mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter/avf_showwaves: color support
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
1dd11160ea
commit
6ed3a10f64
|
|
@ -24,6 +24,7 @@
|
|||
*/
|
||||
|
||||
#include "libavutil/avassert.h"
|
||||
#include "libavutil/avstring.h"
|
||||
#include "libavutil/channel_layout.h"
|
||||
#include "libavutil/opt.h"
|
||||
#include "libavutil/parseutils.h"
|
||||
|
|
@ -50,15 +51,18 @@ typedef struct {
|
|||
const AVClass *class;
|
||||
int w, h;
|
||||
AVRational rate;
|
||||
char *colors;
|
||||
int buf_idx;
|
||||
int16_t *buf_idy; /* y coordinate of previous sample for each channel */
|
||||
AVFrame *outpicref;
|
||||
int n;
|
||||
int pixstep;
|
||||
int sample_count_mod;
|
||||
int mode; ///< ShowWavesMode
|
||||
int split_channels;
|
||||
uint8_t *fg;
|
||||
void (*draw_sample)(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y, int intensity);
|
||||
int16_t sample, int16_t *prev_y, const uint8_t color[4]);
|
||||
|
||||
/* single picture */
|
||||
int single_pic;
|
||||
|
|
@ -83,6 +87,7 @@ static const AVOption showwaves_options[] = {
|
|||
{ "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
|
||||
{ "r", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, FLAGS },
|
||||
{ "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
|
||||
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
|
|
@ -94,6 +99,7 @@ static av_cold void uninit(AVFilterContext *ctx)
|
|||
|
||||
av_frame_free(&showwaves->outpicref);
|
||||
av_freep(&showwaves->buf_idy);
|
||||
av_freep(&showwaves->fg);
|
||||
|
||||
if (showwaves->single_pic) {
|
||||
struct frame_node *node = showwaves->audio_frames;
|
||||
|
|
@ -116,7 +122,7 @@ static int query_formats(AVFilterContext *ctx)
|
|||
AVFilterLink *inlink = ctx->inputs[0];
|
||||
AVFilterLink *outlink = ctx->outputs[0];
|
||||
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
|
||||
static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
|
||||
static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
|
||||
int ret;
|
||||
|
||||
/* set input audio formats */
|
||||
|
|
@ -140,12 +146,147 @@ static int query_formats(AVFilterContext *ctx)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void draw_sample_point_rgba(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height) {
|
||||
buf[h * linesize + 0] += color[0];
|
||||
buf[h * linesize + 1] += color[1];
|
||||
buf[h * linesize + 2] += color[2];
|
||||
buf[h * linesize + 3] += color[3];
|
||||
}
|
||||
}
|
||||
|
||||
static void draw_sample_line_rgba(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
int start = height/2;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start; k < end; k++) {
|
||||
buf[k * linesize + 0] += color[0];
|
||||
buf[k * linesize + 1] += color[1];
|
||||
buf[k * linesize + 2] += color[2];
|
||||
buf[k * linesize + 3] += color[3];
|
||||
}
|
||||
}
|
||||
|
||||
static void draw_sample_p2p_rgba(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height) {
|
||||
buf[h * linesize + 0] += color[0];
|
||||
buf[h * linesize + 1] += color[1];
|
||||
buf[h * linesize + 2] += color[2];
|
||||
buf[h * linesize + 3] += color[3];
|
||||
if (*prev_y && h != *prev_y) {
|
||||
int start = *prev_y;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start + 1; k < end; k++) {
|
||||
buf[k * linesize + 0] += color[0];
|
||||
buf[k * linesize + 1] += color[1];
|
||||
buf[k * linesize + 2] += color[2];
|
||||
buf[k * linesize + 3] += color[3];
|
||||
}
|
||||
}
|
||||
}
|
||||
*prev_y = h;
|
||||
}
|
||||
|
||||
static void draw_sample_cline_rgba(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = av_rescale(abs(sample), height, INT16_MAX);
|
||||
const int start = (height - h) / 2;
|
||||
const int end = start + h;
|
||||
for (k = start; k < end; k++) {
|
||||
buf[k * linesize + 0] += color[0];
|
||||
buf[k * linesize + 1] += color[1];
|
||||
buf[k * linesize + 2] += color[2];
|
||||
buf[k * linesize + 3] += color[3];
|
||||
}
|
||||
}
|
||||
|
||||
static void draw_sample_point_gray(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height)
|
||||
buf[h * linesize] += color[0];
|
||||
}
|
||||
|
||||
static void draw_sample_line_gray(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
int start = height/2;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start; k < end; k++)
|
||||
buf[k * linesize] += color[0];
|
||||
}
|
||||
|
||||
static void draw_sample_p2p_gray(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height) {
|
