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sub: minor refactor how video FPS for MicroDVD is set

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So that the video FPs is not required at initialization, and can be set
later.

(As for whether this MicroDVD crap is worth the trouble to handle it
"correctly": MicroDVD files are unfortunately still around, and in at
least one case using the video FPS seemed to help indeed.)
This commit is contained in:
wm4
2015-12-27 01:25:32 +01:00
parent d9f8b9f7b2
commit 50c379e2d8
5 changed files with 30 additions and 29 deletions
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38
sub/sd_ass.c
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@@ -48,7 +48,7 @@ struct sd_ass_priv {
char last_text[500];
struct mp_image_params video_params;
struct mp_image_params last_params;
double sub_speed;
double sub_speed, video_fps, frame_fps;
int64_t *seen_packets;
int num_seen_packets;
};
@@ -147,6 +147,24 @@ static void enable_output(struct sd *sd, bool enable)
}
}
static void update_subtitle_speed(struct sd *sd)
{
struct MPOpts *opts = sd->opts;
struct sd_ass_priv *ctx = sd->priv;
ctx->sub_speed = 1.0;
if (ctx->video_fps > 0 && ctx->frame_fps > 0) {
MP_VERBOSE(sd, "Frame based format, dummy FPS: %f, video FPS: %f\n",
ctx->frame_fps, ctx->video_fps);
ctx->sub_speed *= ctx->frame_fps / ctx->video_fps;
}
if (opts->sub_fps && ctx->video_fps)
ctx->sub_speed *= opts->sub_fps / ctx->video_fps;
ctx->sub_speed *= opts->sub_speed;
}
static int init(struct sd *sd)
{
struct MPOpts *opts = sd->opts;
@@ -187,18 +205,8 @@ static int init(struct sd *sd)
mp_ass_add_default_styles(ctx->ass_track, opts);
ctx->sub_speed = 1.0;
if (sd->video_fps && sd->sh && sd->sh->sub->frame_based > 0) {
MP_VERBOSE(sd, "Frame based format, dummy FPS: %f, video FPS: %f\n",
sd->sh->sub->frame_based, sd->video_fps);
ctx->sub_speed *= sd->sh->sub->frame_based / sd->video_fps;
}
if (opts->sub_fps && sd->video_fps)
ctx->sub_speed *= opts->sub_fps / sd->video_fps;
ctx->sub_speed *= opts->sub_speed;
ctx->frame_fps = sd->sh->sub->frame_based;
update_subtitle_speed(sd);
enable_output(sd, true);
@@ -613,6 +621,10 @@ static int control(struct sd *sd, enum sd_ctrl cmd, void *arg)
case SD_CTRL_SET_TOP:
ctx->on_top = *(bool *)arg;
return CONTROL_OK;
case SD_CTRL_SET_VIDEO_DEF_FPS:
ctx->video_fps = *(double *)arg;
update_subtitle_speed(sd);
return CONTROL_OK;
default:
return CONTROL_UNKNOWN;
}