MNG demuxer added

CVS patchset: 3592
CVS date: 2002/12/20 01:47:01

1 files changed, 403 insertions, 0 deletions

diff --git a/src/demuxers/demux_mng.c b/src/demuxers/demux_mng.c
new file mode 100644
index 000000000..5a16b16c1
--- /dev/null
+++ b/src/demuxers/demux_mng.c
@@ -0,0 +1,403 @@
+/*
+ * Copyright (C) 2000-2002 the xine project
+ *
+ * This file is part of xine, a unix 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
+ *
+ * $Id: demux_mng.c,v 1.1 2002/12/20 01:47:01 komadori Exp $
+ *
+ * demux_mng.c, Demuxer plugin for Multiple-image Network Graphics format
+ *
+ * written and currently maintained by Robin Kay <komadori@myrealbox.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <libmng.h>
+
+#include "xine_internal.h"
+#include "xineutils.h"
+#include "demux.h"
+
+typedef struct {
+  demux_plugin_t demux_plugin;
+  xine_stream_t *stream;
+  config_values_t *config;
+  fifo_buffer_t *video_fifo;
+  input_plugin_t *input;
+
+  int thread_running;
+  int status;
+
+  mng_handle mngh;
+  xine_bmiheader bih;
+  void *image;
+  int started, tick_count, timer_count;
+  
+  char last_mrl[1024];
+} demux_mng_t;
+
+typedef struct {
+  demux_class_t     demux_class;
+
+  /* class-wide, global variables here */
+
+  xine_t           *xine;
+  config_values_t  *config;
+} demux_mng_class_t;
+
+static mng_ptr mymng_alloc(mng_uint32 size)
+{
+  return (mng_ptr)calloc(1, size);
+}
+
+static void mymng_free(mng_ptr p, mng_uint32 size)
+{
+  free(p);
+}
+
+mng_bool mymng_open_stream(mng_handle mngh)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  if (this->input->get_current_pos(this->input) != 0) {
+    if ((this->input->get_capabilities(this->input) & INPUT_CAP_SEEKABLE) == 0) {
+      return MNG_FALSE;
+    }
+    this->input->seek(this->input, 0, SEEK_SET);
+  }
+
+  return MNG_TRUE;
+}
+
+mng_bool mymng_close_stream(mng_handle mngh)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  this->status = DEMUX_FINISHED;
+
+  return MNG_TRUE;
+}
+
+mng_bool mymng_read_stream(mng_handle mngh, mng_ptr buffer, mng_uint32 size, mng_uint32 *bytesread)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  *bytesread = this->input->read(this->input, buffer, size);
+
+  return MNG_TRUE;
+}
+
+mng_bool mymng_process_header(mng_handle mngh, mng_uint32 width, mng_uint32 height)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  this->bih.biWidth = width;
+  this->bih.biHeight = height;
+
+  this->image = malloc(width * height * 3);
+
+  mng_set_canvasstyle(mngh, MNG_CANVAS_RGB8);
+
+  return MNG_TRUE;
+}
+
+mng_uint32 mymng_get_tick_count(mng_handle mngh)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  return this->tick_count;
+}
+
+mng_bool mymng_set_timer(mng_handle mngh, mng_uint32 msecs)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  this->timer_count = msecs;
+
+  return MNG_TRUE;
+}
+
+mng_ptr mymng_get_canvas_line(mng_handle mngh, mng_uint32 line)
+{
+  demux_mng_t *this = (demux_mng_t*)mng_get_userdata(mngh);
+
+  return this->image + line * this->bih.biWidth * 3;
+}
+
+mng_bool mymng_refresh(mng_handle mngh, mng_uint32 x, mng_uint32 y, mng_uint32 w, mng_uint32 h)
+{
+  return MNG_TRUE;
+}
+
+/*
+ * !IMPORTANT! !IMPORTANT! !IMPORTANT! !IMPORTANT! !IMPORTANT!
+ * All the following functions are defined by the xine demuxer API
+ * !IMPORTANT! !IMPORTANT! !IMPORTANT! !IMPORTANT! !IMPORTANT!
