From b4c915f4b3e15c3e787e319b961e4389762f6309 Mon Sep 17 00:00:00 2001 From: Mark Thompson Date: Sun, 14 May 2017 16:18:25 +0100 Subject: lavc: Add coded bitstream read/write support for H.264 (cherry picked from commit acf06f45441be24c5cbae0920579cd69427326a1) (cherry picked from commit 768eb9182e94a94bc2ef46f565a0dac7afef3b57) (cherry picked from commit e7f64191b27bcf37cbf7006606f0f439c6cdc24f) --- libavcodec/cbs_h264_syntax_template.c | 1230 +++++++++++++++++++++++++++++++++ 1 file changed, 1230 insertions(+) create mode 100644 libavcodec/cbs_h264_syntax_template.c (limited to 'libavcodec/cbs_h264_syntax_template.c') diff --git a/libavcodec/cbs_h264_syntax_template.c b/libavcodec/cbs_h264_syntax_template.c new file mode 100644 index 0000000000..8303acbdc4 --- /dev/null +++ b/libavcodec/cbs_h264_syntax_template.c @@ -0,0 +1,1230 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw) +{ + int err; + av_unused int one = 1, zero = 0; + xu(1, rbsp_stop_one_bit, one, 1, 1); + while (byte_alignment(rw) != 0) + xu(1, rbsp_alignment_zero_bit, zero, 0, 0); + + return 0; +} + +static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawNALUnitHeader *current, + uint32_t valid_type_mask) +{ + int err; + + u(1, forbidden_zero_bit, 0, 0); + u(2, nal_ref_idc, 0, 3); + u(5, nal_unit_type, 0, 31); + + if (!(1 << current->nal_unit_type & valid_type_mask)) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid NAL unit type %d.\n", + current->nal_unit_type); + return AVERROR_INVALIDDATA; + } + + if (current->nal_unit_type == 14 || + current->nal_unit_type == 20 || + current->nal_unit_type == 21) { + if (current->nal_unit_type != 21) + flag(svc_extension_flag); + else + flag(avc_3d_extension_flag); + + if (current->svc_extension_flag) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "SVC not supported.\n"); + return AVERROR_PATCHWELCOME; + + } else if (current->avc_3d_extension_flag) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "3DAVC not supported.\n"); + return AVERROR_PATCHWELCOME; + + } else { + av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC not supported.\n"); + return AVERROR_PATCHWELCOME; + } + } + + return 0; +} + +static int FUNC(scaling_list)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawScalingList *current, + int size_of_scaling_list) +{ + int err, i, scale; + + scale = 8; + for (i = 0; i < size_of_scaling_list; i++) { + xse(delta_scale, current->delta_scale[i], -128, +127); + scale = (scale + current->delta_scale[i] + 256) % 256; + if (scale == 0) + break; + } + + return 0; +} + +static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawHRD *current) +{ + int err, i; + + ue(cpb_cnt_minus1, 0, 31); + u(4, bit_rate_scale, 0, 15); + u(4, cpb_size_scale, 0, 15); + + for (i = 0; i <= current->cpb_cnt_minus1; i++) { + ue(bit_rate_value_minus1[i], 0, UINT32_MAX - 1); + ue(cpb_size_value_minus1[i], 0, UINT32_MAX - 1); + flag(cbr_flag[i]); + } + + u(5, initial_cpb_removal_delay_length_minus1, 0, 31); + u(5, cpb_removal_delay_length_minus1, 0, 31); + u(5, dpb_output_delay_length_minus1, 0, 31); + u(5, time_offset_length, 0, 31); + + return 0; +} + +static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawVUI *current, H264RawSPS *sps) +{ + int err; + + flag(aspect_ratio_info_present_flag); + if (current->aspect_ratio_info_present_flag) { + u(8, aspect_ratio_idc, 0, 255); + if (current->aspect_ratio_idc == 255) { + u(16, sar_width, 0, 65535); + u(16, sar_height, 0, 65535); + } + } else { + infer(aspect_ratio_idc, 0); + } + + flag(overscan_info_present_flag); + if (current->overscan_info_present_flag) + flag(overscan_appropriate_flag); + + flag(video_signal_type_present_flag); + if (current->video_signal_type_present_flag) { + u(3, video_format, 0, 7); + flag(video_full_range_flag); + flag(colour_description_present_flag); + if (current->colour_description_present_flag) { + u(8, colour_primaries, 0, 255); + u(8, transfer_characteristics, 0, 255); + u(8, matrix_coefficients, 0, 255); + } + } else { + infer(video_format, 5); + infer(video_full_range_flag, 0); + infer(colour_primaries, 2); + infer(transfer_characteristics, 2); + infer(matrix_coefficients, 2); + } + + flag(chroma_loc_info_present_flag); + if (current->chroma_loc_info_present_flag) { + ue(chroma_sample_loc_type_top_field, 