Ejemplo n.º 1
0
static int
parse_set_palette (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
    guint16 len)
{
  SpuState *state = &dvdspu->spu_state;

  const gint PGS_PALETTE_ENTRY_SIZE = 5;
  guint8 *end = payload + len;
  guint8 palette_id G_GNUC_UNUSED;
  guint8 palette_version G_GNUC_UNUSED;
  gint n_entries, i;

  if (len < 2)                  /* Palette command too short */
    return 0;
  palette_id = payload[0];
  palette_version = payload[1];
  payload += 2;

  n_entries = (len - 2) / PGS_PALETTE_ENTRY_SIZE;

  PGS_DUMP ("Palette ID %u version %u. %d entries\n",
      palette_id, palette_version, n_entries);
  for (i = 0; i < 256; i++)
    state->pgs.palette[i].A = 0;
  for (i = 0; i < n_entries; i++) {
    guint8 n, Y, U, V, A;
    n = payload[0];
    Y = payload[1];
    U = payload[2];
    V = payload[3];
    A = payload[4];

#if DUMP_FULL_PALETTE
    PGS_DUMP ("Entry %3d: Y %3d U %3d V %3d A %3d  ", n, Y, U, V, A);
    if (((i + 1) % 2) == 0)
      PGS_DUMP ("\n");
#endif

    /* Premultiply the palette entries by the alpha */
    state->pgs.palette[n].Y = Y * A;
    state->pgs.palette[n].U = U * A;
    state->pgs.palette[n].V = V * A;
    state->pgs.palette[n].A = A;

    payload += PGS_PALETTE_ENTRY_SIZE;
  }

#if DUMP_FULL_PALETTE
  if (n_entries > 0 && (i % 2))
    PGS_DUMP ("\n");
#endif

  if (payload != end) {
    GST_ERROR ("PGS Set Palette: %" G_GSSIZE_FORMAT " bytes not consumed",
        (gssize) (end - payload));
    dump_bytes (payload, end - payload);
  }

  return 0;
}
Ejemplo n.º 2
0
static void
dump_bytes (guint8 * data, guint16 len)
{
  gint i;

  /* Dump the numbers */
  for (i = 0; i < len; i++) {
    PGS_DUMP ("0x%02x ", data[i]);
    if (!((i + 1) % 16))
      PGS_DUMP ("\n");
  }
  if (len > 0 && (i % 16))
    PGS_DUMP ("\n");
}
Ejemplo n.º 3
0
gint
gstspu_exec_pgs_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
{
  GstMapInfo map;
  guint8 *pos, *end;
  guint8 type;
  guint16 packet_len;

  gst_buffer_map (buf, &map, GST_MAP_READ);

  pos = map.data;
  end = pos + map.size;

  /* Need at least 3 bytes */
  if (pos + 3 > end) {
    PGS_DUMP ("Not enough bytes to be a PGS packet\n");
    goto error;
  }

  PGS_DUMP ("Begin dumping command buffer of size %u ts %" GST_TIME_FORMAT "\n",
      end - pos, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
  do {
    type = *pos++;
    packet_len = GST_READ_UINT16_BE (pos);
    pos += 2;

    if (pos + packet_len > end) {
      gst_buffer_unmap (buf, &map);
      PGS_DUMP ("Invalid packet length %u (only have %u bytes)\n", packet_len,
          end - pos);
      goto error;
    }

    if (parse_pgs_packet (dvdspu, type, pos, packet_len))
      goto error;

    pos += packet_len;
  } while (pos + 3 <= end);

  PGS_DUMP ("End dumping command buffer with %u bytes remaining\n", end - pos);
  return (pos - map.data);

