/* GStreamer * Copyright (C) 2021 Intel Corporation * Author: He Junyan * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the0 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "gsth265bitwriter.h" #include #include #include /******************************** Utils ********************************/ #define SIGNED(val) (2 * ABS(val) - ((val) > 0)) /* Write an unsigned integer Exp-Golomb-coded syntax element. i.e. ue(v) */ static gboolean _bs_write_ue (GstBitWriter * bs, guint32 value) { guint32 size_in_bits = 0; guint32 tmp_value = ++value; while (tmp_value) { ++size_in_bits; tmp_value >>= 1; } if (size_in_bits > 1 && !gst_bit_writer_put_bits_uint32 (bs, 0, size_in_bits - 1)) return FALSE; if (!gst_bit_writer_put_bits_uint32 (bs, value, size_in_bits)) return FALSE; return TRUE; } #define WRITE_BITS_UNCHECK(bw, val, nbits) \ (nbits <= 8 ? gst_bit_writer_put_bits_uint8 (bw, val, nbits) : \ (nbits <= 16 ? gst_bit_writer_put_bits_uint16 (bw, val, nbits) : \ (nbits <= 32 ? gst_bit_writer_put_bits_uint32 (bw, val, nbits) : \ FALSE))) #define WRITE_BITS(bw, val, nbits) \ if (!WRITE_BITS_UNCHECK (bw, val, nbits)) { \ g_warning ("Unsupported bit size: %u", nbits); \ have_space = FALSE; \ goto error; \ } #define WRITE_UE_UNCHECK(bw, val) _bs_write_ue (bw, val) #ifdef WRITE_UE #undef WRITE_UE #endif #define WRITE_UE(bw, val) \ if (!(have_space = WRITE_UE_UNCHECK (bw, val))) \ goto error; \ #define WRITE_UE_MAX(bw, val, max) \ if ((guint32) val > (max) || !(have_space = WRITE_UE_UNCHECK (bw, val))) \ goto error; #define WRITE_SE(bw, val) WRITE_UE (bw, SIGNED (val)) #define WRITE_SE_RANGE(bw, val, min, max) \ if (val > max || val < min || \ !(have_space = WRITE_UE_UNCHECK (bw, SIGNED (val)))) \ goto error; #define WRITE_BYTES_UNCHECK(bw, ptr, nbytes) \ gst_bit_writer_put_bytes(bw, ptr, nbytes) #ifdef WRITE_BYTES #undef WRITE_BYTES #endif #define WRITE_BYTES(bw, ptr, nbytes) \ if (!(have_space = WRITE_BYTES_UNCHECK (bw, ptr, nbytes))) \ goto error; /***************************** End of Utils ****************************/ #define EXTENDED_SAR 255 /**** Default scaling_lists according to Table 7-5 and 7-6 *****/ /* Table 7-5 */ static const guint8 default_scaling_list0[16] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16 }; /* Combined the values in Table 7-6 to make the calculation easier * Default scaling list of 8x8 and 16x16 matrices for matrixId = 0, 1 and 2 * Default scaling list of 32x32 matrix for matrixId = 0 */ static const guint8 default_scaling_list1[64] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 16, 17, 16, 17, 18, 17, 18, 18, 17, 18, 21, 19, 20, 21, 20, 19, 21, 24, 22, 22, 24, 24, 22, 22, 24, 25, 25, 27, 30, 27, 25, 25, 29, 31, 35, 35, 31, 29, 36, 41, 44, 41, 36, 47, 54, 54, 47, 65, 70, 65, 88, 88, 115 }; /* Combined the values in Table 7-6 to make the calculation easier * Default scaling list of 8x8 and 16x16 matrices for matrixId = 3, 4 and 5 * Default scaling list of 32x32 matrix for matrixId = 1 */ static const guint8 default_scaling_list2[64] = { 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 20, 20, 20, 20, 20, 20, 20, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 28, 28, 28, 28, 28, 28, 33, 33, 33, 33, 33, 41, 41, 41, 41, 54, 54, 54, 71, 71, 91 }; static gboolean _h265_bit_writer_profile_tier_level (const GstH265ProfileTierLevel * ptl, guint8 maxNumSubLayersMinus1, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i, j; GST_DEBUG ("writing profile_tier_level"); WRITE_BITS (bw, ptl->profile_space, 2); WRITE_BITS (bw, ptl->tier_flag, 1); WRITE_BITS (bw, ptl->profile_idc, 5); for (j = 0; j < 32; j++) WRITE_BITS (bw, ptl->profile_compatibility_flag[j], 1); WRITE_BITS (bw, ptl->progressive_source_flag, 1); WRITE_BITS (bw, ptl->interlaced_source_flag, 1); WRITE_BITS (bw, ptl->non_packed_constraint_flag, 1); WRITE_BITS (bw, ptl->frame_only_constraint_flag, 1); if (ptl->profile_idc == 4 || ptl->profile_compatibility_flag[4] || ptl->profile_idc == 5 || ptl->profile_compatibility_flag[5] || ptl->profile_idc == 6 || ptl->profile_compatibility_flag[6] || ptl->profile_idc == 7 || ptl->profile_compatibility_flag[7] || ptl->profile_idc == 8 || ptl->profile_compatibility_flag[8] || ptl->profile_idc == 9 || ptl->profile_compatibility_flag[9] || ptl->profile_idc == 10 || ptl->profile_compatibility_flag[10] || ptl->profile_idc == 11 || ptl->profile_compatibility_flag[11]) { WRITE_BITS (bw, ptl->max_12bit_constraint_flag, 1); WRITE_BITS (bw, ptl->max_10bit_constraint_flag, 1); WRITE_BITS (bw, ptl->max_8bit_constraint_flag, 1); WRITE_BITS (bw, ptl->max_422chroma_constraint_flag, 1); WRITE_BITS (bw, ptl->max_420chroma_constraint_flag, 1); WRITE_BITS (bw, ptl->max_monochrome_constraint_flag, 1); WRITE_BITS (bw, ptl->intra_constraint_flag, 1); WRITE_BITS (bw, ptl->one_picture_only_constraint_flag, 1); WRITE_BITS (bw, ptl->lower_bit_rate_constraint_flag, 1); if (ptl->profile_idc == 5 || ptl->profile_compatibility_flag[5] || ptl->profile_idc == 9 || ptl->profile_compatibility_flag[9] || ptl->profile_idc == 10 || ptl->profile_compatibility_flag[10] || ptl->profile_idc == 11 || ptl->profile_compatibility_flag[11]) { WRITE_BITS (bw, ptl->max_14bit_constraint_flag, 1); /* general_reserved_zero_33bits */ WRITE_BITS (bw, 0, 32); WRITE_BITS (bw, 0, 1); } else { /* general_reserved_zero_34bits */ WRITE_BITS (bw, 0, 32); WRITE_BITS (bw, 0, 2); } } else if (ptl->profile_idc == 2 || ptl->profile_compatibility_flag[2]) { /* general_reserved_zero_7bits */ WRITE_BITS (bw, 0, 7); WRITE_BITS (bw, ptl->one_picture_only_constraint_flag, 1); /* general_reserved_zero_35bits */ WRITE_BITS (bw, 0, 32); WRITE_BITS (bw, 0, 3); } else { /* general_reserved_zero_43bits */ WRITE_BITS (bw, 0, 32); WRITE_BITS (bw, 0, 11); } /* general_inbld_flag, just set to 0 */ WRITE_BITS (bw, 0, 1); WRITE_BITS (bw, ptl->level_idc, 8); for (j = 0; j < maxNumSubLayersMinus1; j++) { if (ptl->sub_layer_profile_present_flag[j]) { GST_WARNING ("sub layer profile does not supported now"); goto error; } WRITE_BITS (bw, ptl->sub_layer_profile_present_flag[j], 1); if (ptl->sub_layer_level_present_flag[j]) { GST_WARNING ("sub layer level does not supported now"); goto error; } WRITE_BITS (bw, ptl->sub_layer_level_present_flag[j], 1); } if (maxNumSubLayersMinus1 > 0) { for (i = maxNumSubLayersMinus1; i < 8; i++) /* reserved_zero_2bits */ WRITE_BITS (bw, 0, 2); } /* TODO: Add sub layers profiles. */ *space = TRUE; return TRUE; error: GST_WARNING ("error to write profile_tier_level"); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sub_layer_hrd_parameters (const GstH265SubLayerHRDParams * sub_hrd, guint8 CpbCnt, guint8 sub_pic_hrd_params_present_flag, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i; GST_DEBUG ("writing \"subLayer HRD Parameters\""); for (i = 0; i <= CpbCnt; i++) { WRITE_UE_MAX (bw, sub_hrd->bit_rate_value_minus1[i], G_MAXUINT32 - 1); WRITE_UE_MAX (bw, sub_hrd->cpb_size_value_minus1[i], G_MAXUINT32 - 1); if (sub_pic_hrd_params_present_flag) { WRITE_UE_MAX (bw, sub_hrd->cpb_size_du_value_minus1[i], G_MAXUINT32 - 1); WRITE_UE_MAX (bw, sub_hrd->bit_rate_du_value_minus1[i], G_MAXUINT32 - 1); } WRITE_BITS (bw, sub_hrd->cbr_flag[i], 1); } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"subLayer HRD Parameters \""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_hrd_parameters (const GstH265HRDParams * hrd, guint8 commonInfPresentFlag, guint8 maxNumSubLayersMinus1, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i; GST_DEBUG ("writing \"HRD Parameters\""); if (commonInfPresentFlag) { WRITE_BITS (bw, hrd->nal_hrd_parameters_present_flag, 1); WRITE_BITS (bw, hrd->vcl_hrd_parameters_present_flag, 1); if (hrd->nal_hrd_parameters_present_flag || hrd->vcl_hrd_parameters_present_flag) { WRITE_BITS (bw, hrd->sub_pic_hrd_params_present_flag, 1); if (hrd->sub_pic_hrd_params_present_flag) { WRITE_BITS (bw, hrd->tick_divisor_minus2, 8); WRITE_BITS (bw, hrd->du_cpb_removal_delay_increment_length_minus1, 5); WRITE_BITS (bw, hrd->sub_pic_cpb_params_in_pic_timing_sei_flag, 1); WRITE_BITS (bw, hrd->dpb_output_delay_du_length_minus1, 5); } WRITE_BITS (bw, hrd->bit_rate_scale, 4); WRITE_BITS (bw, hrd->cpb_size_scale, 4); if (hrd->sub_pic_hrd_params_present_flag) WRITE_BITS (bw, hrd->cpb_size_du_scale, 4); WRITE_BITS (bw, hrd->initial_cpb_removal_delay_length_minus1, 5); WRITE_BITS (bw, hrd->au_cpb_removal_delay_length_minus1, 5); WRITE_BITS (bw, hrd->dpb_output_delay_length_minus1, 5); } } for (i = 0; i <= maxNumSubLayersMinus1; i++) { WRITE_BITS (bw, hrd->fixed_pic_rate_general_flag[i], 1); if (!hrd->fixed_pic_rate_general_flag[i]) { WRITE_BITS (bw, hrd->fixed_pic_rate_within_cvs_flag[i], 1); } else { if (hrd->fixed_pic_rate_within_cvs_flag[i] == 0) goto error; } if (hrd->fixed_pic_rate_within_cvs_flag[i]) { WRITE_UE_MAX (bw, hrd->elemental_duration_in_tc_minus1[i], 2047); } else { WRITE_BITS (bw, hrd->low_delay_hrd_flag[i], 1); } if (!hrd->low_delay_hrd_flag[i]) WRITE_UE_MAX (bw, hrd->cpb_cnt_minus1[i], 31); if (hrd->nal_hrd_parameters_present_flag) if (!_h265_bit_writer_sub_layer_hrd_parameters (&hrd->sublayer_hrd_params[i], hrd->cpb_cnt_minus1[i], hrd->sub_pic_hrd_params_present_flag, bw, &have_space)) goto error; /* TODO: need to separate nal and vcl from hrd_parameters. */ if (hrd->vcl_hrd_parameters_present_flag) if (!_h265_bit_writer_sub_layer_hrd_parameters (&hrd->sublayer_hrd_params[i], hrd->cpb_cnt_minus1[i], hrd->sub_pic_hrd_params_present_flag, bw, &have_space)) goto error; } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"HRD Parameters\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_vps (const GstH265VPS * vps, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i, j; GST_DEBUG ("writing VPS"); WRITE_BITS (bw, vps->id, 4); WRITE_BITS (bw, vps->base_layer_internal_flag, 1); WRITE_BITS (bw, vps->base_layer_available_flag, 1); WRITE_BITS (bw, vps->max_layers_minus1, 6); WRITE_BITS (bw, vps->max_sub_layers_minus1, 3); WRITE_BITS (bw, vps->temporal_id_nesting_flag, 1); /* reserved_0xffff_16bits */ WRITE_BITS (bw, 0xffff, 16); if (!_h265_bit_writer_profile_tier_level (&vps->profile_tier_level, vps->max_sub_layers_minus1, bw, &have_space)) goto error; WRITE_BITS (bw, vps->sub_layer_ordering_info_present_flag, 1); for (i = (vps->sub_layer_ordering_info_present_flag ? 0 : vps->max_sub_layers_minus1); i <= vps->max_sub_layers_minus1; i++) { WRITE_UE (bw, vps->max_dec_pic_buffering_minus1[i]); WRITE_UE_MAX (bw, vps->max_num_reorder_pics[i], vps->max_dec_pic_buffering_minus1[i]); WRITE_UE_MAX (bw, vps->max_latency_increase_plus1[i], G_MAXUINT32 - 1); } /* max_layer_id should be <63, but only support 1 layer now. */ if (vps->max_layer_id > 1) { GST_WARNING ("multi layers are not supported now"); goto error; } WRITE_BITS (bw, vps->max_layer_id, 6); if (vps->num_layer_sets_minus1 >= 1) { GST_WARNING ("layer set is not supported now"); goto error; } WRITE_UE_MAX (bw, vps->num_layer_sets_minus1, 1023); /* TODO: support multi-layer. */ for (i = 1; i <= vps->num_layer_sets_minus1; i++) { for (j = 0; j <= vps->max_layer_id; j++) { /* layer_id_included_flag[i][j] */ WRITE_BITS (bw, 0, 1); } } WRITE_BITS (bw, vps->timing_info_present_flag, 1); if (vps->timing_info_present_flag) { WRITE_BITS (bw, vps->num_units_in_tick, 32); WRITE_BITS (bw, vps->time_scale, 32); WRITE_BITS (bw, vps->poc_proportional_to_timing_flag, 1); if (vps->poc_proportional_to_timing_flag) WRITE_UE_MAX (bw, vps->num_ticks_poc_diff_one_minus1, G_MAXUINT32 - 1); /* TODO: VPS can have multiple hrd parameters, and therefore hrd_params * should be an array (like Garray). Just support 1 hdr parameter now. */ if (vps->num_hrd_parameters > 1) { GST_WARNING ("HRD parameters > 1 is not supported now"); goto error; } WRITE_UE_MAX (bw, vps->num_hrd_parameters, vps->num_layer_sets_minus1 + 1); if (vps->num_hrd_parameters) { WRITE_UE_MAX (bw, vps->hrd_layer_set_idx, vps->num_layer_sets_minus1); if (!_h265_bit_writer_hrd_parameters (&vps->hrd_params, vps->cprms_present_flag, vps->max_sub_layers_minus1, bw, &have_space)) goto error; } } if (vps->vps_extension) { GST_WARNING ("vps extension is not supported now"); goto error; } WRITE_BITS (bw, 0, 1); *space = TRUE; return TRUE; error: GST_WARNING ("failed to write VPS"); *space = have_space; return FALSE; } /** * gst_h265_bit_writer_vps: * @vps: the vps of #GstH265VPS to write * @start_code: whether adding the nal start code * @data: (out): the bit stream generated by the sps * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream by providing the vps. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_vps (const GstH265VPS * vps, gboolean start_code, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; g_return_val_if_fail (vps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, GST_H265_NAL_VPS, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); if (!_h265_bit_writer_vps (vps, &bw, &have_space)) goto error; /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { have_space = FALSE; goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } static gboolean _get_scaling_list_params (const GstH265ScalingList * dest_scaling_list, guint8 sizeId, guint8 matrixId, const guint8 ** sl, guint8 * size, gint16 * scaling_list_dc_coef_minus8) { switch (sizeId) { case GST_H265_QUANT_MATIX_4X4: *sl = dest_scaling_list->scaling_lists_4x4[matrixId]; if (size) *size = 16; break; case GST_H265_QUANT_MATIX_8X8: *sl = dest_scaling_list->scaling_lists_8x8[matrixId]; if (size) *size = 64; break; case GST_H265_QUANT_MATIX_16X16: *sl = dest_scaling_list->scaling_lists_16x16[matrixId]; if (size) *size = 64; if (scaling_list_dc_coef_minus8) *scaling_list_dc_coef_minus8 = dest_scaling_list->scaling_list_dc_coef_minus8_16x16[matrixId]; break; case GST_H265_QUANT_MATIX_32X32: *sl = dest_scaling_list->scaling_lists_32x32[matrixId]; if (size) *size = 64; if (scaling_list_dc_coef_minus8) *scaling_list_dc_coef_minus8 = dest_scaling_list->scaling_list_dc_coef_minus8_32x32[matrixId]; break; default: g_assert_not_reached (); return FALSE; } return TRUE; } static const guint8 * _get_default_scaling_lists (GstH265QuantMatrixSize sizeId, guint8 matrixId) { const guint8 *sl; switch (sizeId) { case GST_H265_QUANT_MATIX_4X4: sl = default_scaling_list0; break; case GST_H265_QUANT_MATIX_8X8: case GST_H265_QUANT_MATIX_16X16: if (matrixId <= 2) { sl = default_scaling_list1; } else { sl = default_scaling_list2; } break; case GST_H265_QUANT_MATIX_32X32: if (matrixId == 0) { sl = default_scaling_list1; } else { sl = default_scaling_list2; } break; default: g_assert_not_reached (); return NULL; } return sl; } static gboolean _compare_scaling_list_matrix (GstH265QuantMatrixSize sizeId, const guint8 * sl0, const guint8 * sl1, gint16 dc_coef_minus8_0, gint16 dc_coef_minus8_1) { guint size = sizeId == GST_H265_QUANT_MATIX_4X4 ? 