Zeta--S3 Linux抓取一帧YUV图像后使用硬件编码器编码成H.264 

  1 #include <stdio.h>
  2 #include <stdlib.h>
  3 #include <string.h>
  4 #include <getopt.h>
  5 #include <fcntl.h>
  6 #include <unistd.h>
  7 #include <errno.h>
  8 #include <malloc.h>
  9 #include <sys/stat.h>
 10 #include <sys/types.h>
 11 #include <sys/time.h>
 12 #include <sys/mman.h>
 13 #include <sys/ioctl.h>
 14 #include <asm/types.h>
 15 #include <linux/videodev2.h>
 16 #include <pthread.h>
 17 #include <memoryAdapter.h>
 18 #include <vencoder.h>
 19 
 20 static VideoEncoder *gVideoEnc;
 21 static VencBaseConfig baseConfig;
 22 static int gWidth = 1920;
 23 static int gHeight = 1080;
 24 
 25 
 26 #define ALIGN_4K(x) (((x) + (4095)) & ~(4095))
 27 #define ALIGN_1K(x) (((x) + (1023)) & ~(1023))
 28 #define ALIGN_32B(x) (((x) + (31)) & ~(31))
 29 #define ALIGN_16B(x) (((x) + (15)) & ~(15))
 30 #define ALIGN_8B(x) (((x) + (7)) & ~(7))
 31 
 32 #define REQ_COUNT 10
 33 
 34 struct buffer
 35 {
 36     void *start;
 37     size_t length;
 38     char *addrVirY;
 39     char *addrVirC;
 40 };
 41 
 42 static int fd = -1;
 43 struct buffer *buffers = NULL;
 44 
 45 struct v4l2_capability cap;
 46 struct v4l2_format fmt;
 47 struct v4l2_buffer buf[REQ_COUNT];
 48 struct v4l2_requestbuffers req;
 49 struct v4l2_buffer tmp_buf;
 50 enum v4l2_buf_type type;
 51 
 52 int H264EncodeOneFrame(unsigned char *AddrVirY, unsigned char *AddrVirC, FILE *fpH264)
 53 {
 54     int result = 0;
 55     VencInputBuffer inputBuffer;
 56     VencOutputBuffer outputBuffer;
 57     int value;
 58     unsigned int head_num = 0;
 59     VencHeaderData sps_pps_data;
 60 
 61     VencH264Param h264Param;
 62     //* h264 param
 63     h264Param.bEntropyCodingCABAC = 1;
 64     h264Param.nBitrate = 6 * 1024 * 1024;
 65     h264Param.nFramerate = 30;
 66     h264Param.nCodingMode = VENC_FRAME_CODING;
 67     //h264Param.nCodingMode = VENC_FIELD_CODING;
 68     h264Param.nMaxKeyInterval = 30;
 69     h264Param.sProfileLevel.nProfile = VENC_H264ProfileMain;
 70     h264Param.sProfileLevel.nLevel = VENC_H264Level31;
 71     h264Param.sQPRange.nMinqp = 10;
 72     h264Param.sQPRange.nMaxqp = 40;
 73     memset(&baseConfig, 0, sizeof(VencBaseConfig));
 74 
 75     if (baseConfig.memops == NULL)
 76     {
 77         baseConfig.memops = MemAdapterGetOpsS();
 78         if (baseConfig.memops == NULL)
 79         {
 80             printf("MemAdapterGetOpsS failed\n");
 81 
 82             return -1;
 83         }
 84         CdcMemOpen(baseConfig.memops);
 85     }
 86 
 87     baseConfig.nInputWidth = gWidth;
 88     baseConfig.nInputHeight = gHeight;
 89     baseConfig.nStride = gWidth;
 90     baseConfig.nDstWidth = gWidth;
 91     baseConfig.nDstHeight = gHeight;
 92     baseConfig.eInputFormat = VENC_PIXEL_YVU420SP;
 93 
 94     if (gVideoEnc == NULL)
 95     {
 96         printf("get SPS PPS\n");
 97         gVideoEnc = VideoEncCreate((VENC_CODEC_TYPE)VENC_CODEC_H264);
 98         VideoEncSetParameter(gVideoEnc, VENC_IndexParamH264Param, &h264Param);
 99         value = 0;
100         VideoEncSetParameter(gVideoEnc, VENC_IndexParamIfilter, &value);
101         value = 0; //degree
102         VideoEncSetParameter(gVideoEnc, VENC_IndexParamRotation, &value);
103         value = 0;
104         VideoEncSetParameter(gVideoEnc, VENC_IndexParamSetPSkip, &value);
105         VideoEncInit(gVideoEnc, &baseConfig);
106     }
