mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
57bafcdb06
to working), reworked YUY2 support for speed, cleaned up compiler warnings, replaced printf()'s with mp_msg()'s git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4912 b3059339-0415-0410-9bf9-f77b7e298cf2
883 lines
26 KiB
C
883 lines
26 KiB
C
/* ------------------------------------------------------------------------
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* Radius Cinepak Video Decoder
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*
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* Dr. Tim Ferguson, 2001.
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* For more details on the algorithm:
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* http://www.csse.monash.edu.au/~timf/videocodec.html
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*
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* This is basically a vector quantiser with adaptive vector density. The
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* frame is segmented into 4x4 pixel blocks, and each block is coded using
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* either 1 or 4 vectors.
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*
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* There are still some issues with this code yet to be resolved. In
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* particular with decoding in the strip boundaries.
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* ------------------------------------------------------------------------ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <math.h>
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#include "config.h"
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#include "mp_msg.h"
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#define DBUG 0
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#define MAX_STRIPS 32
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/* ------------------------------------------------------------------------ */
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typedef struct
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{
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unsigned char y0, y1, y2, y3;
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char u, v;
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// These variables are for YV12 output: The v1 vars are for
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// when the vector is doublesized and used by itself to paint a
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// 4x4 block.
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// This quad (y0 y0 y1 y1) is used on the 2 upper rows.
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unsigned long yv12_v1_u;
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// This quad (y2 y2 y3 y3) is used on the 2 lower rows.
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unsigned long yv12_v1_l;
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// The v4 vars are for when the vector is used as 1 of 4 vectors
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// to paint a 4x4 block.
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// Upper pair (y0 y1):
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unsigned short yv12_v4_u;
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// Lower pair (y2 y3):
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unsigned short yv12_v4_l;
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// These longs are for YUYV output: The v1 vars are for when the
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// vector is doublesized and used by itself to paint a 4x4 block.
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// The names stand for the upper-left, upper-right,
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// lower-left, and lower-right YUYV pixel pairs.
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unsigned long yuyv_v1_ul, yuyv_v1_ur;
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unsigned long yuyv_v1_ll, yuyv_v1_lr;
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// The v4 vars are for when the vector is used as 1 of 4 vectors
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// to paint a 4x4 block. The names stand for upper and lower
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// YUYV pixel pairs.
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unsigned long yuyv_v4_u, yuyv_v4_l;
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// These longs are for BGR32 output
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unsigned long rgb0, rgb1, rgb2, rgb3;
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// These char arrays are for BGR24 output
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unsigned char r[4], g[4], b[4];
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} cvid_codebook;
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typedef struct {
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cvid_codebook *v4_codebook[MAX_STRIPS];
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cvid_codebook *v1_codebook[MAX_STRIPS];
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unsigned long strip_num;
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} cinepak_info;
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/* ------------------------------------------------------------------------ */
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static unsigned char *in_buffer, uiclip[1024], *uiclp = NULL;
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#define SCALEBITS 16
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#define ONE_HALF ((long) 1 << (SCALEBITS-1))
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#define FIX(x) ((long) ((x) * (1L<<SCALEBITS) + 0.5))
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static long CU_Y_tab[256], CV_Y_tab[256], CU_Cb_tab[256], CV_Cb_tab[256],
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CU_Cr_tab[256], CV_Cr_tab[256];
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#define get_byte() *(in_buffer++)
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#define skip_byte() in_buffer++
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#define get_word() ((unsigned short)(in_buffer += 2, \
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(in_buffer[-2] << 8 | in_buffer[-1])))
