[FFmpeg-cvslog] lavc/libaribcaption: add MSZ character related options

[TADANO Tokumei]

ffmpeg | branch: master | TADANO Tokumei <aimingoff at pc.nifty.jp> | Tue Oct 17 22:13:34 2023 +0900| [21bfadd9b4a216c0b0994465325822d554fc6a52] | committer: Jan Ekström

lavc/libaribcaption: add MSZ character related options

This patch adds two MSZ (Middle Size; half width) character
related options, mapping against newly added upstream
functionality:

* `replace_msz_japanese`, which was introduced in version 1.0.1
  of libaribcaption.
* `replace_msz_glyph`, which was introduced in version 1.1.0
  of libaribcaption.

The latter option improves bitmap type rendering if specified
fonts contain half-width glyphs (e.g., BIZ UDGothic), even
if both ASCII and Japanese MSZ replacement options are set
to false.

As these options require newer versions of libaribcaption, the
configure requirement has been bumped accordingly.

Signed-off-by: TADANO Tokumei <aimingoff at pc.nifty.jp>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=21bfadd9b4a216c0b0994465325822d554fc6a52
---

 configure                   |  2 +-
 doc/decoders.texi           | 16 ++++++++++++++++
 libavcodec/libaribcaption.c | 10 ++++++++++
 libavcodec/version.h        |  2 +-
 4 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index f494da204c..1f0b9497cb 100755
--- a/configure
+++ b/configure
@@ -6677,7 +6677,7 @@ enabled libaom            && require_pkg_config libaom "aom >= 1.0.0" aom/aom_co
 enabled libaribb24        && { check_pkg_config libaribb24 "aribb24 > 1.0.3" "aribb24/aribb24.h" arib_instance_new ||
                                { enabled gpl && require_pkg_config libaribb24 aribb24 "aribb24/aribb24.h" arib_instance_new; } ||
                                die "ERROR: libaribb24 requires version higher than 1.0.3 or --enable-gpl."; }
-enabled libaribcaption    && require_pkg_config libaribcaption "libaribcaption >= 0.1.0" "aribcaption/aribcaption.h" aribcc_context_alloc
+enabled libaribcaption    && require_pkg_config libaribcaption "libaribcaption >= 1.1.1" "aribcaption/aribcaption.h" aribcc_context_alloc
 enabled lv2               && require_pkg_config lv2 lilv-0 "lilv/lilv.h" lilv_world_new
 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
 enabled libass            && require_pkg_config libass "libass >= 0.11.0" ass/ass.h ass_library_init
diff --git a/doc/decoders.texi b/doc/decoders.texi
index 09b8314dd2..36c3404475 100644
--- a/doc/decoders.texi
+++ b/doc/decoders.texi
@@ -459,6 +459,22 @@ Specify whether to render replaced DRCS characters as Unicode characters.
 
 The default is @var{true}.
 
+ at item -replace_msz_japanese @var{boolean}
+Specify whether to replace some MSZ (Middle Size; half width) fullwidth
+japanese special characters with halfwidth ones.
+
+The default is @var{true}.
+
+ at item -replace_msz_glyph @var{boolean}
+Specify whether to replace MSZ (Middle Size; half width) characters
+with halfwidth glyphs if the fonts supports it.
+This option works under FreeType or DirectWrite renderer
+with Adobe-Japan1 compliant fonts.
+e.g., IBM Plex Sans JP, Morisawa BIZ UDGothic, Morisawa BIZ UDMincho,
+Yu Gothic, Yu Mincho, and Meiryo.
+
+The default is @var{true}.
+
 @item -canvas_size @var{image_size}
 Specify the resolution of the canvas to render subtitles to; usually, this
 should be frame size of input video.
diff --git a/libavcodec/libaribcaption.c b/libavcodec/libaribcaption.c
index be3328c5c9..29642cd817 100644
--- a/libavcodec/libaribcaption.c
+++ b/libavcodec/libaribcaption.c
@@ -76,6 +76,8 @@ typedef struct ARIBCaptionContext {
     int ignore_ruby;
     float stroke_width;
     int replace_drcs;
+    int replace_msz_japanese;
+    int replace_msz_glyph;
 
     int64_t pts;
     AVRational time_base;
@@ -1005,6 +1007,8 @@ static int aribcaption_init(AVCodecContext *avctx)
     }
     aribcc_decoder_set_replace_msz_fullwidth_ascii(ctx->decoder,
                                                    ctx->replace_fullwidth_ascii);
+    aribcc_decoder_set_replace_msz_fullwidth_japanese(ctx->decoder,
+                                                      ctx->replace_msz_japanese);
 
     /* Similar behavior as ffmpeg tool to set canvas size */
     if (ctx->canvas_width > 0 && ctx->canvas_height > 0 &&
@@ -1057,6 +1061,8 @@ static int aribcaption_init(AVCodecContext *avctx)
         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);
+        aribcc_renderer_set_replace_msz_halfwidth_glyph(ctx->renderer,
+                                                        ctx->replace_msz_glyph);
         if (ctx->font) {
             int is_nomem = 0;
             size_t count = 0;
@@ -1144,6 +1150,10 @@ static const AVOption options[] = {
       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 },
+    { "replace_msz_japanese", "replace MSZ fullwidth Japanese with halfwidth [ass, bitmap]",
+      OFFSET(replace_msz_japanese), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, SD },
+    { "replace_msz_glyph", "replace MSZ characters with halfwidth glyphs [bitmap]",
+      OFFSET(replace_msz_glyph), 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 }
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 56dbb9238d..02192c86f7 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -30,7 +30,7 @@
 #include "version_major.h"
 
 #define LIBAVCODEC_VERSION_MINOR  32
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \