gstreamer/ext/xvid/gstxvid.c

/* GStreamer xvid encoder/decoder plugin
 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <xvid.h>

#include <gst/video/video.h>
#include "gstxviddec.h"
#include "gstxvidenc.h"

gboolean
gst_xvid_init (void)
{
  xvid_gbl_init_t xinit;
  gint ret;
  static gboolean is_init = FALSE;

  /* only init once */
  if (is_init == TRUE) {
    return TRUE;
  }

  /* set up xvid initially (function pointers, CPU flags) */
  gst_xvid_init_struct (xinit);
  if ((ret = xvid_global(NULL, XVID_GBL_INIT, &xinit, NULL)) < 0) {
    g_warning("Failed to initialize XviD: %s (%d)",
	      gst_xvid_error(ret), ret);
    return FALSE;
  }

  GST_LOG ("Initted XviD version %d.%d.%d (API %d.%d)",
	   XVID_VERSION_MAJOR (XVID_VERSION),
	   XVID_VERSION_MINOR (XVID_VERSION),
	   XVID_VERSION_PATCH (XVID_VERSION),
	   XVID_API_MAJOR (XVID_API), XVID_API_MINOR (XVID_API));

  is_init = TRUE;
  return TRUE;
}

gchar *
gst_xvid_error (int errorcode)
{
  gchar *error;

  switch (errorcode) {
    case XVID_ERR_FAIL:
      error = "Operation failed";
      break;
    case 0:
      error = "No error";
      break;
    case XVID_ERR_MEMORY:
      error = "Memory allocation error";
      break;
    case XVID_ERR_FORMAT:
      error = "File format not supported";
      break;
    case XVID_ERR_VERSION:
      error = "Structure version not supported";
      break;
    default:
      error = "Unknown error";
      break;
  }

  return error;
}

gint
gst_xvid_structure_to_csp (GstStructure *structure,
			   gint w, gint *_stride, gint *_bpp)
{
  const gchar *mime = gst_structure_get_name (structure);
  gint xvid_cs = -1, stride = -1, bpp = -1;

  if (!strcmp (mime, "video/x-raw-yuv")) {
    guint32 fourcc;

    gst_structure_get_fourcc (structure, "format", &fourcc);
    switch (fourcc) {
      case GST_MAKE_FOURCC('I','4','2','0'):
        xvid_cs = XVID_CSP_I420;
        stride = w;
        bpp = 12;
        break;
      case GST_MAKE_FOURCC('Y','U','Y','2'):
        xvid_cs = XVID_CSP_YUY2;
        stride = w * 2;
        bpp = 16;
        break;
      case GST_MAKE_FOURCC('Y','V','1','2'):
        xvid_cs = XVID_CSP_YV12;
        stride = w;
        bpp = 12;
        break;
      case GST_MAKE_FOURCC('U','Y','V','Y'):
        xvid_cs = XVID_CSP_UYVY;
        stride = w * 2;
        bpp = 16;
        break;
      case GST_MAKE_FOURCC('Y','V','Y','U'):
        xvid_cs = XVID_CSP_YVYU;
        stride = w * 2;
        bpp = 16;
        break;
    }
  } else {
    gint depth, r_mask;

    gst_structure_get_int(structure, "depth", &depth);
    gst_structure_get_int(structure, "bpp", &bpp);
    gst_structure_get_int(structure, "red_mask", &r_mask);

    switch (depth) {
      case 15:
        xvid_cs = XVID_CSP_RGB555;
        break;
      case 16:
        xvid_cs = XVID_CSP_RGB565;
        break;
      case 24:
        if (bpp == 24) {
          xvid_cs = XVID_CSP_BGR;
        } else {
          switch (r_mask) {
            case 0xff000000:
              xvid_cs = XVID_CSP_RGBA;
              break;
#ifdef XVID_CSP_ARGB
            case 0x00ff0000:
              xvid_cs = XVID_CSP_ARGB;
              break;
#endif
            case 0x0000ff00:
              xvid_cs = XVID_CSP_BGRA;
              break;
            case 0x000000ff:
              xvid_cs = XVID_CSP_ABGR;
              break;
          }
        }
        break;
      default:
        break;
    }

    stride = w * bpp / 8;
  }

  if (_stride)
    *_stride = stride;
  if (_bpp)
    *_bpp = bpp;

  return xvid_cs;
}

GstCaps *
gst_xvid_csp_to_caps (gint csp, gint w, gint h, gdouble fps)
{
  GstCaps *caps = NULL;

  switch (csp) {
    case XVID_CSP_RGB555:
    case XVID_CSP_RGB565:
    case XVID_CSP_BGR:
    case XVID_CSP_ABGR:
    case XVID_CSP_BGRA:
#ifdef XVID_CSP_ARGB
    case XVID_CSP_ARGB:
#endif
    case XVID_CSP_RGBA: {
      gint r_mask = 0, b_mask = 0, g_mask = 0,
	   endianness = 0, bpp = 0, depth = 0;

      switch (csp) {
        case XVID_CSP_RGB555:
          r_mask = GST_VIDEO_RED_MASK_15_INT;
          g_mask = GST_VIDEO_GREEN_MASK_15_INT;
          b_mask = GST_VIDEO_BLUE_MASK_15_INT;
          endianness = G_BYTE_ORDER; depth = 15; bpp = 16;
          break;
        case XVID_CSP_RGB565:
          r_mask = GST_VIDEO_RED_MASK_16_INT;
          g_mask = GST_VIDEO_GREEN_MASK_16_INT;
          b_mask = GST_VIDEO_BLUE_MASK_16_INT;
          endianness = G_BYTE_ORDER; depth = 16; bpp = 16;
          break;
        case XVID_CSP_BGR:
          r_mask = 0x0000ff; g_mask = 0x00ff00; b_mask = 0xff0000;
          endianness = G_BIG_ENDIAN; depth = 24; bpp = 24;
          break;
        case XVID_CSP_ABGR:
          r_mask = 0x000000ff; g_mask = 0x0000ff00; b_mask = 0x00ff0000;
          endianness = G_BIG_ENDIAN; depth = 24; bpp = 32;
          break;
        case XVID_CSP_BGRA:
          r_mask = 0x0000ff00; g_mask = 0x00ff0000; b_mask = 0xff000000;
          endianness = G_BIG_ENDIAN; depth = 24; bpp = 32;
          break;
#ifdef XVID_CSP_ARGB
        case XVID_CSP_ARGB:
          r_mask = 0x00ff0000; g_mask = 0x0000ff00; b_mask = 0x000000ff;
          endianness = G_BIG_ENDIAN; depth = 24; bpp = 32;
          break;
#endif
        case XVID_CSP_RGBA:
          r_mask = 0xff000000; g_mask = 0x00ff0000; b_mask = 0x0000ff00;
          endianness = G_BIG_ENDIAN; depth = 24; bpp = 32;
          break;
      }

      caps = gst_caps_new_simple ("video/x-raw-rgb",
                            "width",      G_TYPE_INT, w,
                            "height",     G_TYPE_INT, h,
                            "depth",      G_TYPE_INT, depth,
                            "bpp",        G_TYPE_INT, bpp,
                            "endianness", G_TYPE_INT, endianness,
                            "red_mask",   G_TYPE_INT, r_mask,
                            "green_mask", G_TYPE_INT, g_mask,
                            "blue_mask",  G_TYPE_INT, b_mask,
			    "framerate",  G_TYPE_DOUBLE, fps,
                            NULL);
      break;
    }

    case XVID_CSP_YUY2:
    case XVID_CSP_YVYU:
    case XVID_CSP_UYVY:
    case XVID_CSP_I420:
    case XVID_CSP_YV12: {
      guint32 fourcc = 0;

      switch (csp) {
        case XVID_CSP_YUY2:
          fourcc = GST_MAKE_FOURCC ('Y','U','Y','2');
          break;
        case XVID_CSP_YVYU:
          fourcc = GST_MAKE_FOURCC ('Y','V','Y','U');
          break;
        case XVID_CSP_UYVY:
          fourcc = GST_MAKE_FOURCC ('U','Y','V','Y');
          break;
        case XVID_CSP_I420:
          fourcc = GST_MAKE_FOURCC ('I','4','2','0');
          break;
        case XVID_CSP_YV12:
          fourcc = GST_MAKE_FOURCC ('Y','V','1','2');
          break;
      }

      caps = gst_caps_new_simple ("video/x-raw-yuv",
                            "width",      G_TYPE_INT, w,
                            "height",     G_TYPE_INT, h,
                            "format",     GST_TYPE_FOURCC, fourcc,
			    "framerate",  G_TYPE_DOUBLE, fps,
                            NULL);
      break;
    }
  }

  return caps;
}


static gboolean
plugin_init (GstPlugin *plugin)
{
  return (gst_element_register (plugin, "xvidenc",
				GST_RANK_NONE, GST_TYPE_XVIDENC) &&
	  gst_element_register (plugin, "xviddec",
				GST_RANK_NONE, GST_TYPE_XVIDDEC));
}

GST_PLUGIN_DEFINE (
  GST_VERSION_MAJOR,
  GST_VERSION_MINOR,
  "xvid",
  "XviD plugin library",
  plugin_init,
  VERSION,
  "GPL",
  GST_PACKAGE,
  GST_ORIGIN
)