+ */
+
+static int demux_mng_send_chunk(demux_mng_t *this)
+{
+  int size = this->bih.biWidth * this->bih.biHeight * 3;
+  void *image_ptr = this->image;
+
+  int err = mng_display_resume(this->mngh);
+  if ((err != MNG_NOERROR) && (err != MNG_NEEDTIMERWAIT)) {
+    fprintf(stderr, "demux_mng: mng_display_resume returned an error (%d)\n", err);
+    this->status = DEMUX_FINISHED;
+  }
+
+  while (size > 0) {
+    buf_element_t *buf;
+
+    buf = this->video_fifo->buffer_pool_alloc(this->video_fifo);
+    buf->type = BUF_VIDEO_RGB;
+    buf->decoder_flags = BUF_FLAG_FRAMERATE;
+    buf->decoder_info[0] = 90 * this->timer_count;
+    buf->input_pos = this->input->get_current_pos(this->input);
+    buf->input_time = this->tick_count / 1000;
+    buf->pts = 90 * this->tick_count;
+
+    if (size > buf->max_size) {
+      buf->size = buf->max_size;
+    }
+    else {
+      buf->size = size;
+    }
+    size -= buf->size;
+
+    memcpy(buf->content, image_ptr, buf->size);
+    image_ptr += buf->size;
+
+    if (size == 0) {
+      buf->decoder_flags |= BUF_FLAG_FRAME_END;
+    }
+
+    this->video_fifo->put(this->video_fifo, buf);
+  }
+
+  this->tick_count += this->timer_count;
+  this->timer_count = 0;
+
+  return this->status;
+}
+
+static void demux_mng_send_headers(demux_mng_t *this)
+{
+  buf_element_t *buf;
+
+  this->video_fifo = this->stream->video_fifo;
+
+  this->status = DEMUX_OK;
+
+  /* load stream information */
+  this->stream->stream_info[XINE_STREAM_INFO_HAS_VIDEO] = 1;
+  this->stream->stream_info[XINE_STREAM_INFO_HAS_AUDIO] = 0;
+  this->stream->stream_info[XINE_STREAM_INFO_VIDEO_WIDTH] = this->bih.biWidth;
+  this->stream->stream_info[XINE_STREAM_INFO_VIDEO_HEIGHT] = this->bih.biHeight;
+
+  /* send start buffers */
+  xine_demux_control_start(this->stream);
+
+  /* send init info to decoder */
+  this->bih.biBitCount = 24;
+  buf = this->video_fifo->buffer_pool_alloc(this->video_fifo);
+  buf->type = BUF_VIDEO_RGB;
+  buf->size = sizeof(xine_bmiheader);
+  memcpy(buf->content, &this->bih, sizeof(xine_bmiheader));
+  buf->decoder_flags = BUF_FLAG_HEADER;
+  this->video_fifo->put(this->video_fifo, buf);
+}
+
+static int demux_mng_seek(demux_mng_t *this, off_t start_pos, int start_time)
+{
+  return this->status;
+}
+
+static void demux_mng_dispose(demux_mng_t *this)
+{
+  mng_cleanup(&this->mngh);
+
+  if (this->image) {
+    free(this->image);
+  }
+
+  free(this);
+}
+
+static int demux_mng_get_status(demux_mng_t *this)
+{
+  return this->status;
+}
+
+static int demux_mng_get_stream_length(demux_mng_t *this)
+{
+  return 0;
+}
+
+static uint32_t demux_mng_get_capabilities(demux_plugin_t *this_gen) {
+  return DEMUX_CAP_NOCAP;
+}
+
+static int demux_mng_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_gen)
+{
+  input_plugin_t *input = (input_plugin_t *) input_gen;
+  demux_mng_t    *this;
+
+  this         = xine_xmalloc (sizeof (demux_mng_t));
+  this->stream = stream;
+  this->input  = input;
+
+  this->demux_plugin.send_headers      = (void*)demux_mng_send_headers;
+  this->demux_plugin.send_chunk        = (void*)demux_mng_send_chunk;
+  this->demux_plugin.seek              = (void*)demux_mng_seek;
