1 /* 2 * gstvaapiutils_h26x_priv.h - H.26x related utilities 3 * 4 * Copyright (C) 2011-2014 Intel Corporation 5 * Author: Gwenole Beauchesne 6 * Copyright (C) 2017 Intel Corporation 7 * Author: Hyunjun Ko <zzoon@igalia.com> 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Lesser General Public License 11 * as published by the Free Software Foundation; either version 2.1 12 * 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 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, write to the Free 21 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 22 * Boston, MA 02110-1301 USA 23 */ 24 25 #ifndef GST_VAAPI_UTILS_H26X_PRIV_H 26 #define GST_VAAPI_UTILS_H26X_PRIV_H 27 28 #include <gst/base/gstbitwriter.h> 29 30 G_BEGIN_DECLS 31 32 /* Default CPB length (in milliseconds) */ 33 #define DEFAULT_CPB_LENGTH 1500 34 35 /* Scale factor for CPB size (HRD cpb_size_scale: min = 4) */ 36 #define SX_CPB_SIZE 4 37 38 /* Scale factor for bitrate (HRD bit_rate_scale: min = 6) */ 39 #define SX_BITRATE 6 40 41 /* Define default rate control mode ("constant-qp") */ 42 #define DEFAULT_RATECONTROL GST_VAAPI_RATECONTROL_CQP 43 44 /* ------------------------------------------------------------------------- */ 45 /* --- H.264/265 Bitstream Writer --- */ 46 /* ------------------------------------------------------------------------- */ 47 48 #define WRITE_UINT32(bs, val, nbits) \ 49 G_STMT_START { \ 50 if (!gst_bit_writer_put_bits_uint32 (bs, val, nbits)) { \ 51 GST_WARNING ("failed to write uint32, nbits: %d", nbits); \ 52 goto bs_error; \ 53 } \ 54 } G_STMT_END 55 56 #define WRITE_UE(bs, val) \ 57 G_STMT_START { \ 58 if (!bs_write_ue (bs, val)) { \ 59 GST_WARNING ("failed to write ue(v)"); \ 60 goto bs_error; \ 61 } \ 62 } G_STMT_END 63 64 #define WRITE_SE(bs, val) \ 65 G_STMT_START { \ 66 if (!bs_write_se (bs, val)) { \ 67 GST_WARNING ("failed to write se(v)"); \ 68 goto bs_error; \ 69 } \ 70 } G_STMT_END 71 72 G_GNUC_INTERNAL 73 gboolean 74 bs_write_ue (GstBitWriter * bs, guint32 value); 75 76 G_GNUC_INTERNAL 77 gboolean 78 bs_write_se (GstBitWriter * bs, gint32 value); 79 80 /* Write nal unit, applying emulation prevention bytes */ 81 G_GNUC_INTERNAL 82 gboolean 83 gst_vaapi_utils_h26x_write_nal_unit (GstBitWriter * bs, guint8 * nal, guint nal_size); 84 85 G_END_DECLS 86 87 #endif /* GST_VAAPI_UTILS_H26X_PRIV_H */ 88