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b6138633cd
This patch add another ARIB caption decoder using libaribcaption external library. 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. Advantages compared with libaribb24 on ASS subtitle are: * Subtitle positioning. * Multi-rect subtitle: some captions are displayed at different position at a time. * More stability and reproducibility. To compile with this feature: * libaribcaption external library has to be pre-installed. https://github.com/xqq/libaribcaption * configure with `--enable-libaribcaption` option. `--enable-libaribb24` and `--enable-libaribcaption` options are not exclusive. If both enabled, libaribcaption precedes as order listed in `libavcodec/allcodecs.c`. Signed-off-by: rcombs <rcombs@rcombs.me>
1172 lines
42 KiB
C
1172 lines
42 KiB
C
/*
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* ARIB STD-B24 caption decoder using the libaribcaption library
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* Copyright (c) 2022 TADANO Tokumei
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*
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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 "avcodec.h"
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#include "codec_internal.h"
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#include "internal.h"
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#include "libavcodec/ass.h"
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#include "libavutil/avstring.h"
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#include "libavutil/avutil.h"
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#include "libavutil/thread.h"
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#include "libavutil/log.h"
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#include "libavutil/opt.h"
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#include <aribcaption/aribcaption.h>
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#if !defined(DEFAULT_FONT_ASS)
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# define DEFAULT_FONT_ASS "sans-serif"
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#endif
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#define ARIBC_BPRINT_SIZE_INIT 64
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#define ARIBC_BPRINT_SIZE_MAX (8 * 1024)
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#define ARIBC_ALPHA_MAX_NUM 4
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#define ARIBC_ALPHA_DEFAULT_FRONT 0xFF
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#define ARIBC_ALPHA_DEFAULT_BACK 0x80
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#define ARIBCC_COLOR_RGB(c) ((c) & 0xFFFFFF)
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#define ARIBCC_COLOR_DIFF_RGB(c1,c2) (((c1) ^ (c2)) & 0x00FFFFFF)
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#define ARIBCC_COLOR_DIFF_A(c1,c2) (((c1) ^ (c2)) & 0xFF000000)
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#define CLUT_RGBA(r,g,b,a) (((unsigned)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
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#define CLUT_A(c) (((c) >> 24) & 0xFF)
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#define CLUT_R(c) (((c) >> 16) & 0xFF)
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#define CLUT_G(c) (((c) >> 8) & 0xFF)
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#define CLUT_B(c) ( (c) & 0xFF)
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#define ARIBCC_COLOR_TO_CLUT_RGBA(c,a) (((ARIBCC_COLOR_A(c) ? ARIBCC_COLOR_A(c) : (a)) << 24) | \
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(ARIBCC_COLOR_R(c) << 16) | \
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(ARIBCC_COLOR_G(c) << 8) | \
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(ARIBCC_COLOR_B(c)))
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typedef struct ARIBCaptionContext {
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AVClass *class;
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AVCodecContext *avctx;
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const AVPacket *avpkt;
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AVSubtitle *sub;
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aribcc_context_t *context;
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aribcc_decoder_t *decoder;
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aribcc_renderer_t *renderer;
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int subtitle_type;
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int encoding_scheme;
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bool ass_single_rect;
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char *font;
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bool replace_fullwidth_ascii;
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bool force_stroke_text;
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bool ignore_background;
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bool ignore_ruby;
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float stroke_width;
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bool replace_drcs;
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int64_t pts;
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AVRational time_base;
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int canvas_width;
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int canvas_height;
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int plane_width;
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int plane_height;
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int frame_width;
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int frame_height;
