X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Findeo3.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavcodec%2Findeo3.c;h=d377eb9936b9ae2d4a262b795f93efedb02d668d;hb=299aecad571ca490ce017004a0d7e555d6df0520;hp=0000000000000000000000000000000000000000;hpb=42861dc634bef4059ca95e5292033315a0b9ce30;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/indeo3.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/indeo3.c new file mode 100644 index 0000000..d377eb9 --- /dev/null +++ b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavcodec/indeo3.c @@ -0,0 +1,1120 @@ +/* + * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg + * written, produced, and directed by Alan Smithee + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include + +#include "common.h" +#include "avcodec.h" +#include "dsputil.h" +#include "mpegvideo.h" + +#include "indeo3data.h" + +typedef struct +{ + unsigned char *Ybuf; + unsigned char *Ubuf; + unsigned char *Vbuf; + unsigned char *the_buf; + unsigned int the_buf_size; + unsigned short y_w, y_h; + unsigned short uv_w, uv_h; +} YUVBufs; + +typedef struct Indeo3DecodeContext { + AVCodecContext *avctx; + int width, height; + AVFrame frame; + + YUVBufs iv_frame[2]; + YUVBufs *cur_frame; + YUVBufs *ref_frame; + + unsigned char *ModPred; + unsigned short *corrector_type; +} Indeo3DecodeContext; + +static int corrector_type_0[24] = { + 195, 159, 133, 115, 101, 93, 87, 77, + 195, 159, 133, 115, 101, 93, 87, 77, + 128, 79, 79, 79, 79, 79, 79, 79 +}; + +static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 }; + +static void build_modpred(Indeo3DecodeContext *s) +{ + int i, j; + + s->ModPred = (unsigned char *) av_malloc (8 * 128); + + for (i=0; i < 128; ++i) { + s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2)); + s->ModPred[i+1*128] = (i == 7) ? 20 : ((i == 119 || i == 120) + ? 236 : 2*((i + 2) - ((i + 1) % 3))); + s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4)); + s->ModPred[i+3*128] = 2*((i + 1) - ((i - 3) % 5)); + s->ModPred[i+4*128] = (i == 8) ? 20 : 2*((i + 1) - ((i - 3) % 6)); + s->ModPred[i+5*128] = 2*((i + 4) - ((i + 3) % 7)); + s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8)); + s->ModPred[i+7*128] = 2*((i + 5) - ((i + 4) % 9)); + } + + s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short)); + + for (i=0; i < 24; ++i) { + for (j=0; j < 256; ++j) { + s->corrector_type[i*256+j] = (j < corrector_type_0[i]) + ? 1 : ((j < 248 || (i == 16 && j == 248)) + ? 0 : corrector_type_2[j - 248]); + } + } +} + +static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur, + unsigned char *ref, int width, int height, unsigned char *buf1, + long fflags2, unsigned char *hdr, + unsigned char *buf2, int min_width_160); + +#define min(a,b) ((a) < (b) ? (a) : (b)) + +/* ---------------------------------------------------------------------- */ +static void iv_alloc_frames(Indeo3DecodeContext *s) +{ + int luma_width, luma_height, luma_pixels, chroma_width, chroma_height, + chroma_pixels, bufsize, i; + + luma_width = (s->width + 3) & (~3); + luma_height = (s->height + 3) & (~3); + + s->iv_frame[0].y_w = s->iv_frame[0].y_h = + s->iv_frame[0].the_buf_size = 0; + s->iv_frame[1].y_w = s->iv_frame[1].y_h = + s->iv_frame[1].the_buf_size = 0; + s->iv_frame[1].the_buf = NULL; + + chroma_width = ((luma_width >> 2) + 3) & (~3); + chroma_height = ((luma_height>> 2) + 3) & (~3); + luma_pixels = luma_width * luma_height; + chroma_pixels = chroma_width * chroma_height; + + bufsize = luma_pixels * 2 + luma_width * 3 + + (chroma_pixels + chroma_width) * 4; + + if((s->iv_frame[0].the_buf = + (s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) : + av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL) + return; + s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width; + s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height; + s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width; + s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height; + s->iv_frame[0].the_buf_size = bufsize; + + s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width; + i = luma_pixels + luma_width * 2; + s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i; + i += (luma_pixels + luma_width); + s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i; + i += (chroma_pixels + chroma_width); + s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i; + i += (chroma_pixels + chroma_width); + s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i; + i += (chroma_pixels + chroma_width); + s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i; + + for(i = 1; i <= luma_width; i++) + s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] = + s->iv_frame[0].Ubuf[-i] = 0x80; + + for(i = 1; i <= chroma_width; i++) { + s->iv_frame[1].Ubuf[-i] = 0x80; + s->iv_frame[0].Vbuf[-i] = 0x80; + s->iv_frame[1].Vbuf[-i] = 0x80; + s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80; + } +} + +/* ---------------------------------------------------------------------- */ +static void iv_free_func(Indeo3DecodeContext *s) +{ + int i; + + for(i = 0 ; i < 2 ; i++) { + if(s->iv_frame[i].the_buf != NULL) + av_free(s->iv_frame[i].the_buf); + s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf = + s->iv_frame[i].Vbuf = NULL; + s->iv_frame[i].the_buf = NULL; + s->iv_frame[i].the_buf_size = 0; + s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0; + s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0; + } + + av_free(s->ModPred); + av_free(s->corrector_type); +} + +/* ---------------------------------------------------------------------- */ +static unsigned long iv_decode_frame(Indeo3DecodeContext *s, + unsigned char *buf, int buf_size) +{ + unsigned int hdr_width, hdr_height, + chroma_width, chroma_height; + unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs; + unsigned char *hdr_pos, *buf_pos; + + buf_pos = buf; + buf_pos += 18; + + fflags1 = le2me_16(*(uint16_t *)buf_pos); + buf_pos += 2; + fflags3 = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + fflags2 = *buf_pos++; + buf_pos += 3; + hdr_height = le2me_16(*(uint16_t *)buf_pos); + buf_pos += 2; + hdr_width = le2me_16(*(uint16_t *)buf_pos); + buf_pos += 2; + chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc; + chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc; + offs1 = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + offs2 = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + offs3 = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 8; + hdr_pos = buf_pos; + if(fflags3 == 0x80) return 4; + + if(fflags1 & 0x200) { + s->cur_frame = s->iv_frame + 1; + s->ref_frame = s->iv_frame; + } else { + s->cur_frame = s->iv_frame; + s->ref_frame = s->iv_frame + 1; + } + + buf_pos = buf + 16 + offs1; + offs = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + + iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width, + hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, + min(hdr_width, 160)); + + buf_pos = buf + 16 + offs2; + offs = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + + iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width, + chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, + min(chroma_width, 40)); + + buf_pos = buf + 16 + offs3; + offs = le2me_32(*(uint32_t *)buf_pos); + buf_pos += 4; + + iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width, + chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, + min(chroma_width, 40)); + + return 8; +} + +typedef struct { + long xpos; + long ypos; + long width; + long height; + long split_flag; + long split_direction; + long usl7; +} ustr_t; + +/* ---------------------------------------------------------------------- */ + +#define LV1_CHECK(buf1,rle_v3,lv1,lp2) \ + if((lv1 & 0x80) != 0) { \ + if(rle_v3 != 0) \ + rle_v3 = 0; \ + else { \ + rle_v3 = 1; \ + buf1 -= 2; \ + } \ + } \ + lp2 = 4; + + +#define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \ + if(rle_v3 == 0) { \ + rle_v2 = *buf1; \ + rle_v1 = 1; \ + if(rle_v2 > 32) { \ + rle_v2 -= 32; \ + rle_v1 = 0; \ + } \ + rle_v3 = 1; \ + } \ + buf1--; + + +#define LP2_CHECK(buf1,rle_v3,lp2) \ + if(lp2 == 0 && rle_v3 != 0) \ + rle_v3 = 0; \ + else { \ + buf1--; \ + rle_v3 = 1; \ + } + + +#define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \ + rle_v2--; \ + if(rle_v2 == 0) { \ + rle_v3 = 0; \ + buf1 += 2; \ + } \ + lp2 = 4; + +static void iv_Decode_Chunk(Indeo3DecodeContext *s, + unsigned char *cur, unsigned char *ref, int width, int height, + unsigned char *buf1, long fflags2, unsigned char *hdr, + unsigned char *buf2, int min_width_160) +{ + unsigned char