初版

2025-12-03 11:12:34 +08:00
parent c23ae4f24c
commit bc195654bf
8163 changed files with 3799544 additions and 92 deletions
@@ -0,0 +1,65 @@
+#include "avilib.h"
+
+//读取AVI文件视频帧和音频帧行写卡在PC上验证
+int video_dec_demo(void)
+{
+    char *filename = "storage/sd0/C/VID_0001.AVI";
+    avi_t *in_fd = AVI_open_input_file(filename, 1);
+    if (in_fd == NULL) {
+        printf("AVI_open_input_file err \n");
+        return -1;
+    }
+
+    u8 *file_buf = malloc(20 * 1024);
+    if (!file_buf) {
+        printf("file_buf malloc err\n");
+        return -1;
+    }
+
+    int total_frame = AVI_video_frames(in_fd);
+    printf("AVI total video frame:%d \n", total_frame);
+    int audio_chunks =  AVI_audio_chunks(in_fd);
+    printf("AVI total audio frame:%d \n", audio_chunks);
+
+    char save_file_name[64];
+    int i = 0;
+    for (i = 0; i < total_frame; i++) {
+        AVI_set_video_position(in_fd, i);
+
+        int keyframe;
+        int file_len = AVI_read_frame(in_fd, (char *)file_buf, &keyframe);
+        if (file_len > 0) {
+            printf("write video frame:%d \n", i);
+            snprintf(save_file_name, sizeof(save_file_name), "storage/sd0/C/avi_test/jpg_%d.jpg", i);
+            FILE *fd = fopen(save_file_name, "w+");
+            fwrite(file_buf, 1, file_len, fd);
+            fclose(fd);
+        }
+    }
+
+    snprintf(save_file_name, sizeof(save_file_name), "storage/sd0/C/avi_test/test.pcm");
+    FILE *fd = fopen(save_file_name, "w+");
+
+    u32 offset = 0;
+    for (i = 0; i < audio_chunks; i++) {
+        int audio_chunk_size =  AVI_audio_size(in_fd, i);
+        AVI_set_audio_position(in_fd, offset);
+
+
+        int file_len = AVI_read_audio_chunk(in_fd, (char *)file_buf);
+        if (file_len > 0) {
+            printf("write audio frame:%d  size:%d chunk_size:%d \n", i, file_len, audio_chunk_size);
+            fwrite(file_buf, 1, file_len, fd);
+        }
+
+        offset += audio_chunk_size;
+    }
+    fclose(fd);
+
+
+    AVI_close(in_fd);
+    free(file_buf);
+
+    /* os_time_dly(-1); */
+    return 0;
+}