* [FFmpeg-devel] [PATCH 1/5] lavc/libaribcaption.c: add ARIB caption decoder using libaribcaption
2022-05-21 10:37 [FFmpeg-devel] [PATCH 0/5] add ARIB caption decoder using libaribcaption TADANO Tokumei
@ 2022-05-21 10:37 ` TADANO Tokumei
2022-05-21 10:37 ` [FFmpeg-devel] [PATCH 2/5] lavc/allcodecs.c: add aribcaption_decoder TADANO Tokumei
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: TADANO Tokumei @ 2022-05-21 10:37 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: TADANO Tokumei
This patch add another ARIB caption decoder using libaribcaption
external library: https://github.com/xqq/libaribcaption
The library decodes subtitles of ISDB-based TV broadcasting.
It is not only for Japanese ARIB STD-B24 caption, but also for
Brazilian ABNT NBR 15606-1 and Philippines version of ISDB-T.
Unlike libaribb24, it supports 3 types of subtitle outputs:
* text: plain text
* ass: ASS formatted text
* bitmap: bitmap image
Default subtitle type is ass as same as libaribb24.
Some present players (e.g., mpv) expect ASS format for ARIB caption.
Subtitle type can be specified by `-sub_type` option.
For example, MPEG-TS file with ARIB caption can be displayed by
ffplay tool like:
ffplay -sub_type bitmap mpeg.ts
Since some players (e.g., mpv) can't handle multi-rectangle ASS
subtitle properly, default behavior is all the texts are displayed
in a single-rectangle at a time. It causes some texts may not be
displayed at expected position as described in ARIB STD-B24.
If a player can handle multi-rectangle ASS subtitle and you prefer
more suitable positioning, set `-ass_workaround false` option or
define `ASS_WORKAROUND=0` at compilation.
Signed-off-by: TADANO Tokumei <aimingoff@pc.nifty.jp>
---
libavcodec/libaribcaption.c | 1097 +++++++++++++++++++++++++++++++++++
1 file changed, 1097 insertions(+)
create mode 100644 libavcodec/libaribcaption.c
diff --git a/libavcodec/libaribcaption.c b/libavcodec/libaribcaption.c
new file mode 100644
index 0000000000..1706503dce
--- /dev/null
+++ b/libavcodec/libaribcaption.c
@@ -0,0 +1,1097 @@
+/*
+ * ARIB STD-B24 caption decoder using the libaribcaption library
+ * Copyright (c) 2022 TADANO Tokumei
+ *
+ * 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 "avcodec.h"
+#include "codec_internal.h"
+#include "internal.h"
+#include "libavcodec/ass.h"
+#include "libavutil/avstring.h"
+#include "libavutil/avutil.h"
+#include "libavutil/thread.h"
+#include "libavutil/log.h"
+#include "libavutil/opt.h"
+
+#include <aribcaption/aribcaption.h>
+
+#define ARIBC_BPRINT_SIZE_INIT 64
+#define ARIBC_BPRINT_SIZE_MAX (8 * 1024)
+#define ARIBC_ALPHA_MAX_NUM 4
+#define ARIBC_ALPHA_DEFAULT_FRONT 0xFF
+#define ARIBC_ALPHA_DEFAULT_BACK 0x80
+
+#define ARIBCC_COLOR_RGB(c) ((c) & 0xFFFFFF)
+#define ARIBCC_COLOR_DIFF_RGB(c1,c2) (((c1) ^ (c2)) & 0x00FFFFFF)
+#define ARIBCC_COLOR_DIFF_A(c1,c2) (((c1) ^ (c2)) & 0xFF000000)
+
+#define CLUT_RGBA(r,g,b,a) (((unsigned)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define CLUT_A(c) (((c) >> 24) & 0xFF)
+#define CLUT_R(c) (((c) >> 16) & 0xFF)
+#define CLUT_G(c) (((c) >> 8) & 0xFF)
+#define CLUT_B(c) ( (c) & 0xFF)
+
+#define ARIBCC_COLOR_TO_CLUT_RGBA(c,a) (((ARIBCC_COLOR_A(c) ? ARIBCC_COLOR_A(c) : (a)) << 24) | \
+ (ARIBCC_COLOR_R(c) << 16) | \
+ (ARIBCC_COLOR_G(c) << 8) | \
+ (ARIBCC_COLOR_B(c)))
+
+typedef struct ARIBCaptionContext {
+ AVClass *class;
+ AVCodecContext *avctx;
+ const AVPacket *avpkt;
+ AVSubtitle *sub;
+
+ aribcc_context_t *context;
+ aribcc_decoder_t *decoder;
+ aribcc_renderer_t *renderer;
+
+ enum AVSubtitleType subtitle_type;
+ bool ass_workaround;
+ char *font_name;
+ bool replace_fullwidth_ascii;
+ bool force_stroke_text;
+ bool ignore_background;
+ bool ignore_ruby;
+ bool fadeout;
+ float stroke_width;
+ bool replace_drcs;
+ aribcc_textrenderer_type_t rendering_backend;
+
+ int64_t pts;
+ AVRational time_base;
+ int plane_width;
+ int plane_height;
+ int frame_width;
+ int frame_height;
+ int font_size;
+ int charstyle;
+ int border_style;
+ int readorder;
+
+ aribcc_caption_t caption;
+ aribcc_render_result_t render_result;
+ uint32_t *clut;
+ int clut_idx;
+ int clut_overflow;
+ uint8_t clut_alpha[ARIBC_ALPHA_MAX_NUM];
+} ARIBCaptionContext;
+
+static void hex_dump_debug(void *ctx, const char *buf, int buf_size)
+{
+ int i;
+
+ for (i=0; i < buf_size; i++) {
+ ff_dlog(ctx, "%02hhx ", buf[i]);
+ if (i % 16 == 15)
+ ff_dlog(ctx, "\n");
+ }
+ if (i % 16)
+ ff_dlog(ctx, "\n");
+}
+
