X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fasf.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fasf.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=c267df225f6c9a2c18e75c982891126de37af7be;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/asf.c b/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/asf.c deleted file mode 100644 index c267df2..0000000 --- a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/asf.c +++ /dev/null @@ -1,1288 +0,0 @@ -/* - * ASF compatible encoder and decoder. - * Copyright (c) 2000, 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" -#include "mpegaudio.h" - -#define PACKET_SIZE 3200 -#define PACKET_HEADER_SIZE 12 -#define FRAME_HEADER_SIZE 17 - -typedef struct { - int num; - int seq; - /* use for reading */ - AVPacket pkt; - int frag_offset; - int timestamp; - int64_t duration; - - int ds_span; /* descrambling */ - int ds_packet_size; - int ds_chunk_size; - int ds_data_size; - int ds_silence_data; - -} ASFStream; - -typedef struct { - uint32_t v1; - uint16_t v2; - uint16_t v3; - uint8_t v4[8]; -} GUID; - -typedef struct { - GUID guid; // generated by client computer - uint64_t file_size; // in bytes - // invalid if broadcasting - uint64_t create_time; // time of creation, in 100-nanosecond units since 1.1.1601 - // invalid if broadcasting - uint64_t packets_count; // how many packets are there in the file - // invalid if broadcasting - uint64_t play_time; // play time, in 100-nanosecond units - // invalid if broadcasting - uint64_t send_time; // time to send file, in 100-nanosecond units - // invalid if broadcasting (could be ignored) - uint32_t preroll; // timestamp of the first packet, in milliseconds - // if nonzero - substract from time - uint32_t ignore; // preroll is 64bit - but let's just ignore it - uint32_t flags; // 0x01 - broadcast - // 0x02 - seekable - // rest is reserved should be 0 - uint32_t min_pktsize; // size of a data packet - // invalid if broadcasting - uint32_t max_pktsize; // shall be the same as for min_pktsize - // invalid if broadcasting - uint32_t max_bitrate; // bandwith of stream in bps - // should be the sum of bitrates of the - // individual media streams -} ASFMainHeader; - - -typedef struct { - int seqno; - int packet_size; - int is_streamed; - int asfid2avid[128]; /* conversion table from asf ID 2 AVStream ID */ - ASFStream streams[128]; /* it's max number and it's not that big */ - /* non streamed additonnal info */ - int64_t nb_packets; - int64_t duration; /* in 100ns units */ - /* packet filling */ - int packet_size_left; - int packet_timestamp_start; - int packet_timestamp_end; - int packet_nb_frames; - uint8_t packet_buf[PACKET_SIZE]; - ByteIOContext pb; - /* only for reading */ - uint64_t data_offset; /* begining of the first data packet */ - - ASFMainHeader hdr; - - int packet_flags; - int packet_property; - int packet_timestamp; - int packet_segsizetype; - int packet_segments; - int packet_seq; - int packet_replic_size; - int packet_key_frame; - int packet_padsize; - int packet_frag_offset; - int packet_frag_size; - int packet_frag_timestamp; - int packet_multi_size; - int packet_obj_size; - int packet_time_delta; - int packet_time_start; - - int stream_index; - ASFStream* asf_st; /* currently decoded stream */ -} ASFContext; - -static const GUID asf_header = { - 0x75B22630, 0x668E, 0x11CF, { 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C }, -}; - -static const GUID file_header = { - 0x8CABDCA1, 0xA947, 0x11CF, { 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, -}; - -static const GUID stream_header = { - 0xB7DC0791, 0xA9B7, 0x11CF, { 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }, -}; - -static const GUID audio_stream = { - 0xF8699E40, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }, -}; - -static const GUID audio_conceal_none = { - // 0x49f1a440, 0x4ece, 0x11d0, { 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 }, - // New value lifted from avifile - 0x20fb5700, 0x5b55, 0x11cf, { 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b }, -}; - -static const GUID video_stream = { - 0xBC19EFC0, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }, -}; - -static const GUID video_conceal_none = { - 0x20FB5700, 0x5B55, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B }, -}; - - -static const GUID comment_header = { - 0x75b22633, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c }, -}; - -static const GUID codec_comment_header = { - 0x86D15240, 0x311D, 0x11D0, { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 }, -}; -static const GUID codec_comment1_header = { - 0x86d15241, 0x311d, 0x11d0, { 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 }, -}; - -static const GUID data_header = { - 0x75b22636, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c }, -}; - -static const GUID index_guid = { - 0x33000890, 0xe5b1, 0x11cf, { 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb }, -}; - -static const GUID head1_guid = { - 0x5fbf03b5, 0xa92e, 0x11cf, { 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 }, -}; - -static const GUID head2_guid = { - 0xabd3d211, 0xa9ba, 0x11cf, { 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 }, -}; - -/* I am not a number !!! This GUID is the one found on the PC used to - generate the stream */ -static const GUID my_guid = { - 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 }, -}; - -static void put_guid(ByteIOContext *s, const GUID *g) -{ - int i; - - put_le32(s, g->v1); - put_le16(s, g->v2); - put_le16(s, g->v3); - for(i=0;i<8;i++) - put_byte(s, g->v4[i]); -} - -static void put_str16(ByteIOContext *s, const char *tag) -{ - int c; - - put_le16(s,strlen(tag) + 1); - for(;;) { - c = (uint8_t)*tag++; - put_le16(s, c); - if (c == '\0') - break; - } -} - -static void put_str16_nolen(ByteIOContext *s, const char *tag) -{ - int c; - - for(;;) { - c = (uint8_t)*tag++; - put_le16(s, c); - if (c == '\0') - break; - } -} - -static int64_t put_header(ByteIOContext *pb, const GUID *g) -{ - int64_t pos; - - pos = url_ftell(pb); - put_guid(pb, g); - put_le64(pb, 24); - return pos; -} - -/* update header size */ -static void end_header(ByteIOContext *pb, int64_t pos) -{ - int64_t pos1; - - pos1 = url_ftell(pb); - url_fseek(pb, pos + 16, SEEK_SET); - put_le64(pb, pos1 - pos); - url_fseek(pb, pos1, SEEK_SET); -} - -/* write an asf chunk (only used in streaming case) */ -static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags) -{ - ASFContext *asf = s->priv_data; - ByteIOContext *pb = &s->pb; - int length; - - length = payload_length + 8; - put_le16(pb, type); - put_le16(pb, length); - put_le32(pb, asf->seqno); - put_le16(pb, flags); /* unknown bytes */ - put_le16(pb, length); - asf->seqno++; -} - -/* convert from unix to windows time */ -static int64_t unix_to_file_time(int ti) -{ - int64_t t; - - t = ti * int64_t_C(10000000); - t += int64_t_C(116444736000000000); - return t; -} - -/* write the header (used two times if non streamed) */ -static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size) -{ - ASFContext *asf = s->priv_data; - ByteIOContext *pb = &s->pb; - int header_size, n, extra_size, extra_size2, wav_extra_size, file_time; - int has_title; - AVCodecContext *enc; - int64_t header_offset, cur_pos, hpos; - int bit_rate; - - has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]); - - bit_rate = 0; - for(n=0;nnb_streams;n++) { - enc = &s->streams[n]->codec; - - bit_rate += enc->bit_rate; - } - - if (asf->is_streamed) { - put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */ - } - - put_guid(pb, &asf_header); - put_le64(pb, -1); /* header length, will be patched after */ - put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */ - put_byte(pb, 1); /* ??? */ - put_byte(pb, 2); /* ??? */ - - /* file header */ - header_offset = url_ftell(pb); - hpos = put_header(pb, &file_header); - put_guid(pb, &my_guid); - put_le64(pb, file_size); - file_time = 