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lavfi/avf_showspectrum: add error handle if av_asprintf return null

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add error handle if av_asprintf return null.

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
This commit is contained in:
Jun Zhao 2019-10-12 00:36:19 +08:00
parent 0ae6fb276b
commit 85e2b222e9
1 changed files with 10 additions and 0 deletions
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10
libavfilter/avf_showspectrum.c
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@ -695,11 +695,15 @@ static int draw_legend(AVFilterContext *ctx, int samples)
inlink->channel_layout);
text = av_asprintf("%d Hz | %s", inlink->sample_rate, chlayout_str);
if (!text)
return AVERROR(ENOMEM);
drawtext(s->outpicref, 2, outlink->h - 10, "CREATED BY LIBAVFILTER", 0);
drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, outlink->h - 10, text, 0);
if (s->stop) {
char *text = av_asprintf("Zoom: %d Hz - %d Hz", s->start, s->stop);
if (!text)
return AVERROR(ENOMEM);
drawtext(s->outpicref, outlink->w - 2 - strlen(text) * 10, 3, text, 0);
av_freep(&text);
}
@ -766,6 +770,8 @@ static int draw_legend(AVFilterContext *ctx, int samples)
for (x = 0; x < s->w && s->single_pic; x+=80) {
float seconds = x * spp / inlink->sample_rate;
char *units = get_time(ctx, seconds, x);
if (!units)
return AVERROR(ENOMEM);
drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->h + s->start_y + 6, units, 0);
drawtext(s->outpicref, s->start_x + x - 4 * strlen(units), s->start_y - 12, units, 0);
@ -822,6 +828,8 @@ static int draw_legend(AVFilterContext *ctx, int samples)
for (y = 0; y < s->h && s->single_pic; y+=40) {
float seconds = y * spp / inlink->sample_rate;
char *units = get_time(ctx, seconds, x);
if (!units)
return AVERROR(ENOMEM);
drawtext(s->outpicref, s->start_x - 8 * strlen(units) - 4, s->start_y + y - 4, units, 0);
av_free(units);
@ -1360,6 +1368,8 @@ static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
if (s->old_pts < outpicref->pts) {
if (s->legend) {
char *units = get_time(ctx, insamples->pts /(float)inlink->sample_rate, x);
if (!units)
return AVERROR(ENOMEM);
if (s->orientation == VERTICAL) {
for (y = 0; y < 10; y++) {