| /* |
| * 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 |
| */ |
| |
| #include "libavutil/common.h" |
| #include "libavutil/opt.h" |
| |
| #include "bsf.h" |
| #include "cbs.h" |
| #include "cbs_h265.h" |
| #include "hevc.h" |
| |
| enum { |
| PASS, |
| INSERT, |
| REMOVE, |
| }; |
| |
| typedef struct H265MetadataContext { |
| const AVClass *class; |
| |
| CodedBitstreamContext *cbc; |
| CodedBitstreamFragment access_unit; |
| |
| H265RawAUD aud_nal; |
| |
| int aud; |
| |
| AVRational sample_aspect_ratio; |
| |
| int video_format; |
| int video_full_range_flag; |
| int colour_primaries; |
| int transfer_characteristics; |
| int matrix_coefficients; |
| |
| int chroma_sample_loc_type; |
| |
| AVRational tick_rate; |
| int poc_proportional_to_timing_flag; |
| int num_ticks_poc_diff_one; |
| |
| int crop_left; |
| int crop_right; |
| int crop_top; |
| int crop_bottom; |
| } H265MetadataContext; |
| |
| |
| static int h265_metadata_update_vps(AVBSFContext *bsf, |
| H265RawVPS *vps) |
| { |
| H265MetadataContext *ctx = bsf->priv_data; |
| |
| if (ctx->tick_rate.num && ctx->tick_rate.den) { |
| int num, den; |
| |
| av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den, |
| UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX); |
| |
| vps->vps_time_scale = num; |
| vps->vps_num_units_in_tick = den; |
| |
| vps->vps_timing_info_present_flag = 1; |
| |
| if (ctx->num_ticks_poc_diff_one > 0) { |
| vps->vps_num_ticks_poc_diff_one_minus1 = |
| ctx->num_ticks_poc_diff_one - 1; |
| vps->vps_poc_proportional_to_timing_flag = 1; |
| } else if (ctx->num_ticks_poc_diff_one == 0) { |
| vps->vps_poc_proportional_to_timing_flag = 0; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int h265_metadata_update_sps(AVBSFContext *bsf, |
| H265RawSPS *sps) |
| { |
| H265MetadataContext *ctx = bsf->priv_data; |
| int need_vui = 0; |
| int crop_unit_x, crop_unit_y; |
| |
| if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) { |
| // Table E-1. |
| static const AVRational sar_idc[] = { |
| { 0, 0 }, // Unspecified (never written here). |
| { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 }, |
| { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 }, |
| { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 }, |
| { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 }, |
| }; |
| int num, den, i; |
| |
| av_reduce(&num, &den, ctx->sample_aspect_ratio.num, |
| ctx->sample_aspect_ratio.den, 65535); |
| |
| for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) { |
| if (num == sar_idc[i].num && |
| den == sar_idc[i].den) |
| break; |
| } |
| if (i == FF_ARRAY_ELEMS(sar_idc)) { |
| sps->vui.aspect_ratio_idc = 255; |
| sps->vui.sar_width = num; |
| sps->vui.sar_height = den; |
| } else { |
| sps->vui.aspect_ratio_idc = i; |
| } |
| sps->vui.aspect_ratio_info_present_flag = 1; |
| need_vui = 1; |
| } |
| |
| #define SET_OR_INFER(field, value, present_flag, infer) do { \ |
| if (value >= 0) { \ |
| field = value; \ |
| need_vui = 1; \ |
| } else if (!present_flag) \ |
| field = infer; \ |
| } while (0) |
| |
| if (ctx->video_format >= 0 || |
| ctx->video_full_range_flag >= 0 || |
| ctx->colour_primaries >= 0 || |
| ctx->transfer_characteristics >= 0 || |
| ctx->matrix_coefficients >= 0) { |
| |
| SET_OR_INFER(sps->vui.video_format, ctx->video_format, |