+static void logcat_callback(aribcc_loglevel_t level, const char* message, void* userdata)
+{
+ ARIBCaptionContext *ctx = userdata;
+ int lvl;
+
+ if (ctx->decoder != NULL) {
+ switch (level) {
+ case ARIBCC_LOGLEVEL_ERROR:
+ lvl = AV_LOG_ERROR;
+ break;
+ case ARIBCC_LOGLEVEL_WARNING:
+ lvl = AV_LOG_WARNING;
+ break;
+ default:
+ lvl = AV_LOG_INFO;
+ }
+
+ av_log(ctx, lvl, "%s\n", message);
+ }
+}
+
+static void estimate_video_frame_size(ARIBCaptionContext *ctx)
+{
+ if (ctx->avctx->width > 0 && ctx->avctx->height > 0) {
+ ctx->frame_width = ctx->avctx->width;
+ ctx->frame_height = ctx->avctx->height;
+ } else if (ctx->plane_width == 960) {
+ /* ARIB TR-B14 Fascicle 2 Volume 3 [Section 2] 4.3.1 */
+ /* ARIB TR-B14 Fascicle 2 Volume 3 [Section 2] Appendix-4 */
+ ctx->frame_width = 1440;
+ ctx->frame_height = 1080;
+ } else {
+ ctx->frame_width = ctx->plane_width;
+ ctx->frame_height = ctx->plane_height;
+ }
+}
+
+static void clut_set_alpha(ARIBCaptionContext *ctx, uint8_t a)
+{
+ int i;
+
+ for (i = 0; i < ARIBC_ALPHA_MAX_NUM; i++) {
+ if (ctx->clut_alpha[i] == 0) {
+ ctx->clut_alpha[i] = a;
+ return;
+ }
+ if (ctx->clut_alpha[i] == a)
+ return;
+ }
+ return;
+}
+
+static uint8_t clut_find_nearlest_alpha(ARIBCaptionContext *ctx, uint8_t a)
+{
+ int i, j, d;
+
+ if (a == 0)
+ return a;
+ d = 256;
+ j = 0;
+ for (i = 0; i < ARIBC_ALPHA_MAX_NUM; i++) {
+ if (ctx->clut_alpha[i] == a)
+ return a;
+ if (ctx->clut_alpha[i] == 0)
+ break;
+ if (abs((int)a - (int)ctx->clut_alpha[i]) < d) {
+ d = abs((int)a - (int)ctx->clut_alpha[i]);
+ j = i;
+ }
+ }
+ return ctx->clut_alpha[j];
+}
+
+static int clut_find(ARIBCaptionContext *ctx, uint32_t rgba)
+{
+ int i;
+
+ for (i = 0; i < ctx->clut_idx; i++) {
+ if (ctx->clut[i] == rgba)
+ return i;
+ }
+ return -1;
+}
+
+static inline int clut_color_distance(uint32_t rgba1, uint32_t rgba2)
+{
+ return abs((int)CLUT_R(rgba1) - (int)CLUT_R(rgba2)) +
+ abs((int)CLUT_G(rgba1) - (int)CLUT_G(rgba2)) +
+ abs((int)CLUT_B(rgba1) - (int)CLUT_B(rgba2));
+}
+
+static uint8_t clut_pick_or_set(ARIBCaptionContext *ctx, int r, int g, int b, int a)
+{
+ int c, i, d, d_min;
+ uint32_t rgba;
+
+ a = clut_find_nearlest_alpha(ctx, a);
+ if (a == 0)
+ return 0; /* transparent */
+ rgba = CLUT_RGBA(r,g,b,a);
+
+ d_min = 256 * 3;
+ c = 0;
+ for (i = 0; i < ctx->clut_idx; i++) {
+ if (ctx->clut[i] == rgba)
+ return i;
+ if (CLUT_A(ctx->clut[i]) != a)
+ continue;
+ d = clut_color_distance(ctx->clut[i], rgba);
+ if (d < d_min) {
+ d_min = d;
+ c = i;
+ }
+ }
+ if (d_min > 3) {
+ if (ctx->clut_idx >= AVPALETTE_COUNT)
+ ctx->clut_overflow++;
+ else {
+ c = ctx->clut_idx;
+ ctx->clut[ctx->clut_idx++] = rgba;
+ }
+ }
+ return c;
+}
+
+/* initialiaze CLUT with each character colors */
+static void clut_init(ARIBCaptionContext *ctx, aribcc_caption_region_t *region)
+{
+ aribcc_color_t text_color, back_color, stroke_color;
+ uint32_t rgba;
+
+ ctx->clut[0] = CLUT_RGBA(0,0,0,0); /* transparent */
+ ctx->clut_alpha[0] = 0xFF;
+ ctx->clut_idx = 1;
+ ctx->clut_overflow = 0;
+ text_color = region->chars[0].text_color;
+ back_color = region->chars[0].back_color;
+ stroke_color = region->chars[0].stroke_color;
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(text_color, ARIBC_ALPHA_DEFAULT_FRONT);
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(back_color, ARIBC_ALPHA_DEFAULT_BACK);
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(stroke_color, ARIBC_ALPHA_DEFAULT_FRONT);
+ if (clut_find(ctx, rgba) < 0) {
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ }
+
+ for (int i = 1; i < region->char_count; i++) {
+ if (region->chars[i].text_color != text_color) {
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].text_color,
+ ARIBC_ALPHA_DEFAULT_FRONT);
+ if (clut_find(ctx, rgba) < 0) {
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ }
+ }
+ if (region->chars[i].back_color != back_color) {
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].back_color,
+ ARIBC_ALPHA_DEFAULT_BACK);
+ if (clut_find(ctx, rgba) < 0) {
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ }
+ }
+ if (region->chars[i].stroke_color != stroke_color) {
+ rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].stroke_color,
+ ARIBC_ALPHA_DEFAULT_FRONT);
+ if (clut_find(ctx, rgba) < 0) {
+ ctx->clut[ctx->clut_idx++] = rgba;
+ clut_set_alpha(ctx, CLUT_A(rgba));
+ }
+ }
+ }
+}
+
+/**
+ * aribcaption_trans_{bitmap|ass|text}_subtitle()
+ *
+ * Transfer decoded subtitle to AVSubtitle with corresponding subtitle type.