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int bitmap_plane_width;
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int bitmap_plane_height;
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int font_size;
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int charstyle;
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int border_style;
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int readorder;
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aribcc_caption_t caption;
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aribcc_render_result_t render_result;
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uint32_t *clut;
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int clut_idx;
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int clut_overflow;
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uint8_t clut_alpha[ARIBC_ALPHA_MAX_NUM];
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} ARIBCaptionContext;
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static void hex_dump_debug(void *ctx, const char *buf, int buf_size)
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{
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int i;
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for (i = 0; i < buf_size; i++) {
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ff_dlog(ctx, "%02hhx ", buf[i]);
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if (i % 16 == 15)
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ff_dlog(ctx, "\n");
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}
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if (i % 16)
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ff_dlog(ctx, "\n");
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}
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static void logcat_callback(aribcc_loglevel_t level, const char* message, void* userdata)
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{
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ARIBCaptionContext *ctx = userdata;
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int lvl;
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if (ctx->decoder != NULL) {
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switch (level) {
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case ARIBCC_LOGLEVEL_ERROR:
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lvl = AV_LOG_ERROR;
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break;
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case ARIBCC_LOGLEVEL_WARNING:
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lvl = AV_LOG_WARNING;
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break;
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default:
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lvl = AV_LOG_INFO;
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}
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av_log(ctx, lvl, "%s\n", message);
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}
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}
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static void estimate_video_frame_size(ARIBCaptionContext *ctx)
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{
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if (ctx->avctx->width > 0 && ctx->avctx->height > 0) {
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/* input video size specified by -canvas_size option */
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ctx->bitmap_plane_width = ctx->avctx->width;
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ctx->bitmap_plane_height = ctx->avctx->height;
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} else if (ctx->plane_width == 960) {
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/* ARIB TR-B14 Fascicle 2 Volume 3 [Section 2] 4.3.1 */
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/* ARIB TR-B14 Fascicle 2 Volume 3 [Section 2] Appendix-4 */
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ctx->bitmap_plane_width = 1440;
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ctx->bitmap_plane_height = 1080;
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} else {
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ctx->bitmap_plane_width = ctx->plane_width;
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ctx->bitmap_plane_height = ctx->plane_height;
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}
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/* Expand either width or height */
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if (ctx->bitmap_plane_height * ctx->plane_width > ctx->bitmap_plane_width * ctx->plane_height) {
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ctx->frame_height = ctx->bitmap_plane_height;
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ctx->frame_width = ctx->frame_height * ctx->plane_width / ctx->plane_height;
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} else {
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ctx->frame_width = ctx->bitmap_plane_width;
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ctx->frame_height = ctx->frame_width * ctx->plane_height / ctx->plane_width;
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}
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}
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static void clut_set_alpha(ARIBCaptionContext *ctx, uint8_t a)
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{
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int i;
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for (i = 0; i < ARIBC_ALPHA_MAX_NUM; i++) {
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if (ctx->clut_alpha[i] == 0) {
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ctx->clut_alpha[i] = a;