0, 5); + ue(chroma_sample_loc_type_bottom_field, 0, 5); + } else { + infer(chroma_sample_loc_type_top_field, 0); + infer(chroma_sample_loc_type_bottom_field, 0); + } + + flag(timing_info_present_flag); + if (current->timing_info_present_flag) { + u(32, num_units_in_tick, 1, UINT32_MAX); + u(32, time_scale, 1, UINT32_MAX); + flag(fixed_frame_rate_flag); + } else { + infer(fixed_frame_rate_flag, 0); + } + + flag(nal_hrd_parameters_present_flag); + if (current->nal_hrd_parameters_present_flag) + CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->nal_hrd_parameters)); + + flag(vcl_hrd_parameters_present_flag); + if (current->vcl_hrd_parameters_present_flag) + CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->vcl_hrd_parameters)); + + if (current->nal_hrd_parameters_present_flag || + current->vcl_hrd_parameters_present_flag) + flag(low_delay_hrd_flag); + else + infer(low_delay_hrd_flag, 1 - current->fixed_frame_rate_flag); + + flag(pic_struct_present_flag); + + flag(bitstream_restriction_flag); + if (current->bitstream_restriction_flag) { + flag(motion_vectors_over_pic_boundaries_flag); + ue(max_bytes_per_pic_denom, 0, 16); + ue(max_bits_per_mb_denom, 0, 16); + ue(log2_max_mv_length_horizontal, 0, 16); + ue(log2_max_mv_length_vertical, 0, 16); + ue(max_num_reorder_frames, 0, H264_MAX_DPB_FRAMES); + ue(max_dec_frame_buffering, 0, H264_MAX_DPB_FRAMES); + } else { + infer(motion_vectors_over_pic_boundaries_flag, 1); + infer(max_bytes_per_pic_denom, 2); + infer(max_bits_per_mb_denom, 1); + infer(log2_max_mv_length_horizontal, 16); + infer(log2_max_mv_length_vertical, 16); + + if ((sps->profile_idc == 44 || sps->profile_idc == 86 || + sps->profile_idc == 110 || sps->profile_idc == 110 || + sps->profile_idc == 122 || sps->profile_idc == 244) && + sps->constraint_set3_flag) { + infer(max_num_reorder_frames, 0); + infer(max_dec_frame_buffering, 0); + } else { + infer(max_num_reorder_frames, H264_MAX_DPB_FRAMES); + infer(max_dec_frame_buffering, H264_MAX_DPB_FRAMES); + } + } + + return 0; +} + +static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSPS *current) +{ + int err, i; + + HEADER("Sequence Parameter Set"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_SPS)); + + u(8, profile_idc, 0, 255); + + flag(constraint_set0_flag); + flag(constraint_set1_flag); + flag(constraint_set2_flag); + flag(constraint_set3_flag); + flag(constraint_set4_flag); + flag(constraint_set5_flag); + + u(2, reserved_zero_2bits, 0, 0); + + u(8, level_idc, 0, 255); + + ue(seq_parameter_set_id, 0, 31); + + if (current->profile_idc == 100 || current->profile_idc == 110 || + current->profile_idc == 122 || current->profile_idc == 244 || + current->profile_idc == 44 || current->profile_idc == 83 || + current->profile_idc == 86 || current->profile_idc == 118 || + current->profile_idc == 128 || current->profile_idc == 138) { + ue(chroma_format_idc, 0, 3); + + if (current->chroma_format_idc == 3) + flag(separate_colour_plane_flag); + else + infer(separate_colour_plane_flag, 0); + + ue(bit_depth_luma_minus8, 0, 6); + ue(bit_depth_chroma_minus8, 0, 6); + + flag(qpprime_y_zero_transform_bypass_flag); + + flag(seq_scaling_matrix_present_flag); + if (current->seq_scaling_matrix_present_flag) { + for (i = 0; i < ((current->chroma_format_idc != 3) ? 8 : 12); i++) { + flag(seq_scaling_list_present_flag[i]); + if (current->seq_scaling_list_present_flag[i]) { + if (i < 6) + CHECK(FUNC(scaling_list)(ctx, rw, + ¤t->scaling_list_4x4[i], + 16)); + else + CHECK(FUNC(scaling_list)(ctx, rw, + ¤t->scaling_list_8x8[i - 6], + 64)); + } + } + } + } else { + infer(chroma_format_idc, current->profile_idc == 183 ? 