mirror of
https://git.ffmpeg.org/ffmpeg.git
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1115 lines
46 KiB
C
1115 lines
46 KiB
C
/*
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* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
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* written, produced, and directed by Alan Smithee
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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 <unistd.h>
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#include "avcodec.h"
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#include "dsputil.h"
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#include "bytestream.h"
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#include "indeo3data.h"
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typedef struct
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{
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uint8_t *Ybuf;
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uint8_t *Ubuf;
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uint8_t *Vbuf;
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unsigned short y_w, y_h;
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unsigned short uv_w, uv_h;
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} YUVBufs;
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typedef struct Indeo3DecodeContext {
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AVCodecContext *avctx;
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int width, height;
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AVFrame frame;
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uint8_t *buf;
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YUVBufs iv_frame[2];
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YUVBufs *cur_frame;
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YUVBufs *ref_frame;
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uint8_t *ModPred;
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uint8_t *corrector_type;
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} Indeo3DecodeContext;
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static const uint8_t corrector_type_0[24] = {
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195, 159, 133, 115, 101, 93, 87, 77,
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195, 159, 133, 115, 101, 93, 87, 77,
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128, 79, 79, 79, 79, 79, 79, 79
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};
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static const uint8_t corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
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static av_cold int build_modpred(Indeo3DecodeContext *s)
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{
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int i, j;
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if (!(s->ModPred = av_malloc(8 * 128)))
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return AVERROR(ENOMEM);
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for (i=0; i < 128; ++i) {
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s->ModPred[i+0*128] = i > 126 ? 254 : 2*(i + 1 - ((i + 1) % 2));
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s->ModPred[i+1*128] = i == 7 ? 20 :
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i == 119 ||
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i == 120 ? 236 : 2*(i + 2 - ((i + 1) % 3));
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s->ModPred[i+2*128] = i > 125 ? 248 : 2*(i + 2 - ((i + 2) % 4));
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s->ModPred[i+3*128] = 2*(i + 1 - ((i - 3) % 5));
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s->ModPred[i+4*128] = i == 8 ? 20 : 2*(i + 1 - ((i - 3) % 6));
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s->ModPred[i+5*128] = 2*(i + 4 - ((i + 3) % 7));
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s->ModPred[i+6*128] = i > 123 ? 240 : 2*(i + 4 - ((i + 4) % 8));
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s->ModPred[i+7*128] = 2*(i + 5 - ((i + 4) % 9));
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}
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if (!(s->corrector_type = av_malloc(24 * 256)))
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return AVERROR(ENOMEM);
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for (i=0; i < 24; ++i) {
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for (j=0; j < 256; ++j) {
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s->corrector_type[i*256+j] = j < corrector_type_0[i] ? 1 :
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j < 248 || (i == 16 && j == 248) ? 0 :
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corrector_type_2[j - 248];
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}
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}
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return 0;
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}
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static av_cold int iv_alloc_frames(Indeo3DecodeContext *s)
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{
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int luma_width = (s->width + 3) & ~3,
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luma_height = (s->height + 3) & ~3,
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chroma_width = ((luma_width >> 2) + 3) & ~3,
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chroma_height = ((luma_height >> 2) + 3) & ~3,
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luma_pixels = luma_width * luma_height,
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chroma_pixels = chroma_width * chroma_height,
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i;
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unsigned int bufsize = luma_pixels * 2 + luma_width * 3 +
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(chroma_pixels + chroma_width) * 4;
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if(!(s->buf = av_malloc(bufsize)))
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return AVERROR(ENOMEM);
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s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
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s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
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s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
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s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
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s->iv_frame[0].Ybuf = s->buf + luma_width;
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i = luma_pixels + luma_width * 2;
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s->iv_frame[1].Ybuf = s->buf + i;
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i += (luma_pixels + luma_width);
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s->iv_frame[0].Ubuf = s->buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[1].Ubuf = s->buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[0].Vbuf = s->buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[1].Vbuf = s->buf + i;
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for(i = 1; i <= luma_width; i++)
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s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
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s->iv_frame[0].Ubuf[-i] = 0x80;
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for(i = 1; i <= chroma_width; i++) {
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s->iv_frame[1].Ubuf[-i] = 0x80;
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s->iv_frame[0].Vbuf[-i] = 0x80;
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s->iv_frame[1].Vbuf[-i] = 0x80;
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s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
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}
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return 0;
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}
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static av_cold void iv_free_func(Indeo3DecodeContext *s)
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{
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av_free(s->buf);
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av_free(s->ModPred);
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av_free(s->corrector_type);
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}
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typedef struct {
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long xpos;