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return;
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}
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if (ctx->clut_alpha[i] == a)
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return;
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}
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return;
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}
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static uint8_t clut_find_nearlest_alpha(ARIBCaptionContext *ctx, uint8_t a)
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{
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int i, j, d;
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if (a == 0)
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return a;
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d = 256;
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j = 0;
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for (i = 0; i < ARIBC_ALPHA_MAX_NUM; i++) {
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if (ctx->clut_alpha[i] == a)
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return a;
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if (ctx->clut_alpha[i] == 0)
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break;
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if (abs((int)a - (int)ctx->clut_alpha[i]) < d) {
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d = abs((int)a - (int)ctx->clut_alpha[i]);
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j = i;
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}
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}
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return ctx->clut_alpha[j];
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}
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static int clut_find(ARIBCaptionContext *ctx, uint32_t rgba)
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{
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int i;
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for (i = 0; i < ctx->clut_idx; i++) {
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if (ctx->clut[i] == rgba)
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return i;
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}
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return -1;
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}
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static inline int clut_color_distance(uint32_t rgba1, uint32_t rgba2)
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{
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return abs((int)CLUT_R(rgba1) - (int)CLUT_R(rgba2)) +
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abs((int)CLUT_G(rgba1) - (int)CLUT_G(rgba2)) +
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abs((int)CLUT_B(rgba1) - (int)CLUT_B(rgba2));
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}
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static uint8_t clut_pick_or_set(ARIBCaptionContext *ctx, int r, int g, int b, int a)
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{
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int c, i, d, d_min;
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uint32_t rgba;
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a = clut_find_nearlest_alpha(ctx, a);
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if (a == 0)
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return 0; /* transparent */
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rgba = CLUT_RGBA(r,g,b,a);
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d_min = 256 * 3;
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c = 0;
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for (i = 0; i < ctx->clut_idx; i++) {
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if (ctx->clut[i] == rgba)
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return i;
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if (CLUT_A(ctx->clut[i]) != a)
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continue;
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d = clut_color_distance(ctx->clut[i], rgba);
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if (d < d_min) {
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d_min = d;
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c = i;
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}
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}
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if (d_min > 3) {
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if (ctx->clut_idx >= AVPALETTE_COUNT)
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ctx->clut_overflow++;
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else {
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c = ctx->clut_idx;
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ctx->clut[ctx->clut_idx++] = rgba;
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}
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}
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return c;
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}
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/* initialiaze CLUT with each character colors */
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static void clut_init(ARIBCaptionContext *ctx, aribcc_caption_region_t *region)
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{
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aribcc_color_t text_color, back_color, stroke_color;
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uint32_t rgba;
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ctx->clut[0] = CLUT_RGBA(0,0,0,0); /* transparent */
