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https://github.com/FFmpeg/FFmpeg.git
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d4a4a6747d
ff_init_vlc_from_lengths() can be used to offload the computation of the codes; it also needn't check whether the codes are already properly ordered (they are). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2018 lines
71 KiB
C
2018 lines
71 KiB
C
/*
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* BitJazz SheerVideo decoder
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* Copyright (c) 2016 Paul B Mahol
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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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#define CACHED_BITSTREAM_READER !ARCH_X86_32
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#define SHEER_VLC_BITS 12
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "get_bits.h"
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#include "internal.h"
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#include "thread.h"
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#include "sheervideodata.h"
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typedef struct SheerVideoContext {
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unsigned format;
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int alt;
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VLC vlc[2];
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void (*decode_frame)(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb);
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} SheerVideoContext;
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static void decode_ca4i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v, *dst_a;
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int x, y;
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dst_a = (uint16_t *)p->data[3];
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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for (y = 0; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_a[x] = get_bits(gb, 10);
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 502 };
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for (x = 0; x < avctx->width; x++) {
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int y, u, v, a;
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a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_a[x] = pred[3] = (a + pred[3]) & 0x3ff;
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dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff;
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dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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dst_a += p->linesize[3] / 2;
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}
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}
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static void decode_ca4p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v, *dst_a;
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int x, y;
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dst_a = (uint16_t *)p->data[3];
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_a[x] = get_bits(gb, 10);
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 502 };
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for (x = 0; x < avctx->width; x++) {
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int y, u, v, a;
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a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_a[x] = pred[3] = (a + pred[3]) & 0x3ff;
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dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff;
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dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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dst_a += p->linesize[3] / 2;
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for (y = 1; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_a[x] = get_bits(gb, 10);
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred_TL[4], pred_L[4], pred_T[4];
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int y, u, v, a;
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pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0] / 2];
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pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1] / 2];
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pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2] / 2];
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pred_TL[3] = pred_L[3] = dst_a[-p->linesize[3] / 2];
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for (x = 0; x < avctx->width; x++) {
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pred_T[0] = dst_y[-p->linesize[0] / 2 + x];
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pred_T[1] = dst_u[-p->linesize[1] / 2 + x];
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pred_T[2] = dst_v[-p->linesize[2] / 2 + x];
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pred_T[3] = dst_a[-p->linesize[3] / 2 + x];
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a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_a[x] = pred_L[3] = (a + ((3 * (pred_T[3] + pred_L[3]) - 2 * pred_TL[3]) >> 2)) & 0x3ff;
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dst_y[x] = pred_L[0] = (y + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
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dst_u[x] = pred_L[1] = (u + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff;
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dst_v[x] = pred_L[2] = (v + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0x3ff;
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pred_TL[0] = pred_T[0];
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pred_TL[1] = pred_T[1];
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pred_TL[2] = pred_T[2];