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long ypos;
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long width;
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long height;
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long split_flag;
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long split_direction;
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long usl7;
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} ustr_t;
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#define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
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if((lv1 & 0x80) != 0) { \
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if(rle_v3 != 0) \
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rle_v3 = 0; \
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else { \
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rle_v3 = 1; \
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buf1 -= 2; \
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} \
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} \
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lp2 = 4;
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#define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
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if(rle_v3 == 0) { \
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rle_v2 = *buf1; \
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rle_v1 = 1; \
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if(rle_v2 > 32) { \
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rle_v2 -= 32; \
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rle_v1 = 0; \
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} \
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rle_v3 = 1; \
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} \
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buf1--;
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#define LP2_CHECK(buf1,rle_v3,lp2) \
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if(lp2 == 0 && rle_v3 != 0) \
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rle_v3 = 0; \
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else { \
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buf1--; \
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rle_v3 = 1; \
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}
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#define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
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rle_v2--; \
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if(rle_v2 == 0) { \
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rle_v3 = 0; \
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buf1 += 2; \
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} \
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lp2 = 4;
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static void iv_Decode_Chunk(Indeo3DecodeContext *s,
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uint8_t *cur, uint8_t *ref, int width, int height,
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const uint8_t *buf1, long cb_offset, const uint8_t *hdr,
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const uint8_t *buf2, int min_width_160)
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{
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uint8_t bit_buf;
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unsigned long bit_pos, lv, lv1, lv2;
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long *width_tbl, width_tbl_arr[10];
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const signed char *ref_vectors;
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uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
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uint32_t *cur_lp, *ref_lp;
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const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
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uint8_t *correction_type_sp[2];
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ustr_t strip_tbl[20], *strip;
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int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
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rle_v1, rle_v2, rle_v3;
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unsigned short res;
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bit_buf = 0;
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ref_vectors = NULL;
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width_tbl = width_tbl_arr + 1;
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i = (width < 0 ? width + 3 : width)/4;
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for(j = -1; j < 8; j++)
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width_tbl[j] = i * j;
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strip = strip_tbl;
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for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
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strip->ypos = strip->xpos = 0;
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for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
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strip->height = height;
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strip->split_direction = 0;
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strip->split_flag = 0;
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strip->usl7 = 0;
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bit_pos = 0;
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rle_v1 = rle_v2 = rle_v3 = 0;
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while(strip >= strip_tbl) {
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if(bit_pos <= 0) {
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bit_pos = 8;
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bit_buf = *buf1++;
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}
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bit_pos -= 2;
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cmd = (bit_buf >> bit_pos) & 0x03;
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if(cmd == 0) {
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strip++;
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memcpy(strip, strip-1, sizeof(ustr_t));
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strip->split_flag = 1;
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strip->split_direction = 0;
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strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
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continue;
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} else if(cmd == 1) {
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strip++;
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memcpy(strip, strip-1, sizeof(ustr_t));
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strip->split_flag = 1;
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strip->split_direction = 1;
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strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
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continue;
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} else if(cmd == 2) {
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if(strip->usl7 == 0) {
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strip->usl7 = 1;
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ref_vectors = NULL;
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continue;
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}
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} else if(cmd == 3) {
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if(strip->usl7 == 0) {
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strip->usl7 = 1;
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ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
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buf1++;
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continue;
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}
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}
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cur_frm_pos = cur + width * strip->ypos + strip->xpos;
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if((blks_width = strip->width) < 0)
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blks_width += 3;
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blks_width >>= 2;
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blks_height = strip->height;
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if(ref_vectors != NULL) {
