initial commit for Sierra VMD demuxer (no audio yet)

CVS patchset: 6121
CVS date: 2004/02/05 02:51:14

2 files changed, 508 insertions, 1 deletions

diff --git a/src/demuxers/Makefile.am b/src/demuxers/Makefile.am
index 97c6bb02f..d11a9f75f 100644
--- a/src/demuxers/Makefile.am
+++ b/src/demuxers/Makefile.am
@@ -111,7 +111,8 @@ xineplug_dmx_pva_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
 xineplug_dmx_games_la_SOURCES = group_games.c demux_eawve.c \
 				demux_idcin.c demux_ipmovie.c demux_roq.c \
 				demux_vqa.c demux_wc3movie.c demux_str.c \
-				demux_film.c demux_smjpeg.c demux_4xm.c
+				demux_film.c demux_smjpeg.c demux_4xm.c \
+				demux_vmd.c
 xineplug_dmx_games_la_LIBADD = $(XINE_LIB)
 xineplug_dmx_games_la_LDFLAGS = -avoid-version -module @XINE_PLUGIN_MIN_SYMS@
 
diff --git a/src/demuxers/demux_vmd.c b/src/demuxers/demux_vmd.c
new file mode 100644
index 000000000..f0461a8f3
--- /dev/null
+++ b/src/demuxers/demux_vmd.c
@@ -0,0 +1,506 @@
+/*
+ * Copyright (C) 2004 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * xine is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ */
+
+/*
+ * Sierra Video and Music Data (.vmd) File Demuxer 
+ *   by Mike Melanson (melanson@pcisys.net)
+ * For more information on the VMD file format, visit:
+ *   http://www.pcisys.net/~melanson/codecs/
+ *
+ * Note that the only way that this demuxer validates by content is by
+ * checking the first 2 bytes, which are 0x2E 0x03 in a Sierra VMD file.
+ * There is a 1/65536 chance of a false positive using this method.
+ *
+ * $Id: demux_vmd.c,v 1.1 2004/02/05 02:51:14 tmmm Exp $
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define LOG_MODULE "demux_vmd"
+#define LOG_VERBOSE
+/*
+#define LOG
+*/
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "compat.h"
+#include "demux.h"
+#include "bswap.h"
+#include "group_games.h"
+
+#define VMD_HEADER_SIZE 0x330
+#define BYTES_PER_FRAME_RECORD 16
+
+typedef struct {
+  int is_audio_frame;
+  off_t frame_offset;
+  unsigned int frame_size;
+  int64_t pts;
+  int keyframe;
+  unsigned char frame_record[BYTES_PER_FRAME_RECORD];
+} vmd_frame_t;
+
+typedef struct {
+  demux_plugin_t       demux_plugin;
+
+  xine_stream_t       *stream;
+  fifo_buffer_t       *video_fifo;
+  fifo_buffer_t       *audio_fifo;
+  input_plugin_t      *input;
+  int                  status;
+
+  off_t                data_start;
+  off_t                data_size;
+
+  unsigned char        bih[sizeof(xine_bmiheader) + VMD_HEADER_SIZE];
+  xine_waveformatex    wave;
+
+  unsigned int         audio_frames;
+  unsigned int         iteration;
+
+  unsigned int         frame_count;
+  vmd_frame_t         *frame_table;
+  unsigned int         current_frame;
+
+  int64_t              video_pts_inc;
+  int64_t              total_pts;
+
+} demux_vmd_t ;
+
+typedef struct {
+  demux_class_t     demux_class;
+} demux_vmd_class_t;
+
+/* returns 1 if the VMD file was opened successfully, 0 otherwise */
+static int open_vmd_file(demux_vmd_t *this) {
+
+  xine_bmiheader *bih = (xine_bmiheader *)this->bih;
+  unsigned char *vmd_header = this->bih + sizeof(xine_bmiheader);
+  off_t toc_offset;
+  unsigned char *raw_frame_table;
+  unsigned int raw_frame_table_size;
+  unsigned char *current_frame_record;
+  off_t current_offset;
+  int i;
+  unsigned int total_frames;
+  int64_t current_video_pts = 0;
+
+  if (_x_demux_read_header(this->input, vmd_header, VMD_HEADER_SIZE) != 
+    VMD_HEADER_SIZE)
+    return 0;
+
+  if (LE_16(&vmd_header[0]) != VMD_HEADER_SIZE - 2)
+    return 0;
+
+  /* file is minimally qualified at this point, proceed to load */
+
+  /* get the actual filesize */
+  if ( !(this->data_size = this->input->get_length(this->input)) )
+    this->data_size = 1;
+
+  bih->biSize = sizeof(xine_bmiheader) + VMD_HEADER_SIZE;
+  bih->biWidth = LE_16(&vmd_header[12]);
+  bih->biHeight = LE_16(&vmd_header[14]);
+  this->wave.nSamplesPerSec = LE_16(&vmd_header[804]);
+  this->wave.nChannels =  (vmd_header[811] & 0x80) ? 2 : 1;
+  this->wave.nBlockAlign = LE_16(&vmd_header[806]);