+  this->demux_plugin.dispose           = (void*)demux_mng_dispose;
+  this->demux_plugin.get_status        = (void*)demux_mng_get_status;
+  this->demux_plugin.get_stream_length = (void*)demux_mng_get_stream_length;
+  this->demux_plugin.get_video_frame   = NULL;
+  this->demux_plugin.got_video_frame_cb= NULL;
+  this->demux_plugin.get_capabilities  = demux_mng_get_capabilities;
+  this->demux_plugin.get_optional_data = demux_mng_get_optional_data;
+  this->demux_plugin.demux_class       = class_gen;
+
+  this->status = DEMUX_FINISHED;
+
+  switch (stream->content_detection_method) {
+    case METHOD_BY_CONTENT:
+    case METHOD_EXPLICIT:
+      if ((this->input->get_capabilities(this->input) & INPUT_CAP_SEEKABLE) == 0) {
+        free(this);
+        return NULL;
+      }
+    break;
+
+    case METHOD_BY_EXTENSION: {
+      char *ending, *mrl;
+
+      mrl = input->get_mrl(input);
+
+      ending = strrchr(mrl, '.');
+      if (!ending) {
+        free(this);
+        return NULL;
+      }
+
+      if (strncasecmp(ending, ".mng", 4) && strncasecmp(ending, ".png", 4)) {
+        free(this);
+        return NULL;
+      }
+    }
+    break;
+
+    default:
+      free(this);
+      return NULL;
+    break;
+  }
+
+  if ((this->mngh = mng_initialize(this, mymng_alloc, mymng_free, MNG_NULL)) == MNG_NULL) {
+    free(this);
+    return NULL;
+  }
+
+  if (mng_setcb_openstream(this->mngh, mymng_open_stream) ||
+      mng_setcb_closestream(this->mngh, mymng_close_stream) ||
+      mng_setcb_readdata(this->mngh, mymng_read_stream) ||
+      mng_setcb_processheader(this->mngh, mymng_process_header) ||
+      mng_setcb_gettickcount(this->mngh, mymng_get_tick_count) ||
+      mng_setcb_settimer(this->mngh, mymng_set_timer) ||
+      mng_setcb_getcanvasline(this->mngh, mymng_get_canvas_line) ||
+      mng_setcb_refresh(this->mngh, mymng_refresh)) {
+    mng_cleanup(&this->mngh);
+    free(this);
+    return NULL;
+  }
+
+  {
+    int err = mng_readdisplay(this->mngh);
+    if ((err != MNG_NOERROR) && (err != MNG_NEEDTIMERWAIT)) {
+      mng_cleanup(&this->mngh);
+      free(this);
+      return NULL;
+    }
+  }
+
+  strncpy (this->last_mrl, input->get_mrl(input), 1024);
+
+  return &this->demux_plugin;
+}
+
+static char *get_description(demux_class_t *this_gen)
+{
+  return "Multiple-image Network Graphics demux plugin";
+}
+
+static char *get_identifier(demux_class_t *this_gen)
+{
+  return "MNG";
+}
+
+static char *get_extensions(demux_class_t *this_gen)
+{
+  return "png mng";
+}
+
+static char *get_mimetypes(demux_class_t *this_gen)
+{
+  return "image/png: png: PNG image"
+         "image/x-png: png: PNG image"
+         "video/mng: mng: MNG animation"
+         "video/x-mng: mng: MNG animation";
+}
+
+static void class_dispose(demux_class_t *this)
+{
+  free (this);
+}
+
+static void *init_plugin(xine_t *xine, void *data)
+{
+  demux_mng_class_t     *this;
+
+  this         = xine_xmalloc (sizeof (demux_mng_class_t));
+  this->config = xine->config;
+  this->xine   = xine;
+
+  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;
+}
+
+plugin_info_t xine_plugin_info[] = {
+  { PLUGIN_DEMUX, 18, "mng", XINE_VERSION_CODE, NULL, (void*)init_plugin},
+  { PLUGIN_NONE, 0, "", 0, NULL, NULL }
+};