Пример #1
0
gboolean
gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
    GstGLBaseBuffer * dest, gssize offset, gssize size)
{
  const GstGLFuncs *gl = src->context->gl_vtable;
  GstMapInfo sinfo, dinfo;

  if (!gl->CopyBufferSubData)
    /* This is GL(ES) 3.0+ only */
    return FALSE;

  if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ | GST_MAP_GL)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
        "failed to read map source memory %p", src);
    return FALSE;
  }

  if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE | GST_MAP_GL)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
        "failed to write map destination memory %p", dest);
    gst_memory_unmap ((GstMemory *) src, &sinfo);
    return FALSE;
  }

  gl->BindBuffer (GL_COPY_READ_BUFFER, src->id);
  gl->BindBuffer (GL_COPY_WRITE_BUFFER, dest->id);
  gl->CopyBufferSubData (GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
      offset, 0, size);

  gst_memory_unmap ((GstMemory *) src, &sinfo);
  gst_memory_unmap ((GstMemory *) dest, &dinfo);

  return TRUE;
}
Пример #2
0
static GstMemory *
_fallback_mem_copy (GstMemory * mem, gssize offset, gssize size)
{
  GstMemory *copy;
  GstMapInfo sinfo, dinfo;
  GstAllocationParams params = { 0, mem->align, 0, 0, };
  GstAllocator *allocator;

  if (!gst_memory_map (mem, &sinfo, GST_MAP_READ))
    return NULL;

  if (size == -1)
    size = sinfo.size > offset ? sinfo.size - offset : 0;

  /* use the same allocator as the memory we copy  */
  allocator = mem->allocator;
  if (GST_OBJECT_FLAG_IS_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC))
    allocator = NULL;
  copy = gst_allocator_alloc (allocator, size, &params);

  if (!gst_memory_map (copy, &dinfo, GST_MAP_WRITE)) {
    GST_CAT_WARNING (GST_CAT_MEMORY, "could not write map memory %p", copy);
    gst_allocator_free (mem->allocator, copy);
    gst_memory_unmap (mem, &sinfo);
    return NULL;
  }

  GST_CAT_DEBUG (GST_CAT_PERFORMANCE,
      "memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, mem, copy);
  memcpy (dinfo.data, sinfo.data + offset, size);
  gst_memory_unmap (copy, &dinfo);
  gst_memory_unmap (mem, &sinfo);

  return copy;
}
Пример #3
0
/**
 * gst_gl_base_memory_memcpy:
 * @src: the source #GstGLBaseMemory
 * @dest: the destination #GstGLBaseMemory
 * @offset: the offset to start at
 * @size: the number of bytes to copy
 *
 * Returns: whether the copy suceeded.
 */
gboolean
gst_gl_base_memory_memcpy (GstGLBaseMemory * src, GstGLBaseMemory * dest,
    gssize offset, gssize size)
{
  GstMapInfo sinfo, dinfo;

  if (!gst_gl_base_memory_alloc_data (GST_GL_BASE_MEMORY_CAST (dest)))
    return FALSE;

  if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_MEMORY,
        "could not read map source memory %p", src);
    return FALSE;
  }

  if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_MEMORY,
        "could not write map dest memory %p", dest);
    gst_memory_unmap ((GstMemory *) src, &sinfo);
    return FALSE;
  }

  if (size == -1)
    size = sinfo.size > offset ? sinfo.size - offset : 0;

  GST_CAT_DEBUG (GST_CAT_GL_BASE_MEMORY,
      "memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
  memcpy (dinfo.data, sinfo.data + offset, size);
  gst_memory_unmap ((GstMemory *) dest, &dinfo);
  gst_memory_unmap ((GstMemory *) src, &sinfo);

  return TRUE;
}
/**
 * gst_memory_make_mapped:
 * @mem: (transfer full): a #GstMemory
 * @info: (out): pointer for info
 * @flags: mapping flags
 *
 * Create a #GstMemory object that is mapped with @flags. If @mem is mappable
 * with @flags, this function returns the mapped @mem directly. Otherwise a
 * mapped copy of @mem is returned.
 *
 * This function takes ownership of old @mem and returns a reference to a new
 * #GstMemory.
 *
 * Returns: (transfer full) (nullable): a #GstMemory object mapped
 * with @flags or %NULL when a mapping is not possible.
 */
GstMemory *
gst_memory_make_mapped (GstMemory * mem, GstMapInfo * info, GstMapFlags flags)
{
  GstMemory *result;

  if (gst_memory_map (mem, info, flags)) {
    result = mem;
  } else {
    result = gst_memory_copy (mem, 0, -1);
    gst_memory_unref (mem);

    if (result == NULL)
      goto cannot_copy;

    if (!gst_memory_map (result, info, flags))
      goto cannot_map;
  }
  return result;

  /* ERRORS */
cannot_copy:
  {
    GST_CAT_DEBUG (GST_CAT_MEMORY, "cannot copy memory %p", mem);
    return NULL;
  }
cannot_map:
  {
    GST_CAT_DEBUG (GST_CAT_MEMORY, "cannot map memory %p with flags %d", mem,
        flags);
    gst_memory_unref (result);
    return NULL;
  }
}
Пример #5
0
gboolean
gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src, GstGLBaseBuffer * dest,
    gssize offset, gssize size)
{
  GstMapInfo sinfo, dinfo;

  if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
        "could not read map source memory %p", src);
    return FALSE;
  }

  if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
    GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
        "could not write map dest memory %p", dest);
    gst_memory_unmap ((GstMemory *) src, &sinfo);
    return FALSE;
  }

  GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER,
      "memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
  memcpy (dinfo.data, sinfo.data + offset, size);
  gst_memory_unmap ((GstMemory *) dest, &dinfo);
  gst_memory_unmap ((GstMemory *) src, &sinfo);

  return TRUE;
}
Пример #6
0
GstFlowReturn on_new_preroll(GstAppSink *appsink, gpointer user_data) {
	GstSample* sample = NULL;
	GstBuffer* buffer;
	GstMemory* memory;
	GstMapInfo info;
	GstClockTime clocktime;

	g_debug("on_new_preroll ");
	sample = gst_app_sink_pull_sample (appsink);
	if (sample) {
		g_debug("pulled sample\n");
		buffer = gst_sample_get_buffer(sample);
		clocktime = GST_BUFFER_PTS(buffer);
		memory = gst_buffer_get_memory(buffer, 0);
		gst_memory_map(memory, &info, GST_MAP_READ);
		/*
			You can access raw memory at info.data
		*/
		if(app.output_callback)
			app.output_callback(info.data, info.size);
		//fwrite(info.data, 1, info.size, app.outfile);

		gst_memory_unmap(memory, &info);
		gst_memory_unref(memory);
		gst_sample_unref(sample);
	}
	return GST_FLOW_OK;
}
Пример #7
0
static void
user_write_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
{
  GstPngEnc *pngenc;
  GstMemory *mem;
  GstMapInfo minfo;

  pngenc = (GstPngEnc *) png_get_io_ptr (png_ptr);

  mem = gst_allocator_alloc (NULL, length, NULL);
  if (!mem) {
    GST_ERROR_OBJECT (pngenc, "Failed to allocate memory");
    png_error (png_ptr, "Failed to allocate memory");

    /* never reached */
    return;
  }

  if (!gst_memory_map (mem, &minfo, GST_MAP_WRITE)) {
    GST_ERROR_OBJECT (pngenc, "Failed to map memory");
    gst_memory_unref (mem);

    png_error (png_ptr, "Failed to map memory");

    /* never reached */
    return;
  }

  memcpy (minfo.data, data, length);
  gst_memory_unmap (mem, &minfo);

  gst_buffer_append_memory (pngenc->buffer_out, mem);
}
Пример #8
0
static gpointer
_gl_mem_map_gpu_access (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
  gpointer data = &gl_mem->mem.tex_id;

  if ((info->flags & GST_MAP_READ) == GST_MAP_READ) {
    if (gl_mem->pbo && CONTEXT_SUPPORTS_PBO_UPLOAD (gl_mem->mem.mem.context)) {
      GstMapInfo pbo_info;

      /* data -> pbo */
      if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info,
              GST_MAP_READ | GST_MAP_GL)) {
        GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
        return NULL;
      }

      /* pbo -> texture */
      _upload_pbo_memory (gl_mem, info, gl_mem->pbo, &pbo_info);

      gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
    } else {
      GstGLMemoryAllocatorClass *alloc_class;

      alloc_class = GST_GL_MEMORY_ALLOCATOR_CLASS (parent_class);

      data = alloc_class->map ((GstGLBaseMemory *) gl_mem, info, size);
    }
  }

  return data;
}
Пример #9
0
void
groj_config_set_time(GstMemory *cmem, double time){
  GstMapInfo info;
  gst_memory_map (cmem, &info, GST_MAP_WRITE);
  ((struct RojConfig *)info.data)->time = time;
  gst_memory_unmap (cmem, &info);    
}
Пример #10
0
void
groj_config_set_number(GstMemory *cmem, unsigned long number){
  GstMapInfo info;
  gst_memory_map (cmem, &info, GST_MAP_WRITE);
  ((struct RojConfig *)info.data)->number = number;
  gst_memory_unmap (cmem, &info);    
}
Пример #11
0
static GstMemory *
_gl_mem_copy (GstGLMemoryPBO * src, gssize offset, gssize size)
{
  GstAllocationParams params = { 0, GST_MEMORY_CAST (src)->align, 0, 0 };
  GstGLBaseMemoryAllocator *base_mem_allocator;
  GstAllocator *allocator;
  GstMemory *dest = NULL;

  allocator = GST_MEMORY_CAST (src)->allocator;
  base_mem_allocator = (GstGLBaseMemoryAllocator *) allocator;

  if (src->mem.tex_target == GST_GL_TEXTURE_TARGET_EXTERNAL_OES) {
    GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Cannot copy External OES textures");
    return NULL;
  }

  /* If not doing a full copy, then copy to sysmem, the 2D represention of the
   * texture would become wrong */
  if (offset > 0 || size < GST_MEMORY_CAST (src)->size) {
    return base_mem_allocator->fallback_mem_copy (GST_MEMORY_CAST (src), offset,
        size);
  }

  dest = (GstMemory *) _gl_mem_new (allocator, NULL, src->mem.mem.context,
      src->mem.tex_target, &params, &src->mem.info, src->mem.plane,
      &src->mem.valign, NULL, NULL);

  if (GST_MEMORY_FLAG_IS_SET (src, GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD)) {
    if (!gst_gl_base_memory_memcpy ((GstGLBaseMemory *) src,
            (GstGLBaseMemory *) dest, offset, size)) {
      GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Could not copy GL Memory");
      gst_memory_unref (GST_MEMORY_CAST (dest));
      return NULL;
    }
  } else {
    GstMapInfo dinfo;

    if (!gst_memory_map (GST_MEMORY_CAST (dest), &dinfo,
            GST_MAP_WRITE | GST_MAP_GL)) {
      GST_CAT_WARNING (GST_CAT_GL_MEMORY,
          "Failed not map destination " "for writing");
      gst_memory_unref (GST_MEMORY_CAST (dest));
      return NULL;
    }

    if (!gst_gl_memory_copy_into ((GstGLMemory *) src,
            ((GstGLMemory *) dest)->tex_id, src->mem.tex_target,
            src->mem.tex_type, src->mem.tex_width, GL_MEM_HEIGHT (src))) {
      GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Could not copy GL Memory");
      gst_memory_unmap (GST_MEMORY_CAST (dest), &dinfo);
      gst_memory_unref (GST_MEMORY_CAST (dest));
      return NULL;
    }

    gst_memory_unmap (GST_MEMORY_CAST (dest), &dinfo);
  }

  return dest;
}
Пример #12
0
double
groj_config_get_time(GstMemory *cmem)
{
  GstMapInfo info;
  gst_memory_map (cmem, &info, GST_MAP_READ);
  double time = ((struct RojConfig *)info.data)->time;
  gst_memory_unmap (cmem, &info);    
  return time;
}
Пример #13
0
unsigned long
groj_config_get_number(GstMemory *cmem)
{
  GstMapInfo info;
  gst_memory_map (cmem, &info, GST_MAP_READ);
  unsigned long number = ((struct RojConfig *)info.data)->number;
  gst_memory_unmap (cmem, &info);    
  return number;
}
Пример #14
0
static gpointer
_pbo_download_transfer (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
  GstMapInfo *pbo_info;

  gl_mem->pbo->target = GL_PIXEL_PACK_BUFFER;
  /* texture -> pbo */
  if (info->flags & GST_MAP_READ
      && GST_MEMORY_FLAG_IS_SET (gl_mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD)) {
    GstMapInfo info;

