gmyth: gst-plugins-nuvdemux/nuvdemux/gstnuvdemux.c@32148e79242d

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

   803     goto done;

   804   }

   806   if (h.i_length > 0) {

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

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

   809       goto done;

   810     }

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

   813       h.i_timecode = 0;

   814       //goto done;

   815     }

   817     timestamp = h.i_timecode * GST_MSECOND;

   818     GST_BUFFER_TIMESTAMP (buf) = timestamp;

   819   }

   820   else {

   821     goto done;

   822   }

   825   switch (h.i_type) {

   826     case 'V':

   827     {

   828       pad = nuv->priv->src_video_pad;

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

   832         /* send new segment event*/

   833         gst_pad_push_event (nuv->priv->src_video_pad,

   834           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   835                                      GST_CLOCK_TIME_NONE, 0));

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

   838             nuv->priv->time_start = timestamp;

   839         }

   840         nuv->priv->new_video_segment = FALSE;

   841       }

   843       break;

   844     }

   845     case 'A':

   846     {

   847       pad = nuv->priv->src_audio_pad;

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

   850         /* send new segment event*/

   851         gst_pad_push_event (nuv->priv->src_audio_pad,

   852           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   853                                      GST_CLOCK_TIME_NONE, 0));

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

   856             nuv->priv->time_start = timestamp;

   857         }

   858         nuv->priv->new_audio_segment = FALSE;

   859       }

   861       break;

   862     }

   863     case 'S':

   864    {

   865       switch (h.i_compression) {

   866         case 'V':

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

   868           gst_pad_push_event (nuv->priv->src_video_pad,

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

   870               		GST_CLOCK_TIME_NONE, 0));

   871           break;

   872         case 'A':

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

   874           gst_pad_push_event (nuv->priv->src_audio_pad,

   875               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   876               		GST_CLOCK_TIME_NONE, 0));

   877           break;

   878         default:

   879           break;

   880       }

   881       goto done;

   882     }

   883     default:

   884       break;

   885   }

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

   888       /* pushing the buffer */

   889       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   890       ret = gst_pad_push (pad, buf);

   891       buf = NULL;

   893       if (ret != GST_FLOW_OK) {

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

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

   897             nuv->priv->last_video_return = ret;

   898         }

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

   900             nuv->priv->last_audio_return = ret;

   901         }

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

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

   905           ret = GST_FLOW_OK;

   906         } else {

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

   908 	}

   910       }

   911   }

   913 done:

   914   if (buf != NULL) {

   915       gst_buffer_unref (buf);

   916       buf = NULL;

   917   }

   918   if (ret == GST_FLOW_OK) {

   919      nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   921   }

   922   return ret;

   923 }

   925 static GstFlowReturn

   926 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   927 {

   928   GstFlowReturn ret = GST_FLOW_OK;

   930   /* ffmpeg extra data */

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

   932       &nuv->priv->mpeg_buffer);

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

   934     return ret;

   935   }

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

   938   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   939   return ret;

   940 }

   942 static GstFlowReturn

   943 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   944 {

   945   GstFlowReturn ret = GST_FLOW_OK;

   947   /* Load 'D' */

   948   nuv_frame_header h;

   950   ret = gst_nuv_demux_frame_header_load (nuv, &h);

   951   if (ret != GST_FLOW_OK)

   952     return ret;

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

   955     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

   956     return GST_FLOW_NOT_SUPPORTED;

   957   }

   959   if (h.i_length > 0) {

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

   961       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

   962     } else {

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

   964       return GST_FLOW_NOT_SUPPORTED;

   965     }

   966   } else {

   967     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   968   }

   970   return ret;

   971 }

   973 static GstFlowReturn

   974 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

   975 {

   976   GstFlowReturn ret = GST_FLOW_OK;

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

   979   if (ret != GST_FLOW_OK)

   980     return ret;

   982   gst_nuv_demux_create_pads (nuv);

   983   nuv->priv->state = GST_NUV_DEMUX_INDEX_CREATE;