| sps->vui.video_signal_type_present_flag, 5); |
| |
| SET_OR_INFER(sps->vui.video_full_range_flag, |
| ctx->video_full_range_flag, |
| sps->vui.video_signal_type_present_flag, 0); |
| |
| if (ctx->colour_primaries >= 0 || |
| ctx->transfer_characteristics >= 0 || |
| ctx->matrix_coefficients >= 0) { |
| |
| SET_OR_INFER(sps->vui.colour_primaries, |
| ctx->colour_primaries, |
| sps->vui.colour_description_present_flag, 2); |
| |
| SET_OR_INFER(sps->vui.transfer_characteristics, |
| ctx->transfer_characteristics, |
| sps->vui.colour_description_present_flag, 2); |
| |
| SET_OR_INFER(sps->vui.matrix_coefficients, |
| ctx->matrix_coefficients, |
| sps->vui.colour_description_present_flag, 2); |
| |
| sps->vui.colour_description_present_flag = 1; |
| } |
| sps->vui.video_signal_type_present_flag = 1; |
| need_vui = 1; |
| } |
| |
| if (ctx->chroma_sample_loc_type >= 0) { |
| sps->vui.chroma_sample_loc_type_top_field = |
| ctx->chroma_sample_loc_type; |
| sps->vui.chroma_sample_loc_type_bottom_field = |
| ctx->chroma_sample_loc_type; |
| sps->vui.chroma_loc_info_present_flag = 1; |
| need_vui = 1; |
| } |
| |
| if (ctx->tick_rate.num && ctx->tick_rate.den) { |
| int num, den; |
| |
| av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den, |
| UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX); |
| |
| sps->vui.vui_time_scale = num; |
| sps->vui.vui_num_units_in_tick = den; |
| |
| sps->vui.vui_timing_info_present_flag = 1; |
| need_vui = 1; |
| |
| if (ctx->num_ticks_poc_diff_one > 0) { |
| sps->vui.vui_num_ticks_poc_diff_one_minus1 = |
| ctx->num_ticks_poc_diff_one - 1; |
| sps->vui.vui_poc_proportional_to_timing_flag = 1; |
| } else if (ctx->num_ticks_poc_diff_one == 0) { |
| sps->vui.vui_poc_proportional_to_timing_flag = 0; |
| } |
| } |
| |
| if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) { |
| crop_unit_x = 1; |
| crop_unit_y = 1; |
| } else { |
| crop_unit_x = 1 + (sps->chroma_format_idc < 3); |
| crop_unit_y = 1 + (sps->chroma_format_idc < 2); |
| } |
| #define CROP(border, unit) do { \ |
| if (ctx->crop_ ## border >= 0) { \ |
| if (ctx->crop_ ## border % unit != 0) { \ |
| av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \ |
| "must be a multiple of %d.\n", #border, unit); \ |
| return AVERROR(EINVAL); \ |
| } \ |
| sps->conf_win_ ## border ## _offset = \ |
| ctx->crop_ ## border / unit; \ |
| sps->conformance_window_flag = 1; \ |
| } \ |
| } while (0) |
| CROP(left, crop_unit_x); |
| CROP(right, crop_unit_x); |
| CROP(top, crop_unit_y); |
| CROP(bottom, crop_unit_y); |
| #undef CROP |
| |
| if (need_vui) |
| sps->vui_parameters_present_flag = 1; |
| |
| return 0; |
| } |
| |
| static int h265_metadata_filter(AVBSFContext *bsf, AVPacket *out) |
| { |
| H265MetadataContext *ctx = bsf->priv_data; |
| AVPacket *in = NULL; |
| CodedBitstreamFragment *au = &ctx->access_unit; |
| int err, i; |
| |
| err = ff_bsf_get_packet(bsf, &in); |
| if (err < 0) |
| return err; |
| |
| err = ff_cbs_read_packet(ctx->cbc, au, in); |
| if (err < 0) { |
| av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n"); |
| goto fail; |
| } |
| |
| if (au->nb_units == 0) { |
| av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n"); |
| err = AVERROR_INVALIDDATA; |
| goto fail; |
| } |
| |