0 : 1); + + infer(separate_colour_plane_flag, 0); + infer(bit_depth_luma_minus8, 0); + infer(bit_depth_chroma_minus8, 0); + } + + ue(log2_max_frame_num_minus4, 0, 12); + ue(pic_order_cnt_type, 0, 2); + + if (current->pic_order_cnt_type == 0) { + ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12); + } else if (current->pic_order_cnt_type == 1) { + flag(delta_pic_order_always_zero_flag); + se(offset_for_non_ref_pic, INT32_MIN + 1, INT32_MAX); + se(offset_for_top_to_bottom_field, INT32_MIN + 1, INT32_MAX); + ue(num_ref_frames_in_pic_order_cnt_cycle, 0, 255); + + for (i = 0; i < current->num_ref_frames_in_pic_order_cnt_cycle; i++) + se(offset_for_ref_frame[i], INT32_MIN + 1, INT32_MAX); + } + + ue(max_num_ref_frames, 0, H264_MAX_DPB_FRAMES); + flag(gaps_in_frame_num_allowed_flag); + + ue(pic_width_in_mbs_minus1, 0, H264_MAX_MB_WIDTH); + ue(pic_height_in_map_units_minus1, 0, H264_MAX_MB_HEIGHT); + + flag(frame_mbs_only_flag); + if (!current->frame_mbs_only_flag) + flag(mb_adaptive_frame_field_flag); + + flag(direct_8x8_inference_flag); + + flag(frame_cropping_flag); + if (current->frame_cropping_flag) { + ue(frame_crop_left_offset, 0, H264_MAX_WIDTH); + ue(frame_crop_right_offset, 0, H264_MAX_WIDTH); + ue(frame_crop_top_offset, 0, H264_MAX_HEIGHT); + ue(frame_crop_bottom_offset, 0, H264_MAX_HEIGHT); + } + + flag(vui_parameters_present_flag); + if (current->vui_parameters_present_flag) + CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current)); + + CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); + + return 0; +} + +static int FUNC(sps_extension)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSPSExtension *current) +{ + int err; + + HEADER("Sequence Parameter Set Extension"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_SPS_EXT)); + + ue(seq_parameter_set_id, 0, 31); + + ue(aux_format_idc, 0, 3); + + if (current->aux_format_idc != 0) { + int bits; + + ue(bit_depth_aux_minus8, 0, 4); + flag(alpha_incr_flag); + + bits = current->bit_depth_aux_minus8 + 9; + u(bits, alpha_opaque_value, 0, (1 << bits) - 1); + u(bits, alpha_transparent_value, 0, (1 << bits) - 1); + } + + flag(additional_extension_flag); + + CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); + + return 0; +} + +static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawPPS *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps; + int err, i; + + HEADER("Picture Parameter Set"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_PPS)); + + ue(pic_parameter_set_id, 0, 255); + ue(seq_parameter_set_id, 0, 31); + + sps = h264->sps[current->seq_parameter_set_id]; + if (!sps) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", + current->seq_parameter_set_id); + return AVERROR_INVALIDDATA; + } + + flag(entropy_coding_mode_flag); + flag(bottom_field_pic_order_in_frame_present_flag); + + ue(num_slice_groups_minus1, 0, 7); + if (current->num_slice_groups_minus1 > 0) { + unsigned int pic_size; + int iGroup; + + pic_size = (sps->pic_width_in_mbs_minus1 + 1) * + (sps->pic_height_in_map_units_minus1 + 1); + + ue(slice_group_map_type, 0, 6); + + if (current->slice_group_map_type == 0) { + for (iGroup = 0; iGroup <= current->num_slice_groups_minus1; iGroup++) + ue(run_length_minus1[iGroup], 0, pic_size - 1); + + } else if (current->slice_group_map_type == 2) { + for (iGroup = 0; iGroup < current->num_slice_groups_minus1; iGroup++) { + ue(top_left[iGroup], 0, pic_size - 1); + ue(bottom_right[iGroup], current->top_left[iGroup], pic_size - 1); + } + } else if (current->slice_group_map_type == 3 || + current->slice_group_map_type == 4 || + current->slice_group_map_type == 5) { + flag(slice_group_change_direction_flag); + ue(slice_group_change_rate_minus1, 0, pic_size - 1); + } else if (current->slice_group_map_type == 6) { + ue(pic_size_in_map_units_minus1, pic_size - 1, pic_size - 1); + for (i = 0; i <= current->pic_size_in_map_units_minus1; i++) + u(av_log2(2 * current->num_slice_groups_minus1 + 1), + slice_group_id[i], 0, current->num_slice_groups_minus1); + } + } + + ue(num_ref_idx_l0_default_active_minus1, 0, 31); + ue(num_ref_idx_l1_default_active_minus1, 0, 31); + + flag(weighted_pred_flag); + u(2, weighted_bipred_idc, 0, 2); + + se(pic_init_qp_minus26, -26 - 6 * sps->bit_depth_luma_minus8, +25); + se(pic_init_qs_minus26, -26, +25); + se(chroma_qp_index_offset, -12, +12); + + flag(deblocking_filter_control_present_flag); + flag(constrained_intra_pred_flag); + flag(redundant_pic_cnt_present_flag); + + if (more_rbsp_data(current->more_rbsp_data)) + { + flag(transform_8x8_mode_flag); + + flag(pic_scaling_matrix_present_flag); + if (current->pic_scaling_matrix_present_flag) { + for (i = 0; i < 6 + (((sps->chroma_format_idc != 3) ? 