+ *
+ * @param ctx pointer to the ARIBCaptionContext
+ * @return > 0 number of rectangles to be displayed
+ * = 0 no subtitle
+ * < 0 error code
+ */
+static int aribcaption_trans_bitmap_subtitle(ARIBCaptionContext *ctx)
+{
+ int ret = 0;
+ AVSubtitle *sub = ctx->sub;
+ int status, rect_idx;
+ int old_width = ctx->frame_width;
+ int old_height = ctx->frame_height;
+
+ if (ctx->caption.plane_width > 0 && ctx->caption.plane_height > 0) {
+ ctx->plane_width = ctx->caption.plane_width;
+ ctx->plane_height = ctx->caption.plane_height;
+ }
+ estimate_video_frame_size(ctx);
+ if (ctx->frame_width != old_width || ctx->frame_height != old_height) {
+ if (!aribcc_renderer_set_frame_size(ctx->renderer,
+ ctx->avctx->width, ctx->avctx->height)) {
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_renderer_set_frame_size() returned with error.\n");
+ return AVERROR_EXTERNAL;
+ }
+ }
+
+ status = aribcc_renderer_append_caption(ctx->renderer, &ctx->caption);
+ if (!status) {
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_renderer_append_caption() returned with error.\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ status = aribcc_renderer_render(ctx->renderer, ctx->pts, &ctx->render_result);
+ switch (status) {
+ case ARIBCC_RENDER_STATUS_GOT_IMAGE:
+ break;
+
+ case ARIBCC_RENDER_STATUS_GOT_IMAGE_UNCHANGED:
+ aribcc_render_result_cleanup(&ctx->render_result);
+ ff_dlog(ctx, "got image unchanged\n");
+ return 0;
+
+ case ARIBCC_RENDER_STATUS_NO_IMAGE:
+ ff_dlog(ctx, "no image\n");
+ return 0;
+
+ case ARIBCC_RENDER_STATUS_ERROR:
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_renderer_render() returned with error.\n");
+ return AVERROR_EXTERNAL;
+
+ default:
+ aribcc_render_result_cleanup(&ctx->render_result);
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_renderer_render() returned unknown status: %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ if (!ctx->render_result.image_count || ctx->render_result.images == NULL) {
+ aribcc_render_result_cleanup(&ctx->render_result);
+ ff_dlog(ctx, "no image (%d)\n", ctx->render_result.image_count);
+ return 0;
+ }
+
+ sub->format = 0; /* graphic */
+ sub->rects = av_calloc(ctx->render_result.image_count, sizeof(*sub->rects));
+ if (!sub->rects) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ for (int i = 0; i < ctx->render_result.image_count; i++) {
+ sub->rects[i] = av_mallocz(sizeof(*sub->rects[i]));
+ if (!sub->rects[i]) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ }
+
+ for (rect_idx = 0; rect_idx < ctx->caption.region_count; rect_idx++) {
+ AVSubtitleRect *rect = ctx->sub->rects[rect_idx];
+ aribcc_image_t *image = &ctx->render_result.images[rect_idx];
+ int w, h, src_idx, dst_idx;
+
+ clut_init(ctx, &ctx->caption.regions[rect_idx]);
+
+ rect->data[0] = av_mallocz(image->bitmap_size / 4);
+ if (!rect->data[0]) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ src_idx = 0;
+ dst_idx = 0;
+ for (h = 0; h < image->height; h++) {
+ for (w = 0; w < image->width; w++) {
+ int r, g, b, a;
+ r = image->bitmap[src_idx++];
+ g = image->bitmap[src_idx++];
+ b = image->bitmap[src_idx++];
+ a = image->bitmap[src_idx++];
+ if (src_idx > image->bitmap_size) {
+ av_log(ctx, AV_LOG_ERROR, "Bug: unexpectedly reach end of image\n");
+ ret = AVERROR_EXTERNAL;
+ goto fail;
+ }
+ rect->data[0][dst_idx++] = clut_pick_or_set(ctx, r, g, b, a);
+ }
+ if (w * 4 < image->stride) {
+ src_idx += image->stride - w * 4;
+ dst_idx += image->stride / 4 - w;
+ }
+ }
+ rect->data[1] = av_memdup(ctx->clut, AVPALETTE_SIZE);
+ if (!rect->data[1]) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ ff_dlog(ctx, "BITMAP subtitle%s (%d,%d) %d(%d) x %d [%d]: %d colors\n",
+ (ctx->caption.regions[rect_idx].is_ruby) ? " (ruby)" : "",
+ image->dst_x, image->dst_y,
+ image->width, image->stride / 4, image->height,
+ rect_idx, ctx->clut_idx);
+ if (ctx->clut_overflow)
+ av_log(ctx, AV_LOG_WARNING, "CLUT overflow (%d).\n", ctx->clut_overflow);
+
+ rect->x = image->dst_x;
+ rect->y = image->dst_y;
+ rect->w = image->width;
+ rect->h = image->height;
+ rect->type = SUBTITLE_BITMAP;
+ rect->linesize[0] = image->stride / 4;
+ rect->nb_colors = 256;
+ }
+ sub->num_rects = rect_idx;
+
+ return rect_idx;
+
+fail:
+ if (sub->rects) {
+ for (int i = 0; i < ctx->caption.region_count; i++) {
+ if (sub->rects[i]) {
+ av_freep(&sub->rects[i]->data[0]);
+ av_freep(&sub->rects[i]->data[1]);
+ av_freep(&sub->rects[i]);
+ }
+ }
+ av_freep(&sub->rects);
+ }
+ sub->num_rects = 0;
+
