颜色空间转换CSConvert：NV12、NV21、YV12和I420的相互转换

技术 > 视频处理 Video CSConvert
发布时间 :
字数:1.7k 阅读 : 评论:
  1. 1、NV12转I420
  2. 2、I420转NV21
  3. 3、NV12转YV12
  4. 4、NV12转YV12
  5. 5、I420转NV12
  6. 6、I420转YV12
  7. THE END!

本文目录

  1. 1、NV12转I420
  2. 2、I420转NV21
  3. 3、NV12转YV12
  4. 4、NV12转YV12
  5. 5、I420转NV12
  6. 6、I420转YV12
  7. THE END!

1、NV12转I420

NV12toI420.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *uv, *u, *v;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage: NV12toI420.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }
    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;//++YUV420
    y = (char *)malloc(frame_size);
    if (y == NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    u = y + width*height;
    v = u + width*height / 4;

    uv = (char *)malloc(width*height >> 1);
    if (uv == NULL)
    {
        printf("malloc uv fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf_s(outname, "%s_I420.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(uv, 1, width*height >> 1, fin);
        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2; i++)
        {
            u[i] = uv[2 * i + 0];
            v[i] = uv[2 * i + 1];
        }
        fwrite(y, 1, frame_size, fou);
        printf("%dth frame ok!!\n", frame_num);
        frame_num++;
    }
    printf("NV12 to I420 successfully!!,total frames: %d\n", frame_num);

    free(y);
    y = NULL;
    free(uv);
    uv = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

2、I420转NV21

I420toNV21.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *uv, *u, *v;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage:I420toNV21.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }

    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;//++YUV420
    y = (char *)malloc(frame_size);
    if (y == NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    uv = y + width*height;

    u = (char *)malloc(width*height >> 2);
    v = (char *)malloc(width*height >> 2);

    if (u == NULL || v == NULL)
    {
        printf("malloc u or v fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf(outname, "%s_NV21.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(u, 1, width*height >> 2, fin);
        n += fread(v, 1, width*height >> 2, fin);

        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2; i++)
        {
            uv[2 * i + 0] = v[i]; // v
            uv[2 * i + 1] = u[i]; // u
        }
        fwrite(y, 1, height*width, fou);
        fwrite(uv, 1, height*width >> 1, fou);

        printf("%dth frame ok!!\n", frame_num);

        frame_num++;
    }
    printf("I420 to NV21 successfully!!, total frames: %d\n", frame_num);

    free(y);
    y = NULL;
    free(u);
    u = NULL;
    free(v);
    v = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

3、NV12转YV12

NV21toYV12.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *uv, *u, *v;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage: NV21toYV12.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }
    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;//++YUV420
    y = (char *)malloc(frame_size);
    if (y == NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    v = y + width*height;
    u = v + width*height / 4;

    uv = (char *)malloc(width*height >> 1);
    if (uv == NULL)
    {
        printf("malloc uv fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf_s(outname, "%s_YV12.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(uv, 1, width*height >> 1, fin);
        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2; i++)
        {
            v[i] = uv[2 * i + 0];// v
            u[i] = uv[2 * i + 1];// u
        }
        fwrite(y, 1, frame_size, fou);
        printf("%dth frame ok!!\n", frame_num);
        frame_num++;
    }
    printf("NV21 to YV12 successfully!!,total frames: %d\n", frame_num);

    free(y);
    y = NULL;
    free(uv);
    uv = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

4、NV12转YV12

NV12toYV12.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *uv, *u, *v;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage:NV12toYV12.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }
    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;//++YUV420
    y = (char *)malloc(frame_size);
    if (y ==NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    v = y + width*height;
    u = v + width*height / 4;

    uv = (char *)malloc(width*height >> 1);
    if (uv == NULL)
    {
        printf("malloc uv fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf_s(outname, "%s_YV12.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(uv, 1, width*height >> 1, fin);
        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2;i++)
        {
            u[i] = uv[2 * i + 0];
            v[i] = uv[2 * i + 1];
        }
        fwrite(y, 1, frame_size, fou);
        printf("%dth frame ok!!\n", frame_num);
        frame_num++;
    }
    printf("NV12 to YV12 successfully!!,total frames: %d\n", frame_num);

    free(y);
    y = NULL;
    free(uv);
    uv = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