bit_buf; + unsigned long bit_pos, lv, lv1, lv2; + long *width_tbl, width_tbl_arr[10]; + char *ref_vectors; + unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2; + uint32_t *cur_lp, *ref_lp; + const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2]; + unsigned short *correction_type_sp[2]; + ustr_t strip_tbl[20], *strip; + int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width, + rle_v1, rle_v2, rle_v3; + + bit_buf = 0; + ref_vectors = NULL; + + width_tbl = width_tbl_arr + 1; + i = (width < 0 ? width + 3 : width)/4; + for(j = -1; j < 8; j++) + width_tbl[j] = i * j; + + strip = strip_tbl; + + for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160); + + strip->ypos = strip->xpos = 0; + for(strip->width = min_width_160; width > strip->width; strip->width *= 2); + strip->height = height; + strip->split_direction = 0; + strip->split_flag = 0; + strip->usl7 = 0; + + bit_pos = 0; + + rle_v1 = rle_v2 = rle_v3 = 0; + + while(strip >= strip_tbl) { + if(bit_pos <= 0) { + bit_pos = 8; + bit_buf = *buf1++; + } + + bit_pos -= 2; + cmd = (bit_buf >> bit_pos) & 0x03; + + if(cmd == 0) { + strip++; + memcpy(strip, strip-1, sizeof(ustr_t)); + strip->split_flag = 1; + strip->split_direction = 0; + strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4); + continue; + } else if(cmd == 1) { + strip++; + memcpy(strip, strip-1, sizeof(ustr_t)); + strip->split_flag = 1; + strip->split_direction = 1; + strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4); + continue; + } else if(cmd == 2) { + if(strip->usl7 == 0) { + strip->usl7 = 1; + ref_vectors = NULL; + continue; + } + } else if(cmd == 3) { + if(strip->usl7 == 0) { + strip->usl7 = 1; + ref_vectors = buf2 + (*buf1 * 2); + buf1++; + continue; + } + } + + cur_frm_pos = cur + width * strip->ypos + strip->xpos; + + if((blks_width = strip->width) < 0) + blks_width += 3; + blks_width >>= 2; + blks_height = strip->height; + + if(ref_vectors != NULL) { + ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width + + ref_vectors[1] + strip->xpos; + } else + ref_frm_pos = cur_frm_pos - width_tbl[4]; + + if(cmd == 2) { + if(bit_pos <= 0) { + bit_pos = 8; + bit_buf = *buf1++; + } + + bit_pos -= 2; + cmd = (bit_buf >> bit_pos) & 0x03; + + if(cmd == 0 || ref_vectors != NULL) { + for(lp1 = 0; lp1 < blks_width; lp1++) { + for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1]) + ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j]; + cur_frm_pos += 4; + ref_frm_pos += 4; + } + } else if(cmd != 1) + return; + } else { + k = *buf1 >> 4; + j = *buf1 & 0x0f; + buf1++; + lv = j + fflags2; + + if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) { + cp2 = s->ModPred + ((lv - 8) << 7); + cp = ref_frm_pos; + for(i = 0; i < blks_width << 2; i++) { + int v = *cp >> 1; + *(cp++) = cp2[v]; + } + } + + if(k == 1 || k == 4) { + lv = (hdr[j] & 0xf) + fflags2; + correction_type_sp[0] = s->corrector_type + (lv << 8); + correction_lp[0] = correction + (lv << 8); + lv = (hdr[j] >> 4) + fflags2; + correction_lp[1] = correction + (lv << 8); + correction_type_sp[1] = s->corrector_type + (lv << 8); + } else { + correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8); + correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8); + correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8); + correction_lp[0] = correction_lp[1] = correction + (lv << 8); + } + + switch(k) { + case 1: + case 0: /********** CASE 0 **********/ + for( ; blks_height > 0; blks_height -= 4) { + for(lp1 = 0; lp1 < blks_width; lp1++) { + for(lp2 = 0; lp2 < 4; ) { + k = *buf1++; + cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2]; + ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2]; + + switch(correction_type_sp[0][k]) { + case 0: + *cur_lp = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + lp2++; + break; + case 1: + ((unsigned short *)cur_lp)[0] = ((((unsigned short *)(ref_lp))[0] >> 1) + + correction_lp[lp2 & 0x01][*buf1++]) << 1; + ((unsigned short *)cur_lp)[1] = ((((unsigned short *)(ref_lp))[1] >> 1) + + correction_lp[lp2 & 0x01][k]) << 1; + lp2++; + break; + case 2: + if(lp2 == 0) { + for(i = 0, j = 0; i < 2; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 += 2; + } + break; + case 3: + if(lp2 < 2) { + for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 = 3; + } + break; + case 