16 : 64; if (memcmp (sl0, sl1, size * sizeof (guint8))) return FALSE; if (sizeId <= GST_H265_QUANT_MATIX_8X8) return TRUE; return dc_coef_minus8_0 == dc_coef_minus8_1; } static gboolean _h265_bit_writer_scaling_lists (const GstH265ScalingList * src_scaling_list, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; GstH265QuantMatrixSize sizeId; guint8 matrixId; guint8 scaling_list_pred_mode_flag = 0; guint8 size, i, j; GST_DEBUG ("writing scaling lists"); for (sizeId = 0; sizeId <= GST_H265_QUANT_MATIX_32X32; sizeId++) { for (matrixId = 0; matrixId < ((sizeId == GST_H265_QUANT_MATIX_32X32) ? 2 : 6); matrixId++) { gint16 scaling_list_dc_coef_minus8 = 8; const guint8 *sl; const guint8 *default_sl; guint8 nextCoef; gint8 coef_val; guint8 scaling_list_pred_matrix_id_delta; if (!_get_scaling_list_params (src_scaling_list, sizeId, matrixId, &sl, &size, &scaling_list_dc_coef_minus8)) goto error; /* Check whether it is the default matrix. */ default_sl = _get_default_scaling_lists (sizeId, matrixId); if (_compare_scaling_list_matrix (sizeId, sl, default_sl, scaling_list_dc_coef_minus8, 8)) { scaling_list_pred_mode_flag = 0; WRITE_BITS (bw, scaling_list_pred_mode_flag, 1); scaling_list_pred_matrix_id_delta = 0; WRITE_UE_MAX (bw, scaling_list_pred_matrix_id_delta, matrixId); continue; } /* If some previous matrix is the same, just ref it. */ scaling_list_pred_matrix_id_delta = 0; for (j = 0; j < matrixId; j++) { gboolean ret; guint8 size2; const guint8 *sl2; gint16 scaling_list_dc_coef_minus8_2 = 8; ret = _get_scaling_list_params (src_scaling_list, sizeId, j, &sl2, &size2, &scaling_list_dc_coef_minus8_2); g_assert (ret); g_assert (size == size2); if (_compare_scaling_list_matrix (sizeId, sl, sl2, scaling_list_dc_coef_minus8, scaling_list_dc_coef_minus8_2)) { scaling_list_pred_matrix_id_delta = matrixId - j; break; } } if (scaling_list_pred_matrix_id_delta > 0) { scaling_list_pred_mode_flag = 0; WRITE_BITS (bw, scaling_list_pred_mode_flag, 1); WRITE_UE_MAX (bw, scaling_list_pred_matrix_id_delta, matrixId); continue; } /* Just explicitly signal all matrix coef. */ scaling_list_pred_mode_flag = 1; WRITE_BITS (bw, scaling_list_pred_mode_flag, 1); nextCoef = 8; if (sizeId > 1) { WRITE_SE_RANGE (bw, scaling_list_dc_coef_minus8, -7, 247); nextCoef = scaling_list_dc_coef_minus8 + 8; } for (i = 0; i < size; i++) { coef_val = sl[i] - nextCoef; nextCoef = sl[i]; if (coef_val > 127) { coef_val = coef_val - 256; } if (coef_val < -128) { coef_val = coef_val + 256; } WRITE_SE_RANGE (bw, coef_val, -128, 127); } } } *space = TRUE; return TRUE; error: GST_WARNING ("error to write scaling lists"); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_short_term_ref_pic_set (const GstH265ShortTermRefPicSet * stRPS, guint8 stRpsIdx, const GstH265SPS * sps, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; gint32 prev; gint i = 0; GST_DEBUG ("writing \"ShortTermRefPicSetParameter\""); if (stRPS->inter_ref_pic_set_prediction_flag) { /* TODO */ GST_WARNING ("inter_ref_pic_set_prediction_flag mode not supported"); goto error; } if (stRpsIdx != 0) WRITE_BITS (bw, stRPS->inter_ref_pic_set_prediction_flag, 1); if (stRPS->NumNegativePics + stRPS->NumPositivePics != stRPS->NumDeltaPocs) goto error; /* 7-49 */ WRITE_UE_MAX (bw, stRPS->NumNegativePics, sps->max_dec_pic_buffering_minus1[sps->max_sub_layers_minus1]); /* 7-50 */ WRITE_UE_MAX (bw, stRPS->NumPositivePics, (sps->max_dec_pic_buffering_minus1[sps->max_sub_layers_minus1] - stRPS->NumNegativePics)); prev = 0; for (i = 0; i < stRPS->NumNegativePics; i++) { WRITE_UE_MAX (bw, prev - stRPS->DeltaPocS0[i] - 1, 32767); prev = stRPS->DeltaPocS0[i]; /* 7-51 */ WRITE_BITS (bw, stRPS->UsedByCurrPicS0[i], 1); } prev = 0; for (i = 0; i < stRPS->NumPositivePics; i++) { WRITE_UE_MAX (bw, stRPS->DeltaPocS1[i] - prev - 1, 32767); prev = stRPS->DeltaPocS1[i]; /* 7-52 */ WRITE_BITS (bw, stRPS->UsedByCurrPicS1[i], 1); } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"ShortTermRefPicSet Parameters\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_vui_parameters (const GstH265SPS * sps, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; const GstH265VUIParams *vui = &sps->vui_params; GST_DEBUG ("writing \"VUI Parameters\""); WRITE_BITS (bw, vui->aspect_ratio_info_present_flag, 1); if (vui->aspect_ratio_info_present_flag) { WRITE_BITS (bw, vui->aspect_ratio_idc, 8); if (vui->aspect_ratio_idc == EXTENDED_SAR) { WRITE_BITS (bw, vui->sar_width, 16); WRITE_BITS (bw, vui->sar_height, 16); } } WRITE_BITS (bw, vui->overscan_info_present_flag, 1); if (vui->overscan_info_present_flag) WRITE_BITS (bw, vui->overscan_appropriate_flag, 1); WRITE_BITS (bw, vui->video_signal_type_present_flag, 1); if (vui->video_signal_type_present_flag) { WRITE_BITS (bw, vui->video_format, 3); WRITE_BITS (bw, vui->video_full_range_flag, 1); WRITE_BITS (bw, vui->colour_description_present_flag, 1); if (vui->colour_description_present_flag) { WRITE_BITS (bw, vui->colour_primaries, 8); WRITE_BITS (bw, vui->transfer_characteristics, 8); WRITE_BITS (bw, vui->matrix_coefficients, 8); } } WRITE_BITS (bw, vui->chroma_loc_info_present_flag, 1); if (vui->chroma_loc_info_present_flag) { WRITE_UE_MAX (bw, vui->chroma_sample_loc_type_top_field, 5); WRITE_UE_MAX (bw, vui->chroma_sample_loc_type_bottom_field, 5); } WRITE_BITS (bw, vui->neutral_chroma_indication_flag, 1); WRITE_BITS (bw, vui->field_seq_flag, 1); WRITE_BITS (bw, vui->frame_field_info_present_flag, 1); WRITE_BITS (bw, vui->default_display_window_flag, 1); if (vui->default_display_window_flag) { WRITE_UE (bw, vui->def_disp_win_left_offset); WRITE_UE (bw, vui->def_disp_win_right_offset); WRITE_UE (bw, vui->def_disp_win_top_offset); WRITE_UE (bw, vui->def_disp_win_bottom_offset); } WRITE_BITS (bw, vui->timing_info_present_flag, 1); if (vui->timing_info_present_flag) { if (vui->num_units_in_tick == 0) GST_WARNING ("num_units_in_tick = 0 (incompliant to H.265 E.2.1)."); WRITE_BITS (bw, vui->num_units_in_tick, 32); if (vui->time_scale == 0) GST_WARNING ("time_scale = 0 (incompliant to H.265 E.2.1)."); WRITE_BITS (bw, vui->time_scale, 32); WRITE_BITS (bw, vui->poc_proportional_to_timing_flag, 1); if (vui->poc_proportional_to_timing_flag) WRITE_UE_MAX (bw, vui->num_ticks_poc_diff_one_minus1, G_MAXUINT32 - 1); WRITE_BITS (bw, vui->hrd_parameters_present_flag, 1); if (vui->hrd_parameters_present_flag) if (!_h265_bit_writer_hrd_parameters (&vui->hrd_params, 1, sps->max_sub_layers_minus1, bw, &have_space)) goto error; } WRITE_BITS (bw, vui->bitstream_restriction_flag, 1); if (vui->bitstream_restriction_flag) { WRITE_BITS (bw, vui->tiles_fixed_structure_flag, 1); WRITE_BITS (bw, vui->motion_vectors_over_pic_boundaries_flag, 1); WRITE_BITS (bw, vui->restricted_ref_pic_lists_flag, 1); WRITE_UE_MAX (bw, vui->min_spatial_segmentation_idc, 4096); WRITE_UE_MAX (bw, vui->max_bytes_per_pic_denom, 16); WRITE_UE_MAX (bw, vui->max_bits_per_min_cu_denom, 16); WRITE_UE_MAX (bw, vui->log2_max_mv_length_horizontal, 16); WRITE_UE_MAX (bw, vui->log2_max_mv_length_vertical, 15); } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"VUI Parameters\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sps (const GstH265SPS * sps, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i; GST_DEBUG ("writing SPS"); WRITE_BITS (bw, sps->vps->id, 4); WRITE_BITS (bw, sps->max_sub_layers_minus1, 3); WRITE_BITS (bw, sps->temporal_id_nesting_flag, 1); if (!