| // If an AUD is present, it must be the first NAL unit. |
| if (au->units[0].type == HEVC_NAL_AUD) { |
| if (ctx->aud == REMOVE) |
| ff_cbs_delete_unit(ctx->cbc, au, 0); |
| } else { |
| if (ctx->aud == INSERT) { |
| H265RawAUD *aud = &ctx->aud_nal; |
| int pic_type = 0, temporal_id = 8, layer_id = 0; |
| |
| for (i = 0; i < au->nb_units; i++) { |
| const H265RawNALUnitHeader *nal = au->units[i].content; |
| if (!nal) |
| continue; |
| if (nal->nuh_temporal_id_plus1 < temporal_id + 1) |
| temporal_id = nal->nuh_temporal_id_plus1 - 1; |
| |
| if (au->units[i].type <= HEVC_NAL_RSV_VCL31) { |
| const H265RawSlice *slice = au->units[i].content; |
| layer_id = nal->nuh_layer_id; |
| if (slice->header.slice_type == HEVC_SLICE_B && |
| pic_type < 2) |
| pic_type = 2; |
| if (slice->header.slice_type == HEVC_SLICE_P && |
| pic_type < 1) |
| pic_type = 1; |
| } |
| } |
| |
| aud->nal_unit_header = (H265RawNALUnitHeader) { |
| .nal_unit_type = HEVC_NAL_AUD, |
| .nuh_layer_id = layer_id, |
| .nuh_temporal_id_plus1 = temporal_id + 1, |
| }; |
| aud->pic_type = pic_type; |
| |
| err = ff_cbs_insert_unit_content(ctx->cbc, au, |
| 0, HEVC_NAL_AUD, aud, NULL); |
| if (err) { |
| av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n"); |
| goto fail; |
| } |
| } |
| } |
| |
| for (i = 0; i < au->nb_units; i++) { |
| if (au->units[i].type == HEVC_NAL_VPS) { |
| err = h265_metadata_update_vps(bsf, au->units[i].content); |
| if (err < 0) |
| goto fail; |
| } |
| if (au->units[i].type == HEVC_NAL_SPS) { |
| err = h265_metadata_update_sps(bsf, au->units[i].content); |
| if (err < 0) |
| goto fail; |
| } |
| } |
| |
| err = ff_cbs_write_packet(ctx->cbc, out, au); |
| if (err < 0) { |
| av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n"); |
| goto fail; |
| } |
| |
| err = av_packet_copy_props(out, in); |
| if (err < 0) |
| goto fail; |
| |
| err = 0; |
| fail: |
| ff_cbs_fragment_uninit(ctx->cbc, au); |
| |
| if (err < 0) |
| av_packet_unref(out); |
| av_packet_free(&in); |
| |
| return err; |
| } |
| |
| static int h265_metadata_init(AVBSFContext *bsf) |
| { |
| H265MetadataContext *ctx = bsf->priv_data; |
| CodedBitstreamFragment *au = &ctx->access_unit; |
| int err, i; |
| |
| err = ff_cbs_init(&ctx->cbc, AV_CODEC_ID_HEVC, bsf); |
| if (err < 0) |
| return err; |
| |
| if (bsf->par_in->extradata) { |
| err = ff_cbs_read_extradata(ctx->cbc, au, bsf->par_in); |
| if (err < 0) { |
| av_log(bsf, AV_LOG_ERROR, "Failed to read extradata.\n"); |
| goto fail; |
| } |
| |
| for (i = 0; i < au->nb_units; i++) { |
| if (au->units[i].type == HEVC_NAL_VPS) { |
| err = h265_metadata_update_vps(bsf, au->units[i].content); |
| if (err < 0) |
| goto fail; |
| } |
| if (au->units[i].type == HEVC_NAL_SPS) { |
| err = h265_metadata_update_sps(bsf, au->units[i].content); |
| if (err < 0) |
| goto fail; |
| } |
| } |
| |
| err = ff_cbs_write_extradata(ctx->cbc, bsf->par_out, au); |
| if (err < 0) { |
| av_log(bsf, AV_LOG_ERROR, "Failed to write extradata.\n"); |
| goto fail; |
| } |
| } |
| |
| err = 0; |
| fail: |
| ff_cbs_fragment_uninit(ctx->cbc, au); |
| return err; |
| } |
| |
| static void h265_metadata_close(AVBSFContext *bsf) |
| { |
| H265MetadataContext *ctx = bsf->priv_data; |
| ff_cbs_close(&ctx->cbc); |
| } |
| |
| #define OFFSET(x) offsetof(H265MetadataContext, x) |
