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authorwm4 <wm4@nowhere>2017-12-29 15:39:38 +0100
committerKevin Mitchell <kevmitch@gmail.com>2018-01-02 14:27:37 -0800
commit3bf7df4a5e1f46248c78e9e596cd8dab6ff57356 (patch)
tree1b49e9e053e063b397552038c7f3309878d65c86 /sub/sd_ass.c
parent828bd2963cd10a851e0a977809687aed4d377dc3 (diff)
downloadmpv-3bf7df4a5e1f46248c78e9e596cd8dab6ff57356.tar.bz2
mpv-3bf7df4a5e1f46248c78e9e596cd8dab6ff57356.tar.xz
sub: move all subtitle timestamp messing code to a central place
It was split at least across osd.c and sd_ass.c/sd_lavc.c. sd_lavc.c actually ignored most of the more obscure subtitle timing things. There's no reason for this - just move it all to dec_sub.c (mostly from sd_ass.c, because it has some of the most complex stuff). Now timestamps are transformed as they enter or leave dec_sub.c. There appear to have been some subtle mismatches about how subtitle timestamps were transformed, e.g. sd_functions.accepts_packet didn't apply the subtitle speed to the timestamp. This patch should fix them, although it's not clear if they caused actual misbehavior. The semantics of SD_CTRL_SUB_STEP are slightly changed, which is the reason for the changes in command.c and sd_lavc.c.
Diffstat (limited to 'sub/sd_ass.c')
-rw-r--r--sub/sd_ass.c35
1 files changed, 2 insertions, 33 deletions
diff --git a/sub/sd_ass.c b/sub/sd_ass.c
index 4bc9e15f8a..74d500be8d 100644
--- a/sub/sd_ass.c
+++ b/sub/sd_ass.c
@@ -49,7 +49,6 @@ struct sd_ass_priv {
char last_text[500];
struct mp_image_params video_params;
struct mp_image_params last_params;
- double sub_speed, video_fps, frame_fps;
int64_t *seen_packets;
int num_seen_packets;
bool duration_unknown;
@@ -147,24 +146,6 @@ 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;
@@ -212,9 +193,6 @@ static int init(struct sd *sd)
ass_set_check_readorder(ctx->ass_track, sd->opts->sub_clear_on_seek ? 0 : 1);
#endif
- ctx->frame_fps = sd->codec->frame_based;
- update_subtitle_speed(sd);
-
enable_output(sd, true);
ctx->packer = mp_ass_packer_alloc(ctx);
@@ -387,8 +365,6 @@ static long long find_timestamp(struct sd *sd, double pts)
if (pts == MP_NOPTS_VALUE)
return 0;
- pts /= priv->sub_speed;
-
long long ts = llrint(pts * 1000);
if (!sd->opts->sub_fix_timing || sd->opts->ass_style_override == 0)
@@ -679,11 +655,11 @@ static int control(struct sd *sd, enum sd_ctrl cmd, void *arg)
switch (cmd) {
case SD_CTRL_SUB_STEP: {
double *a = arg;
- long long ts = llrint(a[0] * (1000.0 / ctx->sub_speed));
+ long long ts = llrint(a[0] * 1000.0);
long long res = ass_step_sub(ctx->ass_track, ts, a[1]);
if (!res)
return false;
- a[0] = res / (1000.0 / ctx->sub_speed);
+ a[0] += res / 1000.0;
return true;
}
case SD_CTRL_SET_VIDEO_PARAMS:
@@ -692,13 +668,6 @@ 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;
- case SD_CTRL_UPDATE_SPEED:
- update_subtitle_speed(sd);
- return CONTROL_OK;
default:
return CONTROL_UNKNOWN;
}