    GST_CAT_TRACE (GST_CAT_GL_MEMORY,
        "attempting download of texture %u " "using pbo %u", gl_mem->mem.tex_id,
        gl_mem->pbo->id);

    if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &info,
            GST_MAP_WRITE | GST_MAP_GL)) {
      GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Failed to write to PBO");
      return NULL;
    }

    if (!_read_pixels_to_pbo (gl_mem)) {
      gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
      return NULL;
    }

    gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
  }

  pbo_info = g_new0 (GstMapInfo, 1);

  /* pbo -> data */
  /* get a cpu accessible mapping from the pbo */
  if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), pbo_info, info->flags)) {
    GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
    g_free (pbo_info);
    return NULL;
  }
  info->user_data[0] = pbo_info;

  return pbo_info->data;
}
Пример #15
0
static CMBlockBufferRef
cm_block_buffer_from_gst_buffer (GstBuffer * buf, GstMapFlags flags)
{
  OSStatus status;
  CMBlockBufferRef bbuf;
  CMBlockBufferCustomBlockSource blockSource;
  guint memcount, i;

  /* Initialize custom block source structure */
  blockSource.version = kCMBlockBufferCustomBlockSourceVersion;
  blockSource.AllocateBlock = NULL;
  blockSource.FreeBlock = cm_block_buffer_freeblock;

  /* Determine number of memory blocks */
  memcount = gst_buffer_n_memory (buf);
  status = CMBlockBufferCreateEmpty (NULL, memcount, 0, &bbuf);
  if (status != kCMBlockBufferNoErr) {
    GST_ERROR ("CMBlockBufferCreateEmpty returned %d", (int) status);
    return NULL;
  }

  /* Go over all GstMemory objects and add them to the CMBlockBuffer */
  for (i = 0; i < memcount; ++i) {
    GstMemory *mem;
    GstMapInfo *info;

    mem = gst_buffer_get_memory (buf, i);

    info = g_slice_new (GstMapInfo);
    if (!gst_memory_map (mem, info, flags)) {
      GST_ERROR ("failed mapping memory");
      g_slice_free (GstMapInfo, info);
      gst_memory_unref (mem);
      CFRelease (bbuf);
      return NULL;
    }

    blockSource.refCon = info;
    status =
        CMBlockBufferAppendMemoryBlock (bbuf, info->data, info->size, NULL,
        &blockSource, 0, info->size, 0);
    if (status != kCMBlockBufferNoErr) {
      GST_ERROR ("CMBlockBufferAppendMemoryBlock returned %d", (int) status);
      gst_memory_unmap (mem, info);
      g_slice_free (GstMapInfo, info);
      gst_memory_unref (mem);
      CFRelease (bbuf);
      return NULL;
    }
  }

  return bbuf;
}
Пример #16
0
static GstMemory *
gst_wl_shm_allocator_alloc (GstAllocator * allocator, gsize size,
    GstAllocationParams * params)
{
  GstWlShmAllocator *self = GST_WL_SHM_ALLOCATOR (allocator);
  char filename[1024];
  static int init = 0;
  int fd;
  GstMemory *mem;
  GstMapInfo info;

  /* TODO: make use of the allocation params, if necessary */

  /* allocate shm pool */
  snprintf (filename, 1024, "%s/%s-%d-%s", g_get_user_runtime_dir (),
      "wayland-shm", init++, "XXXXXX");

  fd = g_mkstemp (filename);
  if (fd < 0) {
    GST_ERROR_OBJECT (self, "opening temp file %s failed: %s", filename,
        strerror (errno));
    return NULL;
  }
  if (ftruncate (fd, size) < 0) {
    GST_ERROR_OBJECT (self, "ftruncate failed: %s", strerror (errno));
    close (fd);
    return NULL;
  }

  mem = gst_fd_allocator_alloc (allocator, fd, size,
      GST_FD_MEMORY_FLAG_KEEP_MAPPED);
  if (G_UNLIKELY (!mem)) {
    GST_ERROR_OBJECT (self, "GstFdMemory allocation failed");
    close (fd);
    return NULL;
  }

  /* we need to map the memory in order to unlink the file without losing it */
  if (!gst_memory_map (mem, &info, GST_MAP_READWRITE)) {
    GST_ERROR_OBJECT (self, "GstFdMemory map failed");
    close (fd);
    return NULL;
  }

  /* unmap will not really munmap(), we just
   * need it to release the miniobject lock */
  gst_memory_unmap (mem, &info);

  unlink (filename);

  return mem;
}
Пример #17
0
static gboolean
gst_udpsrc_alloc_mem (GstUDPSrc * src, GstMemory ** p_mem, GstMapInfo * map,
    gsize size)
{
  GstMemory *mem;

  mem = gst_allocator_alloc (src->allocator, size, &src->params);

  if (!gst_memory_map (mem, map, GST_MAP_WRITE)) {
    gst_memory_unref (mem);
    memset (map, 0, sizeof (GstMapInfo));
    return FALSE;
  }
  *p_mem = mem;
  return TRUE;
}
Пример #18
0
static void
_upload_transfer (GstGLContext * context, GstGLMemoryPBO * gl_mem)
{
  GstGLBaseMemory *mem = (GstGLBaseMemory *) gl_mem;
  GstMapInfo info;

  g_mutex_lock (&mem->lock);
  gl_mem->pbo->target = GL_PIXEL_UNPACK_BUFFER;
  if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &info,
          GST_MAP_READ | GST_MAP_GL)) {
    GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Failed to map pbo for reading");
  } else {
    gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
  }
  g_mutex_unlock (&mem->lock);
}
Пример #19
0
static gboolean
_do_download (GstGLDownload * download, guint texture_id,
    gpointer data[GST_VIDEO_MAX_PLANES])
{
  guint out_width, out_height;
  GstBuffer *inbuf, *outbuf;
  GstMapInfo map_info;
  gboolean ret = TRUE;
  gint i;

  out_width = GST_VIDEO_INFO_WIDTH (&download->info);
  out_height = GST_VIDEO_INFO_HEIGHT (&download->info);

  if (!download->initted) {
    if (!_init_download (download))
      return FALSE;
  }

