初版
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huxi
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#include "system/includes.h"
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#include "app_config.h"
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// 如果定义了 USE_PSRAM，就把 malloc/free 映射到 malloc_psram/free_psram
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#if TCFG_PSRAM_DEV_ENABLE
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#define malloc(size) malloc_psram(size)
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#define free(ptr) free_psram(ptr)
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#else
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#define malloc(size) malloc(size)
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#define free(ptr) free(ptr)
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#endif
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extern int jpgenc_get_heapsize(int width, int height);
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extern void *jpgenc_init(unsigned char *heap, int width, int height, int stride, int quality);
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extern void jpgenc_free(void *ctxt);
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extern void jpgenc_set_quality(void *ctxt, int quality);
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extern void jpgenc_get_header(void *ctxt, unsigned char **output, int *out_size);
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extern void jpgenc_encode_yuyv(void *ctxt, unsigned char *data, unsigned char *output, int *out_size, int vlen, int voff);
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struct software_jpegenc_hdl {
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void *jfif;
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u8 *heap;
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u8 *jpeg_header;
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int jpeg_header_size;
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};
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_init jpeg软件分行编码初始化
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*
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* @param img_width 图像宽
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* @param img_height 图像高
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* @param img_stride
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* @param q_val 编码Q值，范围(1-100)
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* @return enc_hdl_ptr:成功 NULL:失败
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*/
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/* ------------------------------------------------------------------------------------*/
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void *software_jpegenc_init(int img_width, int img_height, int img_stride, int q_val)
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{
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struct software_jpegenc_hdl *hdl = malloc(sizeof(struct software_jpegenc_hdl));
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if (!hdl) {
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printf("jpgenc hdl malloc fail \n");
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return NULL;
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}
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memset(hdl, 0x00, sizeof(struct software_jpegenc_hdl));
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//获取jpg头信息大小
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int heapsize = jpgenc_get_heapsize(img_width, img_height);
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/* printf("jpgenc heapsize:%d \n",heapsize); */
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// 申请jpg头部控件
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u8 *heap = malloc(heapsize);
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if (!heap) {
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printf("jpgenc heap malloc fail \n");
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free(hdl);
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return NULL;
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}
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//JPG图像编码初始化
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u8 *header;
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int header_size;
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void *jfif = jpgenc_init(heap, img_width, img_height, img_stride, q_val);
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jpgenc_get_header(jfif, &header, &header_size);
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/* printf("jpgenc header_size:%d \n",header_size); */
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hdl->jfif = jfif;
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hdl->heap = heap;
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hdl->jpeg_header = header;
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hdl->jpeg_header_size = header_size;
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return (void *)hdl;
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}
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_line jpeg软件分行编码
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*
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* @param jpgenc_hdl 编码句柄,software_jpegenc_init获取
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* @param out_buf 编码位流保存buf
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* @param out_buf_size 编码位流保存buf大小
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* @param in_data 待编码的YUYV数据buf
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* @param vlen 编码行数
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* @param voff 编码行数偏移
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* @param jpgenc_out_size 此次编码输出位流的大小
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*
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* @return 0:成功 -1:失败
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*/
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/* ------------------------------------------------------------------------------------*/
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int software_jpegenc_line(void *jpgenc_hdl, u8 *out_buf, int out_buf_size, u8 *in_data, int vlen, int voff, int *jpgenc_out_size)
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{
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if (!jpgenc_hdl || !out_buf || !in_data) {
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printf("jpgenc ptr err \n");
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return -1;
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}
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struct software_jpegenc_hdl *hdl = (struct software_jpegenc_hdl *)jpgenc_hdl;
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int total_size = 0;
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u8 *buf_ptr = out_buf;
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int buf_size = out_buf_size;
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if (voff == 0) {
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if (buf_size < hdl->jpeg_header_size) {
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printf("jpgenc header buf_size err buf_size:%d need size:%d \n",
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buf_size, hdl->jpeg_header_size);
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return -1;
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}
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memcpy(out_buf, hdl->jpeg_header, hdl->jpeg_header_size);
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buf_ptr += hdl->jpeg_header_size;
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buf_size -= hdl->jpeg_header_size;
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total_size += hdl->jpeg_header_size;
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}
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int out_size = buf_size;
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jpgenc_encode_yuyv(hdl->jfif, in_data, buf_ptr, &out_size, vlen, voff);
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if (out_size == buf_size) {
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printf("jpgenc encode buf_size err \n");
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return -1;
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}
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total_size += out_size;
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*jpgenc_out_size = total_size;
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return 0;
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}
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_exit jpeg软件编码退出流程，释放内存
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*
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* @param jpgenc_hdl init时申请的句柄
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*
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*/
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/* ------------------------------------------------------------------------------------*/
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void software_jpegenc_exit(void *jpgenc_hdl)
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{
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if (!jpgenc_hdl) {
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return;
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}
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struct software_jpegenc_hdl *hdl = (struct software_jpegenc_hdl *)jpgenc_hdl;
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if (hdl->heap) {
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free(hdl->heap);
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}
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if (hdl->jfif) {
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jpgenc_free(hdl->jfif);
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}
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free(hdl);
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}
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//测试代码
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//os_task_create(software_jpegenc_demo_task,NULL,10,2048,1024,"jpegenc_demo_task");