+  if (this->wave.nBlockAlign & 0x8000) {
+      this->wave.nBlockAlign -= 0x8000;
+      this->wave.wBitsPerSample = 16;
+  } else {
+      this->wave.wBitsPerSample = 8;
+  }
+
+  /* decide on a framerate */
+  if (this->wave.nSamplesPerSec) {
+    this->video_pts_inc = 90000;
+    this->video_pts_inc *= this->wave.nBlockAlign;
+    this->video_pts_inc /= this->wave.nSamplesPerSec;
+  } else {
+    this->video_pts_inc = 90000 / 10;
+  }
+
+  /* skip over the offset table and load the table of contents; don't
+   * care about the offset table since demuxer will calculate those
+   * independently */
+  toc_offset = LE_32(&vmd_header[812]);
+  this->frame_count = LE_16(&vmd_header[6]);
+  this->input->seek(this->input, toc_offset + this->frame_count * 6, SEEK_SET);
+
+  /* while we have the toal number of blocks, calculate the total running
+   * time */
+  this->total_pts = this->frame_count;
+  this->total_pts *= this->video_pts_inc;
+  this->total_pts /= 90;
+
+  /* 2 frames for every block reported on disk */
+  this->frame_count *= 2;
+
+  raw_frame_table_size = this->frame_count * BYTES_PER_FRAME_RECORD;
+  raw_frame_table = xine_xmalloc(raw_frame_table_size);
+  if (this->input->read(this->input, raw_frame_table, raw_frame_table_size) !=
+    raw_frame_table_size) {
+    free(raw_frame_table);
+    return 0;
+  }
+
+  this->frame_table = xine_xmalloc(this->frame_count * sizeof(vmd_frame_t));
+
+  current_offset = this->data_start = LE_32(&vmd_header[20]);
+  this->data_size = toc_offset - this->data_start;
+  current_frame_record = raw_frame_table;
+  total_frames = this->frame_count;
+  i = 0;
+  while (total_frames--) {
+    /* if the frame size is 0, do not count the frame and bring the
+     * total frame count down */
+    this->frame_table[i].frame_size = LE_32(&current_frame_record[2]);
+
+    /* this logic is present so that 0-length audio chunks are not
+     * accounted */
+    if (!this->frame_table[i].frame_size) {
+      this->frame_count--;  /* one less frame to count */
+      current_frame_record += BYTES_PER_FRAME_RECORD;
+      continue;
+    }
+
+    if (current_frame_record[0] == 0x02) {
+      this->frame_table[i].is_audio_frame = 0;
+      this->frame_table[i].pts = current_video_pts;
+      current_video_pts += this->video_pts_inc;
+    } else {
+      this->frame_table[i].is_audio_frame = 1;
+      this->frame_table[i].pts = 0;
+    }
+    this->frame_table[i].frame_offset = current_offset;
+    current_offset += this->frame_table[i].frame_size;
+    memcpy(this->frame_table[i].frame_record, current_frame_record,
+      BYTES_PER_FRAME_RECORD);
+
+    current_frame_record += BYTES_PER_FRAME_RECORD;
+    i++;
+  }
+
+  free(raw_frame_table);
+  this->current_frame = 0;
+
+  return 1;
+}
+
+static int demux_vmd_send_chunk(demux_plugin_t *this_gen) {
+
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+  buf_element_t *buf = NULL;
+  unsigned int remaining_bytes;
+  vmd_frame_t *frame;
+
+  if (this->current_frame >= this->frame_count) {
+    this->status = DEMUX_FINISHED;
+    return this->status;
+  }
+
+  frame = &this->frame_table[this->current_frame];
+  /* position the stream (will probably be there already) */
+  this->input->seek(this->input, frame->frame_offset, SEEK_SET);
+  remaining_bytes = frame->frame_size;
+
+  if (!frame->is_audio_frame) {
+
+    /* send off the frame record first in its own buffer */
+    buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
+    buf->type = BUF_VIDEO_VMD;
+    buf->extra_info->input_pos = frame->frame_offset - this->data_start;
+    buf->extra_info->input_length = this->data_size;
+    memcpy(buf->content, frame->frame_record, BYTES_PER_FRAME_RECORD);
+    buf->size = BYTES_PER_FRAME_RECORD;
+    buf->pts = frame->pts;
+    buf->extra_info->input_time = buf->pts / 90;
+    this->video_fifo->put(this->video_fifo, buf);
+
+    while (remaining_bytes) {
+      buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
+      buf->type = BUF_VIDEO_VMD;
+      buf->extra_info->input_pos = frame->frame_offset - this->data_start;