||||
buf[h * linesize] += color[0];
|
||||
if (*prev_y && h != *prev_y) {
|
||||
int start = *prev_y;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start + 1; k < end; k++)
|
||||
buf[k * linesize] += color[0];
|
||||
}
|
||||
}
|
||||
*prev_y = h;
|
||||
}
|
||||
|
||||
static void draw_sample_cline_gray(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y,
|
||||
const uint8_t color[4])
|
||||
{
|
||||
int k;
|
||||
const int h = av_rescale(abs(sample), height, INT16_MAX);
|
||||
const int start = (height - h) / 2;
|
||||
const int end = start + h;
|
||||
for (k = start; k < end; k++)
|
||||
buf[k * linesize] += color[0];
|
||||
}
|
||||
|
||||
static int config_output(AVFilterLink *outlink)
|
||||
{
|
||||
AVFilterContext *ctx = outlink->src;
|
||||
AVFilterLink *inlink = ctx->inputs[0];
|
||||
ShowWavesContext *showwaves = ctx->priv;
|
||||
int nb_channels = inlink->channels;
|
||||
char *colors, *saveptr = NULL;
|
||||
uint8_t x;
|
||||
int ch;
|
||||
|
||||
if (showwaves->single_pic)
|
||||
showwaves->n = 1;
|
||||
|
||||
if (!showwaves->n)
|
||||
showwaves->n = FFMAX(1, ((double)inlink->sample_rate / (showwaves->w * av_q2d(showwaves->rate))) + 0.5);
|
||||
|
|
@ -164,6 +305,62 @@ static int config_output(AVFilterLink *outlink)
|
|||
|
||||
av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d r:%f n:%d\n",
|
||||
showwaves->w, showwaves->h, av_q2d(outlink->frame_rate), showwaves->n);
|
||||
|
||||
switch (outlink->format) {
|
||||
case AV_PIX_FMT_GRAY8:
|
||||
switch (showwaves->mode) {
|
||||
case MODE_POINT: showwaves->draw_sample = draw_sample_point_gray; break;
|
||||
case MODE_LINE: showwaves->draw_sample = draw_sample_line_gray; break;
|
||||
case MODE_P2P: showwaves->draw_sample = draw_sample_p2p_gray; break;
|
||||
case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline_gray; break;
|
||||
default:
|
||||
return AVERROR_BUG;
|
||||
}
|
||||
showwaves->pixstep = 1;
|
||||
break;
|
||||
case AV_PIX_FMT_RGBA:
|
||||
switch (showwaves->mode) {
|
||||
case MODE_POINT: showwaves->draw_sample = draw_sample_point_rgba; break;
|
||||
case MODE_LINE: showwaves->draw_sample = draw_sample_line_rgba; break;
|
||||
case MODE_P2P: showwaves->draw_sample = draw_sample_p2p_rgba; break;
|
||||
case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline_rgba; break;
|
||||
default:
|
||||
return AVERROR_BUG;
|
||||
}
|
||||
showwaves->pixstep = 4;
|
||||
break;
|
||||
}
|
||||
|
||||
showwaves->fg = av_malloc_array(nb_channels, 4 * sizeof(*showwaves->fg));
|
||||
if (!showwaves->fg)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
colors = av_strdup(showwaves->colors);
|
||||
if (!colors)
|
||||
return AVERROR(ENOMEM);
|
||||
|
||||
/* multiplication factor, pre-computed to avoid in-loop divisions */
|
||||
x = 255 / ((showwaves->split_channels ? 1 : nb_channels) * showwaves->n);
|
||||
if (outlink->format == AV_PIX_FMT_RGBA) {
|
||||
uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff };
|
||||
|
||||
for (ch = 0; ch < nb_channels; ch++) {
|
||||
char *color;
|
||||
|
||||
color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr);
|
||||
if (color)
|
||||
av_parse_color(fg, color, -1, ctx);
|
||||
showwaves->fg[4*ch + 0] = fg[0] * x / 255.;
|
||||
showwaves->fg[4*ch + 1] = fg[1] * x / 255.;
|
||||
showwaves->fg[4*ch + 2] = fg[2] * x / 255.;
|
||||
showwaves->fg[4*ch + 3] = fg[3] * x / 255.;
|
||||
}
|
||||
} else {
|
||||
for (ch = 0; ch < nb_channels; ch++)
|
||||
showwaves->fg[4 * ch + 0] = x;
|
||||
}
|
||||
av_free(colors);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -192,9 +389,9 @@ static int push_single_pic(AVFilterLink *outlink)
|
|||
AVFrame *out = showwaves->outpicref;
|
||||
struct frame_node *node;
|
||||
const int nb_channels = inlink->channels;
|
||||
const int x = 255 / (showwaves->split_channels ? 1 : nb_channels);
|
||||
const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
|
||||
const int linesize = out->linesize[0];
|
||||
const int pixstep = showwaves->pixstep;
|
||||
int col = 0;
|
||||
int64_t *sum = showwaves->sum;
|
||||
|
||||
|
|
@ -220,11 +417,11 @@ static int push_single_pic(AVFilterLink *outlink)
|
|||
if (n++ == max_samples) {
|
||||
for (ch = 0; ch < nb_channels; ch++) {
|
||||
int16_t sample = sum[ch] / max_samples;
|
||||
uint8_t *buf = out->data[0] + col;
|
||||
uint8_t *buf = out->data[0] + col * pixstep;
|
||||
if (showwaves->split_channels)
|
||||
buf += ch*ch_height*linesize;
|
||||
av_assert0(col < outlink->w);
|
||||
