/** @This is the rendering function of the Thumbnail * */ void Thumbnail::render() { if ((uqueue_pop(uqueue2, void *)) != (void *)0){ printf("send QT signal to terminate the QT thread\n"); finished(); return; } size_t h, v, stride; uint8_t hsub, vsub, macropixel_size, macropixel; uint8_t *data; struct uref *uref = uref_pic_alloc(this->uref_mgr, this->ubuf_mgr, H, V); uref_pic_size(uref, &h, &v, ¯opixel); uref_pic_plane_size(uref, "b8g8r8a8", &stride, &hsub, &vsub, ¯opixel_size); uref_pic_plane_write(uref, "b8g8r8a8", 0, 0, -1, -1, &data); QSize S = QSize(H, V); view.resize(S); QPalette palette = view.palette(); palette.setBrush(QPalette::Background, Qt::transparent); view.page()->setPalette(palette); view.setAttribute(Qt::WA_OpaquePaintEvent, false); view.setAttribute(Qt::WA_NoSystemBackground, false); view.setAttribute(Qt::WA_TranslucentBackground, true); view.setAutoFillBackground(false); QImage image = QImage (data, h, v, stride, QImage::Format_ARGB32); image.fill(Qt::transparent); QPainter painter(&image); view.render(&painter); painter.end(); #if 0 printf("%d %d %d %d \n", data[0], data[1], data[2], data[3]); #endif uref_pic_plane_unmap(uref, "b8g8r8a8", 0, 0, -1, -1); uqueue_push(uqueue, uref); }
static void fill_pic(struct uref *uref, int counter) { size_t hsize, vsize; uint8_t macropixel; assert(ubase_check(uref_pic_size(uref, &hsize, &vsize, ¯opixel))); const char *chroma = NULL; while (ubase_check(uref_pic_plane_iterate(uref, &chroma)) && chroma != NULL) { size_t stride; uint8_t hsub, vsub, macropixel_size; assert(ubase_check(uref_pic_plane_size(uref, chroma, &stride, &hsub, &vsub, ¯opixel_size))); int hoctets = hsize * macropixel_size / hsub / macropixel; uint8_t *buffer; assert(ubase_check(uref_pic_plane_write(uref, chroma, 0, 0, -1, -1, &buffer))); for (int y = 0; y < vsize / vsub; y++) { for (int x = 0; x < hoctets; x++) buffer[x] = 1 + (y * hoctets) + x + counter * 5; buffer += stride; } assert(ubase_check(uref_pic_plane_unmap(uref, chroma, 0, 0, -1, -1))); } }
/** @internal @This handles data. * * @param upipe description structure of the pipe * @param uref uref structure describing the picture * @param upump_p reference to pump that generated the buffer * @return true if the packet was handled */ static bool upipe_audiobar_handle(struct upipe *upipe, struct uref *uref, struct upump **upump_p) { struct upipe_audiobar *upipe_audiobar = upipe_audiobar_from_upipe(upipe); const char *def; if (unlikely(ubase_check(uref_flow_get_def(uref, &def)))) { UBASE_FATAL(upipe, uref_sound_flow_get_channels(uref, &upipe_audiobar->channels)) uref_sound_flow_clear_format(uref); UBASE_FATAL(upipe, uref_attr_import(uref, upipe_audiobar->flow_def_config)) uref_pic_flow_clear_format(uref); UBASE_FATAL(upipe, uref_pic_flow_set_planes(uref, 0)) UBASE_FATAL(upipe, uref_pic_flow_set_macropixel(uref, 1)) UBASE_FATAL(upipe, uref_pic_flow_add_plane(uref, 1, 1, 1, "y8")) UBASE_FATAL(upipe, uref_pic_flow_add_plane(uref, 2, 1, 1, "u8")) UBASE_FATAL(upipe, uref_pic_flow_add_plane(uref, 2, 1, 1, "v8")) UBASE_FATAL(upipe, uref_pic_flow_add_plane(uref, 1, 1, 1, "a8")) UBASE_FATAL(upipe, uref_pic_set_progressive(uref)) upipe_audiobar->hsize = upipe_audiobar->vsize = upipe_audiobar->sep_width = upipe_audiobar->pad_width = UINT64_MAX; upipe_audiobar_require_flow_format(upipe, uref); return true; } if (!upipe_audiobar->ubuf_mgr) return false; if (unlikely(upipe_audiobar->hsize == UINT64_MAX)) return false; struct ubuf *ubuf = ubuf_pic_alloc(upipe_audiobar->ubuf_mgr, upipe_audiobar->hsize, upipe_audiobar->vsize); uref_attach_ubuf(uref, ubuf); uint8_t *dst[4]; size_t strides[4]; uint8_t hsubs[4]; uint8_t vsubs[4]; static const char *chroma[4] = { "y8", "u8", "v8", "a8" }; for (int i = 0; i < 4; i++) { if (unlikely(!ubase_check(uref_pic_plane_write(uref, chroma[i], 0, 0, -1, -1, &dst[i])) || !ubase_check(uref_pic_plane_size(uref, chroma[i], &strides[i], &hsubs[i], &vsubs[i], NULL)))) { upipe_throw_fatal(upipe, UBASE_ERR_ALLOC); uref_free(uref); return true; } } uint8_t alpha = upipe_audiobar->alpha; uint64_t h = upipe_audiobar->vsize; const int hred = h - (iec_scale(-8.) * h); const int hyellow = h - (iec_scale(-18.) * h); uint8_t transparent[4] = { 0x10, 0x80, 0x80, 0 }; uint8_t black[4] = { 0x10, 0x80, 0x80, alpha }; uint8_t red[2][4] = { { 76, 85, 0xff, alpha }, { 37, 106, 191, alpha } }; uint8_t green[2][4] = { { 150, 44, 21, alpha }, { 74, 85, 74, alpha } }; uint8_t yellow[2][4] = { { 226, 1, 148, alpha }, { 112, 64, 138, alpha } }; uint64_t pts = 0; if (unlikely(!ubase_check(uref_clock_get_pts_prog(uref, &pts)))) { upipe_warn(upipe, "unable to read pts"); } for (uint8_t chan = 0; chan < upipe_audiobar->channels; chan++) { double amplitude = 0.; if (unlikely(!ubase_check(uref_amax_get_amplitude(uref, &litude, chan)))) upipe_warn_va(upipe, "unable to get amplitude for channel %"PRIu8", assuming silence", chan); double scale = log10(amplitude) * 20; // IEC-268-18 return time speed is 20dB per 1.7s (+/- .3) if (upipe_audiobar->peak_date[chan]) upipe_audiobar->peak[chan] -= 20 * (pts - upipe_audiobar->peak_date[chan]) / (1.7 * UCLOCK_FREQ); upipe_audiobar->peak_date[chan] = pts; if (scale >= upipe_audiobar->peak[chan]) /* higher than lowered peak */ upipe_audiobar->peak[chan] = scale; else /* Current amplitude can not go below the lowered peak value */ scale = upipe_audiobar->peak[chan]; scale = iec_scale(scale); const int hmax = h - scale * h; for (int row = 0; row < h; row++) { bool bright = row > hmax; const uint8_t *color = row < hred ? red[!bright] : row < hyellow ? yellow[!bright] : green[!bright]; copy_color(dst, strides, hsubs, vsubs, color, row, chan * upipe_audiobar->chan_width, upipe_audiobar->chan_width); if (chan && upipe_audiobar->sep_width) copy_color(dst, strides, hsubs, vsubs, black, row, chan * upipe_audiobar->chan_width - upipe_audiobar->sep_width / 2, upipe_audiobar->sep_width); if (chan == upipe_audiobar->channels - 1 && upipe_audiobar->pad_width) copy_color(dst, strides, hsubs, vsubs, transparent, row, (chan + 1) * upipe_audiobar->chan_width, upipe_audiobar->pad_width); } } /* dB marks */ for (int i = 1; i <= 6; i++) { int row = h - (iec_scale(-10 * i) * h); copy_color(dst, strides, hsubs, vsubs, black, row, 0, upipe_audiobar->hsize); } for (int i = 0; i < 4; i++) ubuf_pic_plane_unmap(ubuf, chroma[i], 0, 0, -1, -1); upipe_audiobar_output(upipe, uref, upump_p); return true; }