output.c
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上传日期:2021-12-09
资源大小:5084k
文件大小:16k
源码类别:
Audio
开发平台:
Visual C++
- /*!
- ************************************************************************
- * file output.c
- *
- * brief
- * Output an image and Trance support
- *
- * author
- * Main contributors (see contributors.h for copyright, address and affiliation details)
- * - Karsten Suehring <suehring@hhi.de>
- ************************************************************************
- */
- #include "contributors.h"
- #include "global.h"
- #include "image.h"
- #include "input.h"
- void write_out_picture(StorablePicture *p, int p_out);
- FrameStore* out_buffer;
- /*!
- ************************************************************************
- * brief
- * Convert image plane to temporary buffer for file writing
- * param imgX
- * Pointer to image plane
- * param buf
- * Buffer for file output
- * param size_x
- * horizontal size
- * param size_y
- * vertical size
- * param symbol_size_in_bytes
- * number of bytes used per pel
- * param crop_left
- * pixels to crop from left
- * param crop_right
- * pixels to crop from right
- * param crop_top
- * pixels to crop from top
- * param crop_bottom
- * pixels to crop from bottom
- ************************************************************************
- */
- void img2buf (imgpel** imgX, unsigned char* buf, int size_x, int size_y, int symbol_size_in_bytes, int crop_left, int crop_right, int crop_top, int crop_bottom)
- {
- int i,j;
- int twidth = size_x - crop_left - crop_right;
- int theight = size_y - crop_top - crop_bottom;
- int size = 0;
- unsigned char ui8;
- unsigned short tmp16, ui16;
- unsigned long tmp32, ui32;
- if (( sizeof(char) == sizeof (imgpel)) && ( sizeof(char) == symbol_size_in_bytes))
- {
- // imgpel == pixel_in_file == 1 byte -> simple copy
- if (crop_left == 0 && crop_top == 0 && crop_right == 0 && crop_bottom == 0)
- memcpy(buf,&(imgX[0][0]), twidth * theight);
- else
- {
- for(i=0;i<theight;i++)
- memcpy(buf + crop_left + (i * twidth),&(imgX[i + crop_top][crop_left]), twidth);
- }
- }
- else
- {
- // sizeof (imgpel) > sizeof(char)
- if (testEndian())
- {
- // big endian
- switch (symbol_size_in_bytes)
- {
- case 1:
- {
- for(i=crop_top;i<size_y-crop_bottom;i++)
- for(j=crop_left;j<size_x-crop_right;j++)
- {
- ui8 = (unsigned char) (imgX[i][j]);
- buf[(j-crop_left+((i-crop_top)*(twidth)))] = ui8;
- }
- break;
- }
- case 2:
- {
- for(i=crop_top;i<size_y-crop_bottom;i++)
- for(j=crop_left;j<size_x-crop_right;j++)
- {
- tmp16 = (unsigned short) (imgX[i][j]);
- ui16 = (tmp16 >> 8) | ((tmp16&0xFF)<<8);
- memcpy(buf+((j-crop_left+((i-crop_top)*(twidth)))*2),&(ui16), 2);
- }
- break;
- }
- case 4:
- {
- for(i=crop_top;i<size_y-crop_bottom;i++)
- for(j=crop_left;j<size_x-crop_right;j++)
- {
- tmp32 = (unsigned long) (imgX[i][j]);
- ui32 = ((tmp32&0xFF00)<<8) | ((tmp32&0xFF)<<24) | ((tmp32&0xFF0000)>>8) | ((tmp32&0xFF000000)>>24);
- memcpy(buf+((j-crop_left+((i-crop_top)*(twidth)))*4),&(ui32), 4);
- }
- break;
- }
- default:
- {
- error ("writing only to formats of 8, 16 or 32 bit allowed on big endian architecture", 500);
- break;
- }
- }
- }
- else
- {
- // little endian
- if (sizeof (imgpel) < symbol_size_in_bytes)
- {
- // this should not happen. we should not have smaller imgpel than our source material.
