| /* |
| * BitJazz SheerVideo decoder |
| * Copyright (c) 2016 Paul B Mahol |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #define CACHED_BITSTREAM_READER !ARCH_X86_32 |
| #define SHEER_VLC_BITS 12 |
| |
| #include "libavutil/intreadwrite.h" |
| #include "avcodec.h" |
| #include "get_bits.h" |
| #include "internal.h" |
| #include "thread.h" |
| #include "sheervideodata.h" |
| |
| typedef struct SheerVideoContext { |
| unsigned format; |
| int alt; |
| VLC vlc[2]; |
| void (*decode_frame)(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb); |
| } SheerVideoContext; |
| |
| static void decode_ca4i(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_a = (uint16_t *)p->data[3]; |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| 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_y[x] = get_bits(gb, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } else { |
| int pred[4] = { 502, 512, 512, 502 }; |
| |
| for (x = 0; x < avctx->width; x++) { |
| int y, u, v, a; |
| |
| 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[3] = (a + pred[3]) & 0x3ff; |
| dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff; |
| dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_v[x] = pred[2] = (v + pred[2]) & 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_ca4p(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_a = (uint16_t *)p->data[3]; |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| if (get_bits1(gb)) { |
| for (x = 0; x < avctx->width; x++) { |
| dst_a[x] = get_bits(gb, 10); |
| dst_y[x] = get_bits(gb, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } else { |
| int pred[4] = { 502, 512, 512, 502 }; |
| |
| for (x = 0; x < avctx->width; x++) { |
| int y, u, v, a; |
| |
| 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[3] = (a + pred[3]) & 0x3ff; |
| dst_y[x] = pred[0] = (y + pred[0]) & 0x3ff; |
| dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_v[x] = pred[2] = (v + pred[2]) & 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++) { |
| dst_a[x] = get_bits(gb, 10); |
| dst_y[x] = get_bits(gb, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } else { |
| int pred_TL[4], pred_L[4], pred_T[4]; |
| int y, u, v, a; |
| |
| 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[3] = pred_L[3] = dst_a[-p->linesize[3] / 2]; |
| |
| for (x = 0; x < avctx->width; x++) { |
| pred_T[0] = dst_y[-p->linesize[0] / 2 + x]; |
| pred_T[1] = dst_u[-p->linesize[1] / 2 + x]; |
| pred_T[2] = dst_v[-p->linesize[2] / 2 + x]; |
| pred_T[3] = dst_a[-p->linesize[3] / 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[3] = (a + ((3 * (pred_T[3] + pred_L[3]) - 2 * pred_TL[3]) >> 2)) & 0x3ff; |
| dst_y[x] = pred_L[0] = (y + ((3 * (pred_T[0] + pred_L[0]) - 2 * pred_TL[0]) >> 2)) & 0x3ff; |
| dst_u[x] = pred_L[1] = (u + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff; |
| dst_v[x] = pred_L[2] = (v + ((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_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_ybr10i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb) |
| { |
| SheerVideoContext *s = avctx->priv_data; |
| uint16_t *dst_y, *dst_u, *dst_v; |
| int x, y; |
| |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| for (y = 0; y < avctx->height; y++) { |
| if (get_bits1(gb)) { |
| for (x = 0; x < avctx->width; x++) { |
| dst_y[x] = get_bits(gb, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } else { |
| int pred[4] = { 502, 512, 512, 512 }; |
| |
| 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]) & 0x3ff; |
| dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff; |
| } |
| } |
| |
| dst_y += p->linesize[0] / 2; |
| dst_u += p->linesize[1] / 2; |
| dst_v += p->linesize[2] / 2; |
| } |
| } |
| |
| static void decode_ybr10(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb) |
| { |
| SheerVideoContext *s = avctx->priv_data; |
| uint16_t *dst_y, *dst_u, *dst_v; |
| int x, y; |
| |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| if (get_bits1(gb)) { |
| for (x = 0; x < avctx->width; x++) { |
| dst_y[x] = get_bits(gb, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } else { |
| int pred[4] = { 502, 512, 512, 512 }; |
| |
| 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]) & 0x3ff; |
| dst_u[x] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_v[x] = pred[2] = (v + pred[2]) & 0x3ff; |
| } |
| } |
| |
| dst_y += p->linesize[0] / 2; |
| dst_u += p->linesize[1] / 2; |
| dst_v += p->linesize[2] / 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, 10); |
| dst_u[x] = get_bits(gb, 10); |
| dst_v[x] = get_bits(gb, 10); |
| } |
| } 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] / 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]; |
| |
| for (x = 0; x < avctx->width; x++) { |
| pred_T[0] = dst_y[-p->linesize[0] / 2 + x]; |
| pred_T[1] = dst_u[-p->linesize[1] / 2 + x]; |
| pred_T[2] = dst_v[-p->linesize[2] / 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)) & 0x3ff; |
| dst_u[x] = pred_L[1] = (u + ((3 * (pred_T[1] + pred_L[1]) - 2 * pred_TL[1]) >> 2)) & 0x3ff; |
| dst_v[x] = pred_L[2] = (v + ((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_y += p->linesize[0] / 2; |
| dst_u += p->linesize[1] / 2; |
| dst_v += p->linesize[2] / 2; |
| } |
| } |
| |
| static void decode_yry10i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb) |
| { |
| SheerVideoContext *s = avctx->priv_data; |
| uint16_t *dst_y, *dst_u, *dst_v; |
| int x, y; |
| |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| for (y = 0; y < avctx->height; y++) { |
| if (get_bits1(gb)) { |
| for (x = 0; x < avctx->width; x += 2) { |
| dst_y[x ] = get_bits(gb, 10); |
| dst_u[x / 2] = 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, 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]) & 0x3ff; |
| dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff; |
| dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff; |
| } |
| } |
| |
| dst_y += p->linesize[0] / 2; |
| dst_u += p->linesize[1] / 2; |
| dst_v += p->linesize[2] / 2; |
| } |
| } |
| |
| static void decode_yry10(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb) |
| { |
| SheerVideoContext *s = avctx->priv_data; |
| uint16_t *dst_y, *dst_u, *dst_v; |
| int x, y; |
| |
| dst_y = (uint16_t *)p->data[0]; |
| dst_u = (uint16_t *)p->data[1]; |
| dst_v = (uint16_t *)p->data[2]; |
| |
| if (get_bits1(gb)) { |
| for (x = 0; x < avctx->width; x += 2) { |
| dst_y[x ] = get_bits(gb, 10); |
| dst_u[x / 2] = 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, 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]) & 0x3ff; |
| dst_u[x / 2] = pred[1] = (u + pred[1]) & 0x3ff; |
| dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0x3ff; |
| dst_v[x / 2] = pred[2] = (v + pred[2]) & 0x3ff; |
| } |
| } |
| |
| dst_y += p->linesize[0] / 2; |
| dst_u += p->linesize[1] / 2; |
| dst_v += p->linesize[2] / 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, 10); |
| dst_u[x / 2] = 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; |
| |
| 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]; |
| |
| 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]; |
| |
| 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", |