gmyth: gst-gmyth/nuvdemux/gstnuvdemux.c@312d6bc514f3

     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;

   207   gboolean 			new_file;

   208   guint 			segment;

   210   /* NUV decoding state */

   211   GstNuvDemuxState  state;

   212   guint64           offset;

   214   /* duration information */

   215   guint64            duration_bytes;

   216   guint64            duration_time;

   217   guint64            segment_stop;

   218   guint64            segment_start;

   220   /* segment control info */

   221   gboolean          new_audio_segment;

   222   gboolean          new_video_segment;

   224   /* Mpeg ExtraData */

   225   guint64           mpeg_data_size;

   226   GstBuffer         *mpeg_buffer;

   228   /* Headers */

   229   nuv_header h;

   230   nuv_extended_header eh;

   231   nuv_frame_header fh;

   233   /* anothers info */

   234   guint64           header_lengh;

   235   gint64            time_start;

   236   gint64            time_diff;

   237   gint64            time_qos;

   238   guint64           last_frame_time;

   239   GSList            *index;

   240 };

   243 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",

   244     GST_PAD_SINK,

   245     GST_PAD_ALWAYS,

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

   248 static GstStaticPadTemplate audio_src_template =

   249 GST_STATIC_PAD_TEMPLATE ("audio_src",

   250     GST_PAD_SRC,

   251     GST_PAD_SOMETIMES,

   252     GST_STATIC_CAPS_ANY);

   254 static GstStaticPadTemplate video_src_template =

   255 GST_STATIC_PAD_TEMPLATE ("video_src",

   256     GST_PAD_SRC,

   257     GST_PAD_SOMETIMES,

   258     GST_STATIC_CAPS_ANY);

   260 static void gst_nuv_demux_dispose (GObject * object);

   261 static void gst_nuv_demux_finalize (GObject * object);

   262 static GstStateChangeReturn gst_nuv_demux_change_state (GstElement * element,

   263     GstStateChange transition);

   264 static void gst_nuv_demux_loop (GstPad * pad);

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

   266 static GstFlowReturn gst_nuv_demux_play (GstPad * pad);

   267 static gboolean gst_nuv_demux_sink_activate_pull (GstPad * sinkpad,

   268     gboolean active);

   269 static gboolean gst_nuv_demux_sink_activate_push (GstPad * pad,

   270     gboolean active);

   271 static gboolean gst_nuv_demux_sink_activate (GstPad * sinkpad);

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

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

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

   275   gint64 segment_stop, GstFormat format);

   278 static GstFlowReturn gst_nuv_demux_move_bytes (GstNuvDemux * nuv, guint64 size);

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

   280     gboolean move, GstBuffer ** buffer);

   281 static void gst_nuv_demux_reset (GstNuvDemux * nuv);

   282 static void gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv);

   283 static void gst_nuv_demux_send_eos (GstNuvDemux * nuv);

   284 static void gst_nuv_demux_create_seek_index (GstNuvDemux * nuv);

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

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

   289 #endif

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

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

   295  * Utils function

   296  ******************************************************************************/

   297 #if G_BYTE_ORDER == G_BIG_ENDIAN

   298 static inline gdouble

   299 _gdouble_swap_le_be (gdouble * d)

   300 {

   301   union

   302   {

   303     guint64 i;

   304     gdouble d;

   305   } u;

   307   u.d = *d;

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

   309   return u.d;

   310 }

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

   313 #else /* G_BYTE_ORDER != G_BIG_ENDIAN */

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

   315 #endif /* G_BYTE_ORDER != G_BIG_ENDIAN */

   317 static void

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

   319 {

   320     if (in == 29.97) {

   321         *num = 30000;

   322         *denom = 1001;

   323     } else if (in == 23.976) {

   324         *num = 24000;

   325         *denom = 1001;

   326     } else {

   327         *denom = 1;

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

   329             *denom *= 10;

   330             in *= 10.0;

   331         }

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

   333     }

   334 }

   336 /* GObject Functions */

   338 static void

   339 gst_nuv_demux_base_init (gpointer klass)

   340 {

   341   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);

   343   gst_element_class_add_pad_template (element_class,

   344       gst_static_pad_template_get (&audio_src_template));

   346   gst_element_class_add_pad_template (element_class,

   347       gst_static_pad_template_get (&video_src_template));

   349   gst_element_class_add_pad_template (element_class,

   350       gst_static_pad_template_get (&sink_template));

   351   gst_element_class_set_details (element_class, &gst_nuv_demux_details);

   352 }

   354 static void

   355 gst_nuv_demux_class_init (GstNuvDemuxClass * klass)

   356 {

   357   GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);

   358   GObjectClass *gobject_class = (GObjectClass *) klass;

   360   GST_DEBUG_CATEGORY_INIT (nuvdemux_debug, "nuvdemux",

   361       0, "Demuxer for NUV streams");

   363   parent_class = g_type_class_peek_parent (klass);

   365   gobject_class->dispose = gst_nuv_demux_dispose;

   366   gobject_class->finalize = gst_nuv_demux_finalize;

   367   gstelement_class->change_state = gst_nuv_demux_change_state;

   369   g_type_class_add_private (gobject_class, sizeof (GstNuvDemuxPrivate));

   370 }

   372 static void

   373 gst_nuv_demux_init (GstNuvDemux * nuv, GstNuvDemuxClass * nuv_class)

   374 {

   375   nuv->priv = GST_NUV_DEMUX_GET_PRIVATE (nuv);

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

   378   /* creating adapter */

   379   nuv->priv->mode = NUV_PUSH_MODE;

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

   382   nuv->priv->new_audio_segment = TRUE;

   383   nuv->priv->new_video_segment = TRUE;

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

   386   gst_pad_set_activatepull_function (nuv->priv->sinkpad,

   387       gst_nuv_demux_sink_activate_pull);

   388   gst_pad_set_activatepush_function (nuv->priv->sinkpad,

   389       gst_nuv_demux_sink_activate_push);

   390   gst_pad_set_chain_function (nuv->priv->sinkpad,

   391       GST_DEBUG_FUNCPTR (gst_nuv_demux_chain));

   392   gst_pad_set_event_function (nuv->priv->sinkpad,

   393       GST_DEBUG_FUNCPTR (gst_nuv_demux_sink_event));

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

   398 }

   400 static void

   401 gst_nuv_demux_dispose (GObject * object)

