static void
gst_xvimage_buffer_pool_finalize (GObject * object)
{
GstXvImageBufferPool *pool = GST_XVIMAGE_BUFFER_POOL_CAST (object);
GST_LOG_OBJECT (pool, "finalize XvImage buffer pool %p", pool);
if (pool->caps)
gst_caps_unref (pool->caps);
if (pool->allocator)
gst_object_unref (pool->allocator);
G_OBJECT_CLASS (gst_xvimage_buffer_pool_parent_class)->finalize (object);
}
/* This function handles GstXImageBuffer creation depending on XShm availability */
static GstFlowReturn
xvimage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
GstVideoInfo *info;
GstBuffer *xvimage;
GstMemory *mem;
GError *err = NULL;
info = &xvpool->info;
xvimage = gst_buffer_new ();
mem = gst_xvimage_allocator_alloc (xvpool->allocator, xvpool->im_format,
info, xvpool->padded_width, xvpool->padded_height, &xvpool->crop, &err);
if (mem == NULL) {
gst_buffer_unref (xvimage);
goto no_buffer;
}
gst_buffer_append_memory (xvimage, mem);
if (xvpool->add_metavideo) {
GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
gst_buffer_add_video_meta_full (xvimage, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info),
GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info),
info->offset, info->stride);
}
*buffer = xvimage;
return GST_FLOW_OK;
/* ERROR */
no_buffer:
{
GST_WARNING_OBJECT (pool, "can't create image: %s", err->message);
g_clear_error (&err);
return GST_FLOW_ERROR;
}
}
/* This function handles GstXImageBuffer creation depending on XShm availability */
static GstFlowReturn
xvimage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
GstXvImageBufferPoolPrivate *priv = xvpool->priv;
GstVideoInfo *info;
GstBuffer *xvimage;
GstXvImageMeta *meta;
info = &priv->info;
xvimage = gst_buffer_new ();
meta = gst_buffer_add_xvimage_meta (xvimage, xvpool);
if (meta == NULL) {
gst_buffer_unref (xvimage);
goto no_buffer;
}
if (priv->add_metavideo) {
GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
gst_buffer_add_video_meta_full (xvimage, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info),
GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info),
info->offset, info->stride);
}
*buffer = xvimage;
return GST_FLOW_OK;
/* ERROR */
no_buffer:
{
GST_WARNING_OBJECT (pool, "can't create image");
return GST_FLOW_ERROR;
}
}
static gboolean
xvimage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
{
GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
GstVideoInfo info;
GstCaps *caps;
guint size, min_buffers, max_buffers;
GstXvContext *context;
if (!gst_buffer_pool_config_get_params (config, &caps, &size, &min_buffers,
&max_buffers))
goto wrong_config;
if (caps == NULL)
goto no_caps;
/* now parse the caps from the config */
if (!gst_video_info_from_caps (&info, caps))
goto wrong_caps;
GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height,
caps);
context = gst_xvimage_allocator_peek_context (xvpool->allocator);
xvpool->im_format = gst_xvcontext_get_format_from_info (context, &info);
if (xvpool->im_format == -1)
goto unknown_format;
if (xvpool->caps)
gst_caps_unref (xvpool->caps);
xvpool->caps = gst_caps_ref (caps);
/* enable metadata based on config of the pool */
xvpool->add_metavideo =
gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
/* parse extra alignment info */
xvpool->need_alignment = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
if (xvpool->need_alignment) {
gst_buffer_pool_config_get_video_alignment (config, &xvpool->align);
GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", xvpool->align.padding_top,
xvpool->align.padding_left, xvpool->align.padding_left,
xvpool->align.padding_bottom);
/* do padding and alignment */
gst_video_info_align (&info, &xvpool->align);
gst_buffer_pool_config_set_video_alignment (config, &xvpool->align);
/* we need the video metadata too now */
xvpool->add_metavideo = TRUE;
} else {
gst_video_alignment_reset (&xvpool->align);
}
/* add the padding */
xvpool->padded_width =
GST_VIDEO_INFO_WIDTH (&info) + xvpool->align.padding_left +
xvpool->align.padding_right;
xvpool->padded_height =
GST_VIDEO_INFO_HEIGHT (&info) + xvpool->align.padding_top +
xvpool->align.padding_bottom;
xvpool->info = info;
xvpool->crop.x = xvpool->align.padding_left;
xvpool->crop.y = xvpool->align.padding_top;
xvpool->crop.w = xvpool->info.width;
xvpool->crop.h = xvpool->info.height;
gst_buffer_pool_config_set_params (config, caps, info.size, min_buffers,
max_buffers);
return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
/* ERRORS */
wrong_config:
{
GST_WARNING_OBJECT (pool, "invalid config");
return FALSE;
}
no_caps:
{
GST_WARNING_OBJECT (pool, "no caps in config");
return FALSE;
}
wrong_caps:
{
GST_WARNING_OBJECT (pool,
"failed getting geometry from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
unknown_format:
{
GST_WARNING_OBJECT (pool, "failed to get format from caps %"
GST_PTR_FORMAT, caps);
return FALSE;
}
}
static gboolean
xvimage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
{
GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
GstXvImageBufferPoolPrivate *priv = xvpool->priv;
GstVideoInfo info;
GstCaps *caps;
if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL))
goto wrong_config;
if (caps == NULL)
goto no_caps;
/* now parse the caps from the config */
if (!gst_video_info_from_caps (&info, caps))
goto wrong_caps;
GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height,
caps);
priv->im_format = gst_xvimagesink_get_format_from_info (xvpool->sink, &info);
if (priv->im_format == -1)
goto unknown_format;
if (priv->caps)
gst_caps_unref (priv->caps);
priv->caps = gst_caps_ref (caps);
/* enable metadata based on config of the pool */
priv->add_metavideo =
gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
/* parse extra alignment info */
priv->need_alignment = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
if (priv->need_alignment) {
gst_buffer_pool_config_get_video_alignment (config, &priv->align);
GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", priv->align.padding_top,
priv->align.padding_left, priv->align.padding_left,
priv->align.padding_bottom);
/* do padding and alignment */
gst_video_info_align (&info, &priv->align);
/* we need the video metadata too now */
priv->add_metavideo = TRUE;
} else {
gst_video_alignment_reset (&priv->align);
}
/* add the padding */
priv->padded_width =
GST_VIDEO_INFO_WIDTH (&info) + priv->align.padding_left +
priv->align.padding_right;
priv->padded_height =
GST_VIDEO_INFO_HEIGHT (&info) + priv->align.padding_top +
priv->align.padding_bottom;
priv->info = info;
return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
/* ERRORS */
wrong_config:
{
GST_WARNING_OBJECT (pool, "invalid config");
return FALSE;
}
no_caps:
{
GST_WARNING_OBJECT (pool, "no caps in config");
return FALSE;
}
wrong_caps:
{
GST_WARNING_OBJECT (pool,
"failed getting geometry from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
unknown_format:
{
GST_WARNING_OBJECT (xvpool->sink, "failed to get format from caps %"
GST_PTR_FORMAT, caps);
GST_ELEMENT_ERROR (xvpool->sink, RESOURCE, WRITE,
("Failed to create output image buffer of %dx%d pixels",
priv->info.width, priv->info.height),
("Invalid input caps %" GST_PTR_FORMAT, caps));
return FALSE;;
}
}