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#define get_long() ((unsigned long)(in_buffer += 4, \
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(in_buffer[-4] << 24 | in_buffer[-3] << 16 | in_buffer[-2] << 8 | in_buffer[-1])))
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/* ---------------------------------------------------------------------- */
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#define PACK_YV12_V1_Y(cb,y0,y1) ((((unsigned char)cb->y1)<<24)|(cb->y1<<16)|(((unsigned char)cb->y0)<<8)|(cb->y0))
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#define PACK_YV12_V4_Y(cb,y0,y1) ((((unsigned char)cb->y1)<<8)|(cb->y0))
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static inline void read_codebook_yv12(cvid_codebook *c, int mode)
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{
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unsigned char y0, y1, y2, y3, u, v;
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int y_uv;
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if(mode) /* black and white */
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{
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c->y0 = get_byte();
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c->y1 = get_byte();
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c->y2 = get_byte();
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c->y3 = get_byte();
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c->u = c->v = 128;
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}
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else /* colour */
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{
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y0 = get_byte(); /* luma */
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y1 = get_byte();
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y2 = get_byte();
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y3 = get_byte();
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u = 128+get_byte(); /* chroma */
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v = 128+get_byte();
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/* YUV * inv(CinYUV)
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* | Y | | 1 -0.0655 0.0110 | | CY |
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* | Cb | = | 0 1.1656 -0.0062 | | CU |
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* | Cr | | 0 0.0467 1.4187 | | CV |
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*/
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y_uv = (int)((CU_Y_tab[u] + CV_Y_tab[v]) >> SCALEBITS);
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c->y0 = uiclp[y0 + y_uv];
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c->y1 = uiclp[y1 + y_uv];
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c->y2 = uiclp[y2 + y_uv];
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c->y3 = uiclp[y3 + y_uv];
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c->u = uiclp[(int)((CU_Cb_tab[u] + CV_Cb_tab[v]) >> SCALEBITS)];
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c->v = uiclp[(int)((CU_Cr_tab[u] + CV_Cr_tab[v]) >> SCALEBITS)];
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c->yv12_v1_u = PACK_YV12_V1_Y(c, y0, y1);
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c->yv12_v1_l = PACK_YV12_V1_Y(c, y2, y3);
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c->yv12_v4_u = PACK_YV12_V4_Y(c, y0, y1);
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c->yv12_v4_l = PACK_YV12_V4_Y(c, y2, y3);
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}
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}
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/* ---------------------------------------------------------------------- */
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static unsigned char *yv12_y_plane = NULL;
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static unsigned char *yv12_v_plane = NULL;
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static unsigned char *yv12_u_plane = NULL;
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inline void cvid_v1_yv12(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb)
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{
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int uv_offset = (frm - yv12_y_plane) / 4;
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int row_inc = stride / sizeof(unsigned long);
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unsigned long *y_ptr = (unsigned long *)frm;
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unsigned char *v_ptr = yv12_v_plane + uv_offset;
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unsigned char *u_ptr = yv12_u_plane + uv_offset;
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int uv_stride = stride / 2;
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// take care of the luminance
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if(y_ptr > (unsigned long *)end) return;
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*y_ptr = cb->yv12_v1_u;
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y_ptr += row_inc; if(y_ptr > (unsigned long *)end) return;
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*y_ptr = cb->yv12_v1_u;
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y_ptr += row_inc; if(y_ptr > (unsigned long *)end) return;
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*y_ptr = cb->yv12_v1_l;
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y_ptr += row_inc; if(y_ptr > (unsigned long *)end) return;
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*y_ptr = cb->yv12_v1_l;
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// now for the chrominance
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v_ptr[0] = cb->v;
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v_ptr[1] = cb->v;
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v_ptr += uv_stride;
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v_ptr[0] = cb->v;
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v_ptr[1] = cb->v;
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u_ptr[0] = cb->u;
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u_ptr[1] = cb->u;
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u_ptr += uv_stride;
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u_ptr[0] = cb->u;
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u_ptr[1] = cb->u;
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}