- size = sizeof (imgpel);
- // clear buffer
- memset (buf, 0, (twidth*theight*symbol_size_in_bytes));
- }
- else
- {
- size = symbol_size_in_bytes;
- }
- for(i=crop_top;i<size_y-crop_bottom;i++)
- {
- int i_pos = (i-crop_top)*(twidth) - crop_left;
- for(j=crop_left;j<size_x-crop_right;j++)
- {
- memcpy(buf+((j + i_pos)*symbol_size_in_bytes),&(imgX[i][j]), size);
- }
- }
- }
- }
- }
- /*!
- ************************************************************************
- * brief
- * Writes out a storable picture without doing any output modifications
- * param p
- * Picture to be written
- * param p_out
- * Output file
- * param real_structure
- * real picture structure
- ************************************************************************
- */
- void write_picture(StorablePicture *p, int p_out, int real_structure)
- {
- write_out_picture(p, p_out);
- }
- /*!
- ************************************************************************
- * brief
- * Writes out a storable picture
- * param p
- * Picture to be written
- * param p_out
- * Output file
- ************************************************************************
- */
- void write_out_picture(StorablePicture *p, int p_out)
- {
- int SubWidthC [4]= { 1, 2, 2, 1};
- int SubHeightC [4]= { 1, 2, 1, 1};
- int crop_left, crop_right, crop_top, crop_bottom;
- int symbol_size_in_bytes = img->out_unit_size_on_disk/8;
- Boolean rgb_output = (Boolean) (params->rgb_input_flag != 0 && params->yuv_format==3);
- unsigned char *buf;
- if (p->non_existing)
- return;
- if (p_out == -1)
- return;
- if (p->frame_cropping_flag)
- {
- crop_left = SubWidthC[p->chroma_format_idc] * p->frame_cropping_rect_left_offset;
- crop_right = SubWidthC[p->chroma_format_idc] * p->frame_cropping_rect_right_offset;
- crop_top = SubHeightC[p->chroma_format_idc]*( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_top_offset;
- crop_bottom = SubHeightC[p->chroma_format_idc]*( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_bottom_offset;
- }
- else
- {
- crop_left = crop_right = crop_top = crop_bottom = 0;
- }
- //printf ("write frame size: %dx%dn", p->size_x-crop_left-crop_right,p->size_y-crop_top-crop_bottom );
- // KS: this buffer should actually be allocated only once, but this is still much faster than the previous version
- buf = malloc (p->size_x * p->size_y * symbol_size_in_bytes);
- if (NULL==buf)
- {
- no_mem_exit("write_out_picture: buf");
- }
- if(rgb_output)
- {
- crop_left = p->frame_cropping_rect_left_offset;
- crop_right = p->frame_cropping_rect_right_offset;
- crop_top = ( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_top_offset;
- crop_bottom = ( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_bottom_offset;
- img2buf (p->imgUV[1], buf, p->size_x_cr, p->size_y_cr, symbol_size_in_bytes, crop_left, crop_right, crop_top, crop_bottom);
- write(p_out, buf, (p->size_y_cr-crop_bottom-crop_top)*(p->size_x_cr-crop_right-crop_left)*symbol_size_in_bytes);
- if (p->frame_cropping_flag)
- {
- crop_left = SubWidthC[p->chroma_format_idc] * p->frame_cropping_rect_left_offset;
- crop_right = SubWidthC[p->chroma_format_idc] * p->frame_cropping_rect_right_offset;
- crop_top = SubHeightC[p->chroma_format_idc]*( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_top_offset;
- crop_bottom = SubHeightC[p->chroma_format_idc]*( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_bottom_offset;
- }
- else
- {
- crop_left = crop_right = crop_top = crop_bottom = 0;
- }
- }
- img2buf (p->imgY, buf, p->size_x, p->size_y, symbol_size_in_bytes, crop_left, crop_right, crop_top, crop_bottom);
- write(p_out, buf, (p->size_y-crop_bottom-crop_top)*(p->size_x-crop_right-crop_left)*symbol_size_in_bytes);
- if (p->chroma_format_idc!=YUV400)
- {
- crop_left = p->frame_cropping_rect_left_offset;
- crop_right = p->frame_cropping_rect_right_offset;
- crop_top = ( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_top_offset;
- crop_bottom = ( 2 - p->frame_mbs_only_flag ) * p->frame_cropping_rect_bottom_offset;
- img2buf (p->imgUV[0], buf, p->size_x_cr, p->size_y_cr, symbol_size_in_bytes, crop_left, crop_right, crop_top, crop_bottom);
- write(p_out, buf, (p->size_y_cr-crop_bottom-crop_top)*(p->size_x_cr-crop_right-crop_left)* symbol_size_in_bytes);
- if (!rgb_output)
- {
- img2buf (p->imgUV[1], buf, p->size_x_cr, p->size_y_cr, symbol_size_in_bytes, crop_left, crop_right, crop_top, crop_bottom);
- write(p_out, buf, (p->size_y_cr-crop_bottom-crop_top)*(p->size_x_cr-crop_right-crop_left)*symbol_size_in_bytes);
- }
- }
- free(buf);
- // fsync(p_out);
- }
- /*!