   402 {

   403   GstNuvDemux *nuv = GST_NUV_DEMUX (object);

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

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

   408   }

   410   gst_nuv_demux_reset (GST_NUV_DEMUX (object));

   411   gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (object));

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

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

   415   }

   416 }

   418 static void

   419 gst_nuv_demux_finalize (GObject * object)

   420 {

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

   422 }

   425 /* HeaderLoad:

   426  */

   427 static GstFlowReturn

   428 gst_nuv_demux_header_load (GstNuvDemux * nuv, nuv_header *h)

   429 {

   430   GstBuffer *buffer = NULL;

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

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

   434       goto done;

   435   }

   437   if (h != NULL) {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   454   	GST_DEBUG_OBJECT (nuv,

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

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

   457       	h->i_video_blocks, h->i_audio_blocks, h->i_text_blocks,

   458       	h->i_keyframe_distance);

   459   }

   461 done:

   462   if (buffer != NULL) {

   463      gst_buffer_unref (buffer);

   464      buffer = NULL;

   465   }

   466   return res;

   467 }

   469 static GstFlowReturn

   470 gst_nuv_demux_stream_header_data (GstNuvDemux * nuv)

   471 {

   472   GstFlowReturn res;

   474   if (nuv->priv->new_file)

   475 	  res = gst_nuv_demux_header_load (nuv, NULL);

   476   else

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

   479   if (res == GST_FLOW_OK)

   480     nuv->priv->state = GST_NUV_DEMUX_EXTRA_DATA;

   481   return res;

   482 }

   484 /*

   485  * Read NUV file tag

   486  */

   487 static GstFlowReturn

   488 gst_nuv_demux_stream_file_header (GstNuvDemux * nuv)

   489 {

   490   GstFlowReturn res = GST_FLOW_OK;

   491   GstBuffer *file_header = NULL;

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

   494   if (res == GST_FLOW_OK) {

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

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

   497       nuv->priv->state = GST_NUV_DEMUX_HEADER_DATA;

   498     } else {

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

   500       nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

   501       res = GST_FLOW_ERROR;

   502     }

   503   }

   505   if (file_header != NULL) {

   506     gst_buffer_unref (file_header);

   507     file_header = NULL;

   508   }

   509   return res;

   510 }

   512 /* FrameHeaderLoad:

   513  */

   514 static GstFlowReturn

   515 gst_nuv_demux_frame_header_load (GstNuvDemux * nuv, nuv_frame_header *h)

   516 {

   517   unsigned char *data;

   518   GstBuffer *buf = NULL;

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

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

   523       goto done;

   524   }

   526   if (h == NULL)

   527 	goto done;

   529   data = buf->data;

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

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

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

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

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

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

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

   539       h->i_type,

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

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

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

   544 done:

   545   if (buf != NULL) {

   546       gst_buffer_unref (buf);

   547       buf = NULL;

   548   }

   550   return res;

   551 }

   553 static GstFlowReturn

   554 gst_nuv_demux_extended_header_load (GstNuvDemux * nuv,

   555     nuv_extended_header * h)

   556 {

   557   unsigned char *data;

   558   GstBuffer *buff = NULL;

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

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

   563       goto done;

   564   }

   566   if (h == NULL)

   567     goto done;

   569   data = buff->data;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   588   GST_DEBUG_OBJECT (nuv,

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

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

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

   592       h->i_audio_sample_rate, h->i_audio_bits_per_sample, h->i_audio_channels,

   593       h->i_audio_compression_ratio, h->i_audio_quality, h->i_rtjpeg_quality,

   594       h->i_rtjpeg_luma_filter, h->i_rtjpeg_chroma_filter, h->i_lavc_bitrate,

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

   596       h->i_keyframe_adjust_offset);

   598 done:

   599   if (buff != NULL) {

   600     gst_buffer_unref (buff);

   601     buff = NULL;

   602   }

   603   return res;

   604 }

   607 /* Query Functions */

   608 static const GstQueryType *

   609 gst_nuv_demux_get_src_query_types (GstPad * pad)

   610 {

   611   static const GstQueryType src_types[] = {

   612     GST_QUERY_POSITION,

   613     GST_QUERY_DURATION,

   614     0

   615   };

   617   return src_types;

   618 }

   620 static gboolean

   621 gst_nuv_demux_handle_src_query (GstPad * pad, GstQuery * query)

   622 {

   623   gboolean res = FALSE;

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

   627   switch (GST_QUERY_TYPE (query))

   628   {

   629     case GST_QUERY_POSITION:

   630 	{

   631 		GstFormat format;

   632 		gst_query_parse_position (query, &format, NULL);

   633 		switch (format)

   634 		{

   635 			case GST_FORMAT_TIME:

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

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

   638 			        res = TRUE;

   639 				}

   640 			  	break;

   641 			default:

   642 				break;

   643 		}

   644 		break;

   645 	}

   646     case GST_QUERY_DURATION:

   647 	{

   648 	  GstFormat format;

   649 	  gst_query_parse_duration (query, &format, NULL);

   650 	  switch (format)

   651 	  {

   652 			case GST_FORMAT_TIME:

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

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

   655 				    res = TRUE;

   656 			    }

   657 				break;

   658 			default:

   659 			    break;

   660 	  }

   661 	  break;

   662   	}

   663 	default:

   664 	  break;

   665   }

   667   if (res==FALSE) {

   668 	res = gst_pad_query_default (pad, query);

   669   }

   671   gst_object_unref (nuv);

   672   return res;

   673 }

   675 static GstPad*

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

   677 {

   678     GstPad *pad = NULL;

   679     pad = gst_pad_new_from_static_template (template, name);

   680     gst_pad_set_caps (pad, caps);

   681     gst_pad_set_active (pad, TRUE);

   682     gst_pad_use_fixed_caps (pad);

   683     gst_element_add_pad (GST_ELEMENT (nuv), pad);

   685     gst_pad_set_event_function (pad,

   686       GST_DEBUG_FUNCPTR (gst_nuv_demux_srcpad_event));

   688     gst_pad_set_query_type_function (pad,

   689       GST_DEBUG_FUNCPTR (gst_nuv_demux_get_src_query_types));

   691     gst_pad_set_query_function (pad,

   692       GST_DEBUG_FUNCPTR (gst_nuv_demux_handle_src_query));

   695     return pad;