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/* ---------------------------------------------------------------------- */
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inline void cvid_v4_yv12(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb0,
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cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
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{
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int uv_offset = (frm - yv12_y_plane) / 4;
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int row_inc = stride / sizeof(unsigned short);
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unsigned short *y_ptr = (unsigned short *)frm;
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unsigned char *v_ptr = yv12_v_plane + uv_offset;
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unsigned char *u_ptr = yv12_u_plane + uv_offset;
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int uv_stride = stride / 2;
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// take care of the luminance
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if(y_ptr > (unsigned short *)end) return;
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y_ptr[0] = cb0->yv12_v4_u;
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y_ptr[1] = cb1->yv12_v4_u;
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y_ptr += row_inc; if(y_ptr > (unsigned short *)end) return;
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y_ptr[0] = cb0->yv12_v4_l;
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y_ptr[1] = cb1->yv12_v4_l;
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y_ptr += row_inc; if(y_ptr > (unsigned short *)end) return;
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y_ptr[0] = cb2->yv12_v4_u;
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y_ptr[1] = cb3->yv12_v4_u;
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y_ptr += row_inc; if(y_ptr > (unsigned short *)end) return;
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y_ptr[0] = cb2->yv12_v4_l;
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y_ptr[1] = cb3->yv12_v4_l;
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// now for the chrominance
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v_ptr[0] = cb0->v;
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v_ptr[1] = cb1->v;
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v_ptr += uv_stride;
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v_ptr[0] = cb2->v;
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v_ptr[1] = cb3->v;
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u_ptr[0] = cb0->u;
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u_ptr[1] = cb1->u;
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u_ptr += uv_stride;
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u_ptr[0] = cb2->u;
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u_ptr[1] = cb3->u;
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}
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/* ---------------------------------------------------------------------- */
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#define PACK_YUYV(cb,y0,y1,u,v) ((((unsigned char)cb->v)<<24)|(cb->y1<<16)|(((unsigned char)cb->u)<<8)|(cb->y0))
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static inline void read_codebook_yuy2(cvid_codebook *c, int mode)
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{
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unsigned char y0, y1, y2, y3, u, v;
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int y_uv;
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if(mode) /* black and white */
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{
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c->y0 = get_byte();
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c->y1 = get_byte();
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c->y2 = get_byte();
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c->y3 = get_byte();
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c->u = c->v = 128;
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}
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else /* colour */
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{
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y0 = get_byte(); /* luma */
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y1 = get_byte();
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y2 = get_byte();
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y3 = get_byte();
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u = 128+get_byte(); /* chroma */
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v = 128+get_byte();
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/* YUV * inv(CinYUV)
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* | Y | | 1 -0.0655 0.0110 | | CY |
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* | Cb | = | 0 1.1656 -0.0062 | | CU |
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* | Cr | | 0 0.0467 1.4187 | | CV |
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*/
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y_uv = (int)((CU_Y_tab[u] + CV_Y_tab[v]) >> SCALEBITS);
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c->y0 = uiclp[y0 + y_uv];
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c->y1 = uiclp[y1 + y_uv];
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c->y2 = uiclp[y2 + y_uv];
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c->y3 = uiclp[y3 + y_uv];
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c->u = uiclp[(int)((CU_Cb_tab[u] + CV_Cb_tab[v]) >> SCALEBITS)];
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c->v = uiclp[(int)((CU_Cr_tab[u] + CV_Cr_tab[v]) >> SCALEBITS)];
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c->yuyv_v4_u = PACK_YUYV(c, y0, y1, u, v);
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c->yuyv_v4_l = PACK_YUYV(c, y2, y3, u, v);
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c->yuyv_v1_ul = PACK_YUYV(c, y0, y0, u, v);
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c->yuyv_v1_ur = PACK_YUYV(c, y1, y1, u, v);
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c->yuyv_v1_ll = PACK_YUYV(c, y2, y2, u, v);
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c->yuyv_v1_lr = PACK_YUYV(c, y3, y3, u, v);
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}
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}
