offset = entry->offset;

  1440   gst_pad_start_task (nuv->priv->sinkpad, (GstTaskFunction) gst_nuv_demux_loop,

  1441       nuv->priv->sinkpad);

  1443   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1444   return TRUE;

  1446 seek_error:

  1447   GST_DEBUG_OBJECT (nuv, "Got a seek error");

  1448   GST_OBJECT_UNLOCK (nuv);

  1449   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1450   return FALSE;

  1452 }

  1454 static gboolean

  1455 gst_nuv_demux_srcpad_event (GstPad * pad, GstEvent * event)

  1456 {

  1457   gboolean res = FALSE;

  1458   GstNuvDemux *nuv;

  1460   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1462   switch (GST_EVENT_TYPE (event)) {

  1463     case GST_EVENT_SEEK:

  1464       res = gst_nuv_demux_do_seek (nuv, event);

  1465       break;

  1466     default:

  1467       res = FALSE;

  1468       break;

  1469   }

  1471   gst_object_unref (nuv);

  1472   return res;

  1473 }

  1475 static GstFlowReturn

  1476 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1477 {

  1478   GstFlowReturn ret = GST_FLOW_OK;

  1479   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1481   if (nuv->priv->mode != NUV_PUSH_MODE)

  1482     return ret;

  1484   gst_adapter_push (nuv->priv->adapter, buf);

  1486   while ((ret == GST_FLOW_OK) && (nuv->priv->more_data == FALSE)) {

  1487       ret = gst_nuv_demux_play (pad);

  1488   }

  1490   nuv->priv->more_data = FALSE;

  1491   gst_object_unref (nuv);

  1493   return ret;

  1494 }

  1496 static void

  1497 gst_nuv_demux_loop (GstPad * pad)

  1498 {

  1499   gst_nuv_demux_play (pad);

  1500 }

  1502 static void

  1503 gst_nuv_demux_index_free (gpointer data, gpointer user_data)

  1504 {

  1505   g_free (data);

  1506 }

  1508 static void

  1509 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1510 {

  1511   nuv->priv->eos = FALSE;

  1512   nuv->priv->more_data = FALSE;

  1513   nuv->priv->state = GST_NUV_DEMUX_START;

  1514   nuv->priv->mode = NUV_PUSH_MODE;

  1515   nuv->priv->offset = 0;

  1516   nuv->priv->time_start = 0;

  1517   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1518   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1519   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1520   nuv->priv->last_video_return = GST_FLOW_OK;

  1521   nuv->priv->last_audio_return = GST_FLOW_OK;

  1522   nuv->priv->header_lengh = 0;

  1523   nuv->priv->segment_stop = GST_CLOCK_TIME_NONE;

  1524   nuv->priv->segment_start = GST_CLOCK_TIME_NONE;

  1526   //clear index list

  1527   g_slist_foreach (nuv->priv->index, gst_nuv_demux_index_free, NULL);

  1528   g_slist_free (nuv->priv->index);

  1529   nuv->priv->index = NULL;

  1531   gst_adapter_clear (nuv->priv->adapter);

  1533   if (nuv->priv->mpeg_buffer != NULL) {

  1534     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1535     nuv->priv->mpeg_buffer = NULL;

  1536   }

  1537 }

  1539 static void

  1540 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1541 {

  1542   if (nuv->priv->src_video_pad) {

  1543     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1544     nuv->priv->src_video_pad = NULL;

  1545   }

  1547   if (nuv->priv->src_audio_pad) {

  1548     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1549     nuv->priv->src_audio_pad = NULL;

  1550   }

  1551 }

  1553 static GstStateChangeReturn

  1554 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1555 {

  1556   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1558   switch (transition) {

  1559     case GST_STATE_CHANGE_NULL_TO_READY:

  1560       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1561       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1562       break;

  1563     default:

  1564       break;

  1565   }

  1567   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1568   if (ret == GST_STATE_CHANGE_FAILURE) {

  1569     goto done;

  1570   }

  1572   switch (transition) {

  1573     case GST_STATE_CHANGE_READY_TO_NULL:

  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 done:

  1582   return ret;

  1583 }

  1585 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1586 GstBuffer *

  1587 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1588 {

  1589   GstBuffer *buffer;

  1590   GstBuffer *cur;

  1591   guint8 *data;

  1593   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1594   g_return_val_if_fail (nbytes > 0, NULL);

  1596   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1598   /* we don't have enough data, return NULL. This is unlikely

  1599    * as one usually does an _available() first instead of peeking a

  1600    * random size. */

  1601   if (G_UNLIKELY (nbytes > adapter->size))

  1602     return NULL;

  1604   /* our head buffer has enough data left, return it */

  1605   cur = adapter->buflist->data;

  1606   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1607     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1608         nbytes);

  1609     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1611     gst_adapter_flush (adapter, nbytes);

  1613     return buffer;

  1614   }

  1616   data = gst_adapter_take (adapter, nbytes);

  1617   if (data == NULL)

  1618     return NULL;

  1620   buffer = gst_buffer_new ();

  1621   GST_BUFFER_DATA (buffer) = data;

  1622   GST_BUFFER_MALLOCDATA (buffer) = data;

  1623   GST_BUFFER_SIZE (buffer) = nbytes;

  1625   return buffer;

  1626 }

  1627 #endif

  1630 static gboolean

  1631 plugin_init (GstPlugin * plugin)

  1632 {

  1633 #ifdef ENABLE_NLS

  1634   setlocale (LC_ALL, "");

  1635   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1636 #endif /* ENABLE_NLS */

  1638   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1639           GST_TYPE_NUV_DEMUX)) {

  1640     return FALSE;

  1641   }

  1642   return TRUE;

  1643 }

  1645 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1646     GST_VERSION_MINOR,

  1647     "nuvdemux",

  1648     "Demuxes and muxes audio and video",

  1649      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	rosfran
	Mon Mar 26 16:04:46 2007 +0100 (2007-03-26)
branch	trunk
changeset 448	1eff6a1f7263
parent 440	1a9af071ab1f
child 476	f9330272e09d
permissions	-rw-r--r--