- ************************************************************************
- * brief
- * Initialize output buffer for direct output
- ************************************************************************
- */
- void init_out_buffer()
- {
- out_buffer = alloc_frame_store();
- }
- /*!
- ************************************************************************
- * brief
- * Uninitialize output buffer for direct output
- ************************************************************************
- */
- void uninit_out_buffer()
- {
- free_frame_store(out_buffer);
- out_buffer=NULL;
- }
- /*!
- ************************************************************************
- * brief
- * Initialize picture memory with (Y:0,U:128,V:128)
- ************************************************************************
- */
- void clear_picture(StorablePicture *p)
- {
- int i;
- if (img->bitdepth_luma == 8)
- {
- // this does not seem to be right since it seems to work only for imgpel == byte
- // should be fixed
- for(i=0;i<p->size_y;i++)
- memset(p->imgY[i], img->dc_pred_value_comp[0], p->size_x*sizeof(imgpel));
- }
- else
- {
- int j;
- for(i=0;i < p->size_y; i++)
- for(j=0;j < p->size_x; j++)
- p->imgY[i][j] = img->dc_pred_value_comp[0];
- }
- if (img->bitdepth_chroma == 8)
- {
- for(i=0;i<p->size_y_cr;i++)
- memset(p->imgUV[0][i], img->dc_pred_value_comp[1], p->size_x_cr*sizeof(imgpel));
- for(i=0;i<p->size_y_cr;i++)
- memset(p->imgUV[1][i], img->dc_pred_value_comp[2], p->size_x_cr*sizeof(imgpel));
- }
- else
- {
- int k, j;
- for (k = 0; k < 2; k++)
- {
- for(i=0;i<p->size_y_cr;i++)
- for(j=0;j < p->size_x_cr; j++)
- p->imgUV[k][i][j] = img->dc_pred_value_comp[1];
- }
- }
- }
- /*!
- ************************************************************************
- * brief
- * Write out not paired direct output fields. A second empty field is generated
- * and combined into the frame buffer.
- * param fs
- * FrameStore that contains a single field
- * param p_out
- * Output file
- ************************************************************************
- */
- void write_unpaired_field(FrameStore* fs, int p_out)
- {
- StorablePicture *p;
- assert (fs->is_used<3);
- if(fs->is_used &1)
- {
- // we have a top field
- // construct an empty bottom field
- p = fs->top_field;
- fs->bottom_field = alloc_storable_picture(BOTTOM_FIELD, p->size_x, p->size_y, p->size_x_cr, p->size_y_cr);
- fs->bottom_field->chroma_format_idc = p->chroma_format_idc;
- clear_picture(fs->bottom_field);
- dpb_combine_field_yuv(fs);
- write_picture (fs->frame, p_out, TOP_FIELD);
- }
- if(fs->is_used &2)
- {
- // we have a bottom field
- // construct an empty top field
- p = fs->bottom_field;
- fs->top_field = alloc_storable_picture(TOP_FIELD, p->size_x, p->size_y, p->size_x_cr, p->size_y_cr);
- clear_picture(fs->top_field);
- fs->top_field->chroma_format_idc = p->chroma_format_idc;
- clear_picture(fs->top_field);
- fs ->top_field->frame_cropping_flag = fs->bottom_field->frame_cropping_flag;
- if(fs ->top_field->frame_cropping_flag)
- {
- fs ->top_field->frame_cropping_rect_top_offset = fs->bottom_field->frame_cropping_rect_top_offset;
- fs ->top_field->frame_cropping_rect_bottom_offset = fs->bottom_field->frame_cropping_rect_bottom_offset;
- fs ->top_field->frame_cropping_rect_left_offset = fs->bottom_field->frame_cropping_rect_left_offset;
- fs ->top_field->frame_cropping_rect_right_offset = fs->bottom_field->frame_cropping_rect_right_offset;
- }
- dpb_combine_field_yuv(fs);
- write_picture (fs->frame, p_out, BOTTOM_FIELD);
- }
- fs->is_used=3;
- }
- /*!