   984   return ret;

   985 }

   987 static GstFlowReturn

   988 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

   989 {

   990   GstBuffer *buf = NULL;

   991   GstFlowReturn res = GST_FLOW_OK;

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

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

   995     if (buf != NULL) {

   996       gst_buffer_unref (buf);

   997     }

   998     return res;

   999   }

  1001   if (buf->data[0] == 'X') {

  1002     gst_buffer_unref (buf);

  1003     buf = NULL;

  1004     nuv_frame_header h;

  1006     res = gst_nuv_demux_frame_header_load (nuv, &h);

  1007     if (res != GST_FLOW_OK)

  1008       return res;

  1010     if (h.i_length != 512) {

  1011       return GST_FLOW_ERROR;

  1012     }

  1013     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

  1014   } else {

  1015     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

  1016     g_object_unref (buf);

  1017     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

  1018         (_("incomplete NUV support")), ("incomplete NUV support"));

  1019     return GST_FLOW_ERROR;

  1020   }

  1021   return res;

  1022 }

  1024 static void

  1025 gst_nuv_demux_create_seek_index (GstNuvDemux * nuv)

  1026 {

  1027   GstMessage *msg;

  1028   nuv_frame_header h;

  1030   while (gst_nuv_demux_frame_header_load (nuv, &h) == GST_FLOW_OK) {

  1031     if ((h.i_type == 'V') && (h.i_keyframe == 0)) {

  1032       frame_index_data *f = g_new0 (frame_index_data, 1);

  1034       f->offset = nuv->priv->offset - 12;

  1035       f->timecode = h.i_timecode * GST_MSECOND;

  1037       nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1038     }

  1039     if (h.i_type != 'R') {

  1040       nuv->priv->offset += h.i_length;

  1041 		  if (h.i_type == 'A' || h.i_type == 'V')

  1042   		  nuv->priv->duration_time = h.i_timecode * GST_MSECOND;

  1043     }

  1044   }

  1045   GST_DEBUG_OBJECT  (nuv, "CREATING INDEX: DONE : DURATION Bytes/Sec: %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,

  1046     nuv->priv->offset, nuv->priv->duration_time);

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

  1049   nuv->priv->offset = nuv->priv->header_lengh;

  1051   msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_time);

  1052   gst_element_post_message (GST_ELEMENT (nuv), msg);

  1053 }

  1055 static GstFlowReturn

  1056 gst_nuv_demux_play (GstPad * pad)

  1057 {

  1058   GstFlowReturn res = GST_FLOW_OK;

  1059   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

  1061   switch (nuv->priv->state) {

  1062     case GST_NUV_DEMUX_START:

  1063       res = gst_nuv_demux_stream_file_header (nuv);

  1064       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1065         goto pause;

  1066       }

  1067       break;

  1069     case GST_NUV_DEMUX_HEADER_DATA:

  1070       res = gst_nuv_demux_stream_header_data (nuv);

  1071       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1072         goto pause;

  1073       }

  1074       break;

  1076     case GST_NUV_DEMUX_EXTRA_DATA:

  1077       res = gst_nuv_demux_stream_extra_data (nuv);

  1078       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1079         goto pause;

  1080       }

  1081       break;

  1083     case GST_NUV_DEMUX_MPEG_DATA:

  1084       res = gst_nuv_demux_stream_mpeg_data (nuv);

  1085       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1086         goto pause;

  1087       }

  1088       break;

  1090     case GST_NUV_DEMUX_EXTEND_HEADER:

  1091       res = gst_nuv_demux_stream_extend_header (nuv);

  1092       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1093         goto pause;

  1094       }

  1095       break;

  1097     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1098       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1099       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1100         goto pause;

  1101       }

  1102       //store file header size

  1103       nuv->priv->header_lengh = nuv->priv->offset;

  1104       break;

  1106     case GST_NUV_DEMUX_INDEX_CREATE:

  1107       if (nuv->priv->mode == NUV_PULL_MODE) {

  1108         gst_nuv_demux_create_seek_index (nuv);

  1109       }

  1110       nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1111       break;

  1113     case GST_NUV_DEMUX_FRAME_HEADER:

  1114       res = gst_nuv_demux_read_head_frame (nuv);

  1115       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1116         goto pause;

  1117       }

  1118       break;

  1120     case GST_NUV_DEMUX_MOVI:

  1121       res = gst_nuv_demux_stream_data (nuv);

  1122       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1123         goto pause;

  1124       }

  1125       break;

  1127     case GST_NUV_DEMUX_INVALID_DATA:

  1128       goto pause;

  1129       break;

  1130     default:

  1131       g_assert_not_reached ();

  1132   }

  1134   return GST_FLOW_OK;

  1136 pause:

  1137   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1138   gst_pad_pause_task (nuv->priv->sinkpad);

  1140   if (res == GST_FLOW_ERROR_EOS) {

  1141     gst_nuv_demux_send_eos (nuv);

  1142     nuv->priv->eos = TRUE;

  1143     res = GST_FLOW_OK;

  1144   }

  1146   if (GST_FLOW_IS_FATAL (res)) {

  1147     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1148         (_("Internal data stream error.")),

  1149         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1151     gst_nuv_demux_send_eos (nuv);

  1152   }

  1153   return res;

  1154 }

  1156 static void

  1157 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1158 {

  1159   gst_element_post_message (GST_ELEMENT (nuv),

  1160       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1162   if (nuv->priv->src_video_pad)

  1163     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1164   if (nuv->priv->src_audio_pad)

  1165     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1166 }

  1168 static GstFlowReturn

  1169 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1170     GstBuffer ** buffer)

  1171 {

  1172   GstFlowReturn ret = GST_FLOW_OK;

  1174   if (size == 0) {

  1175     return ret;

  1176   }

  1178   if (nuv->priv->mode == NUV_PULL_MODE) {

  1179     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1180     if (ret == GST_FLOW_OK) {

  1181       if (move) {

  1182         nuv->priv->offset += size;

  1183       }

  1184       /* got eos */

  1185     } else if (ret == GST_FLOW_UNEXPECTED) {

  1186       return GST_FLOW_ERROR_EOS;

  1187     }

  1188   } else {

  1189     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1190       nuv->priv->more_data = TRUE;

  1191       return GST_FLOW_ERROR_NO_DATA;

  1192     }

  1193     if (move) {

  1194       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1195     } else {

  1196       guint8 *data = NULL;

  1197       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1198       *buffer = gst_buffer_new ();

  1199       gst_buffer_set_data (*buffer, data, size);

  1200     }

  1201   }

  1202   return ret;

  1203 }

  1205 static gboolean

  1206 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1207 {

  1208   gboolean res = TRUE;

  1209   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1211   if (gst_pad_check_pull_range (sinkpad)) {

  1212     gst_adapter_clear (nuv->priv->adapter);

  1213     res = gst_pad_activate_pull (sinkpad, TRUE);

  1214   } else {

  1215     gst_adapter_clear (nuv->priv->adapter);

  1216     res = gst_pad_activate_push (sinkpad, TRUE);

  1217   }

  1219   g_object_unref (nuv);

  1220   return res;

  1221 }

  1223 static gboolean

  1224 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1225 {

  1226   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1228   if (active) {

  1229     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1230     nuv->priv->mode = NUV_PULL_MODE;

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

  1233     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1234   } else {

  1235     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1236     gst_pad_stop_task (sinkpad);

  1237   }

  1238   gst_object_unref (nuv);

  1240   return TRUE;

  1241 }

  1243 static gboolean

  1244 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1245 {

  1246   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1248   if (active) {

  1249     nuv->priv->mode = NUV_PUSH_MODE;

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

  1252     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1253   } else {

  1254     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1255   }

  1257   gst_object_unref (nuv);

  1259   return TRUE;