2 : 6) * + current->transform_8x8_mode_flag); i++) { + flag(pic_scaling_list_present_flag[i]); + if (current->pic_scaling_list_present_flag[i]) { + if (i < 6) + CHECK(FUNC(scaling_list)(ctx, rw, + ¤t->scaling_list_4x4[i], + 16)); + else + CHECK(FUNC(scaling_list)(ctx, rw, + ¤t->scaling_list_8x8[i - 6], + 64)); + } + } + } + + se(second_chroma_qp_index_offset, -12, +12); + } else { + infer(transform_8x8_mode_flag, 0); + infer(pic_scaling_matrix_present_flag, 0); + infer(second_chroma_qp_index_offset, current->chroma_qp_index_offset); + } + + CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); + + return 0; +} + +static int FUNC(sei_buffering_period)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIBufferingPeriod *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps; + int err, i, length; + + ue(seq_parameter_set_id, 0, 31); + + sps = h264->sps[current->seq_parameter_set_id]; + if (!sps) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", + current->seq_parameter_set_id); + return AVERROR_INVALIDDATA; + } + h264->active_sps = sps; + + if (sps->vui.nal_hrd_parameters_present_flag) { + for (i = 0; i <= sps->vui.nal_hrd_parameters.cpb_cnt_minus1; i++) { + length = sps->vui.nal_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1; + xu(length, initial_cpb_removal_delay[SchedSelIdx], + current->nal.initial_cpb_removal_delay[i], + 0, (1 << (uint64_t)length) - 1); + xu(length, initial_cpb_removal_delay_offset[SchedSelIdx], + current->nal.initial_cpb_removal_delay_offset[i], + 0, (1 << (uint64_t)length) - 1); + } + } + + if (sps->vui.vcl_hrd_parameters_present_flag) { + for (i = 0; i <= sps->vui.vcl_hrd_parameters.cpb_cnt_minus1; i++) { + length = sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 + 1; + xu(length, initial_cpb_removal_delay[SchedSelIdx], + current->vcl.initial_cpb_removal_delay[i], + 0, (1 << (uint64_t)length) - 1); + xu(length, initial_cpb_removal_delay_offset[SchedSelIdx], + current->vcl.initial_cpb_removal_delay_offset[i], + 0, (1 << (uint64_t)length) - 1); + } + } + + return 0; +} + +static int FUNC(sei_pic_timestamp)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIPicTimestamp *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps; + uint8_t time_offset_length; + int err; + + u(2, ct_type, 0, 2); + flag(nuit_field_based_flag); + u(5, counting_type, 0, 6); + flag(full_timestamp_flag); + flag(discontinuity_flag); + flag(cnt_dropped_flag); + u(8, n_frames, 0, 255); + if (current->full_timestamp_flag) { + u(6, seconds_value, 0, 59); + u(6, minutes_value, 0, 59); + u(5, hours_value, 0, 23); + } else { + flag(seconds_flag); + if (current->seconds_flag) { + u(6, seconds_value, 0, 59); + flag(minutes_flag); + if (current->minutes_flag) { + u(6, minutes_value, 0, 59); + flag(hours_flag); + if (current->hours_flag) + u(5, hours_value, 0, 23); + } + } + } + + sps = h264->active_sps; + if (sps->vui.nal_hrd_parameters_present_flag) + time_offset_length = sps->vui.nal_hrd_parameters.time_offset_length; + else if (sps->vui.vcl_hrd_parameters_present_flag) + time_offset_length = sps->vui.vcl_hrd_parameters.time_offset_length; + else + time_offset_length = 24; + + if (time_offset_length > 0) + u(time_offset_length, time_offset, + 0, (1 << (uint64_t)time_offset_length) - 1); + else + infer(time_offset, 0); + + return 0; +} + +static int FUNC(sei_pic_timing)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIPicTiming *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps; + int err; + + sps = h264->active_sps; + if (!sps) { + av_log(ctx->log_ctx, AV_LOG_ERROR, + "No active SPS for pic_timing.\n"); + return AVERROR_INVALIDDATA; + } + + if (sps->vui.nal_hrd_parameters_present_flag || + sps->vui.vcl_hrd_parameters_present_flag) { + const H264RawHRD *hrd; + + if (sps->vui.nal_hrd_parameters_present_flag) + hrd = &sps->vui.nal_hrd_parameters; + else if (sps->vui.vcl_hrd_parameters_present_flag) + hrd = &sps->vui.vcl_hrd_parameters; + else { + av_log(ctx->log_ctx, AV_LOG_ERROR, + "No HRD parameters for pic_timing.