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ctx->clut_alpha[0] = 0xFF;
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ctx->clut_idx = 1;
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ctx->clut_overflow = 0;
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text_color = region->chars[0].text_color;
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back_color = region->chars[0].back_color;
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stroke_color = region->chars[0].stroke_color;
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(text_color, ARIBC_ALPHA_DEFAULT_FRONT);
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(back_color, ARIBC_ALPHA_DEFAULT_BACK);
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(stroke_color, ARIBC_ALPHA_DEFAULT_FRONT);
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if (clut_find(ctx, rgba) < 0) {
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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}
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for (int i = 1; i < region->char_count; i++) {
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if (region->chars[i].text_color != text_color) {
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].text_color,
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ARIBC_ALPHA_DEFAULT_FRONT);
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if (clut_find(ctx, rgba) < 0) {
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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}
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}
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if (region->chars[i].back_color != back_color) {
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].back_color,
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ARIBC_ALPHA_DEFAULT_BACK);
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if (clut_find(ctx, rgba) < 0) {
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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}
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}
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if (region->chars[i].stroke_color != stroke_color) {
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rgba = ARIBCC_COLOR_TO_CLUT_RGBA(region->chars[i].stroke_color,
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ARIBC_ALPHA_DEFAULT_FRONT);
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if (clut_find(ctx, rgba) < 0) {
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if (ctx->clut_idx < AVPALETTE_COUNT)
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ctx->clut[ctx->clut_idx++] = rgba;
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clut_set_alpha(ctx, CLUT_A(rgba));
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}
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}
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}
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}
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/**
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* aribcaption_trans_{bitmap|ass|text}_subtitle()
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*
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* Transfer decoded subtitle to AVSubtitle with corresponding subtitle type.
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*
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* @param ctx pointer to the ARIBCaptionContext
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* @return > 0 number of rectangles to be displayed
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* = 0 no subtitle
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* < 0 error code
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*/
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static int aribcaption_trans_bitmap_subtitle(ARIBCaptionContext *ctx)
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{
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int ret = 0;
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AVSubtitle *sub = ctx->sub;
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int status, rect_idx;
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int old_width = ctx->frame_width;
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int old_height = ctx->frame_height;
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if (ctx->caption.plane_width > 0 && ctx->caption.plane_height > 0) {
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ctx->plane_width = ctx->caption.plane_width;
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ctx->plane_height = ctx->caption.plane_height;
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}
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estimate_video_frame_size(ctx);
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if (ctx->frame_width != old_width || ctx->frame_height != old_height) {
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ff_dlog(ctx, "canvas: %dx%d plane: %dx%d bitmap: %dx%d frame: %dx%d\n",
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ctx->avctx->width, ctx->avctx->height,
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ctx->plane_width, ctx->plane_height,
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ctx->bitmap_plane_width, ctx->bitmap_plane_height,
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ctx->frame_width, ctx->frame_height);
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if (!aribcc_renderer_set_frame_size(ctx->renderer,
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ctx->frame_width, ctx->frame_height)) {
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av_log(ctx, AV_LOG_ERROR,