   696 }

   698 static void

   699 gst_nuv_demux_create_pads (GstNuvDemux * nuv)

   700 {

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

   702     GstCaps *video_caps = NULL;

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

   705         "divxversion", G_TYPE_INT, 4,

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

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

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

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

   710         "pixel-aspect-ratio", GST_TYPE_FRACTION,

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

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

   714     gst_caps_unref (video_caps);

   715   }

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

   718     GstCaps *audio_caps = NULL;

   720     audio_caps = gst_caps_new_simple ("audio/mpeg",

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

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

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

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

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

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

   728     gst_caps_unref (audio_caps);

   729   }

   731   gst_element_no_more_pads (GST_ELEMENT (nuv));

   732 }

   734 static gboolean

   735 gst_nuv_demux_validate_header (nuv_frame_header *h)

   736 {

   737   gboolean valid = FALSE;

   738   //g_usleep (1 * G_USEC_PER_SEC );

   739   switch  (h->i_type) {

   740 /*

   741     case 'V':

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

   743           h->i_compression == 1 ||

   744           h->i_compression == 2 ||

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

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

   747          valid = TRUE;

   748       }

   749       break;

   750     case 'A':

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

   752           h->i_compression == 1 ||

   753           h->i_compression == 2 ||

   754           h->i_compression == 3 ||

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

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

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

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

   759          valid = TRUE;

   760       }

   761       break;

   762     case 'S':

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

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

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

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

   767          valid = TRUE;

   768       }

   769       break;

   770 */

   771     case 'A':

   772     case 'V':

   773     case 'S':

   774     case 'R':

   775     case 'D':

   776     case 'Q':

   777       valid  = TRUE;

   778       break;

   779     default:

   780       valid = FALSE;

   781   }

   783   return valid;

   784 }

   786 static GstFlowReturn

   787 gst_nuv_demux_read_head_frame (GstNuvDemux * nuv)

   788 {

   789   GstFlowReturn ret = GST_FLOW_OK;

   790   gboolean valid = FALSE;

   792   do {

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

   794     if (ret != GST_FLOW_OK) {

   795       return ret;

   796     }

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

   799       valid = TRUE;

   801   } while (valid == FALSE);

   803   nuv->priv->state = GST_NUV_DEMUX_MOVI;

   804   return ret;

   805 }

   807 static gboolean

   808 gst_nuv_combine_flow (GstNuvDemux *nuv)

   809 {

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

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

   813     if ((ret_video != GST_FLOW_OK) &&

   814         (ret_audio != GST_FLOW_OK))

   815         return FALSE;

   817     if (GST_FLOW_IS_FATAL (ret_video))

   818         return FALSE;

   820     if (GST_FLOW_IS_FATAL (ret_audio))

   821         return FALSE;

   823     return TRUE;

   824 }

   826 static GstFlowReturn

   827 gst_nuv_demux_stream_data (GstNuvDemux * nuv)

   828 {

   829   GstFlowReturn ret = GST_FLOW_OK;

   830   GstPad *pad = NULL;

   831   guint64 timestamp;

   832   GstBuffer *buf = NULL;

   833   nuv_frame_header h;

   835   h = nuv->priv->fh;

   837   if (h.i_type == 'R') {

   838     goto done;

   839   }

   841   if (h.i_length > 0) {

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

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

   844       goto done;

   845     }

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

   848       h.i_timecode = 0;

   849       //goto done;

   850     }

   852     timestamp = h.i_timecode * GST_MSECOND;

   853     GST_BUFFER_TIMESTAMP (buf) = timestamp;

   854   }

   855   else {

   856     goto done;

   857   }

   860   switch (h.i_type) {

   861     case 'V':

   862     {

   863       pad = nuv->priv->src_video_pad;

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

   867         /* send new segment event*/

   868         gst_pad_push_event (nuv->priv->src_video_pad,

   869           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   870                                      GST_CLOCK_TIME_NONE, 0));

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

   873             nuv->priv->time_start = timestamp;

   874         }

   875         nuv->priv->new_video_segment = FALSE;

   876       }

   878       break;

   879     }

   880     case 'A':

   881     {

   882       pad = nuv->priv->src_audio_pad;

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

   885         /* send new segment event*/

   886         gst_pad_push_event (nuv->priv->src_audio_pad,

   887           gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   888                                      GST_CLOCK_TIME_NONE, 0));

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

   891             nuv->priv->time_start = timestamp;

   892         }

   893         nuv->priv->new_audio_segment = FALSE;

   894       }

   896       break;

   897     }

   898     case 'S':

   899    {

   900       switch (h.i_compression) {

   901         case 'V':

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

   903           gst_pad_push_event (nuv->priv->src_video_pad,

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

   905               		GST_CLOCK_TIME_NONE, 0));

   906           break;

   907         case 'A':

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

   909           gst_pad_push_event (nuv->priv->src_audio_pad,

   910               gst_event_new_new_segment (TRUE, 1.0, GST_FORMAT_TIME, 0,

   911               		GST_CLOCK_TIME_NONE, 0));

   912           break;

   913         default:

   914           break;

   915       }

   916       goto done;

   917     }

   918     default:

   919       break;

   920   }

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

   923       /* pushing the buffer */

   924       gst_buffer_set_caps (buf, GST_PAD_CAPS (pad));

   925       ret = gst_pad_push (pad, buf);

   926       buf = NULL;

   928       if (ret != GST_FLOW_OK) {

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

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

   932             nuv->priv->last_video_return = ret;

   933         }

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

   935             nuv->priv->last_audio_return = ret;

   936         }

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

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

   940           ret = GST_FLOW_OK;

   941         } else {

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

   943 	}

   945       }

   946   }

   948 done:

   949   if (buf != NULL) {

   950       gst_buffer_unref (buf);

   951       buf = NULL;

   952   }

   953   if (ret == GST_FLOW_OK) {

   954      nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

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

   956   }

   957   return ret;

   958 }

   960 static GstFlowReturn

   961 gst_nuv_demux_stream_mpeg_data (GstNuvDemux * nuv)

   962 {

   963   GstFlowReturn ret = GST_FLOW_OK;

   965   /* ffmpeg extra data */

   966   if (nuv->priv->new_file) {

   967 	GstBuffer *buf;

   968 	ret = gst_nuv_demux_read_bytes (nuv, nuv->priv->mpeg_data_size, TRUE, &buf);