0; - put_le64(pb, unix_to_file_time(file_time)); - put_le64(pb, asf->nb_packets); /* number of packets */ - put_le64(pb, asf->duration); /* end time stamp (in 100ns units) */ - put_le64(pb, asf->duration); /* duration (in 100ns units) */ - put_le32(pb, 0); /* start time stamp */ - put_le32(pb, 0); /* ??? */ - put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */ - put_le32(pb, asf->packet_size); /* packet size */ - put_le32(pb, asf->packet_size); /* packet size */ - put_le32(pb, bit_rate); /* Nominal data rate in bps */ - end_header(pb, hpos); - - /* unknown headers */ - hpos = put_header(pb, &head1_guid); - put_guid(pb, &head2_guid); - put_le32(pb, 6); - put_le16(pb, 0); - end_header(pb, hpos); - - /* title and other infos */ - if (has_title) { - hpos = put_header(pb, &comment_header); - put_le16(pb, 2 * (strlen(s->title) + 1)); - put_le16(pb, 2 * (strlen(s->author) + 1)); - put_le16(pb, 2 * (strlen(s->copyright) + 1)); - put_le16(pb, 2 * (strlen(s->comment) + 1)); - put_le16(pb, 0); - put_str16_nolen(pb, s->title); - put_str16_nolen(pb, s->author); - put_str16_nolen(pb, s->copyright); - put_str16_nolen(pb, s->comment); - end_header(pb, hpos); - } - - /* stream headers */ - for(n=0;nnb_streams;n++) { - int64_t es_pos; - // ASFStream *stream = &asf->streams[n]; - - enc = &s->streams[n]->codec; - asf->streams[n].num = n + 1; - asf->streams[n].seq = 0; - - switch(enc->codec_type) { - case CODEC_TYPE_AUDIO: - wav_extra_size = 0; - extra_size = 18 + wav_extra_size; - extra_size2 = 0; - break; - default: - case CODEC_TYPE_VIDEO: - wav_extra_size = 0; - extra_size = 0x33; - extra_size2 = 0; - break; - } - - hpos = put_header(pb, &stream_header); - if (enc->codec_type == CODEC_TYPE_AUDIO) { - put_guid(pb, &audio_stream); - put_guid(pb, &audio_conceal_none); - } else { - put_guid(pb, &video_stream); - put_guid(pb, &video_conceal_none); - } - put_le64(pb, 0); /* ??? */ - es_pos = url_ftell(pb); - put_le32(pb, extra_size); /* wav header len */ - put_le32(pb, extra_size2); /* additional data len */ - put_le16(pb, n + 1); /* stream number */ - put_le32(pb, 0); /* ??? */ - - if (enc->codec_type == CODEC_TYPE_AUDIO) { - /* WAVEFORMATEX header */ - int wavsize = put_wav_header(pb, enc); - - if (wavsize < 0) - return -1; - if (wavsize != extra_size) { - cur_pos = url_ftell(pb); - url_fseek(pb, es_pos, SEEK_SET); - put_le32(pb, wavsize); /* wav header len */ - url_fseek(pb, cur_pos, SEEK_SET); - } - } else { - put_le32(pb, enc->width); - put_le32(pb, enc->height); - put_byte(pb, 2); /* ??? */ - put_le16(pb, 40); /* size */ - - /* BITMAPINFOHEADER header */ - put_bmp_header(pb, enc, codec_bmp_tags, 1); - } - end_header(pb, hpos); - } - - /* media comments */ - - hpos = put_header(pb, &codec_comment_header); - put_guid(pb, &codec_comment1_header); - put_le32(pb, s->nb_streams); - for(n=0;nnb_streams;n++) { - AVCodec *p; - - enc = &s->streams[n]->codec; - p = avcodec_find_encoder(enc->codec_id); - - put_le16(pb, asf->streams[n].num); - put_str16(pb, p ? p->name : enc->codec_name); - put_le16(pb, 0); /* no parameters */ - - - /* id */ - if (enc->codec_type == CODEC_TYPE_AUDIO) { - put_le16(pb, 2); - if(!enc->codec_tag) - enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id); - if(!enc->codec_tag) - return -1; - put_le16(pb, enc->codec_tag); - } else { - put_le16(pb, 4); - if(!enc->codec_tag) - enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id); - if(!enc->codec_tag) - return -1; - put_le32(pb, enc->codec_tag); - } - } - end_header(pb, hpos); - - /* patch the header size fields */ - - cur_pos = url_ftell(pb); - header_size = cur_pos - header_offset; - if (asf->is_streamed) { - header_size += 8 + 30 + 50; - - url_fseek(pb, header_offset - 10 - 30, SEEK_SET); - put_le16(pb, header_size); - url_fseek(pb, header_offset - 2 - 30, SEEK_SET); - put_le16(pb, header_size); - - header_size -= 8 + 30 + 50; - } - header_size += 24 + 6; - url_fseek(pb, header_offset - 14, SEEK_SET); - put_le64(pb, header_size); - url_fseek(pb, cur_pos, SEEK_SET); - - /* movie chunk, followed by packets of packet_size */ - asf->data_offset = cur_pos; - put_guid(pb, &data_header); - put_le64(pb, data_chunk_size); - put_guid(pb, &my_guid); - put_le64(pb, asf->nb_packets); /* nb packets */ - put_byte(pb, 1); /* ??? */ - put_byte(pb, 1); /* ??? */ - return 0; -} - -static int asf_write_header(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - - av_set_pts_info(s, 32, 1, 1000); /* 32 bit pts in ms */ - - asf->packet_size = PACKET_SIZE; - asf->nb_packets = 0; - - if (asf_write_header1(s, 0, 50) < 0) { - //av_free(asf); - return -1; - } - - put_flush_packet(&s->pb); - - asf->packet_nb_frames = 0; - asf->packet_timestamp_start = -1; - asf->packet_timestamp_end = -1; - asf->packet_size_left = asf->packet_size - PACKET_HEADER_SIZE; - init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1, - NULL, NULL, NULL, NULL); - - return 0; -} - -static int asf_write_stream_header(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - - asf->is_streamed = 1; - - return asf_write_header(s); -} - -/* write a fixed size packet */ -static int put_packet(AVFormatContext *s, - unsigned int timestamp, unsigned int duration, - int nb_frames, int padsize) -{ - ASFContext *asf = s->priv_data; - ByteIOContext *pb = &s->pb; - int flags; - - if (asf->is_streamed) { - put_chunk(s, 0x4424, asf->packet_size, 0); - } - - put_byte(pb, 0x82); - put_le16(pb, 0); - - flags = 0x01; /* nb segments present */ - if (padsize > 0) { - if (padsize < 256) - flags |= 0x08; - else - flags |= 0x10; - } - put_byte(pb, flags); /* flags */ - put_byte(pb, 0x5d); - if (flags & 0x10) - put_le16(pb, padsize - 2); - if (flags & 0x08) - put_byte(pb, padsize - 1); - put_le32(pb, timestamp); - put_le16(pb, duration); - put_byte(pb, nb_frames | 0x80); - - return PACKET_HEADER_SIZE + ((flags & 0x18) >> 3); -} - -static void flush_packet(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - int hdr_size, ptr; - - hdr_size = put_packet(s, asf->packet_timestamp_start, - asf->packet_timestamp_end - asf->packet_timestamp_start, - asf->packet_nb_frames, asf->packet_size_left); - - /* Clear out the padding bytes */ - ptr = asf->packet_size - hdr_size - asf->packet_size_left; - memset(asf->packet_buf + ptr, 0, asf->packet_size_left); - - put_buffer(&s->pb, asf->packet_buf, asf->packet_size - hdr_size); - - put_flush_packet(&s->pb); - asf->nb_packets++; - asf->packet_nb_frames = 0; - asf->packet_timestamp_start = -1; - asf->packet_timestamp_end = -1; - asf->packet_size_left = asf->packet_size - PACKET_HEADER_SIZE; - init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1, - NULL, NULL, NULL, NULL); -} - -static void put_frame_header(AVFormatContext *s, ASFStream *stream, int timestamp, - int payload_size, int frag_offset, int frag_len) -{ - ASFContext *asf = s->priv_data; - ByteIOContext *pb = &asf->pb; - int val; - - val = stream->num; - if (s->streams[val - 1]->codec.coded_frame->key_frame /* && frag_offset == 0 */) - val |= 0x80; - put_byte(pb, val); - put_byte(pb, stream->seq); - put_le32(pb, frag_offset); /* fragment offset */ - put_byte(pb, 0x08); /* flags */ - put_le32(pb, payload_size); - put_le32(pb, timestamp); - put_le16(pb, frag_len); -} - - -/* Output a frame. We suppose that payload_size <= PACKET_SIZE. - - It is there that you understand that the ASF format is really - crap. They have misread the MPEG Systems spec ! - */ -static void put_frame(AVFormatContext *s, ASFStream *stream, int timestamp, - const uint8_t *buf, int payload_size) -{ - ASFContext *asf = s->priv_data; - int frag_pos, frag_len, frag_len1; - - frag_pos = 0; - while (frag_pos < payload_size) { - frag_len = payload_size - frag_pos; - frag_len1 = asf->packet_size_left - FRAME_HEADER_SIZE; - if (frag_len1 > 0) { - if (frag_len > frag_len1) - frag_len = frag_len1; - put_frame_header(s, stream, timestamp+1, payload_size, frag_pos, frag_len); - put_buffer(&asf->pb, buf, frag_len); - asf->packet_size_left -= (frag_len + FRAME_HEADER_SIZE); - asf->packet_timestamp_end = timestamp; - if (asf->packet_timestamp_start == -1) - asf->packet_timestamp_start = timestamp; - asf->packet_nb_frames++; - } else { - frag_len = 0; - } - frag_pos += frag_len; - buf += frag_len; - /* output the frame if filled */ - if (asf->packet_size_left <= FRAME_HEADER_SIZE) - flush_packet(s); - } - stream->seq++; -} - - -static int asf_write_packet(AVFormatContext *s, int stream_index, - const uint8_t *buf, int size, int64_t timestamp) -{ - ASFContext *asf = s->priv_data; - ASFStream *stream; - int64_t duration; - AVCodecContext *codec; - - codec = &s->streams[stream_index]->codec; - stream = &asf->streams[stream_index]; - - if (codec->codec_type == CODEC_TYPE_AUDIO) { - duration = (codec->frame_number * codec->frame_size * int64_t_C(10000000)) / - codec->sample_rate; - } else { - duration = av_rescale(codec->frame_number * codec->frame_rate_base, 10000000, codec->frame_rate); - } - if (duration > asf->duration) - asf->duration = duration; - - put_frame(s, stream, timestamp, buf, size); - return 0; -} - -static int asf_write_trailer(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - int64_t file_size; - - /* flush the current packet */ - if (asf->pb.buf_ptr > asf->pb.buffer) - flush_packet(s); - - if (asf->is_streamed) { - put_chunk(s, 0x4524, 0, 0); /* end of stream */ - } else { - /* rewrite an updated header */ - file_size = url_ftell(&s->pb); - url_fseek(&s->pb, 0, SEEK_SET); - asf_write_header1(s, file_size, file_size - asf->data_offset); - } - - put_flush_packet(&s->pb); - return 0; -} - -/**********************************/ -/* decoding */ - -//#define DEBUG - -#ifdef DEBUG -#define PRINT_IF_GUID(g,cmp) \ -if (!memcmp(g, &cmp, sizeof(GUID))) \ - printf("(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, 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 - printf("(GUID: unknown) "); - printf("0x%08x, 0x%04x, 0x%04x, {", g->v1, g->v2, g->v3); - for(i=0;i<8;i++) - printf(" 0x%02x,", g->v4[i]); - printf("}\n"); -} -#undef PRINT_IF_GUID(g,cmp) -#endif - -static void get_guid(ByteIOContext *s, GUID *g) -{ - int i; - - g->v1 = get_le32(s); - g->v2 = get_le16(s); - g->v3 = get_le16(s); - for(i=0;i<8;i++) - g->v4[i] = get_byte(s); -} - -#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) -{ - int c; - char *q; - - q = buf; - while (len > 0) { - c = get_le16(pb); - if ((q - buf) < buf_size - 1) - *q++ = c; - len-=2; - } - *q = '\0'; -} - -static int asf_probe(AVProbeData *pd) -{ - GUID g; - const unsigned char *p; - int i; - - /* check file header */ - if (pd->buf_size <= 32) - return 0; - p = pd->buf; - g.v1 = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); - p += 4; - g.v2 = p[0] | (p[1] << 8); - p += 2; - g.v3 = p[0] | (p[1] << 8); - p += 2; - for(i=0;i<8;i++) - g.v4[i] = *p++; - - if (!memcmp(&g, &asf_header, sizeof(GUID))) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -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; - - av_set_pts_info(s, 32, 1, 1000); /* 32 bit pts in ms */ - - get_guid(pb, &g); - if (memcmp(&g, &asf_header, sizeof(GUID))) - goto fail; - 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); -#ifdef DEBUG - printf("%08Lx: ", url_ftell(pb) - 24); - print_guid(&g); - printf(" size=0x%Lx\n", gsize); -#endif - if (gsize < 24) - goto fail; - 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->hdr.packets_count = 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; - asf->nb_packets = asf->hdr.packets_count; - } else if (!memcmp(&g, &stream_header, sizeof(GUID))) { - int type, total_size, type_specific_size; - unsigned int tag1; - int64_t pos1, pos2; - - pos1 = url_ftell(pb); - - st = av_new_stream(s, 0); - if (!st) - goto fail; - asf_st = av_mallocz(sizeof(ASFStream)); - if (!asf_st) - goto fail; - st->priv_data = asf_st; - st->start_time = asf->hdr.preroll / (10000000 / AV_TIME_BASE); - st->duration = (asf->hdr.send_time - asf->hdr.preroll) / - (10000000 / AV_TIME_BASE); - get_guid(pb, &g); - if (!memcmp(&g, &audio_stream, sizeof(GUID))) { - type = CODEC_TYPE_AUDIO; - } else if (!memcmp(&g, &video_stream, sizeof(GUID))) { - type = CODEC_TYPE_VIDEO; - } else { - goto fail; - } - 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); - st->codec.codec_type = type; - st->codec.frame_rate = 15 * s->pts_den / s->pts_num; // 15 fps default - if (type == CODEC_TYPE_AUDIO) { - get_wav_header(pb, &st->codec, type_specific_size); - /* 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); - asf_st->ds_data_size = get_le16(pb); - asf_st->ds_silence_data = get_byte(pb); - } - //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_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 { - get_le32(pb); - get_le32(pb); - get_byte(pb); - size = get_le16(pb); /* size */ - 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_sample = get_le16(pb); /* depth */ - tag1 = get_le32(pb); - url_fskip(pb, 20); - if (size > 40) { - st->codec.extradata_size = size - 40; - st->codec.extradata = av_mallocz(st->codec.extradata_size); - get_buffer(pb, st->codec.extradata, st->codec.extradata_size); - } - st->codec.codec_tag = tag1; - st->codec.codec_id = codec_get_id(codec_bmp_tags, tag1); - } - pos2 = url_ftell(pb); - url_fskip(pb, gsize - (pos2 - pos1 + 24)); - } else if (!memcmp(&g, &data_header, sizeof(GUID))) { - break; - } 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_str16_nolen(pb, len1, s->title, sizeof(s->title)); - get_str16_nolen(pb, len2, s->author, sizeof(s->author)); - get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright)); - get_str16_nolen(pb, len4, s->comment, sizeof(s->comment)); - url_fskip(pb, len5); -#if 0 - } else if (!memcmp(&g, &head1_guid, sizeof(GUID))) { - int v1, v2; - get_guid(pb, &g); - v1 = get_le32(pb); - v2 = get_le16(pb); - } else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) { - int len, v1, n, num; - char str[256], *q; - char tag[16]; - - get_guid(pb, &g); - print_guid(&g); - - n = get_le32(pb); - 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)) { - goto fail; - } 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)) - goto fail; - asf->data_offset = url_ftell(pb); - asf->packet_size_left = 0; - - return 0; - - fail: - for(i=0;inb_streams;i++) { - AVStream *st = s->streams[i]; - if (st) { - av_free(st->priv_data); - av_free(st->codec.extradata); - } - av_free(st); - } - return -1; -} - -#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; \ - } - -static int asf_get_packet(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - ByteIOContext *pb = &s->pb; - uint32_t packet_length, padsize; - int rsize = 11; - int c = get_byte(pb); - if (c != 0x82) { - if (!url_feof(pb)) - printf("ff asf bad header %x at:%lld\n", c, url_ftell(pb)); - return -EIO; - } - if ((c & 0x0f) == 2) { // always true for now - if (get_le16(pb) != 0) { - if (!url_feof(pb)) - printf("ff asf bad non zero\n"); - return -EIO; - } - } - - asf->packet_flags = get_byte(pb); - asf->packet_property = get_byte(pb); - - 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 - - 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; -#ifdef DEBUG - printf("packet: size=%d padsize=%d left=%d\n", asf->packet_size, asf->packet_padsize, asf->packet_size_left); -#endif - return 0; -} - -static int asf_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - ASFContext *asf = s->priv_data; - ASFStream *asf_st = 0; - ByteIOContext *pb = &s->pb; - //static int pc = 0; - for (;;) { - int rsize = 0; - 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:%Ld\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb)); - /* fail safe */ - url_fskip(pb, ret); - ret = asf_get_packet(s); - //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++); - if (ret < 0 || url_feof(pb)) - return -EIO; - asf->packet_time_start = 0; - continue; - } - if (asf->packet_time_start == 0) { - /* read frame header */ - int num = get_byte(pb); - asf->packet_segments--; - rsize++; - asf->packet_key_frame = (num & 0x80) >> 