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"aribcc_renderer_set_frame_size() returned with error.\n");
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return AVERROR_EXTERNAL;
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}
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}
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status = aribcc_renderer_append_caption(ctx->renderer, &ctx->caption);
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if (!status) {
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av_log(ctx, AV_LOG_ERROR,
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"aribcc_renderer_append_caption() returned with error.\n");
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return AVERROR_EXTERNAL;
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}
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status = aribcc_renderer_render(ctx->renderer, ctx->pts, &ctx->render_result);
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switch (status) {
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case ARIBCC_RENDER_STATUS_GOT_IMAGE:
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break;
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case ARIBCC_RENDER_STATUS_GOT_IMAGE_UNCHANGED:
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aribcc_render_result_cleanup(&ctx->render_result);
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ff_dlog(ctx, "got image unchanged\n");
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return 0;
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case ARIBCC_RENDER_STATUS_NO_IMAGE:
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ff_dlog(ctx, "no image\n");
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return 0;
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case ARIBCC_RENDER_STATUS_ERROR:
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av_log(ctx, AV_LOG_ERROR,
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"aribcc_renderer_render() returned with error.\n");
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return AVERROR_EXTERNAL;
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default:
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aribcc_render_result_cleanup(&ctx->render_result);
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av_log(ctx, AV_LOG_ERROR,
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"aribcc_renderer_render() returned unknown status: %d\n", status);
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return AVERROR_EXTERNAL;
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}
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if (!ctx->render_result.image_count || ctx->render_result.images == NULL) {
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aribcc_render_result_cleanup(&ctx->render_result);
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ff_dlog(ctx, "no image (%d)\n", ctx->render_result.image_count);
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return 0;
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}
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sub->format = 0; /* graphic */
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sub->rects = av_calloc(ctx->render_result.image_count, sizeof(*sub->rects));
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if (!sub->rects) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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for (int i = 0; i < ctx->render_result.image_count; i++) {
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sub->rects[i] = av_mallocz(sizeof(*sub->rects[i]));
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if (!sub->rects[i]) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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}
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for (rect_idx = 0; rect_idx < ctx->caption.region_count; rect_idx++) {
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AVSubtitleRect *rect = sub->rects[rect_idx];
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aribcc_image_t *image = &ctx->render_result.images[rect_idx];
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int w, h, shrink_height, dst_idx;
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clut_init(ctx, &ctx->caption.regions[rect_idx]);
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rect->w = image->width * ctx->bitmap_plane_width / ctx->frame_width;
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rect->h = image->height * ctx->bitmap_plane_height / ctx->frame_height;
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rect->data[0] = av_mallocz(rect->w * rect->h);
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if (!rect->data[0]) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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if ((image->height != rect->h && image->width != rect->w) ||
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image->stride < image->width * 4 ||
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image->stride * image->height > image->bitmap_size) {
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av_log(ctx, AV_LOG_ERROR, "Bug: unexpected rendered image: %d(%d)x%d -> %dx%d\n",
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image->width, image->stride / 4, image->height, rect->w, rect->h);
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ret = AVERROR_EXTERNAL;
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goto fail;
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}
|
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shrink_height = image->height != rect->h;
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dst_idx = 0;
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for (h = 0; h < rect->h; h++) {
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for (w = 0; w < rect->w; w++) {
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/* Bi-linear interpolation */
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int n, m, idx0, idx1, r, g, b, a;
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if (shrink_height) {
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int div_a, y0, y1;
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div_a = h * ctx->frame_height;
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n = ctx->bitmap_plane_height;
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y0 = div_a / n;
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y1 = FFMIN(y0 + 1, image->height - 1);
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m = div_a - n * y0;
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idx0 = image->stride * y0 + w * 4;
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idx1 = image->stride * y1 + w * 4;
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} else {
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int div_a, x0, x1;
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div_a = w * ctx->frame_width;
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n = ctx->bitmap_plane_width;
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x0 = div_a / n;
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x1 = FFMIN(x0 + 1, image->width - 1);
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m = div_a - n * x0;
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idx0 = image->stride * h + x0 * 4;
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idx1 = image->stride * h + x1 * 4;
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}
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r = (image->bitmap[idx0++] * (n - m) + image->bitmap[idx1++] * m) / n;
|
|
g = (image->bitmap[idx0++] * (n - m) + image->bitmap[idx1++] * m) / n;
|
|
b = (image->bitmap[idx0++] * (n - m) + image->bitmap[idx1++] * m) / n;
|
|
a = (image->bitmap[idx0++] * (n - m) + image->bitmap[idx1++] * m) / n;
|
|
rect->data[0][dst_idx++] = clut_pick_or_set(ctx, r, g, b, a);
|
|
}
|
|
}
|
|
rect->data[1] = av_memdup(ctx->clut, AVPALETTE_SIZE);
|
|
if (!rect->data[1]) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
if (ctx->avctx->profile == FF_PROFILE_ARIB_PROFILE_C) {
|
|
/* ARIB TR-B14 version 3.8 Fascicle 1-(2/2) Volume 3 [Section 4] */
|
|
/* No position information is provided for profile C */
|
|
rect->x = (ctx->frame_width - rect->w) / 2;
|
|
rect->y = ctx->frame_height - rect->h * (ctx->caption.region_count - rect_idx);
|
|
} else {
|
|
rect->x = image->dst_x * ctx->bitmap_plane_width / ctx->frame_width;
|
|
rect->y = image->dst_y * ctx->bitmap_plane_height / ctx->frame_height;
|
|
}
|
|
rect->type = SUBTITLE_BITMAP;
|
|
rect->linesize[0] = rect->w;
|
|
rect->nb_colors = 256;
|
|
|
|
ff_dlog(ctx, "BITMAP subtitle%s (%d,%d) %dx%d -> (%d,%d) %dx%d [%d]: %d colors\n",
|
|
(ctx->caption.regions[rect_idx].is_ruby) ? " (ruby)" : "",
|
|
image->dst_x, image->dst_y, image->width, image->height,
|
|
rect->x, rect->y, rect->w, rect->h,
|
|
rect_idx, ctx->clut_idx);
|
|
if (ctx->clut_overflow)
|
|
av_log(ctx, AV_LOG_WARNING, "CLUT overflow (%d).\n", ctx->clut_overflow);
|
|
}
|
|
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;
|
|
const char *font_name;
|
|
const char *fonts = ctx->font;
|
|
|
|
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 (fonts && *fonts)
|
|
font_name = av_get_token(&fonts, ",");
|
|
else
|
|
font_name = av_strdup(DEFAULT_FONT_ASS);
|
|
if (!font_name)
|
|
return AVERROR(ENOMEM);
|
|
|
|
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,
|
|
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);
|
|
|
|
av_freep(&font_name);
|
|
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))
|
|
av_bprintf(buf, "{\\%da&H%02x&}", color_num,
|
|
0xFF - ARIBCC_COLOR_A(new_color));
|
|
}
|
|
|
|
static int aribcaption_trans_ass_subtitle(ARIBCaptionContext *ctx)
|
|
{
|
|
AVSubtitle *sub = ctx->sub;
|
|
AVBPrint buf;
|
|
bool single_rect = ctx->ass_single_rect;
|
|
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)) {
|
|
ctx->plane_width = ctx->caption.plane_width;
|
|
ctx->plane_height = ctx->caption.plane_height;
|
|
if ((ret = set_ass_header(ctx)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* ARIB TR-B14 version 3.8 Fascicle 1-(2/2) Volume 3 [Section 4] */
|
|
/* No position information is provided for profile C */
|
|
if (ctx->avctx->profile == FF_PROFILE_ARIB_PROFILE_C)
|
|
single_rect = true;
|
|
|
|
sub->format = 1; /* text */
|
|
if (ctx->caption.region_count == 0) {
|
|
/* clear previous caption for indefinite duration */
|
|
ff_ass_add_rect(sub, "", ctx->readorder++, 0, NULL, NULL);
|
|
return 1;
|
|
}
|
|
|
|
av_bprint_init(&buf, ARIBC_BPRINT_SIZE_INIT, ARIBC_BPRINT_SIZE_MAX);
|
|
|
|
if (single_rect && ctx->avctx->profile != FF_PROFILE_ARIB_PROFILE_C) {
|
|
int x, y, rx, ry;
|
|
x = ctx->plane_width;
|
|
y = ctx->plane_height;
|
|
for (int i = 0; i < ctx->caption.region_count; i++) {
|
|
rx = ctx->caption.regions[i].x;
|
|
ry = ctx->caption.regions[i].y;
|
|
if (rx < x)
|
|
x = rx;
|
|
if (ry < y)
|
|
y = ry;
|
|
}
|
|
av_bprintf(&buf, "{\\an7}");
|
|
if (y < 0)
|
|
y += ctx->plane_height;
|
|
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 (!single_rect) {
|
|
int x = region->x;
|
|
int y = region->y;
|
|
if (x < 0)
|
|
x += ctx->plane_width;
|
|
if (y < 0)
|
|
y += ctx->plane_height;
|
|
av_bprint_clear(&buf);
|
|
av_bprintf(&buf, "{\\an7}");
|
|
if (x > 0 || y > 0)
|
|
av_bprintf(&buf, "{\\pos(%d,%d)}", x, y);
|
|
}
|
|
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 (ctx->avctx->profile != FF_PROFILE_ARIB_PROFILE_C) {
|
|
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"); /* Geta Mark */
|
|
