+++ /dev/null
-/*
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#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
-};
projects / synfig.git / blobdiff