  /* ERRORS */
error:
  {
    gst_buffer_unmap (buf, &map);
    return -1;
  }
}
Ejemplo n.º 4
0
static int
parse_pgs_packet (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
    guint16 len)
{
  SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
  int ret = 0;

  if (!pgs_state->in_presentation_segment
      && type != PGS_COMMAND_PRESENTATION_SEGMENT) {
    PGS_DUMP ("Expected BEGIN PRESENTATION SEGMENT command. "
        "Got command type 0x%02x len %u. Skipping\n", type, len);
    return 0;
  }

  switch (type) {
    case PGS_COMMAND_PRESENTATION_SEGMENT:
      PGS_DUMP ("*******************************************\n"
          "Begin PRESENTATION_SEGMENT (0x%02x) packet len %u\n", type, len);
      pgs_state->in_presentation_segment =
          pgs_state->have_presentation_segment = TRUE;
      ret = parse_presentation_segment (dvdspu, type, payload, len);
      break;
    case PGS_COMMAND_SET_OBJECT_DATA:
      PGS_DUMP ("***   Set Object Data (0x%02x) packet len %u\n", type, len);
      ret = parse_set_object_data (dvdspu, type, payload, len);
      break;
    case PGS_COMMAND_SET_PALETTE:
      PGS_DUMP ("***   Set Palette (0x%02x) packet len %u\n", type, len);
      ret = parse_set_palette (dvdspu, type, payload, len);
      break;
    case PGS_COMMAND_SET_WINDOW:
      PGS_DUMP ("***   Set Window command (0x%02x) packet len %u\n", type, len);
      ret = parse_set_window (dvdspu, type, payload, len);
      break;
    case PGS_COMMAND_INTERACTIVE_SEGMENT:
      PGS_DUMP ("***   Interactive Segment command(0x%02x) packet len %u\n",
          type, len);
      dump_bytes (payload, len);
      break;
    case PGS_COMMAND_END_DISPLAY:
      PGS_DUMP ("***   End Display command (0x%02x) packet len %u\n", type,
          len);
      pgs_state->in_presentation_segment = FALSE;
      break;
    default:
      GST_ERROR ("Unknown PGS command: type 0x%02x len %u", type, len);
      dump_bytes (payload, len);
      break;
  }
  PGS_DUMP ("\n");

  return ret;
}
Ejemplo n.º 5
0
gint
gstspu_exec_pgs_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
{
  guint8 *pos, *end;
  guint8 type;
  guint16 packet_len;

  pos = GST_BUFFER_DATA (buf);
  end = pos + GST_BUFFER_SIZE (buf);

  /* Need at least 3 bytes */
  if (pos + 3 > end) {
    PGS_DUMP ("Not enough bytes to be a PGS packet\n");
    return -1;
  }

  PGS_DUMP ("Begin dumping command buffer of size %u ts %" GST_TIME_FORMAT "\n",
      end - pos, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
  do {
    type = *pos++;
    packet_len = GST_READ_UINT16_BE (pos);
    pos += 2;

    if (pos + packet_len > end) {
      PGS_DUMP ("Invalid packet length %u (only have %u bytes)\n", packet_len,
          end - pos);
      return -1;
    }

    if (parse_pgs_packet (dvdspu, type, pos, packet_len))
      return -1;

    pos += packet_len;
  } while (pos + 3 <= end);

  PGS_DUMP ("End dumping command buffer with %u bytes remaining\n", end - pos);
  return (pos - GST_BUFFER_DATA (buf));
}
Ejemplo n.º 6
0
static int
parse_set_window (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
    guint16 len)
{
  SpuState *state = &dvdspu->spu_state;
  guint8 *end = payload + len;
  guint8 win_count, win_id G_GNUC_UNUSED;
  gint i;

  if (payload + 1 > end)
    return 0;

  dump_bytes (payload, len);

  win_count = payload[0];
  payload++;

  for (i = 0; i < win_count; i++) {
    if (payload + 9 > end)
      return 0;

    /* FIXME: Store each window ID separately into an array */
    win_id = payload[0];
    state->pgs.win_x = GST_READ_UINT16_BE (payload + 1);
    state->pgs.win_y = GST_READ_UINT16_BE (payload + 3);
    state->pgs.win_w = GST_READ_UINT16_BE (payload + 5);
    state->pgs.win_h = GST_READ_UINT16_BE (payload + 7);
    payload += 9;

