X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Favidec.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Favidec.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=648d42370f5fb842788eeb43d9e972b180eb7ae9;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/avidec.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/avidec.c deleted file mode 100644 index 648d423..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/avidec.c +++ /dev/null @@ -1,458 +0,0 @@ -/* - * AVI decoder. - * Copyright (c) 2001 Fabrice Bellard. - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include "avformat.h" -#include "avi.h" - -//#define DEBUG - -static const struct AVI1Handler { - enum CodecID vcid; - enum CodecID acid; - uint32_t tag; -} AVI1Handlers[] = { - { CODEC_ID_DVVIDEO, CODEC_ID_DVAUDIO, MKTAG('d', 'v', 's', 'd') }, - { CODEC_ID_DVVIDEO, CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'h', 'd') }, - { CODEC_ID_DVVIDEO, CODEC_ID_DVAUDIO, MKTAG('d', 'v', 's', 'l') }, - /* This is supposed to be the last one */ - { CODEC_ID_NONE, CODEC_ID_NONE, 0 }, -}; - -typedef struct AVIIndex { - unsigned char tag[4]; - unsigned int flags, pos, len; - struct AVIIndex *next; -} AVIIndex; - -typedef struct { - int64_t riff_end; - int64_t movi_end; - int type; - uint8_t *buf; - int buf_size; - int stream_index; - offset_t movi_list; - AVIIndex *first, *last; -} AVIContext; - -#ifdef DEBUG -static void print_tag(const char *str, unsigned int tag, int size) -{ - printf("%s: tag=%c%c%c%c size=0x%x\n", - str, tag & 0xff, - (tag >> 8) & 0xff, - (tag >> 16) & 0xff, - (tag >> 24) & 0xff, - size); -} -#endif - -static int get_riff(AVIContext *avi, ByteIOContext *pb) -{ - uint32_t tag; - /* check RIFF header */ - tag = get_le32(pb); - - if (tag != MKTAG('R', 'I', 'F', 'F')) - return -1; - avi->riff_end = get_le32(pb); /* RIFF chunk size */ - avi->riff_end += url_ftell(pb); /* RIFF chunk end */ - tag = get_le32(pb); - if (tag != MKTAG('A', 'V', 'I', ' ') && tag != MKTAG('A', 'V', 'I', 'X')) - return -1; - - return 0; -} - -static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap) -{ - AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; - uint32_t tag, tag1, handler; - int codec_type, stream_index, frame_period, bit_rate, scale, rate; - unsigned int size, nb_frames; - int i, n; - AVStream *st; - int xan_video = 0; /* hack to support Xan A/V */ - - if (get_riff(avi, pb) < 0) - return -1; - - /* first list tag */ - stream_index = -1; - codec_type = -1; - frame_period = 0; - avi->type = 2; - avi->buf = av_malloc(1); - if (!avi->buf) - return -1; - avi->buf_size = 1; - for(;;) { - if (url_feof(pb)) - goto fail; - tag = get_le32(pb); - size = get_le32(pb); -#ifdef DEBUG - print_tag("tag", tag, size); -#endif - - switch(tag) { - case MKTAG('L', 'I', 'S', 'T'): - /* ignored, except when start of video packets */ - tag1 = get_le32(pb); -#ifdef DEBUG - print_tag("list", tag1, 0); -#endif - if (tag1 == MKTAG('m', 'o', 'v', 'i')) { - avi->movi_end = url_ftell(pb) + size - 4; -#ifdef DEBUG - printf("movi end=%Lx\n", avi->movi_end); -#endif - goto end_of_header; - } - break; - case MKTAG('a', 'v', 'i', 'h'): - /* avi header */ - /* using frame_period is bad idea */ - frame_period = get_le32(pb); - bit_rate = get_le32(pb) * 8; - url_fskip(pb, 4 * 4); - n = get_le32(pb); - for(i=0;inb_streams != 1) - goto fail; - avi->type = 1; - avi->stream_index = 0; - case MKTAG('v', 'i', 'd', 's'): - codec_type = CODEC_TYPE_VIDEO; - - if (stream_index >= s->nb_streams) { - url_fskip(pb, size - 4); - break; - } - - st = s->streams[stream_index]; - - handler = get_le32(pb); /* codec tag */ - get_le32(pb); /* flags */ - get_le16(pb); /* priority */ - get_le16(pb); /* language */ - get_le32(pb); /* XXX: initial frame ? */ - scale = get_le32(pb); /* scale */ - rate = get_le32(pb); /* rate */ - - if(scale && rate){ - st->codec.frame_rate = rate; - st->codec.frame_rate_base = scale; - }else if(frame_period){ - st->codec.frame_rate = 1000000; - st->codec.frame_rate_base = frame_period; - }else{ - st->codec.frame_rate = 25; - st->codec.frame_rate_base = 1; - } - get_le32(pb); /* start */ - nb_frames = get_le32(pb); - st->start_time = 0; - st->duration = (double)nb_frames * - st->codec.frame_rate_base * AV_TIME_BASE / - st->codec.frame_rate; - - if (avi->type == 1) { - AVStream *st; - - st = av_new_stream(s, 0); - if (!st) - goto fail; - - stream_index++; - - for (i=0; AVI1Handlers[i].tag != 0; ++i) - if (AVI1Handlers[i].tag == handler) - break; - - if (AVI1Handlers[i].tag != 0) { - s->streams[0]->codec.codec_type = CODEC_TYPE_VIDEO; - s->streams[0]->codec.codec_id = AVI1Handlers[i].vcid; - s->streams[1]->codec.codec_type = CODEC_TYPE_AUDIO; - s->streams[1]->codec.codec_id = AVI1Handlers[i].acid; - } else { - goto fail; - } - } - - url_fskip(pb, size - 9 * 4); - break; - case MKTAG('a', 'u', 'd', 's'): - { - unsigned int length, rate; - - codec_type = CODEC_TYPE_AUDIO; - - if (stream_index >= s->nb_streams) { - url_fskip(pb, size - 4); - break; - } - st = s->streams[stream_index]; - - get_le32(pb); /* tag */ - get_le32(pb); /* flags */ - get_le16(pb); /* priority */ - get_le16(pb); /* language */ - get_le32(pb); /* initial frame */ - get_le32(pb); /* scale */ - rate = get_le32(pb); - get_le32(pb); /* start */ - length = get_le32(pb); /* length, in samples or bytes */ - st->start_time = 0; - if (rate != 0) - st->duration = (int64_t)length * AV_TIME_BASE / rate; - url_fskip(pb, size - 9 * 4); - } - break; - default: - goto fail; - } - break; - case MKTAG('s', 't', 'r', 'f'): - /* stream header */ - if (stream_index >= s->nb_streams || avi->type == 1) { - url_fskip(pb, size); - } else { - st = s->streams[stream_index]; - switch(codec_type) { - case CODEC_TYPE_VIDEO: - get_le32(pb); /* size */ - st->codec.width = get_le32(pb); - st->codec.height = get_le32(pb); - get_le16(pb); /* panes */ - st->codec.bits_per_sample= get_le16(pb); /* depth */ - tag1 = get_le32(pb); - get_le32(pb); /* ImageSize */ - get_le32(pb); /* XPelsPerMeter */ - get_le32(pb); /* YPelsPerMeter */ - get_le32(pb); /* ClrUsed */ - get_le32(pb); /* ClrImportant */ - - st->codec.extradata_size= size - 10*4; - st->codec.extradata= av_malloc(st->codec.extradata_size); - get_buffer(pb, st->codec.extradata, st->codec.extradata_size); - - if(st->codec.extradata_size & 1) //FIXME check if the encoder really did this correctly - get_byte(pb); - -#ifdef DEBUG - print_tag("video", tag1, 0); -#endif - st->codec.codec_type = CODEC_TYPE_VIDEO; - st->codec.codec_tag = tag1; - st->codec.codec_id = codec_get_id(codec_bmp_tags, tag1); - if (st->codec.codec_id == CODEC_ID_XAN_WC4) - xan_video = 1; -// url_fskip(pb, size - 5 * 4); - break; - case CODEC_TYPE_AUDIO: - get_wav_header(pb, &st->codec, size); - if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */ - url_fskip(pb, 1); - /* special case time: To support Xan DPCM, hardcode - * the format if Xxan is the video codec */ - if (xan_video) - st->codec.codec_id = CODEC_ID_XAN_DPCM; - break; - default: - url_fskip(pb, size); - break; - } - } - break; - default: - /* skip tag */ - size += (size & 1); - url_fskip(pb, size); - break; - } - } - end_of_header: - /* check stream number */ - if (stream_index != s->nb_streams - 1) { - fail: - av_free(avi->buf); - for(i=0;inb_streams;i++) { - av_freep(&s->streams[i]->codec.extradata); - av_freep(&s->streams[i]); - } - return -1; - } - - return 0; -} - -static void __destruct_pkt(struct AVPacket *pkt) -{ - pkt->data = NULL; pkt->size = 0; - return; -} - -static int avi_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - AVIContext *avi = s->priv_data; - ByteIOContext *pb = &s->pb; - int n, d[8], size, i; - - memset(d, -1, sizeof(int)*8); - - if (avi->type == 1 && avi->stream_index) { - /* duplicate DV packet */ - av_init_packet(pkt); - pkt->data = avi->buf; - pkt->size = avi->buf_size; - pkt->destruct = __destruct_pkt; - pkt->stream_index = avi->stream_index; - avi->stream_index = !avi->stream_index; - return 0; - } - - for(i=url_ftell(pb); !url_feof(pb); i++) { - int j; - - if (i >= avi->movi_end) { /* Let's see if it's an OpenDML AVI */ - uint32_t tag, size, tag2; - url_fskip(pb, avi->riff_end - url_ftell(pb)); - if (get_riff(avi, pb) < 0) - return -1; - - tag = get_le32(pb); - size = get_le32(pb); - tag2 = get_le32(pb); - if (tag == MKTAG('L','I','S','T') && tag2 == MKTAG('m','o','v','i')) - avi->movi_end = url_ftell(pb) + size - 4; - else - return -1; - } - - for(j=0; j<7; j++) - d[j]= d[j+1]; - d[7]= get_byte(pb); - - size= d[4] + (d[5]<<8) + (d[6]<<16) + (d[7]<<24); - - //parse ix## - n= (d[2] - '0') * 10 + (d[3] - '0'); - if( d[2] >= '0' && d[2] <= '9' - && d[3] >= '0' && d[3] <= '9' - && d[0] == 'i' && d[1] == 'x' - && n < s->nb_streams - && i + size <= avi->movi_end){ - - url_fskip(pb, size); - } - - //parse ##dc/##wb - n= (d[0] - '0') * 10 + (d[1] - '0'); - if( d[0] >= '0' && d[0] <= '9' - && d[1] >= '0' && d[1] <= '9' - && ((d[2] == 'd' && d[3] == 'c') || - (d[2] == 'w' && d[3] == 'b') || - (d[2] == 'd' && d[3] == 'b') || - (d[2] == '_' && d[3] == '_')) - && n < s->nb_streams - && i + size <= avi->movi_end) { - - if (avi->type == 1) { - uint8_t *tbuf = av_realloc(avi->buf, size + FF_INPUT_BUFFER_PADDING_SIZE); - if (!tbuf) - return -1; - avi->buf = tbuf; - avi->buf_size = size; - av_init_packet(pkt); - pkt->data = avi->buf; - pkt->size = avi->buf_size; - pkt->destruct = __destruct_pkt; - avi->stream_index = n; - } else { - av_new_packet(pkt, size); - } - get_buffer(pb, pkt->data, size); - if (size & 1) - get_byte(pb); - pkt->stream_index = n; - pkt->flags |= PKT_FLAG_KEY; // FIXME: We really should read index for that - return 0; - } - } - return -1; -} - -static int avi_read_close(AVFormatContext *s) -{ - int i; - AVIContext *avi = s->priv_data; - av_free(avi->buf); - - for(i=0;inb_streams;i++) { - AVStream *st = s->streams[i]; -// av_free(st->priv_data); - av_free(st->codec.extradata); - } - - return 0; -} - -static int avi_probe(AVProbeData *p) -{ - /* check file header */ - if (p->buf_size <= 32) - return 0; - if (p->buf[0] == 'R' && p->buf[1] == 'I' && - p->buf[2] == 'F' && p->buf[3] == 'F' && - p->buf[8] == 'A' && p->buf[9] == 'V' && - p->buf[10] == 'I' && p->buf[11] == ' ') - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static AVInputFormat avi_iformat = { - "avi", - "avi format", - sizeof(AVIContext), - avi_probe, - avi_read_header, - avi_read_packet, - avi_read_close, -}; - -int avidec_init(void) -{ - av_register_input_format(&avi_iformat); - return 0; -}