1 /* 2 * GStreamer 3 * Copyright (C) 2010 Texas Instruments, Inc 4 * Copyright (C) 2011 Thiago Santos <thiago.sousa.santos@collabora.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public 17 * License along with this library; if not, write to the 18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 23 #ifndef __GST_BASE_CAMERA_SRC_H__ 24 #define __GST_BASE_CAMERA_SRC_H__ 25 26 #ifndef GST_USE_UNSTABLE_API 27 #warning "GstBaseCameraSrc is unstable API and may change in future." 28 #warning "You can define GST_USE_UNSTABLE_API to avoid this warning." 29 #endif 30 31 #include <gst/gst.h> 32 #include <gst/gstbin.h> 33 #include "basecamerabinsrc-prelude.h" 34 #include "gstcamerabin-enum.h" 35 #include "gstcamerabinpreview.h" 36 37 G_BEGIN_DECLS 38 39 #define GST_TYPE_BASE_CAMERA_SRC \ 40 (gst_base_camera_src_get_type()) 41 #define GST_BASE_CAMERA_SRC(obj) \ 42 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_CAMERA_SRC,GstBaseCameraSrc)) 43 #define GST_BASE_CAMERA_SRC_GET_CLASS(obj) \ 44 (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BASE_CAMERA_SRC, GstBaseCameraSrcClass)) 45 #define GST_BASE_CAMERA_SRC_CLASS(klass) \ 46 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_CAMERA_SRC,GstBaseCameraSrcClass)) 47 #define GST_IS_BASE_CAMERA_SRC(obj) \ 48 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_CAMERA_SRC)) 49 #define GST_IS_BASE_CAMERA_SRC_CLASS(klass) \ 50 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_CAMERA_SRC)) 51 #define GST_BASE_CAMERA_SRC_CAST(obj) \ 52 ((GstBaseCameraSrc *) (obj)) 53 GST_BASE_CAMERA_BIN_SRC_API 54 GType gst_base_camera_src_get_type (void); 55 56 typedef struct _GstBaseCameraSrc GstBaseCameraSrc; 57 typedef struct _GstBaseCameraSrcClass GstBaseCameraSrcClass; 58 59 #define GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME "vfsrc" 60 #define GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME "imgsrc" 61 #define GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME "vidsrc" 62 63 #define GST_BASE_CAMERA_SRC_PREVIEW_MESSAGE_NAME "preview-image" 64 65 /** 66 * GstBaseCameraSrc: 67 */ 68 struct _GstBaseCameraSrc 69 { 70 GstBin parent; 71 72 GstCameraBinMode mode; 73 74 gboolean auto_start; 75 gboolean capturing; 76 GMutex capturing_mutex; 77 78 /* Preview convert pipeline */ 79 GstCaps *preview_caps; 80 gboolean post_preview; 81 GstElement *preview_filter; 82 GstCameraBinPreviewPipelineData *preview_pipeline; 83 84 /* Resolution of the buffers configured to camerabin */ 85 gint width; 86 gint height; 87 88 gfloat zoom; 89 gfloat max_zoom; 90 91 gpointer _gst_reserved[GST_PADDING_LARGE]; 92 }; 93 94 95 /** 96 * GstBaseCameraSrcClass: 97 * @construct_pipeline: construct pipeline 98 * @setup_pipeline: configure pipeline for the chosen settings 99 * @set_zoom: set the zoom 100 * @set_mode: set the mode 101 */ 102 struct _GstBaseCameraSrcClass 103 { 104 GstBinClass parent; 105 106 /* Construct pipeline. (called in GST_STATE_CHANGE_NULL_TO_READY) Optional. */ 107 gboolean (*construct_pipeline) (GstBaseCameraSrc *self); 108 109 /* (called in GST_STATE_CHANGE_READY_TO_PAUSED). Optional. */ 110 gboolean (*setup_pipeline) (GstBaseCameraSrc *self); 111 112 /* Set the zoom. If set, called when changing 'zoom' property. Optional. */ 113 void (*set_zoom) (GstBaseCameraSrc *self, gfloat zoom); 114 115 /* Set the mode. If set, called when changing 'mode' property. Optional. */ 116 gboolean (*set_mode) (GstBaseCameraSrc *self, 117 GstCameraBinMode mode); 118 119 /* Set preview caps. If set, called called when setting new 'preview-caps'. Optional. */ 120 gboolean (*set_preview) (GstBaseCameraSrc *self, 121 GstCaps *preview_caps); 122 123 /* Called by the handler for 'start-capture'. Mandatory. */ 124 gboolean (*start_capture) (GstBaseCameraSrc * src); 125 126 /* Called by the handler for 'stop-capture'. Mandatory. */ 127 void (*stop_capture) (GstBaseCameraSrc * src); 128 129 gpointer _gst_reserved[GST_PADDING_LARGE]; 130 }; 131 132 133 #define MIN_ZOOM 1.0f 134 #define MAX_ZOOM 10.0f 135 #define ZOOM_1X MIN_ZOOM 136 137 GST_BASE_CAMERA_BIN_SRC_API 138 gboolean gst_base_camera_src_set_mode (GstBaseCameraSrc *self, GstCameraBinMode mode); 139 140 GST_BASE_CAMERA_BIN_SRC_API 141 void gst_base_camera_src_setup_zoom (GstBaseCameraSrc * self); 142 143 GST_BASE_CAMERA_BIN_SRC_API 144 void gst_base_camera_src_setup_preview (GstBaseCameraSrc * self, GstCaps * preview_caps); 145 146 GST_BASE_CAMERA_BIN_SRC_API 147 void gst_base_camera_src_finish_capture (GstBaseCameraSrc *self); 148 149 150 GST_BASE_CAMERA_BIN_SRC_API 151 void gst_base_camera_src_post_preview (GstBaseCameraSrc *self, GstSample * sample); 152 // XXX add methods to get/set img capture and vid capture caps.. 153 154 G_END_DECLS 155 156 #endif /* __GST_BASE_CAMERA_SRC_H__ */ 157