    PGS_DUMP ("Win ID %u x %d y %d w %d h %d\n",
        win_id, state->pgs.win_x, state->pgs.win_y, state->pgs.win_w,
        state->pgs.win_h);
  }

  if (payload != end) {
    GST_ERROR ("PGS Set Window: %" G_GSSIZE_FORMAT " bytes not consumed",
        (gssize) (end - payload));
    dump_bytes (payload, end - payload);
  }

  return 0;
}
Ejemplo n.º 7
0
static void
dump_rle_data (GstDVDSpu * dvdspu, guint8 * data, guint32 len)
{
  guint16 obj_h G_GNUC_UNUSED;
  guint16 obj_w;
  guint8 *end = data + len;
  guint x = 0;

  if (data + 4 > end)
    return;

  /* RLE data: */
  obj_w = GST_READ_UINT16_BE (data);
  obj_h = GST_READ_UINT16_BE (data + 2);
  data += 4;
  PGS_DUMP ("RLE image is %ux%u\n", obj_w, obj_h);

  while (data < end) {
    guint8 pal_id;
    guint16 run_len;

    pal_id = *data++;
    if (pal_id != 0) {
      // PGS_DUMP ("data 0x%02x\n", data[0]);
      run_len = 1;
    } else {
      if (data + 1 > end)
        return;
      switch (data[0] & 0xC0) {
        case 0x00:
          //PGS_DUMP ("data 0x%02x\n", data[0]);
          run_len = (data[0] & 0x3f);
          data++;
          break;
        case 0x40:
          if (data + 2 > end)
            return;
          //PGS_DUMP ("data 0x%02x 0x%02x\n", data[0], data[1]);
          run_len = ((data[0] << 8) | data[1]) & 0x3fff;
          data += 2;
          break;
        case 0x80:
          if (data + 2 > end)
            return;
          //PGS_DUMP ("data 0x%02x 0x%02x\n", data[0], data[1]);
          run_len = (data[0] & 0x3f);
          pal_id = data[1];
          data += 2;
          break;
        case 0xC0:
          if (data + 3 > end)
            return;
          //PGS_DUMP ("data 0x%02x 0x%02x 0x%02x\n", data[0], data[1], data[2]);
          run_len = ((data[0] << 8) | data[1]) & 0x3fff;
          pal_id = data[2];
          data += 3;
          break;
        default:
          run_len = 0;
          break;
      }
    }

#if DUMP_FULL_IMAGE
    {
      gint i;
#if 1
      if (dvdspu->spu_state.pgs.palette[pal_id].A) {
        guint8 val = dvdspu->spu_state.pgs.palette[pal_id].A;
        for (i = 0; i < run_len; i++)
          PGS_DUMP ("%02x ", val);
      } else {
        for (i = 0; i < run_len; i++)
          PGS_DUMP ("   ");
      }
      if (!run_len || (x + run_len) > obj_w)
        PGS_DUMP ("\n");
#else
      PGS_DUMP ("Run x: %d pix: %d col: %d\n", x, run_len, pal_id);
#endif
    }
#endif

    x += run_len;
    if (!run_len || x > obj_w)
      x = 0;
  };

  PGS_DUMP ("\n");
}
Ejemplo n.º 8
0
static int
parse_set_object_data (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
    guint16 len)
{
  SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
  PgsCompositionObject *obj;
  guint8 *end = payload + len;
  guint16 obj_id;
  guint8 obj_ver, flags;

  if (payload + 4 > end)
    return 0;

  obj_id = GST_READ_UINT16_BE (payload);
  obj_ver = payload[2];
  flags = payload[3];
  payload += 4;

  obj = pgs_presentation_segment_find_object (&(pgs_state->pres_seg), obj_id);

  PGS_DUMP ("Object ID %d ver %u flags 0x%02x\n", obj_id, obj_ver, flags);

  if (flags & PGS_OBJECT_UPDATE_FLAG_START_RLE) {
    obj->rle_data_ver = obj_ver;

    if (payload + 3 > end)
      return 0;

    obj->rle_data_size = GST_READ_UINT24_BE (payload);
    payload += 3;

