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Add a check for maximum picture width and height for the given level

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Miika Metsoila 2017-11-15 16:39:59 +02:00
parent f9a4aba867
commit 4c1512e8c5
1 changed files with 21 additions and 0 deletions
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21
src/cfg.c
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@ -24,6 +24,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
kvz_config *kvz_config_alloc(void)
@ -1527,17 +1528,37 @@ static int validate_hevc_level(const kvz_config *const cfg) {
}
// check the conformance to the level limits
// luma samples
unsigned long cfg_samples = cfg->width * cfg->height;
// luma sample rate
double framerate = ((double)cfg->framerate_num) / ((double)cfg->framerate_denom);
unsigned long cfg_sample_rate = cfg_samples * (unsigned long) framerate;
// square of the maximum allowed dimension
unsigned int max_dimension_squared = 8 * max_lps;
// check maximum dimensions
if (cfg->width * cfg->width > max_dimension_squared) {
unsigned int max_dim = sqrtf(max_dimension_squared);
fprintf(stderr, "%s: picture width of %i is too large for this level, maximum is %i\n", level_err_prefix, cfg->width, max_dim);
level_error = 1;
}
if (cfg->height * cfg->height > max_dimension_squared) {
unsigned int max_dim = sqrtf(max_dimension_squared);
fprintf(stderr, "%s: picture height of %i is too large for this level, maximum is %i\n", level_err_prefix, cfg->height, max_dim);
level_error = 1;
}
// check luma picture size
if (cfg_samples > max_lps) {
fprintf(stderr, "%s: picture resolution of %ix%i is too big for this level (it has %ul samples, maximum is %ul samples)\n",
level_err_prefix, cfg->width, cfg->height, cfg_samples, max_lps);
level_error = 1;
}
// check luma sample rate
if (cfg_sample_rate > max_lsr) {
fprintf(stderr, "%s: framerate of %g is too big for this level and picture resolution (it has a sample rate of %ul, the maximum sample rate is %ul)\n",
level_err_prefix, framerate, cfg_sample_rate, max_lsr);