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/* ------------------------------------------------------------------------ */
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inline void cvid_v1_yuy2(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb)
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{
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unsigned long *vptr = (unsigned long *)frm;
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int row_inc = stride/4;
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if(vptr > (unsigned long *)end) return;
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vptr[0] = cb->yuyv_v1_ul;
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vptr[1] = cb->yuyv_v1_ur;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb->yuyv_v1_ul;
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vptr[1] = cb->yuyv_v1_ur;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb->yuyv_v1_ll;
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vptr[1] = cb->yuyv_v1_lr;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb->yuyv_v1_ll;
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vptr[1] = cb->yuyv_v1_lr;
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}
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/* ------------------------------------------------------------------------ */
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inline void cvid_v4_yuy2(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb0,
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cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
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{
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unsigned long *vptr = (unsigned long *)frm;
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int row_inc = stride/4;
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if(vptr > (unsigned long *)end) return;
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vptr[0] = cb0->yuyv_v4_u;
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vptr[1] = cb1->yuyv_v4_u;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb0->yuyv_v4_l;
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vptr[1] = cb1->yuyv_v4_l;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb2->yuyv_v4_u;
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vptr[1] = cb3->yuyv_v4_u;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb2->yuyv_v4_l;
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vptr[1] = cb3->yuyv_v4_l;
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}
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/* ---------------------------------------------------------------------- */
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static inline void read_codebook_32(cvid_codebook *c, int mode)
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{
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int uvr, uvg, uvb;
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if(mode) /* black and white */
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{
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c->y0 = get_byte();
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c->y1 = get_byte();
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c->y2 = get_byte();
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c->y3 = get_byte();
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c->u = c->v = 0;
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c->rgb0 = (c->y0 << 16) | (c->y0 << 8) | c->y0;
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c->rgb1 = (c->y1 << 16) | (c->y1 << 8) | c->y1;
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c->rgb2 = (c->y2 << 16) | (c->y2 << 8) | c->y2;
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c->rgb3 = (c->y3 << 16) | (c->y3 << 8) | c->y3;
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}
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else /* colour */
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{
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c->y0 = get_byte(); /* luma */
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c->y1 = get_byte();
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c->y2 = get_byte();
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c->y3 = get_byte();
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c->u = get_byte(); /* chroma */
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c->v = get_byte();
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uvr = c->v << 1;
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uvg = -((c->u+1) >> 1) - c->v;
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uvb = c->u << 1;
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c->rgb0 = (uiclp[c->y0 + uvr] << 16) | (uiclp[c->y0 + uvg] << 8) | uiclp[c->y0 + uvb];
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c->rgb1 = (uiclp[c->y1 + uvr] << 16) | (uiclp[c->y1 + uvg] << 8) | uiclp[c->y1 + uvb];
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c->rgb2 = (uiclp[c->y2 + uvr] << 16) | (uiclp[c->y2 + uvg] << 8) | uiclp[c->y2 + uvb];
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c->rgb3 = (uiclp[c->y3 + uvr] << 16) | (uiclp[c->y3 + uvg] << 8) | uiclp[c->y3 + uvb];
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}
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}
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/* ------------------------------------------------------------------------ */
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inline void cvid_v1_32(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb)
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{
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unsigned long *vptr = (unsigned long *)frm, rgb;
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int row_inc = stride/4;
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vptr[0] = rgb = cb->rgb0; vptr[1] = rgb;
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vptr[2] = rgb = cb->rgb1; vptr[3] = rgb;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = rgb = cb->rgb0; vptr[1] = rgb;
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vptr[2] = rgb = cb->rgb1; vptr[3] = rgb;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = rgb = cb->rgb2; vptr[1] = rgb;
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vptr[2] = rgb = cb->rgb3; vptr[3] = rgb;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = rgb = cb->rgb2; vptr[1] = rgb;