\n"); + return AVERROR_INVALIDDATA; + } + + u(hrd->cpb_removal_delay_length_minus1 + 1, cpb_removal_delay, + 0, (1 << (uint64_t)hrd->cpb_removal_delay_length_minus1) + 1); + u(hrd->dpb_output_delay_length_minus1 + 1, dpb_output_delay, + 0, (1 << (uint64_t)hrd->dpb_output_delay_length_minus1) + 1); + } + + if (sps->vui.pic_struct_present_flag) { + static const int num_clock_ts[9] = { + 1, 1, 1, 2, 2, 3, 3, 2, 3 + }; + int i; + + u(4, pic_struct, 0, 8); + if (current->pic_struct > 8) + return AVERROR_INVALIDDATA; + + for (i = 0; i < num_clock_ts[current->pic_struct]; i++) { + flag(clock_timestamp_flag[i]); + if (current->clock_timestamp_flag[i]) + CHECK(FUNC(sei_pic_timestamp)(ctx, rw, ¤t->timestamp[i])); + } + } + + return 0; +} + +static int FUNC(sei_user_data_registered)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIUserDataRegistered *current, + uint32_t *payload_size) +{ + int err, i, j; + + u(8, itu_t_t35_country_code, 0x00, 0xff); + if (current->itu_t_t35_country_code != 0xff) + i = 1; + else { + u(8, itu_t_t35_country_code_extension_byte, 0x00, 0xff); + i = 2; + } + +#ifdef READ + if (*payload_size < i) { + av_log(ctx->log_ctx, AV_LOG_ERROR, + "Invalid SEI user data registered payload.\n"); + return AVERROR_INVALIDDATA; + } + current->data_length = *payload_size - i; +#else + *payload_size = i + current->data_length; +#endif + + allocate(current->data, current->data_length); + for (j = 0; j < current->data_length; j++) + xu(8, itu_t_t35_payload_byte, current->data[j], 0x00, 0xff); + + return 0; +} + +static int FUNC(sei_user_data_unregistered)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIUserDataUnregistered *current, + uint32_t *payload_size) +{ + int err, i; + +#ifdef READ + if (*payload_size < 16) { + av_log(ctx->log_ctx, AV_LOG_ERROR, + "Invalid SEI user data unregistered payload.\n"); + return AVERROR_INVALIDDATA; + } + current->data_length = *payload_size - 16; +#else + *payload_size = 16 + current->data_length; +#endif + + for (i = 0; i < 16; i++) { + xu(8, uuid_iso_iec_11578, + current->uuid_iso_iec_11578[i], 0x00, 0xff); + } + + allocate(current->data, current->data_length); + + for (i = 0; i < current->data_length; i++) + xu(8, user_data_payload_byte, current->data[i], 0x00, 0xff); + + return 0; +} + +static int FUNC(sei_recovery_point)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIRecoveryPoint *current) +{ + int err; + + ue(recovery_frame_cnt, 0, 65535); + flag(exact_match_flag); + flag(broken_link_flag); + u(2, changing_slice_group_idc, 0, 2); + + return 0; +} + +static int FUNC(sei_display_orientation)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIDisplayOrientation *current) +{ + int err; + + flag(display_orientation_cancel_flag); + if (!current->display_orientation_cancel_flag) { + flag(hor_flip); + flag(ver_flip); + u(16, anticlockwise_rotation, 0, 65535); + ue(display_orientation_repetition_period, 0, 16384); + flag(display_orientation_extension_flag); + } + + return 0; +} + +static int FUNC(sei_payload)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEIPayload *current) +{ + int err, i; + int start_position, end_position; + +#ifdef READ + start_position = get_bits_count(rw); +#else + start_position = put_bits_count(rw); +#endif + + switch (current->payload_type) { + case H264_SEI_TYPE_BUFFERING_PERIOD: + CHECK(FUNC(sei_buffering_period) + (ctx, rw, ¤t->payload.buffering_period)); + break; + case H264_SEI_TYPE_PIC_TIMING: + CHECK(FUNC(sei_pic_timing) + (ctx, rw, ¤t->payload.pic_timing)); + break; + case H264_SEI_TYPE_FILLER_PAYLOAD: + { + av_unused int ff_byte = 0xff; + for (i = 0; i < current->payload_size; i++) + xu(8, ff_byte, ff_byte, 0xff, 0xff); + } + break; + case H264_SEI_TYPE_USER_DATA_REGISTERED: + CHECK(FUNC(sei_user_data_registered) + (ctx, rw, ¤t->payload.user_data_registered, ¤t->payload_size)); + break; + case H264_SEI_TYPE_USER_DATA_UNREGISTERED: + CHECK(FUNC(sei_user_data_unregistered) + (ctx, rw, ¤t->payload.user_data_unregistered, ¤t->payload_size)); + break; + case H264_SEI_TYPE_RECOVERY_POINT: + CHECK(FUNC(sei_recovery_point) + (ctx, rw, ¤t->payload.recovery_point)); + break; + case H264_SEI_TYPE_DISPLAY_ORIENTATION: + CHECK(FUNC(sei_display_orientation) + (ctx, rw, ¤t->payload.display_orientation)); + break; + default: + { + allocate(current->payload.other.data, current->payload_size); + for (i = 0; i < current->payload_size; i++) + xu(8, payload_byte, current->payload.other.data[i], 0, 255); + } + } + + if (byte_alignment(rw)) { + av_unused int one = 1, zero = 0; + xu(1, bit_equal_to_one, one, 1, 1); + while (byte_alignment(rw)) + xu(1, bit_equal_to_zero, zero, 0, 0); + } + +#ifdef READ + end_position = get_bits_count(rw); + if (end_position < start_position + 8 * current->payload_size) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Incorrect SEI payload length: " + "header %d bits, actually %d bits.\n", + 8 * current->payload_size, + end_position - start_position); + return AVERROR_INVALIDDATA; + } +#else + end_position = put_bits_count(rw); + current->payload_size = (end_position - start_position) / 8; +#endif + + return 0; +} + +static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSEI *current) +{ + int err, k; + + HEADER("Supplemental Enhancement Information"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_SEI)); + +#ifdef READ + for (k = 0; k < H264_MAX_SEI_PAYLOADS; k++) { + uint32_t payload_type = 0; + uint32_t payload_size = 0; + uint32_t tmp; + + while (show_bits(rw, 8) == 0xff) { + xu(8, ff_byte, tmp, 0xff, 0xff); + payload_type += 255; + } + xu(8, last_payload_type_byte, tmp, 0, 254); + payload_type += tmp; + + while (show_bits(rw, 8) == 0xff) { + xu(8, ff_byte, tmp, 0xff, 0xff); + payload_size += 255; + } + xu(8, last_payload_size_byte, tmp, 0, 254); + payload_size += tmp; + + current->payload[k].payload_type = payload_type; + current->payload[k].payload_size = payload_size; + + CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k])); + + if (!cbs_h2645_read_more_rbsp_data(rw)) + break; + } + if (k >= H264_MAX_SEI_PAYLOADS) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many payloads in " + "SEI message: found %d.\n", k); + return AVERROR_INVALIDDATA; + } + current->payload_count = k + 1; +#else + for (k = 0; k < current->payload_count; k++) { + PutBitContext start_state; + uint32_t tmp; + int need_size, i; + + // Somewhat clumsy: we write the payload twice when + // we don't know the size in advance. This will mess + // with trace output, but is otherwise harmless. + start_state = *rw; + need_size = !current->payload[k].payload_size; + for (i = 0; i < 1 + need_size; i++) { + *rw = start_state; + + tmp = current->payload[k].payload_type; + while (tmp >= 255) { + xu(8, ff_byte, 0xff, 0xff, 0xff); + tmp -= 255; + } + xu(8, last_payload_type_byte, tmp, 0, 254); + + tmp = current->payload[k].payload_size; + while (tmp >= 255) { + xu(8, ff_byte, 0xff, 0xff, 0xff); + tmp -= 255; + } + xu(8, last_payload_size_byte, tmp, 0, 254); + + CHECK(FUNC(sei_payload)(ctx, rw, ¤t->payload[k])); + } + } +#endif + + CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); + + return 0; +} + +static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawAUD *current) +{ + int err; + + HEADER("Access Unit Delimiter"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_AUD)); + + u(3, primary_pic_type, 0, 7); + + CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); + + return 0; +} + +static int FUNC(ref_pic_list_modification)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSliceHeader *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps = h264->active_sps; + int err, i, mopn; + + if (current->slice_type % 5 != 2 && + current->slice_type % 5 != 4) { + flag(ref_pic_list_modification_flag_l0); + if (current->ref_pic_list_modification_flag_l0) { + for (i = 0; i < H264_MAX_RPLM_COUNT; i++) { + xue(modification_of_pic_nums_idc, + current->rplm_l0[i].modification_of_pic_nums_idc, 0, 3); + + mopn = current->rplm_l0[i].modification_of_pic_nums_idc; + if (mopn == 3) + break; + + if (mopn == 0 || mopn == 1) + xue(abs_diff_pic_num_minus1, + current->rplm_l0[i].abs_diff_pic_num_minus1, + 0, (1 + current->field_pic_flag) * + (1 << (sps->log2_max_frame_num_minus4 + 4))); + else if (mopn == 2) + xue(long_term_pic_num, + current->rplm_l0[i].long_term_pic_num, + 0, sps->max_num_ref_frames - 1); + } + } + } + + if (current->slice_type % 5 == 1) { + flag(ref_pic_list_modification_flag_l1); + if (current->ref_pic_list_modification_flag_l1) { + for (i = 0; i < H264_MAX_RPLM_COUNT; i++) { + xue(modification_of_pic_nums_idc, + current->rplm_l1[i].modification_of_pic_nums_idc, 0, 3); + + mopn = current->rplm_l1[i].modification_of_pic_nums_idc; + if (mopn == 3) + break; + + if (mopn == 0 || mopn == 1) + xue(abs_diff_pic_num_minus1, + current->rplm_l1[i].abs_diff_pic_num_minus1, + 0, (1 + current->field_pic_flag) * + (1 << (sps->log2_max_frame_num_minus4 + 4))); + else if (mopn == 