mirror of https://github.com/FFmpeg/FFmpeg.git
courtesy of Konstantin Shishkov Originally committed as revision 3529 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Mike Melanson
21 years ago
parent
98772cbf7b
commit
d08d7142fd
12 changed files with 430 additions and 2 deletions
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/*
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* QuickDraw (qdrw) codec |
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* Copyright (c) 2004 Konstantin Shishkov |
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* |
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* This library 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 of the License, or (at your option) any later version. |
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* |
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* This library 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 this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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/**
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* @file qdrw.c |
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* Apple QuickDraw codec. |
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*/ |
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#include "avcodec.h" |
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#include "mpegvideo.h" |
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typedef struct QdrawContext{ |
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AVCodecContext *avctx; |
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AVFrame pic; |
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uint8_t palette[256*3]; |
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} QdrawContext; |
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static int decode_frame(AVCodecContext *avctx,
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void *data, int *data_size, |
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uint8_t *buf, int buf_size) |
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{ |
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QdrawContext * const a = avctx->priv_data; |
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AVFrame * const p= (AVFrame*)&a->pic; |
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uint8_t* outdata; |
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int colors; |
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int i; |
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/* special case for last picture */ |
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if (buf_size == 0) { |
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return 0; |
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} |
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if(p->data[0]) |
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avctx->release_buffer(avctx, p); |
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p->reference= 0; |
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if(avctx->get_buffer(avctx, p) < 0){ |
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); |
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return -1; |
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} |
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p->pict_type= I_TYPE; |
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p->key_frame= 1; |
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outdata = a->pic.data[0]; |
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buf += 0x68; /* jump to palette */ |
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colors = BE_32(buf); |
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buf += 4; |
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if(colors < 0 || colors > 256) { |
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av_log(avctx, AV_LOG_ERROR, "Error color count - %i(0x%X)\n", colors, colors); |
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return -1; |
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} |
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for (i = 0; i <= colors; i++) { |
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int idx; |
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idx = BE_16(buf); /* color index */ |
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buf += 2; |
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a->palette[idx * 3 + 0] = *buf++; |
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buf++; |
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a->palette[idx * 3 + 1] = *buf++; |
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buf++; |
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a->palette[idx * 3 + 2] = *buf++; |
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buf++; |
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} |
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if (colors) |
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a->pic.palette_has_changed = 1; |
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buf += 18; /* skip unneeded data */ |
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for (i = 0; i < avctx->height; i++) { |
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int size, left, code, pix; |
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uint8_t *next; |
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uint8_t *out; |
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int tsize = 0; |
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/* decode line */ |
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out = outdata; |
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size = BE_16(buf); /* size of packed line */ |
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buf += 2; |
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left = size; |
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next = buf + size; |
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while (left > 0) { |
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code = *buf++; |
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if (code & 0x80 ) { /* run */ |
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int i; |
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pix = *buf++; |
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for (i = 0; i < 257 - code; i++) { |
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*out++ = a->palette[pix * 3 + 0]; |
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*out++ = a->palette[pix * 3 + 1]; |
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*out++ = a->palette[pix * 3 + 2]; |
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} |
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tsize += 257 - code; |
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left -= 2; |
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} else { /* copy */ |
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int i, pix; |
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for (i = 0; i <= code; i++) { |
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pix = *buf++; |
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*out++ = a->palette[pix * 3 + 0]; |
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*out++ = a->palette[pix * 3 + 1]; |
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*out++ = a->palette[pix * 3 + 2]; |
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} |
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left -= 2 + code; |
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tsize += code + 1; |
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} |
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} |
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buf = next; |
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outdata += a->pic.linesize[0]; |
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} |
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*data_size = sizeof(AVFrame); |
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*(AVFrame*)data = a->pic; |
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return buf_size; |
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} |
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static int decode_init(AVCodecContext *avctx){ |
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// QdrawContext * const a = avctx->priv_data;
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avctx->pix_fmt= PIX_FMT_RGB24; |
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return 0; |
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} |
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AVCodec qdraw_decoder = { |
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"qdraw", |
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CODEC_TYPE_VIDEO, |
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CODEC_ID_QDRAW, |
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sizeof(QdrawContext), |
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decode_init, |
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NULL, |
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NULL, |
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decode_frame, |
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CODEC_CAP_DR1, |
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}; |
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@ -0,0 +1,166 @@ |
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/*
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* Sierra SOL decoder |
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* Copyright Konstantin Shishkov. |
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* |
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* This library 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 of the License, or (at your option) any later version. |
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* |
