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| 1 | +/* |
| 2 | + * Copyright (c) 2023 Zhao Zhili <zhilizhao@tencent.com> |
| 3 | + * |
| 4 | + * This file is part of FFmpeg. |
| 5 | + * |
| 6 | + * FFmpeg is free software; you can redistribute it and/or |
| 7 | + * modify it under the terms of the GNU Lesser General Public |
| 8 | + * License as published by the Free Software Foundation; either |
| 9 | + * version 2.1 of the License, or (at your option) any later version. |
| 10 | + * |
| 11 | + * FFmpeg is distributed in the hope that it will be useful, |
| 12 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | + * Lesser General Public License for more details. |
| 15 | + * |
| 16 | + * You should have received a copy of the GNU Lesser General Public |
| 17 | + * License along with FFmpeg; if not, write to the Free Software |
| 18 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | + */ |
| 20 | + |
| 21 | +#include <VideoToolbox/VideoToolbox.h> |
| 22 | + |
| 23 | +#include "libavutil/hwcontext.h" |
| 24 | +#include "libavutil/hwcontext_videotoolbox.h" |
| 25 | +#include "libavutil/opt.h" |
| 26 | +#include "libavutil/pixdesc.h" |
| 27 | +#include "internal.h" |
| 28 | +#include "transpose.h" |
| 29 | + |
| 30 | +typedef struct TransposeVtContext { |
| 31 | + AVClass *class; |
| 32 | + |
| 33 | + VTPixelRotationSessionRef session; |
| 34 | + int dir; |
| 35 | + int passthrough; |
| 36 | +} TransposeVtContext; |
| 37 | + |
| 38 | +static av_cold int transpose_vt_init(AVFilterContext *avctx) |
| 39 | +{ |
| 40 | + TransposeVtContext *s = avctx->priv; |
| 41 | + int ret; |
| 42 | + |
| 43 | + ret = VTPixelRotationSessionCreate(kCFAllocatorDefault, &s->session); |
| 44 | + if (ret != noErr) { |
| 45 | + av_log(avctx, AV_LOG_ERROR, "Rotation session create failed, %d\n", ret); |
| 46 | + return AVERROR_EXTERNAL; |
| 47 | + } |
| 48 | + |
| 49 | + return 0; |
| 50 | +} |
| 51 | + |
| 52 | +static av_cold void transpose_vt_uninit(AVFilterContext *avctx) |
| 53 | +{ |
| 54 | + TransposeVtContext *s = avctx->priv; |
| 55 | + |
| 56 | + if (s->session) { |
| 57 | + VTPixelRotationSessionInvalidate(s->session); |
| 58 | + CFRelease(s->session); |
| 59 | + s->session = NULL; |
| 60 | + } |
| 61 | +} |
| 62 | + |
| 63 | +static int transpose_vt_filter_frame(AVFilterLink *link, AVFrame *in) |
| 64 | +{ |
| 65 | + int ret; |
| 66 | + AVFilterContext *ctx = link->dst; |
| 67 | + TransposeVtContext *s = ctx->priv; |
| 68 | + AVFilterLink *outlink = ctx->outputs[0]; |
| 69 | + CVPixelBufferRef src; |
| 70 | + CVPixelBufferRef dst; |
| 71 | + |
| 72 | + if (s->passthrough) |
| 73 | + return ff_filter_frame(outlink, in); |
| 74 | + |
| 75 | + AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| 76 | + if (!out) { |
| 77 | + ret = AVERROR(ENOMEM); |
| 78 | + goto fail; |
| 79 | + } |
| 80 | + |
| 81 | + ret = av_frame_copy_props(out, in); |
| 82 | + if (ret < 0) |
| 83 | + goto fail; |
| 84 | + |
| 85 | + src = (CVPixelBufferRef)in->data[3]; |
| 86 | + dst = (CVPixelBufferRef)out->data[3]; |
| 87 | + ret = VTPixelRotationSessionRotateImage(s->session, src, dst); |
| 88 | + if (ret != noErr) { |
| 89 | + av_log(ctx, AV_LOG_ERROR, "transfer image failed, %d\n", ret); |
| 90 | + ret = AVERROR_EXTERNAL; |
| 91 | + goto fail; |
| 92 | + } |
| 93 | + |
| 94 | + av_frame_free(&in); |
| 95 | + |
| 96 | + return ff_filter_frame(outlink, out); |
| 97 | + |
| 98 | +fail: |
| 99 | + av_frame_free(&in); |
| 100 | + av_frame_free(&out); |
| 101 | + return ret; |
| 102 | +} |
| 103 | + |
| 104 | +static int transpose_vt_config_output(AVFilterLink *outlink) |
| 105 | +{ |
| 106 | + int err; |
| 107 | + AVFilterContext *avctx = outlink->src; |
| 108 | + TransposeVtContext *s = avctx->priv; |
| 109 | + AVFilterLink *inlink = outlink->src->inputs[0]; |
| 110 | + CFStringRef rotation = kVTRotation_0; |
| 111 | + CFBooleanRef vflip = kCFBooleanFalse; |
| 112 | + CFBooleanRef hflip = kCFBooleanFalse; |
| 113 | + int swap_w_h = 0; |
| 114 | + |
| 115 | + if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) || |
| 116 | + (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) { |
| 117 | + av_log(avctx, AV_LOG_VERBOSE, |
| 118 | + "w:%d h:%d -> w:%d h:%d (passthrough mode)\n", |
| 119 | + inlink->w, inlink->h, inlink->w, inlink->h); |
| 120 | + return 0; |
| 121 | + } |
| 122 | + |
| 123 | + s->passthrough = TRANSPOSE_PT_TYPE_NONE; |
| 124 | + |
| 125 | + switch (s->dir) { |
| 126 | + case TRANSPOSE_CCLOCK_FLIP: |
| 127 | + rotation = kVTRotation_CCW90; |
| 128 | + vflip = kCFBooleanTrue; |
| 129 | + swap_w_h = 1; |
| 130 | + break; |
| 131 | + case TRANSPOSE_CCLOCK: |
| 132 | + rotation = kVTRotation_CCW90; |
| 133 | + swap_w_h = 1; |
| 134 | + break; |
| 135 | + case TRANSPOSE_CLOCK: |
| 136 | + rotation = kVTRotation_CW90; |
| 137 | + swap_w_h = 1; |
| 138 | + break; |
| 139 | + case TRANSPOSE_CLOCK_FLIP: |
| 140 | + rotation = kVTRotation_CW90; |
| 141 | + vflip = kCFBooleanTrue; |
| 142 | + swap_w_h = 1; |
| 143 | + break; |
| 144 | + case TRANSPOSE_REVERSAL: |
| 145 | + rotation = kVTRotation_180; |
| 146 | + break; |
| 147 | + case TRANSPOSE_HFLIP: |
| 148 | + hflip = kCFBooleanTrue; |
| 149 | + break; |
| 150 | + case TRANSPOSE_VFLIP: |
| 151 | + vflip = kCFBooleanTrue; |
| 152 | + break; |
| 153 | + default: |
| 154 | + av_log(avctx, AV_LOG_ERROR, "Failed to set direction to %d\n", s->dir); |
| 155 | + return AVERROR(EINVAL); |
| 156 | + } |
| 157 | + |
| 158 | + err = VTSessionSetProperty(s->session, kVTPixelRotationPropertyKey_Rotation, |
| 159 | + rotation); |
| 160 | + if (err != noErr) { |
| 161 | + av_log(avctx, AV_LOG_ERROR, "Set rotation property failed, %d\n", err); |
| 162 | + return AVERROR_EXTERNAL; |
| 163 | + } |
| 164 | + err = VTSessionSetProperty(s->session, kVTPixelRotationPropertyKey_FlipVerticalOrientation, |
| 165 | + vflip); |
| 166 | + if (err != noErr) { |
| 167 | + av_log(avctx, AV_LOG_ERROR, "Set vertical flip property failed, %d\n", err); |
| 168 | + return AVERROR_EXTERNAL; |
| 169 | + } |
| 170 | + err = VTSessionSetProperty(s->session, kVTPixelRotationPropertyKey_FlipHorizontalOrientation, |
| 171 | + hflip); |
| 172 | + if (err != noErr) { |
| 173 | + av_log(avctx, AV_LOG_ERROR, "Set horizontal flip property failed, %d\n", err); |
| 174 | + return AVERROR_EXTERNAL; |
| 175 | + } |
| 176 | + |
| 177 | + if (swap_w_h) { |
| 178 | + outlink->w = inlink->h; |
| 179 | + outlink->h = inlink->w; |
| 180 | + } |
| 181 | + |
| 182 | + return 0; |
| 183 | +} |
| 184 | + |