+ return ret;
+}
+
+static int set_ass_header(ARIBCaptionContext *ctx)
+{
+ AVCodecContext *avctx = ctx->avctx;
+ int outline, shadow;
+
+ if (ctx->border_style == 4) {
+ outline = 0;
+ shadow = 4;
+ } else {
+ outline = 1;
+ shadow = 0;
+ }
+ if (ctx->force_stroke_text)
+ outline = (int)(ctx->stroke_width * 4.0 / 3.0);
+
+ if (avctx->subtitle_header)
+ av_freep(&avctx->subtitle_header);
+ avctx->subtitle_header = av_asprintf(
+ "[Script Info]\r\n"
+ "ScriptType: v4.00+\r\n"
+ "PlayResX: %d\r\n"
+ "PlayResY: %d\r\n"
+ "WrapStyle: 2\r\n" /* 2: no word wrapping */
+ "\r\n"
+
+ "[V4+ Styles]\r\n"
+ "Format: Name, "
+ "Fontname, Fontsize, "
+ "PrimaryColour, SecondaryColour, OutlineColour, BackColour, "
+ "Bold, Italic, Underline, StrikeOut, "
+ "ScaleX, ScaleY, "
+ "Spacing, Angle, "
+ "BorderStyle, Outline, Shadow, "
+ "Alignment, MarginL, MarginR, MarginV, "
+ "Encoding\r\n"
+
+ "Style: "
+ "Default," /* Name */
+ "%s,%d," /* Font{name,size} */
+ "&H%x,&H%x,&H%x,&H%x," /* {Primary,Secondary,Outline,Back}Colour */
+ "%d,%d,%d,0," /* Bold, Italic, Underline, StrikeOut */
+ "100,100," /* Scale{X,Y} */
+ "0,0," /* Spacing, Angle */
+ "%d,%d,%d," /* BorderStyle, Outline, Shadow */
+ "%d,10,10,10," /* Alignment, Margin[LRV] */
+ "0\r\n" /* Encoding */
+ "\r\n"
+
+ "[Events]\r\n"
+ "Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text\r\n",
+ ctx->plane_width, ctx->plane_height,
+ ctx->font_name, ctx->font_size,
+ ASS_DEFAULT_COLOR, ASS_DEFAULT_COLOR,
+ ASS_DEFAULT_BACK_COLOR, ASS_DEFAULT_BACK_COLOR,
+ -ASS_DEFAULT_BOLD, -ASS_DEFAULT_ITALIC, -ASS_DEFAULT_UNDERLINE,
+ ctx->border_style, outline, shadow, ASS_DEFAULT_ALIGNMENT);
+
+ if (!avctx->subtitle_header)
+ return AVERROR(ENOMEM);
+ avctx->subtitle_header_size = strlen(avctx->subtitle_header);
+ return 0;
+}
+
+static void set_ass_color(AVBPrint *buf, int color_num,
+ aribcc_color_t new_color, aribcc_color_t old_color)
+{
+ if (ARIBCC_COLOR_DIFF_RGB(new_color, old_color))
+ av_bprintf(buf, "{\\%dc&H%06x&}", color_num,
+ ARIBCC_COLOR_RGB(new_color));
+ if (ARIBCC_COLOR_DIFF_A(new_color, old_color) && ARIBCC_COLOR_A(new_color))
+ av_bprintf(buf, "{\\%da&H%02x&}", color_num,
+ ARIBCC_COLOR_A(new_color));
+}
+
+static int aribcaption_trans_ass_subtitle(ARIBCaptionContext *ctx)
+{
+ AVSubtitle *sub = ctx->sub;
+ AVBPrint buf;
+ int ret = 0, rect_idx;
+
+ if (ctx->caption.plane_width > 0 && ctx->caption.plane_height > 0 &&
+ (ctx->caption.plane_width != ctx->plane_width ||
+ ctx->caption.plane_height != ctx->plane_height)) {
+ if ((ret = set_ass_header(ctx)) < 0)
+ return ret;
+ ctx->plane_width = ctx->caption.plane_width;
+ ctx->plane_height = ctx->caption.plane_height;
+ }
+
+ sub->format = 1; /* text */
+ if (ctx->caption.region_count == 0) {
+ /* clear previous caption for indefinite duration */
+ ff_ass_add_rect(sub, "{\\r}", ctx->readorder++, 0, NULL, NULL);
+ return 1;
+ }
+
+ av_bprint_init(&buf, ARIBC_BPRINT_SIZE_INIT, ARIBC_BPRINT_SIZE_MAX);
+
+ if (ctx->ass_workaround) {
+ int x, y;
+ x = ctx->plane_width;
+ y = ctx->plane_height;
+ for (int i = 0; i < ctx->caption.region_count; i++) {
+ if (ctx->caption.regions[i].x < x)
+ x = ctx->caption.regions[i].x;
+ if (ctx->caption.regions[i].y < y)
+ y = ctx->caption.regions[i].y;
+ }
+ av_bprintf(&buf, "{\\an4}");
+ if (x > 0 || y >0)
+ av_bprintf(&buf, "{\\pos(%d,%d)}", x, y);
+ }
+
+ rect_idx = 0;
+ for (int i = 0; i < ctx->caption.region_count; i++) {
+ aribcc_caption_region_t *region = &ctx->caption.regions[i];
+ aribcc_color_t text_color = ARIBCC_MAKE_RGBA(0xFF, 0xFF, 0xFF,
+ ARIBC_ALPHA_DEFAULT_FRONT);
+ aribcc_color_t stroke_color = ARIBCC_MAKE_RGBA(0, 0, 0,
+ ARIBC_ALPHA_DEFAULT_FRONT);
+ aribcc_color_t back_color = ARIBCC_MAKE_RGBA(0, 0, 0,
+ ARIBC_ALPHA_DEFAULT_BACK);
+ aribcc_charstyle_t charstyle = ctx->charstyle;
+ int char_width = ctx->font_size;
+ int char_height = ctx->font_size;
+ int char_horizontal_spacing = 0;
+
+ if (region->is_ruby && ctx->ignore_ruby)
+ continue;
+
+ if (!ctx->ass_workaround) {
+ av_bprint_clear(&buf);
+ av_bprintf(&buf, "{\\an4}");
+ if (region->x != 0 || region->y != 0)
+ av_bprintf(&buf, "{\\pos(%d,%d)}", region->x, region->y);
+ }
+ if (ctx->fadeout)
+ av_bprintf(&buf, "{\\fad(0,500)}");
+ if (region->is_ruby)
+ av_bprintf(&buf, "{\\fs%d}", char_height / 2);
+
+ for (int j = 0; j < region->char_count; j++) {
+ aribcc_caption_char_t *ch = ®ion->chars[j];
+
+ if (ch->char_horizontal_spacing != char_horizontal_spacing) {
+ av_bprintf(&buf, "{\\fsp%d}", (region->is_ruby) ?
