gstreamer/sys/pvr2d/gstpvrbufferpool.c
2012-04-19 14:24:45 +02:00

371 lines
10 KiB
C

/*
* GStreamer
* Copyright (c) 2010, Texas Instruments Incorporated
* Copyright (c) 2011, Collabora Ltd
* @author: Edward Hervey <edward@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstpvrbufferpool.h"
/* Debugging category */
#include <gst/gstinfo.h>
/* Helper functions */
#include <gst/video/video.h>
#include <gst/video/gstvideometa.h>
#include <gst/video/gstvideopool.h>
GST_DEBUG_CATEGORY_EXTERN (gst_debug_pvrvideosink);
#define GST_CAT_DEFAULT gst_debug_pvrvideosink
static void
gst_pvr_meta_free (GstPVRMeta * meta, GstBuffer * buffer)
{
GstPVRVideoSink *pvrsink = (GstPVRVideoSink *) meta->sink;
GST_LOG ("Releasing PVRMeta for buffer %p (src_mem:%p)",
buffer, meta->src_mem);
if (meta->src_mem) {
PVR2DERROR pvr_error;
GST_OBJECT_LOCK (pvrsink);
if (pvrsink->dcontext == NULL || pvrsink->dcontext->pvr_context == NULL) {
GST_OBJECT_UNLOCK (pvrsink);
goto done;
}
pvr_error = PVR2DMemFree (pvrsink->dcontext->pvr_context, meta->src_mem);
GST_OBJECT_UNLOCK (pvrsink);
if (pvr_error != PVR2D_OK)
GST_ERROR ("Failed to unwrap PVR memory buffer. Error : %s",
gst_pvr2d_error_get_string (pvr_error));
}
done:
gst_pvrvideosink_untrack_buffer (pvrsink, buffer);
gst_object_unref (pvrsink);
}
const GstMetaInfo *
gst_pvr_meta_get_info (void)
{
static const GstMetaInfo *pvr_meta_info = NULL;
if (pvr_meta_info == NULL) {
pvr_meta_info = gst_meta_register ("GstPVRMeta", "GstPVRMeta",
sizeof (GstPVRMeta),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) gst_pvr_meta_free,
(GstMetaCopyFunction) NULL, (GstMetaTransformFunction) NULL);
}
return pvr_meta_info;
}
/* Wrap existing buffers */
GstPVRMeta *
gst_buffer_add_pvr_meta (GstBuffer * buffer, GstElement * sink)
{
guint8 *data;
gsize size;
GstPVRMeta *meta;
PVR2DERROR pvr_error;
GstPVRVideoSink *pvrsink = (GstPVRVideoSink *) sink;
g_return_val_if_fail (gst_buffer_n_memory (buffer) > 0, NULL);
g_return_val_if_fail (pvrsink != NULL, NULL);
GST_LOG_OBJECT (pvrsink, "Adding PVRMeta to buffer %p", buffer);
/* Add the meta */
meta = (GstPVRMeta *) gst_buffer_add_meta (buffer, GST_PVR_META_INFO, NULL);
meta->src_mem = NULL;
meta->sink = gst_object_ref (pvrsink);
gst_pvrvideosink_track_buffer (pvrsink, buffer);
data = gst_buffer_map (buffer, &size, NULL, GST_MAP_READ);
GST_LOG_OBJECT (pvrsink, "data:%p, size:%" G_GSIZE_FORMAT, data, size);
GST_OBJECT_LOCK (pvrsink);
if (pvrsink->dcontext == NULL || pvrsink->dcontext->pvr_context == NULL)
goto no_pvr_context;
/* Map the memory and wrap it */
pvr_error =
PVR2DMemWrap (pvrsink->dcontext->pvr_context, data, 0, size, NULL,
&(meta->src_mem));
GST_OBJECT_UNLOCK (pvrsink);
gst_buffer_unmap (buffer, data, size);
if (pvr_error != PVR2D_OK)
goto wrap_error;
return meta;
wrap_error:
{
GST_WARNING_OBJECT (pvrsink, "Failed to Wrap buffer memory. Error : %s",
gst_pvr2d_error_get_string (pvr_error));
gst_buffer_remove_meta (buffer, (GstMeta *) meta);
return NULL;
}
no_pvr_context:
{
GST_OBJECT_UNLOCK (pvrsink);
GST_WARNING_OBJECT (pvrsink, "No PVR2D context available");
gst_buffer_remove_meta (buffer, (GstMeta *) meta);
return NULL;
}
}
/*
* GstDucatiBufferPool
*/
static void gst_pvr_buffer_pool_finalize (GObject * object);
#define gst_pvr_buffer_pool_parent_class parent_class
G_DEFINE_TYPE (GstPVRBufferPool, gst_pvr_buffer_pool, GST_TYPE_BUFFER_POOL);
static const gchar **
pvr_buffer_pool_get_options (GstBufferPool * pool)
{
static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT, NULL
};
return options;
}
static gboolean
pvr_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
{
GstPVRBufferPool *pvrpool = GST_PVR_BUFFER_POOL_CAST (pool);
GstVideoInfo info;
guint size, align;
gboolean ret;
const GstCaps *caps;
if (!gst_buffer_pool_config_get (config, &caps, &size, NULL, NULL, NULL,
&align))
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, size:%u, align:%u caps %" GST_PTR_FORMAT,