  GST_TRACE ("doing download of texture:%u (%ux%u)",
      download->priv->in_tex[0]->tex_id, out_width, out_height);

  inbuf = gst_buffer_new ();
  gst_buffer_append_memory (inbuf,
      gst_memory_ref ((GstMemory *) download->priv->in_tex[0]));

  outbuf = gst_gl_color_convert_perform (download->convert, inbuf);
  if (!outbuf)
    return FALSE;

  for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&download->info); i++) {
    GstMemory *out_mem = gst_buffer_peek_memory (outbuf, i);
    gpointer temp_data = ((GstGLMemory *) out_mem)->data;
    ((GstGLMemory *) out_mem)->data = data[i];

    if (!gst_memory_map (out_mem, &map_info, GST_MAP_READ)) {
      GST_ERROR_OBJECT (download, "Failed to map memory");
      ret = FALSE;
    }
    gst_memory_unmap (out_mem, &map_info);
    ((GstGLMemory *) out_mem)->data = temp_data;
  }

  gst_buffer_unref (inbuf);
  gst_buffer_unref (outbuf);

  return ret;
}
Пример #20
0
void GStreamerReader::CopyIntoImageBuffer(GstBuffer* aBuffer,
                                          GstBuffer** aOutBuffer,
                                          nsRefPtr<PlanarYCbCrImage> &image)
{
  *aOutBuffer = gst_buffer_new_allocate(mAllocator, gst_buffer_get_size(aBuffer), nullptr);
  GstMemory *mem = gst_buffer_peek_memory(*aOutBuffer, 0);
  GstMapInfo map_info;
  gst_memory_map(mem, &map_info, GST_MAP_WRITE);
  gst_buffer_extract(aBuffer, 0, map_info.data, gst_buffer_get_size(aBuffer));
  gst_memory_unmap(mem, &map_info);

  /* create a new gst buffer with the newly created memory and copy the
   * metadata over from the incoming buffer */
  gst_buffer_copy_into(*aOutBuffer, aBuffer,
      (GstBufferCopyFlags)(GST_BUFFER_COPY_METADATA), 0, -1);
  image = GetImageFromBuffer(*aOutBuffer);
}
Пример #21
0
static gboolean
_read_pixels_to_pbo (GstGLMemoryPBO * gl_mem)
{
  if (!gl_mem->pbo || !CONTEXT_SUPPORTS_PBO_DOWNLOAD (gl_mem->mem.mem.context)
      || gl_mem->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE
      || gl_mem->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA)
    /* unsupported */
    return FALSE;

  if (GST_MEMORY_FLAG_IS_SET (gl_mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD)) {
    /* copy texture data into into the pbo and map that */
    gsize plane_start;
    GstMapInfo pbo_info;

    plane_start =
        gst_gl_get_plane_start (&gl_mem->mem.info, &gl_mem->mem.valign,
        gl_mem->mem.plane) + GST_MEMORY_CAST (gl_mem)->offset;

    gl_mem->pbo->target = GL_PIXEL_PACK_BUFFER;
    if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info,
            GST_MAP_WRITE | GST_MAP_GL)) {
      GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo for writing");
      return FALSE;
    }

    if (!gst_gl_memory_read_pixels ((GstGLMemory *) gl_mem,
            (gpointer) plane_start)) {
      gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
      return FALSE;
    }

    gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
  }

  return TRUE;
}
static gsize
fill_vectors (struct iovec *vecs, GstMapInfo * maps, guint n, GstBuffer * buf)
{
  GstMemory *mem;
  gsize size = 0;
  guint i;

  g_assert (gst_buffer_n_memory (buf) == n);

  for (i = 0; i < n; ++i) {
    mem = gst_buffer_peek_memory (buf, i);
    if (gst_memory_map (mem, &maps[i], GST_MAP_READ)) {
      vecs[i].iov_base = maps[i].data;
      vecs[i].iov_len = maps[i].size;
    } else {
      GST_WARNING ("Failed to map memory %p for reading", mem);
      vecs[i].iov_base = (void *) "";
      vecs[i].iov_len = 0;
    }
    size += vecs[i].iov_len;
  }

  return size;
}
Пример #23
0
GstMapInfo *
gstsharp_memory_get_info(GstMemory *memory, GstMapFlags flags){
	GstMapInfo info = {0};
	gst_memory_map(memory,&info,flags);
	return &info;
}
/* Copy fixed header and extension. Replace current ssrc by ssrc1,
 * remove OSN and replace current seq num by OSN.
 * Copy memory to avoid to manually copy each rtp buffer field.
 */
static GstBuffer *
_gst_rtp_buffer_new_from_rtx (GstRTPBuffer * rtp, guint32 ssrc1,
    guint16 orign_seqnum, guint8 origin_payload_type)
{
  GstMemory *mem = NULL;
  GstRTPBuffer new_rtp = GST_RTP_BUFFER_INIT;
  GstBuffer *new_buffer = gst_buffer_new ();
  GstMapInfo map;
  guint payload_len = 0;

  /* copy fixed header */
  mem = gst_memory_copy (rtp->map[0].memory,
      (guint8 *) rtp->data[0] - rtp->map[0].data, rtp->size[0]);
  gst_buffer_append_memory (new_buffer, mem);

  /* copy extension if any */
  if (rtp->size[1]) {
    mem = gst_memory_copy (rtp->map[1].memory,
        (guint8 *) rtp->data[1] - rtp->map[1].data, rtp->size[1]);
    gst_buffer_append_memory (new_buffer, mem);
  }

  /* copy payload and remove OSN */
  payload_len = rtp->size[2] - 2;
  mem = gst_allocator_alloc (NULL, payload_len, NULL);

  gst_memory_map (mem, &map, GST_MAP_WRITE);
  if (rtp->size[2])
    memcpy (map.data, (guint8 *) rtp->data[2] + 2, payload_len);
  gst_memory_unmap (mem, &map);
  gst_buffer_append_memory (new_buffer, mem);