else
|
|
ff_ass_bprint_text_event(&buf, ch->u8str, strlen(ch->u8str), "", 0);
|
|
}
|
|
|
|
if (single_rect) {
|
|
if (i + 1 < ctx->caption.region_count)
|
|
av_bprintf(&buf, "{\\r}\\N");
|
|
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 (single_rect) {
|
|
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 ((enum AVSubtitleType) 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 (ctx->decoder)
|
|
aribcc_decoder_flush(ctx->decoder);
|
|
if (ctx->renderer)
|
|
aribcc_renderer_flush(ctx->renderer);
|
|
if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP))
|
|
ctx->readorder = 0;
|
|
}
|
|
|
|
static int aribcaption_close(AVCodecContext *avctx)
|
|
{
|
|
ARIBCaptionContext *ctx = avctx->priv_data;
|
|
|
|
av_freep(&ctx->clut);
|
|
if (ctx->renderer)
|
|
aribcc_renderer_free(ctx->renderer);
|
|
if (ctx->decoder)
|
|
aribcc_decoder_free(ctx->decoder);
|
|
if (ctx->context)
|
|
aribcc_context_free(ctx->context);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aribcaption_init(AVCodecContext *avctx)
|
|
{
|
|
ARIBCaptionContext *ctx = avctx->priv_data;
|
|
aribcc_profile_t profile;
|
|
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;
|
|
|
|
if (!(ctx->context = aribcc_context_alloc())) {
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to alloc libaribcaption context.\n");
|
|
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");
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
if (!aribcc_decoder_initialize(ctx->decoder,
|
|
(enum aribcc_encoding_scheme_t) ctx->encoding_scheme,
|
|
ARIBCC_CAPTIONTYPE_CAPTION,
|
|
profile,
|
|
ARIBCC_LANGUAGEID_FIRST)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to initialize libaribcaption decoder.\n");
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
aribcc_decoder_set_replace_msz_fullwidth_ascii(ctx->decoder,
|
|
ctx->replace_fullwidth_ascii);
|
|
|
|
/* Similar behavior as ffmpeg tool to set canvas size */
|
|
if (ctx->canvas_width > 0 && ctx->canvas_height > 0 &&
|
|
(ctx->avctx->width == 0 || ctx->avctx->height == 0)) {
|
|
ctx->avctx->width = ctx->canvas_width;
|
|
ctx->avctx->height = ctx->canvas_height;
|
|
}
|
|
|
|
switch ((enum AVSubtitleType) 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");
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
if(!aribcc_renderer_initialize(ctx->renderer,
|
|
ARIBCC_CAPTIONTYPE_CAPTION,
|
|
ARIBCC_FONTPROVIDER_TYPE_AUTO,
|
|
ARIBCC_TEXTRENDERER_TYPE_AUTO)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to initialize libaribcaption renderer.\n");
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
estimate_video_frame_size(ctx);
|
|
ff_dlog(ctx, "canvas: %dx%d plane: %dx%d bitmap: %dx%d frame: %dx%d\n",
|
|
ctx->avctx->width, ctx->avctx->height,
|
|
ctx->plane_width, ctx->plane_height,
|
|
ctx->bitmap_plane_width, ctx->bitmap_plane_height,
|
|
ctx->frame_width, ctx->frame_height);
|
|
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) {
|
|
int is_nomem = 0;
|
|
size_t count = 0;
|
|
const char **font_families = NULL;
|
|
const char *fonts = ctx->font;
|
|
|
|
while (*fonts) {
|
|
const char **ff = av_realloc_array(font_families, count + 1, sizeof(*font_families));
|
|
if (!ff) {
|
|
is_nomem = 1;
|
|
break;
|
|
} else {
|
|
font_families = ff;
|
|
ff[count++] = av_get_token(&fonts, ",");
|
|
if (!ff[count - 1]) {
|
|
is_nomem = 1;
|
|
break;
|
|
} else if (*fonts)
|
|
fonts++;
|
|
}
|
|
}
|
|
if (!is_nomem && count)
|
|
aribcc_renderer_set_default_font_family(ctx->renderer, font_families, count, true);
|
|
while (count)
|
|
av_freep(&font_families[--count]);
|
|
av_freep(&font_families);
|
|
if (is_nomem)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
break;
|
|
|
|
case SUBTITLE_TEXT:
|
|
case SUBTITLE_NONE:
|
|
default:
|
|
/* do nothing */ ;
|
|
}
|
|
|
|
ctx->readorder = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if !defined(ASS_SINGLE_RECT)
|
|
# define ASS_SINGLE_RECT 0
|
|
#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 = SUBTITLE_ASS }, 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" },
|
|
{ "caption_encoding", "encoding scheme of subtitle text",
|
|
OFFSET(encoding_scheme), AV_OPT_TYPE_INT, { .i64 = ARIBCC_ENCODING_SCHEME_AUTO },
|
|
ARIBCC_ENCODING_SCHEME_AUTO, ARIBCC_ENCODING_SCHEME_ABNT_NBR_15606_1_LATIN, SD, "encoding" },
|
|
{ "auto", "automatically detect encoding scheme", 0, AV_OPT_TYPE_CONST,
|
|
{ .i64 = ARIBCC_ENCODING_SCHEME_AUTO }, .flags = SD, .unit = "encoding" },
|
|
{ "jis", "8bit-char JIS encoding (Japanese ISDB captions)", 0, AV_OPT_TYPE_CONST,
|
|
{ .i64 = ARIBCC_ENCODING_SCHEME_ARIB_STD_B24_JIS }, .flags = SD, .unit = "encoding" },
|
|
{ "utf8", "UTF-8 encoding (Philippines ISDB-T captions)", 0, AV_OPT_TYPE_CONST,
|
|
{ .i64 = ARIBCC_ENCODING_SCHEME_ARIB_STD_B24_UTF8 }, .flags = SD, .unit = "encoding" },
|
|
{ "latin", "latin characters (SBTVD / ISDB-Tb captions used in South America)", 0, AV_OPT_TYPE_CONST,
|
|
{ .i64 = ARIBCC_ENCODING_SCHEME_ABNT_NBR_15606_1_LATIN }, .flags = SD, .unit = "encoding" },
|
|
{ "ass_single_rect", "workaround of ASS subtitle for players which can't handle multi-rectangle [ass]",
|
|
OFFSET(ass_single_rect), AV_OPT_TYPE_BOOL, { .i64 = ASS_SINGLE_RECT }, 0, 1, SD },
|
|
{ "font", "comma-separated font family [ass, bitmap]",
|
|
OFFSET(font), AV_OPT_TYPE_STRING, { .str = NULL }, 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 },
|
|
{ "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 },
|
|
{"canvas_size", "set input video size (WxH or abbreviation) [bitmap]",
|
|
OFFSET(canvas_width), AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, INT_MAX, SD },
|
|
{ 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_libaribcaption_decoder = {
|
|
.p.name = "libaribcaption",
|
|
.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_CLEANUP,
|
|
};
|