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* This library 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 this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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/*
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* Based on documents from Game Audio Player and own research |
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*/ |
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#include "avformat.h" |
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#include "avi.h" |
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#include "bswap.h" |
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/* if we don't know the size in advance */ |
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#define AU_UNKOWN_SIZE ((uint32_t)(~0)) |
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static int sol_probe(AVProbeData *p) |
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{ |
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/* check file header */ |
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uint16_t magic; |
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if (p->buf_size <= 14) |
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return 0; |
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magic=le2me_16(*((uint16_t*)p->buf)); |
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if ((magic == 0x0B8D || magic == 0x0C0D || magic == 0x0C8D) && |
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p->buf[2] == 'S' && p->buf[3] == 'O' && |
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p->buf[4] == 'L' && p->buf[5] == 0) |
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return AVPROBE_SCORE_MAX; |
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else |
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return 0; |
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} |
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#define SOL_DPCM 1 |
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#define SOL_16BIT 4 |
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#define SOL_STEREO 16 |
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static int sol_codec_id(int magic, int type) |
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{ |
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if (magic == 0x0B8D) |
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{ |
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if (type & SOL_DPCM) return CODEC_ID_SOL_DPCM; |
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else return CODEC_ID_PCM_U8; |
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} |
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if (type & SOL_DPCM) |
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{ |
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if (type & SOL_16BIT) return CODEC_ID_SOL_DPCM; |
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else if (magic == 0x0C8D) return CODEC_ID_SOL_DPCM; |
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else return CODEC_ID_SOL_DPCM; |
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} |
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if (type & SOL_16BIT) return CODEC_ID_PCM_S16LE; |
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return CODEC_ID_PCM_U8; |
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} |
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static int sol_codec_type(int magic, int type) |
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{ |
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if (magic == 0x0B8D) return 1;//SOL_DPCM_OLD;
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if (type & SOL_DPCM) |
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{ |
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if (type & SOL_16BIT) return 3;//SOL_DPCM_NEW16;
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else if (magic == 0x0C8D) return 1;//SOL_DPCM_OLD;
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else return 2;//SOL_DPCM_NEW8;
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} |
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return -1; |
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} |
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static int sol_channels(int magic, int type) |
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{ |
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if (magic == 0x0B8D || !(type & SOL_STEREO)) return 1; |
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return 2; |
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} |
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static int sol_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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int size; |
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unsigned int magic,tag; |
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ByteIOContext *pb = &s->pb; |
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unsigned int id, codec, channels, rate, type; |
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AVStream *st; |
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/* check ".snd" header */ |
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magic = get_le16(pb); |
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tag = get_le32(pb); |
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if (tag != MKTAG('S', 'O', 'L', 0)) |
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return -1; |
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rate = get_le16(pb); |
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type = get_byte(pb); |
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size = get_le32(pb); |
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if (magic != 0x0B8D) |
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get_byte(pb); /* newer SOLs contain padding byte */ |
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codec = sol_codec_id(magic, type); |
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channels = sol_channels(magic, type); |
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if (codec == CODEC_ID_SOL_DPCM) |
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id = sol_codec_type(magic, type); |
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else id = 0; |
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/* now we are ready: build format streams */ |
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st = av_new_stream(s, 0); |
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if (!st) |
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return -1; |
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st->codec.codec_type = CODEC_TYPE_AUDIO; |
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st->codec.codec_tag = id; |
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st->codec.codec_id = codec; |
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st->codec.channels = channels; |
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st->codec.sample_rate = rate; |
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return 0; |
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} |
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#define MAX_SIZE 4096 |
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static int sol_read_packet(AVFormatContext *s, |
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AVPacket *pkt) |
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{ |
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int ret; |
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if (url_feof(&s->pb)) |
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return -EIO; |
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if (av_new_packet(pkt, MAX_SIZE)) |
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return -EIO; |
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pkt->stream_index = 0; |
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ret = get_buffer(&s->pb, pkt->data, pkt->size); |
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if (ret < 0) |
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av_free_packet(pkt); |
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/* note: we need to modify the packet size here to handle the last
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packet */ |
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pkt->size = ret; |
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return 0; |
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} |
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static int sol_read_close(AVFormatContext *s) |
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{ |
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return 0; |
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} |
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static AVInputFormat sol_iformat = { |
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"sol", |
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"Sierra SOL Format", |
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0, |
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sol_probe, |
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sol_read_header, |
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sol_read_packet, |
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sol_read_close, |
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pcm_read_seek, |
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}; |
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int sol_init(void) |
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{ |
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av_register_input_format(&sol_iformat); |
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return 0; |
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} |
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