_h265_bit_writer_profile_tier_level (&sps->profile_tier_level, sps->max_sub_layers_minus1, bw, &have_space)) goto error; WRITE_UE_MAX (bw, sps->id, GST_H265_MAX_SPS_COUNT - 1); WRITE_UE_MAX (bw, sps->chroma_format_idc, 3); if (sps->chroma_format_idc == 3) WRITE_BITS (bw, sps->separate_colour_plane_flag, 1); if (sps->pic_width_in_luma_samples < 1) goto error; WRITE_UE_MAX (bw, sps->pic_width_in_luma_samples, 16888); if (sps->pic_height_in_luma_samples < 1) goto error; WRITE_UE_MAX (bw, sps->pic_height_in_luma_samples, 16888); WRITE_BITS (bw, sps->conformance_window_flag, 1); if (sps->conformance_window_flag) { WRITE_UE (bw, sps->conf_win_left_offset); WRITE_UE (bw, sps->conf_win_right_offset); WRITE_UE (bw, sps->conf_win_top_offset); WRITE_UE (bw, sps->conf_win_bottom_offset); } WRITE_UE_MAX (bw, sps->bit_depth_luma_minus8, 6); WRITE_UE_MAX (bw, sps->bit_depth_chroma_minus8, 6); WRITE_UE_MAX (bw, sps->log2_max_pic_order_cnt_lsb_minus4, 12); WRITE_BITS (bw, sps->sub_layer_ordering_info_present_flag, 1); for (i = (sps->sub_layer_ordering_info_present_flag ? 0 : sps->max_sub_layers_minus1); i <= sps->max_sub_layers_minus1; i++) { WRITE_UE_MAX (bw, sps->max_dec_pic_buffering_minus1[i], 16); WRITE_UE_MAX (bw, sps->max_num_reorder_pics[i], sps->max_dec_pic_buffering_minus1[i]); WRITE_UE (bw, sps->max_latency_increase_plus1[i]); } /* The limits are calculted based on the profile_tier_level constraint * in Annex-A: CtbLog2SizeY = 4 to 6 */ WRITE_UE_MAX (bw, sps->log2_min_luma_coding_block_size_minus3, 3); WRITE_UE_MAX (bw, sps->log2_diff_max_min_luma_coding_block_size, 6); WRITE_UE_MAX (bw, sps->log2_min_transform_block_size_minus2, 3); WRITE_UE_MAX (bw, sps->log2_diff_max_min_transform_block_size, 3); WRITE_UE_MAX (bw, sps->max_transform_hierarchy_depth_inter, 4); WRITE_UE_MAX (bw, sps->max_transform_hierarchy_depth_intra, 4); WRITE_BITS (bw, sps->scaling_list_enabled_flag, 1); if (sps->scaling_list_enabled_flag) { WRITE_BITS (bw, sps->scaling_list_data_present_flag, 1); if (sps->scaling_list_data_present_flag) if (!_h265_bit_writer_scaling_lists (&sps->scaling_list, bw, &have_space)) goto error; } WRITE_BITS (bw, sps->amp_enabled_flag, 1); WRITE_BITS (bw, sps->sample_adaptive_offset_enabled_flag, 1); WRITE_BITS (bw, sps->pcm_enabled_flag, 1); if (sps->pcm_enabled_flag) { WRITE_BITS (bw, sps->pcm_sample_bit_depth_luma_minus1, 4); WRITE_BITS (bw, sps->pcm_sample_bit_depth_chroma_minus1, 4); WRITE_UE_MAX (bw, sps->log2_min_pcm_luma_coding_block_size_minus3, 2); WRITE_UE_MAX (bw, sps->log2_diff_max_min_pcm_luma_coding_block_size, 2); WRITE_BITS (bw, sps->pcm_loop_filter_disabled_flag, 1); } WRITE_UE_MAX (bw, sps->num_short_term_ref_pic_sets, 64); for (i = 0; i < sps->num_short_term_ref_pic_sets; i++) { if (!_h265_bit_writer_short_term_ref_pic_set (&sps->short_term_ref_pic_set[i], i, sps, bw, &have_space)) goto error; } WRITE_BITS (bw, sps->long_term_ref_pics_present_flag, 1); if (sps->long_term_ref_pics_present_flag) { WRITE_UE_MAX (bw, sps->num_long_term_ref_pics_sps, 32); for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) { WRITE_BITS (bw, sps->lt_ref_pic_poc_lsb_sps[i], sps->log2_max_pic_order_cnt_lsb_minus4 + 4); WRITE_BITS (bw, sps->used_by_curr_pic_lt_sps_flag[i], 1); } } WRITE_BITS (bw, sps->temporal_mvp_enabled_flag, 1); WRITE_BITS (bw, sps->strong_intra_smoothing_enabled_flag, 1); WRITE_BITS (bw, sps->vui_parameters_present_flag, 1); if (sps->vui_parameters_present_flag) { if (!_h265_bit_writer_vui_parameters (sps, bw, &have_space)) goto error; } WRITE_BITS (bw, sps->sps_extension_flag, 1); if (sps->sps_extension_flag) { WRITE_BITS (bw, sps->sps_range_extension_flag, 1); WRITE_BITS (bw, sps->sps_multilayer_extension_flag, 1); WRITE_BITS (bw, sps->sps_3d_extension_flag, 1); WRITE_BITS (bw, sps->sps_scc_extension_flag, 1); WRITE_BITS (bw, sps->sps_extension_4bits, 4); } if (sps->sps_range_extension_flag) { WRITE_BITS (bw, sps->sps_extension_params.transform_skip_rotation_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.transform_skip_context_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.implicit_rdpcm_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.explicit_rdpcm_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.extended_precision_processing_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.intra_smoothing_disabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.high_precision_offsets_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.persistent_rice_adaptation_enabled_flag, 1); WRITE_BITS (bw, sps->sps_extension_params.cabac_bypass_alignment_enabled_flag, 1); } if (sps->sps_multilayer_extension_flag) { GST_WARNING ("do not support multilayer extension"); goto error; } if (sps->sps_3d_extension_flag) { GST_WARNING ("do not support 3d extension"); goto error; } if (sps->sps_scc_extension_flag) { const GstH265SPSSccExtensionParams *scc_params = &sps->sps_scc_extension_params; WRITE_BITS (bw, scc_params->sps_curr_pic_ref_enabled_flag, 1); WRITE_BITS (bw, scc_params->palette_mode_enabled_flag, 1); if (scc_params->palette_mode_enabled_flag) { WRITE_UE_MAX (bw, scc_params->palette_max_size, 64); WRITE_UE_MAX (bw, scc_params->delta_palette_max_predictor_size, 128 - scc_params->palette_max_size); WRITE_BITS (bw, scc_params->sps_palette_predictor_initializers_present_flag, 1); if (scc_params->sps_palette_predictor_initializers_present_flag) { guint comp; WRITE_UE_MAX (bw, scc_params->sps_num_palette_predictor_initializer_minus1, scc_params->palette_max_size + scc_params->delta_palette_max_predictor_size - 1); for (comp = 0; comp < (sps->chroma_format_idc == 0 ? 1 : 3); comp++) { guint num_bits; guint num = scc_params->sps_num_palette_predictor_initializer_minus1 + 1; num_bits = (comp == 0 ? sps->bit_depth_luma_minus8 + 8 : sps->bit_depth_chroma_minus8 + 8); for (i = 0; i < num; i++) WRITE_BITS (bw, scc_params->sps_palette_predictor_initializer[comp][i], num_bits); } } } WRITE_BITS (bw, scc_params->motion_vector_resolution_control_idc, 2); WRITE_BITS (bw, scc_params->intra_boundary_filtering_disabled_flag, 1); } *space = TRUE; return TRUE; error: GST_WARNING ("failed to write SPS"); *space = have_space; return FALSE; } /** * gst_h265_bit_writer_sps: * @sps: the sps of #GstH265SPS to write * @start_code: whether adding the nal start code * @data: (out): the bit stream generated by the sps * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream by providing the sps. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_sps (const GstH265SPS * sps, gboolean start_code, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; g_return_val_if_fail (sps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (sps->vps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, GST_H265_NAL_SPS, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); if (!