  /* the sender always constructs rtx packets without padding,
   * But the receiver can still receive rtx packets with padding.
   * So just copy it.
   */
  if (rtp->size[3]) {
    guint pad_len = rtp->size[3];

    mem = gst_allocator_alloc (NULL, pad_len, NULL);

    gst_memory_map (mem, &map, GST_MAP_WRITE);
    map.data[pad_len - 1] = pad_len;
    gst_memory_unmap (mem, &map);

    gst_buffer_append_memory (new_buffer, mem);
  }

  /* set ssrc and seq num */
  gst_rtp_buffer_map (new_buffer, GST_MAP_WRITE, &new_rtp);
  gst_rtp_buffer_set_ssrc (&new_rtp, ssrc1);
  gst_rtp_buffer_set_seq (&new_rtp, orign_seqnum);
  gst_rtp_buffer_set_payload_type (&new_rtp, origin_payload_type);
  gst_rtp_buffer_unmap (&new_rtp);

  gst_buffer_copy_into (new_buffer, rtp->buffer,
      GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
  GST_BUFFER_FLAG_SET (new_buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);

  return new_buffer;
}
static void
test_transfer_allocator (const gchar * allocator_name)
{
  GstAllocator *gl_allocator;
  GstGLBaseMemoryAllocator *base_mem_alloc;
  GstVideoInfo v_info;
  GstMemory *mem, *mem2, *mem3;
  GstMapInfo map_info;
  GstGLVideoAllocationParams *params;

  gl_allocator = gst_allocator_find (allocator_name);
  fail_if (gl_allocator == NULL);
  base_mem_alloc = GST_GL_BASE_MEMORY_ALLOCATOR (gl_allocator);

  gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, 1, 1);

  params = gst_gl_video_allocation_params_new (context, NULL, &v_info, 0,
      NULL, GST_GL_TEXTURE_TARGET_2D, GST_VIDEO_GL_TEXTURE_TYPE_RGBA);

  /* texture creation */
  mem = (GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
      (GstGLAllocationParams *) params);
  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  /* test wrapping raw data */
  params = gst_gl_video_allocation_params_new_wrapped_data (context, NULL,
      &v_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D,
      GST_VIDEO_GL_TEXTURE_TYPE_RGBA, rgba_pixel, NULL, NULL);
  mem2 =
      (GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
      (GstGLAllocationParams *) params);
  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
  fail_if (mem == NULL);

  fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  /* wrapped texture creation */
  params = gst_gl_video_allocation_params_new_wrapped_texture (context, NULL,
      &v_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D,
      GST_VIDEO_GL_TEXTURE_TYPE_RGBA, ((GstGLMemory *) mem)->tex_id, NULL,
      NULL);
  mem3 =
      (GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
      (GstGLAllocationParams *) params);
  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  /* check data/flags are correct */
  fail_unless (gst_memory_map (mem2, &map_info, GST_MAP_READ));

  fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  fail_unless (memcmp (map_info.data, rgba_pixel,
          G_N_ELEMENTS (rgba_pixel)) == 0,
      "0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", map_info.data[0],
      map_info.data[1], map_info.data[2], map_info.data[3],
      (guint8) rgba_pixel[0], (guint8) rgba_pixel[1], (guint8) rgba_pixel[2],
      (guint8) rgba_pixel[3]);

  gst_memory_unmap (mem2, &map_info);

  fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  fail_unless (gst_memory_map (mem2, &map_info, GST_MAP_READ | GST_MAP_GL));

  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  /* test texture copy */
  fail_unless (gst_gl_memory_copy_into ((GstGLMemory *) mem2,
          ((GstGLMemory *) mem)->tex_id, GST_GL_TEXTURE_TARGET_2D,
          GST_VIDEO_GL_TEXTURE_TYPE_RGBA, 1, 1));
  GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD);

  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  gst_memory_unmap (mem2, &map_info);

  /* test download of copied texture */
  fail_unless (gst_memory_map (mem, &map_info, GST_MAP_READ));

  fail_unless (memcmp (map_info.data, rgba_pixel,
          G_N_ELEMENTS (rgba_pixel)) == 0,
      "0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", (guint8) map_info.data[0],
      (guint8) map_info.data[1], (guint8) map_info.data[2],
      (guint8) map_info.data[3], (guint8) rgba_pixel[0], (guint8) rgba_pixel[1],
      (guint8) rgba_pixel[2], (guint8) rgba_pixel[3]);

  gst_memory_unmap (mem, &map_info);

  /* test download of wrapped copied texture */
  fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_READ));

  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  fail_unless (memcmp (map_info.data, rgba_pixel,
          G_N_ELEMENTS (rgba_pixel)) == 0,
      "0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", (guint8) map_info.data[0],
      (guint8) map_info.data[1], (guint8) map_info.data[2],
      (guint8) map_info.data[3], (guint8) rgba_pixel[0], (guint8) rgba_pixel[1],
      (guint8) rgba_pixel[2], (guint8) rgba_pixel[3]);

  gst_memory_unmap (mem3, &map_info);

  /* test upload flag */
  fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_WRITE));
  gst_memory_unmap (mem3, &map_info);

  fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  /* test download flag */
  fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_WRITE | GST_MAP_GL));
  gst_memory_unmap (mem3, &map_info);

  fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
  fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
          GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));

  gst_memory_unref (mem);
  gst_memory_unref (mem2);
  gst_memory_unref (mem3);
  gst_object_unref (gl_allocator);
}
Пример #26
0
static GstFlowReturn
gst_openjpeg_enc_handle_frame (GstVideoEncoder * encoder,
    GstVideoCodecFrame * frame)
{
  GstOpenJPEGEnc *self = GST_OPENJPEG_ENC (encoder);
  GstFlowReturn ret = GST_FLOW_OK;
#ifdef HAVE_OPENJPEG_1
  opj_cinfo_t *enc;
  GstMapInfo map;
  guint length;
  opj_cio_t *io;
#else
  opj_codec_t *enc;
  opj_stream_t *stream;
  MemStream mstream;
#endif
  opj_image_t *image;
  GstVideoFrame vframe;

  GST_DEBUG_OBJECT (self, "Handling frame");

  enc = opj_create_compress (self->codec_format);
  if (!enc)
    goto initialization_error;