    PGS_DUMP ("%d bytes of RLE data, of %d bytes total.\n",
        end - payload, obj->rle_data_size);

    obj->rle_data = g_realloc (obj->rle_data, obj->rle_data_size);
    obj->rle_data_used = end - payload;
    memcpy (obj->rle_data, payload, end - payload);
    payload = end;
  } else {
    PGS_DUMP ("%d bytes of additional RLE data\n", end - payload);
    /* Check that the data chunk is for this object version, and fits in the buffer */
    if (obj->rle_data_ver == obj_ver &&
        obj->rle_data_used + end - payload <= obj->rle_data_size) {

      memcpy (obj->rle_data + obj->rle_data_used, payload, end - payload);
      obj->rle_data_used += end - payload;
      payload = end;
    }
  }

  if (obj->rle_data_size == obj->rle_data_used)
    dump_rle_data (dvdspu, obj->rle_data, obj->rle_data_size);

  if (payload != end) {
    GST_ERROR ("PGS Set Object Data: %" G_GSSIZE_FORMAT " bytes not consumed",
        (gssize) (end - payload));
    dump_bytes (payload, end - payload);
  }

  return 0;
}
Ejemplo n.º 9
0
static int
parse_presentation_segment (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
    guint16 len)
{
  guint8 *end = payload + len;
  PgsPresentationSegment *ps = &dvdspu->spu_state.pgs.pres_seg;
  guint8 n_objects, palette_id;
  gint i;

  /* Parse video descriptor */
  if (payload + 5 > end)
    return 0;

  ps->vid_w = GST_READ_UINT16_BE (payload);
  ps->vid_h = GST_READ_UINT16_BE (payload + 2);
  ps->vid_fps_code = payload[4];
  payload += 5;

  /* Parse composition descriptor */
  if (payload + 3 > end)
    return 0;
  ps->composition_no = GST_READ_UINT16_BE (payload);
  ps->composition_state = payload[2];
  payload += 3;

  /* Parse other bits */
  if (payload + 3 > end)
    return 0;

  ps->flags = payload[0];

  palette_id = payload[1];
  n_objects = payload[2];
  payload += 3;

  if (ps->flags & PGS_PRES_SEGMENT_FLAG_UPDATE_PALETTE)
    ps->palette_id = palette_id;

  PGS_DUMP ("Video width %u height %u fps code %u\n", ps->vid_w, ps->vid_h,
      ps->vid_fps_code);
  PGS_DUMP
      ("Composition num %u state 0x%02x flags 0x%02x palette id %u n_objects %u\n",
      ps->composition_no, ps->composition_state, ps->flags, ps->palette_id,
      n_objects);

  pgs_presentation_segment_set_object_count (ps, n_objects);

  for (i = 0; i < (gint) n_objects; i++) {
    PgsCompositionObject *obj =
        &g_array_index (ps->objects, PgsCompositionObject, i);

    if (payload + 8 > end)
      break;
    obj->id = GST_READ_UINT16_BE (payload);
    obj->win_id = payload[2];
    obj->flags = payload[3];
    obj->x = GST_READ_UINT16_BE (payload + 4);
    obj->y = GST_READ_UINT16_BE (payload + 6);
    obj->rle_data_size = obj->rle_data_used = 0;

    payload += 8;

    PGS_DUMP ("Composition object %d Object ID %u Window ID %u flags 0x%02x "
        "x %u y %u\n", i, obj->id, obj->win_id, obj->flags, obj->x, obj->y);

    if (obj->flags & PGS_COMPOSITION_OBJECT_FLAG_CROPPED) {
      if (payload + 8 > end)
        break;

      obj->crop_x = GST_READ_UINT16_BE (payload);
      obj->crop_y = GST_READ_UINT16_BE (payload + 2);
      obj->crop_w = GST_READ_UINT16_BE (payload + 4);
      obj->crop_h = GST_READ_UINT16_BE (payload + 6);

      payload += 8;

      PGS_DUMP ("Cropping window x %u y %u w %u h %u\n",
          obj->crop_x, obj->crop_y, obj->crop_w, obj->crop_h);
    }

    if (obj->flags & ~(PGS_COMPOSITION_OBJECT_FLAG_CROPPED |
            PGS_COMPOSITION_OBJECT_FLAG_FORCED))
      GST_ERROR ("PGS Composition Object has unknown flags: 0x%02x",
          obj->flags);
  }

  if (payload != end) {
    GST_ERROR ("PGS Composition Object: %" G_GSSIZE_FORMAT
        " bytes not consumed", (gssize) (end - payload));
    dump_bytes (payload, end - payload);
  }

  return 0;
}