_h265_bit_writer_sps (sps, &bw, &have_space)) goto error; /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { have_space = FALSE; goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } static gboolean _h265_bit_writer_pps (const GstH265PPS * pps, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; GST_DEBUG ("writing PPS"); WRITE_UE_MAX (bw, pps->id, GST_H265_MAX_PPS_COUNT - 1); WRITE_UE_MAX (bw, pps->sps->id, GST_H265_MAX_SPS_COUNT - 1); WRITE_BITS (bw, pps->dependent_slice_segments_enabled_flag, 1); WRITE_BITS (bw, pps->output_flag_present_flag, 1); WRITE_BITS (bw, pps->num_extra_slice_header_bits, 3); WRITE_BITS (bw, pps->sign_data_hiding_enabled_flag, 1); WRITE_BITS (bw, pps->cabac_init_present_flag, 1); WRITE_UE_MAX (bw, pps->num_ref_idx_l0_default_active_minus1, 14); WRITE_UE_MAX (bw, pps->num_ref_idx_l1_default_active_minus1, 14); WRITE_SE_RANGE (bw, pps->init_qp_minus26, -(26 + 6 * pps->sps->bit_depth_luma_minus8), 25); WRITE_BITS (bw, pps->constrained_intra_pred_flag, 1); WRITE_BITS (bw, pps->transform_skip_enabled_flag, 1); WRITE_BITS (bw, pps->cu_qp_delta_enabled_flag, 1); if (pps->cu_qp_delta_enabled_flag) WRITE_UE_MAX (bw, pps->diff_cu_qp_delta_depth, pps->sps->log2_diff_max_min_luma_coding_block_size); WRITE_SE_RANGE (bw, pps->cb_qp_offset, -12, 12); WRITE_SE_RANGE (bw, pps->cr_qp_offset, -12, 12); WRITE_BITS (bw, pps->slice_chroma_qp_offsets_present_flag, 1); WRITE_BITS (bw, pps->weighted_pred_flag, 1); WRITE_BITS (bw, pps->weighted_bipred_flag, 1); WRITE_BITS (bw, pps->transquant_bypass_enabled_flag, 1); WRITE_BITS (bw, pps->tiles_enabled_flag, 1); WRITE_BITS (bw, pps->entropy_coding_sync_enabled_flag, 1); if (pps->tiles_enabled_flag) { if (pps->num_tile_columns_minus1 + 1 > G_N_ELEMENTS (pps->column_width_minus1)) { GST_WARNING ("Invalid \"num_tile_columns_minus1\" %d", pps->num_tile_columns_minus1); goto error; } if (pps->num_tile_rows_minus1 + 1 > G_N_ELEMENTS (pps->row_height_minus1)) { GST_WARNING ("Invalid \"num_tile_rows_minus1\" %d", pps->num_tile_rows_minus1); goto error; } WRITE_UE_MAX (bw, pps->num_tile_columns_minus1, pps->PicWidthInCtbsY - 1); WRITE_UE_MAX (bw, pps->num_tile_rows_minus1, pps->PicHeightInCtbsY - 1); WRITE_BITS (bw, pps->uniform_spacing_flag, 1); /* 6.5.1, 6-4, 6-5, 7.4.3.3.1 */ if (!pps->uniform_spacing_flag) { guint i; for (i = 0; i < pps->num_tile_columns_minus1; i++) WRITE_UE (bw, pps->column_width_minus1[i]); for (i = 0; i < pps->num_tile_rows_minus1; i++) WRITE_UE (bw, pps->row_height_minus1[i]); } WRITE_BITS (bw, pps->loop_filter_across_tiles_enabled_flag, 1); } WRITE_BITS (bw, pps->loop_filter_across_slices_enabled_flag, 1); WRITE_BITS (bw, pps->deblocking_filter_control_present_flag, 1); if (pps->deblocking_filter_control_present_flag) { WRITE_BITS (bw, pps->deblocking_filter_override_enabled_flag, 1); WRITE_BITS (bw, pps->deblocking_filter_disabled_flag, 1); if (!pps->deblocking_filter_disabled_flag) { WRITE_SE_RANGE (bw, pps->beta_offset_div2, -6, 6); WRITE_SE_RANGE (bw, pps->tc_offset_div2, -6, +6); } } WRITE_BITS (bw, pps->scaling_list_data_present_flag, 1); if (pps->scaling_list_data_present_flag) if (!_h265_bit_writer_scaling_lists (&pps->scaling_list, bw, &have_space)) goto error; WRITE_BITS (bw, pps->lists_modification_present_flag, 1); WRITE_UE_MAX (bw, pps->log2_parallel_merge_level_minus2, 4); /* TODO: slice_segment_header */ if (pps->slice_segment_header_extension_present_flag) { GST_WARNING ("slice_segment_header_extension_present_flag is not supported"); goto error; } WRITE_BITS (bw, pps->slice_segment_header_extension_present_flag, 1); WRITE_BITS (bw, pps->pps_extension_flag, 1); if (pps->pps_extension_flag) { WRITE_BITS (bw, pps->pps_range_extension_flag, 1); WRITE_BITS (bw, pps->pps_multilayer_extension_flag, 1); WRITE_BITS (bw, pps->pps_3d_extension_flag, 1); WRITE_BITS (bw, pps->pps_scc_extension_flag, 1); WRITE_BITS (bw, pps->pps_extension_4bits, 4); } if (pps->pps_range_extension_flag) { guint i; guint32 MaxBitDepthY, MaxBitDepthC; if (pps->transform_skip_enabled_flag) WRITE_UE (bw, pps->pps_extension_params.log2_max_transform_skip_block_size_minus2); WRITE_BITS (bw, pps->pps_extension_params.cross_component_prediction_enabled_flag, 1); WRITE_BITS (bw, pps->pps_extension_params.chroma_qp_offset_list_enabled_flag, 1); if (pps->pps_extension_params.chroma_qp_offset_list_enabled_flag) { WRITE_UE_MAX (bw, pps->pps_extension_params.diff_cu_chroma_qp_offset_depth, pps->sps->log2_diff_max_min_luma_coding_block_size); WRITE_UE_MAX (bw, pps->pps_extension_params.chroma_qp_offset_list_len_minus1, 5); for (i = 0; i <= pps->pps_extension_params.chroma_qp_offset_list_len_minus1; i++) { WRITE_SE_RANGE (bw, pps->pps_extension_params.cb_qp_offset_list[i], -12, 12); WRITE_SE_RANGE (bw, pps->pps_extension_params.cr_qp_offset_list[i], -12, 12); } } MaxBitDepthY = pps->sps->bit_depth_luma_minus8 > 2 ? pps->sps->bit_depth_luma_minus8 - 2 : 0; MaxBitDepthC = pps->sps->bit_depth_chroma_minus8 > 2 ? pps->sps->bit_depth_chroma_minus8 - 2 : 0; WRITE_UE_MAX (bw, pps->pps_extension_params.log2_sao_offset_scale_luma, MaxBitDepthY); WRITE_UE_MAX (bw, pps->pps_extension_params.log2_sao_offset_scale_chroma, MaxBitDepthC); } if (pps->pps_multilayer_extension_flag) { GST_WARNING ("do not support multilayer extension"); goto error; } if (pps->pps_3d_extension_flag) { GST_WARNING ("do not support 3d extension"); goto error; } if (pps->pps_scc_extension_flag) { const GstH265PPSSccExtensionParams *pps_scc = &pps->pps_scc_extension_params; WRITE_BITS (bw, pps_scc->pps_curr_pic_ref_enabled_flag, 1); WRITE_BITS (bw, pps_scc->residual_adaptive_colour_transform_enabled_flag, 1); if (pps_scc->residual_adaptive_colour_transform_enabled_flag) { WRITE_BITS (bw, pps_scc->pps_slice_act_qp_offsets_present_flag, 1); WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_y_qp_offset_plus5, -7, 17); WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_cb_qp_offset_plus5, -7, 17); WRITE_SE_RANGE (bw, (gint8) pps_scc->pps_act_cr_qp_offset_plus3, -9, 15); } WRITE_BITS (bw, pps_scc->pps_palette_predictor_initializers_present_flag, 1); if (pps_scc->pps_palette_predictor_initializers_present_flag) { guint i; WRITE_UE_MAX (bw, pps_scc->pps_num_palette_predictor_initializer, pps->sps->sps_scc_extension_params.palette_max_size + pps->sps->sps_scc_extension_params.delta_palette_max_predictor_size); if (pps_scc->pps_num_palette_predictor_initializer > 0) { guint comp; WRITE_BITS (bw, pps_scc->monochrome_palette_flag, 1); /* It is a requirement of bitstream conformance that the value of luma_bit_depth_entry_minus8 shall be equal to the value of bit_depth_luma_minus8 */ WRITE_UE_MAX (bw, pps_scc->luma_bit_depth_entry_minus8, pps->sps->bit_depth_luma_minus8); if (!pps_scc->monochrome_palette_flag) { /* It is a requirement of bitstream conformance that the value of chroma_bit_depth_entry_minus8 shall be equal to the value of bit_depth_chroma_minus8. */ WRITE_UE_MAX (bw, pps_scc->chroma_bit_depth_entry_minus8, pps->sps->bit_depth_chroma_minus8); } for (comp = 0; comp < (pps_scc->monochrome_palette_flag ? 1 : 3); comp++) { guint num_bits; guint num = pps_scc->pps_num_palette_predictor_initializer; num_bits = (comp == 0 ? pps_scc->luma_bit_depth_entry_minus8 + 8 : pps_scc->chroma_bit_depth_entry_minus8 + 8); for (i = 0; i < num; i++) WRITE_BITS (bw, pps_scc->pps_palette_predictor_initializer[comp][i], num_bits); } } } } return TRUE; error: GST_WARNING ("failed to write PPS"); return FALSE; } /** * gst_h265_bit_writer_pps: * @pps: the pps of #GstH265PPS to write * @start_code: whether adding the nal start code * @data: (out): the bit stream generated by the pps * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream by providing the pps. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_pps (const GstH265PPS * pps, gboolean start_code, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; g_return_val_if_fail (pps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (pps->sps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, GST_H265_NAL_PPS, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); if (!