- ************************************************************************
- * brief
- * Write out unpaired fields from output buffer.
- * param p_out
- * Output file
- ************************************************************************
- */
- void flush_direct_output(int p_out)
- {
- write_unpaired_field(out_buffer, p_out);
- free_storable_picture(out_buffer->frame);
- out_buffer->frame = NULL;
- free_storable_picture(out_buffer->top_field);
- out_buffer->top_field = NULL;
- free_storable_picture(out_buffer->bottom_field);
- out_buffer->bottom_field = NULL;
- out_buffer->is_used = 0;
- }
- /*!
- ************************************************************************
- * brief
- * Write a frame (from FrameStore)
- * param fs
- * FrameStore containing the frame
- * param p_out
- * Output file
- ************************************************************************
- */
- void write_stored_frame( FrameStore *fs,int p_out)
- {
- // make sure no direct output field is pending
- flush_direct_output(p_out);
- if (fs->is_used<3)
- {
- write_unpaired_field(fs, p_out);
- }
- else
- {
- write_picture(fs->frame, p_out, FRAME);
- }
- fs->is_output = 1;
- }
- /*!
- ************************************************************************
- * brief
- * Directly output a picture without storing it in the DPB. Fields
- * are buffered before they are written to the file.
- * param p
- * Picture for output
- * param p_out
- * Output file
- ************************************************************************
- */
- void direct_output(StorablePicture *p, int p_out)
- {
- switch ( p->structure )
- {
- case FRAME:
- // we have a frame (or complementary field pair)
- // so output it directly
- flush_direct_output(p_out);
- write_picture (p, p_out, FRAME);
- free_storable_picture(p);
- return;
- break;
- case TOP_FIELD:
- if (out_buffer->is_used &1)
- flush_direct_output(p_out);
- out_buffer->top_field = p;
- out_buffer->is_used |= 1;
- break;
- case BOTTOM_FIELD:
- if (out_buffer->is_used &2)
- flush_direct_output(p_out);
- out_buffer->bottom_field = p;
- out_buffer->is_used |= 2;
- break;
- default:
- printf("invalid picture typen");
- break;
- }
- if (out_buffer->is_used == 3)
- {
- // we have both fields, so output them
- dpb_combine_field_yuv(out_buffer);
- write_picture (out_buffer->frame, p_out, FRAME);
- free_storable_picture(out_buffer->frame);
- out_buffer->frame = NULL;
- free_storable_picture(out_buffer->top_field);
- out_buffer->top_field = NULL;
- free_storable_picture(out_buffer->bottom_field);
- out_buffer->bottom_field = NULL;
- out_buffer->is_used = 0;
- }
- }
- /*!
- ************************************************************************
- * brief
- * For adaptive frame/field coding remove dangling top field from direct
- * output frame version instead.
- * param p
- * Picture for output
- * param p_out
- * Output file
- ************************************************************************
- */
- void direct_output_paff(StorablePicture *p, int p_out)
- {
- printf("Warning!!! Frame can't fit in DPB. Displayed out of sequence.n");
- free_storable_picture(out_buffer->frame);
- out_buffer->frame = NULL;
- free_storable_picture(out_buffer->top_field);
- out_buffer->top_field = NULL;
- free_storable_picture(out_buffer->bottom_field);
- out_buffer->bottom_field = NULL;
- out_buffer->is_used = 0;
- direct_output(p, p_out);
- }