#ifdef HAVE_OPENJPEG_1
  if (G_UNLIKELY (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >=
          GST_LEVEL_TRACE)) {
    opj_event_mgr_t callbacks;

    callbacks.error_handler = gst_openjpeg_enc_opj_error;
    callbacks.warning_handler = gst_openjpeg_enc_opj_warning;
    callbacks.info_handler = gst_openjpeg_enc_opj_info;
    opj_set_event_mgr ((opj_common_ptr) enc, &callbacks, self);
  } else {
    opj_set_event_mgr ((opj_common_ptr) enc, NULL, NULL);
  }
#else
  if (G_UNLIKELY (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >=
          GST_LEVEL_TRACE)) {
    opj_set_info_handler (enc, gst_openjpeg_enc_opj_info, self);
    opj_set_warning_handler (enc, gst_openjpeg_enc_opj_warning, self);
    opj_set_error_handler (enc, gst_openjpeg_enc_opj_error, self);
  } else {
    opj_set_info_handler (enc, NULL, NULL);
    opj_set_warning_handler (enc, NULL, NULL);
    opj_set_error_handler (enc, NULL, NULL);
  }
#endif

  if (!gst_video_frame_map (&vframe, &self->input_state->info,
          frame->input_buffer, GST_MAP_READ))
    goto map_read_error;

  image = gst_openjpeg_enc_fill_image (self, &vframe);
  if (!image)
    goto fill_image_error;
  gst_video_frame_unmap (&vframe);

  opj_setup_encoder (enc, &self->params, image);

#ifdef HAVE_OPENJPEG_1
  io = opj_cio_open ((opj_common_ptr) enc, NULL, 0);
  if (!io)
    goto open_error;

  if (!opj_encode (enc, io, image, NULL))
    goto encode_error;

  opj_image_destroy (image);

  length = cio_tell (io);

  ret =
      gst_video_encoder_allocate_output_frame (encoder, frame,
      length + (self->is_jp2c ? 8 : 0));
  if (ret != GST_FLOW_OK)
    goto allocate_error;

  gst_buffer_fill (frame->output_buffer, self->is_jp2c ? 8 : 0, io->buffer,
      length);
  if (self->is_jp2c) {
    gst_buffer_map (frame->output_buffer, &map, GST_MAP_WRITE);
    GST_WRITE_UINT32_BE (map.data, length + 8);
    GST_WRITE_UINT32_BE (map.data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
    gst_buffer_unmap (frame->output_buffer, &map);
  }

  opj_cio_close (io);
  opj_destroy_compress (enc);
#else
  stream = opj_stream_create (4096, OPJ_FALSE);
  if (!stream)
    goto open_error;

  mstream.allocsize = 4096;
  mstream.data = g_malloc (mstream.allocsize);
  mstream.offset = 0;
  mstream.size = 0;

  opj_stream_set_read_function (stream, read_fn);
  opj_stream_set_write_function (stream, write_fn);
  opj_stream_set_skip_function (stream, skip_fn);
  opj_stream_set_seek_function (stream, seek_fn);
  opj_stream_set_user_data (stream, &mstream);
  opj_stream_set_user_data_length (stream, mstream.size);

  if (!opj_start_compress (enc, image, stream))
    goto encode_error;

  if (!opj_encode (enc, stream))
    goto encode_error;

  if (!opj_end_compress (enc, stream))
    goto encode_error;

  opj_image_destroy (image);
  opj_stream_destroy (stream);
  opj_destroy_codec (enc);

  frame->output_buffer = gst_buffer_new ();

  if (self->is_jp2c) {
    GstMapInfo map;
    GstMemory *mem;

    mem = gst_allocator_alloc (NULL, 8, NULL);
    gst_memory_map (mem, &map, GST_MAP_WRITE);
    GST_WRITE_UINT32_BE (map.data, mstream.size + 8);
    GST_WRITE_UINT32_BE (map.data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
    gst_memory_unmap (mem, &map);
    gst_buffer_append_memory (frame->output_buffer, mem);
  }

  gst_buffer_append_memory (frame->output_buffer,
      gst_memory_new_wrapped (0, mstream.data, mstream.allocsize, 0,
          mstream.size, NULL, (GDestroyNotify) g_free));
#endif

  ret = gst_video_encoder_finish_frame (encoder, frame);

  return ret;

initialization_error:
  {
    gst_video_codec_frame_unref (frame);
    GST_ELEMENT_ERROR (self, LIBRARY, INIT,
        ("Failed to initialize OpenJPEG encoder"), (NULL));
    return GST_FLOW_ERROR;
  }
map_read_error:
  {
#ifdef HAVE_OPENJPEG_1
    opj_destroy_compress (enc);
#else
    opj_destroy_codec (enc);
#endif
    gst_video_codec_frame_unref (frame);

    GST_ELEMENT_ERROR (self, CORE, FAILED,
        ("Failed to map input buffer"), (NULL));
    return GST_FLOW_ERROR;
  }
fill_image_error:
  {
#ifdef HAVE_OPENJPEG_1
    opj_destroy_compress (enc);
#else
    opj_destroy_codec (enc);
#endif
    gst_video_frame_unmap (&vframe);
    gst_video_codec_frame_unref (frame);

    GST_ELEMENT_ERROR (self, LIBRARY, INIT,
        ("Failed to fill OpenJPEG image"), (NULL));
    return GST_FLOW_ERROR;
  }
open_error:
  {
    opj_image_destroy (image);
#ifdef HAVE_OPENJPEG_1
    opj_destroy_compress (enc);
#else
    opj_destroy_codec (enc);
#endif
    gst_video_codec_frame_unref (frame);

    GST_ELEMENT_ERROR (self, LIBRARY, INIT,
        ("Failed to open OpenJPEG data"), (NULL));
    return GST_FLOW_ERROR;
  }
encode_error:
  {
#ifdef HAVE_OPENJPEG_1
    opj_cio_close (io);
    opj_image_destroy (image);
    opj_destroy_compress (enc);
#else
    opj_stream_destroy (stream);
    g_free (mstream.data);
    opj_image_destroy (image);
    opj_destroy_codec (enc);
#endif
    gst_video_codec_frame_unref (frame);

    GST_ELEMENT_ERROR (self, STREAM, ENCODE,
        ("Failed to encode OpenJPEG stream"), (NULL));
    return GST_FLOW_ERROR;
  }
#ifdef HAVE_OPENJPEG_1
allocate_error:
  {
    opj_cio_close (io);
    opj_destroy_compress (enc);
    gst_video_codec_frame_unref (frame);

    GST_ELEMENT_ERROR (self, CORE, FAILED,
        ("Failed to allocate output buffer"), (NULL));
    return ret;
  }
#endif
}
Пример #27
0
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
  GstMultiUDPSink *sink;
  GList *clients;
  GOutputVector *vec;
  GstMapInfo *map;
  guint n_mem, i;
  gsize size;
  GstMemory *mem;
  gint num, no_clients;
  GError *err = NULL;

  sink = GST_MULTIUDPSINK (bsink);

  n_mem = gst_buffer_n_memory (buffer);
  if (n_mem == 0)
    goto no_data;