  1260 }

  1262 static frame_index_data *

  1263 gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

  1264   gint64 segment_stop, GstFormat format)

  1265 {

  1266   GSList *l;

  1267   frame_index_data *ret = NULL;

  1269   if (nuv->priv->index == NULL) {

  1270     return NULL;

  1271   }

  1273   /* find keyframe closest to the requested position  */

  1274   for (l = nuv->priv->index; l != NULL; l = l->next) {

  1275     frame_index_data *f = (frame_index_data *) l->data;

  1276     gint64 pos = 0;

  1278     if (format == GST_FORMAT_BYTES) {

  1279       pos = f->offset;

  1280     } else if (format == GST_FORMAT_TIME) {

  1281       pos = f->timecode;

  1282     } else {

  1283       return NULL;

  1284     }

  1286     if (pos >= seek_pos) {

  1287       ret = f;

  1288       break;

  1289     }

  1291     if ((segment_stop != -1) &&  (segment_stop != GST_CLOCK_TIME_NONE) && (pos > segment_stop)) {

  1292       break;

  1293     }

  1294   }

  1296   return ret;

  1297 }

  1299 static gboolean

  1300 gst_nuv_demux_do_seek (GstNuvDemux *nuv, GstEvent * event)

  1301 {

  1302   gdouble rate;

  1303   GstFormat format;

  1304   GstSeekFlags flags;

  1305   GstSeekType cur_type;

  1306   gint64 cur;

  1307   GstSeekType stop_type;

  1308   gint64 stop;

  1309   gboolean flush;

  1310   frame_index_data *entry;

  1311   gint64 segment_start;

  1312   gint64 segment_stop;

  1313   GstEvent *newsegment_event;

  1315   if (nuv->priv->eos) {

  1316     return FALSE;

  1317   }

  1319   if (nuv->priv->mode == NUV_PUSH_MODE) {

  1320     return FALSE;

  1321   }

  1324   gst_event_parse_seek (event, &rate, &format, &flags,

  1325       &cur_type, &cur, &stop_type, &stop);

  1329 /*

  1330   if (format == GST_FORMAT_TIME) {

  1331     GST_DEBUG_OBJECT (nuv, "Can only seek on BYTES");

  1332     return FALSE;

  1333   }

  1334 */

  1336   if (rate <= 0.0) {

  1337     GST_DEBUG_OBJECT (nuv, "Can only seek with positive rate");

  1338     return FALSE;

  1339   }

  1341   if (cur_type == GST_SEEK_TYPE_SET) {

  1342     GST_OBJECT_LOCK (nuv);

  1343     if (gst_nuv_demux_do_seek_index (nuv, cur, -1, format) == NULL) {

  1344       GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1345       GST_OBJECT_UNLOCK (nuv);

  1346       return FALSE;

  1347     }

  1348     GST_OBJECT_UNLOCK (nuv);

  1349   }

  1351   flush = !!(flags & GST_SEEK_FLAG_FLUSH);

  1353   if (flush) {

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

  1355     if (nuv->priv->src_video_pad != NULL) {

  1356       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_start ());

  1357     }

  1359     if (nuv->priv->src_audio_pad != NULL) {

  1360       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_start ());

  1361     }

  1362   }

  1363   else {

  1364     gst_pad_pause_task (nuv->priv->sinkpad);

  1365   }

  1367   GST_PAD_STREAM_LOCK (nuv->priv->sinkpad);

  1368   GST_OBJECT_LOCK (nuv);

  1371   if (cur == GST_CLOCK_TIME_NONE)

  1372     cur = 0;

  1373   if (stop == GST_CLOCK_TIME_NONE)

  1374     stop = nuv->priv->duration_time;

  1376   if (cur_type == GST_SEEK_TYPE_SET)

  1377     segment_start = cur;

  1378   else if (cur_type == GST_SEEK_TYPE_CUR)

  1379     segment_start = nuv->priv->segment_start + cur;

  1380   else

  1381     segment_start = nuv->priv->segment_start;