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vptr[2] = rgb = cb->rgb3; vptr[3] = rgb;
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}
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/* ------------------------------------------------------------------------ */
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inline void cvid_v4_32(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb0,
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cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
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{
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unsigned long *vptr = (unsigned long *)frm;
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int row_inc = stride/4;
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vptr[0] = cb0->rgb0;
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vptr[1] = cb0->rgb1;
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vptr[2] = cb1->rgb0;
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vptr[3] = cb1->rgb1;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb0->rgb2;
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vptr[1] = cb0->rgb3;
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vptr[2] = cb1->rgb2;
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vptr[3] = cb1->rgb3;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb2->rgb0;
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vptr[1] = cb2->rgb1;
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vptr[2] = cb3->rgb0;
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vptr[3] = cb3->rgb1;
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vptr += row_inc; if(vptr > (unsigned long *)end) return;
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vptr[0] = cb2->rgb2;
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vptr[1] = cb2->rgb3;
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vptr[2] = cb3->rgb2;
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vptr[3] = cb3->rgb3;
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}
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/* ---------------------------------------------------------------------- */
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static inline void read_codebook_24(cvid_codebook *c, int mode)
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{
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int uvr, uvg, uvb;
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if(mode) /* black and white */
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{
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c->y0 = get_byte();
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c->y1 = get_byte();
|
|
c->y2 = get_byte();
|
|
c->y3 = get_byte();
|
|
c->u = c->v = 0;
|
|
|
|
c->r[0] = c->g[0] = c->b[0] = c->y0;
|
|
c->r[1] = c->g[1] = c->b[1] = c->y1;
|
|
c->r[2] = c->g[2] = c->b[2] = c->y2;
|
|
c->r[3] = c->g[3] = c->b[3] = c->y3;
|
|
}
|
|
else /* colour */
|
|
{
|
|
c->y0 = get_byte(); /* luma */
|
|
c->y1 = get_byte();
|
|
c->y2 = get_byte();
|
|
c->y3 = get_byte();
|
|
c->u = get_byte(); /* chroma */
|
|
c->v = get_byte();
|
|
|
|
uvr = c->v << 1;
|
|
uvg = -((c->u+1) >> 1) - c->v;
|
|
uvb = c->u << 1;
|
|
|
|
c->r[0] = uiclp[c->y0 + uvr]; c->g[0] = uiclp[c->y0 + uvg]; c->b[0] = uiclp[c->y0 + uvb];
|
|
c->r[1] = uiclp[c->y1 + uvr]; c->g[1] = uiclp[c->y1 + uvg]; c->b[1] = uiclp[c->y1 + uvb];
|
|
c->r[2] = uiclp[c->y2 + uvr]; c->g[2] = uiclp[c->y2 + uvg]; c->b[2] = uiclp[c->y2 + uvb];
|
|
c->r[3] = uiclp[c->y3 + uvr]; c->g[3] = uiclp[c->y3 + uvg]; c->b[3] = uiclp[c->y3 + uvb];
|
|
}
|
|
}
|
|
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
void cvid_v1_24(unsigned char *vptr, unsigned char *end, int stride, cvid_codebook *cb)
|
|
{
|
|
unsigned char r, g, b;
|
|
int row_inc = stride-4*3;
|
|
|
|
*vptr++ = b = cb->b[0]; *vptr++ = g = cb->g[0]; *vptr++ = r = cb->r[0];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
*vptr++ = b = cb->b[1]; *vptr++ = g = cb->g[1]; *vptr++ = r = cb->r[1];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = b = cb->b[0]; *vptr++ = g = cb->g[0]; *vptr++ = r = cb->r[0];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
*vptr++ = b = cb->b[1]; *vptr++ = g = cb->g[1]; *vptr++ = r = cb->r[1];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = b = cb->b[2]; *vptr++ = g = cb->g[2]; *vptr++ = r = cb->r[2];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
*vptr++ = b = cb->b[3]; *vptr++ = g = cb->g[3]; *vptr++ = r = cb->r[3];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = b = cb->b[2]; *vptr++ = g = cb->g[2]; *vptr++ = r = cb->r[2];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
*vptr++ = b = cb->b[3]; *vptr++ = g = cb->g[3]; *vptr++ = r = cb->r[3];
|
|
*vptr++ = b; *vptr++ = g; *vptr++ = r;
|
|
}
|
|
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
void cvid_v4_24(unsigned char *vptr, unsigned char *end, int stride, cvid_codebook *cb0,
|
|
cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
|
|
{
|
|
int row_inc = stride-4*3;
|
|
|
|
*vptr++ = cb0->b[0]; *vptr++ = cb0->g[0]; *vptr++ = cb0->r[0];
|
|
*vptr++ = cb0->b[1]; *vptr++ = cb0->g[1]; *vptr++ = cb0->r[1];
|
|
*vptr++ = cb1->b[0]; *vptr++ = cb1->g[0]; *vptr++ = cb1->r[0];
|
|
*vptr++ = cb1->b[1]; *vptr++ = cb1->g[1]; *vptr++ = cb1->r[1];
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = cb0->b[2]; *vptr++ = cb0->g[2]; *vptr++ = cb0->r[2];
|
|
*vptr++ = cb0->b[3]; *vptr++ = cb0->g[3]; *vptr++ = cb0->r[3];
|
|
*vptr++ = cb1->b[2]; *vptr++ = cb1->g[2]; *vptr++ = cb1->r[2];
|
|
*vptr++ = cb1->b[3]; *vptr++ = cb1->g[3]; *vptr++ = cb1->r[3];
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = cb2->b[0]; *vptr++ = cb2->g[0]; *vptr++ = cb2->r[0];
|
|
*vptr++ = cb2->b[1]; *vptr++ = cb2->g[1]; *vptr++ = cb2->r[1];
|
|
*vptr++ = cb3->b[0]; *vptr++ = cb3->g[0]; *vptr++ = cb3->r[0];
|
|
*vptr++ = cb3->b[1]; *vptr++ = cb3->g[1]; *vptr++ = cb3->r[1];
|
|
vptr += row_inc; if(vptr > end) return;
|
|
*vptr++ = cb2->b[2]; *vptr++ = cb2->g[2]; *vptr++ = cb2->r[2];
|
|
*vptr++ = cb2->b[3]; *vptr++ = cb2->g[3]; *vptr++ = cb2->r[3];
|
|
*vptr++ = cb3->b[2]; *vptr++ = cb3->g[2]; *vptr++ = cb3->r[2];
|
|
*vptr++ = cb3->b[3]; *vptr++ = cb3->g[3]; *vptr++ = cb3->r[3];
|
|
}
|
|
|
|
|
|
/* ------------------------------------------------------------------------
|
|
* Call this function once at the start of the sequence and save the
|
|
* returned context for calls to decode_cinepak().
