diff options
Diffstat (limited to 'src/libffmpeg/libavcodec/avs.c')
| -rw-r--r-- | src/libffmpeg/libavcodec/avs.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/src/libffmpeg/libavcodec/avs.c b/src/libffmpeg/libavcodec/avs.c deleted file mode 100644 index ebfa8adb7..000000000 --- a/src/libffmpeg/libavcodec/avs.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * AVS video decoder. - * Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org> - * - * 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 St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "avcodec.h" -#include "bitstream.h" - - -typedef struct { - AVFrame picture; -} avs_context_t; - -typedef enum { - AVS_VIDEO = 0x01, - AVS_AUDIO = 0x02, - AVS_PALETTE = 0x03, - AVS_GAME_DATA = 0x04, -} avs_block_type_t; - -typedef enum { - AVS_I_FRAME = 0x00, - AVS_P_FRAME_3X3 = 0x01, - AVS_P_FRAME_2X2 = 0x02, - AVS_P_FRAME_2X3 = 0x03, -} avs_video_sub_type_t; - - -static int -avs_decode_frame(AVCodecContext * avctx, - void *data, int *data_size, uint8_t * buf, int buf_size) -{ - avs_context_t *const avs = avctx->priv_data; - AVFrame *picture = data; - AVFrame *const p = (AVFrame *) & avs->picture; - uint8_t *table, *vect, *out; - int i, j, x, y, stride, vect_w = 3, vect_h = 3; - int sub_type; - avs_block_type_t type; - GetBitContext change_map; - - if (avctx->reget_buffer(avctx, p)) { - av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); - return -1; - } - p->reference = 1; - p->pict_type = FF_P_TYPE; - p->key_frame = 0; - - out = avs->picture.data[0]; - stride = avs->picture.linesize[0]; - - sub_type = buf[0]; - type = buf[1]; - buf += 4; - - if (type == AVS_PALETTE) { - int first, last; - uint32_t *pal = (uint32_t *) avs->picture.data[1]; - - first = AV_RL16(buf); - last = first + AV_RL16(buf + 2); - buf += 4; - for (i=first; i<last; i++, buf+=3) - pal[i] = (buf[0] << 18) | (buf[1] << 10) | (buf[2] << 2); - - sub_type = buf[0]; - type = buf[1]; - buf += 4; - } - - if (type != AVS_VIDEO) - return -1; - - switch (sub_type) { - case AVS_I_FRAME: - p->pict_type = FF_I_TYPE; - p->key_frame = 1; - case AVS_P_FRAME_3X3: - vect_w = 3; - vect_h = 3; - break; - - case AVS_P_FRAME_2X2: - vect_w = 2; - vect_h = 2; - break; - - case AVS_P_FRAME_2X3: - vect_w = 2; - vect_h = 3; - break; - - default: - return -1; - } - - table = buf + (256 * vect_w * vect_h); - if (sub_type != AVS_I_FRAME) { - int map_size = ((318 / vect_w + 7) / 8) * (198 / vect_h); - init_get_bits(&change_map, table, map_size); - table += map_size; - } - - for (y=0; y<198; y+=vect_h) { - for (x=0; x<318; x+=vect_w) { - if (sub_type == AVS_I_FRAME || get_bits1(&change_map)) { - vect = &buf[*table++ * (vect_w * vect_h)]; - for (j=0; j<vect_w; j++) { - out[(y + 0) * stride + x + j] = vect[(0 * vect_w) + j]; - out[(y + 1) * stride + x + j] = vect[(1 * vect_w) + j]; - if (vect_h == 3) - out[(y + 2) * stride + x + j] = - vect[(2 * vect_w) + j]; - } - } - } - if (sub_type != AVS_I_FRAME) - align_get_bits(&change_map); - } - - *picture = *(AVFrame *) & avs->picture; - *data_size = sizeof(AVPicture); - - return buf_size; -} - -static int avs_decode_init(AVCodecContext * avctx) -{ - avctx->pix_fmt = PIX_FMT_PAL8; - return 0; -} - -AVCodec avs_decoder = { - "avs", - CODEC_TYPE_VIDEO, - CODEC_ID_AVS, - sizeof(avs_context_t), - avs_decode_init, - NULL, - NULL, - avs_decode_frame, - CODEC_CAP_DR1, -}; |