  1383   if (stop_type == GST_SEEK_TYPE_SET)

  1384     segment_stop = stop;

  1385   else if (stop_type == GST_SEEK_TYPE_CUR)

  1386     segment_stop = nuv->priv->segment_stop + stop;

  1387   else

  1388     segment_stop = nuv->priv->segment_stop;

  1390   segment_start = CLAMP (segment_start, 0, nuv->priv->duration_time);

  1391   segment_stop = CLAMP (segment_stop, 0, nuv->priv->duration_time);

  1393   entry = gst_nuv_demux_do_seek_index (nuv, segment_start,

  1394       segment_stop, format);

  1396   if (entry == NULL) {

  1397     GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1398     goto seek_error;

  1399   }

  1401   segment_start = entry->timecode;

  1403   nuv->priv->segment_start = segment_start;

  1404   nuv->priv->segment_stop = segment_stop;

  1406   GST_OBJECT_UNLOCK (nuv);

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

  1409     GstMessage *msg;

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

  1411       nuv->priv->segment_start);

  1413     gst_element_post_message (GST_ELEMENT (nuv), msg);

  1414   }

  1416   GST_DEBUG_OBJECT (nuv, "NEW SEGMENT START %" G_GUINT64_FORMAT ", STOP %" G_GUINT64_FORMAT,

  1417     segment_start, segment_stop);

  1418   newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1419     GST_FORMAT_TIME, segment_start, segment_stop, segment_start);

  1422   if (flush) {

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

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

  1425     }

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

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

  1429     }

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

  1432   }

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

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

  1437   }

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

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

  1440   }

  1442   gst_event_unref (newsegment_event);

  1444   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1445   nuv->priv->offset = entry->offset;

  1447   gst_pad_start_task (nuv->priv->sinkpad, (GstTaskFunction) gst_nuv_demux_loop,

  1448       nuv->priv->sinkpad);

  1450   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1451   return TRUE;

  1453 seek_error:

  1454   GST_DEBUG_OBJECT (nuv, "Got a seek error");

  1455   GST_OBJECT_UNLOCK (nuv);

  1456   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1457   return FALSE;

  1459 }

  1461 static gboolean

  1462 gst_nuv_demux_srcpad_event (GstPad * pad, GstEvent * event)

  1463 {

  1464   gboolean res = FALSE;

  1465   GstNuvDemux *nuv;

  1467   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1469   switch (GST_EVENT_TYPE (event)) {

  1470     case GST_EVENT_SEEK:

  1471       res = gst_nuv_demux_do_seek (nuv, event);

  1472       break;

  1473     default:

  1474       res = FALSE;

  1475       break;

  1476   }

  1478   gst_object_unref (nuv);

  1479   return res;

  1480 }

  1482 static GstFlowReturn

  1483 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1484 {

  1485   GstFlowReturn ret = GST_FLOW_OK;

  1486   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1488   if (nuv->priv->mode != NUV_PUSH_MODE)

  1489     return ret;

  1491   gst_adapter_push (nuv->priv->adapter, buf);

  1493   while ((ret == GST_FLOW_OK) && (nuv->priv->more_data == FALSE)) {

  1494       ret = gst_nuv_demux_play (pad);

  1495   }

  1497   nuv->priv->more_data = FALSE;

  1498   gst_object_unref (nuv);

  1500   return ret;

  1501 }

  1503 static void

  1504 gst_nuv_demux_loop (GstPad * pad)

  1505 {

  1506   gst_nuv_demux_play (pad);

  1507 }

  1509 static void

  1510 gst_nuv_demux_index_free (gpointer data, gpointer user_data)

  1511 {

  1512   g_free (data);

  1513 }

  1515 static void

  1516 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1517 {

  1518   nuv->priv->eos = FALSE;

  1519   nuv->priv->more_data = FALSE;

  1520   nuv->priv->state = GST_NUV_DEMUX_START;

  1521   nuv->priv->mode = NUV_PUSH_MODE;

  1522   nuv->priv->offset = 0;

