static int subtitle_thread(void *arg) { VideoState *is = arg; Frame *sp; int got_subtitle; double pts; int i; for (;;) { if (!(sp = frame_queue_peek_writable(&is->subpq))) return 0; if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0) break; pts = 0; if (got_subtitle && sp->sub.format == 0) { if (sp->sub.pts != AV_NOPTS_VALUE) pts = sp->sub.pts / (double)AV_TIME_BASE; sp->pts = pts; sp->serial = is->subdec.pkt_serial; for (i = 0; i < sp->sub.num_rects; i++) { int in_w = sp->sub.rects[i]->w; int in_h = sp->sub.rects[i]->h; int subw = is->subdec.avctx->width ? is->subdec.avctx->width : is->viddec_width; int subh = is->subdec.avctx->height ? is->subdec.avctx->height : is->viddec_height; int out_w = is->viddec_width ? in_w * is->viddec_width / subw : in_w; int out_h = is->viddec_height ? in_h * is->viddec_height / subh : in_h; AVPicture newpic; //can not use avpicture_alloc as it is not compatible with avsubtitle_free() av_image_fill_linesizes(newpic.linesize, AV_PIX_FMT_YUVA420P, out_w); newpic.data[0] = av_malloc(newpic.linesize[0] * out_h); newpic.data[3] = av_malloc(newpic.linesize[3] * out_h); newpic.data[1] = av_malloc(newpic.linesize[1] * ((out_h+1)/2)); newpic.data[2] = av_malloc(newpic.linesize[2] * ((out_h+1)/2)); is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx, in_w, in_h, AV_PIX_FMT_PAL8, out_w, out_h, AV_PIX_FMT_YUVA420P, sws_flags, NULL, NULL, NULL); if (!is->sub_convert_ctx || !newpic.data[0] || !newpic.data[3] || !newpic.data[1] || !newpic.data[2] ) { av_log(NULL, AV_LOG_FATAL, "Cannot initialize the sub conversion context\n"); exit(1); } sws_scale(is->sub_convert_ctx, (void*)sp->sub.rects[i]->pict.data, sp->sub.rects[i]->pict.linesize, 0, in_h, newpic.data, newpic.linesize); av_free(sp->sub.rects[i]->pict.data[0]); av_free(sp->sub.rects[i]->pict.data[1]); sp->sub.rects[i]->pict = newpic; sp->sub.rects[i]->w = out_w; sp->sub.rects[i]->h = out_h; sp->sub.rects[i]->x = sp->sub.rects[i]->x * out_w / in_w; sp->sub.rects[i]->y = sp->sub.rects[i]->y * out_h / in_h; } /* now we can update the picture count */ frame_queue_push(&is->subpq); } else if (got_subtitle) { avsubtitle_free(&sp->sub); } } return 0; }
static int subtitle_thread(void *arg) { VideoState *is = arg; Frame *sp; int got_subtitle; double pts; int i; for (;;) { if (!(sp = frame_queue_peek_writable(&is->subpq))) return 0; if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0) break; pts = 0; if (got_subtitle && sp->sub.format == 0) { if (sp->sub.pts != AV_NOPTS_VALUE) pts = sp->sub.pts / (double)AV_TIME_BASE; sp->pts = pts; sp->serial = is->subdec.pkt_serial; for (i = 0; i < sp->sub.num_rects; i++) { int in_w = sp->sub.rects[i]->w; int in_h = sp->sub.rects[i]->h; int subw = is->subdec.avctx->width ? is->subdec.avctx->width : is->viddec_width; int subh = is->subdec.avctx->height ? is->subdec.avctx->height : is->viddec_height; int out_w = is->viddec_width ? in_w * is->viddec_width / subw : in_w; int out_h = is->viddec_height ? in_h * is->viddec_height / subh : in_h; AVPicture newpic;  