+ ch->char_horizontal_spacing / 2 :
+ ch->char_horizontal_spacing);
+ char_horizontal_spacing = ch->char_horizontal_spacing;
+ }
+ if (ch->char_width != char_width) {
+ av_bprintf(&buf, "{\\fscx%"PRId64"}",
+ av_rescale(ch->char_width, 100, ctx->font_size));
+ char_width = ch->char_width;
+ }
+ if (ch->char_height != char_height) {
+ av_bprintf(&buf, "{\\fscy%"PRId64"}",
+ av_rescale(ch->char_height, 100, ctx->font_size));
+ char_height = ch->char_height;
+ }
+ if (ch->style != charstyle) {
+ aribcc_charstyle_t diff = ch->style ^ charstyle;
+ if (diff & ARIBCC_CHARSTYLE_STROKE) {
+ if (charstyle & ARIBCC_CHARSTYLE_STROKE) {
+ if (ctx->force_stroke_text)
+ av_bprintf(&buf, "{\\bord%d}",
+ (int)(ctx->stroke_width * 4.0 / 3.0));
+ else
+ av_bprintf(&buf, "{\\bord0}");
+ } else
+ av_bprintf(&buf, "{\\bord3}");
+ }
+ if (diff & ARIBCC_CHARSTYLE_BOLD) {
+ if (charstyle & ARIBCC_CHARSTYLE_BOLD)
+ av_bprintf(&buf, "{\\b0}");
+ else
+ av_bprintf(&buf, "{\\b1}");
+ }
+ if (diff & ARIBCC_CHARSTYLE_ITALIC) {
+ if (charstyle & ARIBCC_CHARSTYLE_ITALIC)
+ av_bprintf(&buf, "{\\i0}");
+ else
+ av_bprintf(&buf, "{\\i1}");
+ }
+ if (diff & ARIBCC_CHARSTYLE_UNDERLINE) {
+ if (charstyle & ARIBCC_CHARSTYLE_UNDERLINE)
+ av_bprintf(&buf, "{\\u0}");
+ else
+ av_bprintf(&buf, "{\\u1}");
+ }
+ charstyle = ch->style;
+ }
+ if (ch->text_color != text_color) {
+ set_ass_color(&buf, 1, ch->text_color, text_color);
+ text_color = ch->text_color;
+ }
+ if (ch->stroke_color != stroke_color) {
+ set_ass_color(&buf, 3, ch->stroke_color, stroke_color);
+ stroke_color = ch->stroke_color;
+ }
+ if (ch->back_color != back_color) {
+ if (ctx->border_style == 4)
+ set_ass_color(&buf, 4, ch->back_color, back_color);
+ else
+ set_ass_color(&buf, 3, ch->back_color, back_color);
+ back_color = ch->back_color;
+ }
+ if (region->chars[j].type == ARIBCC_CHARTYPE_DRCS)
+ av_bprintf(&buf, "\xe3\x80\x93"); /* "〓" */
+ else
+ ff_ass_bprint_text_event(&buf, ch->u8str, strlen(ch->u8str), "", 0);
+ }
+ av_bprintf(&buf, "{\\r}%s",
+ (i + 1 < ctx->caption.region_count) ? "\\N" : "");
+
+ if (ctx->ass_workaround) {
+ ff_dlog(ctx, "ASS subtitle%s (%d,%d) %dx%d [%d]\n",
+ (region->is_ruby) ? " (ruby)" : "",
+ region->x, region->y, region->width, region->height,
+ rect_idx);
+ } else {
+ if (!av_bprint_is_complete(&buf)) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ ff_dlog(ctx, "ASS subtitle%s (%d,%d) %dx%d [%d]: %s\n",
+ (region->is_ruby) ? " (ruby)" : "",
+ region->x, region->y, region->width, region->height,
+ rect_idx, buf.str);
+
+ ret = ff_ass_add_rect(sub, buf.str, ctx->readorder++, 0 , NULL, NULL);
+ if (ret != 0)
+ goto fail;
+ rect_idx++;
+ }
+ }
+ if (ctx->ass_workaround) {
+ if (!av_bprint_is_complete(&buf)) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ ff_dlog(ctx, "ASS subtitle: %s\n", buf.str);
+
+ ret = ff_ass_add_rect(sub, buf.str, ctx->readorder++, 0 , NULL, NULL);
+ if (ret != 0)
+ goto fail;
+ rect_idx++;
+ }
+
+ av_bprint_finalize(&buf, NULL);
+ return rect_idx;
+