107     VideoEncGetParameter(gVideoEnc, VENC_IndexParamH264SPSPPS, &sps_pps_data);
108 
109     fwrite(sps_pps_data.pBuffer, 1, sps_pps_data.nLength, fpH264);
110 
111     VencAllocateBufferParam bufferParam;
112     memset(&bufferParam, 0, sizeof(VencAllocateBufferParam));
113     memset(&inputBuffer, 0, sizeof(VencInputBuffer));
114 
115     bufferParam.nSizeY = baseConfig.nInputWidth * baseConfig.nInputHeight;
116     bufferParam.nSizeC = baseConfig.nInputWidth * baseConfig.nInputHeight / 2;
117     bufferParam.nBufferNum = 1;
118     AllocInputBuffer(gVideoEnc, &bufferParam);
119 
120     GetOneAllocInputBuffer(gVideoEnc, &inputBuffer);
121 
122     memcpy(inputBuffer.pAddrVirY, AddrVirY, baseConfig.nInputWidth * baseConfig.nInputHeight);
123     memcpy(inputBuffer.pAddrVirC, AddrVirC, baseConfig.nInputWidth * baseConfig.nInputHeight / 2);
124     inputBuffer.bEnableCorp = 0;
125     inputBuffer.sCropInfo.nLeft = 240;
126     inputBuffer.sCropInfo.nTop = 240;
127     inputBuffer.sCropInfo.nWidth = 240;
128     inputBuffer.sCropInfo.nHeight = 240;
129     FlushCacheAllocInputBuffer(gVideoEnc, &inputBuffer);
130     AddOneInputBuffer(gVideoEnc, &inputBuffer);
131     if (VENC_RESULT_OK != VideoEncodeOneFrame(gVideoEnc))
132     {
133         printf("VideoEncodeOneFrame failed.\n");
134         return -1;
135     }
136     AlreadyUsedInputBuffer(gVideoEnc, &inputBuffer);
137     ReturnOneAllocInputBuffer(gVideoEnc, &inputBuffer);
138 
139     GetOneBitstreamFrame(gVideoEnc, &outputBuffer);
140     if (outputBuffer.nSize0 > 0)
141     {
142         printf("write pData0\n");
143         fwrite(outputBuffer.pData0, 1, outputBuffer.nSize0, fpH264);
144     }
145     if (outputBuffer.nSize1 > 0)
146     {
147         printf("write pData1\n");
148         fwrite(outputBuffer.pData1, 1, outputBuffer.nSize1, fpH264);
149     }
150     //    outputBuffer.pData0;
151     //    outputBuffer.nSize0;
152     //    outputBuffer.pData1;
153     //    outputBuffer.nSize1;
154 
155     FreeOneBitStreamFrame(gVideoEnc, &outputBuffer);
156 
157     if (baseConfig.memops != NULL)
158     {
159         CdcMemClose(baseConfig.memops);
160         baseConfig.memops = NULL;
161     }
162     VideoEncDestroy(gVideoEnc);
163     gVideoEnc = NULL;
164 
165     return 0;
166 }
167 
168 
169 int main(int argc, char **argv)
170 {
171     int iCounterCamera = 0;
172     int iCounter100frame = 0;
173     struct v4l2_fmtdesc fmtd;
174     int ret = 0;
175     int index = 0;
176     struct v4l2_format fmt2;
177 
178     if ((fd = open("/dev/video0", O_RDWR | O_NONBLOCK, 0)) < 0)
179     {
180         printf("open video0 failed.\n");
181         return -1;
182     }
183 
184     memset(&fmtd, 0, sizeof(fmtd));
185     fmtd.index = 0;
186     fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
187 
188     while ((ret = ioctl(fd, VIDIOC_ENUM_FMT, &fmtd)) == 0)
189     {
190         fmtd.index++;
191     }
192     if (ioctl(fd, VIDIOC_QUERYCAP, &cap) < 0)
193     {
194         printf("Error:VIDIOC_QUERYCAP\n");
195         return -1;
196     }
197 
198     if (ioctl(fd, VIDIOC_S_INPUT, &index) < 0)
199     {
200         printf("Error:VIDIOC_S_INPUT\n");
201         return -1;
202     }
203 
204     fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
205     ret = ioctl(fd, VIDIOC_G_FMT, &fmt2);
206     printf("VIDIOC_G_FMT ret=%d \n", ret);
207 
208     fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