2) + xue(long_term_pic_num, + current->rplm_l1[i].long_term_pic_num, + 0, sps->max_num_ref_frames - 1); + } + } + } + + return 0; +} + +static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSliceHeader *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps = h264->active_sps; + int chroma; + int err, i, j; + + ue(luma_log2_weight_denom, 0, 7); + + chroma = !sps->separate_colour_plane_flag && sps->chroma_format_idc != 0; + if (chroma) + ue(chroma_log2_weight_denom, 0, 7); + + for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { + flag(luma_weight_l0_flag[i]); + if (current->luma_weight_l0_flag[i]) { + se(luma_weight_l0[i], -128, +127); + se(luma_offset_l0[i], -128, +127); + } + if (chroma) { + flag(chroma_weight_l0_flag[i]); + if (current->chroma_weight_l0_flag[i]) { + for (j = 0; j < 2; j++) { + se(chroma_weight_l0[i][j], -128, +127); + se(chroma_offset_l0[i][j], -128, +127); + } + } + } + } + + if (current->slice_type % 5 == 1) { + for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { + flag(luma_weight_l1_flag[i]); + if (current->luma_weight_l1_flag[i]) { + se(luma_weight_l1[i], -128, +127); + se(luma_offset_l1[i], -128, +127); + } + if (chroma) { + flag(chroma_weight_l1_flag[i]); + if (current->chroma_weight_l1_flag[i]) { + for (j = 0; j < 2; j++) { + se(chroma_weight_l1[i][j], -128, +127); + se(chroma_offset_l1[i][j], -128, +127); + } + } + } + } + } + + return 0; +} + +static int FUNC(dec_ref_pic_marking)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSliceHeader *current, int idr_pic_flag) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps = h264->active_sps; + int err, i; + uint32_t mmco; + + if (idr_pic_flag) { + flag(no_output_of_prior_pics_flag); + flag(long_term_reference_flag); + } else { + flag(adaptive_ref_pic_marking_mode_flag); + if (current->adaptive_ref_pic_marking_mode_flag) { + for (i = 0; i < H264_MAX_MMCO_COUNT; i++) { + xue(memory_management_control_operation, + current->mmco[i].memory_management_control_operation, + 0, 6); + + mmco = current->mmco[i].memory_management_control_operation; + if (mmco == 0) + break; + + if (mmco == 1 || mmco == 3) + xue(difference_of_pic_nums_minus1, + current->mmco[i].difference_of_pic_nums_minus1, + 0, INT32_MAX); + if (mmco == 2) + xue(long_term_pic_num, + current->mmco[i].long_term_pic_num, + 0, sps->max_num_ref_frames - 1); + if (mmco == 3 || mmco == 6) + xue(long_term_frame_idx, + current->mmco[i].long_term_frame_idx, + 0, sps->max_num_ref_frames - 1); + if (mmco == 4) + xue(max_long_term_frame_idx_plus1, + current->mmco[i].max_long_term_frame_idx_plus1, + 0, sps->max_num_ref_frames); + } + if (i == H264_MAX_MMCO_COUNT) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many " + "memory management control operations.\n"); + return AVERROR_INVALIDDATA; + } + } + } + + return 0; +} + +static int FUNC(slice_header)(CodedBitstreamContext *ctx, RWContext *rw, + H264RawSliceHeader *current) +{ + CodedBitstreamH264Context *h264 = ctx->priv_data; + const H264RawSPS *sps; + const H264RawPPS *pps; + int err; + int idr_pic_flag; + int slice_type_i, slice_type_p, slice_type_b; + int slice_type_si, slice_type_sp; + + HEADER("Slice Header"); + + CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, + 1 << H264_NAL_SLICE | + 1 << H264_NAL_IDR_SLICE | + 1 << H264_NAL_AUXILIARY_SLICE)); + + if (current->nal_unit_header.nal_unit_type == H264_NAL_AUXILIARY_SLICE) { + if (!h264->last_slice_nal_unit_type) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Auxiliary slice " + "is not decodable without the main picture " + "in the same access unit.\n"); + return AVERROR_INVALIDDATA; + } + } else { + h264->last_slice_nal_unit_type = + current->nal_unit_header.nal_unit_type; + } + idr_pic_flag = h264->last_slice_nal_unit_type == H264_NAL_IDR_SLICE; + + ue(first_mb_in_slice, 0, H264_MAX_MB_PIC_SIZE - 1); + ue(slice_type, 0, 9); + + slice_type_i = current->slice_type % 5 == 2; + slice_type_p = current->slice_type % 5 == 0; + slice_type_b = current->slice_type % 5 == 1; + slice_type_si = current->slice_type % 5 == 4; + slice_type_sp = current->slice_type % 5 == 3; + + if (idr_pic_flag && !(slice_type_i || slice_type_si)) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid slice type %d " + "for IDR picture.