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ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
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ref_vectors[1] + strip->xpos;
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} else
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ref_frm_pos = cur_frm_pos - width_tbl[4];
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if(cmd == 2) {
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if(bit_pos <= 0) {
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bit_pos = 8;
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bit_buf = *buf1++;
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}
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bit_pos -= 2;
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cmd = (bit_buf >> bit_pos) & 0x03;
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if(cmd == 0 || ref_vectors != NULL) {
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for(lp1 = 0; lp1 < blks_width; lp1++) {
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for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
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((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
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cur_frm_pos += 4;
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ref_frm_pos += 4;
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}
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} else if(cmd != 1)
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return;
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} else {
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k = *buf1 >> 4;
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j = *buf1 & 0x0f;
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buf1++;
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lv = j + cb_offset;
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if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
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cp2 = s->ModPred + ((lv - 8) << 7);
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cp = ref_frm_pos;
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for(i = 0; i < blks_width << 2; i++) {
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int v = *cp >> 1;
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*(cp++) = cp2[v];
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}
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}
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if(k == 1 || k == 4) {
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lv = (hdr[j] & 0xf) + cb_offset;
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correction_type_sp[0] = s->corrector_type + (lv << 8);
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correction_lp[0] = correction + (lv << 8);
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lv = (hdr[j] >> 4) + cb_offset;
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correction_lp[1] = correction + (lv << 8);
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correction_type_sp[1] = s->corrector_type + (lv << 8);
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} else {
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correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
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correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
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correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
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correction_lp[0] = correction_lp[1] = correction + (lv << 8);
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}
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switch(k) {
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case 1:
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case 0: /********** CASE 0 **********/
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for( ; blks_height > 0; blks_height -= 4) {
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for(lp1 = 0; lp1 < blks_width; lp1++) {
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for(lp2 = 0; lp2 < 4; ) {
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k = *buf1++;
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cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
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ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
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switch(correction_type_sp[0][k]) {
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case 0:
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*cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
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lp2++;
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break;
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case 1:
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res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
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((unsigned short *)cur_lp)[0] = le2me_16(res);
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res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
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((unsigned short *)cur_lp)[1] = le2me_16(res);
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buf1++;
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lp2++;
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break;
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case 2:
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if(lp2 == 0) {
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for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
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cur_lp[j] = ref_lp[j];
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lp2 += 2;
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}
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break;
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case 3:
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if(lp2 < 2) {
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for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
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cur_lp[j] = ref_lp[j];
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lp2 = 3;
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}
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break;
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case 8:
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if(lp2 == 0) {
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RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
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if(rle_v1 == 1 || ref_vectors != NULL) {
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for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
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cur_lp[j] = ref_lp[j];
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}
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RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
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break;
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} else {
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rle_v1 = 1;
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rle_v2 = *buf1 - 1;
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}
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case 5:
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LP2_CHECK(buf1,rle_v3,lp2)
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case 4:
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for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
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cur_lp[j] = ref_lp[j];
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lp2 = 4;
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break;
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case 7:
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if(rle_v3 != 0)
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rle_v3 = 0;
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else {
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buf1--;
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rle_v3 = 1;
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}
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case 6:
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if(ref_vectors != NULL) {
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for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
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cur_lp[j] = ref_lp[j];
