From 5e293c424d8035449cadc90dc8bf55ee09e01ce6 Mon Sep 17 00:00:00 2001 From: Aurelien Jacobs Date: Thu, 26 Feb 2009 15:44:19 +0000 Subject: rename asf-enc.c to asfenc.c and asf.c to asfdec.c for consistency Originally committed as revision 17618 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/asf.c | 1090 ----------------------------------------------------- 1 file changed, 1090 deletions(-) delete mode 100644 libavformat/asf.c (limited to 'libavformat/asf.c') diff --git a/libavformat/asf.c b/libavformat/asf.c deleted file mode 100644 index bcaf2a1c16..0000000000 --- a/libavformat/asf.c +++ /dev/null @@ -1,1090 +0,0 @@ -/* - * ASF compatible demuxer - * Copyright (c) 2000, 2001 Fabrice Bellard - * - * 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 "libavutil/common.h" -#include "libavcodec/mpegaudio.h" -#include "avformat.h" -#include "riff.h" -#include "asf.h" -#include "asfcrypt.h" - -void ff_mms_set_stream_selection(URLContext *h, AVFormatContext *format); - -#undef NDEBUG -#include - -#define FRAME_HEADER_SIZE 17 -// Fix Me! FRAME_HEADER_SIZE may be different. - -static const GUID index_guid = { - 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb -}; - -static const GUID stream_bitrate_guid = { /* (http://get.to/sdp) */ - 0xce, 0x75, 0xf8, 0x7b, 0x8d, 0x46, 0xd1, 0x11, 0x8d, 0x82, 0x00, 0x60, 0x97, 0xc9, 0xa2, 0xb2 -}; -/**********************************/ -/* decoding */ - -//#define DEBUG - -#ifdef DEBUG -#define PRINT_IF_GUID(g,cmp) \ -if (!memcmp(g, &cmp, sizeof(GUID))) \ - dprintf(NULL, "(GUID: %s) ", #cmp) - -static void print_guid(const GUID *g) -{ - int i; - PRINT_IF_GUID(g, asf_header); - else PRINT_IF_GUID(g, file_header); - else PRINT_IF_GUID(g, stream_header); - else PRINT_IF_GUID(g, audio_stream); - else PRINT_IF_GUID(g, audio_conceal_none); - else PRINT_IF_GUID(g, video_stream); - else PRINT_IF_GUID(g, video_conceal_none); - else PRINT_IF_GUID(g, command_stream); - else PRINT_IF_GUID(g, comment_header); - else PRINT_IF_GUID(g, codec_comment_header); - else PRINT_IF_GUID(g, codec_comment1_header); - else PRINT_IF_GUID(g, data_header); - else PRINT_IF_GUID(g, index_guid); - else PRINT_IF_GUID(g, head1_guid); - else PRINT_IF_GUID(g, head2_guid); - else PRINT_IF_GUID(g, my_guid); - else PRINT_IF_GUID(g, ext_stream_header); - else PRINT_IF_GUID(g, extended_content_header); - else PRINT_IF_GUID(g, ext_stream_embed_stream_header); - else PRINT_IF_GUID(g, ext_stream_audio_stream); - else PRINT_IF_GUID(g, metadata_header); - else PRINT_IF_GUID(g, stream_bitrate_guid); - else - dprintf(NULL, "(GUID: unknown) "); - for(i=0;i<16;i++) - dprintf(NULL, " 0x%02x,", (*g)[i]); - dprintf(NULL, "}\n"); -} -#undef PRINT_IF_GUID -#else -#define print_guid(g) -#endif - -static void get_guid(ByteIOContext *s, GUID *g) -{ - assert(sizeof(*g) == 16); - get_buffer(s, *g, sizeof(*g)); -} - -#if 0 -static void get_str16(ByteIOContext *pb, char *buf, int buf_size) -{ - int len, c; - char *q; - - len = get_le16(pb); - q = buf; - while (len > 0) { - c = get_le16(pb); - if ((q - buf) < buf_size - 1) - *q++ = c; - len--; - } - *q = '\0'; -} -#endif - -static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size) -{ - char* q = buf; - len /= 2; - while (len--) { - uint8_t tmp; - PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;) - } - *q = '\0'; -} - -static int asf_probe(AVProbeData *pd) -{ - /* check file header */ - if (!memcmp(pd->buf, &asf_header, sizeof(GUID))) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static int get_value(ByteIOContext *pb, int type){ - switch(type){ - case 2: return get_le32(pb); - case 3: return get_le32(pb); - case 4: return get_le64(pb); - case 5: return get_le16(pb); - default:return INT_MIN; - } -} - -static void get_tag(AVFormatContext *s, const char *key, int type, int len) -{ - char value[1024]; - if (type <= 1) { // unicode or byte - get_str16_nolen(s->pb, len, value, sizeof(value)); - } else if (type <= 5) { // boolean or DWORD or QWORD or WORD - uint64_t num = get_value(s->pb, type); - snprintf(value, sizeof(value), "%"PRIu64, num); - } else { - url_fskip(s->pb, len); - return; - } - if (strncmp(key, "WM/", 3)) - key += 3; - av_metadata_set(&s->metadata, key, value); -} - -static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap) -{ - ASFContext *asf = s->priv_data; - GUID g; - ByteIOContext *pb = s->pb; - AVStream *st; - ASFStream *asf_st; - int size, i; - int64_t gsize; - AVRational dar[128]; - uint32_t bitrate[128]; - - memset(dar, 0, sizeof(dar)); - memset(bitrate, 0, sizeof(bitrate)); - - get_guid(pb, &g); - if (memcmp(&g, &asf_header, sizeof(GUID))) - return -1; - get_le64(pb); - get_le32(pb); - get_byte(pb); - get_byte(pb); - memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid)); - for(;;) { - get_guid(pb, &g); - gsize = get_le64(pb); - dprintf(s, "%08"PRIx64": ", url_ftell(pb) - 24); - print_guid(&g); - dprintf(s, " size=0x%"PRIx64"\n", gsize); - if (!memcmp(&g, &data_header, sizeof(GUID))) { - asf->data_object_offset = url_ftell(pb); - // if not streaming, gsize is not unlimited (how?), and there is enough space in the file.. - if (!(asf->hdr.flags & 0x01) && gsize >= 100) { - asf->data_object_size = gsize - 24; - } else { - asf->data_object_size = (uint64_t)-1; - } - break; - } - if (gsize < 24) - return -1; - if (!memcmp(&g, &file_header, sizeof(GUID))) { - get_guid(pb, &asf->hdr.guid); - asf->hdr.file_size = get_le64(pb); - asf->hdr.create_time = get_le64(pb); - asf->nb_packets = get_le64(pb); - asf->hdr.play_time = get_le64(pb); - asf->hdr.send_time = get_le64(pb); - asf->hdr.preroll = get_le32(pb); - asf->hdr.ignore = get_le32(pb); - asf->hdr.flags = get_le32(pb); - asf->hdr.min_pktsize = get_le32(pb); - asf->hdr.max_pktsize = get_le32(pb); - asf->hdr.max_bitrate = get_le32(pb); - asf->packet_size = asf->hdr.max_pktsize; - } else if (!memcmp(&g, &stream_header, sizeof(GUID))) { - enum CodecType type; - int type_specific_size, sizeX; - uint64_t total_size; - unsigned int tag1; - int64_t pos1, pos2, start_time; - int test_for_ext_stream_audio, is_dvr_ms_audio=0; - - pos1 = url_ftell(pb); - - st = av_new_stream(s, 0); - if (!st) - return AVERROR(ENOMEM); - av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */ - asf_st = av_mallocz(sizeof(ASFStream)); - if (!asf_st) - return AVERROR(ENOMEM); - st->priv_data = asf_st; - start_time = asf->hdr.preroll; - - if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming... - st->duration = asf->hdr.send_time / - (10000000 / 1000) - start_time; - } - get_guid(pb, &g); - - test_for_ext_stream_audio = 0; - if (!memcmp(&g, &audio_stream, sizeof(GUID))) { - type = CODEC_TYPE_AUDIO; - } else if (!memcmp(&g, &video_stream, sizeof(GUID))) { - type = CODEC_TYPE_VIDEO; - } else if (!memcmp(&g, &command_stream, sizeof(GUID))) { - type = CODEC_TYPE_DATA; - } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) { - test_for_ext_stream_audio = 1; - type = CODEC_TYPE_UNKNOWN; - } else { - return -1; - } - get_guid(pb, &g); - total_size = get_le64(pb); - type_specific_size = get_le32(pb); - get_le32(pb); - st->id = get_le16(pb) & 0x7f; /* stream id */ - // mapping of asf ID to AV stream ID; - asf->asfid2avid[st->id] = s->nb_streams - 1; - - get_le32(pb); - - if (test_for_ext_stream_audio) { - get_guid(pb, &g); - if (!memcmp(&g, &ext_stream_audio_stream, sizeof(GUID))) { - type = CODEC_TYPE_AUDIO; - is_dvr_ms_audio=1; - get_guid(pb, &g); - get_le32(pb); - get_le32(pb); - get_le32(pb); - get_guid(pb, &g); - get_le32(pb); - } - } - - st->codec->codec_type = type; - if (type == CODEC_TYPE_AUDIO) { - get_wav_header(pb, st->codec, type_specific_size); - if (is_dvr_ms_audio) { - // codec_id and codec_tag are unreliable in dvr_ms - // files. Set them later by probing stream. - st->codec->codec_id = CODEC_ID_PROBE; - st->codec->codec_tag = 0; - } - if (st->codec->codec_id == CODEC_ID_AAC) { - st->need_parsing = AVSTREAM_PARSE_NONE; - } else { - st->need_parsing = AVSTREAM_PARSE_FULL; - } - /* We have to init the frame size at some point .... */ - pos2 = url_ftell(pb); - if (gsize >= (pos2 + 8 - pos1 + 24)) { - asf_st->ds_span = get_byte(pb); - asf_st->ds_packet_size = get_le16(pb); - asf_st->ds_chunk_size = get_le16(pb); - get_le16(pb); //ds_data_size - get_byte(pb); //ds_silence_data - } - //printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n", - // asf_st->ds_packet_size, asf_st->ds_chunk_size, - // asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data); - if (asf_st->ds_span > 1) { - if (!asf_st->ds_chunk_size - || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1) - || asf_st->ds_packet_size % asf_st->ds_chunk_size) - asf_st->ds_span = 0; // disable descrambling - } - switch (st->codec->codec_id) { - case CODEC_ID_MP3: - st->codec->frame_size = MPA_FRAME_SIZE; - break; - case CODEC_ID_PCM_S16LE: - case CODEC_ID_PCM_S16BE: - case CODEC_ID_PCM_U16LE: - case CODEC_ID_PCM_U16BE: - case CODEC_ID_PCM_S8: - case CODEC_ID_PCM_U8: - case CODEC_ID_PCM_ALAW: - case CODEC_ID_PCM_MULAW: - st->codec->frame_size = 1; - break; - default: - /* This is probably wrong, but it prevents a crash later */ - st->codec->frame_size = 1; - break; - } - } else if (type == CODEC_TYPE_VIDEO) { - get_le32(pb); - get_le32(pb); - get_byte(pb); - size = get_le16(pb); /* size */ - sizeX= get_le32(pb); /* size */ - st->codec->width = get_le32(pb); - st->codec->height = get_le32(pb); - /* not available for asf */ - get_le16(pb); /* panes */ - st->codec->bits_per_coded_sample = get_le16(pb); /* depth */ - tag1 = get_le32(pb); - url_fskip(pb, 20); -// av_log(s, AV_LOG_DEBUG, "size:%d tsize:%d sizeX:%d\n", size, total_size, sizeX); - size= sizeX; - if (size > 40) { - st->codec->extradata_size = size - 40; - st->codec->extradata = av_mallocz(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); - get_buffer(pb, st->codec->extradata, st->codec->extradata_size); - } - - /* Extract palette from extradata if bpp <= 8 */ - /* This code assumes that extradata contains only palette */ - /* This is true for all paletted codecs implemented in ffmpeg */ - if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) { - st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl)); -#ifdef WORDS_BIGENDIAN - for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++) - st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]); -#else - memcpy(st->codec->palctrl->palette, st->codec->extradata, - FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)); -#endif - st->codec->palctrl->palette_changed = 1; - } - - st->codec->codec_tag = tag1; - st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1); - if(tag1 == MKTAG('D', 'V', 'R', ' ')) - st->need_parsing = AVSTREAM_PARSE_FULL; - } - pos2 = url_ftell(pb); - url_fskip(pb, gsize - (pos2 - pos1 + 24)); - } else if (!memcmp(&g, &comment_header, sizeof(GUID))) { - int len1, len2, len3, len4, len5; - - len1 = get_le16(pb); - len2 = get_le16(pb); - len3 = get_le16(pb); - len4 = get_le16(pb); - len5 = get_le16(pb); - get_tag(s, "title" , 0, len1); - get_tag(s, "author" , 0, len2); - get_tag(s, "copyright", 0, len3); - get_tag(s, "comment" , 0, len4); - url_fskip(pb, len5); - } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) { - int stream_count = get_le16(pb); - int j; - -// av_log(s, AV_LOG_ERROR, "stream bitrate properties\n"); -// av_log(s, AV_LOG_ERROR, "streams %d\n", streams); - for(j = 0; j < stream_count; j++) { - int flags, bitrate, stream_id; - - flags= get_le16(pb); - bitrate= get_le32(pb); - stream_id= (flags & 0x7f); -// av_log(s, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate); - asf->stream_bitrates[stream_id]= bitrate; - } - } else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) { - int desc_count, i; - - desc_count = get_le16(pb); - for(i=0;i\n", i, stream_num, name_len, value_type, value_len, name); - value_num= get_le16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere - url_fskip(pb, value_len - 2); - - if(stream_num<128){ - if (!strcmp(name, "AspectRatioX")) dar[stream_num].num= value_num; - else if(!strcmp(name, "AspectRatioY")) dar[stream_num].den= value_num; - } - } - } else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) { - int ext_len, payload_ext_ct, stream_ct; - uint32_t ext_d, leak_rate, stream_num; - int64_t pos_ex_st; - pos_ex_st = url_ftell(pb); - - get_le64(pb); // starttime - get_le64(pb); // endtime - leak_rate = get_le32(pb); // leak-datarate - get_le32(pb); // bucket-datasize - get_le32(pb); // init-bucket-fullness - get_le32(pb); // alt-leak-datarate - get_le32(pb); // alt-bucket-datasize - get_le32(pb); // alt-init-bucket-fullness - get_le32(pb); // max-object-size - get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved) - stream_num = get_le16(pb); // stream-num - get_le16(pb); // stream-language-id-index - get_le64(pb); // avg frametime in 100ns units - stream_ct = get_le16(pb); //stream-name-count - payload_ext_ct = get_le16(pb); //payload-extension-system-count - - if (stream_num < 128) - bitrate[stream_num] = leak_rate; - - for (i=0; i 0) { - v1 = get_byte(pb); - if ((q - tag) < sizeof(tag) - 1) - *q++ = v1; - len--; - } - *q = '\0'; - } -#endif - } else if (url_feof(pb)) { - return -1; - } else { - url_fseek(pb, gsize - 24, SEEK_CUR); - } - } - get_guid(pb, &g); - get_le64(pb); - get_byte(pb); - get_byte(pb); - if (url_feof(pb)) - return -1; - asf->data_offset = url_ftell(pb); - asf->packet_size_left = 0; - - - for(i=0; i<128; i++){ - int stream_num= asf->asfid2avid[i]; - if(stream_num>=0){ - AVStream *st = s->streams[stream_num]; - if (!st->codec->bit_rate) - st->codec->bit_rate = bitrate[i]; - if (dar[i].num > 0 && dar[i].den > 0) - av_reduce(&st->sample_aspect_ratio.num, - &st->sample_aspect_ratio.den, - dar[i].num, dar[i].den, INT_MAX); -//av_log(s, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den); - } - } - - return 0; -} - -#define DO_2BITS(bits, var, defval) \ - switch (bits & 3) \ - { \ - case 3: var = get_le32(pb); rsize += 4; break; \ - case 2: var = get_le16(pb); rsize += 2; break; \ - case 1: var = get_byte(pb); rsize++; break; \ - default: var = defval; break; \ - } - -int ff_asf_get_packet(AVFormatContext *s, ByteIOContext *pb) -{ - ASFContext *asf = s->priv_data; - uint32_t packet_length, padsize; - int rsize = 8; - int c, d, e, off; - - off= (url_ftell(pb) - s->data_offset) % asf->packet_size + 3; - - c=d=e=-1; - while(off-- > 0){ - c=d; d=e; - e= get_byte(pb); - if(c == 0x82 && !d && !e) - break; - } - - if (c != 0x82) { - if (!url_feof(pb)) - av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb)); - } - if ((c & 0x8f) == 0x82) { - if (d || e) { - if (!url_feof(pb)) - av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n"); - return -1; - } - c= get_byte(pb); - d= get_byte(pb); - rsize+=3; - }else{ - url_fseek(pb, -1, SEEK_CUR); //FIXME - } - - asf->packet_flags = c; - asf->packet_property = d; - - DO_2BITS(asf->packet_flags >> 5, packet_length, asf->packet_size); - DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored - DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length - - //the following checks prevent overflows and infinite loops - if(packet_length >= (1U<<29)){ - av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb)); - return -1; - } - if(padsize >= packet_length){ - av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb)); - return -1; - } - - asf->packet_timestamp = get_le32(pb); - get_le16(pb); /* duration */ - // rsize has at least 11 bytes which have to be present - - if (asf->packet_flags & 0x01) { - asf->packet_segsizetype = get_byte(pb); rsize++; - asf->packet_segments = asf->packet_segsizetype & 0x3f; - } else { - asf->packet_segments = 1; - asf->packet_segsizetype = 0x80; - } - asf->packet_size_left = packet_length - padsize - rsize; - if (packet_length < asf->hdr.min_pktsize) - padsize += asf->hdr.min_pktsize - packet_length; - asf->packet_padsize = padsize; - dprintf(s, "packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left); - return 0; -} - -/** - * - * @return <0 if error - */ -static int asf_read_frame_header(AVFormatContext *s, ByteIOContext *pb){ - ASFContext *asf = s->priv_data; - int rsize = 1; - int num = get_byte(pb); - int64_t ts0, ts1; - - asf->packet_segments--; - asf->packet_key_frame = num >> 7; - asf->stream_index = asf->asfid2avid[num & 0x7f]; - // sequence should be ignored! - DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0); - DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0); - DO_2BITS(asf->packet_property, asf->packet_replic_size, 0); -//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size); - if (asf->packet_replic_size >= 8) { - asf->packet_obj_size = get_le32(pb); - if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){ - av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n"); - return -1; - } - asf->packet_frag_timestamp = get_le32(pb); // timestamp - if(asf->packet_replic_size >= 8+38+4){ -// for(i=0; ipacket_replic_size-8; i++) -// av_log(s, AV_LOG_DEBUG, "%02X ",get_byte(pb)); -// av_log(s, AV_LOG_DEBUG, "\n"); - url_fskip(pb, 10); - ts0= get_le64(pb); - ts1= get_le64(pb); - url_fskip(pb, 12); - get_le32(pb); - url_fskip(pb, asf->packet_replic_size - 8 - 38 - 4); - if(ts0!= -1) asf->packet_frag_timestamp= ts0/10000; - else asf->packet_frag_timestamp= AV_NOPTS_VALUE; - }else - url_fskip(pb, asf->packet_replic_size - 8); - rsize += asf->packet_replic_size; // FIXME - check validity - } else if (asf->packet_replic_size==1){ - // multipacket - frag_offset is beginning timestamp - asf->packet_time_start = asf->packet_frag_offset; - asf->packet_frag_offset = 0; - asf->packet_frag_timestamp = asf->packet_timestamp; - - asf->packet_time_delta = get_byte(pb); - rsize++; - }else if(asf->packet_replic_size!=0){ - av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size); - return -1; - } - if (asf->packet_flags & 0x01) { - DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal - if(asf->packet_frag_size > asf->packet_size_left - rsize){ - av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid\n"); - return -1; - } - //printf("Fragsize %d\n", asf->packet_frag_size); - } else { - asf->packet_frag_size = asf->packet_size_left - rsize; - //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize); - } - if (asf->packet_replic_size == 1) { - asf->packet_multi_size = asf->packet_frag_size; - if (asf->packet_multi_size > asf->packet_size_left) - return -1; - } - asf->packet_size_left -= rsize; - //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize); - - return 0; -} - -int ff_asf_parse_packet(AVFormatContext *s, ByteIOContext *pb, AVPacket *pkt) -{ - ASFContext *asf = s->priv_data; - ASFStream *asf_st = 0; - for (;;) { - if(url_feof(pb)) - return AVERROR(EIO); - if (asf->packet_size_left < FRAME_HEADER_SIZE - || asf->packet_segments < 1) { - //asf->packet_size_left <= asf->packet_padsize) { - int ret = asf->packet_size_left + asf->packet_padsize; - //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb)); - assert(ret>=0); - /* fail safe */ - url_fskip(pb, ret); - - asf->packet_pos= url_ftell(pb); - if (asf->data_object_size != (uint64_t)-1 && - (asf->packet_pos - asf->data_object_offset >= asf->data_object_size)) - return AVERROR(EIO); /* Do not exceed the size of the data object */ - return 1; - } - if (asf->packet_time_start == 0) { - if(asf_read_frame_header(s, pb) < 0){ - asf->packet_segments= 0; - continue; - } - if (asf->stream_index < 0 - || s->streams[asf->stream_index]->discard >= AVDISCARD_ALL - || (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY) - ) { - asf->packet_time_start = 0; - /* unhandled packet (should not happen) */ - url_fskip(pb, asf->packet_frag_size); - asf->packet_size_left -= asf->packet_frag_size; - if(asf->stream_index < 0) - av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size); - continue; - } - asf->asf_st = s->streams[asf->stream_index]->priv_data; - } - asf_st = asf->asf_st; - - if (asf->packet_replic_size == 1) { - // frag_offset is here used as the beginning timestamp - asf->packet_frag_timestamp = asf->packet_time_start; - asf->packet_time_start += asf->packet_time_delta; - asf->packet_obj_size = asf->packet_frag_size = get_byte(pb); - asf->packet_size_left--; - asf->packet_multi_size--; - if (asf->packet_multi_size < asf->packet_obj_size) - { - asf->packet_time_start = 0; - url_fskip(pb, asf->packet_multi_size); - asf->packet_size_left -= asf->packet_multi_size; - continue; - } - asf->packet_multi_size -= asf->packet_obj_size; - //printf("COMPRESS size %d %d %d ms:%d\n", asf->packet_obj_size, asf->packet_frag_timestamp, asf->packet_size_left, asf->packet_multi_size); - } - if( /*asf->packet_frag_size == asf->packet_obj_size*/ - asf_st->frag_offset + asf->packet_frag_size <= asf_st->pkt.size - && asf_st->frag_offset + asf->packet_frag_size > asf->packet_obj_size){ - av_log(s, AV_LOG_INFO, "ignoring invalid packet_obj_size (%d %d %d %d)\n", - asf_st->frag_offset, asf->packet_frag_size, - asf->packet_obj_size, asf_st->pkt.size); - asf->packet_obj_size= asf_st->pkt.size; - } - - if ( asf_st->pkt.size != asf->packet_obj_size - || asf_st->frag_offset + asf->packet_frag_size > asf_st->pkt.size) { //FIXME is this condition sufficient? - if(asf_st->pkt.data){ - av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size); - asf_st->frag_offset = 0; - av_free_packet(&asf_st->pkt); - } - /* new packet */ - av_new_packet(&asf_st->pkt, asf->packet_obj_size); - asf_st->seq = asf->packet_seq; - asf_st->pkt.dts = asf->packet_frag_timestamp; - asf_st->pkt.stream_index = asf->stream_index; - asf_st->pkt.pos = - asf_st->packet_pos= asf->packet_pos; -//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n", -//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY, -//s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size); - if (s->streams[asf->stream_index]->codec->codec_type == CODEC_TYPE_AUDIO) - asf->packet_key_frame = 1; - if (asf->packet_key_frame) - asf_st->pkt.flags |= PKT_FLAG_KEY; - } - - /* read data */ - //printf("READ PACKET s:%d os:%d o:%d,%d l:%d DATA:%p\n", - // asf->packet_size, asf_st->pkt.size, asf->packet_frag_offset, - // asf_st->frag_offset, asf->packet_frag_size, asf_st->pkt.data); - asf->packet_size_left -= asf->packet_frag_size; - if (asf->packet_size_left < 0) - continue; - - if( asf->packet_frag_offset >= asf_st->pkt.size - || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){ - av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n", - asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size); - continue; - } - - get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset, - asf->packet_frag_size); - if (s->key && s->keylen == 20) - ff_asfcrypt_dec(s->key, asf_st->pkt.data + asf->packet_frag_offset, - asf->packet_frag_size); - asf_st->frag_offset += asf->packet_frag_size; - /* test if whole packet is read */ - if (asf_st->frag_offset == asf_st->pkt.size) { - //workaround for macroshit radio DVR-MS files - if( s->streams[asf->stream_index]->codec->codec_id == CODEC_ID_MPEG2VIDEO - && asf_st->pkt.size > 100){ - int i; - for(i=0; ipkt.size && !asf_st->pkt.data[i]; i++); - if(i == asf_st->pkt.size){ - av_log(s, AV_LOG_DEBUG, "discarding ms fart\n"); - asf_st->frag_offset = 0; - av_free_packet(&asf_st->pkt); - continue; - } - } - - /* return packet */ - if (asf_st->ds_span > 1) { - if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){ - av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span (%d %d %d)\n", asf_st->pkt.size, asf_st->ds_packet_size, asf_st->ds_span); - }else{ - /* packet descrambling */ - uint8_t *newdata = av_malloc(asf_st->pkt.size); - if (newdata) { - int offset = 0; - while (offset < asf_st->pkt.size) { - int off = offset / asf_st->ds_chunk_size; - int row = off / asf_st->ds_span; - int col = off % asf_st->ds_span; - int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size; - //printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx); - - assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size); - assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size); - memcpy(newdata + offset, - asf_st->pkt.data + idx * asf_st->ds_chunk_size, - asf_st->ds_chunk_size); - offset += asf_st->ds_chunk_size; - } - av_free(asf_st->pkt.data); - asf_st->pkt.data = newdata; - } - } - } - asf_st->frag_offset = 0; - *pkt= asf_st->pkt; - //printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size); - asf_st->pkt.size = 0; - asf_st->pkt.data = 0; - break; // packet completed - } - } - return 0; -} - -static int asf_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - ASFContext *asf = s->priv_data; - - for (;;) { - int ret; - - /* parse cached packets, if any */ - if ((ret = ff_asf_parse_packet(s, s->pb, pkt)) <= 0) - return ret; - if ((ret = ff_asf_get_packet(s, s->pb)) < 0) - assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1); - asf->packet_time_start = 0; - } - - return 0; -} - -// Added to support seeking after packets have been read -// If information is not reset, read_packet fails due to -// leftover information from previous reads -static void asf_reset_header(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - ASFStream *asf_st; - int i; - - asf->packet_nb_frames = 0; - asf->packet_size_left = 0; - asf->packet_segments = 0; - asf->packet_flags = 0; - asf->packet_property = 0; - asf->packet_timestamp = 0; - asf->packet_segsizetype = 0; - asf->packet_segments = 0; - asf->packet_seq = 0; - asf->packet_replic_size = 0; - asf->packet_key_frame = 0; - asf->packet_padsize = 0; - asf->packet_frag_offset = 0; - asf->packet_frag_size = 0; - asf->packet_frag_timestamp = 0; - asf->packet_multi_size = 0; - asf->packet_obj_size = 0; - asf->packet_time_delta = 0; - asf->packet_time_start = 0; - - for(i=0; inb_streams; i++){ - asf_st= s->streams[i]->priv_data; - av_free_packet(&asf_st->pkt); - asf_st->frag_offset=0; - asf_st->seq=0; - } - asf->asf_st= NULL; -} - -static int asf_read_close(AVFormatContext *s) -{ - int i; - - asf_reset_header(s); - for(i=0;inb_streams;i++) { - AVStream *st = s->streams[i]; - av_free(st->codec->palctrl); - } - return 0; -} - -static int64_t asf_read_pts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit) -{ - ASFContext *asf = s->priv_data; - AVPacket pkt1, *pkt = &pkt1; - ASFStream *asf_st; - int64_t pts; - int64_t pos= *ppos; - int i; - int64_t start_pos[s->nb_streams]; - - for(i=0; inb_streams; i++){ - start_pos[i]= pos; - } - - pos= (pos+asf->packet_size-1-s->data_offset)/asf->packet_size*asf->packet_size+ s->data_offset; - *ppos= pos; - url_fseek(s->pb, pos, SEEK_SET); - -//printf("asf_read_pts\n"); - asf_reset_header(s); - for(;;){ - if (av_read_frame(s, pkt) < 0){ - av_log(s, AV_LOG_INFO, "asf_read_pts failed\n"); - return AV_NOPTS_VALUE; - } - - pts= pkt->pts; - - av_free_packet(pkt); - if(pkt->flags&PKT_FLAG_KEY){ - i= pkt->stream_index; - - asf_st= s->streams[i]->priv_data; - -// assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0); - pos= asf_st->packet_pos; - - av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME); - start_pos[i]= asf_st->packet_pos + 1; - - if(pkt->stream_index == stream_index) - break; - } - } - - *ppos= pos; -//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts); - - return pts; -} - -static void asf_build_simple_index(AVFormatContext *s, int stream_index) -{ - GUID g; - ASFContext *asf = s->priv_data; - int64_t gsize, itime; - int64_t pos, current_pos, index_pts; - int i; - int pct,ict; - - current_pos = url_ftell(s->pb); - - url_fseek(s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET); - get_guid(s->pb, &g); - if (!memcmp(&g, &index_guid, sizeof(GUID))) { - gsize = get_le64(s->pb); - get_guid(s->pb, &g); - itime=get_le64(s->pb); - pct=get_le32(s->pb); - ict=get_le32(s->pb); - av_log(s, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict); - - for (i=0;ipb); - int pktct =get_le16(s->pb); - av_log(s, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct); - - pos=s->data_offset + asf->packet_size*(int64_t)pktnum; - index_pts=av_rescale(itime, i, 10000); - - av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME); - } - asf->index_read= 1; - } - url_fseek(s->pb, current_pos, SEEK_SET); -} - -static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags) -{ - ASFContext *asf = s->priv_data; - AVStream *st = s->streams[stream_index]; - int64_t pos; - int index; - - if (asf->packet_size <= 0) - return -1; - - /* Try using the protocol's read_seek if available */ - if(s->pb) { - int ret = av_url_read_fseek(s->pb, stream_index, pts, flags); - if(ret >= 0) - asf_reset_header(s); - if (ret != AVERROR(ENOSYS)) - return ret; - } - - if (!asf->index_read) - asf_build_simple_index(s, stream_index); - - if(!(asf->index_read && st->index_entries)){ - if(av_seek_frame_binary(s, stream_index, pts, flags)<0) - return -1; - }else{ - index= av_index_search_timestamp(st, pts, flags); - if(index<0) - return -1; - - /* find the position */ - pos = st->index_entries[index].pos; - pts = st->index_entries[index].timestamp; - - // various attempts to find key frame have failed so far - // asf_reset_header(s); - // url_fseek(s->pb, pos, SEEK_SET); - // key_pos = pos; - // for(i=0;i<16;i++){ - // pos = url_ftell(s->pb); - // if (av_read_frame(s, &pkt) < 0){ - // av_log(s, AV_LOG_INFO, "seek failed\n"); - // return -1; - // } - // asf_st = s->streams[stream_index]->priv_data; - // pos += st->parser->frame_offset; - // - // if (pkt.size > b) { - // b = pkt.size; - // key_pos = pos; - // } - // - // av_free_packet(&pkt); - // } - - /* do the seek */ - av_log(s, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos); - url_fseek(s->pb, pos, SEEK_SET); - } - asf_reset_header(s); - return 0; -} - -AVInputFormat asf_demuxer = { - "asf", - NULL_IF_CONFIG_SMALL("ASF format"), - sizeof(ASFContext), - asf_probe, - asf_read_header, - asf_read_packet, - asf_read_close, - asf_read_seek, - asf_read_pts, -}; -- cgit v1.2.3