showwaves->draw_sample(buf, ch_height, linesize, sample, &showwaves->buf_idy[ch], x);
|
||||
showwaves->draw_sample(buf, ch_height, linesize, sample, &showwaves->buf_idy[ch], &showwaves->fg[ch * 4]);
|
||||
sum[ch] = 0;
|
||||
}
|
||||
col++;
|
||||
|
|
@ -254,57 +451,6 @@ static int request_frame(AVFilterLink *outlink)
|
|||
return ret;
|
||||
}
|
||||
|
||||
static void draw_sample_point(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y, int intensity)
|
||||
{
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height)
|
||||
buf[h * linesize] += intensity;
|
||||
}
|
||||
|
||||
static void draw_sample_line(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y, int intensity)
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
int start = height/2;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start; k < end; k++)
|
||||
buf[k * linesize] += intensity;
|
||||
}
|
||||
|
||||
static void draw_sample_p2p(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y, int intensity)
|
||||
{
|
||||
int k;
|
||||
const int h = height/2 - av_rescale(sample, height/2, INT16_MAX);
|
||||
if (h >= 0 && h < height) {
|
||||
buf[h * linesize] += intensity;
|
||||
if (*prev_y && h != *prev_y) {
|
||||
int start = *prev_y;
|
||||
int end = av_clip(h, 0, height-1);
|
||||
if (start > end)
|
||||
FFSWAP(int16_t, start, end);
|
||||
for (k = start + 1; k < end; k++)
|
||||
buf[k * linesize] += intensity;
|
||||
}
|
||||
}
|
||||
*prev_y = h;
|
||||
}
|
||||
|
||||
static void draw_sample_cline(uint8_t *buf, int height, int linesize,
|
||||
int16_t sample, int16_t *prev_y, int intensity)
|
||||
{
|
||||
int k;
|
||||
const int h = av_rescale(abs(sample), height, INT16_MAX);
|
||||
const int start = (height - h) / 2;
|
||||
const int end = start + h;
|
||||
for (k = start; k < end; k++)
|
||||
buf[k * linesize] += intensity;
|
||||
}
|
||||
|
||||
static int alloc_out_frame(ShowWavesContext *showwaves, const int16_t *p,
|
||||
const AVFilterLink *inlink, AVFilterLink *outlink,
|
||||
const AVFrame *in)
|
||||
|
|
@ -321,7 +467,7 @@ static int alloc_out_frame(ShowWavesContext *showwaves, const int16_t *p,
|
|||
av_make_q(1, inlink->sample_rate),
|
||||
outlink->time_base);
|
||||
for (j = 0; j < outlink->h; j++)
|
||||
memset(out->data[0] + j*out->linesize[0], 0, outlink->w);
|
||||
memset(out->data[0] + j*out->linesize[0], 0, outlink->w * showwaves->pixstep);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -335,14 +481,6 @@ static av_cold int init(AVFilterContext *ctx)
|
|||
showwaves->mode = MODE_CENTERED_LINE;
|
||||
}
|
||||
|
||||
switch (showwaves->mode) {
|
||||
case MODE_POINT: showwaves->draw_sample = draw_sample_point; break;
|
||||
case MODE_LINE: showwaves->draw_sample = draw_sample_line; break;
|
||||
case MODE_P2P: showwaves->draw_sample = draw_sample_p2p; break;
|
||||
case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline; break;
|
||||
default:
|
||||
return AVERROR_BUG;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -358,8 +496,8 @@ static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
|
|||
int16_t *p = (int16_t *)insamples->data[0];
|
||||
int nb_channels = inlink->channels;
|
||||
int i, j, ret = 0;
|
||||
const int pixstep = showwaves->pixstep;
|
||||
const int n = showwaves->n;
|
||||
const int x = 255 / ((showwaves->split_channels ? 1 : nb_channels) * n); /* multiplication factor, pre-computed to avoid in-loop divisions */
|
||||
const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
|
||||
|
||||
/* draw data in the buffer */
|
||||
|
|
@ -371,12 +509,12 @@ static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
|
|||
outpicref = showwaves->outpicref;
|
||||
|
||||
for (j = 0; j < nb_channels; j++) {
|
||||
uint8_t *buf = outpicref->data[0] + showwaves->buf_idx;
|
||||
uint8_t *buf = outpicref->data[0] + showwaves->buf_idx * pixstep;
|
||||
const int linesize = outpicref->linesize[0];
|
||||
if (showwaves->split_channels)
|
||||
buf += j*ch_height*linesize;
|
||||
showwaves->draw_sample(buf, ch_height, linesize, *p++,
|
||||
&showwaves->buf_idy[j], x);
|
||||
&showwaves->buf_idy[j], &showwaves->fg[j * 4]);
|
||||
}
|
||||
|
||||
showwaves->sample_count_mod++;
|
||||
|
|
@ -437,6 +575,7 @@ static const AVOption showwavespic_options[] = {
|
|||
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
|
||||
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
|
||||
{ "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
|
||||
{ "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue