diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavcodec/bintext.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavcodec/bintext.c')
| -rw-r--r-- | ffmpeg/libavcodec/bintext.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/ffmpeg/libavcodec/bintext.c b/ffmpeg/libavcodec/bintext.c deleted file mode 100644 index 97fceb1..0000000 --- a/ffmpeg/libavcodec/bintext.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * Binary text decoder - * eXtended BINary text (XBIN) decoder - * iCEDraw File decoder - * Copyright (c) 2010 Peter Ross (pross@xvid.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 Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Binary text decoder - * eXtended BINary text (XBIN) decoder - * iCEDraw File decoder - */ - -#include "libavutil/intreadwrite.h" -#include "libavutil/xga_font_data.h" -#include "avcodec.h" -#include "cga_data.h" -#include "bintext.h" -#include "internal.h" - -typedef struct XbinContext { - AVFrame *frame; - int palette[16]; - int flags; - int font_height; - const uint8_t *font; - int x, y; -} XbinContext; - -static av_cold int decode_init(AVCodecContext *avctx) -{ - XbinContext *s = avctx->priv_data; - uint8_t *p; - int i; - - avctx->pix_fmt = AV_PIX_FMT_PAL8; - p = avctx->extradata; - if (p) { - s->font_height = p[0]; - s->flags = p[1]; - p += 2; - if(avctx->extradata_size < 2 + (!!(s->flags & BINTEXT_PALETTE))*3*16 - + (!!(s->flags & BINTEXT_FONT))*s->font_height*256) { - av_log(avctx, AV_LOG_ERROR, "not enough extradata\n"); - return AVERROR_INVALIDDATA; - } - } else { - s->font_height = 8; - s->flags = 0; - } - - if ((s->flags & BINTEXT_PALETTE)) { - for (i = 0; i < 16; i++) { - s->palette[i] = 0xFF000000 | (AV_RB24(p) << 2) | ((AV_RB24(p) >> 4) & 0x30303); - p += 3; - } - } else { - for (i = 0; i < 16; i++) - s->palette[i] = 0xFF000000 | ff_cga_palette[i]; - } - - if ((s->flags & BINTEXT_FONT)) { - s->font = p; - } else { - switch(s->font_height) { - default: - av_log(avctx, AV_LOG_WARNING, "font height %i not supported\n", s->font_height); - s->font_height = 8; - case 8: - s->font = avpriv_cga_font; - break; - case 16: - s->font = avpriv_vga16_font; - break; - } - } - - s->frame = av_frame_alloc(); - if (!s->frame) - return AVERROR(ENOMEM); - - return 0; -} - -#define DEFAULT_BG_COLOR 0 -av_unused static void hscroll(AVCodecContext *avctx) -{ - XbinContext *s = avctx->priv_data; - if (s->y < avctx->height - s->font_height) { - s->y += s->font_height; - } else { - memmove(s->frame->data[0], s->frame->data[0] + s->font_height*s->frame->linesize[0], - (avctx->height - s->font_height)*s->frame->linesize[0]); - memset(s->frame->data[0] + (avctx->height - s->font_height)*s->frame->linesize[0], - DEFAULT_BG_COLOR, s->font_height * s->frame->linesize[0]); - } -} - -#define FONT_WIDTH 8 - -/** - * Draw character to screen - */ -static void draw_char(AVCodecContext *avctx, int c, int a) -{ - XbinContext *s = avctx->priv_data; - if (s->y > avctx->height - s->font_height) - return; - ff_draw_pc_font(s->frame->data[0] + s->y * s->frame->linesize[0] + s->x, - s->frame->linesize[0], s->font, s->font_height, c, - a & 0x0F, a >> 4); - s->x += FONT_WIDTH; - if (s->x > avctx->width - FONT_WIDTH) { - s->x = 0; - s->y += s->font_height; - } -} - -static int decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - XbinContext *s = avctx->priv_data; - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - const uint8_t *buf_end = buf+buf_size; - int ret; - - s->x = s->y = 0; - if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) - return ret; - s->frame->pict_type = AV_PICTURE_TYPE_I; - s->frame->palette_has_changed = 1; - memcpy(s->frame->data[1], s->palette, 16 * 4); - - if (avctx->codec_id == AV_CODEC_ID_XBIN) { - while (buf + 2 < buf_end) { - int i,c,a; - int type = *buf >> 6; - int count = (*buf & 0x3F) + 1; - buf++; - switch (type) { - case 0: //no compression - for (i = 0; i < count && buf + 1 < buf_end; i++) { - draw_char(avctx, buf[0], buf[1]); - buf += 2; - } - break; - case 1: //character compression - c = *buf++; - for (i = 0; i < count && buf < buf_end; i++) - draw_char(avctx, c, *buf++); - break; - case 2: //attribute compression - a = *buf++; - for (i = 0; i < count && buf < buf_end; i++) - draw_char(avctx, *buf++, a); - break; - case 3: //character/attribute compression - c = *buf++; - a = *buf++; - for (i = 0; i < count && buf < buf_end; i++) - draw_char(avctx, c, a); - break; - } - } - } else if (avctx->codec_id == AV_CODEC_ID_IDF) { - while (buf + 2 < buf_end) { - if (AV_RL16(buf) == 1) { - int i; - if (buf + 6 > buf_end) - break; - for (i = 0; i < buf[2]; i++) - draw_char(avctx, buf[4], buf[5]); - buf += 6; - } else { - draw_char(avctx, buf[0], buf[1]); - buf += 2; - } - } - } else { - while (buf + 1 < buf_end) { - draw_char(avctx, buf[0], buf[1]); - buf += 2; - } - } - - if ((ret = av_frame_ref(data, s->frame)) < 0) - return ret; - *got_frame = 1; - return buf_size; -} - -static av_cold int decode_end(AVCodecContext *avctx) -{ - XbinContext *s = avctx->priv_data; - - av_frame_free(&s->frame); - - return 0; -} - -#if CONFIG_BINTEXT_DECODER -AVCodec ff_bintext_decoder = { - .name = "bintext", - .long_name = NULL_IF_CONFIG_SMALL("Binary text"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_BINTEXT, - .priv_data_size = sizeof(XbinContext), - .init = decode_init, - .close = decode_end, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, -}; -#endif -#if CONFIG_XBIN_DECODER -AVCodec ff_xbin_decoder = { - .name = "xbin", - .long_name = NULL_IF_CONFIG_SMALL("eXtended BINary text"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_XBIN, - .priv_data_size = sizeof(XbinContext), - .init = decode_init, - .close = decode_end, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, -}; -#endif -#if CONFIG_IDF_DECODER -AVCodec ff_idf_decoder = { - .name = "idf", - .long_name = NULL_IF_CONFIG_SMALL("iCEDraw text"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_IDF, - .priv_data_size = sizeof(XbinContext), - .init = decode_init, - .close = decode_end, - .decode = decode_frame, - .capabilities = CODEC_CAP_DR1, -}; -#endif |