|
|
*/
|
|
void *decode_cinepak_init(void)
|
|
{
|
|
cinepak_info *cvinfo;
|
|
int i, x;
|
|
|
|
if((cvinfo = calloc(sizeof(cinepak_info), 1)) == NULL) return NULL;
|
|
cvinfo->strip_num = 0;
|
|
|
|
if(uiclp == NULL)
|
|
{
|
|
uiclp = uiclip+512;
|
|
for(i = -512; i < 512; i++)
|
|
uiclp[i] = (i < 0 ? 0 : (i > 255 ? 255 : i));
|
|
}
|
|
|
|
for(i = 0, x = -128; i < 256; i++, x++)
|
|
{
|
|
CU_Y_tab[i] = (-FIX(0.0655)) * x;
|
|
CV_Y_tab[i] = (FIX(0.0110)) * x + ONE_HALF;
|
|
CU_Cb_tab[i] = (FIX(1.1656)) * x;
|
|
CV_Cb_tab[i] = (-FIX(0.0062)) * x + ONE_HALF + FIX(128);
|
|
CU_Cr_tab[i] = (FIX(0.0467)) * x;
|
|
CV_Cr_tab[i] = (FIX(1.4187)) * x + ONE_HALF + FIX(128);
|
|
}
|
|
|
|
return (void *)cvinfo;
|
|
}
|
|
|
|
|
|
/* ------------------------------------------------------------------------
|
|
* This function decodes a buffer containing a Cinepak encoded frame.
|
|
*
|
|
* context - the context created by decode_cinepak_init().
|
|
* buf - the input buffer to be decoded
|
|
* size - the size of the input buffer
|
|
* frame - the output frame buffer
|
|
* width - the width of the output frame
|
|
* height - the height of the output frame
|
|
* bit_per_pixel - the number of bits per pixel allocated to the output
|
|
* frame; depths support:
|
|
* 32: BGR32
|
|
* 24: BGR24
|
|
* 16: YUYV
|
|
* 12: YV12
|
|
*/
|
|
void decode_cinepak(void *context, unsigned char *buf, int size, unsigned char *frame, unsigned int width, unsigned int height, int bit_per_pixel, int stride_)
|
|
{
|
|
cinepak_info *cvinfo = (cinepak_info *)context;
|
|
cvid_codebook *v4_codebook, *v1_codebook, *codebook = NULL;
|
|
unsigned long x, y, y_bottom, frame_flags, strips, cv_width, cv_height, cnum,
|
|
strip_id, chunk_id, x0, y0, x1, y1, ci, flag, mask;
|
|
long len, top_size, chunk_size;
|
|
unsigned char *frm_ptr, *frm_end;
|
|
unsigned int i, cur_strip, d0, d1, d2, d3, frm_stride, bpp = 3;
|
|
int modulo;
|
|
void (*read_codebook)(cvid_codebook *c, int mode) = read_codebook_24;
|
|
void (*cvid_v1)(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb) = cvid_v1_24;
|
|
void (*cvid_v4)(unsigned char *frm, unsigned char *end, int stride, cvid_codebook *cb0,
|
|
cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3) = cvid_v4_24;
|
|
|
|
x = y = 0;
|
|
y_bottom = 0;
|
|
in_buffer = buf;
|
|
|
|
frame_flags = get_byte();
|
|
len = get_byte() << 16;
|
|
len |= get_byte() << 8;
|
|
len |= get_byte();
|
|
|
|
switch(bit_per_pixel)
|
|
{
|
|
case 12: // YV12
|
|
bpp = 1; // for the purposes of stride
|
|
read_codebook = read_codebook_yv12;
|
|
cvid_v1 = cvid_v1_yv12;
|
|
cvid_v4 = cvid_v4_yv12;
|
|
yv12_y_plane = frame;
|
|
yv12_v_plane = frame + width * height;
|
|
yv12_u_plane = frame + (width * height) +
|
|
(width * height / 4);
|
|
break;
|
|
case 16: // YUYV
|
|
bpp = 2;
|
|
read_codebook = read_codebook_yuy2;
|
|
cvid_v1 = cvid_v1_yuy2;
|
|
cvid_v4 = cvid_v4_yuy2;
|
|
break;
|
|
case 24: // BGR24
|
|
bpp = 3;
|
|
read_codebook = read_codebook_24;
|
|
cvid_v1 = cvid_v1_24;
|
|
cvid_v4 = cvid_v4_24;
|
|
break;
|
|
case 32: // BGR32
|
|
bpp = 4;
|
|
read_codebook = read_codebook_32;
|
|
cvid_v1 = cvid_v1_32;
|
|
cvid_v4 = cvid_v4_32;
|
|
break;
|
|
}
|
|
|
|
frm_stride = stride_ ? stride_ : width * bpp;
|
|
frm_ptr = frame;
|
|
frm_end = frm_ptr + width * height * bpp;