+fail:
+ if (sub->rects) {
+ for (int i = 0; i < ctx->caption.region_count; i++) {
+ if (sub->rects[i]) {
+ av_freep(&sub->rects[i]->ass);
+ av_freep(&sub->rects[i]);
+ }
+ }
+ av_freep(&sub->rects);
+ }
+ sub->num_rects = 0;
+ av_bprint_finalize(&buf, NULL);
+
+ return ret;
+}
+
+static int aribcaption_trans_text_subtitle(ARIBCaptionContext *ctx)
+{
+ AVSubtitle *sub = ctx->sub;
+ AVSubtitleRect *rect;
+ int ret = 0;
+ const char *text;
+
+ sub->rects = av_calloc(ctx->caption.region_count, sizeof(*sub->rects));
+ if (!sub->rects) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ sub->num_rects = 1;
+
+ sub->rects[0] = av_mallocz(sizeof(*sub->rects[0]));
+ if (!sub->rects[0]) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ rect = sub->rects[0];
+
+ if (ctx->caption.region_count == 0) {
+ text = ""; /* clear previous caption */
+ } else {
+ text = ctx->caption.text;
+ ff_dlog(ctx, "TEXT subtitle: %s\n", text);
+ }
+ rect->text = av_strdup(text);
+ if (!rect->text) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ sub->format = 1; /* text */
+ rect->type = SUBTITLE_TEXT;
+
+ return 1;
+
+fail:
+ if (sub->rects) {
+ rect = sub->rects[0];
+ if (rect) {
+ av_freep(&rect->text);
+ av_freep(&rect);
+ }
+ av_freep(&sub->rects);
+ }
+ sub->num_rects = 0;
+
+ return ret;
+}
+
+static int aribcaption_decode(AVCodecContext *avctx, AVSubtitle *sub,
+ int *got_sub_ptr, const AVPacket *avpkt)
+{
+ ARIBCaptionContext *ctx = avctx->priv_data;
+ int status;
+
+ ff_dlog(ctx, "ARIB caption packet pts=%"PRIx64":\n", avpkt->pts);
+ if (sub->num_rects) {
+ avpriv_request_sample(ctx, "Different Version of Segment asked Twice");
+ return AVERROR_PATCHWELCOME;
+ }
+ hex_dump_debug(ctx, avpkt->data, avpkt->size);
+
+ ctx->sub = sub;
+ ctx->avpkt = avpkt;
+ ctx->time_base = avctx->pkt_timebase;
+ if (ctx->time_base.num <= 0 || ctx->time_base.den <= 0) {
+ av_log(ctx, AV_LOG_VERBOSE, "No timebase set. assuming 90kHz.\n");
+ ctx->time_base = av_make_q(1, 90000);
+ }
+ if (avpkt->pts == AV_NOPTS_VALUE)
+ ctx->pts = ARIBCC_PTS_NOPTS;
+ else
+ ctx->pts = av_rescale_q(avpkt->pts, ctx->time_base, (AVRational){1, 1000});
+
+ status = aribcc_decoder_decode(ctx->decoder, avpkt->data, avpkt->size,
+ ctx->pts, &ctx->caption);
+ if (status == ARIBCC_DECODE_STATUS_ERROR) {
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_decoder_decode() returned with error.\n");
+ return AVERROR(EAGAIN);
+ }
+ if (status == ARIBCC_DECODE_STATUS_NO_CAPTION) {
+ ff_dlog(ctx, "No caption.\n");
+ return avpkt->size;
+ } else {
+ ff_dlog(ctx, "type=%02x, flags=%x, lang=%03x\n",
+ ctx->caption.type, ctx->caption.flags, ctx->caption.iso6392_language_code);
+ ff_dlog(ctx, "region count = %d, start=%d.%d, duration=%d.%d\n",
+ ctx->caption.region_count,
+ (int)(ctx->caption.pts / 1000), (int)(ctx->caption.pts % 1000),
+ (int)((ctx->caption.wait_duration == ARIBCC_DURATION_INDEFINITE) ?
+ -1 : ctx->caption.wait_duration / 1000),
+ (int)((ctx->caption.wait_duration == ARIBCC_DURATION_INDEFINITE) ?
