155 static int build_default_huffman_tables(struct jdec_private *priv)  in build_default_huffman_tables()  argument
158 	if (priv->default_huffman_table_initialized)  in build_default_huffman_tables()
162         priv->HTDC_valid[i] = 1;  in build_default_huffman_tables()
163         memcpy(priv->HTDC[i].bits, default_huffman_table_param.huffman_table[i].num_dc_codes, 16);  in build_default_huffman_tables()
164         memcpy(priv->HTDC[i].values, default_huffman_table_param.huffman_table[i].dc_values, 16);  in build_default_huffman_tables()
165         priv->HTAC_valid[i] = 1;  in build_default_huffman_tables()
166         memcpy(priv->HTAC[i].bits, default_huffman_table_param.huffman_table[i].num_ac_codes, 16);  in build_default_huffman_tables()
167         memcpy(priv->HTAC[i].values, default_huffman_table_param.huffman_table[i].ac_values, 256);  in build_default_huffman_tables()
169 	priv->default_huffman_table_initialized = 1;  in build_default_huffman_tables()
199 static int parse_DQT(struct jdec_private *priv, const unsigned char *stream)  in parse_DQT()  argument
217      memcpy(priv->Q_tables[qi&0x0F], stream, 64);  in parse_DQT()
218      priv->Q_tables_valid[qi & 0x0f] = 1;  in parse_DQT()
225 static int parse_SOF(struct jdec_private *priv, const unsigned char *stream)  in parse_SOF()  argument
237   priv->nf_components = nr_components;  in parse_SOF()
255      c = &priv->component_infos[i];  in parse_SOF()
266   priv->width[scan_num] = width;  in parse_SOF()
267   priv->height[scan_num] = height;  in parse_SOF()
274 static int parse_SOS(struct jdec_private *priv, const unsigned char *stream)  in parse_SOS()  argument
281   priv->cur_sos.nr_components= nr_components;  in parse_SOS()
287      priv->cur_sos.components[i].component_id = cid;  in parse_SOS()
288      priv->cur_sos.components[i].dc_selector = ((table>>4)&0x0F);  in parse_SOS()
289      priv->cur_sos.components[i].ac_selector = (table&0x0F);  in parse_SOS()
295      if (cid != priv->component_infos[i].cid)  in parse_SOS()
297 	      i, cid, i, priv->component_infos[i].cid);  in parse_SOS()
301   priv->stream = stream+3;  in parse_SOS()
306 int tinyjpeg_parse_SOS(struct jdec_private *priv, const unsigned char *stream)  in tinyjpeg_parse_SOS()  argument
308     return parse_SOS(priv, stream);  in tinyjpeg_parse_SOS()
312 static int parse_DHT(struct jdec_private *priv, const unsigned char *stream)  in parse_DHT()  argument
329         memcpy(priv->HTAC[index & 0xf].bits, stream, 16);  in parse_DHT()
332          memcpy(priv->HTDC[index & 0xf].bits, stream, 16);  in parse_DHT()
349         memcpy(priv->HTAC[index & 0xf].values, stream, count);  in parse_DHT()
350         priv->HTAC_valid[index & 0xf] = 1;  in parse_DHT()
353         memcpy(priv->HTDC[index & 0xf].values, stream, count);  in parse_DHT()
354         priv->HTDC_valid[index & 0xf] = 1;  in parse_DHT()
365 static int parse_DRI(struct jdec_private *priv, const unsigned char *stream)  in parse_DRI()  argument
378   priv->restart_interval = be16_to_cpu(stream+2);  in parse_DRI()
381   trace("Restart interval = %d\n", priv->restart_interval);  in parse_DRI()
389 static int findEOI(struct jdec_private *priv,const unsigned char *stream)  in findEOI()  argument
391 …while (!(*stream == 0xff  && *(stream+1) == 0xd9 )&& stream<=priv->stream_end) //searching for the…  in findEOI()
396   priv->stream_scan=stream;  in findEOI()
400 static int findSOI(struct jdec_private *priv,const unsigned char *stream)  in findSOI()  argument
404       if(stream<=priv->stream_end)  in findSOI()
412    priv->stream=stream+2;  in findSOI()
416 static int parse_JFIF(struct jdec_private *priv, const unsigned char *stream)  in parse_JFIF()  argument
425   next_image_found = findSOI(priv,stream);  in parse_JFIF()
426   stream=priv->stream;  in parse_JFIF()
428    while (!sos_marker_found  && stream<=priv->stream_end)  in parse_JFIF()
439 	 if (parse_SOF(priv, stream) < 0)  in parse_JFIF()
443 	 if (parse_DQT(priv, stream) < 0)  in parse_JFIF()
448 	 if (parse_SOS(priv, stream) < 0)  in parse_JFIF()
453 	 if (parse_DHT(priv, stream) < 0)  in parse_JFIF()
458 	 if (parse_DRI(priv, stream) < 0)  in parse_JFIF()
472         build_default_huffman_tables(priv);  in parse_JFIF()
479   if (   (priv->component_infos[cY].Hfactor < priv->component_infos[cCb].Hfactor)  in parse_JFIF()
480       || (priv->component_infos[cY].Hfactor < priv->component_infos[cCr].Hfactor))  in parse_JFIF()
482   if (   (priv->component_infos[cY].Vfactor < priv->component_infos[cCb].Vfactor)  in parse_JFIF()
483       || (priv->component_infos[cY].Vfactor < priv->component_infos[cCr].Vfactor))  in parse_JFIF()
485   if (   (priv->component_infos[cCb].Hfactor!=1)   in parse_JFIF()
486       || (priv->component_infos[cCr].Hfactor!=1)  in parse_JFIF()
487       || (priv->component_infos[cCb].Vfactor!=1)  in parse_JFIF()