  1523   nuv->priv->time_start = 0;

  1524   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1525   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1526   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1527   nuv->priv->last_video_return = GST_FLOW_OK;

  1528   nuv->priv->last_audio_return = GST_FLOW_OK;

  1529   nuv->priv->header_lengh = 0;

  1530   nuv->priv->segment_stop = GST_CLOCK_TIME_NONE;

  1531   nuv->priv->segment_start = GST_CLOCK_TIME_NONE;

  1533   //clear index list

  1534   g_slist_foreach (nuv->priv->index, gst_nuv_demux_index_free, NULL);

  1535   g_slist_free (nuv->priv->index);

  1536   nuv->priv->index = NULL;

  1538   gst_adapter_clear (nuv->priv->adapter);

  1540   if (nuv->priv->mpeg_buffer != NULL) {

  1541     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1542     nuv->priv->mpeg_buffer = NULL;

  1543   }

  1544 }

  1546 static void

  1547 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1548 {

  1549   if (nuv->priv->src_video_pad) {

  1550     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1551     nuv->priv->src_video_pad = NULL;

  1552   }

  1554   if (nuv->priv->src_audio_pad) {

  1555     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1556     nuv->priv->src_audio_pad = NULL;

  1557   }

  1558 }

  1560 static GstStateChangeReturn

  1561 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1562 {

  1563   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1565   switch (transition) {

  1566     case GST_STATE_CHANGE_NULL_TO_READY:

  1567       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1568       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1569       break;

  1570     default:

  1571       break;

  1572   }

  1574   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1575   if (ret == GST_STATE_CHANGE_FAILURE) {

  1576     goto done;

  1577   }

  1579   switch (transition) {

  1580     case GST_STATE_CHANGE_READY_TO_NULL:

  1581       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1582       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1583       break;

  1584     default:

  1585       break;

  1586   }

  1588 done:

  1589   return ret;

  1590 }

  1592 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1593 GstBuffer *

  1594 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1595 {

  1596   GstBuffer *buffer;

  1597   GstBuffer *cur;

  1598   guint8 *data;

  1600   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1601   g_return_val_if_fail (nbytes > 0, NULL);

  1603   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1605   /* we don't have enough data, return NULL. This is unlikely

  1606    * as one usually does an _available() first instead of peeking a

  1607    * random size. */

  1608   if (G_UNLIKELY (nbytes > adapter->size))

  1609     return NULL;

  1611   /* our head buffer has enough data left, return it */

  1612   cur = adapter->buflist->data;

  1613   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1614     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1615         nbytes);

  1616     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1618     gst_adapter_flush (adapter, nbytes);

  1620     return buffer;

  1621   }

  1623   data = gst_adapter_take (adapter, nbytes);

  1624   if (data == NULL)

  1625     return NULL;

  1627   buffer = gst_buffer_new ();

  1628   GST_BUFFER_DATA (buffer) = data;

  1629   GST_BUFFER_MALLOCDATA (buffer) = data;

  1630   GST_BUFFER_SIZE (buffer) = nbytes;

  1632   return buffer;

  1633 }

  1634 #endif

  1637 static gboolean

  1638 plugin_init (GstPlugin * plugin)

  1639 {

  1640 #ifdef ENABLE_NLS

  1641   setlocale (LC_ALL, "");

  1642   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1643 #endif /* ENABLE_NLS */

  1645   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1646           GST_TYPE_NUV_DEMUX)) {

  1647     return FALSE;

  1648   }

  1649   return TRUE;

  1650 }

  1652 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1653     GST_VERSION_MINOR,

  1654     "nuvdemux",

  1655     "Demuxes and muxes audio and video",

  1656      plugin_init, VERSION, "LGPL", "NuvDemux", "")

author	rosfran
	Wed Apr 04 16:12:16 2007 +0100 (2007-04-04)
branch	trunk
changeset 493	32148e79242d
parent 476	f9330272e09d
child 508	224adf6cd007
permissions	-rw-r--r--