|
|
|
|
if(len != size)
|
|
{
|
|
if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
|
|
if(len != size)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: corruption %d (QT/AVI) != %ld (CV)\n", size, len);
|
|
// return;
|
|
}
|
|
}
|
|
|
|
cv_width = get_word();
|
|
cv_height = get_word();
|
|
strips = get_word();
|
|
|
|
if(strips > cvinfo->strip_num)
|
|
{
|
|
if(strips >= MAX_STRIPS)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: strip overflow (more than %d)\n", MAX_STRIPS);
|
|
return;
|
|
}
|
|
|
|
for(i = cvinfo->strip_num; i < strips; i++)
|
|
{
|
|
if((cvinfo->v4_codebook[i] = (cvid_codebook *)calloc(sizeof(cvid_codebook), 260)) == NULL)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: codebook v4 alloc err\n");
|
|
return;
|
|
}
|
|
|
|
if((cvinfo->v1_codebook[i] = (cvid_codebook *)calloc(sizeof(cvid_codebook), 260)) == NULL)
|
|
{
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: codebook v1 alloc err\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
cvinfo->strip_num = strips;
|
|
|
|
#if DBUG
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: <%ld,%ld> strips %ld\n", cv_width, cv_height, strips);
|
|
#endif
|
|
|
|
for(cur_strip = 0; cur_strip < strips; cur_strip++)
|
|
{
|
|
v4_codebook = cvinfo->v4_codebook[cur_strip];
|
|
v1_codebook = cvinfo->v1_codebook[cur_strip];
|
|
|
|
if((cur_strip > 0) && (!(frame_flags & 0x01)))
|
|
{
|
|
memcpy(cvinfo->v4_codebook[cur_strip], cvinfo->v4_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
|
|
memcpy(cvinfo->v1_codebook[cur_strip], cvinfo->v1_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
|
|
}
|
|
|
|
strip_id = get_word(); /* 1000 = key strip, 1100 = iter strip */
|
|
top_size = get_word();
|
|
y0 = get_word(); /* FIXME: most of these are ignored at the moment */
|
|
x0 = get_word();
|
|
y1 = get_word();
|
|
x1 = get_word();
|
|
|
|
y_bottom += y1;
|
|
top_size -= 12;
|
|
x = 0;
|
|
if(x1 != width)
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: Warning x1 (%ld) != width (%d)\n", x1, width);
|
|
x1 = width;
|
|
#if DBUG
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, " %d) %04lx %04ld <%ld,%ld> <%ld,%ld> yt %ld %d\n",
|
|
cur_strip, strip_id, top_size, x0, y0, x1, y1, y_bottom);
|
|
#endif
|
|
|
|
while(top_size > 0)
|
|
{
|
|
chunk_id = get_word();
|
|
chunk_size = get_word();
|
|
|
|
#if DBUG
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, " %04lx %04ld\n", chunk_id, chunk_size);
|
|
#endif
|
|
top_size -= chunk_size;
|
|
chunk_size -= 4;
|
|
|
|
switch(chunk_id)
|
|
{
|
|
/* -------------------- Codebook Entries -------------------- */
|
|
case 0x2000:
|
|
case 0x2200:
|
|
modulo = chunk_size % 6;
|
|
codebook = (chunk_id == 0x2200 ? v1_codebook : v4_codebook);
|
|
cnum = (chunk_size - modulo) / 6;
|
|
for(i = 0; i < cnum; i++) read_codebook(codebook+i, 0);
|
|
while (modulo--)
|
|
in_buffer++;
|
|
break;
|
|
|
|
case 0x2400:
|
|
case 0x2600: /* 8 bit per pixel */
|
|
codebook = (chunk_id == 0x2600 ? v1_codebook : v4_codebook);
|
|
cnum = chunk_size/4;
|
|
for(i = 0; i < cnum; i++) read_codebook(codebook+i, 1);
|
|
break;
|
|
|
|
case 0x2100:
|
|
case 0x2300:
|
|
codebook = (chunk_id == 0x2300 ? v1_codebook : v4_codebook);
|
|
|
|
ci = 0;
|
|
while(chunk_size > 3)
|
|
{
|
|
flag = get_long();