  /* allocated on the stack, the max number of memory blocks is limited so this
   * should not cause stack overflows */
  vec = sink->vec;
  map = sink->map;

  size = 0;
  for (i = 0; i < n_mem; i++) {
    mem = gst_buffer_get_memory (buffer, i);
    gst_memory_map (mem, &map[i], GST_MAP_READ);

    vec[i].buffer = map[i].data;
    vec[i].size = map[i].size;

    size += map[i].size;
  }

  sink->bytes_to_serve += size;

  /* grab lock while iterating and sending to clients, this should be
   * fast as UDP never blocks */
  g_mutex_lock (&sink->client_lock);
  GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes in %u blocks",
      size, n_mem);

  no_clients = 0;
  num = 0;
  for (clients = sink->clients; clients; clients = g_list_next (clients)) {
    GstUDPClient *client;
    GSocket *socket;
    GSocketFamily family;
    gint count;

    client = (GstUDPClient *) clients->data;
    no_clients++;
    GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
        size, client);

    family = g_socket_address_get_family (G_SOCKET_ADDRESS (client->addr));
    /* Select socket to send from for this address */
    if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
      socket = sink->used_socket_v6;
    else
      socket = sink->used_socket;

    count = sink->send_duplicates ? client->refcount : 1;

    while (count--) {
      gssize ret;

      ret =
          g_socket_send_message (socket, client->addr, vec, n_mem,
          NULL, 0, 0, sink->cancellable, &err);

      if (G_UNLIKELY (ret < 0)) {
        if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
          goto flushing;

        /* we continue after posting a warning, next packets might be ok
         * again */
        if (size > UDP_MAX_SIZE) {
          GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
              ("Attempting to send a UDP packet larger than maximum size "
                  "(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
              ("Reason: %s", err ? err->message : "unknown reason"));
        } else {
          GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
              ("Error sending UDP packet"), ("Reason: %s",
                  err ? err->message : "unknown reason"));
        }
        g_clear_error (&err);
      } else {
        num++;
        client->bytes_sent += ret;
        client->packets_sent++;
        sink->bytes_served += ret;
      }
    }
  }
  g_mutex_unlock (&sink->client_lock);

  /* unmap all memory again */
  for (i = 0; i < n_mem; i++) {
    gst_memory_unmap (map[i].memory, &map[i]);
    gst_memory_unref (map[i].memory);
  }

  GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
      size, num, no_clients);

  return GST_FLOW_OK;

no_data:
  {
    return GST_FLOW_OK;
  }
flushing:
  {
    GST_DEBUG ("we are flushing");
    g_mutex_unlock (&sink->client_lock);
    g_clear_error (&err);

    /* unmap all memory */
    for (i = 0; i < n_mem; i++) {
      gst_memory_unmap (map[i].memory, &map[i]);
      gst_memory_unref (map[i].memory);
    }

    return GST_FLOW_FLUSHING;
  }
}
Пример #28
0
gboolean
_gst_playbin_get_current_frame (GstElement          *playbin,
				int                  video_fps_n,
				int                  video_fps_d,
				FrameReadyCallback   cb,
				gpointer             user_data)
{
	ScreenshotData *data;
	GstCaps        *to_caps;
	GstSample      *sample;
	GstCaps        *sample_caps;
	GstStructure   *s;
	int             outwidth;
	int             outheight;

	data = g_new0 (ScreenshotData, 1);
	data->cb = cb;
	data->user_data = user_data;

	/* our desired output format (RGB24) */
	to_caps = gst_caps_new_simple ("video/x-raw",
				       "format", G_TYPE_STRING, "RGB",
				       /* Note: we don't ask for a specific width/height here, so that
				        * videoscale can adjust dimensions from a non-1/1 pixel aspect
				        * ratio to a 1/1 pixel-aspect-ratio. We also don't ask for a
				        * specific framerate, because the input framerate won't
				        * necessarily match the output framerate if there's a deinterlacer
				        * in the pipeline. */
				       "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
				       NULL);

	/* get frame */
	sample = NULL;
	g_signal_emit_by_name (playbin, "convert-sample", to_caps, &sample);
	gst_caps_unref (to_caps);

	if (sample == NULL) {
		g_warning ("Could not take screenshot: %s", "failed to retrieve or convert video frame");
		screenshot_data_finalize (data);
		return FALSE;
	}

	sample_caps = gst_sample_get_caps (sample);
	if (sample_caps == NULL) {
		g_warning ("Could not take screenshot: %s", "no caps on output buffer");
		return FALSE;
	}

	s = gst_caps_get_structure (sample_caps, 0);
	gst_structure_get_int (s, "width", &outwidth);
	gst_structure_get_int (s, "height", &outheight);
	if ((outwidth > 0) && (outheight > 0)) {
		GstMemory  *memory;
		GstMapInfo  info;

		memory = gst_buffer_get_memory (gst_sample_get_buffer (sample), 0);
		gst_memory_map (memory, &info, GST_MAP_READ);
		data->pixbuf = gdk_pixbuf_new_from_data (info.data,
							 GDK_COLORSPACE_RGB,
							 FALSE,
							 8,
							 outwidth,
							 outheight,
							 GST_ROUND_UP_4 (outwidth * 3),
							 destroy_pixbuf,
							 sample);

		gst_memory_unmap (memory, &info);
	}

	if (data->pixbuf == NULL)
		g_warning ("Could not take screenshot: %s", "could not create pixbuf");

	screenshot_data_finalize (data);

	return TRUE;
}
Пример #29
0
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
  GstShmSink *self = GST_SHM_SINK (bsink);
  int rv = 0;
  GstMapInfo map;
  gboolean need_new_memory = FALSE;
  GstFlowReturn ret = GST_FLOW_OK;
  GstMemory *memory = NULL;
  GstBuffer *sendbuf = NULL;
  gsize written_bytes;