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void software_jpegenc_demo_task(void *priv)
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{
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mem_stats();
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//1.128x128 YUYV
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int img_width = 240; //图片宽
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int img_height = 320; //图片高
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int vlen = 32; //每次编码的行数
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void *fp = NULL, *w_fp = NULL;
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int jpeg_buf_size, yuv_buf_size, cur_enc_line, out_buf_size, jpgenc_out_total_size;
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u8 *jpeg_buf = NULL, *yuv_buf = NULL, *out_buf = NULL;
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void *enc_hdl = NULL;
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uint32_t enc_time;
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fp = (void *)fopen("storage/sd0/C/output1.yuy", "r");
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if (!fp) {
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printf("fopen err \n");
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goto exit;
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}
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printf("yuv file len:%d \n", flen(fp));
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//确保内存足够装下, 测试图片240*320 Q值50,编码出来8K内存
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jpeg_buf_size = 20 * 1024;
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jpeg_buf = malloc(jpeg_buf_size);
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if (!jpeg_buf) {
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printf("malloc jpg buf err \n");
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mem_stats();
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goto exit;
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}
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yuv_buf_size = img_width * vlen * 2;
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yuv_buf = malloc(yuv_buf_size);
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if (!yuv_buf) {
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printf("malloc yuv buf err \n");
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mem_stats();
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goto exit;
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}
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enc_hdl = software_jpegenc_init(img_width, img_height, img_width, 50);
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if (!enc_hdl) {
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printf("software jpegenc init err \n");
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goto exit;
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}
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cur_enc_line = 0;
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out_buf = jpeg_buf;
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out_buf_size = jpeg_buf_size;
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jpgenc_out_total_size = 0;
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enc_time = 0;
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while (cur_enc_line < img_height) {
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int jpgenc_out_size = 0;
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if (fread(yuv_buf, 1, yuv_buf_size, fp) != yuv_buf_size) {
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printf("yuv fread err \n");
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goto exit;
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}
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uint32_t timer_get_ms(void);
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uint32_t enc_start_time = timer_get_ms();
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if (software_jpegenc_line(enc_hdl, out_buf, out_buf_size, yuv_buf, vlen, cur_enc_line, &jpgenc_out_size)) {
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printf("software jpgenc line err \n");
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goto exit;
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}
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enc_time += timer_get_ms() - enc_start_time;
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out_buf += jpgenc_out_size;
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out_buf_size -= jpgenc_out_size;
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jpgenc_out_total_size += jpgenc_out_size;
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cur_enc_line += vlen;
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}
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printf("jpgenc finish use time: %dms jpg size:%d \n", enc_time, jpgenc_out_total_size);
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w_fp = fopen("storage/sd0/C/output1.jpg", "w+");
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if (!w_fp) {
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printf("jpeg fopen err \n");
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goto exit;
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}
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if (fwrite(jpeg_buf, 1, jpgenc_out_total_size, w_fp) != jpgenc_out_total_size) {
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printf("jpeg fwrite err \n");
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goto exit;
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}
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exit:
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printf("software_jpegenc_demo_task exit \n");
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if (w_fp) {
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fclose(w_fp);
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w_fp = NULL;
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}
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if (fp) {
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fclose(fp);
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fp = NULL;
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}
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if (enc_hdl) {
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software_jpegenc_exit(enc_hdl);
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enc_hdl = NULL;
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}
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if (yuv_buf) {
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free(yuv_buf);
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yuv_buf = NULL;
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}
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if (jpeg_buf) {
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free(jpeg_buf);
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jpeg_buf = NULL;
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}
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mem_stats();
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os_time_dly(-1);
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}
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@@ -0,0 +1,46 @@
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#ifndef SOFTWARE_JPEGENC_H
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#define SOFTWARE_JPEGENC_H
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_init jpeg软件分行编码初始化
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*
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* @param img_width 图像宽
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* @param img_height 图像高
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* @param img_stride
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* @param q_val 编码Q值，范围(1-100)
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* @return enc_hdl_ptr:成功 NULL:失败
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*/
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/* ------------------------------------------------------------------------------------*/
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void *software_jpegenc_init(int img_width, int img_height, int img_stride, int q_val);
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_line jpeg软件分行编码
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*
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* @param jpgenc_hdl 编码句柄,software_jpegenc_init获取
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* @param out_buf 编码位流保存buf
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* @param out_buf_size 编码位流保存buf大小
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* @param in_data 待编码的YUYV数据buf
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* @param vlen 编码行数
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* @param voff 编码行数偏移
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* @param jpgenc_out_size 此次编码输出位流的大小
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*
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* @return 0:成功 -1:失败
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*/
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/* ------------------------------------------------------------------------------------*/
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int software_jpegenc_line(void *jpgenc_hdl, u8 *out_buf, int out_buf_size, u8 *in_data, int vlen, int voff, int *jpgenc_out_size);
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/* ------------------------------------------------------------------------------------*/
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/**
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* @brief software_jpegenc_exit jpeg软件编码退出流程，释放内存
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*
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* @param jpgenc_hdl init时申请的句柄
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*
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*/
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/* ------------------------------------------------------------------------------------*/
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void software_jpegenc_exit(void *jpgenc_hdl);
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#endif /* SOFTWARE_JPEGENC_H */
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