   969 	gst_buffer_unref (buf);

   970   } else {

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

   972       &nuv->priv->mpeg_buffer);

   973   }

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

   976     return ret;

   977   }

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

   980   nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

   981   return ret;

   982 }

   984 static GstFlowReturn

   985 gst_nuv_demux_stream_extra_data (GstNuvDemux * nuv)

   986 {

   987   GstFlowReturn ret = GST_FLOW_OK;

   989   /* Load 'D' */

   990   nuv_frame_header h;

   992   if (nuv->priv->new_file)

   993 	  ret = gst_nuv_demux_frame_header_load (nuv, NULL);

   994   else

   995 	  ret = gst_nuv_demux_frame_header_load (nuv, &h);

   997   if (ret != GST_FLOW_OK)

   998     return ret;

  1000   if (h.i_type != 'D') {

  1001     GST_WARNING_OBJECT (nuv, "Unsuported rtjpeg");

  1002     return GST_FLOW_NOT_SUPPORTED;

  1003   }

  1005   if (h.i_length > 0) {

  1006     if (h.i_compression == 'F') {

  1007       nuv->priv->state = GST_NUV_DEMUX_MPEG_DATA;

  1008     } else {

  1009       GST_WARNING_OBJECT (nuv, "only file with extended chunk are supported");

  1010       return GST_FLOW_NOT_SUPPORTED;

  1011     }

  1012   } else {

  1013     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER;

  1014   }

  1016   return ret;

  1017 }

  1019 static GstFlowReturn

  1020 gst_nuv_demux_stream_extend_header_data (GstNuvDemux * nuv)

  1021 {

  1022   GstFlowReturn ret = GST_FLOW_OK;

  1024   if (nuv->priv->new_file)

  1025 	  ret = gst_nuv_demux_extended_header_load (nuv, NULL);

  1026   else {

  1027 	  ret = gst_nuv_demux_extended_header_load (nuv, &nuv->priv->eh);

  1028 	  if (ret != GST_FLOW_OK)

  1029     	return ret;

  1030 	  gst_nuv_demux_create_pads (nuv);

  1031   }

  1033   nuv->priv->state = GST_NUV_DEMUX_INDEX_CREATE;

  1034   return ret;

  1035 }

  1037 static GstFlowReturn

  1038 gst_nuv_demux_stream_extend_header (GstNuvDemux * nuv)

  1039 {

  1040   GstBuffer *buf = NULL;

  1041   GstFlowReturn res = GST_FLOW_OK;

  1043   res = gst_nuv_demux_read_bytes (nuv, 1, FALSE, &buf);

  1044   if ((res != GST_FLOW_OK) || (buf == NULL)) {

  1045     if (buf != NULL) {

  1046       gst_buffer_unref (buf);

  1047     }

  1048     return res;

  1049   }

  1051   if (buf->data[0] == 'X') {

  1052     gst_buffer_unref (buf);

  1053     buf = NULL;

  1054     nuv_frame_header h;

  1056     res = gst_nuv_demux_frame_header_load (nuv, &h);

  1057     if (res != GST_FLOW_OK)

  1058       return res;

  1060     if (h.i_length != 512) {

  1061       return GST_FLOW_ERROR;

  1062     }

  1063     nuv->priv->state = GST_NUV_DEMUX_EXTEND_HEADER_DATA;

  1064   } else {

  1065     nuv->priv->state = GST_NUV_DEMUX_INVALID_DATA;

  1066     g_object_unref (buf);

  1067     GST_ELEMENT_WARNING (nuv, STREAM, FAILED,

  1068         (_("incomplete NUV support")), ("incomplete NUV support"));

  1069     return GST_FLOW_ERROR;

  1070   }

  1071   return res;

  1072 }

  1074 static void

  1075 gst_nuv_demux_create_seek_index (GstNuvDemux * nuv)

  1076 {

  1077   GstMessage *msg;

  1078   nuv_frame_header h;

  1080   while (gst_nuv_demux_frame_header_load (nuv, &h) == GST_FLOW_OK) {

  1081     if ((h.i_type == 'V') && (h.i_keyframe == 0)) {

  1082       frame_index_data *f = g_new0 (frame_index_data, 1);

  1084       f->offset = nuv->priv->offset - 12;

  1085       f->timecode = h.i_timecode * GST_MSECOND;

  1087       nuv->priv->index = g_slist_append (nuv->priv->index, f);

  1088     }

  1089     if (h.i_type != 'R') {

  1090       nuv->priv->offset += h.i_length;

  1091 		  if (h.i_type == 'A' || h.i_type == 'V')

  1092   		  nuv->priv->duration_time = h.i_timecode * GST_MSECOND;

  1093     }

  1094   }

  1095   GST_DEBUG_OBJECT  (nuv, "CREATING INDEX: DONE : DURATION Bytes/Sec: %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,

  1096     nuv->priv->offset, nuv->priv->duration_time);

  1098   nuv->priv->duration_bytes = nuv->priv->offset;

  1099   nuv->priv->offset = nuv->priv->header_lengh;

  1101   msg = gst_message_new_duration (GST_OBJECT (nuv), GST_FORMAT_TIME, nuv->priv->duration_time);

  1102   gst_element_post_message (GST_ELEMENT (nuv), msg);

  1103 }

  1105 static GstFlowReturn

  1106 gst_nuv_demux_play (GstPad * pad)

  1107 {

  1108   GstFlowReturn res = GST_FLOW_OK;

  1109   GstNuvDemux *nuv = GST_NUV_DEMUX (GST_PAD_PARENT (pad));

  1111   switch (nuv->priv->state) {

  1112     case GST_NUV_DEMUX_START:

  1113       res = gst_nuv_demux_stream_file_header (nuv);

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

  1115         goto pause;

  1116       }

  1117       break;

  1119     case GST_NUV_DEMUX_HEADER_DATA:

  1120       res = gst_nuv_demux_stream_header_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_EXTRA_DATA:

  1127       res = gst_nuv_demux_stream_extra_data (nuv);

  1128       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1129         goto pause;

  1130       }

  1131       break;

  1133     case GST_NUV_DEMUX_MPEG_DATA:

  1134       res = gst_nuv_demux_stream_mpeg_data (nuv);

  1135       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1136         goto pause;

  1137       }

  1138       break;

