1 /* 2 * GStreamer 3 * 4 * Copyright (C) 2012 Cisco Systems, Inc. 5 * Author: Youness Alaoui <youness.alaoui@collabora.co.uk> 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public 18 * License along with this library; if not, write to the 19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 */ 22 23 24 #ifndef __GST_UVC_H264_SRC_H__ 25 #define __GST_UVC_H264_SRC_H__ 26 27 #ifdef HAVE_CONFIG_H 28 # include <config.h> 29 #endif 30 31 #include <gst/gst.h> 32 #include <gst/basecamerabinsrc/gstbasecamerasrc.h> 33 #include <libusb.h> 34 35 #include "uvc_h264.h" 36 37 G_BEGIN_DECLS 38 39 #define GST_TYPE_UVC_H264_SRC \ 40 (gst_uvc_h264_src_get_type()) 41 #define GST_UVC_H264_SRC(obj) \ 42 (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_UVC_H264_SRC, GstUvcH264Src)) 43 #define GST_UVC_H264_SRC_CLASS(klass) \ 44 (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_UVC_H264_SRC, GstUvcH264SrcClass)) 45 #define GST_IS_UVC_H264_SRC(obj) \ 46 (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_UVC_H264_SRC)) 47 #define GST_IS_UVC_H264_SRC_CLASS(klass) \ 48 (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_UVC_H264_SRC)) 49 GType gst_uvc_h264_src_get_type (void); 50 51 typedef struct _GstUvcH264Src GstUvcH264Src; 52 typedef struct _GstUvcH264SrcClass GstUvcH264SrcClass; 53 54 enum GstVideoRecordingStatus { 55 GST_VIDEO_RECORDING_STATUS_DONE, 56 GST_VIDEO_RECORDING_STATUS_STARTING, 57 GST_VIDEO_RECORDING_STATUS_RUNNING, 58 GST_VIDEO_RECORDING_STATUS_FINISHING 59 }; 60 61 enum { 62 QP_I_FRAME = 0, 63 QP_P_FRAME, 64 QP_B_FRAME, 65 QP_FRAMES 66 }; 67 68 typedef enum { 69 UVC_H264_SRC_FORMAT_NONE, 70 UVC_H264_SRC_FORMAT_JPG, 71 UVC_H264_SRC_FORMAT_H264, 72 UVC_H264_SRC_FORMAT_RAW 73 } GstUvcH264SrcFormat; 74 75 /** 76 * GstUcH264Src: 77 * 78 */ 79 struct _GstUvcH264Src 80 { 81 GstBaseCameraSrc parent; 82 83 GstPad *vfsrc; 84 GstPad *imgsrc; 85 GstPad *vidsrc; 86 87 /* source elements */ 88 GstElement *v4l2_src; 89 GstElement *mjpg_demux; 90 GstElement *jpeg_dec; 91 GstElement *vid_colorspace; 92 GstElement *vf_colorspace; 93 94 GstUvcH264SrcFormat main_format; 95 guint16 main_width; 96 guint16 main_height; 97 guint32 main_frame_interval; 98 UvcH264StreamFormat main_stream_format; 99 guint16 main_profile; 100 GstUvcH264SrcFormat secondary_format; 101 guint16 secondary_width; 102 guint16 secondary_height; 103 guint32 secondary_frame_interval; 104 105 int v4l2_fd; 106 guint8 h264_unit_id; 107 libusb_context *usb_ctx; 108 109 GstPadEventFunction srcpad_event_func; 110 GstEvent *key_unit_event; 111 GstSegment segment; 112 113 gboolean started; 114 115 /* When restarting the source */ 116 gboolean reconfiguring; 117 gboolean vid_newseg; 118 gboolean vf_newseg; 119 120 gchar *colorspace_name; 121 gchar *jpeg_decoder_name; 122 int num_clock_samples; 123 124 /* v4l2src proxied properties */ 125 guint32 num_buffers; 126 gchar *device; 127 128 /* Static controls */ 129 guint32 initial_bitrate; 130 guint16 slice_units; 131 UvcH264SliceMode slice_mode; 132 guint16 iframe_period; 133 UvcH264UsageType usage_type; 134 UvcH264Entropy entropy; 135 gboolean enable_sei; 136 guint8 num_reorder_frames; 137 gboolean preview_flipped; 138 guint16 leaky_bucket_size; 139 140 /* Dynamic controls */ 141 UvcH264RateControl rate_control; 142 gboolean fixed_framerate; 143 guint8 level_idc; 144 guint32 peak_bitrate; 145 guint32 average_bitrate; 146 gint8 min_qp[QP_FRAMES]; 147 gint8 max_qp[QP_FRAMES]; 148 guint8 ltr_buffer_size; 149 guint8 ltr_encoder_control; 150 }; 151 152 153 /** 154 * GstUvcH264SrcClass: 155 * 156 */ 157 struct _GstUvcH264SrcClass 158 { 159 GstBaseCameraSrcClass parent; 160 }; 161 162 G_END_DECLS 163 164 #endif /* __GST_UVC_H264_SRC_H__ */ 165