_h265_bit_writer_pps (pps, &bw, &have_space)) goto error; /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { have_space = FALSE; goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } static gboolean _h265_slice_bit_writer_ref_pic_list_modification (const GstH265SliceHdr * slice, gint NumPocTotalCurr, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i; const GstH265RefPicListModification *rpl_mod = &slice->ref_pic_list_modification; const guint n = gst_util_ceil_log2 (NumPocTotalCurr); WRITE_BITS (bw, rpl_mod->ref_pic_list_modification_flag_l0, 1); if (rpl_mod->ref_pic_list_modification_flag_l0) { for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) { WRITE_BITS (bw, rpl_mod->list_entry_l0[i], n); } } if (GST_H265_IS_B_SLICE (slice)) { WRITE_BITS (bw, rpl_mod->ref_pic_list_modification_flag_l1, 1); if (rpl_mod->ref_pic_list_modification_flag_l1) for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) { WRITE_BITS (bw, rpl_mod->list_entry_l1[i], n); } } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"Reference picture list modifications\""); *space = have_space; return FALSE; } static gboolean _h265_slice_bit_writer_pred_weight_table (const GstH265SliceHdr * slice, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; const GstH265PredWeightTable *p; const GstH265PPS *pps = slice->pps; const GstH265SPS *sps = pps->sps; gint i, j; GST_DEBUG ("writing \"Prediction weight table\""); p = &slice->pred_weight_table; WRITE_UE_MAX (bw, p->luma_log2_weight_denom, 7); if (sps->chroma_format_idc != 0) { WRITE_SE_RANGE (bw, p->delta_chroma_log2_weight_denom, (0 - p->luma_log2_weight_denom), (7 - p->luma_log2_weight_denom)); } for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) WRITE_BITS (bw, p->luma_weight_l0_flag[i], 1); if (sps->chroma_format_idc != 0) for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) WRITE_BITS (bw, p->chroma_weight_l0_flag[i], 1); for (i = 0; i <= slice->num_ref_idx_l0_active_minus1; i++) { if (p->luma_weight_l0_flag[i]) { WRITE_SE_RANGE (bw, p->delta_luma_weight_l0[i], -128, 127); WRITE_SE_RANGE (bw, p->luma_offset_l0[i], -128, 127); } if (p->chroma_weight_l0_flag[i]) for (j = 0; j < 2; j++) { WRITE_SE_RANGE (bw, p->delta_chroma_weight_l0[i][j], -128, 127); WRITE_SE_RANGE (bw, p->delta_chroma_offset_l0[i][j], -512, 511); } } if (GST_H265_IS_B_SLICE (slice)) { for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) WRITE_BITS (bw, p->luma_weight_l1_flag[i], 1); if (sps->chroma_format_idc != 0) for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) WRITE_BITS (bw, p->chroma_weight_l1_flag[i], 1); for (i = 0; i <= slice->num_ref_idx_l1_active_minus1; i++) { if (p->luma_weight_l1_flag[i]) { WRITE_SE_RANGE (bw, p->delta_luma_weight_l1[i], -128, 127); WRITE_SE_RANGE (bw, p->luma_offset_l1[i], -128, 127); } if (p->chroma_weight_l1_flag[i]) for (j = 0; j < 2; j++) { WRITE_SE_RANGE (bw, p->delta_chroma_weight_l1[i][j], -128, 127); WRITE_SE_RANGE (bw, p->delta_chroma_offset_l1[i][j], -512, 511); } } } *space = TRUE; return TRUE; error: GST_WARNING ("error to write \"Prediction weight table\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_slice_header (const GstH265SliceHdr * slice, guint32 nal_type, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; guint i; const GstH265SPS *sps = slice->pps->sps; const GstH265PPSSccExtensionParams *pps_scc_extension_params = &slice->pps->pps_scc_extension_params; const GstH265PPSExtensionParams *pps_extension_params = &slice->pps->pps_extension_params; GST_DEBUG ("writing slice header"); WRITE_BITS (bw, slice->first_slice_segment_in_pic_flag, 1); if (GST_H265_IS_NAL_TYPE_IRAP (nal_type)) WRITE_BITS (bw, slice->no_output_of_prior_pics_flag, 1); WRITE_UE_MAX (bw, slice->pps->id, GST_H265_MAX_PPS_COUNT - 1); if (!slice->first_slice_segment_in_pic_flag) { guint32 PicSizeInCtbsY; guint32 PicWidthInCtbsY; guint32 PicHeightInCtbsY; guint32 CtbSizeY, MinCbLog2SizeY, CtbLog2SizeY; guint n; /* We can not directly use slice->pps->PicWidthInCtbsY/PicHeightInCtbsY, they are calculated value when parsing but may not have value here. */ MinCbLog2SizeY = sps->log2_min_luma_coding_block_size_minus3 + 3; CtbLog2SizeY = MinCbLog2SizeY + sps->log2_diff_max_min_luma_coding_block_size; CtbSizeY = 1 << CtbLog2SizeY; PicHeightInCtbsY = ceil ((gdouble) sps->pic_height_in_luma_samples / (gdouble) CtbSizeY); PicWidthInCtbsY = ceil ((gdouble) sps->pic_width_in_luma_samples / (gdouble) CtbSizeY); PicSizeInCtbsY = PicWidthInCtbsY * PicHeightInCtbsY; n = gst_util_ceil_log2 (PicSizeInCtbsY); if (slice->pps->dependent_slice_segments_enabled_flag) WRITE_BITS (bw, slice->dependent_slice_segment_flag, 1); /* sice_segment_address parsing */ WRITE_BITS (bw, slice->segment_address, n); } if (!slice->dependent_slice_segment_flag) { for (i = 0; i < slice->pps->num_extra_slice_header_bits; i++) { /* slice_reserved_flag */ WRITE_BITS (bw, 0, 1); } WRITE_UE_MAX (bw, slice->type, 63); if (slice->pps->output_flag_present_flag) WRITE_BITS (bw, slice->pic_output_flag, 1); if (sps->separate_colour_plane_flag == 1) WRITE_BITS (bw, slice->colour_plane_id, 2); if (!GST_H265_IS_NAL_TYPE_IDR (nal_type)) { WRITE_BITS (bw, slice->pic_order_cnt_lsb, (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)); WRITE_BITS (bw, slice->short_term_ref_pic_set_sps_flag, 1); if (!slice->short_term_ref_pic_set_sps_flag) { if (!_h265_bit_writer_short_term_ref_pic_set (&slice->short_term_ref_pic_sets, sps->num_short_term_ref_pic_sets, slice->pps->sps, bw, &have_space)) goto error; } else if (sps->num_short_term_ref_pic_sets > 1) { const guint n = gst_util_ceil_log2 (sps->num_short_term_ref_pic_sets); if (slice->short_term_ref_pic_set_idx > sps->num_short_term_ref_pic_sets - 1) goto error; WRITE_BITS (bw, slice->short_term_ref_pic_set_idx, n); } if (sps->long_term_ref_pics_present_flag) { guint32 limit; if (sps->num_long_term_ref_pics_sps > 0) WRITE_UE_MAX (bw, slice->num_long_term_sps, sps->num_long_term_ref_pics_sps); WRITE_UE_MAX (bw, slice->num_long_term_pics, 16); limit = slice->num_long_term_sps + slice->num_long_term_pics; for (i = 0; i < limit; i++) { if (i < slice->num_long_term_sps) { if (sps->num_long_term_ref_pics_sps > 1) { const guint n = gst_util_ceil_log2 (sps->num_long_term_ref_pics_sps); WRITE_BITS (bw, slice->lt_idx_sps[i], n); } } else { WRITE_BITS (bw, slice->poc_lsb_lt[i], (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)); WRITE_BITS (bw, slice->used_by_curr_pic_lt_flag[i], 1); } WRITE_BITS (bw, slice->delta_poc_msb_present_flag[i], 1); if (slice->delta_poc_msb_present_flag[i]) WRITE_UE (bw, slice->delta_poc_msb_cycle_lt[i]); } } if (sps->temporal_mvp_enabled_flag) WRITE_BITS (bw, slice->temporal_mvp_enabled_flag, 1); } if (sps->sample_adaptive_offset_enabled_flag) { gboolean ChromaArrayType = sps->separate_colour_plane_flag == 0 ? sps->chroma_format_idc : 0; WRITE_BITS (bw, slice->sao_luma_flag, 1); if (ChromaArrayType) WRITE_BITS (bw, slice->sao_chroma_flag, 1); } if (GST_H265_IS_B_SLICE (slice) || GST_H265_IS_P_SLICE (slice)) { WRITE_BITS (bw, slice->num_ref_idx_active_override_flag, 1); if (slice->num_ref_idx_active_override_flag) { WRITE_UE_MAX (bw, slice->num_ref_idx_l0_active_minus1, 14); if (GST_H265_IS_B_SLICE (slice)) WRITE_UE_MAX (bw, slice->num_ref_idx_l1_active_minus1, 14); } if (slice->pps->lists_modification_present_flag && slice->NumPocTotalCurr > 1) { if (!_h265_slice_bit_writer_ref_pic_list_modification (slice, slice->NumPocTotalCurr, bw, &have_space)) goto error; } if (GST_H265_IS_B_SLICE (slice)) WRITE_BITS (bw, slice->mvd_l1_zero_flag, 1); if (slice->pps->cabac_init_present_flag) WRITE_BITS (bw, slice->cabac_init_flag, 1); if (slice->temporal_mvp_enabled_flag) { if (GST_H265_IS_B_SLICE (slice)) WRITE_BITS (bw, slice->collocated_from_l0_flag, 1); if ((slice->collocated_from_l0_flag && slice->num_ref_idx_l0_active_minus1 > 0) || (!slice->collocated_from_l0_flag && slice->num_ref_idx_l1_active_minus1 > 0)) { if ((GST_H265_IS_P_SLICE (slice)) || ((GST_H265_IS_B_SLICE (slice)) && (slice->collocated_from_l0_flag))) { WRITE_UE_MAX (bw, slice->collocated_ref_idx, slice->num_ref_idx_l0_active_minus1); } else if ((GST_H265_IS_B_SLICE (slice)) && (!slice->collocated_from_l0_flag)) { WRITE_UE_MAX (bw, slice->collocated_ref_idx, slice->num_ref_idx_l1_active_minus1); } } } if ((slice->pps->weighted_pred_flag && GST_H265_IS_P_SLICE (slice)) || (slice->pps->weighted_bipred_flag && GST_H265_IS_B_SLICE (slice))) if (!