/** @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;
}