| 185 | +#define OFFSET(x) offsetof(TransposeVtContext, x) |
| 186 | +#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) |
| 187 | +static const AVOption transpose_vt_options[] = { |
| 188 | + { "dir", "set transpose direction", |
| 189 | + OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 6, FLAGS, "dir" }, |
| 190 | + { "cclock_flip", "rotate counter-clockwise with vertical flip", |
| 191 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
| 192 | + { "clock", "rotate clockwise", |
| 193 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" }, |
| 194 | + { "cclock", "rotate counter-clockwise", |
| 195 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" }, |
| 196 | + { "clock_flip", "rotate clockwise with vertical flip", |
| 197 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" }, |
| 198 | + { "reversal", "rotate by half-turn", |
| 199 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_REVERSAL }, .flags=FLAGS, .unit = "dir" }, |
| 200 | + { "hflip", "flip horizontally", |
| 201 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_HFLIP }, .flags=FLAGS, .unit = "dir" }, |
| 202 | + { "vflip", "flip vertically", |
| 203 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_VFLIP }, .flags=FLAGS, .unit = "dir" }, |
| 204 | + |
| 205 | + { "passthrough", "do not apply transposition if the input matches the specified geometry", |
| 206 | + OFFSET(passthrough), AV_OPT_TYPE_INT, { .i64=TRANSPOSE_PT_TYPE_NONE }, 0, INT_MAX, FLAGS, "passthrough" }, |
| 207 | + { "none", "always apply transposition", |
| 208 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_PT_TYPE_NONE }, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
| 209 | + { "portrait", "preserve portrait geometry", |
| 210 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_PT_TYPE_PORTRAIT }, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
| 211 | + { "landscape", "preserve landscape geometry", |
| 212 | + 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_PT_TYPE_LANDSCAPE }, INT_MIN, INT_MAX, FLAGS, "passthrough" }, |
| 213 | + |
| 214 | + { NULL } |
| 215 | +}; |
| 216 | + |
| 217 | +AVFILTER_DEFINE_CLASS(transpose_vt); |
| 218 | + |
| 219 | +static const AVFilterPad transpose_vt_inputs[] = { |
| 220 | + { |
| 221 | + .name = "default", |
| 222 | + .type = AVMEDIA_TYPE_VIDEO, |
| 223 | + .filter_frame = &transpose_vt_filter_frame, |
| 224 | + }, |
| 225 | +}; |
| 226 | + |
| 227 | +static const AVFilterPad transpose_vt_outputs[] = { |
| 228 | + { |
| 229 | + .name = "default", |
| 230 | + .type = AVMEDIA_TYPE_VIDEO, |
| 231 | + .config_props = &transpose_vt_config_output, |
| 232 | + }, |
| 233 | +}; |
| 234 | + |
| 235 | +const AVFilter ff_vf_transpose_vt = { |
| 236 | + .name = "transpose_vt", |
| 237 | + .description = NULL_IF_CONFIG_SMALL("Transpose Videotoolbox frames"), |
| 238 | + .priv_size = sizeof(TransposeVtContext), |
| 239 | + .init = transpose_vt_init, |
| 240 | + .uninit = transpose_vt_uninit, |
| 241 | + FILTER_INPUTS(transpose_vt_inputs), |
| 242 | + FILTER_OUTPUTS(transpose_vt_outputs), |
| 243 | + FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VIDEOTOOLBOX), |
| 244 | + .priv_class = &transpose_vt_class, |
| 245 | + .flags = AVFILTER_FLAG_HWDEVICE, |
| 246 | +}; |