1 /* 2 * Copyright (C) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef __GST_MEM_POOL_SRC_H__ 17 #define __GST_MEM_POOL_SRC_H__ 18 19 #include <gst/base/gstbasesrc.h> 20 21 G_BEGIN_DECLS 22 23 #ifndef GST_API_EXPORT 24 #define GST_API_EXPORT __attribute__((visibility("default"))) 25 #endif 26 27 #define GST_TYPE_MEM_POOL_SRC (gst_mem_pool_src_get_type()) 28 #define GST_MEM_POOL_SRC(obj) \ 29 (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MEM_POOL_SRC, GstMemPoolSrc)) 30 #define GST_MEM_POOL_SRC_CLASS(klass) \ 31 (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_MEM_POOL_SRC, GstMemPoolSrcClass)) 32 #define GST_MEM_POOL_SRC_GET_CLASS(obj) \ 33 (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_MEM_POOL_SRC, GstMemPoolSrcClass)) 34 #define GST_IS_MEM_POOL_SRC(obj) \ 35 (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_MEM_POOL_SRC)) 36 #define GST_IS_MEM_POOL_SRC_CLASS(klass) \ 37 (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_MEM_POOL_SRC)) 38 #define GST_MEM_POOL_SRC_CAST(obj) ((GstMemPoolSrc*)(obj)) 39 40 typedef struct _GstMemPoolSrc GstMemPoolSrc; 41 typedef struct _GstMemPoolSrcClass GstMemPoolSrcClass; 42 typedef struct _GstMemPoolSrcPrivate GstMemPoolSrcPrivate; 43 typedef GstFlowReturn (*BufferAvailable) (GstMemPoolSrc *memsrc, gpointer user_data); 44 45 struct _GstMemPoolSrc { 46 GstBaseSrc basesrc; 47 GstCaps *caps; 48 guint buffer_size; 49 guint buffer_num; 50 51 /* < private > */ 52 GstMemPoolSrcPrivate *priv; 53 }; 54 55 struct _GstMemPoolSrcClass { 56 GstBaseSrcClass parent; 57 58 // for API and action calling, subclass need accomplish it 59 GstBuffer *(*pull_buffer) (GstMemPoolSrc *memsrc); 60 GstFlowReturn (*push_buffer) (GstMemPoolSrc *memsrc, GstBuffer *buffer); 61 }; 62 63 // for subclass to use 64 GstFlowReturn gst_mem_pool_src_buffer_available(GstMemPoolSrc *memsrc); 65 // for app to use 66 GST_API_EXPORT GstBuffer *gst_mem_pool_src_pull_buffer(GstMemPoolSrc *memsrc); 67 68 GST_API_EXPORT GstFlowReturn gst_mem_pool_src_push_buffer(GstMemPoolSrc *memsrc, GstBuffer *buffer); 69 70 GST_API_EXPORT void gst_mem_pool_src_set_callback(GstMemPoolSrc *memsrc, BufferAvailable callback, 71 gpointer user_data, GDestroyNotify notify); 72 73 GST_API_EXPORT GType gst_mem_pool_src_get_type(void); 74 75 G_END_DECLS 76 #endif