+ 0 : ctx->caption.wait_duration % 1000));
+ }
+
+ switch (ctx->subtitle_type) {
+ case SUBTITLE_TEXT:
+ status = aribcaption_trans_text_subtitle(ctx);
+ break;
+
+ case SUBTITLE_ASS:
+ status = aribcaption_trans_ass_subtitle(ctx);
+ break;
+
+ case SUBTITLE_BITMAP:
+ status = aribcaption_trans_bitmap_subtitle(ctx);
+ break;
+
+ case SUBTITLE_NONE:
+ default:
+ status = 0;
+ }
+
+ if (status < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to set Subtitle: %s\n",
+ av_err2str(status));
+ aribcc_caption_cleanup(&ctx->caption);
+ return status;
+ }
+ if (status > 0) {
+ *got_sub_ptr = 1;
+ if (ctx->avpkt->pts != AV_NOPTS_VALUE)
+ sub->pts = av_rescale_q(ctx->avpkt->pts,
+ ctx->time_base, AV_TIME_BASE_Q);
+ if (ctx->caption.wait_duration == ARIBCC_DURATION_INDEFINITE)
+ sub->end_display_time = UINT32_MAX;
+ else
+ sub->end_display_time = (uint32_t)ctx->caption.wait_duration;
+ }
+
+ aribcc_caption_cleanup(&ctx->caption);
+ return avpkt->size;
+}
+
+static void aribcaption_flush(AVCodecContext *avctx)
+{
+ ARIBCaptionContext *ctx = avctx->priv_data;
+
+ if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP)) {
+ if (ctx->decoder)
+ aribcc_decoder_flush(ctx->decoder);
+ if (ctx->renderer)
+ aribcc_renderer_flush(ctx->renderer);
+ ctx->readorder = 0;
+ }
+}
+
+static int aribcaption_close(AVCodecContext *avctx)
+{
+ ARIBCaptionContext *ctx = avctx->priv_data;
+
+ aribcaption_flush(avctx);
+
+ if (ctx->clut)
+ av_freep(&ctx->clut);
+ if (ctx->renderer) {
+ aribcc_renderer_free(ctx->renderer);
+ ctx->decoder = NULL;
+ }
+ if (ctx->decoder) {
+ aribcc_decoder_free(ctx->decoder);
+ ctx->decoder = NULL;
+ }
+ if (ctx->context) {
+ aribcc_context_free(ctx->context);
+ ctx->context = NULL;
+ }
+
+ return 0;
+}
+
+static int aribcaption_init(AVCodecContext *avctx)
+{
+ ARIBCaptionContext *ctx = avctx->priv_data;
+ aribcc_profile_t profile;
+ aribcc_encoding_scheme_t encode_scheme;
+ int ret = 0;
+
+ ctx->avctx = avctx;
+
+ switch (avctx->profile) {
+ case FF_PROFILE_ARIB_PROFILE_A:
+ profile = ARIBCC_PROFILE_A;
+ /* assume 960x540 at initial state */
+ ctx->plane_width = 960;
+ ctx->plane_height = 540;
+ ctx->font_size = 36;
+ break;
+ case FF_PROFILE_ARIB_PROFILE_C:
+ profile = ARIBCC_PROFILE_C;
+ ctx->plane_width = 320;
+ ctx->plane_height = 180;
+ ctx->font_size = 16;
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "Unknown or unsupported profile set.\n");
+ return AVERROR(EINVAL);
+ }
+ /* determine BorderStyle of ASS header */
+ if (ctx->ignore_background)
+ ctx->border_style = 1;
+ else
+ ctx->border_style = 4;
+ ctx->charstyle = ARIBCC_CHARSTYLE_DEFAULT;
+ if (ctx->force_stroke_text || ctx->ignore_background)
+ ctx->charstyle |= ARIBCC_CHARSTYLE_STROKE;
+
+ encode_scheme = ARIBCC_ENCODING_SCHEME_AUTO;
+ if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_DO_NOTHING)
+ encode_scheme = ARIBCC_ENCODING_SCHEME_ARIB_STD_B24_UTF8;
+
+ if (!(ctx->context = aribcc_context_alloc())) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to alloc libaribcaption context.\n");
+ aribcaption_close(avctx);
+ return AVERROR_EXTERNAL;
+ }
+ aribcc_context_set_logcat_callback(ctx->context, logcat_callback, avctx);
+ if (!(ctx->decoder = aribcc_decoder_alloc(ctx->context))) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to alloc libaribcaption decoder.\n");
+ aribcaption_close(avctx);
+ return AVERROR_EXTERNAL;
+ }
+ if (!aribcc_decoder_initialize(ctx->decoder,
+ encode_scheme,
+ ARIBCC_CAPTIONTYPE_CAPTION,
+ profile,
+ ARIBCC_LANGUAGEID_FIRST)) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to initialize libaribcaption decoder.\n");
+ aribcaption_close(avctx);
+ return AVERROR_EXTERNAL;
+ }
+ aribcc_decoder_set_replace_msz_fullwidth_ascii(ctx->decoder,
+ ctx->replace_fullwidth_ascii);
+
+ switch (ctx->subtitle_type) {
+ case SUBTITLE_ASS:
+ ret = set_ass_header(ctx);
+ if (ret != 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set ASS header: %s\n",
+ av_err2str(ret));
+ return ret;
+ }
+ break;
+
+ case SUBTITLE_BITMAP:
+ if(!(ctx->renderer = aribcc_renderer_alloc(ctx->context))) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to alloc libaribcaption renderer.\n");
+ aribcaption_close(avctx);
+ return AVERROR_EXTERNAL;
+ }
+ if(!aribcc_renderer_initialize(ctx->renderer,
+ ARIBCC_CAPTIONTYPE_CAPTION,
+ ARIBCC_FONTPROVIDER_TYPE_AUTO,
+ (aribcc_textrenderer_type_t)ctx->rendering_backend)) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to initialize libaribcaption renderer.\n");
+ aribcaption_close(avctx);
+ return AVERROR_EXTERNAL;
+ }
+ estimate_video_frame_size(ctx);
+ if (!aribcc_renderer_set_frame_size(ctx->renderer,
+ ctx->frame_width, ctx->frame_height)) {
+ av_log(ctx, AV_LOG_ERROR,
+ "aribcc_renderer_set_frame_size() returned with error.\n");
+ return AVERROR_EXTERNAL;
+ }
+ if (!(ctx->clut = av_mallocz(AVPALETTE_SIZE)))
+ return AVERROR(ENOMEM);
+
+ aribcc_renderer_set_storage_policy(ctx->renderer, ARIBCC_CAPTION_STORAGE_POLICY_MINIMUM, 0);