+      buf->extra_info->input_length = this->data_size;
+
+      if (remaining_bytes > buf->max_size)
+        buf->size = buf->max_size;
+      else
+        buf->size = remaining_bytes;
+      remaining_bytes -= buf->size;
+
+      if (!remaining_bytes)
+        buf->decoder_flags |= BUF_FLAG_FRAME_END;
+
+      if (this->input->read(this->input, buf->content, buf->size) !=
+        buf->size) {
+        buf->free_buffer(buf);
+        this->status = DEMUX_FINISHED;
+        break;
+      }
+
+      buf->pts = frame->pts;
+      buf->extra_info->input_time = buf->pts / 90;
+      this->video_fifo->put(this->video_fifo, buf);
+    }
+
+  } else if (frame->is_audio_frame && this->audio_fifo) {
+
+#if 0
+    /* send off the frame record first in its own buffer */
+    buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+    buf->type = BUF_AUDIO_VMD;
+    buf->extra_info->input_pos = frame->frame_offset - this->data_start;
+    buf->extra_info->input_length = this->data_size;
+    memcpy(buf->content, frame->frame_record, BYTES_PER_FRAME_RECORD);
+    buf->size = BYTES_PER_FRAME_RECORD;
+    buf->pts = 0;  /* let the engine sort out the audio pts */
+    buf->extra_info->input_time = 0;
+    this->audio_fifo->put(this->audio_fifo, buf);
+
+    while (remaining_bytes) {
+      buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+      buf->type = BUF_AUDIO_VMD;
+      buf->extra_info->input_pos = frame->frame_offset - this->data_start;
+      buf->extra_info->input_length = this->data_size;
+
+      if (remaining_bytes > buf->max_size)
+        buf->size = buf->max_size;
+      else
+        buf->size = remaining_bytes;
+      remaining_bytes -= buf->size;
+
+      if (!remaining_bytes)
+        buf->decoder_flags |= BUF_FLAG_FRAME_END;
+
+      if (this->input->read(this->input, buf->content, buf->size) !=
+        buf->size) {
+        buf->free_buffer(buf);
+        this->status = DEMUX_FINISHED;
+        break;
+      }
+
+      buf->pts = 0;  /* let the engine sort out the audio pts */
+      buf->extra_info->input_time = 0;
+      this->audio_fifo->put(this->audio_fifo, buf);
+    }
+#endif
+  }
+
+  this->current_frame++;
+
+  return this->status;
+}
+
+static void demux_vmd_send_headers(demux_plugin_t *this_gen) {
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+  buf_element_t *buf;
+  xine_bmiheader *bih = (xine_bmiheader *)this->bih;
+
+  this->video_fifo  = this->stream->video_fifo;
+  this->audio_fifo  = this->stream->audio_fifo;
+
+  this->status = DEMUX_OK;
+
+  /* load stream information */
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_VIDEO, 1);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_HAS_AUDIO,
+                       (this->wave.nSamplesPerSec) ? 1 : 0);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_WIDTH,
+                       bih->biWidth);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_VIDEO_HEIGHT,
+                       bih->biHeight);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_CHANNELS,
+                       this->wave.nChannels);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_SAMPLERATE,
+                       this->wave.nSamplesPerSec);
+  _x_stream_info_set(this->stream, XINE_STREAM_INFO_AUDIO_BITS,
+                       this->wave.wBitsPerSample);
+
+  /* send start buffers */
+  _x_demux_control_start(this->stream);
+
+  /* send init info to decoders */
+  buf = this->video_fifo->buffer_pool_alloc (this->video_fifo);
+  buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_STDHEADER|BUF_FLAG_FRAME_END;
+  buf->decoder_info[0] = 0;
+  buf->decoder_info[1] = this->video_pts_inc;  /* initial duration */
+  memcpy(buf->content, this->bih, sizeof(xine_bmiheader) + VMD_HEADER_SIZE);
+  buf->size = sizeof(xine_bmiheader) + VMD_HEADER_SIZE;
+  buf->type = BUF_VIDEO_VMD;
+  this->video_fifo->put (this->video_fifo, buf);
+
+#if 0
+  if (this->audio_fifo && this->wave.nSamplesPerSec) {
+    buf = this->audio_fifo->buffer_pool_alloc (this->audio_fifo);
+    buf->type = BUF_AUDIO_VMD;
+    buf->decoder_flags = BUF_FLAG_HEADER|BUF_FLAG_STDHEADER|BUF_FLAG_FRAME_END;