  1140     case GST_NUV_DEMUX_EXTEND_HEADER:

  1141       res = gst_nuv_demux_stream_extend_header (nuv);

  1142       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1143         goto pause;

  1144       }

  1145       break;

  1147     case GST_NUV_DEMUX_EXTEND_HEADER_DATA:

  1148       res = gst_nuv_demux_stream_extend_header_data (nuv);

  1149       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1150         goto pause;

  1151       }

  1152       //store file header size

  1153       nuv->priv->header_lengh = nuv->priv->offset;

  1154       break;

  1156     case GST_NUV_DEMUX_INDEX_CREATE:

  1157       if ((nuv->priv->mode == NUV_PULL_MODE) && (!nuv->priv->new_file)) {

  1158         gst_nuv_demux_create_seek_index (nuv);

  1159       }

  1161     case GST_NUV_DEMUX_FRAME_HEADER:

  1162       res = gst_nuv_demux_read_head_frame (nuv);

  1163       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1164         goto pause;

  1165       }

  1166       break;

  1168     case GST_NUV_DEMUX_MOVI:

  1169       res = gst_nuv_demux_stream_data (nuv);

  1170       if ((res != GST_FLOW_OK) && (res != GST_FLOW_ERROR_NO_DATA)) {

  1171         goto pause;

  1172       }

  1173       break;

  1175     case GST_NUV_DEMUX_INVALID_DATA:

  1176       goto pause;

  1177       break;

  1178     default:

  1179       g_assert_not_reached ();

  1180   }

  1182   return GST_FLOW_OK;

  1184 pause:

  1185   GST_LOG_OBJECT (nuv, "pausing task, reason %s", gst_flow_get_name (res));

  1186   gst_pad_pause_task (nuv->priv->sinkpad);

  1188   if (res == GST_FLOW_ERROR_EOS) {

  1189     gst_nuv_demux_send_eos (nuv);

  1190     nuv->priv->eos = TRUE;

  1191     res = GST_FLOW_OK;

  1192   }

  1194   if (GST_FLOW_IS_FATAL (res)) {

  1195     GST_ELEMENT_ERROR (nuv, STREAM, FAILED,

  1196         (_("Internal data stream error.")),

  1197         ("streaming stopped, reason %s", gst_flow_get_name (res)));

  1199     gst_nuv_demux_send_eos (nuv);

  1200   }

  1201   return res;

  1202 }

  1204 static void

  1205 gst_nuv_demux_send_eos (GstNuvDemux * nuv)

  1206 {

  1207   gst_element_post_message (GST_ELEMENT (nuv),

  1208       gst_message_new_segment_done (GST_OBJECT (nuv), GST_FORMAT_TIME, -1));

  1210   if (nuv->priv->src_video_pad)

  1211     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_eos ());

  1212   if (nuv->priv->src_audio_pad)

  1213     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_eos ());

  1214 }

  1216 static GstFlowReturn

  1217 gst_nuv_demux_read_bytes (GstNuvDemux * nuv, guint64 size, gboolean move,

  1218     GstBuffer ** buffer)

  1219 {

  1220   GstFlowReturn ret = GST_FLOW_OK;

  1222   if (size == 0) {

  1223     return ret;

  1224   }

  1226   if (nuv->priv->mode == NUV_PULL_MODE) {

  1227     ret = gst_pad_pull_range (nuv->priv->sinkpad, nuv->priv->offset, size, buffer);

  1228     if (ret == GST_FLOW_OK) {

  1229       if (move) {

  1230         nuv->priv->offset += size;

  1231       }

  1232       /* got eos */

  1233     } else if (ret == GST_FLOW_UNEXPECTED) {

  1234       return GST_FLOW_ERROR_EOS;

  1235     }

  1236   } else {

  1237     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1238       nuv->priv->more_data = TRUE;

  1239       return GST_FLOW_ERROR_NO_DATA;

  1240     }

  1241     if (move) {

  1242       *buffer = gst_adapter_take_buffer (nuv->priv->adapter, size);

  1243     } else {

  1244       guint8 *data = NULL;

  1245       data = (guint8 *) gst_adapter_peek (nuv->priv->adapter, size);

  1246       *buffer = gst_buffer_new ();

  1247       gst_buffer_set_data (*buffer, data, size);

  1248     }

  1249   }

  1250   return ret;

  1251 }

  1253 static GstFlowReturn

  1254 gst_nuv_demux_move_bytes (GstNuvDemux * nuv, guint64 size)

  1255 {

  1256   GstFlowReturn ret = GST_FLOW_OK;

  1258   if (size == 0) {

  1259     return ret;

  1260   }

  1262   if (nuv->priv->mode == NUV_PULL_MODE) {

  1263       nuv->priv->offset += size;

  1264   } else {

  1265     if (gst_adapter_available (nuv->priv->adapter) < size) {

  1266       nuv->priv->more_data = TRUE;

  1267       return GST_FLOW_ERROR_NO_DATA;

  1268     }

  1269     gst_adapter_flush (nuv->priv->adapter, size);

  1270   }

  1271   return ret;

  1272 }

  1274 static gboolean

  1275 gst_nuv_demux_sink_activate (GstPad * sinkpad)

  1276 {

  1277   gboolean res = TRUE;

  1278   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1280   if (gst_pad_check_pull_range (sinkpad)) {

  1281     gst_adapter_clear (nuv->priv->adapter);

  1282     res = gst_pad_activate_pull (sinkpad, TRUE);

  1283   } else {

  1284     gst_adapter_clear (nuv->priv->adapter);

  1285     res = gst_pad_activate_push (sinkpad, TRUE);

  1286   }

  1288   g_object_unref (nuv);

  1289   return res;

  1290 }

  1292 static gboolean

  1293 gst_nuv_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)

  1294 {

  1295   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (sinkpad));

  1297   if (active) {

  1298     GST_DEBUG_OBJECT (nuv, "activating pull function");

  1299     nuv->priv->mode = NUV_PULL_MODE;

  1300     gst_adapter_clear (nuv->priv->adapter);

  1302     gst_pad_start_task (sinkpad, (GstTaskFunction) gst_nuv_demux_loop, sinkpad);

  1303   } else {

  1304     GST_DEBUG_OBJECT (nuv, "deactivating pull function");

  1305     gst_pad_stop_task (sinkpad);