5、I420转NV12

I420toNV12.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *uv, *u, *v;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage:I420toNV12.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }

    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;//++YUV420
    y = (char *)malloc(frame_size);
    if (y == NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    uv = y + width*height;

    u = (char *)malloc(width*height >> 2);
    v = (char *)malloc(width*height >> 2);

    if (u == NULL || v == NULL)
    {
        printf("malloc u or v fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf_s(outname, "%s_NV12.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(u, 1, width*height >> 2, fin);
        n += fread(v, 1, width*height >> 2, fin);

        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2; i++)
        {
             uv[2 * i + 0] = u[i];
             uv[2 * i + 1] = v[i];
        }
        fwrite(y, 1, height*width, fou);
        fwrite(uv, 1, height*width >> 1, fou);

        printf("%dth frame ok!!\n", frame_num);

        frame_num++;
    }
    printf("I420 to NV12 successfully!!, total frames: %d\n",frame_num);

    free(y);
    y = NULL;
    free(u);
    u = NULL;
    free(v);
    v = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

6、I420转YV12

I420toYV12.c


#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
    int width, height;
    int frame_size;
    FILE *fin, *fou;
    char *y, *u, *v,*u1,*v1;
    int i, frame_num = 0;
    char outname[512] = { 0, };
    printf("\nUsage:I420toYV12.exe input.yuv width height\n\n");
    if (argc != 4)
    {
        return -1;
    }
    fin = fopen(argv[1], "rb");
    if (fin == NULL)
    {
        printf("error:open %s fail\n", argv[1]);
        return -1;
    }
    width = atoi(argv[2]);
    height = atoi(argv[3]);
    frame_size = width*height * 3 / 2;
    y = (char *)malloc(frame_size);
    if (y == NULL)
    {
        printf("malloc y fail\n");
        return -1;
    }
    v = y + width*height;
    u = v + width*height/4;

    u1 = (char *)malloc(width*height >> 2);
    v1 = (char *)malloc(width*height >> 2);

    if (u1 == NULL || v1== NULL)
    {
        printf("malloc u1 or v1 fail\n");
        return -1;
    }
    memset(outname, 0, sizeof(outname));
    sprintf_s(outname, "%s_YV12.yuv", argv[1]);
    fou = fopen(outname, "wb");
    if (fou == NULL)
    {
        printf("error: open %s fail\n", outname);
        return -1;
    }

    while (!feof(fin))
    {
        int n = 0;
        n = fread(y, 1, width*height, fin);
        n += fread(u1, 1, width*height >> 2, fin);
        n += fread(v1, 1, width*height >> 2, fin);

        if (n != frame_size)
        {
            break;
        }
        for (i = 0; i < height*width >> 2; i++)
        {
            v[i] = v1[i];
            u[i] = u1[i];
        }
        fwrite(y, 1, frame_size, fou);

        printf("%dth frame ok!!\n", frame_num);
        frame_num++;
    }
    printf("I420 to YV12 successfully!!,total frames: %d\n",frame_num);

    free(y);
    y = NULL;
    free(u1);
    u1 = NULL;
    free(v1);
    v1 = NULL;
    fclose(fin);
    fclose(fou);

    return 0;
}

THE END!

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文章标题:颜色空间转换CSConvert：NV12、NV21、YV12和I420的相互转换

字数:1.7k

本文作者:Soaring Lee

发布时间:2019-07-13, 21:34:47

最后更新:2021-06-14, 12:13:44

原始链接:https://soaringleefighting.github.io/2019/07/13/【Codecs系列】颜色空间转换CSConvert：NV12、NV21、YV12和I420的相互转换/

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