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