testcard_common.c

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#ifdef HAVE_CONFIG_H
#include "config.h"
#include "config_unix.h"
#include "config_win32.h"
#endif // HAVE_CONFIG_H
 
#include "pixfmt_conv.h"
#include "utils/color_out.h"
#include "video.h"
#include "video_capture/testcard_common.h"
 
const uint32_t rect_colors[] = {
        0xff0000ffLU,
        0xff00ff00LU,
        0xffff0000LU,
        0xff00ffffLU,
        0xffffff00LU,
        0xffff00ffLU
};
 
void testcard_fillRect(struct testcard_pixmap *s, struct testcard_rect *r, uint32_t color)
{
        uint32_t *data = s->data;
 
        for (int cur_x = r->x; cur_x < r->x + r->w; ++cur_x) {
                for (int cur_y = r->y; cur_y < r->y + r->h; ++cur_y) {
                        if (cur_x < s->w) {
                                *(data + (long) s->w * cur_y + cur_x) = color;
                        }
                }
        }
}
 
static void toI420(unsigned char *out, const unsigned char *input, int width, int height)
{
        const unsigned char *in = (const unsigned char *) input;
        int w_ch = (width + 1) / 2;
        int h_ch = (height + 1) / 2;
        unsigned char *y = out;
        unsigned char *u0 = out + width * height;
        unsigned char *v0 = out + width * height + w_ch * h_ch;
        unsigned char *u1 = u0, *v1 = v0;
 
        for (int i = 0; i < height; i += 1) {
                for (int j = 0; j < ((width + 1) & ~1); j += 2) {
                        // U
                        if (i % 2 == 0) {
                                *u0++ = *in++;
                        } else { // average with every 2nd row
                                *u1 = (*u1 + *in++) / 2;
                                u1++;
                        }
                        // Y
                        *y++ = *in++;
                        // V
                        if (i % 2 == 0) {
                                *v0++ = *in++;
                        } else { // average with every 2nd row
                                *v1 = (*v1 + *in++) / 2;
                                v1++;
                        }
                        // Y
                        if (j + 1 == width) {
                                in++;
                        } else {
                                *y++ = *in++;
                        }
                }
        }
}
 
void testcard_convert_buffer(codec_t in_c, codec_t out_c, unsigned char *out, unsigned const char *in, int width, int height)
{
        unsigned char *tmp_buffer = NULL;
        if (out_c == I420 || out_c == YUYV || (in_c == RGBA && out_c == v210)) {
                decoder_t decoder = get_decoder_from_to(in_c, UYVY);
                tmp_buffer =  malloc(2L * ((width + 1U) ^ 1U) * height);
                long in_linesize = vc_get_size(width, in_c);
                long out_linesize = vc_get_size(width, UYVY);
                for (int i = 0; i < height; ++i) {
                        decoder(tmp_buffer + i * out_linesize, in + i * in_linesize, vc_get_size(width, UYVY), DEFAULT_R_SHIFT, DEFAULT_G_SHIFT, DEFAULT_B_SHIFT);
                }
                in = tmp_buffer;
                in_c = UYVY;
        }
        if (out_c == I420) {
                toI420(out, in, width, height);
                free(tmp_buffer);
                return;
        }
        decoder_t decoder = get_decoder_from_to(in_c, out_c);
        assert(decoder != NULL);
        long out_linesize = vc_get_linesize(width, out_c);
        long in_linesize = vc_get_linesize(width, in_c);
        for (int i = 0; i < height; ++i) {
                decoder(out + i * out_linesize, in + i * in_linesize, vc_get_size(width, out_c), DEFAULT_R_SHIFT, DEFAULT_G_SHIFT, DEFAULT_B_SHIFT);
        }
        free(tmp_buffer);
}
 
static bool testcard_conv_handled_internally(codec_t c)
{
        return c == I420 || c == YUYV || c == v210;
}
 
void testcard_show_codec_help(const char *name, bool src_8b_only)
{
        bool print_i420 = !src_8b_only; // testcard2 cannot handle planar format, anyway
        printf("Supported codecs (%s):\n", name);
 
        color_printf(TERM_FG_RED "\t8 bits\n" TERM_RESET);
        for (codec_t c = VIDEO_CODEC_FIRST; c != VIDEO_CODEC_COUNT; c = (int) c + 1) {
                if (is_codec_opaque(c) || get_bits_per_component(c) != 8 || (get_decoder_from_to(RGBA, c) == VIDEO_CODEC_NONE
                                        && !testcard_conv_handled_internally(c))) {
                        continue;
                }
                if (c == I420 && !print_i420) {
                        continue;
                }
                color_printf(TERM_BOLD "\t\t%-4s" TERM_RESET " - %s\n", get_codec_name(c), get_codec_name_long(c));
        }
 
        color_printf(TERM_FG_RED "\t10+ bits\n" TERM_RESET);
        for (codec_t c = VIDEO_CODEC_FIRST; c != VIDEO_CODEC_COUNT; c = (int) c + 1) {
                if (is_codec_opaque(c) || get_bits_per_component(c) == 8) {
                        continue;
                }
                if (get_decoder_from_to(RGBA, c) == VIDEO_CODEC_NONE &&
                                ((src_8b_only && c != v210) || get_decoder_from_to(RG48, c) == VIDEO_CODEC_NONE)) {
                        continue;
                }
                color_printf(TERM_BOLD "\t\t%-4s" TERM_RESET " - %s\n", get_codec_name(c), get_codec_name_long(c));
        }
}
 
bool testcard_has_conversion(codec_t c)
{
        return get_decoder_from_to(RG48, c) != NULL ||
                get_decoder_from_to(RGBA, c) != NULL ||
                testcard_conv_handled_internally(c);
}