  1306   }

  1307   gst_object_unref (nuv);

  1309   return TRUE;

  1310 }

  1312 static gboolean

  1313 gst_nuv_demux_sink_activate_push (GstPad * pad, gboolean active)

  1314 {

  1315   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1317   if (active) {

  1318     nuv->priv->mode = NUV_PUSH_MODE;

  1319     gst_adapter_clear (nuv->priv->adapter);

  1321     GST_DEBUG_OBJECT (nuv, "activating push/chain function");

  1322   } else {

  1323     GST_DEBUG_OBJECT (nuv, "deactivating push/chain function");

  1324   }

  1326   gst_object_unref (nuv);

  1328   return TRUE;

  1329 }

  1331 static frame_index_data *

  1332 gst_nuv_demux_do_seek_index (GstNuvDemux *nuv, gint64 seek_pos,

  1333   gint64 segment_stop, GstFormat format)

  1334 {

  1335   GSList *l;

  1336   frame_index_data *ret = NULL;

  1338   if (nuv->priv->index == NULL) {

  1339     return NULL;

  1340   }

  1342   /* find keyframe closest to the requested position  */

  1343   for (l = nuv->priv->index; l != NULL; l = l->next) {

  1344     frame_index_data *f = (frame_index_data *) l->data;

  1345     gint64 pos = 0;

  1347     if (format == GST_FORMAT_BYTES) {

  1348       pos = f->offset;

  1349     } else if (format == GST_FORMAT_TIME) {

  1350       pos = f->timecode;

  1351     } else {

  1352       return NULL;

  1353     }

  1355     if (pos >= seek_pos) {

  1356       ret = f;

  1357       break;

  1358     }

  1360     if ((segment_stop != -1) &&  (segment_stop != GST_CLOCK_TIME_NONE) && (pos > segment_stop)) {

  1361       break;

  1362     }

  1363   }

  1365   return ret;

  1366 }

  1368 static gboolean

  1369 gst_nuv_demux_do_seek (GstNuvDemux *nuv, GstEvent * event)

  1370 {

  1371   gdouble rate;

  1372   GstFormat format;

  1373   GstSeekFlags flags;

  1374   GstSeekType cur_type;

  1375   gint64 cur;

  1376   GstSeekType stop_type;

  1377   gint64 stop;

  1378   gboolean flush;

  1379   frame_index_data *entry;

  1380   gint64 segment_start;

  1381   gint64 segment_stop;

  1382   GstEvent *newsegment_event;

  1384   if (nuv->priv->eos) {

  1385     return FALSE;

  1386   }

  1388   if (nuv->priv->mode == NUV_PUSH_MODE) {

  1389     return FALSE;

  1390   }

  1393   gst_event_parse_seek (event, &rate, &format, &flags,

  1394       &cur_type, &cur, &stop_type, &stop);

  1398 /*

  1399   if (format == GST_FORMAT_TIME) {

  1400     GST_DEBUG_OBJECT (nuv, "Can only seek on BYTES");

  1401     return FALSE;

  1402   }

  1403 */

  1405   if (rate <= 0.0) {

  1406     GST_DEBUG_OBJECT (nuv, "Can only seek with positive rate");

  1407     return FALSE;

  1408   }

  1410   if (cur_type == GST_SEEK_TYPE_SET) {

  1411     GST_OBJECT_LOCK (nuv);

  1412     if (gst_nuv_demux_do_seek_index (nuv, cur, -1, format) == NULL) {

  1413       GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1414       GST_OBJECT_UNLOCK (nuv);

  1415       return FALSE;

  1416     }

  1417     GST_OBJECT_UNLOCK (nuv);

  1418   }

  1420   flush = !!(flags & GST_SEEK_FLAG_FLUSH);

  1422   if (flush) {

  1423     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_start ());

  1424     if (nuv->priv->src_video_pad != NULL) {

  1425       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_start ());

  1426     }

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

  1429       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_start ());

  1430     }

  1431   }

  1432   else {

  1433     gst_pad_pause_task (nuv->priv->sinkpad);

  1434   }

  1436   GST_PAD_STREAM_LOCK (nuv->priv->sinkpad);

  1437   GST_OBJECT_LOCK (nuv);

  1440   if (cur == GST_CLOCK_TIME_NONE)

  1441     cur = 0;

  1442   if (stop == GST_CLOCK_TIME_NONE)

  1443     stop = nuv->priv->duration_time;

  1445   if (cur_type == GST_SEEK_TYPE_SET)

  1446     segment_start = cur;

  1447   else if (cur_type == GST_SEEK_TYPE_CUR)

  1448     segment_start = nuv->priv->segment_start + cur;

  1449   else

  1450     segment_start = nuv->priv->segment_start;

  1452   if (stop_type == GST_SEEK_TYPE_SET)

  1453     segment_stop = stop;

  1454   else if (stop_type == GST_SEEK_TYPE_CUR)

  1455     segment_stop = nuv->priv->segment_stop + stop;

  1456   else

  1457     segment_stop = nuv->priv->segment_stop;

  1459   segment_start = CLAMP (segment_start, 0, nuv->priv->duration_time);

  1460   segment_stop = CLAMP (segment_stop, 0, nuv->priv->duration_time);

  1462   entry = gst_nuv_demux_do_seek_index (nuv, segment_start,

  1463       segment_stop, format);

  1465   if (entry == NULL) {

  1466     GST_DEBUG_OBJECT (nuv, "No matching seek entry in index");

  1467     goto seek_error;

  1468   }

  1470   segment_start = entry->timecode;

  1472   nuv->priv->segment_start = segment_start;

  1473   nuv->priv->segment_stop = segment_stop;

  1475   GST_OBJECT_UNLOCK (nuv);

  1477   if (!nuv->priv->eos) {

  1478     GstMessage *msg;

  1479     msg = gst_message_new_segment_start (GST_OBJECT (nuv), GST_FORMAT_TIME,

  1480       nuv->priv->segment_start);

  1482     gst_element_post_message (GST_ELEMENT (nuv), msg);

  1483   }

  1485   GST_DEBUG_OBJECT (nuv, "NEW SEGMENT START %" G_GUINT64_FORMAT ", STOP %" G_GUINT64_FORMAT,

  1486     segment_start, segment_stop);

  1487   newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1488     GST_FORMAT_TIME, segment_start, segment_stop, segment_start);

  1491   if (flush) {

  1492     if (nuv->priv->src_video_pad != NULL) {

  1493       gst_pad_push_event (nuv->priv->src_video_pad, gst_event_new_flush_stop ());

  1494     }

  1496     if (nuv->priv->src_audio_pad != NULL) {

  1497       gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_new_flush_stop ());

  1498     }

  1500     gst_pad_push_event (nuv->priv->sinkpad, gst_event_new_flush_stop ());

  1501   }

  1504   if (nuv->priv->src_video_pad != NULL) {

  1505     gst_pad_push_event (nuv->priv->src_video_pad, gst_event_ref (newsegment_event));

  1506   }

  1507   if (nuv->priv->src_audio_pad != NULL) {

  1508     gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_ref (newsegment_event));

  1509   }

  1511   gst_event_unref (newsegment_event);

  1513   nuv->priv->state = GST_NUV_DEMUX_FRAME_HEADER;

  1514   nuv->priv->offset = entry->offset;

  1516   gst_pad_start_task (nuv->priv->sinkpad, (GstTaskFunction) gst_nuv_demux_loop,

  1517       nuv->priv->sinkpad);

  1519   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1520   return TRUE;

  1522 seek_error:

  1523   GST_DEBUG_OBJECT (nuv, "Got a seek error");

  1524   GST_OBJECT_UNLOCK (nuv);

  1525   GST_PAD_STREAM_UNLOCK (nuv->priv->sinkpad);

  1526   return FALSE;

  1528 }

  1530 static gboolean

  1531 gst_nuv_demux_srcpad_event (GstPad * pad, GstEvent * event)

  1532 {

  1533   gboolean res = FALSE;

  1534   GstNuvDemux *nuv;

  1536   nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1538   switch (GST_EVENT_TYPE (event)) {

  1539     case GST_EVENT_SEEK:

  1540       res = gst_nuv_demux_do_seek (nuv, event);

  1541       break;

  1542     default:

  1543       res = FALSE;

  1544       break;

  1545   }

  1547   gst_object_unref (nuv);

  1548   return res;

  1549 }

  1551 static gboolean

  1552 gst_nuv_demux_sink_event (GstPad * pad, GstEvent * event)

  1553 {

  1554 	gboolean res = FALSE;

  1555 	GstNuvDemux *nuv;

  1557 	nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1559 	switch  (GST_EVENT_TYPE (event)) {

  1560 		case GST_EVENT_NEWSEGMENT:

  1561 		{

  1562 			gboolean update;

  1563 			gdouble rate;

  1564 			GstFormat format;

  1565 			gint64 start;

  1566 			gint64 stop;

  1567 			gint64 position;

  1569 			gst_event_parse_new_segment (event, &update, &rate, &format, &start, &stop, &position);

  1570 			if ((format == GST_FORMAT_BYTES) && (start == 0)) {

  1571 				g_debug ("NEW SEGMENT 0");

  1572 				if (nuv->priv->segment > 0) {

  1573 					nuv->priv->new_file = TRUE;

  1574 					nuv->priv->state = GST_NUV_DEMUX_START;

  1575 					nuv->priv->offset = 0;

  1576 				}

  1577 				nuv->priv->segment++;

  1579 				/*

  1580 				newsegment_event = gst_event_new_new_segment (FALSE, rate,

  1581 				  GST_FORMAT_TIME, 0, GST_CLOCK_TIME_NONE, GST_CLOCK_TIME_NONE);

  1583     			gst_pad_push_event (nuv->priv->src_audio_pad, gst_event_ref (newsegment_event));

  1584     			gst_pad_push_event (nuv->priv->src_video_pad, gst_event_ref (newsegment_event));

  1585   				gst_event_unref (newsegment_event);

  1586 				*/

  1587 				res = gst_pad_event_default(pad, event);

  1588 			}

  1589 			break;

  1590 		}

  1591 		case GST_EVENT_CUSTOM_DOWNSTREAM:

  1592 		{

  1593 			/*

  1594 			nuv->priv->new_file = TRUE;

  1595 			nuv->priv->state = GST_NUV_DEMUX_START;

  1596 			nuv->priv->offset = 0;

  1597 			*/

  1598 			GST_PAD_STREAM_LOCK (pad);

  1599 			gst_nuv_demux_reset( nuv );

  1600 			GST_PAD_STREAM_UNLOCK (pad);

  1602 			res = gst_pad_event_default (pad, event);

  1603 			break;

  1604 		}

  1605 		default:

  1606 			res = gst_pad_event_default (pad, event);

  1607 			break;

  1608 	}

  1610 	return res;

  1611 }

  1613 static GstFlowReturn

  1614 gst_nuv_demux_chain (GstPad * pad, GstBuffer * buf)

  1615 {

  1616   GstFlowReturn ret = GST_FLOW_OK;

  1617   GstNuvDemux *nuv = GST_NUV_DEMUX (gst_pad_get_parent (pad));

  1619   if (nuv->priv->mode != NUV_PUSH_MODE)

  1620     return ret;

  1622   gst_adapter_push (nuv->priv->adapter, buf);

  1624   while ((ret == GST_FLOW_OK) && (nuv->priv->more_data == FALSE)) {

  1625       ret = gst_nuv_demux_play (pad);

  1626   }

  1628   nuv->priv->more_data = FALSE;

  1629   gst_object_unref (nuv);

  1631   return ret;

  1632 }

  1634 static void

  1635 gst_nuv_demux_loop (GstPad * pad)

  1636 {

  1637   gst_nuv_demux_play (pad);

  1638 }

  1640 static void

  1641 gst_nuv_demux_index_free (gpointer data, gpointer user_data)

  1642 {

  1643   g_free (data);

  1644 }

  1646 static void

  1647 gst_nuv_demux_reset (GstNuvDemux * nuv)

  1648 {

  1649   nuv->priv->eos = FALSE;

  1650   nuv->priv->more_data = FALSE;

  1651   nuv->priv->state = GST_NUV_DEMUX_START;

  1652   nuv->priv->mode = NUV_PUSH_MODE;

  1653   nuv->priv->offset = 0;

  1654   nuv->priv->time_start = 0;

  1655   nuv->priv->time_qos = GST_CLOCK_TIME_NONE;

  1656   nuv->priv->duration_bytes = GST_CLOCK_TIME_NONE;

