1 /*
2 * GStreamer
3 * Copyright (C) 2016 Igalia
4 *
5 * Authors:
6 * Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
7 * Javier Martin <javiermartin@by.com.es>
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
22 * Boston, MA 02110-1301, USA.
23 *
24 */
25
26 #ifdef HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29
30 #include <gst/video/gstvideometa.h>
31
32 #include "gstkmsbufferpool.h"
33 #include "gstkmsallocator.h"
34
35 GST_DEBUG_CATEGORY_STATIC (gst_kms_buffer_pool_debug);
36 #define GST_CAT_DEFAULT gst_kms_buffer_pool_debug
37
38 struct _GstKMSBufferPoolPrivate
39 {
40 GstVideoInfo vinfo;
41 GstAllocator *allocator;
42 gboolean add_videometa;
43 gboolean has_prime_export;
44 };
45
46 #define parent_class gst_kms_buffer_pool_parent_class
47 G_DEFINE_TYPE_WITH_CODE (GstKMSBufferPool, gst_kms_buffer_pool,
48 GST_TYPE_VIDEO_BUFFER_POOL, G_ADD_PRIVATE (GstKMSBufferPool);
49 GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "kmsbufferpool", 0,
50 "KMS buffer pool"));
51
52 static const gchar **
gst_kms_buffer_pool_get_options(GstBufferPool * pool)53 gst_kms_buffer_pool_get_options (GstBufferPool * pool)
54 {
55 static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META,
56 GST_BUFFER_POOL_OPTION_KMS_BUFFER,
57 GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT,
58 NULL
59 };
60 return options;
61 }
62
63 static gboolean
gst_kms_buffer_pool_set_config(GstBufferPool * pool,GstStructure * config)64 gst_kms_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
65 {
66 GstKMSBufferPool *vpool;
67 GstKMSBufferPoolPrivate *priv;
68 GstCaps *caps;
69 GstVideoInfo vinfo;
70 GstAllocator *allocator;
71 GstAllocationParams params;
72
73 vpool = GST_KMS_BUFFER_POOL_CAST (pool);
74 priv = vpool->priv;
75
76 if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL))
77 goto wrong_config;
78
79 if (!caps)
80 goto no_caps;
81
82 /* now parse the caps from the config */
83 if (!gst_video_info_from_caps (&vinfo, caps))
84 goto wrong_caps;
85
86 allocator = NULL;
87 gst_buffer_pool_config_get_allocator (config, &allocator, ¶ms);
88
89 /* not our allocator, not our buffers */
90 if (allocator && GST_IS_KMS_ALLOCATOR (allocator)) {
91 if (priv->allocator)
92 gst_object_unref (priv->allocator);
93 priv->allocator = gst_object_ref (allocator);
94 }
95 if (!priv->allocator)
96 goto no_allocator;
97
98 priv->vinfo = vinfo;
99
100 /* enable metadata based on config of the pool */
101 priv->add_videometa = gst_buffer_pool_config_has_option (config,
102 GST_BUFFER_POOL_OPTION_VIDEO_META);
103 priv->has_prime_export = gst_buffer_pool_config_has_option (config,
104 GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT);
105
106 return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
107
108 /* ERRORS */
109 wrong_config:
110 {
111 GST_WARNING_OBJECT (pool, "invalid config");
112 return FALSE;
113 }
114 no_caps:
115 {
116 GST_WARNING_OBJECT (pool, "no caps in config");
117 return FALSE;
118 }
119 wrong_caps:
120 {
121 GST_WARNING_OBJECT (pool,
122 "failed getting geometry from caps %" GST_PTR_FORMAT, caps);
123 return FALSE;
124 }
125 no_allocator:
126 {
127 GST_WARNING_OBJECT (pool, "no valid allocator in pool");
128 return FALSE;
129 }
130 }
131
132 static GstFlowReturn
gst_kms_buffer_pool_alloc_buffer(GstBufferPool * pool,GstBuffer ** buffer,GstBufferPoolAcquireParams * params)133 gst_kms_buffer_pool_alloc_buffer (GstBufferPool * pool, GstBuffer ** buffer,
134 GstBufferPoolAcquireParams * params)
135 {
136 GstKMSBufferPool *vpool;
137 GstKMSBufferPoolPrivate *priv;
138 GstVideoInfo *info;
139 GstMemory *mem;
140
141 vpool = GST_KMS_BUFFER_POOL_CAST (pool);
142 priv = vpool->priv;
143 info = &priv->vinfo;
144
145 mem = gst_kms_allocator_bo_alloc (priv->allocator, info);
146 if (!mem)
147 goto no_memory;
148
149 if (vpool->priv->has_prime_export) {
150 GstMemory *dmabufmem;
151
152 dmabufmem = gst_kms_allocator_dmabuf_export (priv->allocator, mem);
153 if (dmabufmem)
154 mem = dmabufmem;
155 else
156 GST_WARNING_OBJECT (pool, "Failed to export DMABuf from Dumb buffer.");
157 }
158
159 *buffer = gst_buffer_new ();
160 gst_buffer_append_memory (*buffer, mem);
161
162 if (priv->add_videometa) {
163 GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
164
165 gst_buffer_add_video_meta_full (*buffer, GST_VIDEO_FRAME_FLAG_NONE,
166 GST_VIDEO_INFO_FORMAT (info),
167 GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info),
168 GST_VIDEO_INFO_N_PLANES (info), info->offset, info->stride);
169 }
170
171 return GST_FLOW_OK;
172
173 /* ERROR */
174 no_memory:
175 {
176 GST_WARNING_OBJECT (pool, "can't create memory");
177 return GST_FLOW_ERROR;
178 }
179 }
180
181 static void
gst_kms_buffer_pool_finalize(GObject * object)182 gst_kms_buffer_pool_finalize (GObject * object)
183 {
184 GstKMSBufferPool *pool;
185 GstKMSBufferPoolPrivate *priv;
186
187 pool = GST_KMS_BUFFER_POOL (object);
188 priv = pool->priv;
189
190 if (priv->allocator)
191 gst_object_unref (priv->allocator);
192
193 G_OBJECT_CLASS (parent_class)->finalize (object);
194 }
195
196 static void
gst_kms_buffer_pool_init(GstKMSBufferPool * pool)197 gst_kms_buffer_pool_init (GstKMSBufferPool * pool)
198 {
199 pool->priv = gst_kms_buffer_pool_get_instance_private (pool);
200 }
201
202 static void
gst_kms_buffer_pool_class_init(GstKMSBufferPoolClass * klass)203 gst_kms_buffer_pool_class_init (GstKMSBufferPoolClass * klass)
204 {
205 GObjectClass *gobject_class;
206 GstBufferPoolClass *gstbufferpool_class;
207
208 gobject_class = (GObjectClass *) klass;
209 gstbufferpool_class = (GstBufferPoolClass *) klass;
210
211 gobject_class->finalize = gst_kms_buffer_pool_finalize;
212
213 gstbufferpool_class->get_options = gst_kms_buffer_pool_get_options;
214 gstbufferpool_class->set_config = gst_kms_buffer_pool_set_config;
215 gstbufferpool_class->alloc_buffer = gst_kms_buffer_pool_alloc_buffer;
216 }
217
218 GstBufferPool *
gst_kms_buffer_pool_new(void)219 gst_kms_buffer_pool_new (void)
220 {
221 GstBufferPool *pool;
222
223 pool = g_object_new (GST_TYPE_KMS_BUFFER_POOL, NULL);
224 gst_object_ref_sink (pool);
225
226 return pool;
227 }
228