mirror of
https://git.ffmpeg.org/ffmpeg.git
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680b3cee1f
It's a common usecase to request a video size after crop. Before this patch, user must know the video size before crop, then set crop_right/crop_bottom accordingly. Since HEVC can have different CTU size, it's not easy to get/deduce the video size before crop. With the new width/height options, there is no such requirement. Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
600 lines
20 KiB
C
600 lines
20 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "bsf.h"
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#include "bsf_internal.h"
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#include "cbs.h"
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#include "cbs_bsf.h"
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#include "cbs_h265.h"
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#include "h2645data.h"
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#include "h265_profile_level.h"
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#include "hevc/hevc.h"
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enum {
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LEVEL_UNSET = -2,
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LEVEL_AUTO = -1,
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};
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typedef struct H265MetadataContext {
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CBSBSFContext common;
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H265RawAUD aud_nal;
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int aud;
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AVRational sample_aspect_ratio;
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int video_format;
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int video_full_range_flag;
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int colour_primaries;
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int transfer_characteristics;
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int matrix_coefficients;
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int chroma_sample_loc_type;
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AVRational tick_rate;
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int poc_proportional_to_timing_flag;
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int num_ticks_poc_diff_one;
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int crop_left;
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int crop_right;
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int crop_top;
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int crop_bottom;
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int width;
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int height;
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int level;
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int level_guess;
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int level_warned;
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} H265MetadataContext;
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static void h265_metadata_guess_level(AVBSFContext *bsf,
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const CodedBitstreamFragment *au)
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{
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H265MetadataContext *ctx = bsf->priv_data;
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const H265LevelDescriptor *desc;
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const H265RawProfileTierLevel *ptl = NULL;
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const H265RawHRDParameters *hrd = NULL;
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int64_t bit_rate = 0;
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int width = 0, height = 0;
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int tile_cols = 0, tile_rows = 0;
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int max_dec_pic_buffering = 0;
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int i;
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for (i = 0; i < au->nb_units; i++) {
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const CodedBitstreamUnit *unit = &au->units[i];
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if (unit->type == HEVC_NAL_VPS) {
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const H265RawVPS *vps = unit->content;
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ptl = &vps->profile_tier_level;
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max_dec_pic_buffering = vps->vps_max_dec_pic_buffering_minus1[0] + 1;
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if (vps->vps_num_hrd_parameters > 0)
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hrd = &vps->hrd_parameters[0];
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} else if (unit->type == HEVC_NAL_SPS) {
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const H265RawSPS *sps = unit->content;
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ptl = &sps->profile_tier_level;
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max_dec_pic_buffering = sps->sps_max_dec_pic_buffering_minus1[0] + 1;
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width = sps->pic_width_in_luma_samples;
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height = sps->pic_height_in_luma_samples;
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if (sps->vui.vui_hrd_parameters_present_flag)
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hrd = &sps->vui.hrd_parameters;
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} else if (unit->type == HEVC_NAL_PPS) {
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const H265RawPPS *pps = unit->content;
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if (pps->tiles_enabled_flag) {
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tile_cols = pps->num_tile_columns_minus1 + 1;
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tile_rows = pps->num_tile_rows_minus1 + 1;
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}
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}
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}
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if (hrd) {
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if (hrd->nal_hrd_parameters_present_flag) {
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bit_rate = (hrd->nal_sub_layer_hrd_parameters[0].bit_rate_value_minus1[0] + 1) *
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(INT64_C(1) << hrd->bit_rate_scale + 6);
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} else if (hrd->vcl_hrd_parameters_present_flag) {
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bit_rate = (hrd->vcl_sub_layer_hrd_parameters[0].bit_rate_value_minus1[0] + 1) *
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(INT64_C(1) << hrd->bit_rate_scale + 6);
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// Adjust for VCL vs. NAL limits.
