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testcard: added gray pattern

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This commit is contained in:
Martin Pulec
2022-08-05 08:55:30 +02:00
parent 7670900724
commit e1a490b334
4 changed files with 61 additions and 5 deletions
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42
src/utils/video_pattern_generator.cpp
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@@ -484,11 +484,48 @@ struct still_image_video_pattern_generator : public video_pattern_generator {
}
};
struct gray_video_pattern_generator : public video_pattern_generator {
gray_video_pattern_generator(int w, int h, codec_t c)
: width(w), height(h), color_spec(c)
{
}
char *get_next() override {
int pixels = get_pf_block_pixels(color_spec);
unsigned char rgba[pixels * 4];
for (int i = 0; i < pixels * 4; ++i) {
rgba[i] = (i + 1) % 4 != 0 ? col : 0xFFU; // handle alpha
}
int dst_bs = get_pf_block_bytes(color_spec);
unsigned char dst[dst_bs];
testcard_convert_buffer(RGBA, color_spec, dst, rgba, pixels, 1);
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width / pixels; x += 1) {
memcpy(data.data() + y * vc_get_linesize(width, color_spec) + x * dst_bs, dst, dst_bs);
}
}
if ((col += step) > 0xFF) { // update color
col = 0;
}
return (char *) data.data();
}
private:
constexpr static int step = 16;
int width;
int height;
codec_t color_spec;
int col = 0;
long data_len = vc_get_datalen(width, height, color_spec);
vector<unsigned char> data = vector<unsigned char>(data_len);
};
video_pattern_generator_t
video_pattern_generator_create(std::string const & config, int width, int height, codec_t color_spec, int offset)
{
if (config == "help") {
cout << "Pattern to use, one of: " << BOLD("bars, blank, ebu_bars, gradient[=0x<AABBGGRR>], gradient2, noise, raw=0xXX[YYZZ..], smpte_bars, 0x<AABBGGRR>\n");
cout << "Pattern to use, one of: " << BOLD("bars, blank, ebu_bars, gradient[=0x<AABBGGRR>], gradient2, gray, noise, raw=0xXX[YYZZ..], smpte_bars, 0x<AABBGGRR>\n");
cout << "\t\t- patterns 'gradient2' and 'noise' generate full bit-depth patterns with";
for (codec_t c = VIDEO_CODEC_FIRST; c != VIDEO_CODEC_COUNT; c = static_cast<codec_t>(static_cast<int>(c) + 1)) {
if (get_decoder_from_to(RG48, c) != NULL) {
@@ -502,6 +539,9 @@ video_pattern_generator_create(std::string const & config, int width, int height
}
assert(width > 0 && height > 0);
try {
if (config == "gray") {
return new gray_video_pattern_generator{width, height, color_spec};
}
return new still_image_video_pattern_generator{config, width, height, color_spec, offset};
} catch (...) {
return nullptr;