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pred_TL[3] = pred_T[3];
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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dst_a += p->linesize[3] / 2;
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}
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}
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static void decode_ybr10i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v;
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int x, y;
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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for (y = 0; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 512 };
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for (x = 0; x < avctx->width; x++) {
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int y, u, v;
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff;
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dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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}
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}
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static void decode_ybr10(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v;
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int x, y;
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 512 };
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for (x = 0; x < avctx->width; x++) {
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int y, u, v;
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff;
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dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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for (y = 1; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x++) {
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dst_y[x] = get_bits(gb, 10);
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dst_u[x] = get_bits(gb, 10);
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dst_v[x] = get_bits(gb, 10);
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}
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} else {
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int pred_TL[4], pred_L[4], pred_T[4];
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int y, u, v;
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pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0] / 2];
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pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1] / 2];
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pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2] / 2];
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for (x = 0; x < avctx->width; x++) {
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pred_T[0] = dst_y[-p->linesize[0] / 2 + x];
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pred_T[1] = dst_u[-p->linesize[1] / 2 + x];
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pred_T[2] = dst_v[-p->linesize[2] / 2 + x];
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y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_y[x] = pred_L[0] = (y + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
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dst_u[x] = pred_L[1] = (u + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff;
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dst_v[x] = pred_L[2] = (v + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0x3ff;
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pred_TL[0] = pred_T[0];
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pred_TL[1] = pred_T[1];
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pred_TL[2] = pred_T[2];
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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}
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}
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static void decode_yry10i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v;
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int x, y;
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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for (y = 0; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x += 2) {
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dst_y[x ] = get_bits(gb, 10);
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dst_u[x / 2] = get_bits(gb, 10);
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dst_y[x + 1] = get_bits(gb, 10);
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dst_v[x / 2] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 0 };
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for (x = 0; x < avctx->width; x += 2) {
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int y1, y2, u, v;
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y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_y[x ] = pred[0] = (y1 + pred[0]) & 0x3ff;
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dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff;
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dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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}
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}
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static void decode_yry10(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
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{
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SheerVideoContext *s = avctx->priv_data;
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uint16_t *dst_y, *dst_u, *dst_v;
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int x, y;
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dst_y = (uint16_t *)p->data[0];
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dst_u = (uint16_t *)p->data[1];
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dst_v = (uint16_t *)p->data[2];
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x += 2) {
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dst_y[x ] = get_bits(gb, 10);
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dst_u[x / 2] = get_bits(gb, 10);
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dst_y[x + 1] = get_bits(gb, 10);
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dst_v[x / 2] = get_bits(gb, 10);
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}
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} else {
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int pred[4] = { 502, 512, 512, 0 };
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for (x = 0; x < avctx->width; x += 2) {
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int y1, y2, u, v;
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y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
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v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
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dst_y[x ] = pred[0] = (y1 + pred[0]) & 0x3ff;
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dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff;
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dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff;
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dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff;
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}
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}
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dst_y += p->linesize[0] / 2;
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dst_u += p->linesize[1] / 2;
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dst_v += p->linesize[2] / 2;
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for (y = 1; y < avctx->height; y++) {
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if (get_bits1(gb)) {
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for (x = 0; x < avctx->width; x += 2) {
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dst_y[x ] = get_bits(gb, 10);
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dst_u[x / 2] = get_bits(gb, 10);
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dst_y[x + 1] = get_bits(gb, 10);
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dst_v[x / 2] = get_bits(gb, 10);
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}
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} else {
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int pred_TL[6], pred_L[6], pred_T[6];
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int y1, y2, u, v;
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pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0] / 2];
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pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1] / 2];
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pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2] / 2];
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for (x = 0; x < avctx->width; x += 2) {
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pred_T[0] = dst_y[-p->linesize[0] / 2 + x];
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pred_T[3] = dst_y[-p->linesize[0] / 2 + x + 1];
|
|
pred_T[1] = dst_u[-p->linesize[1] / 2 + x / 2];
|
|
pred_T[2] = dst_v[-p->linesize[2] / 2 + x / 2];
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
|
|
dst_u[x / 2] = pred_L[1] = (u + (((pred_L[1] - pred_TL[1]) >> 1) + pred_T[1])) & 0x3ff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + ((3 * (pred_T[3] + pred_L[0]) - 2 * pred_T[0]) >> 2)) & 0x3ff;
|
|
dst_v[x / 2] = pred_L[2] = (v + (((pred_L[2] - pred_TL[2]) >> 1) + pred_T[2])) & 0x3ff;
|
|
|
|
pred_TL[0] = pred_T[3];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0] / 2;
|
|
dst_u += p->linesize[1] / 2;
|
|
dst_v += p->linesize[2] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_ca2i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_y, *dst_u, *dst_v, *dst_a;
|
|
int x, y;
|
|
|
|
dst_y = (uint16_t *)p->data[0];
|
|
dst_u = (uint16_t *)p->data[1];
|
|
dst_v = (uint16_t *)p->data[2];
|
|
dst_a = (uint16_t *)p->data[3];
|
|
|
|
for (y = 0; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 10);
|
|
dst_y[x ] = get_bits(gb, 10);
|
|
dst_u[x / 2] = get_bits(gb, 10);
|
|
dst_a[x + 1] = get_bits(gb, 10);
|
|
dst_y[x + 1] = get_bits(gb, 10);
|
|
dst_v[x / 2] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 502, 512, 512, 502 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0x3ff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff;
|
|
dst_a[x ] = pred[3] = (a1 + pred[3]) & 0x3ff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff;
|
|
dst_a[x + 1] = pred[3] = (a2 + pred[3]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0] / 2;
|
|
dst_u += p->linesize[1] / 2;
|
|
dst_v += p->linesize[2] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_ca2p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_y, *dst_u, *dst_v, *dst_a;
|
|
int x, y;
|
|
|
|
dst_y = (uint16_t *)p->data[0];
|
|
dst_u = (uint16_t *)p->data[1];
|
|
dst_v = (uint16_t *)p->data[2];
|
|
dst_a = (uint16_t *)p->data[3];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 10);
|
|
dst_y[x ] = get_bits(gb, 10);
|
|
dst_u[x / 2] = get_bits(gb, 10);
|
|
dst_a[x + 1] = get_bits(gb, 10);
|
|
dst_y[x + 1] = get_bits(gb, 10);
|
|
dst_v[x / 2] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 502, 512, 512, 502 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0x3ff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff;
|
|
dst_a[x ] = pred[3] = (a1 + pred[3]) & 0x3ff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff;
|
|
dst_a[x + 1] = pred[3] = (a2 + pred[3]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0] / 2;
|
|
dst_u += p->linesize[1] / 2;
|
|
dst_v += p->linesize[2] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 10);
|
|
dst_y[x ] = get_bits(gb, 10);
|
|
dst_u[x / 2] = get_bits(gb, 10);
|
|
dst_a[x + 1] = get_bits(gb, 10);
|
|
dst_y[x + 1] = get_bits(gb, 10);
|
|
dst_v[x / 2] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred_TL[6], pred_L[6], pred_T[6];
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0] / 2];
|
|
pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1] / 2];
|
|
pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2] / 2];
|
|
pred_TL[4] = pred_L[4] = dst_a[-p->linesize[3] / 2];
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
pred_T[0] = dst_y[-p->linesize[0] / 2 + x];
|
|
pred_T[3] = dst_y[-p->linesize[0] / 2 + x + 1];
|
|
pred_T[1] = dst_u[-p->linesize[1] / 2 + x / 2];
|
|
pred_T[2] = dst_v[-p->linesize[2] / 2 + x / 2];
|
|
pred_T[4] = dst_a[-p->linesize[3] / 2 + x];
|
|
pred_T[5] = dst_a[-p->linesize[3] / 2 + x + 1];
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
|
|
dst_u[x / 2] = pred_L[1] = (u + (((pred_L[1] - pred_TL[1]) >> 1) + pred_T[1])) & 0x3ff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + ((3 * (pred_T[3] + pred_L[0]) - 2 * pred_T[0]) >> 2)) & 0x3ff;
|
|
dst_v[x / 2] = pred_L[2] = (v + (((pred_L[2] - pred_TL[2]) >> 1) + pred_T[2])) & 0x3ff;
|
|
dst_a[x ] = pred_L[4] = (a1 + ((3 * (pred_T[4] + pred_L[4]) - 2 * pred_TL[4]) >> 2)) & 0x3ff;
|
|
dst_a[x + 1] = pred_L[4] = (a2 + ((3 * (pred_T[5] + pred_L[4]) - 2 * pred_T[4]) >> 2)) & 0x3ff;
|
|
|
|
pred_TL[0] = pred_T[3];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
pred_TL[4] = pred_T[5];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0] / 2;
|
|
dst_u += p->linesize[1] / 2;
|
|
dst_v += p->linesize[2] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_c82i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v, *dst_a;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
dst_a = p->data[3];
|
|
|
|
for (y = 0; y < avctx->height; y += 1) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 8);
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_a[x + 1] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, -128, -128, 125 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
|
|
dst_a[x ] = pred[3] = (a1 + pred[3]) & 0xff;
|
|
dst_a[x + 1] = pred[3] = (a2 + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
dst_a += p->linesize[3];
|
|
}
|
|
}
|
|
|
|
static void decode_c82p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v, *dst_a;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
dst_a = p->data[3];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 8);
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_a[x + 1] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, -128, -128, 125 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
|
|
dst_a[x ] = pred[3] = (a1 + pred[3]) & 0xff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
|
|
dst_a[x + 1] = pred[3] = (a2 + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
dst_a += p->linesize[3];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_a[x ] = get_bits(gb, 8);
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_a[x + 1] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[6], pred_L[6], pred_T[6];
|
|
int y1, y2, u, v, a1, a2;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2]];
|
|
pred_TL[4] = pred_L[4] = dst_a[-p->linesize[3]];
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
pred_T[0] = dst_y[-p->linesize[0] + x];
|
|
pred_T[3] = dst_y[-p->linesize[0] + x + 1];
|
|
pred_T[1] = dst_u[-p->linesize[1] + x / 2];
|
|
pred_T[2] = dst_v[-p->linesize[2] + x / 2];
|
|
pred_T[4] = dst_a[-p->linesize[3] + x];
|
|
pred_T[5] = dst_a[-p->linesize[3] + x + 1];
|
|
|
|
a1 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
a2 = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst_u[x / 2] = pred_L[1] = (u + (((pred_L[1] - pred_TL[1]) >> 1) + pred_T[1])) & 0xff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + ((3 * (pred_T[3] + pred_L[0]) - 2 * pred_T[0]) >> 2)) & 0xff;
|
|
dst_v[x / 2] = pred_L[2] = (v + (((pred_L[2] - pred_TL[2]) >> 1) + pred_T[2])) & 0xff;
|
|
dst_a[x ] = pred_L[4] = (a1 + ((3 * (pred_T[4] + pred_L[4]) - 2 * pred_TL[4]) >> 2)) & 0xff;
|
|
dst_a[x + 1] = pred_L[4] = (a2 + ((3 * (pred_T[5] + pred_L[4]) - 2 * pred_T[4]) >> 2)) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[3];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
pred_TL[4] = pred_T[5];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
dst_a += p->linesize[3];
|
|
}
|
|
}
|
|
|
|
static void decode_ybyr(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8) + 128;
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8) + 128;
|
|
}
|
|
} else {
|
|
int pred[4] = { -128, 128, 128, 0 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v;
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8) + 128;
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8) + 128;
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int y1, y2, u, v;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
pred_T[0] = dst_y[-p->linesize[0] + x];
|
|
pred_T[3] = dst_y[-p->linesize[0] + x + 1];
|
|
pred_T[1] = dst_u[-p->linesize[1] + x / 2];
|
|
pred_T[2] = dst_v[-p->linesize[2] + x / 2];
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst_u[x / 2] = pred_L[1] = (u + (((pred_L[1] - pred_TL[1]) >> 1) + pred_T[1])) & 0xff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + ((3 * (pred_T[3] + pred_L[0]) - 2 * pred_T[0]) >> 2)) & 0xff;
|
|
dst_v[x / 2] = pred_L[2] = (v + (((pred_L[2] - pred_TL[2]) >> 1) + pred_T[2])) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[3];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_byryi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, -128, -128, 0 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v;
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_L[4];
|
|
int y1, y2, u, v;
|
|
|
|
pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_L[2] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + pred_L[0]) & 0xff;
|
|
dst_u[x / 2] = pred_L[1] = (u + pred_L[1]) & 0xff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + pred_L[0]) & 0xff;
|
|
dst_v[x / 2] = pred_L[2] = (v + pred_L[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_byry(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, -128, -128, 0 };
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
int y1, y2, u, v;
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
|
|
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
|
|
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
dst_y[x ] = get_bits(gb, 8);
|
|
dst_u[x / 2] = get_bits(gb, 8);
|
|
dst_y[x + 1] = get_bits(gb, 8);
|
|
dst_v[x / 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int y1, y2, u, v;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x += 2) {
|
|
pred_T[0] = dst_y[-p->linesize[0] + x];
|
|
pred_T[3] = dst_y[-p->linesize[0] + x + 1];
|
|
pred_T[1] = dst_u[-p->linesize[1] + x / 2];
|
|
pred_T[2] = dst_v[-p->linesize[2] + x / 2];
|
|
|
|
y1 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y2 = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x ] = pred_L[0] = (y1 + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst_u[x / 2] = pred_L[1] = (u + (((pred_L[1] - pred_TL[1]) >> 1) + pred_T[1])) & 0xff;
|
|
dst_y[x + 1] = pred_L[0] = (y2 + ((3 * (pred_T[3] + pred_L[0]) - 2 * pred_T[0]) >> 2)) & 0xff;
|
|
dst_v[x / 2] = pred_L[2] = (v + (((pred_L[2] - pred_TL[2]) >> 1) + pred_T[2])) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[3];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_ybri(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { s->alt ? 125 : -146, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int y, u, v;
|
|
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x] = pred[0] = (y + pred[0]) & 0xff;
|
|
dst_u[x] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_v[x] = pred[2] = (v + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_L[4];
|
|
int y, u, v;
|
|
|
|
pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_L[2] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x] = pred_L[0] = (y + pred_L[0]) & 0xff;
|
|
dst_u[x] = pred_L[1] = (u + pred_L[1]) & 0xff;
|
|
dst_v[x] = pred_L[2] = (v + pred_L[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_ybr(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { s->alt ? 125 : -146, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int y, u, v;
|
|
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x] = pred[0] = (y + pred[0]) & 0xff;
|
|
dst_u[x] = pred[1] = (u + pred[1]) & 0xff;
|
|
dst_v[x] = pred[2] = (v + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int y, u, v;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_y[-p->linesize[0]];
|
|
pred_TL[1] = pred_L[1] = dst_u[-p->linesize[1]];
|
|
pred_TL[2] = pred_L[2] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst_y[-p->linesize[0] + x];
|
|
pred_T[1] = dst_u[-p->linesize[1] + x];
|
|
pred_T[2] = dst_v[-p->linesize[2] + x];
|
|
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_y[x] = pred_L[0] = (y + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst_u[x] = pred_L[1] = (u + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0xff;
|
|
dst_v[x] = pred_L[2] = (v + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_aybri(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_a, *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_a = p->data[3];
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 8);
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, s->alt ? 125 : -146, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int a, y, u, v;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred[0] = (a + pred[0]) & 0xff;
|
|
dst_y[x] = pred[1] = (y + pred[1]) & 0xff;
|
|
dst_u[x] = pred[2] = (u + pred[2]) & 0xff;
|
|
dst_v[x] = pred[3] = (v + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_a += p->linesize[3];
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 8);
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_L[4];
|
|
int a, y, u, v;
|
|
|
|
pred_L[0] = dst_a[-p->linesize[3]];
|
|
pred_L[1] = dst_y[-p->linesize[0]];
|
|
pred_L[2] = dst_u[-p->linesize[1]];
|
|
pred_L[3] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred_L[0] = (a + pred_L[0]) & 0xff;
|
|
dst_y[x] = pred_L[1] = (y + pred_L[1]) & 0xff;
|
|
dst_u[x] = pred_L[2] = (u + pred_L[2]) & 0xff;
|
|
dst_v[x] = pred_L[3] = (v + pred_L[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_a += p->linesize[3];
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_aybr(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst_a, *dst_y, *dst_u, *dst_v;
|
|
int x, y;
|
|
|
|
dst_a = p->data[3];
|
|
dst_y = p->data[0];
|
|
dst_u = p->data[1];
|
|
dst_v = p->data[2];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 8);
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { 125, s->alt ? 125 : -146, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int a, y, u, v;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred[0] = (a + pred[0]) & 0xff;
|
|
dst_y[x] = pred[1] = (y + pred[1]) & 0xff;
|
|
dst_u[x] = pred[2] = (u + pred[2]) & 0xff;
|
|
dst_v[x] = pred[3] = (v + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst_a += p->linesize[3];
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 8);
|
|
dst_y[x] = get_bits(gb, 8);
|
|
dst_u[x] = get_bits(gb, 8);
|
|
dst_v[x] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int a, y, u, v;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_a[-p->linesize[3]];
|
|
pred_TL[1] = pred_L[1] = dst_y[-p->linesize[0]];
|
|
pred_TL[2] = pred_L[2] = dst_u[-p->linesize[1]];
|
|
pred_TL[3] = pred_L[3] = dst_v[-p->linesize[2]];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst_a[-p->linesize[3] + x];
|
|
pred_T[1] = dst_y[-p->linesize[0] + x];
|
|
pred_T[2] = dst_u[-p->linesize[1] + x];
|
|
pred_T[3] = dst_v[-p->linesize[2] + x];
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
y = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
u = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
v = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred_L[0] = (a + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst_y[x] = pred_L[1] = (y + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0xff;
|
|
dst_u[x] = pred_L[2] = (u + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0xff;
|
|
dst_v[x] = pred_L[3] = (v + ((3 * (pred_T[3] + pred_L[3]) - 2 * pred_TL[3]) >> 2)) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
pred_TL[3] = pred_T[3];
|
|
}
|
|
}
|
|
|
|
dst_a += p->linesize[3];
|
|
dst_y += p->linesize[0];
|
|
dst_u += p->linesize[1];
|
|
dst_v += p->linesize[2];
|
|
}
|
|
}
|
|
|
|
static void decode_argxi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_r, *dst_g, *dst_b, *dst_a;
|
|
int x, y;
|
|
|
|
dst_r = (uint16_t *)p->data[2];
|
|
dst_g = (uint16_t *)p->data[0];
|
|
dst_b = (uint16_t *)p->data[1];
|
|
dst_a = (uint16_t *)p->data[3];
|
|
|
|
for (y = 0; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 10);
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 512, 512, 512, 512 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b, a;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred[3] = (a + pred[3]) & 0x3ff;
|
|
dst_r[x] = pred[0] = (r + pred[0]) & 0x3ff;
|
|
dst_g[x] = pred[1] = (r + g + pred[1]) & 0x3ff;
|
|
dst_b[x] = pred[2] = (r + g + b + pred[2]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_argx(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_r, *dst_g, *dst_b, *dst_a;
|
|
int x, y;
|
|
|
|
dst_r = (uint16_t *)p->data[2];
|
|
dst_g = (uint16_t *)p->data[0];
|
|
dst_b = (uint16_t *)p->data[1];
|
|
dst_a = (uint16_t *)p->data[3];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 10);
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 512, 512, 512, 512 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b, a;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred[3] = (a + pred[3]) & 0x3ff;
|
|
dst_r[x] = pred[0] = (r + pred[0]) & 0x3ff;
|
|
dst_g[x] = pred[1] = (r + g + pred[1]) & 0x3ff;
|
|
dst_b[x] = pred[2] = (r + g + b + pred[2]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_a[x] = get_bits(gb, 10);
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int r, g, b, a;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_r[-p->linesize[2] / 2];
|
|
pred_TL[1] = pred_L[1] = dst_g[-p->linesize[0] / 2];
|
|
pred_TL[2] = pred_L[2] = dst_b[-p->linesize[1] / 2];
|
|
pred_TL[3] = pred_L[3] = dst_a[-p->linesize[3] / 2];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst_r[-p->linesize[2] / 2 + x];
|
|
pred_T[1] = dst_g[-p->linesize[0] / 2 + x];
|
|
pred_T[2] = dst_b[-p->linesize[1] / 2 + x];
|
|
pred_T[3] = dst_a[-p->linesize[3] / 2 + x];
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_a[x] = pred_L[3] = (a + ((3 * (pred_T[3] + pred_L[3]) - 2 * pred_TL[3]) >> 2)) & 0x3ff;
|
|
dst_r[x] = pred_L[0] = (r + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
|
|
dst_g[x] = pred_L[1] = (r + g + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff;
|
|
dst_b[x] = pred_L[2] = (r + g + b + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0x3ff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
pred_TL[3] = pred_T[3];
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
dst_a += p->linesize[3] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_rgbxi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_r, *dst_g, *dst_b;
|
|
int x, y;
|
|
|
|
dst_r = (uint16_t *)p->data[2];
|
|
dst_g = (uint16_t *)p->data[0];
|
|
dst_b = (uint16_t *)p->data[1];
|
|
|
|
for (y = 0; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 512, 512, 512, 0 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b;
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_r[x] = pred[0] = (r + pred[0]) & 0x3ff;
|
|
dst_g[x] = pred[1] = (r + g + pred[1]) & 0x3ff;
|
|
dst_b[x] = pred[2] = (r + g + b + pred[2]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_rgbx(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint16_t *dst_r, *dst_g, *dst_b;
|
|
int x, y;
|
|
|
|
dst_r = (uint16_t *)p->data[2];
|
|
dst_g = (uint16_t *)p->data[0];
|
|
dst_b = (uint16_t *)p->data[1];
|
|
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred[4] = { 512, 512, 512, 0 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b;
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_r[x] = pred[0] = (r + pred[0]) & 0x3ff;
|
|
dst_g[x] = pred[1] = (r + g + pred[1]) & 0x3ff;
|
|
dst_b[x] = pred[2] = (r + g + b + pred[2]) & 0x3ff;
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst_r[x] = get_bits(gb, 10);
|
|
dst_g[x] = get_bits(gb, 10);
|
|
dst_b[x] = get_bits(gb, 10);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int r, g, b;
|
|
|
|
pred_TL[0] = pred_L[0] = dst_r[-p->linesize[2] / 2];
|
|
pred_TL[1] = pred_L[1] = dst_g[-p->linesize[0] / 2];
|
|
pred_TL[2] = pred_L[2] = dst_b[-p->linesize[1] / 2];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst_r[-p->linesize[2] / 2 + x];
|
|
pred_T[1] = dst_g[-p->linesize[0] / 2 + x];
|
|
pred_T[2] = dst_b[-p->linesize[1] / 2 + x];
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst_r[x] = pred_L[0] = (r + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff;
|
|
dst_g[x] = pred_L[1] = (r + g + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff;
|
|
dst_b[x] = pred_L[2] = (r + g + b + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0x3ff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
|
|
dst_r += p->linesize[2] / 2;
|
|
dst_g += p->linesize[0] / 2;
|
|
dst_b += p->linesize[1] / 2;
|
|
}
|
|
}
|
|
|
|
static void decode_argbi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst;
|
|
int x, y;
|
|
|
|
dst = p->data[0];
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
dst[x * 4 + 3] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { -128, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int a, r, g, b;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred[0] = (a + pred[0]) & 0xff;
|
|
dst[4 * x + 1] = pred[1] = (r + pred[1]) & 0xff;
|
|
dst[4 * x + 2] = pred[2] = (r + g + pred[2]) & 0xff;
|
|
dst[4 * x + 3] = pred[3] = (r + g + b + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst += p->linesize[0];
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
dst[x * 4 + 3] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_L[4];
|
|
int a, r, g, b;
|
|
|
|
pred_L[0] = dst[-p->linesize[0] + 0];
|
|
pred_L[1] = dst[-p->linesize[0] + 1];
|
|
pred_L[2] = dst[-p->linesize[0] + 2];
|
|
pred_L[3] = dst[-p->linesize[0] + 3];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred_L[0] = (a + pred_L[0]) & 0xff;
|
|
dst[4 * x + 1] = pred_L[1] = (r + pred_L[1]) & 0xff;
|
|
dst[4 * x + 2] = pred_L[2] = (r + g + pred_L[2]) & 0xff;
|
|
dst[4 * x + 3] = pred_L[3] = (r + g + b + pred_L[3]) & 0xff;
|
|
}
|
|
}
|
|
dst += p->linesize[0];
|
|
}
|
|
}
|
|
|
|
static void decode_argb(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst;
|
|
int x, y;
|
|
|
|
dst = p->data[0];
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
dst[x * 4 + 3] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { -128, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int a, r, g, b;
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred[0] = (a + pred[0]) & 0xff;
|
|
dst[4 * x + 1] = pred[1] = (r + pred[1]) & 0xff;
|
|
dst[4 * x + 2] = pred[2] = (r + g + pred[2]) & 0xff;
|
|
dst[4 * x + 3] = pred[3] = (r + g + b + pred[3]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst += p->linesize[0];
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
dst[x * 4 + 3] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int a, r, g, b;
|
|
|
|
pred_TL[0] = pred_L[0] = dst[-p->linesize[0] + 0];
|
|
pred_TL[1] = pred_L[1] = dst[-p->linesize[0] + 1];
|
|
pred_TL[2] = pred_L[2] = dst[-p->linesize[0] + 2];
|
|
pred_TL[3] = pred_L[3] = dst[-p->linesize[0] + 3];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst[-p->linesize[0] + 4 * x + 0];
|
|
pred_T[1] = dst[-p->linesize[0] + 4 * x + 1];
|
|
pred_T[2] = dst[-p->linesize[0] + 4 * x + 2];
|
|
pred_T[3] = dst[-p->linesize[0] + 4 * x + 3];
|
|
|
|
a = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred_L[0] = (a + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst[4 * x + 1] = pred_L[1] = (r + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0xff;
|
|
dst[4 * x + 2] = pred_L[2] = (r + g + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0xff;
|
|
dst[4 * x + 3] = pred_L[3] = (r + g + b + ((3 * (pred_T[3] + pred_L[3]) - 2 * pred_TL[3]) >> 2)) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
pred_TL[3] = pred_T[3];
|
|
}
|
|
}
|
|
dst += p->linesize[0];
|
|
}
|
|
}
|
|
|
|
static void decode_rgbi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst;
|
|
int x, y;
|
|
|
|
dst = p->data[0];
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { -128, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b;
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred[0] = (r + pred[0]) & 0xff;
|
|
dst[4 * x + 1] = pred[1] = (r + g + pred[1]) & 0xff;
|
|
dst[4 * x + 2] = pred[2] = (r + g + b + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst += p->linesize[0];
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_L[4];
|
|
int r, g, b;
|
|
|
|
pred_L[0] = dst[-p->linesize[0] + 0];
|
|
pred_L[1] = dst[-p->linesize[0] + 1];
|
|
pred_L[2] = dst[-p->linesize[0] + 2];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred_L[0] = (r + pred_L[0]) & 0xff;
|
|
dst[4 * x + 1] = pred_L[1] = (r + g + pred_L[1]) & 0xff;
|
|
dst[4 * x + 2] = pred_L[2] = (r + g + b + pred_L[2]) & 0xff;
|
|
}
|
|
}
|
|
dst += p->linesize[0];
|
|
}
|
|
}
|
|
|
|
static void decode_rgb(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
uint8_t *dst;
|
|
int x, y;
|
|
|
|
dst = p->data[0];
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred[4] = { -128, -128, -128, -128 };
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
int r, g, b;
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred[0] = (r + pred[0]) & 0xff;
|
|
dst[4 * x + 1] = pred[1] = (r + g + pred[1]) & 0xff;
|
|
dst[4 * x + 2] = pred[2] = (r + g + b + pred[2]) & 0xff;
|
|
}
|
|
}
|
|
|
|
dst += p->linesize[0];
|
|
for (y = 1; y < avctx->height; y++) {
|
|
if (get_bits1(gb)) {
|
|
for (x = 0; x < avctx->width; x++) {
|
|
dst[x * 4 + 0] = get_bits(gb, 8);
|
|
dst[x * 4 + 1] = get_bits(gb, 8);
|
|
dst[x * 4 + 2] = get_bits(gb, 8);
|
|
}
|
|
} else {
|
|
int pred_TL[4], pred_L[4], pred_T[4];
|
|
int r, g, b;
|
|
|
|
pred_TL[0] = pred_L[0] = dst[-p->linesize[0] + 0];
|
|
pred_TL[1] = pred_L[1] = dst[-p->linesize[0] + 1];
|
|
pred_TL[2] = pred_L[2] = dst[-p->linesize[0] + 2];
|
|
|
|
for (x = 0; x < avctx->width; x++) {
|
|
pred_T[0] = dst[-p->linesize[0] + 4 * x + 0];
|
|
pred_T[1] = dst[-p->linesize[0] + 4 * x + 1];
|
|
pred_T[2] = dst[-p->linesize[0] + 4 * x + 2];
|
|
|
|
r = get_vlc2(gb, s->vlc[0].table, SHEER_VLC_BITS, 2);
|
|
g = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
b = get_vlc2(gb, s->vlc[1].table, SHEER_VLC_BITS, 2);
|
|
|
|
dst[4 * x + 0] = pred_L[0] = (r + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0xff;
|
|
dst[4 * x + 1] = pred_L[1] = (r + g + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0xff;
|
|
dst[4 * x + 2] = pred_L[2] = (r + g + b + ((3 * (pred_T[2] + pred_L[2]) - 2 * pred_TL[2]) >> 2)) & 0xff;
|
|
|
|
pred_TL[0] = pred_T[0];
|
|
pred_TL[1] = pred_T[1];
|
|
pred_TL[2] = pred_T[2];
|
|
}
|
|
}
|
|
dst += p->linesize[0];
|
|
}
|
|
}
|
|
|
|
static av_cold int build_vlc(VLC *vlc, const SheerTable *table)
|
|
{
|
|
const uint8_t *cur = table->lens;
|
|
uint8_t lens[1024];
|
|
unsigned count = 0;
|
|
|
|
for (int step = 1, len = 1; len > 0; len += step) {
|
|
unsigned new_count = count;
|
|
|
|
if (len == 16) {
|
|
new_count += table->nb_16s;
|
|
step = -1;
|
|
} else
|
|
new_count += *cur++;
|
|
|
|
for (; count < new_count; count++)
|
|
lens[count] = len;
|
|
}
|
|
|
|
ff_free_vlc(vlc);
|
|
return ff_init_vlc_from_lengths(vlc, SHEER_VLC_BITS, count,
|
|
lens, sizeof(*lens), NULL, 0, 0, 0, 0, NULL);
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx,
|
|
void *data, int *got_frame,
|
|
AVPacket *avpkt)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
ThreadFrame frame = { .f = data };
|
|
const SheerTable *table;
|
|
AVFrame *p = data;
|
|
GetBitContext gb;
|
|
unsigned format;
|
|
int ret;
|
|
|
|
if (avpkt->size <= 20)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (AV_RL32(avpkt->data) != MKTAG('S','h','i','r') &&
|
|
AV_RL32(avpkt->data) != MKTAG('Z','w','a','k'))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
s->alt = 0;
|
|
format = AV_RL32(avpkt->data + 16);
|
|
av_log(avctx, AV_LOG_DEBUG, "format: %s\n", av_fourcc2str(format));
|
|
switch (format) {
|
|
case MKTAG(' ', 'R', 'G', 'B'):
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB0;
|
|
s->decode_frame = decode_rgb;
|
|
table = rgb;
|
|
break;
|
|
case MKTAG(' ', 'r', 'G', 'B'):
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB0;
|
|
s->decode_frame = decode_rgbi;
|
|
table = rgbi;
|
|
break;
|
|
case MKTAG('A', 'R', 'G', 'X'):
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
|
|
s->decode_frame = decode_argx;
|
|
table = rgbx;
|
|
break;
|
|
case MKTAG('A', 'r', 'G', 'X'):
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
|
|
s->decode_frame = decode_argxi;
|
|
table = rgbxi;
|
|
break;
|
|
case MKTAG('R', 'G', 'B', 'X'):
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRP10;
|
|
s->decode_frame = decode_rgbx;
|
|
table = rgbx;
|
|
break;
|
|
case MKTAG('r', 'G', 'B', 'X'):
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRP10;
|
|
s->decode_frame = decode_rgbxi;
|
|
table = rgbxi;
|
|
break;
|
|
case MKTAG('A', 'R', 'G', 'B'):
|
|
avctx->pix_fmt = AV_PIX_FMT_ARGB;
|
|
s->decode_frame = decode_argb;
|
|
table = rgb;
|
|
break;
|
|
case MKTAG('A', 'r', 'G', 'B'):
|
|
avctx->pix_fmt = AV_PIX_FMT_ARGB;
|
|
s->decode_frame = decode_argbi;
|
|
table = rgbi;
|
|
break;
|
|
case MKTAG('A', 'Y', 'B', 'R'):
|
|
s->alt = 1;
|
|
case MKTAG('A', 'Y', 'b', 'R'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
|
|
s->decode_frame = decode_aybr;
|
|
table = ybr;
|
|
break;
|
|
case MKTAG('A', 'y', 'B', 'R'):
|
|
s->alt = 1;
|
|
case MKTAG('A', 'y', 'b', 'R'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
|
|
s->decode_frame = decode_aybri;
|
|
table = ybri;
|
|
break;
|
|
case MKTAG(' ', 'Y', 'B', 'R'):
|
|
s->alt = 1;
|
|
case MKTAG(' ', 'Y', 'b', 'R'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
|
|
s->decode_frame = decode_ybr;
|
|
table = ybr;
|
|
break;
|
|
case MKTAG(' ', 'y', 'B', 'R'):
|
|
s->alt = 1;
|
|
case MKTAG(' ', 'y', 'b', 'R'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV444P;
|
|
s->decode_frame = decode_ybri;
|
|
table = ybri;
|
|
break;
|
|
case MKTAG('Y', 'B', 'R', 0x0a):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
|
|
s->decode_frame = decode_ybr10;
|
|
table = ybr10;
|
|
break;
|
|
case MKTAG('y', 'B', 'R', 0x0a):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
|
|
s->decode_frame = decode_ybr10i;
|
|
table = ybr10i;
|
|
break;
|
|
case MKTAG('C', 'A', '4', 'p'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
|
|
s->decode_frame = decode_ca4p;
|
|
table = ybr10;
|
|
break;
|
|
case MKTAG('C', 'A', '4', 'i'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA444P10;
|
|
s->decode_frame = decode_ca4i;
|
|
table = ybr10i;
|
|
break;
|
|
case MKTAG('B', 'Y', 'R', 'Y'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
|
|
s->decode_frame = decode_byry;
|
|
table = byry;
|
|
break;
|
|
case MKTAG('B', 'Y', 'R', 'y'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
|
|
s->decode_frame = decode_byryi;
|
|
table = byryi;
|
|
break;
|
|
case MKTAG('Y', 'b', 'Y', 'r'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
|
|
s->decode_frame = decode_ybyr;
|
|
table = ybyr;
|
|
break;
|
|
case MKTAG('C', '8', '2', 'p'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
|
|
s->decode_frame = decode_c82p;
|
|
table = byry;
|
|
break;
|
|
case MKTAG('C', '8', '2', 'i'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
|
|
s->decode_frame = decode_c82i;
|
|
table = byryi;
|
|
break;
|
|
case MKTAG(0xa2, 'Y', 'R', 'Y'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
|
|
s->decode_frame = decode_yry10;
|
|
table = yry10;
|
|
break;
|
|
case MKTAG(0xa2, 'Y', 'R', 'y'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
|
|
s->decode_frame = decode_yry10i;
|
|
table = yry10i;
|
|
break;
|
|
case MKTAG('C', 'A', '2', 'p'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
|
|
s->decode_frame = decode_ca2p;
|
|
table = yry10;
|
|
break;
|
|
case MKTAG('C', 'A', '2', 'i'):
|
|
avctx->pix_fmt = AV_PIX_FMT_YUVA422P10;
|
|
s->decode_frame = decode_ca2i;
|
|
table = yry10i;
|
|
break;
|
|
default:
|
|
avpriv_request_sample(avctx, "unsupported format: 0x%X", format);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (s->format != format) {
|
|
if ((ret = build_vlc(&s->vlc[0], &table[0])) < 0 ||
|
|
(ret = build_vlc(&s->vlc[1], &table[1])) < 0) {
|
|
s->format = 0;
|
|
return ret;
|
|
}
|
|
s->format = format;
|
|
}
|
|
if (avpkt->size < 20 + avctx->width * avctx->height / 16) {
|
|
av_log(avctx, AV_LOG_ERROR, "Input packet too small\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
p->pict_type = AV_PICTURE_TYPE_I;
|
|
p->key_frame = 1;
|
|
|
|
if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = init_get_bits8(&gb, avpkt->data + 20, avpkt->size - 20)) < 0)
|
|
return ret;
|
|
|
|
s->decode_frame(avctx, p, &gb);
|
|
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
{
|
|
SheerVideoContext *s = avctx->priv_data;
|
|
|
|
ff_free_vlc(&s->vlc[0]);
|
|
ff_free_vlc(&s->vlc[1]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_sheervideo_decoder = {
|
|
.name = "sheervideo",
|
|
.long_name = NULL_IF_CONFIG_SMALL("BitJazz SheerVideo"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_SHEERVIDEO,
|
|
.priv_data_size = sizeof(SheerVideoContext),
|
|
.close = decode_end,
|
|
.decode = decode_frame,
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
|
|
};
|