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bit_rate = bit_rate * 11 / 10;
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}
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}
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desc = ff_h265_guess_level(ptl, bit_rate, width, height,
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0, tile_rows, tile_cols,
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max_dec_pic_buffering);
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if (desc) {
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av_log(bsf, AV_LOG_DEBUG, "Stream appears to conform to "
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"level %s.\n", desc->name);
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ctx->level_guess = desc->level_idc;
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}
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}
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static void h265_metadata_update_level(AVBSFContext *bsf,
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uint8_t *level_idc)
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{
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H265MetadataContext *ctx = bsf->priv_data;
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if (ctx->level != LEVEL_UNSET) {
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if (ctx->level == LEVEL_AUTO) {
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if (ctx->level_guess) {
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*level_idc = ctx->level_guess;
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} else {
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if (!ctx->level_warned) {
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av_log(bsf, AV_LOG_WARNING, "Unable to determine level "
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"of stream: using level 8.5.\n");
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ctx->level_warned = 1;
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}
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*level_idc = 255;
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}
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} else {
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*level_idc = ctx->level;
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}
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}
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}
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static int h265_metadata_update_vps(AVBSFContext *bsf,
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H265RawVPS *vps)
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{
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H265MetadataContext *ctx = bsf->priv_data;
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if (ctx->tick_rate.num && ctx->tick_rate.den) {
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int num, den;
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av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
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UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
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vps->vps_time_scale = num;
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vps->vps_num_units_in_tick = den;
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vps->vps_timing_info_present_flag = 1;
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if (ctx->num_ticks_poc_diff_one > 0) {
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vps->vps_num_ticks_poc_diff_one_minus1 =
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ctx->num_ticks_poc_diff_one - 1;
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vps->vps_poc_proportional_to_timing_flag = 1;
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} else if (ctx->num_ticks_poc_diff_one == 0) {
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vps->vps_poc_proportional_to_timing_flag = 0;
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}
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}
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h265_metadata_update_level(bsf, &vps->profile_tier_level.general_level_idc);
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return 0;
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}
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static int h265_metadata_deduce_crop(AVBSFContext *bsf, const H265RawSPS *sps,
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int *crop_left, int *crop_right,
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int *crop_top, int *crop_bottom)
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{
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const H265MetadataContext *ctx = bsf->priv_data;
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int left = ctx->crop_left;
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int right = ctx->crop_right;
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int top = ctx->crop_top;
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int bottom = ctx->crop_bottom;
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if (ctx->width > 0) {
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if (ctx->width > sps->pic_width_in_luma_samples) {
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av_log(bsf, AV_LOG_ERROR,
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"The width option value %d is larger than picture width %d\n",
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ctx->width, sps->pic_width_in_luma_samples);
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return AVERROR(EINVAL);
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}
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if (left < 0) {
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if (right > 0)
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left = sps->pic_width_in_luma_samples - ctx->width - right;
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else
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left = 0;
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}
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if (right < 0)
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right = sps->pic_width_in_luma_samples - ctx->width - left;
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if (left < 0 || right < 0 || (left + right + ctx->width) !=
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sps->pic_width_in_luma_samples) {
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av_log(bsf, AV_LOG_ERROR,
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"Invalid value for crop_left %d, crop_right %d, width after "
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"crop %d, with picture width %d\n",
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ctx->crop_left, ctx->crop_right, ctx->width,
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sps->pic_width_in_luma_samples);
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return AVERROR(EINVAL);
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}
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}
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if (ctx->height > 0) {
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if (ctx->height > sps->pic_height_in_luma_samples) {
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av_log(bsf, AV_LOG_ERROR,
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"The height option value %d is larger than picture height %d\n",
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ctx->height, sps->pic_height_in_luma_samples);
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return AVERROR(EINVAL);
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}
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if (top < 0) {
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if (bottom > 0)
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top = sps->pic_height_in_luma_samples - ctx->height - bottom;
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else
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top = 0;
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}
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if (bottom < 0)
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bottom = sps->pic_height_in_luma_samples - ctx->height - top;
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if (top < 0 || bottom < 0 || (top + bottom + ctx->height) !=
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sps->pic_height_in_luma_samples) {
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av_log(bsf, AV_LOG_ERROR,
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"Invalid value for crop_top %d, crop_bottom %d, height after "
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"crop %d, with picture height %d\n",
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ctx->crop_top, ctx->crop_bottom, ctx->height,
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sps->pic_height_in_luma_samples);
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return AVERROR(EINVAL);
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}
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}
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*crop_left = left;
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*crop_right = right;
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*crop_top = top;
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*crop_bottom = bottom;
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return 0;
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}
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static int h265_metadata_update_sps(AVBSFContext *bsf,
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H265RawSPS *sps)
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{
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H265MetadataContext *ctx = bsf->priv_data;
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int need_vui = 0;
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int crop_unit_x, crop_unit_y;
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/* Use local variables to avoid modifying context fields in case of video
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* resolution changed. Crop doesn't work well with resolution change, this
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* is the best we can do.
