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avfilter/avf_showwolume: add orientation and step option

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-02-27 17:27:23 +01:00
parent 653af9f188
commit e266d29978
2 changed files with 107 additions and 37 deletions
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12
doc/filters.texi
View File

@ -15762,10 +15762,10 @@ Set video rate.
Set border width, allowed range is [0, 5]. Default is 1.
@item w
Set channel width, allowed range is [80, 1080]. Default is 400.
Set channel width, allowed range is [80, 8192]. Default is 400.
@item h
Set channel height, allowed range is [1, 100]. Default is 20.
Set channel height, allowed range is [1, 900]. Default is 20.
@item f
Set fade, allowed range is [0.001, 1]. Default is 0.95.
@ -15788,6 +15788,14 @@ If set, displays channel names. Default is enabled.
@item v
If set, displays volume values. Default is enabled.
@item o
Set orientation, can be @code{horizontal} or @code{vertical},
default is @code{horizontal}.
@item s
Set step size, allowed range s [0, 5]. Default is 0, which means
step is disabled.
@end table
@section showwaves

132
libavfilter/avf_showvolume.c
View File

@ -41,6 +41,8 @@ typedef struct ShowVolumeContext {
double f;
AVRational frame_rate;
char *color;
int orientation;
int step;
AVFrame *out;
AVExpr *c_expr;
@ -56,12 +58,16 @@ static const AVOption showvolume_options[] = {
{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, 0, FLAGS },
{ "b", "set border width", OFFSET(b), AV_OPT_TYPE_INT, {.i64=1}, 0, 5, FLAGS },
{ "w", "set channel width", OFFSET(w), AV_OPT_TYPE_INT, {.i64=400}, 80, 1080, FLAGS },
{ "h", "set channel height", OFFSET(h), AV_OPT_TYPE_INT, {.i64=20}, 1, 100, FLAGS },
{ "w", "set channel width", OFFSET(w), AV_OPT_TYPE_INT, {.i64=400}, 80, 8192, FLAGS },
{ "h", "set channel height", OFFSET(h), AV_OPT_TYPE_INT, {.i64=20}, 1, 900, FLAGS },
{ "f", "set fade", OFFSET(f), AV_OPT_TYPE_DOUBLE, {.dbl=0.95}, 0.001, 1, FLAGS },
{ "c", "set volume color expression", OFFSET(color), AV_OPT_TYPE_STRING, {.str="if(gte(VOLUME,-6), if(gte(VOLUME,-2), if(gte(VOLUME,-1), if(gt(VOLUME,0), 0xff0000ff, 0xff0066ff), 0xff00ffff),0xff00ff00),0xffff0000)"}, 0, 0, FLAGS },
{ "t", "display channel names", OFFSET(draw_text), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "v", "display volume value", OFFSET(draw_volume), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "o", "set orientation", OFFSET(orientation), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "orientation" },
{ "h", "horizontal", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "orientation" },
{ "v", "vertical", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "orientation" },
{ "s", "set step size", OFFSET(step), AV_OPT_TYPE_INT, {.i64=0}, 0, 5, FLAGS },
{ NULL }
};
@ -132,15 +138,21 @@ static int config_output(AVFilterLink *outlink)
ShowVolumeContext *s = outlink->src->priv;
AVFilterLink *inlink = outlink->src->inputs[0];
outlink->w = s->w;
outlink->h = s->h * inlink->channels + (inlink->channels - 1) * s->b;
if (s->orientation) {
outlink->h = s->w;
outlink->w = s->h * inlink->channels + (inlink->channels - 1) * s->b;
} else {
outlink->w = s->w;
outlink->h = s->h * inlink->channels + (inlink->channels - 1) * s->b;
}
outlink->sample_aspect_ratio = (AVRational){1,1};
outlink->frame_rate = s->frame_rate;
return 0;
}
static void drawtext(AVFrame *pic, int x, int y, const char *txt)
static void drawtext(AVFrame *pic, int x, int y, const char *txt, int o)
{
const uint8_t *font;
int font_height;
@ -150,15 +162,26 @@ static void drawtext(AVFrame *pic, int x, int y, const char *txt)
for (i = 0; txt[i]; i++) {
int char_y, mask;
uint8_t *p = pic->data[0] + y*pic->linesize[0] + (x + i*8)*4;
for (char_y = 0; char_y < font_height; char_y++) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
AV_WN32(p, ~AV_RN32(p));
p += 4;
if (o) {
for (char_y = font_height - 1; char_y >= 0; char_y--) {
uint8_t *p = pic->data[0] + (y + i * 10) * pic->linesize[0] + x * 4;
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
AV_WN32(&p[char_y * 4], ~AV_RN32(&p[char_y * 4]));
