mpeg4-record.c
/** * this sample code implement main bitstream MPEG4 record function, and record for 20 seconds. * (1) for H264 record, file format please indicate xxx.h264 * for MPEG record, file format please indicate xxx.m4v * for MOTION JPEG record, file format please indicate xxx.jpg * (2) for H264 record, max_quant < 51, 1 < min_quant * for MPEG record, max_quant < 31, 1 < min_quant */ #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <sys/mman.h> #include <poll.h> #include <sys/ioctl.h> #include <sys/time.h> #include "dvr_common_api.h" #include "dvr_enc_api.h" #include "gmavi_api.h" int dvr_fd = 0; int enc_fd = 0; //test record unsigned char *bs_buf; HANDLE rec_file; int avi_str_id; int enc_buf_size; struct pollfd rec_fds; char file_name[128]; /** * @brief main function * @return 0 on success, !0 on error */ int main(int argc, char *argv[]) { int ret = 0, ch_num = 0; dvr_enc_channel_param ch_param; EncParam_Ext3 enc_param_ext = {0}; dvr_enc_control enc_ctrl; dvr_enc_queue_get data; unsigned char *buf; int buf_size; FuncTag tag; struct timeval t1,t2; char tmp_str[128]; dvr_fd = open("/dev/dvr_common", O_RDWR); //open_dvr_common enc_fd = open("/dev/dvr_enc", O_RDWR); //open_dvr_encode //set dvr encode source parameter ch_param.src.input_system = MCP_VIDEO_NTSC; ch_param.src.channel = ch_num; ch_param.src.enc_src_type = ENC_TYPE_FROM_CAPTURE; ch_param.src.dim.width = 1280; ch_param.src.dim.height = 720; ch_param.src.di_mode = LVFRAME_EVEN_ODD; ch_param.src.mode = LVFRAME_FRAME_MODE; ch_param.src.dma_order = DMAORDER_PACKET; ch_param.src.scale_indep = CAPSCALER_NOT_KEEP_RATIO; ch_param.src.input_system = MCP_VIDEO_NTSC; ch_param.src.color_mode = CAPCOLOR_YUV422; ch_param.src.vp_param.is_3DI = FALSE; ch_param.src.vp_param.is_denoise = FALSE; ch_param.src.vp_param.denoise_mode = GM3DI_FIELD; //set dvr encode main bitstream parameter ch_param.main_bs.enabled = DVR_ENC_EBST_ENABLE; ch_param.main_bs.out_bs = 0; ch_param.main_bs.enc_type = ENC_TYPE_MPEG; ch_param.main_bs.is_blocked = FALSE; ch_param.main_bs.en_snapshot = DVR_ENC_EBST_DISABLE; ch_param.main_bs.dim.width = 1280; ch_param.main_bs.dim.height = 720; //set main bitstream encode parameter ch_param.main_bs.enc.input_type = ENC_INPUT_H2642D; ch_param.main_bs.enc.frame_rate = 30; ch_param.main_bs.enc.bit_rate = 1048576; ch_param.main_bs.enc.ip_interval = 30; ch_param.main_bs.enc.init_quant = 25; ch_param.main_bs.enc.max_quant = 31; ch_param.main_bs.enc.min_quant = 1; ch_param.main_bs.enc.is_use_ROI = FALSE; ch_param.main_bs.enc.ROI_win.x = 0; ch_param.main_bs.enc.ROI_win.y = 0; ch_param.main_bs.enc.ROI_win.width = 320; ch_param.main_bs.enc.ROI_win.height = 240; //set main bitstream scalar parameter ch_param.main_bs.scl.src_fmt = SCALE_YUV422; ch_param.main_bs.scl.dst_fmt = SCALE_YUV422; ch_param.main_bs.scl.scale_mode = SCALE_LINEAR; ch_param.main_bs.scl.is_dither = FALSE; ch_param.main_bs.scl.is_correction = FALSE; ch_param.main_bs.scl.is_album = TRUE; ch_param.main_bs.scl.des_level = 0; //set main bitstream snapshot parameter ch_param.main_bs.snap.sample = JCS_yuv420; ch_param.main_bs.snap.RestartInterval = 0; ch_param.main_bs.snap.u82D = JENC_INPUT_MP42D; ch_param.main_bs.snap.quality = 70; //associate the ext. structure ch_param.main_bs.enc.ext_size = DVR_ENC_MAGIC_ADD_VAL(sizeof(enc_param_ext)); ch_param.main_bs.enc.pext_data = &enc_param_ext; enc_param_ext.feature_enable = 0; //CBR ioctl(enc_fd, DVR_ENC_SET_CHANNEL_PARAM, &ch_param); ioctl(enc_fd, DVR_ENC_QUERY_OUTPUT_BUFFER_SIZE, &enc_buf_size); bs_buf = (unsigned char*) mmap(NULL, enc_buf_size, PROT_READ|PROT_WRITE, MAP_SHARED, enc_fd, 0); ///////////////////////////////////////////////////////////////// //record start memset(&enc_ctrl, 0x0, sizeof(dvr_enc_control)); enc_ctrl.command = ENC_START; enc_ctrl.stream = 0; ret = ioctl(enc_fd, DVR_ENC_CONTROL, &enc_ctrl); // set function tag paremeter to dvr graph level FN_RESET_TAG(&tag); FN_SET_REC_CH(&tag, ch_num); ioctl(dvr_fd, DVR_COMMON_APPLY, &tag); /////////////////////////////////////////////////////////////// sprintf(file_name, "CH%d_video_%d", 0, 0); sprintf(tmp_str, "%s.m4v", file_name); rec_file = fopen ( tmp_str , "wb+" ); gettimeofday(&t1, NULL); while(1) { // prepare to select(or poll) rec_fds.fd = enc_fd; rec_fds.revents = 0; rec_fds.events = POLLIN_MAIN_BS; poll(&rec_fds, 1, 500); if (!(rec_fds.revents & POLLIN_MAIN_BS)) continue; // get dataout buffer ret = ioctl(enc_fd, DVR_ENC_QUEUE_GET, &data); if(ret < 0) continue; buf = bs_buf + data.bs.offset; buf_size = data.bs.length; ret = fwrite (buf , 1 , buf_size , rec_file); fflush(rec_file); ioctl(enc_fd, DVR_ENC_QUEUE_PUT, &data); gettimeofday(&t2, NULL); if ((t2.tv_sec - t1.tv_sec) == 20) { //<record for 20 seconds. then finish record. fclose(rec_file); break; } } //record stop memset(&enc_ctrl, 0x0, sizeof(dvr_enc_control)); enc_ctrl.stream = 0; enc_ctrl.command = ENC_STOP; ioctl(enc_fd, DVR_ENC_CONTROL, &enc_ctrl); FN_RESET_TAG(&tag); FN_SET_REC_CH(&tag, ch_num); ioctl(dvr_fd, DVR_COMMON_APPLY, &tag); munmap((void*)bs_buf, enc_buf_size); printf("----------------------------------\n"); printf(" Record finish\n"); printf("----------------------------------\n"); close(enc_fd); //close_dvr_encode close(dvr_fd); //close_dvr_common return 0; }
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