488       || (priv->component_infos[cCr].Vfactor!=1))  in parse_JFIF()
491   findEOI(priv,stream);  in parse_JFIF()
513   struct jdec_private *priv;  in tinyjpeg_init()  local
515   priv = (struct jdec_private *)calloc(1, sizeof(struct jdec_private));  in tinyjpeg_init()
516   if (priv == NULL)  in tinyjpeg_init()
518   return priv;  in tinyjpeg_init()
526 void tinyjpeg_free(struct jdec_private *priv)  in tinyjpeg_free()  argument
528   free(priv);  in tinyjpeg_free()
537 int tinyjpeg_parse_header(struct jdec_private *priv, const unsigned char *buf, unsigned int size)  in tinyjpeg_parse_header()  argument
545   priv->stream_begin = buf;  in tinyjpeg_parse_header()
546   priv->stream_length = size;  in tinyjpeg_parse_header()
547   priv->stream_end = priv->stream_begin + priv->stream_length;  in tinyjpeg_parse_header()
549   priv->stream = priv->stream_begin;  in tinyjpeg_parse_header()
550   ret = parse_JFIF(priv, priv->stream);  in tinyjpeg_parse_header()
555 int tinyjpeg_decode(struct jdec_private *priv)  in tinyjpeg_decode()  argument
620        pic_param.picture_width = priv->width[scan_num];  in tinyjpeg_decode()
621        pic_param.picture_height = priv->height[scan_num];  in tinyjpeg_decode()
622        pic_param.num_components = priv->nf_components;  in tinyjpeg_decode()
626            pic_param.components[i].component_id = priv->component_infos[i].cid;  in tinyjpeg_decode()
627            pic_param.components[i].h_sampling_factor = priv->component_infos[i].Hfactor;  in tinyjpeg_decode()
628            pic_param.components[i].v_sampling_factor = priv->component_infos[i].Vfactor;  in tinyjpeg_decode()
629 …     pic_param.components[i].quantiser_table_selector = priv->component_infos[i].quant_table_index;  in tinyjpeg_decode()
703                                     priv->width[scan_num],priv->height[scan_num], //alignment?  in tinyjpeg_decode()
709                                   priv->width[scan_num], priv->height[scan_num], // alignment?  in tinyjpeg_decode()
729            if (!priv->Q_tables_valid[i])  in tinyjpeg_decode()
733                iq_matrix.quantiser_table[i][j] = priv->Q_tables[i][j];  in tinyjpeg_decode()
747            sizeof(priv->HTDC[0].bits));  in tinyjpeg_decode()
749            sizeof(priv->HTDC[0].values[0]));  in tinyjpeg_decode()
751            if (!priv->HTDC_valid[i] || !priv->HTAC_valid[i])  in tinyjpeg_decode()
754            memcpy(huffman_table.huffman_table[i].num_dc_codes, priv->HTDC[i].bits,  in tinyjpeg_decode()
756            memcpy(huffman_table.huffman_table[i].dc_values, priv->HTDC[i].values,  in tinyjpeg_decode()
758            memcpy(huffman_table.huffman_table[i].num_ac_codes, priv->HTAC[i].bits,  in tinyjpeg_decode()
760            memcpy(huffman_table.huffman_table[i].ac_values, priv->HTAC[i].values,  in tinyjpeg_decode()
773        max_h_factor = priv->component_infos[0].Hfactor;  in tinyjpeg_decode()
774        max_v_factor = priv->component_infos[0].Vfactor;  in tinyjpeg_decode()
776        slice_param.slice_data_size = (priv->stream_scan - priv->stream);  in tinyjpeg_decode()
781        slice_param.num_components = priv->cur_sos.nr_components;  in tinyjpeg_decode()
783 …slice_param.components[i].component_selector = priv->cur_sos.components[i].component_id; /* FIXME:…  in tinyjpeg_decode()
784 …slice_param.components[i].dc_table_selector = priv->cur_sos.components[i].dc_selector;  /* FIXME: …  in tinyjpeg_decode()
785 …slice_param.components[i].ac_table_selector = priv->cur_sos.components[i].ac_selector;  /* FIXME: …  in tinyjpeg_decode()
787        slice_param.restart_interval = priv->restart_interval;  in tinyjpeg_decode()
788        slice_param.num_mcus = ((priv->width[scan_num]+max_h_factor*8-1)/(max_h_factor*8))*  in tinyjpeg_decode()
789 …                       ((priv->height[scan_num]+max_v_factor*8-1)/(max_v_factor*8)); // ?? 720/16?   in tinyjpeg_decode()
800                                  priv->stream_scan - priv->stream,  in tinyjpeg_decode()
802                                  (void*)priv->stream, // jpeg_clip,  in tinyjpeg_decode()
835            src_rect.width  = priv->width[scan_num];  in tinyjpeg_decode()
836            src_rect.height = priv->height[scan_num];  in tinyjpeg_decode()
848        parse_JFIF(priv,priv->stream);  in tinyjpeg_decode()
849        if(priv->width[scan_num] == 0 && priv->height[scan_num] == 0)  in tinyjpeg_decode()
858 const char *tinyjpeg_get_errorstring(struct jdec_private *priv)  in tinyjpeg_get_errorstring()  argument
861   priv = priv;  in tinyjpeg_get_errorstring()
864 void tinyjpeg_get_size(struct jdec_private *priv, unsigned int *width, unsigned int *height)  in tinyjpeg_get_size()  argument
866   *width = priv->width[scan_num];  in tinyjpeg_get_size()
867   *height = priv->height[scan_num];  in tinyjpeg_get_size()