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); - - if (asf->packet_replic_size > 1) { - // it should be always at least 8 bytes - FIXME validate - asf->packet_obj_size = get_le32(pb); - asf->packet_frag_timestamp = get_le32(pb); // timestamp - if (asf->packet_replic_size > 8) - url_fskip(pb, asf->packet_replic_size - 8); - rsize += asf->packet_replic_size; // FIXME - check validity - } else { - // multipacket - frag_offset is begining timestamp - asf->packet_time_start = asf->packet_frag_offset; - asf->packet_frag_offset = 0; - asf->packet_frag_timestamp = asf->packet_timestamp; - - if (asf->packet_replic_size == 1) { - asf->packet_time_delta = get_byte(pb); - rsize++; - } - } - if (asf->packet_flags & 0x01) { - DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal -#undef DO_2BITS - //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) { - asf->packet_segments = 0; - continue; - } - } - asf->packet_size_left -= rsize; - //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize); - - if (asf->stream_index < 0) { - 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; - printf("ff asf skip %d %d\n", asf->packet_frag_size, num & 0x7f); - continue; - } - asf->asf_st = s->streams[asf->stream_index]->priv_data; - } - asf_st = asf->asf_st; - - if ((asf->packet_frag_offset != asf_st->frag_offset - || (asf->packet_frag_offset - && asf->packet_seq != asf_st->seq)) // seq should be ignored - ) { - /* cannot continue current packet: free it */ - // FIXME better check if packet was already allocated - printf("ff asf parser skips: %d - %d o:%d - %d %d %d fl:%d\n", - asf_st->pkt.size, - asf->packet_obj_size, - asf->packet_frag_offset, asf_st->frag_offset, - asf->packet_seq, asf_st->seq, asf->packet_frag_size); - if (asf_st->pkt.size) - av_free_packet(&asf_st->pkt); - asf_st->frag_offset = 0; - if (asf->packet_frag_offset != 0) { - url_fskip(pb, asf->packet_frag_size); - printf("ff asf parser skiping %db\n", asf->packet_frag_size); - asf->packet_size_left -= asf->packet_frag_size; - continue; - } - } - if (asf->packet_replic_size == 1) { - // frag_offset is here used as the begining 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_st->frag_offset == 0) { - /* new packet */ - av_new_packet(&asf_st->pkt, asf->packet_obj_size); - asf_st->seq = asf->packet_seq; - asf_st->pkt.pts = asf->packet_frag_timestamp - asf->hdr.preroll; - asf_st->pkt.stream_index = asf->stream_index; - 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; - get_buffer(pb, 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) { - /* return packet */ - if (asf_st->ds_span > 1) { - /* packet descrambling */ - char* 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); - 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; - memcpy(pkt, &asf_st->pkt, sizeof(AVPacket)); - //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_close(AVFormatContext *s) -{ - int i; - - 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 asf_read_seek(AVFormatContext *s, int64_t pts) -{ - printf("SEEK TO %lld", pts); - return -1; -} - -static AVInputFormat asf_iformat = { - "asf", - "asf format", - sizeof(ASFContext), - asf_probe, - asf_read_header, - asf_read_packet, - asf_read_close, - asf_read_seek, -}; - -static AVOutputFormat asf_oformat = { - "asf", - "asf format", - "video/x-ms-asf", - "asf,wmv", - sizeof(ASFContext), -#ifdef CONFIG_MP3LAME - CODEC_ID_MP3, -#else - CODEC_ID_MP2, -#endif - CODEC_ID_MSMPEG4V3, - asf_write_header, - asf_write_packet, - asf_write_trailer, -}; - -static AVOutputFormat asf_stream_oformat = { - "asf_stream", - "asf format", - "video/x-ms-asf", - "asf,wmv", - sizeof(ASFContext), -#ifdef CONFIG_MP3LAME - CODEC_ID_MP3, -#else - CODEC_ID_MP2, -#endif - CODEC_ID_MSMPEG4V3, - asf_write_stream_header, - asf_write_packet, - asf_write_trailer, -}; - -int asf_init(void) -{ - av_register_input_format(&asf_iformat); - av_register_output_format(&asf_oformat); - av_register_output_format(&asf_stream_oformat); - return 0; -}