  1657   nuv->priv->duration_time = GST_CLOCK_TIME_NONE;

  1658   nuv->priv->last_video_return = GST_FLOW_OK;

  1659   nuv->priv->last_audio_return = GST_FLOW_OK;

  1660   nuv->priv->header_lengh = 0;

  1661   nuv->priv->segment_stop = GST_CLOCK_TIME_NONE;

  1662   nuv->priv->segment_start = GST_CLOCK_TIME_NONE;

  1663   nuv->priv->new_file = FALSE;

  1665   //clear index list

  1666   g_slist_foreach (nuv->priv->index, gst_nuv_demux_index_free, NULL);

  1667   g_slist_free (nuv->priv->index);

  1668   nuv->priv->index = NULL;

  1670   gst_adapter_clear (nuv->priv->adapter);

  1672   if (nuv->priv->mpeg_buffer != NULL) {

  1673     gst_buffer_unref (nuv->priv->mpeg_buffer);

  1674     nuv->priv->mpeg_buffer = NULL;

  1675   }

  1676 }

  1678 static void

  1679 gst_nuv_demux_destoy_src_pad (GstNuvDemux * nuv)

  1680 {

  1681   if (nuv->priv->src_video_pad) {

  1682     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_video_pad);

  1683     nuv->priv->src_video_pad = NULL;

  1684   }

  1686   if (nuv->priv->src_audio_pad) {

  1687     gst_element_remove_pad (GST_ELEMENT (nuv), nuv->priv->src_audio_pad);

  1688     nuv->priv->src_audio_pad = NULL;

  1689   }

  1690 }

  1692 static GstStateChangeReturn

  1693 gst_nuv_demux_change_state (GstElement * element, GstStateChange transition)

  1694 {

  1695   GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  1697   g_debug ("Nuvdemux state_change");

  1698   switch (transition) {

  1699     case GST_STATE_CHANGE_NULL_TO_READY:

  1700       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1701       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1702       break;

  1703     default:

  1704       break;

  1705   }

  1707   g_debug ("Nuvdemux state_change: 1");

  1709   ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);

  1710   if (ret == GST_STATE_CHANGE_FAILURE) {

  1711     goto done;

  1712   }

  1715   g_debug ("Nuvdemux state_change: 2");

  1717   switch (transition) {

  1718     case GST_STATE_CHANGE_READY_TO_NULL:

  1719       gst_nuv_demux_reset (GST_NUV_DEMUX (element));

  1720       gst_nuv_demux_destoy_src_pad (GST_NUV_DEMUX (element));

  1721       break;

  1722     default:

  1723       break;

  1724   }

  1727   g_debug ("Nuvdemux state_change: DONE");

  1729 done:

  1730   return ret;

  1731 }

  1733 #if (GST_VERSION_MINOR == 10) && (GST_VERSION_MICRO < 6)

  1734 GstBuffer *

  1735 gst_adapter_take_buffer (GstAdapter * adapter, guint nbytes)

  1736 {

  1737   GstBuffer *buffer;

  1738   GstBuffer *cur;

  1739   guint8 *data;

  1741   g_return_val_if_fail (GST_IS_ADAPTER (adapter), NULL);

  1742   g_return_val_if_fail (nbytes > 0, NULL);

  1744   GST_LOG_OBJECT (adapter, "taking buffer of %u bytes", nbytes);

  1746   /* we don't have enough data, return NULL. This is unlikely

  1747    * as one usually does an _available() first instead of peeking a

  1748    * random size. */

  1749   if (G_UNLIKELY (nbytes > adapter->size))

  1750     return NULL;

  1752   /* our head buffer has enough data left, return it */

  1753   cur = adapter->buflist->data;

  1754   if (GST_BUFFER_SIZE (cur) >= nbytes + adapter->skip) {

  1755     GST_LOG_OBJECT (adapter, "providing buffer of %d bytes via sub-buffer",

  1756         nbytes);

  1757     buffer = gst_buffer_create_sub (cur, adapter->skip, nbytes);

  1759     gst_adapter_flush (adapter, nbytes);

  1761     return buffer;

  1762   }

  1764   data = gst_adapter_take (adapter, nbytes);

  1765   if (data == NULL)

  1766     return NULL;

  1768   buffer = gst_buffer_new ();

  1769   GST_BUFFER_DATA (buffer) = data;

  1770   GST_BUFFER_MALLOCDATA (buffer) = data;

  1771   GST_BUFFER_SIZE (buffer) = nbytes;

  1773   return buffer;

  1774 }

  1775 #endif

  1777 static void

  1778 gst_nuv_typefind (GstTypeFind * tf, gpointer unused)

  1779 {

  1780   guint8 *data = gst_type_find_peek (tf, 0, 11);

  1782   if (data) {

  1783     if (memcmp (data, "MythTVVideo", 11) == 0

  1784         || memcmp (data, "NuppelVideo", 11) == 0) {

  1785       gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,

  1786           gst_caps_new_simple ("video/x-nuv", NULL));

  1787     }

  1788   }

  1789 }

  1791 static gboolean

  1792 plugin_init (GstPlugin * plugin)

  1793 {

  1794   static gchar *exts[] = { "nuv", NULL };

  1795 #ifdef ENABLE_NLS

  1796   setlocale (LC_ALL, "");

  1797   bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);

  1798 #endif /* ENABLE_NLS */

  1800   if (!gst_element_register (plugin, "nuvdemux", GST_RANK_SECONDARY,

  1801           GST_TYPE_NUV_DEMUX)) {

  1802     return FALSE;

  1803   }

  1805   if (!gst_type_find_register (plugin, "video/x-nuv", GST_RANK_SECONDARY,

  1806               gst_nuv_typefind,

  1807               exts,

  1808               gst_caps_new_simple ("video/x-nuv", NULL), NULL, NULL)) {

  1809     GST_WARNING ("can't register typefind");

  1810     return FALSE;

  1811   }

  1813   return TRUE;

  1814 }

  1816 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

  1817     GST_VERSION_MINOR,

  1818     "nuvdemux",

  1819     			"Demuxes and muxes audio and video",

  1820      plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

author	renatofilho
	Thu Jun 14 18:19:52 2007 +0100 (2007-06-14)
branch	trunk
changeset 750	312d6bc514f3
parent 720	365a09aee64b
child 751	3cf3c6019e3b
permissions	-rw-r--r--