  GST_OBJECT_LOCK (self);
  while (self->wait_for_connection && !self->clients) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock) {
      GST_OBJECT_UNLOCK (self);
      ret = gst_base_sink_wait_preroll (bsink);
      if (ret == GST_FLOW_OK)
        GST_OBJECT_LOCK (self);
      else
        return ret;
    }
  }

  while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock) {
      GST_OBJECT_UNLOCK (self);
      ret = gst_base_sink_wait_preroll (bsink);
      if (ret == GST_FLOW_OK)
        GST_OBJECT_LOCK (self);
      else
        return ret;
    }
  }


  if (gst_buffer_n_memory (buf) > 1) {
    GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
        " one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
    need_new_memory = TRUE;
  } else {
    memory = gst_buffer_peek_memory (buf, 0);

    if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
      need_new_memory = TRUE;
      GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
          "%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
    }
  }

  if (need_new_memory) {
    if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
      gsize area_size = sp_writer_get_max_buf_size (self->pipe);
      GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT, (NULL),
          ("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
              "buffer of size %" G_GSIZE_FORMAT, area_size,
              gst_buffer_get_size (buf)));
      goto error;
    }

    while ((memory =
            gst_shm_sink_allocator_alloc_locked (self->allocator,
                gst_buffer_get_size (buf), &self->params)) == NULL) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock) {
        GST_OBJECT_UNLOCK (self);
        ret = gst_base_sink_wait_preroll (bsink);
        if (ret == GST_FLOW_OK)
          GST_OBJECT_LOCK (self);
        else
          return ret;
      }
    }

    while (self->wait_for_connection && !self->clients) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock) {
        GST_OBJECT_UNLOCK (self);
        ret = gst_base_sink_wait_preroll (bsink);
        if (ret == GST_FLOW_OK) {
          GST_OBJECT_LOCK (self);
        } else {
          gst_memory_unref (memory);
          return ret;
        }
      }
    }

    if (!gst_memory_map (memory, &map, GST_MAP_WRITE)) {
      GST_ELEMENT_ERROR (self, STREAM, FAILED,
          (NULL), ("Failed to map memory"));
      goto error;
    }

    GST_DEBUG_OBJECT (self,
        "Copying %" G_GSIZE_FORMAT " bytes into map of size %" G_GSIZE_FORMAT
        " bytes.", gst_buffer_get_size (buf), map.size);
    written_bytes = gst_buffer_extract (buf, 0, map.data, map.size);
    GST_DEBUG_OBJECT (self, "Copied %" G_GSIZE_FORMAT " bytes.", written_bytes);
    gst_memory_unmap (memory, &map);

    sendbuf = gst_buffer_new ();
    if (!gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1)) {
      GST_ELEMENT_ERROR (self, STREAM, FAILED,
          (NULL), ("Failed to copy data into send buffer"));
      gst_buffer_unref (sendbuf);
      goto error;
    }
    gst_buffer_append_memory (sendbuf, memory);
  } else {
    sendbuf = gst_buffer_ref (buf);
  }

  if (!gst_buffer_map (sendbuf, &map, GST_MAP_READ)) {
    GST_ELEMENT_ERROR (self, STREAM, FAILED,
        (NULL), ("Failed to map data into send buffer"));
    goto error;
  }

  /* Make the memory readonly as of now as we've sent it to the other side
   * We know it's not mapped for writing anywhere as we just mapped it for
   * reading
   */
  rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);
  if (rv == -1) {
    GST_ELEMENT_ERROR (self, STREAM, FAILED,
        (NULL), ("Failed to send data over SHM"));
    gst_buffer_unmap (sendbuf, &map);
    goto error;
  }

  gst_buffer_unmap (sendbuf, &map);

  GST_OBJECT_UNLOCK (self);

  if (rv == 0) {
    GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
    gst_buffer_unref (sendbuf);
  }

  return ret;

error:
  GST_OBJECT_UNLOCK (self);
  return GST_FLOW_ERROR;
}
Пример #30
0
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
  GstShmSink *self = GST_SHM_SINK (bsink);
  int rv = 0;
  GstMapInfo map;
  gboolean need_new_memory = FALSE;
  GstFlowReturn ret = GST_FLOW_OK;
  GstMemory *memory = NULL;
  GstBuffer *sendbuf = NULL;

  GST_OBJECT_LOCK (self);
  while (self->wait_for_connection && !self->clients) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock)
      goto flushing;
  }

  while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock)
      goto flushing;
  }


  if (gst_buffer_n_memory (buf) > 1) {
    GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
        " one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
    need_new_memory = TRUE;
  } else {
    memory = gst_buffer_peek_memory (buf, 0);

    if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
      need_new_memory = TRUE;
      GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
          "%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
    }
  }

  if (need_new_memory) {
    if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
      gsize area_size = sp_writer_get_max_buf_size (self->pipe);
      GST_OBJECT_UNLOCK (self);
      GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
          ("Shared memory area is too small"),
          ("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
              "buffer of size %" G_GSIZE_FORMAT, area_size,
              gst_buffer_get_size (buf)));
      return GST_FLOW_ERROR;
    }

    while ((memory =
            gst_shm_sink_allocator_alloc_locked (self->allocator,
                gst_buffer_get_size (buf), &self->params)) == NULL) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock)
        goto flushing;
    }

    while (self->wait_for_connection && !self->clients) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock) {
        gst_memory_unref (memory);
        GST_OBJECT_UNLOCK (self);
        return GST_FLOW_FLUSHING;
      }
    }

    gst_memory_map (memory, &map, GST_MAP_WRITE);
    gst_buffer_extract (buf, 0, map.data, map.size);
    gst_memory_unmap (memory, &map);

    sendbuf = gst_buffer_new ();
    gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
    gst_buffer_append_memory (sendbuf, memory);
  } else {
    sendbuf = gst_buffer_ref (buf);
  }

  gst_buffer_map (sendbuf, &map, GST_MAP_READ);
  /* Make the memory readonly as of now as we've sent it to the other side
   * We know it's not mapped for writing anywhere as we just mapped it for
   * reading
   */

  rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);

  gst_buffer_unmap (sendbuf, &map);

  GST_OBJECT_UNLOCK (self);

  if (rv == 0) {
    GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
    gst_buffer_unref (sendbuf);
  } else if (rv == -1) {
    GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Invalid allocated buffer"),
        ("The shmpipe library rejects our buffer, this is a bug"));
    ret = GST_FLOW_ERROR;
  }

  /* If we allocated our own memory, then unmap it */

  return ret;

flushing:
  GST_OBJECT_UNLOCK (self);
  return GST_FLOW_FLUSHING;
}