p += pic->linesize[0];
}
}
} else {
uint8_t *p = pic->data[0] + y * pic->linesize[0] + (x + i * 8) * 4;
for (char_y = 0; char_y < font_height; char_y++) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
AV_WN32(p, ~AV_RN32(p));
p += 4;
}
p += pic->linesize[0] - 8 * 4;
}
p += pic->linesize[0] - 8*4;
}
}
}
@ -168,6 +191,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ShowVolumeContext *s = ctx->priv;
const int step = s->step;
int c, i, j, k;
AVFrame *out;
@ -187,7 +211,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
for (j = 0; j < outlink->h; j++) {
uint8_t *dst = s->out->data[0] + j * s->out->linesize[0];
for (k = 0; k < s->w; k++) {
for (k = 0; k < outlink->w; k++) {
dst[k * 4 + 0] = FFMAX(dst[k * 4 + 0] * s->f, 0);
dst[k * 4 + 1] = FFMAX(dst[k * 4 + 1] * s->f, 0);
dst[k * 4 + 2] = FFMAX(dst[k * 4 + 2] * s->f, 0);
@ -195,29 +219,61 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
}
}
for (c = 0; c < inlink->channels; c++) {
float *src = (float *)insamples->extended_data[c];
float max = 0;
uint32_t color;
if (s->orientation) {
for (c = 0; c < inlink->channels; c++) {
float *src = (float *)insamples->extended_data[c];
float max = 0;
uint32_t color;
for (i = 0; i < insamples->nb_samples; i++)
max = FFMAX(max, src[i]);
for (i = 0; i < insamples->nb_samples; i++)
max = FFMAX(max, src[i]);
s->values[c * VAR_VARS_NB + VAR_VOLUME] = 20.0 * log10(max);
max = av_clipf(max, 0, 1);
s->values[c * VAR_VARS_NB + VAR_CHANNEL] = c;
color = av_expr_eval(s->c_expr, &s->values[c * VAR_VARS_NB], NULL);
s->values[c * VAR_VARS_NB + VAR_VOLUME] = 20.0 * log10(max);
max = av_clipf(max, 0, 1);
s->values[c * VAR_VARS_NB + VAR_CHANNEL] = c;
color = av_expr_eval(s->c_expr, &s->values[c * VAR_VARS_NB], NULL);
for (j = 0; j < s->h; j++) {
uint8_t *dst = s->out->data[0] + (c * s->h + c * s->b + j) * s->out->linesize[0];
for (j = outlink->h - outlink->h * max; j < outlink->h; j++) {
uint8_t *dst = s->out->data[0] + j * s->out->linesize[0] + c * (s->b + s->h) * 4;
for (k = 0; k < s->h; k++) {
AV_WN32A(&dst[k * 4], color);
if (j & step)
j += step;
}
}
for (k = 0; k < s->w * max; k++)
AV_WN32A(dst + k * 4, color);
if (outlink->h > 40 && s->draw_text)
drawtext(s->out, c * (s->h + s->b) + (s->h - 10) / 2, outlink->h - 35,
av_get_channel_name(av_channel_layout_extract_channel(insamples->channel_layout, c)), 1);
}
} else {
for (c = 0; c < inlink->channels; c++) {
float *src = (float *)insamples->extended_data[c];
float max = 0;
uint32_t color;
if (s->h >= 8 && s->draw_text)
drawtext(s->out, 2, c * (s->h + s->b) + (s->h - 8) / 2,
av_get_channel_name(av_channel_layout_extract_channel(insamples->channel_layout, c)));
for (i = 0; i < insamples->nb_samples; i++)
max = FFMAX(max, src[i]);
s->values[c * VAR_VARS_NB + VAR_VOLUME] = 20.0 * log10(max);
max = av_clipf(max, 0, 1);
s->values[c * VAR_VARS_NB + VAR_CHANNEL] = c;
color = av_expr_eval(s->c_expr, &s->values[c * VAR_VARS_NB], NULL);
for (j = 0; j < s->h; j++) {
uint8_t *dst = s->out->data[0] + (c * s->h + c * s->b + j) * s->out->linesize[0];
for (k = 0; k < s->w * max; k++) {
AV_WN32A(dst + k * 4, color);
if (k & step)
k += step;
}
}
if (s->h >= 8 && s->draw_text)
drawtext(s->out, 2, c * (s->h + s->b) + (s->h - 8) / 2,
av_get_channel_name(av_channel_layout_extract_channel(insamples->channel_layout, c)), 0);
}
}
av_frame_free(&insamples);
@ -227,11 +283,17 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
av_frame_make_writable(out);
for (c = 0; c < inlink->channels && s->draw_volume; c++) {
if (s->h >= 8) {
char buf[16];
snprintf(buf, sizeof(buf), "%.2f", s->values[c * VAR_VARS_NB + VAR_VOLUME]);
drawtext(out, FFMAX(0, s->w - 8 * (int)strlen(buf)), c * (s->h + s->b) + (s->h - 8) / 2, buf);
char buf[16];
if (s->orientation) {
if (s->h >= 8) {
snprintf(buf, sizeof(buf), "%.2f", s->values[c * VAR_VARS_NB + VAR_VOLUME]);
drawtext(out, c * (s->h + s->b) + (s->h - 8) / 2, 2, buf, 1);
}
} else {
if (s->h >= 8) {
snprintf(buf, sizeof(buf), "%.2f", s->values[c * VAR_VARS_NB + VAR_VOLUME]);
drawtext(out, FFMAX(0, s->w - 8 * (int)strlen(buf)), c * (s->h + s->b) + (s->h - 8) / 2, buf, 0);
}
}
}