| #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) |
| static const AVOption h265_metadata_options[] = { |
| { "aud", "Access Unit Delimiter NAL units", |
| OFFSET(aud), AV_OPT_TYPE_INT, |
| { .i64 = PASS }, PASS, REMOVE, FLAGS, "aud" }, |
| { "pass", NULL, 0, AV_OPT_TYPE_CONST, |
| { .i64 = PASS }, .flags = FLAGS, .unit = "aud" }, |
| { "insert", NULL, 0, AV_OPT_TYPE_CONST, |
| { .i64 = INSERT }, .flags = FLAGS, .unit = "aud" }, |
| { "remove", NULL, 0, AV_OPT_TYPE_CONST, |
| { .i64 = REMOVE }, .flags = FLAGS, .unit = "aud" }, |
| |
| { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)", |
| OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, |
| { .dbl = 0.0 }, 0, 65535, FLAGS }, |
| |
| { "video_format", "Set video format (table E-2)", |
| OFFSET(video_format), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 7, FLAGS }, |
| { "video_full_range_flag", "Set video full range flag", |
| OFFSET(video_full_range_flag), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 1, FLAGS }, |
| { "colour_primaries", "Set colour primaries (table E-3)", |
| OFFSET(colour_primaries), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 255, FLAGS }, |
| { "transfer_characteristics", "Set transfer characteristics (table E-4)", |
| OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 255, FLAGS }, |
| { "matrix_coefficients", "Set matrix coefficients (table E-5)", |
| OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 255, FLAGS }, |
| |
| { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)", |
| OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, 6, FLAGS }, |
| |
| { "tick_rate", |
| "Set VPS and VUI tick rate (num_units_in_tick / time_scale)", |
| OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL, |
| { .dbl = 0.0 }, 0, UINT_MAX, FLAGS }, |
| { "num_ticks_poc_diff_one", |
| "Set VPS and VUI number of ticks per POC increment", |
| OFFSET(num_ticks_poc_diff_one), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, INT_MAX, FLAGS }, |
| |
| { "crop_left", "Set left border crop offset", |
| OFFSET(crop_left), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, HEVC_MAX_WIDTH, FLAGS }, |
| { "crop_right", "Set right border crop offset", |
| OFFSET(crop_right), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, HEVC_MAX_WIDTH, FLAGS }, |
| { "crop_top", "Set top border crop offset", |
| OFFSET(crop_top), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, HEVC_MAX_HEIGHT, FLAGS }, |
| { "crop_bottom", "Set bottom border crop offset", |
| OFFSET(crop_bottom), AV_OPT_TYPE_INT, |
| { .i64 = -1 }, -1, HEVC_MAX_HEIGHT, FLAGS }, |
| |
| { NULL } |
| }; |
| |
| static const AVClass h265_metadata_class = { |
| .class_name = "h265_metadata_bsf", |
| .item_name = av_default_item_name, |
| .option = h265_metadata_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| static const enum AVCodecID h265_metadata_codec_ids[] = { |
| AV_CODEC_ID_HEVC, AV_CODEC_ID_NONE, |
| }; |
| |
| const AVBitStreamFilter ff_hevc_metadata_bsf = { |
| .name = "hevc_metadata", |
| .priv_data_size = sizeof(H265MetadataContext), |
| .priv_class = &h265_metadata_class, |
| .init = &h265_metadata_init, |
| .close = &h265_metadata_close, |
| .filter = &h265_metadata_filter, |
| .codec_ids = h265_metadata_codec_ids, |
| }; |