_h265_slice_bit_writer_pred_weight_table (slice, bw, &have_space)) goto error; WRITE_UE_MAX (bw, slice->five_minus_max_num_merge_cand, 4); if (sps->sps_scc_extension_params.motion_vector_resolution_control_idc == 2) WRITE_BITS (bw, slice->use_integer_mv_flag, 1); } WRITE_SE_RANGE (bw, slice->qp_delta, -87, 77); if (slice->pps->slice_chroma_qp_offsets_present_flag) { WRITE_SE_RANGE (bw, slice->cb_qp_offset, -12, 12); WRITE_SE_RANGE (bw, slice->cr_qp_offset, -12, 12); } if (pps_scc_extension_params->pps_slice_act_qp_offsets_present_flag) { WRITE_SE_RANGE (bw, slice->slice_act_y_qp_offset, -12, 12); WRITE_SE_RANGE (bw, slice->slice_act_cb_qp_offset, -12, 12); WRITE_SE_RANGE (bw, slice->slice_act_cr_qp_offset, -12, 12); } if (pps_extension_params->chroma_qp_offset_list_enabled_flag) WRITE_BITS (bw, slice->cu_chroma_qp_offset_enabled_flag, 1); if (slice->pps->deblocking_filter_override_enabled_flag) WRITE_BITS (bw, slice->deblocking_filter_override_flag, 1); if (slice->deblocking_filter_override_flag) { WRITE_BITS (bw, slice->deblocking_filter_disabled_flag, 1); if (!slice->deblocking_filter_disabled_flag) { WRITE_SE_RANGE (bw, slice->beta_offset_div2, -6, 6); WRITE_SE_RANGE (bw, slice->tc_offset_div2, -6, 6); } } if (slice->pps->loop_filter_across_slices_enabled_flag && (slice->sao_luma_flag || slice->sao_chroma_flag || !slice->deblocking_filter_disabled_flag)) WRITE_BITS (bw, slice->loop_filter_across_slices_enabled_flag, 1); } if (slice->pps->tiles_enabled_flag || slice->pps->entropy_coding_sync_enabled_flag) { guint32 offset_max; if (!slice->pps->tiles_enabled_flag && slice->pps->entropy_coding_sync_enabled_flag) { offset_max = slice->pps->PicHeightInCtbsY - 1; } else if (slice->pps->tiles_enabled_flag && !slice->pps->entropy_coding_sync_enabled_flag) { offset_max = (slice->pps->num_tile_columns_minus1 + 1) * (slice->pps->num_tile_rows_minus1 + 1) - 1; } else { offset_max = (slice->pps->num_tile_columns_minus1 + 1) * slice->pps->PicHeightInCtbsY - 1; } WRITE_UE_MAX (bw, slice->num_entry_point_offsets, offset_max); if (slice->num_entry_point_offsets > 0) { WRITE_UE_MAX (bw, slice->offset_len_minus1, 31); for (i = 0; i < slice->num_entry_point_offsets; i++) WRITE_BITS (bw, slice->entry_point_offset_minus1[i], (slice->offset_len_minus1 + 1)); } } /* TODO */ if (slice->pps->slice_segment_header_extension_present_flag) { GST_WARNING ("slice_segment_header_extension_present_flag is not supported"); goto error; } *space = TRUE; return TRUE; error: GST_WARNING ("error to write slice header"); *space = have_space; return FALSE; } /** * gst_h265_bit_writer_slice_hdr: * @slice: the slice header of #GstH265SliceHdr to write * @start_code: whether adding the nal start code * @nal_type: the slice's nal type of #GstH265NalUnitType * @data: (out): the bit stream generated by the slice header * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream by providing the slice header. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_slice_hdr (const GstH265SliceHdr * slice, gboolean start_code, guint32 nal_type, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; g_return_val_if_fail (slice != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (slice->pps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (slice->pps->sps != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (nal_type <= GST_H265_NAL_SLICE_CRA_NUT, GST_H265_BIT_WRITER_ERROR); gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, nal_type, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); if (!_h265_bit_writer_slice_header (slice, nal_type, &bw, &have_space)) goto error; /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { have_space = FALSE; goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } static gboolean _h265_bit_writer_sei_registered_user_data (const GstH265RegisteredUserData * rud, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; GST_DEBUG ("Writing \"Registered user data\""); WRITE_BITS (bw, rud->country_code, 8); if (rud->country_code == 0xff) WRITE_BITS (bw, rud->country_code_extension, 8); WRITE_BYTES (bw, rud->data, rud->size); *space = TRUE; return TRUE; error: GST_DEBUG ("Failed to write \"Registered user data\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sei_time_code (const GstH265TimeCode * tc, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; gint i; GST_DEBUG ("Wrtiting \"Time code\""); WRITE_BITS (bw, tc->num_clock_ts, 2); for (i = 0; i < tc->num_clock_ts; i++) { WRITE_BITS (bw, tc->clock_timestamp_flag[i], 1); if (tc->clock_timestamp_flag[i]) { WRITE_BITS (bw, tc->units_field_based_flag[i], 1); WRITE_BITS (bw, tc->counting_type[i], 5); WRITE_BITS (bw, tc->full_timestamp_flag[i], 1); WRITE_BITS (bw, tc->discontinuity_flag[i], 1); WRITE_BITS (bw, tc->cnt_dropped_flag[i], 1); WRITE_BITS (bw, tc->n_frames[i], 9); if (tc->full_timestamp_flag[i]) { WRITE_BITS (bw, tc->seconds_value[i], 6); WRITE_BITS (bw, tc->minutes_value[i], 6); WRITE_BITS (bw, tc->hours_value[i], 5); } else { WRITE_BITS (bw, tc->seconds_flag[i], 1); if (tc->seconds_flag[i]) { WRITE_BITS (bw, tc->seconds_value[i], 6); WRITE_BITS (bw, tc->minutes_flag[i], 1); if (tc->minutes_flag[i]) { WRITE_BITS (bw, tc->minutes_value[i], 6); WRITE_BITS (bw, tc->hours_flag[i], 1); if (tc->hours_flag[i]) { WRITE_BITS (bw, tc->hours_value[i], 5); } } } } } WRITE_BITS (bw, tc->time_offset_length[i], 5); if (tc->time_offset_length[i] > 0) WRITE_BITS (bw, tc->time_offset_value[i], tc->time_offset_length[i]); } *space = TRUE; return TRUE; error: GST_WARNING ("Failed to write \"Time code\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sei_mastering_display_colour_volume (const GstH265MasteringDisplayColourVolume * mdcv, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; gint i; GST_DEBUG ("Wrtiting \"Mastering display colour volume\""); for (i = 0; i < 3; i++) { WRITE_BITS (bw, mdcv->display_primaries_x[i], 16); WRITE_BITS (bw, mdcv->display_primaries_y[i], 16); } WRITE_BITS (bw, mdcv->white_point_x, 16); WRITE_BITS (bw, mdcv->white_point_y, 16); WRITE_BITS (bw, mdcv->max_display_mastering_luminance, 32); WRITE_BITS (bw, mdcv->min_display_mastering_luminance, 32); *space = TRUE; return TRUE; error: GST_WARNING ("Failed to write \"Mastering display colour volume\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sei_content_light_level_info (const GstH265ContentLightLevel * cll, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; GST_DEBUG ("Writing \"Content light level\""); WRITE_BITS (bw, cll->max_content_light_level, 16); WRITE_BITS (bw, cll->max_pic_average_light_level, 16); *space = TRUE; return TRUE; error: GST_WARNING ("Failed to write \"Content light level\""); *space = have_space; return FALSE; } static gboolean _h265_bit_writer_sei_message (const GstH265SEIMessage * msg, GstBitWriter * bw, gboolean * space) { gboolean have_space = TRUE; GST_DEBUG ("writing SEI message"); switch (msg->payloadType) { case GST_H265_SEI_REGISTERED_USER_DATA: if (!_h265_bit_writer_sei_registered_user_data (&msg->payload.registered_user_data, bw, &have_space)) goto error; break; case GST_H265_SEI_TIME_CODE: if (!