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Code Issues Releases Activity

lavc/ccaption_dec: reap_screen() is responsible for clearing output buffer and signaling screen_changed

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moves the screen_changed bit and the bprint_clear into reap_screen() so
the logic is centralized and callers do not need to touch the bit or the
buffer before calling reap_screen()
This commit is contained in:
Aman Gupta 2016-01-05 14:53:29 -08:00 committed by Clément Bœsch
parent dc79824deb
commit 53ee84f811
1 changed files with 5 additions and 5 deletions
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10
libavcodec/ccaption_dec.c
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@ -282,6 +282,7 @@ static int reap_screen(CCaptionSubContext *ctx, int64_t pts)
int ret = 0;
struct Screen *screen = ctx->screen + ctx->active_screen;
ctx->start_time = ctx->startv_time;
av_bprint_clear(&ctx->buffer);
for (i = 0; screen->row_used && i < SCREEN_ROWS; i++)
{
@ -298,12 +299,14 @@ static int reap_screen(CCaptionSubContext *ctx, int64_t pts)
break;
}
}
}
if (screen->row_used && ctx->buffer.len >= 2) {
ctx->buffer.len -= 2;
ctx->buffer.str[ctx->buffer.len] = 0;
ctx->screen_changed = 1;
}
ctx->startv_time = pts;
ctx->end_time = pts;
return ret;
@ -367,7 +370,6 @@ static void handle_edm(CCaptionSubContext *ctx, int64_t pts)
reap_screen(ctx, pts);
screen->row_used = 0;
ctx->screen_changed = 1;
}
static void handle_eoc(CCaptionSubContext *ctx, int64_t pts)
@ -460,7 +462,6 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
ff_dlog(ctx, "carriage return\n");
reap_screen(ctx, pts);
roll_up(ctx);
ctx->screen_changed = 1;
ctx->cursor_column = 0;
break;
case 0x2f:
@ -514,7 +515,7 @@ static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avp
continue;
else
process_cc608(ctx, avpkt->pts, *(bptr + i + 1) & 0x7f, *(bptr + i + 2) & 0x7f);
if (ctx->screen_changed && *ctx->buffer.str)
if (ctx->screen_changed)
{
int start_time = av_rescale_q(ctx->start_time, avctx->time_base, (AVRational){ 1, 100 });
int end_time = av_rescale_q(ctx->end_time, avctx->time_base, (AVRational){ 1, 100 });
@ -524,7 +525,6 @@ static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avp
return ret;
sub->pts = av_rescale_q(ctx->start_time, avctx->time_base, AV_TIME_BASE_Q);
ctx->screen_changed = 0;
av_bprint_clear(&ctx->buffer);
}
}