info.width, info.height, size, align, caps);
if (pvrpool->caps)
gst_caps_unref (pvrpool->caps);
pvrpool->caps = gst_caps_copy (caps);
pvrpool->info = info;
pvrpool->size = size;
gst_allocation_params_init (&pvrpool->params);
pvrpool->params.align = align;
pvrpool->padded_width = GST_VIDEO_INFO_WIDTH (&info);
pvrpool->padded_height = GST_VIDEO_INFO_HEIGHT (&info);
/* enable metadata based on config of the pool */
pvrpool->add_metavideo =
gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
#if 0
/* 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);
/* we need the video metadata too now */
priv->add_metavideo = TRUE;
}
/* 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;
#endif
GST_DEBUG_OBJECT (pool, "before calling parent class");
ret = GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
GST_DEBUG_OBJECT (pool, "parent_class returned %d", ret);
return ret;
/* 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;
}
}
/* This function handles GstXImageBuffer creation depending on XShm availability */
static GstFlowReturn
pvr_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstPVRBufferPool *pvrpool = GST_PVR_BUFFER_POOL_CAST (pool);
GstVideoInfo *info;
GstBuffer *pvr;
GstPVRMeta *meta;
info = &pvrpool->info;
pvr = gst_buffer_new_allocate (NULL, pvrpool->size, &pvrpool->params);
meta = gst_buffer_add_pvr_meta (pvr, pvrpool->pvrsink);
if (meta == NULL) {
gst_buffer_unref (pvr);
goto no_buffer;
}
if (pvrpool->add_metavideo) {
GstVideoMeta *meta;
GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
/* these are just the defaults for now */
meta = gst_buffer_add_video_meta (pvr, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (info), pvrpool->padded_width,
pvrpool->padded_height);
if (G_UNLIKELY (meta == NULL))
GST_WARNING_OBJECT (pool, "Failed to add GstVideoMeta");
#if 0
const GstVideoFormatInfo *vinfo = info->finfo;
gint i;
if (pvrpool->need_alignment) {
meta->width = GST_VIDEO_INFO_WIDTH (&pvrpool->info);
meta->height = GST_VIDEO_INFO_HEIGHT (&pvrpool->info);
/* FIXME, not quite correct, NV12 would apply the vedge twice on the second
* plane */
for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (info); i++) {
gint vedge, hedge, plane;
hedge =
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (vinfo, i,
pvrpool->align.padding_left);
vedge =
GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (vinfo, i,
pvrpool->align.padding_top);
plane = GST_VIDEO_FORMAT_INFO_PLANE (vinfo, i);
GST_LOG_OBJECT (pool, "comp %d, plane %d: hedge %d, vedge %d", i,
plane, hedge, vedge);
meta->offset[plane] += (vedge * meta->stride[plane]) + hedge;
}
}
#endif
}
*buffer = pvr;
return GST_FLOW_OK;
/* ERROR */
no_buffer:
{
GST_WARNING_OBJECT (pool, "can't create image");
return GST_FLOW_ERROR;
}
}
/** create new bufferpool
*/
GstBufferPool *
gst_pvr_buffer_pool_new (GstElement * pvrsink)
{
GstPVRBufferPool *pool;
g_return_val_if_fail (GST_IS_PVRVIDEOSINK (pvrsink), NULL);
GST_DEBUG_OBJECT (pvrsink, "Creating new GstPVRBufferPool");
pool = g_object_new (GST_TYPE_PVR_BUFFER_POOL, NULL);
pool->pvrsink = gst_object_ref (pvrsink);
return GST_BUFFER_POOL_CAST (pool);
}
static void
gst_pvr_buffer_pool_class_init (GstPVRBufferPoolClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstBufferPoolClass *gstbufferpool_class = (GstBufferPoolClass *) klass;
gobject_class->finalize = gst_pvr_buffer_pool_finalize;
gstbufferpool_class->get_options = pvr_buffer_pool_get_options;
gstbufferpool_class->set_config = pvr_buffer_pool_set_config;
gstbufferpool_class->alloc_buffer = pvr_buffer_pool_alloc;
}
static void
gst_pvr_buffer_pool_init (GstPVRBufferPool * pool)
{
}
static void
gst_pvr_buffer_pool_finalize (GObject * object)
{
GstPVRBufferPool *pool = GST_PVR_BUFFER_POOL_CAST (object);
GST_LOG_OBJECT (pool, "finalize PVR buffer pool %p", pool);
if (pool->caps)
gst_caps_unref (pool->caps);
gst_object_unref (pool->pvrsink);
G_OBJECT_CLASS (gst_pvr_buffer_pool_parent_class)->finalize (object);
}