|
|
chunk_size -= 4;
|
|
|
|
for(i = 0; i < 32; i++)
|
|
{
|
|
if(flag & 0x80000000)
|
|
{
|
|
chunk_size -= 6;
|
|
read_codebook(codebook+ci, 0);
|
|
}
|
|
|
|
ci++;
|
|
flag <<= 1;
|
|
}
|
|
}
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
|
|
case 0x2500:
|
|
case 0x2700: /* 8 bit per pixel */
|
|
codebook = (chunk_id == 0x2700 ? v1_codebook : v4_codebook);
|
|
|
|
ci = 0;
|
|
while(chunk_size > 0)
|
|
{
|
|
flag = get_long();
|
|
chunk_size -= 4;
|
|
|
|
for(i = 0; i < 32; i++)
|
|
{
|
|
if(flag & 0x80000000)
|
|
{
|
|
chunk_size -= 4;
|
|
read_codebook(codebook+ci, 1);
|
|
}
|
|
|
|
ci++;
|
|
flag <<= 1;
|
|
}
|
|
}
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
|
|
/* -------------------- Frame -------------------- */
|
|
case 0x3000:
|
|
while((chunk_size > 0) && (y < y_bottom))
|
|
{
|
|
flag = get_long();
|
|
chunk_size -= 4;
|
|
|
|
for(i = 0; i < 32; i++)
|
|
{
|
|
if(y >= y_bottom) break;
|
|
if(flag & 0x80000000) /* 4 bytes per block */
|
|
{
|
|
d0 = get_byte();
|
|
d1 = get_byte();
|
|
d2 = get_byte();
|
|
d3 = get_byte();
|
|
chunk_size -= 4;
|
|
cvid_v4(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
|
|
}
|
|
else /* 1 byte per block */
|
|
{
|
|
cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
|
|
chunk_size--;
|
|
}
|
|
|
|
x += 4;
|
|
if(x >= width)
|
|
{
|
|
x = 0;
|
|
y += 4;
|
|
}
|
|
flag <<= 1;
|
|
}
|
|
}
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
|
|
case 0x3100:
|
|
while((chunk_size > 0) && (y < y_bottom))
|
|
{
|
|
/* ---- flag bits: 0 = SKIP, 10 = V1, 11 = V4 ---- */
|
|
flag = (unsigned long)get_long();
|
|
chunk_size -= 4;
|
|
mask = 0x80000000;
|
|
|
|
while((mask) && (y < y_bottom))
|
|
{
|
|
if(flag & mask)
|
|
{
|
|
if(mask == 1)
|
|
{
|
|
if(chunk_size < 0) break;
|
|
flag = (unsigned long)get_long();
|
|
chunk_size -= 4;
|
|
mask = 0x80000000;
|
|
}
|
|
else mask >>= 1;
|
|
|
|
if(flag & mask) /* V4 */
|
|
{
|
|
d0 = get_byte();
|
|
d1 = get_byte();
|
|
d2 = get_byte();
|
|
d3 = get_byte();
|
|
chunk_size -= 4;
|
|
cvid_v4(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
|
|
}
|
|
else /* V1 */
|
|
{
|
|
chunk_size--;
|
|
cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
|
|
}
|
|
} /* else SKIP */
|
|
|
|
mask >>= 1;
|
|
x += 4;
|
|
if(x >= width)
|
|
{
|
|
x = 0;
|
|
y += 4;
|
|
}
|
|
}
|
|
}
|
|
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
|
|
case 0x3200: /* each byte is a V1 codebook */
|
|
while((chunk_size > 0) && (y < y_bottom))
|
|
{
|
|
cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
|
|
chunk_size--;
|
|
x += 4;
|
|
if(x >= width)
|
|
{
|
|
x = 0;
|
|
y += 4;
|
|
}
|
|
}
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
|
|
default:
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: unknown chunk_id %08lx\n", chunk_id);
|
|
while(chunk_size > 0) { skip_byte(); chunk_size--; }
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(len != size)
|
|
{
|
|
if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
|
|
if(len != size)
|
|
{
|
|
long xlen;
|
|
skip_byte();
|
|
xlen = get_byte() << 16;
|
|
xlen |= get_byte() << 8;
|
|
xlen |= get_byte(); /* Read Len */
|
|
mp_msg(MSGT_DECVIDEO, MSGL_WARN, "CVID: END INFO chunk size %d cvid size1 %ld cvid size2 %ld\n", size, len, xlen);
|
|
}
|
|
}
|
|
}
|
|
|