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*/
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int crop_left, crop_right, crop_top, crop_bottom;
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int ret;
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if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) {
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int num, den, i;
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av_reduce(&num, &den, ctx->sample_aspect_ratio.num,
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ctx->sample_aspect_ratio.den, 65535);
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for (i = 1; i < FF_ARRAY_ELEMS(ff_h2645_pixel_aspect); i++) {
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if (num == ff_h2645_pixel_aspect[i].num &&
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den == ff_h2645_pixel_aspect[i].den)
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break;
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}
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if (i == FF_ARRAY_ELEMS(ff_h2645_pixel_aspect)) {
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sps->vui.aspect_ratio_idc = 255;
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sps->vui.sar_width = num;
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sps->vui.sar_height = den;
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} else {
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sps->vui.aspect_ratio_idc = i;
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}
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sps->vui.aspect_ratio_info_present_flag = 1;
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need_vui = 1;
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}
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#define SET_OR_INFER(field, value, present_flag, infer) do { \
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if (value >= 0) { \
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field = value; \
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need_vui = 1; \
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} else if (!present_flag) \
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field = infer; \
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} while (0)
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if (ctx->video_format >= 0 ||
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ctx->video_full_range_flag >= 0 ||
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ctx->colour_primaries >= 0 ||
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ctx->transfer_characteristics >= 0 ||
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ctx->matrix_coefficients >= 0) {
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SET_OR_INFER(sps->vui.video_format, ctx->video_format,
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sps->vui.video_signal_type_present_flag, 5);
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SET_OR_INFER(sps->vui.video_full_range_flag,
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ctx->video_full_range_flag,
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sps->vui.video_signal_type_present_flag, 0);
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if (ctx->colour_primaries >= 0 ||
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ctx->transfer_characteristics >= 0 ||
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ctx->matrix_coefficients >= 0) {
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SET_OR_INFER(sps->vui.colour_primaries,
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ctx->colour_primaries,
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sps->vui.colour_description_present_flag, 2);
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SET_OR_INFER(sps->vui.transfer_characteristics,
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ctx->transfer_characteristics,
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sps->vui.colour_description_present_flag, 2);
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SET_OR_INFER(sps->vui.matrix_coefficients,
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ctx->matrix_coefficients,
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sps->vui.colour_description_present_flag, 2);
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sps->vui.colour_description_present_flag = 1;
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}
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sps->vui.video_signal_type_present_flag = 1;
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need_vui = 1;
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}
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if (ctx->chroma_sample_loc_type >= 0) {
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sps->vui.chroma_sample_loc_type_top_field =
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ctx->chroma_sample_loc_type;
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sps->vui.chroma_sample_loc_type_bottom_field =
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ctx->chroma_sample_loc_type;
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sps->vui.chroma_loc_info_present_flag = 1;
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need_vui = 1;
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}
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if (ctx->tick_rate.num && ctx->tick_rate.den) {
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int num, den;
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av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den,
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UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX);
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sps->vui.vui_time_scale = num;
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sps->vui.vui_num_units_in_tick = den;
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sps->vui.vui_timing_info_present_flag = 1;
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need_vui = 1;
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if (ctx->num_ticks_poc_diff_one > 0) {
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sps->vui.vui_num_ticks_poc_diff_one_minus1 =
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ctx->num_ticks_poc_diff_one - 1;
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sps->vui.vui_poc_proportional_to_timing_flag = 1;
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} else if (ctx->num_ticks_poc_diff_one == 0) {
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sps->vui.vui_poc_proportional_to_timing_flag = 0;
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}
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}
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ret = h265_metadata_deduce_crop(bsf, sps, &crop_left, &crop_right,
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&crop_top, &crop_bottom);
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if (ret < 0)
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return ret;
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if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) {
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crop_unit_x = 1;
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crop_unit_y = 1;
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} else {
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crop_unit_x = 1 + (sps->chroma_format_idc < 3);
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crop_unit_y = 1 + (sps->chroma_format_idc < 2);
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}
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#define CROP(border, unit) do { \
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if (crop_ ## border >= 0) { \
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if (crop_ ## border % unit != 0) { \
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av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \
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"must be a multiple of %d.\n", #border, unit); \
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return AVERROR(EINVAL); \
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} \
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sps->conf_win_ ## border ## _offset = \
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crop_ ## border / unit; \
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sps->conformance_window_flag = 1; \
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} \
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} while (0)
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CROP(left, crop_unit_x);
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CROP(right, crop_unit_x);
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CROP(top, crop_unit_y);
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CROP(bottom, crop_unit_y);
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#undef CROP
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if (need_vui)
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sps->vui_parameters_present_flag = 1;
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h265_metadata_update_level(bsf, &sps->profile_tier_level.general_level_idc);
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return 0;
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}
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static int h265_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt,
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CodedBitstreamFragment *au)
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{
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H265MetadataContext *ctx = bsf->priv_data;
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int err, i;
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// If an AUD is present, it must be the first NAL unit.
