Initial revision

1 files changed, 161 insertions, 0 deletions

diff --git a/src/img_encoder.cc b/src/img_encoder.cc
new file mode 100644
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--- /dev/null
+++ b/src/img_encoder.cc
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * RTVideoRec Realtime video recoder and encoder for Linux
+ *
+ * Copyright (C) 2004  Bent Bisballe
+ * Copyright (C) 2004  B. Stultiens
+ * Copyright (C) 2004  Koen Otter and Glenn van der Meyden
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "img_encoder.h"
+#include <stdio.h>
+//#include <setjmp.h>
+
+//av_alloc_format_context
+//av_destruct_packet_nofree
+
+ImgEncoder::ImgEncoder()
+{
+  //////////////////// GLOBAL INIT
+	av_register_all();
+
+  //////////////////// DECODE INIT
+  AVCodec *deccodec;
+  
+  // find the dvvideo decoder
+  deccodec = avcodec_find_decoder(CODEC_ID_DVVIDEO);
+  if (!deccodec) {
+    fprintf(stderr, "codec not found\n");
+    exit(1);
+  }
+  
+  dcc= avcodec_alloc_context();
+  
+  // open it
+  if (avcodec_open(dcc, deccodec) < 0) {
+    fprintf(stderr, "could not open codec\n");
+    exit(1);
+  }
+}
+
+ImgEncoder::~ImgEncoder()
+{
+  // FIXME: free: deccodec and dcc
+}
+
+void ImgEncoder::encode(DVFrame *dvframe, 
+                        char *filename, 
+                        int quality)
+{ 
+  int ret;
+  AVFrame *rawframe = avcodec_alloc_frame();
+
+  ///////////////////////// DECODE
+  uint8_t *ptr;
+  int got_picture = 1;
+  int len;
+
+  ptr = (uint8_t *)dvframe->frame;
+  len = sizeof(dvframe->frame);
+
+  ret = avcodec_decode_video(dcc, rawframe, &got_picture, ptr, len);
+
+  if(!ret) {
+    printf("Decoder fuckup!\n");
+    return;
+  }
+  
+  // TODO: Do image convertion here!
+  AVPicture pict;
+  avpicture_alloc(&pict,PIX_FMT_RGB24, 720, 576);
+
+  img_convert(&pict, PIX_FMT_RGB24, (AVPicture *)rawframe, 
+              PIX_FMT_YUV420P, 720, 576);
+  printf("converted\n");
+  writeJPEGFile(filename, quality, (JSAMPLE*)(pict.data[0]), 720, 576);
+  printf("written\n");
+
+  avpicture_free(&pict);
+  av_free(rawframe);
+}
+///////////////////////////////////////////////////////////////////////////////////////////
+
+void ImgEncoder::writeJPEGFile(char *filename, 
+                               int quality,
+                               JSAMPLE * image_buffer, // Points to large array of R,G,B-order data 
+                               int image_width,        // Number of columns in image 
+                               int image_height        // Number of rows in image 
+)
+{
+  /*
+  struct jpeg_compress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+
+  FILE * outfile;               // target file
+  JSAMPROW row_pointer[1];      // pointer to JSAMPLE row[s] 
+  int row_stride;               // physical row width in image buffer 
+
+  // Step 1: allocate and initialize JPEG compression object 
+  cinfo.err = jpeg_std_error(&jerr);
+  jpeg_create_compress(&cinfo);
+
+  // Step 2: specify data destination (eg, a file) 
+  if ((outfile = fopen(filename, "wb")) == NULL) {
+    fprintf(stderr, "can't open %s\n", filename);
+    exit(1);
+  }
+  jpeg_stdio_dest(&cinfo, outfile);
+
+  // Step 3: set parameters for compression 
+  cinfo.image_width = image_width;      // image width and height, in pixels 
+  cinfo.image_height = image_height;
+  cinfo.input_components = 3;           // # of color components per pixel 
+/*
+typedef enum {
+        JCS_UNKNOWN,            // error/unspecified
+        JCS_GRAYSCALE,          // monochrome
+        JCS_RGB,                // red/green/blue
+        JCS_YCbCr,              // Y/Cb/Cr (also known as YUV)
+        JCS_CMYK,               // C/M/Y/K
+        JCS_YCCK                // Y/Cb/Cr/K
+} J_COLOR_SPACE;
+* /
+  cinfo.in_color_space = JCS_RGB;       // colorspace of input image 
+
+  jpeg_set_defaults(&cinfo);
+
+  jpeg_set_quality(&cinfo, quality, TRUE); // limit to baseline-JPEG values
+
+  // Step 4: Start compressor 
+  jpeg_start_compress(&cinfo, TRUE);
+
+  // Step 5: while (scan lines remain to be written) 
+  row_stride = image_width * 3; // JSAMPLEs per row in image_buffer 
+
+  while (cinfo.next_scanline < cinfo.image_height) {
+    row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
+    (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
+  }
+
+  // Step 6: Finish compression 
+  jpeg_finish_compress(&cinfo);
+  fclose(outfile);
+
+  // Step 7: release JPEG compression object 
+  jpeg_destroy_compress(&cinfo);
+  */
+}