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}
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lp2 = 4;
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break;
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case 9:
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lv1 = *buf1++;
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lv = (lv1 & 0x7F) << 1;
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lv += (lv << 8);
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lv += (lv << 16);
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for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
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cur_lp[j] = lv;
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LV1_CHECK(buf1,rle_v3,lv1,lp2)
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break;
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default:
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return;
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}
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}
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cur_frm_pos += 4;
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ref_frm_pos += 4;
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}
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cur_frm_pos += ((width - blks_width) * 4);
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ref_frm_pos += ((width - blks_width) * 4);
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}
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break;
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case 4:
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case 3: /********** CASE 3 **********/
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if(ref_vectors != NULL)
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return;
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flag1 = 1;
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for( ; blks_height > 0; blks_height -= 8) {
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for(lp1 = 0; lp1 < blks_width; lp1++) {
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for(lp2 = 0; lp2 < 4; ) {
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k = *buf1++;
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cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
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ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
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switch(correction_type_sp[lp2 & 0x01][k]) {
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case 0:
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cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
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if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
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cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
|
|
else
|
|
cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
|
|
lp2++;
|
|
break;
|
|
|
|
case 1:
|
|
res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
|
|
((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
|
|
res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
|
|
((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
|
|
|
|
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]];
|
|
buf1++;
|
|
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:
|
|
av_log(s->avctx, AV_LOG_ERROR, "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) {
|
|
#ifdef WORDS_BIGENDIAN
|
|
lv1 = lv1 & 0xFF00FF00;
|
|
lv1 = (lv1 >> 8) | lv1;
|
|
lv2 = lv2 & 0xFF00FF00;
|
|
lv2 = (lv2 >> 8) | lv2;
|
|
#else
|
|
lv1 = lv1 & 0x00FF00FF;
|
|
lv1 = (lv1 << 8) | lv1;
|
|
lv2 = lv2 & 0x00FF00FF;
|
|
lv2 = (lv2 << 8) | lv2;
|
|
#endif
|
|
}
|
|
|
|
switch(correction_type_sp[lp2 & 0x01][k]) {
|
|
case 0:
|
|
cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
|
|
cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(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]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
|
|
cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(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];
|
|
}
|
|
buf1++;
|
|
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:
|
|
av_log(s->avctx, AV_LOG_ERROR, "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] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
|
|
cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
|
|
cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
|
|
cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(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] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
|
|
cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
|
|
cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
|
|
cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(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:
|
|
av_log(s->avctx, AV_LOG_ERROR, "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] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
|
|
cur_lp[width_tbl[1]] = le2me_32(((le2me_32(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]);
|
|
res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
|
|
((unsigned short *)cur_lp)[0] = le2me_16(res);
|
|
res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
|
|
((unsigned short *)cur_lp)[1] = le2me_16(res);
|
|
res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
|
|
((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
|
|
res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
|
|
((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
|
|
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:
|
|
av_log(s->avctx, AV_LOG_ERROR, "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 av_cold int indeo3_decode_init(AVCodecContext *avctx)
|
|
{
|
|
Indeo3DecodeContext *s = avctx->priv_data;
|
|
int ret = 0;
|
|
|
|
s->avctx = avctx;
|
|
s->width = avctx->width;
|
|
s->height = avctx->height;
|
|
avctx->pix_fmt = PIX_FMT_YUV410P;
|
|
|
|
if (!(ret = build_modpred(s)))
|
|
ret = iv_alloc_frames(s);
|
|
if (ret)
|
|
iv_free_func(s);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
|
|
const uint8_t *buf, int buf_size)
|
|
{
|
|
unsigned int image_width, image_height,
|
|
chroma_width, chroma_height;
|
|
unsigned long flags, cb_offset, data_size,
|
|
y_offset, v_offset, u_offset, mc_vector_count;
|
|
const uint8_t *hdr_pos, *buf_pos;
|
|
|
|
buf_pos = buf;
|
|
buf_pos += 18; /* skip OS header (16 bytes) and version number */
|
|
|
|
flags = bytestream_get_le16(&buf_pos);
|
|
data_size = bytestream_get_le32(&buf_pos);
|
|
cb_offset = *buf_pos++;
|
|
buf_pos += 3; /* skip reserved byte and checksum */
|
|
image_height = bytestream_get_le16(&buf_pos);
|
|
image_width = bytestream_get_le16(&buf_pos);
|
|
|
|
if(avcodec_check_dimensions(NULL, image_width, image_height))
|
|
return -1;
|
|
|
|
chroma_height = ((image_height >> 2) + 3) & 0x7ffc;
|
|
chroma_width = ((image_width >> 2) + 3) & 0x7ffc;
|
|
y_offset = bytestream_get_le32(&buf_pos);
|
|
v_offset = bytestream_get_le32(&buf_pos);
|
|
u_offset = bytestream_get_le32(&buf_pos);
|
|
buf_pos += 4; /* reserved */
|
|
hdr_pos = buf_pos;
|
|
if(data_size == 0x80) return 4;
|
|
|
|
if(flags & 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 + y_offset;
|
|
mc_vector_count = bytestream_get_le32(&buf_pos);
|
|
|
|
iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, image_width,
|
|
image_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
|
|
FFMIN(image_width, 160));
|
|
|
|
if (!(s->avctx->flags & CODEC_FLAG_GRAY))
|
|
{
|
|
|
|
buf_pos = buf + 16 + v_offset;
|
|
mc_vector_count = bytestream_get_le32(&buf_pos);
|
|
|
|
iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
|
|
chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
|
|
FFMIN(chroma_width, 40));
|
|
|
|
buf_pos = buf + 16 + u_offset;
|
|
mc_vector_count = bytestream_get_le32(&buf_pos);
|
|
|
|
iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
|
|
chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
|
|
FFMIN(chroma_width, 40));
|
|
|
|
}
|
|
|
|
return 8;
|
|
}
|
|
|
|
static int indeo3_decode_frame(AVCodecContext *avctx,
|
|
void *data, int *data_size,
|
|
const uint8_t *buf, int buf_size)
|
|
{
|
|
Indeo3DecodeContext *s=avctx->priv_data;
|
|
uint8_t *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) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "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];
|
|
}
|
|
|
|
if (!(s->avctx->flags & CODEC_FLAG_GRAY))
|
|
{
|
|
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 av_cold 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,
|
|
.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),
|
|
};
|