209     fmt.fmt.pix.width = gWidth;
210     fmt.fmt.pix.height = gHeight;
211 
212     fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV21;
213     if (ioctl(fd, VIDIOC_S_FMT, &fmt) < 0)
214     {
215         printf("Error:VIDIOC_S_FMT\n");
216         return -1;
217     }
218 
219     req.count = REQ_COUNT;
220     req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
221     req.memory = V4L2_MEMORY_MMAP;
222     if (ioctl(fd, VIDIOC_REQBUFS, &req) < 0)
223     {
224         printf("Error:VIDIOC_REQBUFS\n");
225         return -1;
226     }
227 
228     buffers = calloc(req.count, sizeof(*buffers));
229 
230     for (int i = 0; i < req.count; i++)
231     {
232         buf[i].type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
233         buf[i].memory = V4L2_MEMORY_MMAP;
234         buf[i].index = i;
235         if (ioctl(fd, VIDIOC_QUERYBUF, buf + i) < 0)
236         {
237             printf("Error:VIDIOC_QUERYBUF\n");
238             return -1;
239         }
240 
241         buffers[i].length = buf[i].length;
242         buffers[i].start = mmap(NULL, buf[i].length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, buf[i].m.offset);
243 
244         buf[i].type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
245         buf[i].memory = V4L2_MEMORY_MMAP;
246         buf[i].index = i;
247 
248         if (ioctl(fd, VIDIOC_QBUF, buf + i) < 0)
249         {
250             printf("Error: VIDIOC_QBUF\n");
251             return -1;
252         }
253 
254         buffers[i].addrVirY = buffers[i].start;
255         buffers[i].addrVirC = buffers[i].addrVirY + ALIGN_16B(gWidth) * ALIGN_16B(gHeight);
256     }
257 
258     type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
259     if (ioctl(fd, VIDIOC_STREAMON, &type) < 0)
260     {
261         printf("Error: VIDIOC_STREAMON\n");
262         return -1;
263     }
264 
265     FILE *fpYUV = NULL;
266     FILE *fpH264 = NULL;
267     char yuv_path[128];
268     char h264_path[128];
269     for (int i = 0; i < req.count; i++)
270     {
271         struct v4l2_buffer buf;
272 
273         /*帧出列*/
274         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
275         buf.memory = V4L2_MEMORY_MMAP;
276         buf.index = i;
277         ioctl(fd, VIDIOC_DQBUF, &buf);
278 
279         memset(yuv_path, 0, 128);
280         memset(h264_path, 0, 128);
281         sprintf(yuv_path, "/mnt/extsd/src%04d.yuv", buf.index);
282         sprintf(h264_path, "/mnt/extsd/dst%04d.h264", buf.index);
283         fpYUV = fopen(yuv_path, "w");
284         fwrite(buffers[buf.index].addrVirY, 1, gWidth * gHeight, fpYUV);
285         fwrite(buffers[buf.index].addrVirC, 1, gWidth * gHeight / 2, fpYUV);
286         fpH264 = fopen(h264_path, "w");
287         H264EncodeOneFrame(buffers[buf.index].addrVirY, buffers[buf.index].addrVirC, fpH264);
288         fclose(fpYUV);
289         fpYUV = NULL;
290         fclose(fpH264);
291         fpH264 = NULL;
292 
293         /*buf入列*/
294         ioctl(fd, VIDIOC_QBUF, &buf);
295     }
296 
297     if (ioctl(fd, VIDIOC_STREAMOFF, &type) < 0)
298     {
299         printf("Error:VIDIOC_STREAMOFF\n");
300 
301         // return 0;
302         return;
303     }
304 
305     for (int i = 0; i < req.count; i++)
306     {
307         munmap(buffers[i].start, buf[i].length);
308     }
309 
310     close(fd);
311 
312     return 0;
313 }

 

posted @ 2018-06-13 21:06  ka布  阅读(1133)  评论(0)  编辑  收藏  举报