\n", current->slice_type); + return AVERROR_INVALIDDATA; + } + + ue(pic_parameter_set_id, 0, 255); + + pps = h264->pps[current->pic_parameter_set_id]; + if (!pps) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n", + current->pic_parameter_set_id); + return AVERROR_INVALIDDATA; + } + h264->active_pps = pps; + + sps = h264->sps[pps->seq_parameter_set_id]; + if (!sps) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", + pps->seq_parameter_set_id); + return AVERROR_INVALIDDATA; + } + h264->active_sps = sps; + + if (sps->separate_colour_plane_flag) + u(2, colour_plane_id, 0, 2); + + u(sps->log2_max_frame_num_minus4 + 4, frame_num, + 0, (1 << (sps->log2_max_frame_num_minus4 + 4)) - 1); + + if (!sps->frame_mbs_only_flag) { + flag(field_pic_flag); + if (current->field_pic_flag) + flag(bottom_field_flag); + else + infer(bottom_field_flag, 0); + } else { + infer(field_pic_flag, 0); + infer(bottom_field_flag, 0); + } + + if (idr_pic_flag) + ue(idr_pic_id, 0, 65535); + + if (sps->pic_order_cnt_type == 0) { + u(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, pic_order_cnt_lsb, + 0, (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1); + if (pps->bottom_field_pic_order_in_frame_present_flag && + !current->field_pic_flag) + se(delta_pic_order_cnt_bottom, INT32_MIN + 1, INT32_MAX); + + } else if (sps->pic_order_cnt_type == 1) { + if (!sps->delta_pic_order_always_zero_flag) { + se(delta_pic_order_cnt[0], INT32_MIN + 1, INT32_MAX); + if (pps->bottom_field_pic_order_in_frame_present_flag && + !current->field_pic_flag) + se(delta_pic_order_cnt[1], INT32_MIN + 1, INT32_MAX); + else + infer(delta_pic_order_cnt[1], 0); + } else { + infer(delta_pic_order_cnt[0], 0); + infer(delta_pic_order_cnt[1], 0); + } + } + + if (pps->redundant_pic_cnt_present_flag) + ue(redundant_pic_cnt, 0, 127); + + if (slice_type_b) + flag(direct_spatial_mv_pred_flag); + + if (slice_type_p || slice_type_sp || slice_type_b) { + flag(num_ref_idx_active_override_flag); + if (current->num_ref_idx_active_override_flag) { + ue(num_ref_idx_l0_active_minus1, 0, 31); + if (slice_type_b) + ue(num_ref_idx_l1_active_minus1, 0, 31); + } else { + infer(num_ref_idx_l0_active_minus1, + pps->num_ref_idx_l0_default_active_minus1); + infer(num_ref_idx_l1_active_minus1, + pps->num_ref_idx_l1_default_active_minus1); + } + } + + if (current->nal_unit_header.nal_unit_type == 20 || + current->nal_unit_header.nal_unit_type == 21) { + av_log(ctx->log_ctx, AV_LOG_ERROR, "MVC / 3DAVC not supported.\n"); + return AVERROR_PATCHWELCOME; + } else { + CHECK(FUNC(ref_pic_list_modification)(ctx, rw, current)); + } + + if ((pps->weighted_pred_flag && (slice_type_p || slice_type_sp)) || + (pps->weighted_bipred_idc == 1 && slice_type_b)) { + CHECK(FUNC(pred_weight_table)(ctx, rw, current)); + } + + if (current->nal_unit_header.nal_ref_idc != 0) { + CHECK(FUNC(dec_ref_pic_marking)(ctx, rw, current, idr_pic_flag)); + } + + if (pps->entropy_coding_mode_flag && + !slice_type_i && !slice_type_si) { + ue(cabac_init_idc, 0, 2); + } + + se(slice_qp_delta, - 51 - 6 * sps->bit_depth_luma_minus8, + + 51 + 6 * sps->bit_depth_luma_minus8); + if (slice_type_sp || slice_type_si) { + if (slice_type_sp) + flag(sp_for_switch_flag); + se(slice_qs_delta, -51, +51); + } + + if (pps->deblocking_filter_control_present_flag) { + ue(disable_deblocking_filter_idc, 0, 2); + if (current->disable_deblocking_filter_idc != 1) { + se(slice_alpha_c0_offset_div2, -6, +6); + se(slice_beta_offset_div2, -6, +6); + } else { + infer(slice_alpha_c0_offset_div2, 0); + infer(slice_beta_offset_div2, 0); + } + } else { + infer(disable_deblocking_filter_idc, 0); + infer(slice_alpha_c0_offset_div2, 0); + infer(slice_beta_offset_div2, 0); + } + + if (pps->num_slice_groups_minus1 > 0 && + pps->slice_group_map_type >= 3 && + pps->slice_group_map_type <= 5) { + unsigned int pic_size, max, bits; + + pic_size = (sps->pic_width_in_mbs_minus1 + 1) * + (sps->pic_height_in_map_units_minus1 + 1); + max = (pic_size + pps->slice_group_change_rate_minus1) / + (pps->slice_group_change_rate_minus1 + 1); + bits = av_log2(2 * max - 1); + + u(bits, slice_group_change_cycle, 0, max); + } + + if (pps->entropy_coding_mode_flag) { + av_unused int one = 1; + while (byte_alignment(rw)) + xu(1, cabac_alignment_one_bit, one, 1, 1); + } + + return 0; +} -- cgit v1.2.3