+    buf->decoder_info[0] = 0;
+    buf->decoder_info[1] = this->wave.nSamplesPerSec;
+    buf->decoder_info[2] = this->wave.wBitsPerSample;
+    buf->decoder_info[3] = this->wave.nChannels;
+    this->wave.nBlockAlign = (this->wave.wBitsPerSample / 8) * this->wave.nChannels;
+    this->wave.nAvgBytesPerSec = this->wave.nBlockAlign * this->wave.nSamplesPerSec;
+    memcpy(buf->content, &this->wave, sizeof(this->wave));
+    buf->size = sizeof(this->wave);
+    this->audio_fifo->put (this->audio_fifo, buf);
+  }
+#endif
+}
+
+static int demux_vmd_seek (demux_plugin_t *this_gen,
+                           off_t start_pos, int start_time, int playing) {
+
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+
+  /* if thread is not running, initialize demuxer */
+  if( !playing ) {
+    this->status = DEMUX_OK;
+  }
+
+  return this->status;
+}
+
+static void demux_vmd_dispose (demux_plugin_t *this_gen) {
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+
+  free(this);
+}
+
+static int demux_vmd_get_status (demux_plugin_t *this_gen) {
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+
+  return this->status;
+}
+
+static int demux_vmd_get_stream_length (demux_plugin_t *this_gen) {
+  demux_vmd_t *this = (demux_vmd_t *) this_gen;
+
+  return this->total_pts;
+}
+
+static uint32_t demux_vmd_get_capabilities(demux_plugin_t *this_gen) {
+  return DEMUX_CAP_NOCAP;
+}
+
+static int demux_vmd_get_optional_data(demux_plugin_t *this_gen,
+                                       void *data, int data_type) {
+  return DEMUX_OPTIONAL_UNSUPPORTED;
+}
+
+static demux_plugin_t *open_plugin (demux_class_t *class_gen, xine_stream_t *stream,
+                                    input_plugin_t *input) {
+
+  demux_vmd_t    *this;
+
+  this         = xine_xmalloc (sizeof (demux_vmd_t));
+  this->stream = stream;
+  this->input  = input;
+
+  this->demux_plugin.send_headers      = demux_vmd_send_headers;
+  this->demux_plugin.send_chunk        = demux_vmd_send_chunk;
+  this->demux_plugin.seek              = demux_vmd_seek;
+  this->demux_plugin.dispose           = demux_vmd_dispose;
+  this->demux_plugin.get_status        = demux_vmd_get_status;
+  this->demux_plugin.get_stream_length = demux_vmd_get_stream_length;
+  this->demux_plugin.get_capabilities  = demux_vmd_get_capabilities;
+  this->demux_plugin.get_optional_data = demux_vmd_get_optional_data;
+  this->demux_plugin.demux_class       = class_gen;
+
+  this->status = DEMUX_FINISHED;
+
+  switch (stream->content_detection_method) {
+
+  case METHOD_BY_EXTENSION: {
+    char *extensions, *mrl;
+
+    mrl = input->get_mrl (input);
+    extensions = class_gen->get_extensions (class_gen);
+
+    if (!_x_demux_check_extension (mrl, extensions)) {
+      free (this);
+      return NULL;
+    }
+  }
+  /* falling through is intended */
+
+  case METHOD_BY_CONTENT:
+  case METHOD_EXPLICIT:
+
+    if (!open_vmd_file(this)) {
+      free (this);
+      return NULL;
+    }
+
+  break;
+
+  default:
+    free (this);
+    return NULL;
+  }
+
+  return &this->demux_plugin;
+}
+
+static char *get_description (demux_class_t *this_gen) {
+  return "Sierra VMD file demux plugin";
+}
+
+static char *get_identifier (demux_class_t *this_gen) {
+  return "VMD";
+}
+
+static char *get_extensions (demux_class_t *this_gen) {
+  return "vmd";
+}
+
+static char *get_mimetypes (demux_class_t *this_gen) {
+  return NULL;
+}
+
+static void class_dispose (demux_class_t *this_gen) {
+  demux_vmd_class_t *this = (demux_vmd_class_t *) this_gen;
+
+  free (this);
+}
+
+void *demux_vmd_init_plugin (xine_t *xine, void *data) {
+  demux_vmd_class_t     *this;
+
+  this = xine_xmalloc (sizeof (demux_vmd_class_t));
+
+  this->demux_class.open_plugin     = open_plugin;
+  this->demux_class.get_description = get_description;
+  this->demux_class.get_identifier  = get_identifier;
+  this->demux_class.get_mimetypes   = get_mimetypes;
+  this->demux_class.get_extensions  = get_extensions;
+  this->demux_class.dispose         = class_dispose;
+
+  return this;
+}