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if (au->nb_units && au->units[0].type == HEVC_NAL_AUD) {
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if (ctx->aud == BSF_ELEMENT_REMOVE)
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ff_cbs_delete_unit(au, 0);
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} else {
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if (pkt && ctx->aud == BSF_ELEMENT_INSERT) {
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H265RawAUD *aud = &ctx->aud_nal;
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int pic_type = 0, temporal_id = 8, layer_id = 0;
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for (i = 0; i < au->nb_units; i++) {
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const H265RawNALUnitHeader *nal = au->units[i].content;
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if (!nal)
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continue;
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if (nal->nuh_temporal_id_plus1 < temporal_id + 1)
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temporal_id = nal->nuh_temporal_id_plus1 - 1;
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if (au->units[i].type <= HEVC_NAL_RSV_VCL31) {
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const H265RawSlice *slice = au->units[i].content;
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layer_id = nal->nuh_layer_id;
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if (slice->header.slice_type == HEVC_SLICE_B &&
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pic_type < 2)
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pic_type = 2;
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if (slice->header.slice_type == HEVC_SLICE_P &&
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pic_type < 1)
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pic_type = 1;
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}
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}
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aud->nal_unit_header = (H265RawNALUnitHeader) {
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.nal_unit_type = HEVC_NAL_AUD,
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.nuh_layer_id = layer_id,
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.nuh_temporal_id_plus1 = temporal_id + 1,
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};
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aud->pic_type = pic_type;
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err = ff_cbs_insert_unit_content(au, 0, HEVC_NAL_AUD, aud, NULL);
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if (err < 0) {
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av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
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return err;
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}
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}
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}
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if (ctx->level == LEVEL_AUTO && !ctx->level_guess)
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h265_metadata_guess_level(bsf, au);
|
|
|
|
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)
|
|
return err;
|
|
}
|
|
if (au->units[i].type == HEVC_NAL_SPS) {
|
|
err = h265_metadata_update_sps(bsf, au->units[i].content);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const CBSBSFType h265_metadata_type = {
|
|
.codec_id = AV_CODEC_ID_HEVC,
|
|
.fragment_name = "access unit",
|
|
.unit_name = "NAL unit",
|
|
.update_fragment = &h265_metadata_update_fragment,
|
|
};
|
|
|
|
static int h265_metadata_init(AVBSFContext *bsf)
|
|
{
|
|
return ff_cbs_bsf_generic_init(bsf, &h265_metadata_type);
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(H265MetadataContext, x)
|
|
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
|
|
static const AVOption h265_metadata_options[] = {
|
|
BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units",
|
|
aud, FLAGS),
|
|
|
|
{ "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, 5, FLAGS },
|
|
|
|
{ "tick_rate",
|
|
"Set VPS and VUI tick rate (time_scale / num_units_in_tick)",
|
|
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 },
|
|
{ "width", "Set width after crop",
|
|
OFFSET(width), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, HEVC_MAX_WIDTH, FLAGS },
|
|
{ "height", "Set height after crop",
|
|
OFFSET(height), AV_OPT_TYPE_INT,
|
|
{ .i64 = -1 }, -1, HEVC_MAX_HEIGHT, FLAGS },
|
|
|
|
{ "level", "Set level (tables A.6 and A.7)",
|
|
OFFSET(level), AV_OPT_TYPE_INT,
|
|
{ .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, .unit = "level" },
|
|
{ "auto", "Attempt to guess level from stream properties",
|
|
0, AV_OPT_TYPE_CONST,
|
|
{ .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" },
|
|
#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
|
|
{ .i64 = value }, .flags = FLAGS, .unit = "level"
|
|
{ LEVEL("1", 30) },
|
|
{ LEVEL("2", 60) },
|
|
{ LEVEL("2.1", 63) },
|
|
{ LEVEL("3", 90) },
|
|
{ LEVEL("3.1", 93) },
|
|
{ LEVEL("4", 120) },
|
|
{ LEVEL("4.1", 123) },
|
|
{ LEVEL("5", 150) },
|
|
{ LEVEL("5.1", 153) },
|
|
{ LEVEL("5.2", 156) },
|
|
{ LEVEL("6", 180) },
|
|
{ LEVEL("6.1", 183) },
|
|
{ LEVEL("6.2", 186) },
|
|
{ LEVEL("8.5", 255) },
|
|
#undef LEVEL
|
|
|
|
{ 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 FFBitStreamFilter ff_hevc_metadata_bsf = {
|
|
.p.name = "hevc_metadata",
|
|
.p.codec_ids = h265_metadata_codec_ids,
|
|
.p.priv_class = &h265_metadata_class,
|
|
.priv_data_size = sizeof(H265MetadataContext),
|
|
.init = &h265_metadata_init,
|
|
.close = &ff_cbs_bsf_generic_close,
|
|
.filter = &ff_cbs_bsf_generic_filter,
|
|
};
|