8: + if(lp2 == 0) { + RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) + + if(rle_v1 == 1 || ref_vectors != NULL) { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + } + + RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) + break; + } else { + rle_v1 = 1; + rle_v2 = *buf1 - 1; + } + case 5: + LP2_CHECK(buf1,rle_v3,lp2) + case 4: + for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 = 4; + break; + + case 7: + if(rle_v3 != 0) + rle_v3 = 0; + else { + buf1--; + rle_v3 = 1; + } + case 6: + if(ref_vectors != NULL) { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + } + lp2 = 4; + break; + + case 9: + lv1 = *buf1++; + lv = (lv1 & 0x7F) << 1; + lv += (lv << 8); + lv += (lv << 16); + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = lv; + + LV1_CHECK(buf1,rle_v3,lv1,lp2) + break; + default: + return; + } + } + + cur_frm_pos += 4; + ref_frm_pos += 4; + } + + cur_frm_pos += ((width - blks_width) * 4); + ref_frm_pos += ((width - blks_width) * 4); + } + break; + + case 4: + case 3: /********** CASE 3 **********/ + if(ref_vectors != NULL) + return; + flag1 = 1; + + for( ; blks_height > 0; blks_height -= 8) { + for(lp1 = 0; lp1 < blks_width; lp1++) { + for(lp2 = 0; lp2 < 4; ) { + k = *buf1++; + + cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2]; + ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1]; + + switch(correction_type_sp[lp2 & 0x01][k]) { + case 0: + cur_lp[width_tbl[1]] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + if(lp2 > 0 || flag1 == 0 || strip->ypos != 0) + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + else + cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + lp2++; + break; + + case 1: + ((unsigned short *)cur_lp)[width_tbl[2]] = + ((((unsigned short *)ref_lp)[0] >> 1) + correction_lp[lp2 & 0x01][*buf1++]) << 1; + ((unsigned short *)cur_lp)[width_tbl[2]+1] = + ((((unsigned short *)ref_lp)[1] >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + if(lp2 > 0 || flag1 == 0 || strip->ypos != 0) + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + else + cur_lp[0] = cur_lp[width_tbl[1]]; + lp2++; + break; + + case 2: + if(lp2 == 0) { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = *ref_lp; + lp2 += 2; + } + break; + + case 3: + if(lp2 < 2) { + for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) + cur_lp[j] = *ref_lp; + lp2 = 3; + } + break; + + case 6: + lp2 = 4; + break; + + case 7: + if(rle_v3 != 0) + rle_v3 = 0; + else { + buf1--; + rle_v3 = 1; + } + lp2 = 4; + break; + + case 8: + if(lp2 == 0) { + RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) + + if(rle_v1 == 1) { + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + } + + RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) + break; + } else { + rle_v2 = (*buf1) - 1; + rle_v1 = 1; + } + case 5: + LP2_CHECK(buf1,rle_v3,lp2) + case 4: + for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) + cur_lp[j] = *ref_lp; + lp2 = 4; + break; + + case 9: + fprintf(stderr, "UNTESTED.\n"); + lv1 = *buf1++; + lv = (lv1 & 0x7F) << 1; + lv += (lv << 8); + lv += (lv << 16); + + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = lv; + + LV1_CHECK(buf1,rle_v3,lv1,lp2) + break; + + default: + return; + } + } + + cur_frm_pos += 4; + } + + cur_frm_pos += (((width * 2) - blks_width) * 4); + flag1 = 0; + } + break; + + case 10: /********** CASE 10 **********/ + if(ref_vectors == NULL) { + flag1 = 1; + + for( ; blks_height > 0; blks_height -= 8) { + for(lp1 = 0; lp1 < blks_width; lp1 += 2) { + for(lp2 = 0; lp2 < 4; ) { + k = *buf1++; + cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2]; + ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1]; + lv1 = ref_lp[0]; + lv2 = ref_lp[1]; + if(lp2 == 0 && flag1 != 0) { + lv1 = lv1 & 0x00FF00FF; + lv1 = (lv1 << 8) | lv1; + lv2 = lv2 & 0x00FF00FF; + lv2 = (lv2 << 8) | lv2; + } + + switch(correction_type_sp[lp2 & 0x01][k]) { + case 0: + cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1; + cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1; + if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) { + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + cur_lp[0] = cur_lp[width_tbl[1]]; + cur_lp[1] = cur_lp[width_tbl[1]+1]; + } + lp2++; + break; + + case 1: + cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1++]) << 1; + cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1; + if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) { + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + cur_lp[0] = cur_lp[width_tbl[1]]; + cur_lp[1] = cur_lp[width_tbl[1]+1]; + } + lp2++; + break; + + case 2: + if(lp2 == 0) { + if(flag1 != 0) { + for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + } + lp2 += 2; + } + break; + + case 3: + if(lp2 < 2) { + if(lp2 == 0 && flag1 != 0) { + for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + } + lp2 = 3; + } + break; + + case 8: + if(lp2 == 0) { + RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) + if(rle_v1 == 1) { + if(flag1 != 0) { + for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + } + } + RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) + break; + } else { + rle_v1 = 1; + rle_v2 = (*buf1) - 1; + } + case 5: + LP2_CHECK(buf1,rle_v3,lp2) + case 4: + if(lp2 == 0 && flag1 != 0) { + for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE; + cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE; + } else { + for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) { + cur_lp[j] = lv1; + cur_lp[j+1] = lv2; + } + } + lp2 = 4; + break; + + case 6: + lp2 = 4; + break; + + case 7: + if(lp2 == 0) { + if(rle_v3 != 0) + rle_v3 = 0; + else { + buf1--; + rle_v3 = 1; + } + lp2 = 4; + } + break; + + case 9: + fprintf(stderr, "UNTESTED.\n"); + lv1 = *buf1; + lv = (lv1 & 0x7F) << 1; + lv += (lv << 8); + lv += (lv << 16); + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) + cur_lp[j] = lv; + LV1_CHECK(buf1,rle_v3,lv1,lp2) + break; + + default: + return; + } + } + + cur_frm_pos += 8; + } + + cur_frm_pos += (((width * 2) - blks_width) * 4); + flag1 = 0; + } + } else { + for( ; blks_height > 0; blks_height -= 8) { + for(lp1 = 0; lp1 < blks_width; lp1 += 2) { + for(lp2 = 0; lp2 < 4; ) { + k = *buf1++; + cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2]; + ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2]; + + switch(correction_type_sp[lp2 & 0x01][k]) { + case 0: + lv1 = correctionloworder_lp[lp2 & 0x01][k]; + lv2 = correctionhighorder_lp[lp2 & 0x01][k]; + cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1; + cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1; + cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1; + cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1; + lp2++; + break; + + case 1: + lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++]; + lv2 = correctionloworder_lp[lp2 & 0x01][k]; + cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1; + cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1; + cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1; + cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1; + lp2++; + break; + + case 2: + if(lp2 == 0) { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) { + cur_lp[j] = ref_lp[j]; + cur_lp[j+1] = ref_lp[j+1]; + } + lp2 += 2; + } + break; + + case 3: + if(lp2 < 2) { + for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) { + cur_lp[j] = ref_lp[j]; + cur_lp[j+1] = ref_lp[j+1]; + } + lp2 = 3; + } + break; + + case 8: + if(lp2 == 0) { + RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) { + ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j]; + ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1]; + } + RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) + break; + } else { + rle_v1 = 1; + rle_v2 = (*buf1) - 1; + } + case 5: + case 7: + LP2_CHECK(buf1,rle_v3,lp2) + case 6: + case 4: + for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) { + cur_lp[j] = ref_lp[j]; + cur_lp[j+1] = ref_lp[j+1]; + } + lp2 = 4; + break; + + case 9: + fprintf(stderr, "UNTESTED.\n"); + lv1 = *buf1; + lv = (lv1 & 0x7F) << 1; + lv += (lv << 8); + lv += (lv << 16); + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) + ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv; + LV1_CHECK(buf1,rle_v3,lv1,lp2) + break; + + default: + return; + } + } + + cur_frm_pos += 8; + ref_frm_pos += 8; + } + + cur_frm_pos += (((width * 2) - blks_width) * 4); + ref_frm_pos += (((width * 2) - blks_width) * 4); + } + } + break; + + case 11: /********** CASE 11 **********/ + if(ref_vectors == NULL) + return; + + for( ; blks_height > 0; blks_height -= 8) { + for(lp1 = 0; lp1 < blks_width; lp1++) { + for(lp2 = 0; lp2 < 4; ) { + k = *buf1++; + cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2]; + ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2]; + + switch(correction_type_sp[lp2 & 0x01][k]) { + case 0: + cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + correction_lp[lp2 & 0x01][k]) << 1; + lp2++; + break; + + case 1: + lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]); + lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]); + ((unsigned short *)cur_lp)[0] = ((((unsigned short *)ref_lp)[0] >> 1) + lv1) << 1; + ((unsigned short *)cur_lp)[1] = ((((unsigned short *)ref_lp)[1] >> 1) + lv2) << 1; + ((unsigned short *)cur_lp)[width_tbl[2]] = ((((unsigned short *)ref_lp)[width_tbl[2]] >> 1) + lv1) << 1; + ((unsigned short *)cur_lp)[width_tbl[2]+1] = ((((unsigned short *)ref_lp)[width_tbl[2]+1] >> 1) + lv2) << 1; + lp2++; + break; + + case 2: + if(lp2 == 0) { + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 += 2; + } + break; + + case 3: + if(lp2 < 2) { + for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 = 3; + } + break; + + case 8: + if(lp2 == 0) { + RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) + + for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + + RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) + break; + } else { + rle_v1 = 1; + rle_v2 = (*buf1) - 1; + } + case 5: + case 7: + LP2_CHECK(buf1,rle_v3,lp2) + case 4: + case 6: + for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) + cur_lp[j] = ref_lp[j]; + lp2 = 4; + break; + + case 9: + fprintf(stderr, "UNTESTED.\n"); + lv1 = *buf1++; + lv = (lv1 & 0x7F) << 1; + lv += (lv << 8); + lv += (lv << 16); + for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) + cur_lp[j] = lv; + LV1_CHECK(buf1,rle_v3,lv1,lp2) + break; + + default: + return; + } + } + + cur_frm_pos += 4; + ref_frm_pos += 4; + } + + cur_frm_pos += (((width * 2) - blks_width) * 4); + ref_frm_pos += (((width * 2) - blks_width) * 4); + } + break; + + default: + return; + } + } + + if(strip < strip_tbl) + return; + + for( ; strip >= strip_tbl; strip--) { + if(strip->split_flag != 0) { + strip->split_flag = 0; + strip->usl7 = (strip-1)->usl7; + + if(strip->split_direction) { + strip->xpos += strip->width; + strip->width = (strip-1)->width - strip->width; + if(region_160_width <= strip->xpos && width < strip->width + strip->xpos) + strip->width = width - strip->xpos; + } else { + strip->ypos += strip->height; + strip->height = (strip-1)->height - strip->height; + } + break; + } + } + } +} + +static int indeo3_decode_init(AVCodecContext *avctx) +{ + Indeo3DecodeContext *s = avctx->priv_data; + + s->avctx = avctx; + s->width = avctx->width; + s->height = avctx->height; + avctx->pix_fmt = PIX_FMT_YUV410P; + avctx->has_b_frames = 0; + + build_modpred(s); + iv_alloc_frames(s); + + return 0; +} + +static int indeo3_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + unsigned char *buf, int buf_size) +{ + Indeo3DecodeContext *s=avctx->priv_data; + unsigned char *src, *dest; + int y; + + iv_decode_frame(s, buf, buf_size); + + if(s->frame.data[0]) + avctx->release_buffer(avctx, &s->frame); + + s->frame.reference = 0; + if(avctx->get_buffer(avctx, &s->frame) < 0) { + fprintf(stderr, "get_buffer() failed\n"); + return -1; + } + + src = s->cur_frame->Ybuf; + dest = s->frame.data[0]; + for (y = 0; y < s->height; y++) { + memcpy(dest, src, s->cur_frame->y_w); + src += s->cur_frame->y_w; + dest += s->frame.linesize[0]; + } + + src = s->cur_frame->Ubuf; + dest = s->frame.data[1]; + for (y = 0; y < s->height / 4; y++) { + memcpy(dest, src, s->cur_frame->uv_w); + src += s->cur_frame->uv_w; + dest += s->frame.linesize[1]; + } + + src = s->cur_frame->Vbuf; + dest = s->frame.data[2]; + for (y = 0; y < s->height / 4; y++) { + memcpy(dest, src, s->cur_frame->uv_w); + src += s->cur_frame->uv_w; + dest += s->frame.linesize[2]; + } + + *data_size=sizeof(AVFrame); + *(AVFrame*)data= s->frame; + + return buf_size; +} + +static int indeo3_decode_end(AVCodecContext *avctx) +{ + Indeo3DecodeContext *s = avctx->priv_data; + + iv_free_func(s); + + return 0; +} + +AVCodec indeo3_decoder = { + "indeo3", + CODEC_TYPE_VIDEO, + CODEC_ID_INDEO3, + sizeof(Indeo3DecodeContext), + indeo3_decode_init, + NULL, + indeo3_decode_end, + indeo3_decode_frame, + 0, + NULL +};