_h265_bit_writer_sei_time_code (&msg->payload.time_code, bw, &have_space)) goto error; break; case GST_H265_SEI_MASTERING_DISPLAY_COLOUR_VOLUME: if (!_h265_bit_writer_sei_mastering_display_colour_volume (&msg->payload.mastering_display_colour_volume, bw, &have_space)) goto error; break; case GST_H265_SEI_CONTENT_LIGHT_LEVEL: if (!_h265_bit_writer_sei_content_light_level_info (&msg->payload.content_light_level, bw, &have_space)) goto error; break; default: break; } /* Add trailings. */ WRITE_BITS (bw, 1, 1); gst_bit_writer_align_bytes_unchecked (bw, 0); *space = TRUE; return TRUE; error: GST_WARNING ("error to write SEI message"); *space = have_space; return FALSE; } /** * gst_h265_bit_writer_sei: * @sei_messages: An array of #GstH265SEIMessage to write * @start_code: whether adding the nal start code * @data: (out): the bit stream generated by the sei messages * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream by providing sei messages. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_sei (GArray * sei_messages, GstH265NalUnitType nal_type, gboolean start_code, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; GstH265SEIMessage *sei; gboolean have_written_data = FALSE; guint i; g_return_val_if_fail (sei_messages != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (nal_type == GST_H265_NAL_PREFIX_SEI || nal_type == GST_H265_NAL_SUFFIX_SEI, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); if (nal_type == GST_H265_NAL_PREFIX_SEI) { GST_WARNING ("prefix sei is not supported"); return GST_H265_BIT_WRITER_ERROR; } gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, nal_type, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); for (i = 0; i < sei_messages->len; i++) { guint32 payload_size_data; guint32 payload_type_data; gst_bit_writer_init (&bw); sei = &g_array_index (sei_messages, GstH265SEIMessage, i); if (!_h265_bit_writer_sei_message (sei, &bw, &have_space)) goto error; if (gst_bit_writer_get_size (&bw) == 0) { GST_FIXME ("Unsupported SEI type %d", sei->payloadType); continue; } have_written_data = TRUE; g_assert (gst_bit_writer_get_size (&bw) % 8 == 0); payload_size_data = (gst_bit_writer_get_size (&bw) + 7) / 8; payload_type_data = sei->payloadType; /* write payload type bytes */ while (payload_type_data >= 0xff) { WRITE_BITS (&bw, 0xff, 8); payload_type_data -= -0xff; } WRITE_BITS (&bw, payload_type_data, 8); /* write payload size bytes */ while (payload_size_data >= 0xff) { WRITE_BITS (&bw, 0xff, 8); payload_size_data -= -0xff; } WRITE_BITS (&bw, payload_size_data, 8); if (gst_bit_writer_get_size (&bw) / 8) WRITE_BYTES (&bw, gst_bit_writer_get_data (&bw), gst_bit_writer_get_size (&bw) / 8); gst_bit_writer_reset (&bw); } if (!have_written_data) { GST_WARNING ("No written sei data"); goto error; } /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { have_space = FALSE; goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } /** * gst_h265_bit_writer_aud: * @pic_type: indicate the possible slice types list just * as the H265 spec Table 7-2 defines * @start_code: whether adding the nal start code * @data: (out): the bit stream generated by the aud * @size: (inout): the size in bytes of the input and output * * Generating the according h265 bit stream of an aud. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_aud (guint8 pic_type, gboolean start_code, guint8 * data, guint * size) { gboolean have_space = TRUE; GstBitWriter bw; g_return_val_if_fail (pic_type <= 2, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*size > 0, GST_H265_BIT_WRITER_ERROR); gst_bit_writer_init_with_data (&bw, data, *size, FALSE); if (start_code) WRITE_BITS (&bw, 0x00000001, 32); /* NAL unit header */ /* forbidden_zero_bit */ WRITE_BITS (&bw, 0, 1); /* nal_unit_type */ WRITE_BITS (&bw, GST_H265_NAL_AUD, 6); /* nuh_layer_id, only support 0 now */ WRITE_BITS (&bw, 0, 6); /* nuh_temporal_id_plus1, only support 1 now */ WRITE_BITS (&bw, 1, 3); WRITE_BITS (&bw, pic_type, 3); /* Add trailings. */ WRITE_BITS (&bw, 1, 1); if (!gst_bit_writer_align_bytes (&bw, 0)) { goto error; } *size = gst_bit_writer_get_size (&bw) / 8; gst_bit_writer_reset (&bw); return GST_H265_BIT_WRITER_OK; error: gst_bit_writer_reset (&bw); *size = 0; if (!have_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; } /** * gst_h265_bit_writer_convert_to_nal: * @nal_prefix_size: the size in bytes for the prefix of a nal, may * be 2, 3 or 4 * @packetized: whether to write the bit stream in packetized format, * which does not have the start code but has a @nal_prefix_size bytes' * size prepending to the real nal data * @has_startcode: whether the input already has a start code * @add_trailings: whether to add rbsp trailing bits to make the output * aligned to byte * @raw_data: the input bit stream * @raw_size: the size in bits of the input bit stream * @nal_data: (out): the output bit stream converted to a real nal * @nal_size: (inout): the size in bytes of the output * * Converting a bit stream into a real nal packet. If the bit stream already * has a start code, it will be replaced by the new one specified by the * @nal_prefix_size and @packetized. It is assured that the output aligns to * the byte and the all the emulations are inserted. * * Returns: a #GstH265BitWriterResult * * Since: 1.22 **/ GstH265BitWriterResult gst_h265_bit_writer_convert_to_nal (guint nal_prefix_size, gboolean packetized, gboolean has_startcode, gboolean add_trailings, const guint8 * raw_data, gsize raw_size, guint8 * nal_data, guint * nal_size) { NalWriter nw; guint8 *data; guint32 size = 0; gboolean need_more_space = FALSE; g_return_val_if_fail ( (packetized && nal_prefix_size > 1 && nal_prefix_size < 5) || (!packetized && (nal_prefix_size == 3 || nal_prefix_size == 4)), GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (raw_data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (raw_size > 0, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (nal_data != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (nal_size != NULL, GST_H265_BIT_WRITER_ERROR); g_return_val_if_fail (*nal_size > 0, GST_H265_BIT_WRITER_ERROR); if (has_startcode) { /* Skip the start code, the NalWriter will add it automatically. */ if (raw_size >= 4 && raw_data[0] == 0 && raw_data[1] == 0 && raw_data[2] == 0 && raw_data[3] == 0x01) { raw_data += 4; raw_size -= 4 * 8; } else if (raw_size >= 3 && raw_data[0] == 0 && raw_data[1] == 0 && raw_data[2] == 0x01) { raw_data += 3; raw_size -= 3 * 8; } else { /* Fail to find the start code. */ g_return_val_if_reached (GST_H265_BIT_WRITER_ERROR); } } /* If no RBSP trailing needed, it must align to byte. We assume that the rbsp trailing bits are already added. */ if (!add_trailings) g_return_val_if_fail (raw_size % 8 == 0, GST_H265_BIT_WRITER_ERROR); nal_writer_init (&nw, nal_prefix_size, packetized); if (!nal_writer_put_bytes (&nw, raw_data, raw_size / 8)) goto error; if (raw_size % 8) { guint8 data = *(raw_data + raw_size / 8); if (!nal_writer_put_bits_uint8 (&nw, data >> (8 - raw_size % 8), raw_size % 8)) goto error; } if (add_trailings) { if (!nal_writer_do_rbsp_trailing_bits (&nw)) goto error; } data = nal_writer_reset_and_get_data (&nw, &size); if (!data) goto error; if (size > *nal_size) { need_more_space = TRUE; g_free (data); goto error; } memcpy (nal_data, data, size); *nal_size = size; g_free (data); nal_writer_reset (&nw); return GST_H265_BIT_WRITER_OK; error: nal_writer_reset (&nw); *nal_size = 0; GST_WARNING ("Failed to convert nal data"); if (need_more_space) return GST_H265_BIT_WRITER_NO_MORE_SPACE; return GST_H265_BIT_WRITER_INVALID_DATA; }