+ aribcc_renderer_set_replace_drcs(ctx->renderer, ctx->replace_drcs);
+ aribcc_renderer_set_force_stroke_text(ctx->renderer, ctx->force_stroke_text);
+ aribcc_renderer_set_force_no_background(ctx->renderer, ctx->ignore_background);
+ aribcc_renderer_set_force_no_ruby(ctx->renderer, ctx->ignore_ruby);
+ aribcc_renderer_set_stroke_width(ctx->renderer, ctx->stroke_width);
+ if (ctx->font_name && strlen(ctx->font_name) > 0) {
+ const char* font_families[] = { ctx->font_name };
+ aribcc_renderer_set_default_font_family(ctx->renderer, font_families, 1, true);
+ }
+ break;
+
+ case SUBTITLE_TEXT:
+ case SUBTITLE_NONE:
+ default:
+ /* do nothing */ ;
+ }
+
+ ctx->readorder = 0;
+
+ return 0;
+}
+
+#if !defined(DEFAULT_SUBTITLE_TYPE)
+# define DEFAULT_SUBTITLE_TYPE SUBTITLE_ASS
+#endif
+#if !defined(ASS_WORKAROUND)
+# define ASS_WORKAROUND 1
+#endif
+#if !defined(DEFAULT_FONT_FAMILY)
+# if defined(_WIN32)
+# define DEFAULT_FONT_FAMILY ASS_DEFAULT_FONT
+# else
+# define DEFAULT_FONT_FAMILY "sans-serif"
+# endif
+#endif
+
+#define OFFSET(x) offsetof(ARIBCaptionContext, x)
+#define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
+static const AVOption options[] = {
+ { "sub_type", "subtitle rendering type",
+ OFFSET(subtitle_type), AV_OPT_TYPE_INT,
+ { .i64 = DEFAULT_SUBTITLE_TYPE }, SUBTITLE_NONE, SUBTITLE_ASS, SD, "type" },
+ { "none", "do nothing", 0, AV_OPT_TYPE_CONST,
+ { .i64 = SUBTITLE_NONE }, .flags = SD, .unit = "type" },
+ { "bitmap", "bitmap rendering", 0, AV_OPT_TYPE_CONST,
+ { .i64 = SUBTITLE_BITMAP }, .flags = SD, .unit = "type" },
+ { "text", "plain text", 0, AV_OPT_TYPE_CONST,
+ { .i64 = SUBTITLE_TEXT }, .flags = SD, .unit = "type" },
+ { "ass", "formatted text", 0, AV_OPT_TYPE_CONST,
+ { .i64 = SUBTITLE_ASS }, .flags = SD, .unit = "type" },
+ { "ass_workaround", "workaround of ASS subtitle for players which can't handle multi-rectangle (e.g., MPV) [ass]",
+ OFFSET(ass_workaround), AV_OPT_TYPE_BOOL, { .i64 = ASS_WORKAROUND }, 0, 1, SD },
+ { "font", "font name [ass, bitmap]",
+ OFFSET(font_name), AV_OPT_TYPE_STRING, { .str = DEFAULT_FONT_FAMILY }, 0, 0, SD },
+ { "replace_fullwidth_ascii", "replace MSZ fullwidth alphanumerics with halfwidth alphanumerics [ass, bitmap]",
+ OFFSET(replace_fullwidth_ascii), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, SD },
+ { "force_outline_text", "always render characters with outline [(ass), bitmap]",
+ OFFSET(force_stroke_text), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, SD },
+ { "ignore_background", "ignore rendering caption background [(ass), bitmap]",
+ OFFSET(ignore_background), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, SD },
+ { "ignore_ruby", "ignore ruby-like characters [ass, bitmap]",
+ OFFSET(ignore_ruby), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, SD },
+ { "fadeout", "enable Fadeout [ass, bitmap]",
+ OFFSET(fadeout), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, SD },
+ { "outline_width", "outline width of text [(ass), bitmap]",
+ OFFSET(stroke_width), AV_OPT_TYPE_FLOAT, { .dbl = 1.5 }, 0.0, 3.0, SD },
+ { "replace_drcs", "replace known DRCS [bitmap]",
+ OFFSET(replace_drcs), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, SD },
+ { "rendering_backend", "text rendering backend [bitmap]",
+ OFFSET(rendering_backend), AV_OPT_TYPE_INT,
+ { .i64 = ARIBCC_TEXTRENDERER_TYPE_AUTO },
+ ARIBCC_TEXTRENDERER_TYPE_AUTO, ARIBCC_TEXTRENDERER_TYPE_FREETYPE, SD, "renderer"},
+ { "auto", "Detect and select TextRenderer automatically", 0, AV_OPT_TYPE_CONST,
+ { .i64 = ARIBCC_TEXTRENDERER_TYPE_AUTO }, .flags = SD, .unit = "renderer" },
+#ifdef ARIBCC_USE_CORETEXT
+ { "coretext", "Apple CoreText API based TextRenderer. Available on macOS and iOS.", 0, AV_OPT_TYPE_CONST,
+ { .i64 = ARIBCC_TEXTRENDERER_TYPE_CORETEXT }, .flags = SD, .unit = "renderer" },
+#endif
+#ifdef ARIBCC_USE_DIRECTWRITE
+ { "directwrite", "DirectWrite API based TextRenderer. Available on Windows 7+.", 0, AV_OPT_TYPE_CONST,
+ { .i64 = ARIBCC_TEXTRENDERER_TYPE_DIRECTWRITE }, .flags = SD, .unit = "renderer" },
+#endif
+#ifdef ARIBCC_USE_FREETYPE
+ { "freetype", "Freetype based TextRenderer. Available on all platforms.", 0, AV_OPT_TYPE_CONST,
+ { .i64 = ARIBCC_TEXTRENDERER_TYPE_FREETYPE }, .flags = SD, .unit = "renderer" },
+#endif
+ { NULL }
+};
+
+static const AVClass aribcaption_class = {
+ .class_name = "aribcaption decoder",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+const FFCodec ff_aribcaption_decoder = {
+ .p.name = "aribcaption",
+ .p.long_name = NULL_IF_CONFIG_SMALL("ARIB STD-B24 caption decoder"),
+ .p.type = AVMEDIA_TYPE_SUBTITLE,
+ .p.id = AV_CODEC_ID_ARIB_CAPTION,
+ .priv_data_size = sizeof(ARIBCaptionContext),
+ .init = aribcaption_init,
+ .close = aribcaption_close,
+ FF_CODEC_DECODE_SUB_CB(aribcaption_decode),
+ .flush = aribcaption_flush,
+ .p.priv_class= &aribcaption_class,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
+};
--
2.30.2
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