2 * Copyright (C) <2005> Julien Moutte <julien@moutte.net>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
25 #include "xvimagepool.h"
26 #include "xvimageallocator.h"
28 /* Debugging category */
29 #include <gst/gstinfo.h>
31 /* Helper functions */
32 #include <gst/video/video.h>
33 #include <gst/video/gstvideometa.h>
34 #include <gst/video/gstvideopool.h>
37 GST_DEBUG_CATEGORY_EXTERN (gst_debug_xvimagepool);
38 #define GST_CAT_DEFAULT gst_debug_xvimagepool
41 struct _GstXvImageBufferPoolPrivate
43 GstXvImageAllocator *allocator;
47 GstVideoRectangle crop;
49 GstVideoAlignment align;
52 gboolean add_metavideo;
53 gboolean need_alignment;
57 static void gst_xvimage_buffer_pool_finalize (GObject * object);
59 #define GST_XVIMAGE_BUFFER_POOL_GET_PRIVATE(obj) \
60 (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_XVIMAGE_BUFFER_POOL, GstXvImageBufferPoolPrivate))
62 #define gst_xvimage_buffer_pool_parent_class parent_class
63 G_DEFINE_TYPE (GstXvImageBufferPool, gst_xvimage_buffer_pool,
64 GST_TYPE_BUFFER_POOL);
67 xvimage_buffer_pool_get_options (GstBufferPool * pool)
69 static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META,
70 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT, NULL
77 xvimage_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
79 GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
80 GstXvImageBufferPoolPrivate *priv = xvpool->priv;
83 GstXvContext *context;
85 if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL))
91 /* now parse the caps from the config */
92 if (!gst_video_info_from_caps (&info, caps))
95 GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height,
98 context = gst_xvimage_allocator_peek_context (priv->allocator);
100 priv->im_format = gst_xvcontext_get_format_from_info (context, &info);
101 if (priv->im_format == -1)
105 gst_caps_unref (priv->caps);
106 priv->caps = gst_caps_ref (caps);
108 /* enable metadata based on config of the pool */
109 priv->add_metavideo =
110 gst_buffer_pool_config_has_option (config,
111 GST_BUFFER_POOL_OPTION_VIDEO_META);
113 /* parse extra alignment info */
114 priv->need_alignment = gst_buffer_pool_config_has_option (config,
115 GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
117 if (priv->need_alignment) {
118 gst_buffer_pool_config_get_video_alignment (config, &priv->align);
120 GST_LOG_OBJECT (pool, "padding %u-%ux%u-%u", priv->align.padding_top,
121 priv->align.padding_left, priv->align.padding_left,
122 priv->align.padding_bottom);
124 /* do padding and alignment */
125 gst_video_info_align (&info, &priv->align);
127 /* we need the video metadata too now */
128 priv->add_metavideo = TRUE;
130 gst_video_alignment_reset (&priv->align);
133 /* add the padding */
135 GST_VIDEO_INFO_WIDTH (&info) + priv->align.padding_left +
136 priv->align.padding_right;
137 priv->padded_height =
138 GST_VIDEO_INFO_HEIGHT (&info) + priv->align.padding_top +
139 priv->align.padding_bottom;
142 priv->crop.x = priv->align.padding_left;
143 priv->crop.y = priv->align.padding_top;
144 priv->crop.w = priv->info.width;
145 priv->crop.h = priv->info.height;
147 return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
152 GST_WARNING_OBJECT (pool, "invalid config");
157 GST_WARNING_OBJECT (pool, "no caps in config");
162 GST_WARNING_OBJECT (pool,
163 "failed getting geometry from caps %" GST_PTR_FORMAT, caps);
168 GST_WARNING_OBJECT (pool, "failed to get format from caps %"
169 GST_PTR_FORMAT, caps);
174 /* This function handles GstXImageBuffer creation depending on XShm availability */
176 xvimage_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
177 GstBufferPoolAcquireParams * params)
179 GstXvImageBufferPool *xvpool = GST_XVIMAGE_BUFFER_POOL_CAST (pool);
180 GstXvImageBufferPoolPrivate *priv = xvpool->priv;
187 xvimage = gst_buffer_new ();
189 mem = gst_xvimage_allocator_alloc (priv->allocator, priv->im_format,
190 priv->padded_width, priv->padded_height, &priv->crop, NULL);
193 gst_buffer_unref (xvimage);
196 gst_buffer_append_memory (xvimage, mem);
198 if (priv->add_metavideo) {
199 GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
200 gst_buffer_add_video_meta_full (xvimage, GST_VIDEO_FRAME_FLAG_NONE,
201 GST_VIDEO_INFO_FORMAT (info), GST_VIDEO_INFO_WIDTH (info),
202 GST_VIDEO_INFO_HEIGHT (info), GST_VIDEO_INFO_N_PLANES (info),
203 info->offset, info->stride);
213 GST_WARNING_OBJECT (pool, "can't create image");
214 return GST_FLOW_ERROR;
219 gst_xvimage_buffer_pool_new (GstXvImageAllocator * allocator)
221 GstXvImageBufferPool *pool;
223 pool = g_object_new (GST_TYPE_XVIMAGE_BUFFER_POOL, NULL);
224 pool->priv->allocator = gst_object_ref (allocator);
226 GST_LOG_OBJECT (pool, "new XvImage buffer pool %p", pool);
228 return GST_BUFFER_POOL_CAST (pool);
232 gst_xvimage_buffer_pool_class_init (GstXvImageBufferPoolClass * klass)
234 GObjectClass *gobject_class = (GObjectClass *) klass;
235 GstBufferPoolClass *gstbufferpool_class = (GstBufferPoolClass *) klass;
237 g_type_class_add_private (klass, sizeof (GstXvImageBufferPoolPrivate));
239 gobject_class->finalize = gst_xvimage_buffer_pool_finalize;
241 gstbufferpool_class->get_options = xvimage_buffer_pool_get_options;
242 gstbufferpool_class->set_config = xvimage_buffer_pool_set_config;
243 gstbufferpool_class->alloc_buffer = xvimage_buffer_pool_alloc;
247 gst_xvimage_buffer_pool_init (GstXvImageBufferPool * pool)
249 pool->priv = GST_XVIMAGE_BUFFER_POOL_GET_PRIVATE (pool);
253 gst_xvimage_buffer_pool_finalize (GObject * object)
255 GstXvImageBufferPool *pool = GST_XVIMAGE_BUFFER_POOL_CAST (object);
256 GstXvImageBufferPoolPrivate *priv = pool->priv;
258 GST_LOG_OBJECT (pool, "finalize XvImage buffer pool %p", pool);
261 gst_caps_unref (priv->caps);
263 gst_object_unref (priv->allocator);
265 G_OBJECT_CLASS (gst_xvimage_buffer_pool_parent_class)->finalize (object);