X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Frm.c;h=1f9cfe486dc3db444b37f86fe95edf5314ef0625;hb=2c07c1804831fa0ae6d494a63fdd10facfd6074b;hp=f0529d0438935be50dc8ce69bd23ee0cdd39b3de;hpb=3f05305d73aaf886051d0394466e4c50eb02da11;p=ffmpeg diff --git a/libavformat/rm.c b/libavformat/rm.c index f0529d04389..1f9cfe486dc 100644 --- a/libavformat/rm.c +++ b/libavformat/rm.c @@ -1,979 +1,47 @@ /* - * "Real" compatible mux and demux. - * Copyright (c) 2000, 2001 Fabrice Bellard. + * "Real" compatible muxer and demuxer common code. + * Copyright (c) 2009 Aurelien Jacobs * - * This library is free software; you can redistribute it and/or + * This file is part of Libav. + * + * Libav 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. + * version 2.1 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, + * Libav 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 + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include "avformat.h" - -/* in ms */ -#define BUFFER_DURATION 0 - -typedef struct { - int nb_packets; - int packet_total_size; - int packet_max_size; - /* codec related output */ - int bit_rate; - float frame_rate; - int nb_frames; /* current frame number */ - int total_frames; /* total number of frames */ - int num; - AVCodecContext *enc; -} StreamInfo; - -typedef struct { - StreamInfo streams[2]; - StreamInfo *audio_stream, *video_stream; - int data_pos; /* position of the data after the header */ - int nb_packets; - int old_format; - int current_stream; - int remaining_len; -} RMContext; - -#ifdef CONFIG_ENCODERS -static void put_str(ByteIOContext *s, const char *tag) -{ - put_be16(s,strlen(tag)); - while (*tag) { - put_byte(s, *tag++); - } -} - -static void put_str8(ByteIOContext *s, const char *tag) -{ - put_byte(s, strlen(tag)); - while (*tag) { - put_byte(s, *tag++); - } -} - -static void rv10_write_header(AVFormatContext *ctx, - int data_size, int index_pos) -{ - RMContext *rm = ctx->priv_data; - ByteIOContext *s = &ctx->pb; - StreamInfo *stream; - unsigned char *data_offset_ptr, *start_ptr; - const char *desc, *mimetype; - int nb_packets, packet_total_size, packet_max_size, size, packet_avg_size, i; - int bit_rate, v, duration, flags, data_pos; - - start_ptr = s->buf_ptr; - - put_tag(s, ".RMF"); - put_be32(s,18); /* header size */ - put_be16(s,0); - put_be32(s,0); - put_be32(s,4 + ctx->nb_streams); /* num headers */ - - put_tag(s,"PROP"); - put_be32(s, 50); - put_be16(s, 0); - packet_max_size = 0; - packet_total_size = 0; - nb_packets = 0; - bit_rate = 0; - duration = 0; - for(i=0;inb_streams;i++) { - StreamInfo *stream = &rm->streams[i]; - bit_rate += stream->bit_rate; - if (stream->packet_max_size > packet_max_size) - packet_max_size = stream->packet_max_size; - nb_packets += stream->nb_packets; - packet_total_size += stream->packet_total_size; - /* select maximum duration */ - v = (int) (1000.0 * (float)stream->total_frames / stream->frame_rate); - if (v > duration) - duration = v; - } - put_be32(s, bit_rate); /* max bit rate */ - put_be32(s, bit_rate); /* avg bit rate */ - put_be32(s, packet_max_size); /* max packet size */ - if (nb_packets > 0) - packet_avg_size = packet_total_size / nb_packets; - else - packet_avg_size = 0; - put_be32(s, packet_avg_size); /* avg packet size */ - put_be32(s, nb_packets); /* num packets */ - put_be32(s, duration); /* duration */ - put_be32(s, BUFFER_DURATION); /* preroll */ - put_be32(s, index_pos); /* index offset */ - /* computation of data the data offset */ - data_offset_ptr = s->buf_ptr; - put_be32(s, 0); /* data offset : will be patched after */ - put_be16(s, ctx->nb_streams); /* num streams */ - flags = 1 | 2; /* save allowed & perfect play */ - if (url_is_streamed(s)) - flags |= 4; /* live broadcast */ - put_be16(s, flags); - - /* comments */ - - put_tag(s,"CONT"); - size = strlen(ctx->title) + strlen(ctx->author) + strlen(ctx->copyright) + - strlen(ctx->comment) + 4 * 2 + 10; - put_be32(s,size); - put_be16(s,0); - put_str(s, ctx->title); - put_str(s, ctx->author); - put_str(s, ctx->copyright); - put_str(s, ctx->comment); - - for(i=0;inb_streams;i++) { - int codec_data_size; - - stream = &rm->streams[i]; - - if (stream->enc->codec_type == CODEC_TYPE_AUDIO) { - desc = "The Audio Stream"; - mimetype = "audio/x-pn-realaudio"; - codec_data_size = 73; - } else { - desc = "The Video Stream"; - mimetype = "video/x-pn-realvideo"; - codec_data_size = 34; - } - - put_tag(s,"MDPR"); - size = 10 + 9 * 4 + strlen(desc) + strlen(mimetype) + codec_data_size; - put_be32(s, size); - put_be16(s, 0); - - put_be16(s, i); /* stream number */ - put_be32(s, stream->bit_rate); /* max bit rate */ - put_be32(s, stream->bit_rate); /* avg bit rate */ - put_be32(s, stream->packet_max_size); /* max packet size */ - if (stream->nb_packets > 0) - packet_avg_size = stream->packet_total_size / - stream->nb_packets; - else - packet_avg_size = 0; - put_be32(s, packet_avg_size); /* avg packet size */ - put_be32(s, 0); /* start time */ - put_be32(s, BUFFER_DURATION); /* preroll */ - /* duration */ - if (url_is_streamed(s) || !stream->total_frames) - put_be32(s, (int)(3600 * 1000)); - else - put_be32(s, (int)(stream->total_frames * 1000 / stream->frame_rate)); - put_str8(s, desc); - put_str8(s, mimetype); - put_be32(s, codec_data_size); - - if (stream->enc->codec_type == CODEC_TYPE_AUDIO) { - int coded_frame_size, fscode, sample_rate; - sample_rate = stream->enc->sample_rate; - coded_frame_size = (stream->enc->bit_rate * - stream->enc->frame_size) / (8 * sample_rate); - /* audio codec info */ - put_tag(s, ".ra"); - put_byte(s, 0xfd); - put_be32(s, 0x00040000); /* version */ - put_tag(s, ".ra4"); - put_be32(s, 0x01b53530); /* stream length */ - put_be16(s, 4); /* unknown */ - put_be32(s, 0x39); /* header size */ - - switch(sample_rate) { - case 48000: - case 24000: - case 12000: - fscode = 1; - break; - default: - case 44100: - case 22050: - case 11025: - fscode = 2; - break; - case 32000: - case 16000: - case 8000: - fscode = 3; - } - put_be16(s, fscode); /* codec additional info, for AC3, seems - to be a frequency code */ - /* special hack to compensate rounding errors... */ - if (coded_frame_size == 557) - coded_frame_size--; - put_be32(s, coded_frame_size); /* frame length */ - put_be32(s, 0x51540); /* unknown */ - put_be32(s, 0x249f0); /* unknown */ - put_be32(s, 0x249f0); /* unknown */ - put_be16(s, 0x01); - /* frame length : seems to be very important */ - put_be16(s, coded_frame_size); - put_be32(s, 0); /* unknown */ - put_be16(s, stream->enc->sample_rate); /* sample rate */ - put_be32(s, 0x10); /* unknown */ - put_be16(s, stream->enc->channels); - put_str8(s, "Int0"); /* codec name */ - put_str8(s, "dnet"); /* codec name */ - put_be16(s, 0); /* title length */ - put_be16(s, 0); /* author length */ - put_be16(s, 0); /* copyright length */ - put_byte(s, 0); /* end of header */ - } else { - /* video codec info */ - put_be32(s,34); /* size */ - if(stream->enc->codec_id == CODEC_ID_RV10) - put_tag(s,"VIDORV10"); - else - put_tag(s,"VIDORV20"); - put_be16(s, stream->enc->width); - put_be16(s, stream->enc->height); - put_be16(s, (int) stream->frame_rate); /* frames per seconds ? */ - put_be32(s,0); /* unknown meaning */ - put_be16(s, (int) stream->frame_rate); /* unknown meaning */ - put_be32(s,0); /* unknown meaning */ - put_be16(s, 8); /* unknown meaning */ - /* Seems to be the codec version: only use basic H263. The next - versions seems to add a diffential DC coding as in - MPEG... nothing new under the sun */ - if(stream->enc->codec_id == CODEC_ID_RV10) - put_be32(s,0x10000000); - else - put_be32(s,0x20103001); - //put_be32(s,0x10003000); - } - } - - /* patch data offset field */ - data_pos = s->buf_ptr - start_ptr; - rm->data_pos = data_pos; - data_offset_ptr[0] = data_pos >> 24; - data_offset_ptr[1] = data_pos >> 16; - data_offset_ptr[2] = data_pos >> 8; - data_offset_ptr[3] = data_pos; - - /* data stream */ - put_tag(s,"DATA"); - put_be32(s,data_size + 10 + 8); - put_be16(s,0); - - put_be32(s, nb_packets); /* number of packets */ - put_be32(s,0); /* next data header */ -} - -static void write_packet_header(AVFormatContext *ctx, StreamInfo *stream, - int length, int key_frame) -{ - int timestamp; - ByteIOContext *s = &ctx->pb; - - stream->nb_packets++; - stream->packet_total_size += length; - if (length > stream->packet_max_size) - stream->packet_max_size = length; - - put_be16(s,0); /* version */ - put_be16(s,length + 12); - put_be16(s, stream->num); /* stream number */ - timestamp = (1000 * (float)stream->nb_frames) / stream->frame_rate; - put_be32(s, timestamp); /* timestamp */ - put_byte(s, 0); /* reserved */ - put_byte(s, key_frame ? 2 : 0); /* flags */ -} - -static int rm_write_header(AVFormatContext *s) -{ - RMContext *rm = s->priv_data; - StreamInfo *stream; - int n; - AVCodecContext *codec; - - for(n=0;nnb_streams;n++) { - s->streams[n]->id = n; - codec = &s->streams[n]->codec; - stream = &rm->streams[n]; - memset(stream, 0, sizeof(StreamInfo)); - stream->num = n; - stream->bit_rate = codec->bit_rate; - stream->enc = codec; - - switch(codec->codec_type) { - case CODEC_TYPE_AUDIO: - rm->audio_stream = stream; - stream->frame_rate = (float)codec->sample_rate / (float)codec->frame_size; - /* XXX: dummy values */ - stream->packet_max_size = 1024; - stream->nb_packets = 0; - stream->total_frames = stream->nb_packets; - break; - case CODEC_TYPE_VIDEO: - rm->video_stream = stream; - stream->frame_rate = (float)codec->frame_rate / (float)codec->frame_rate_base; - /* XXX: dummy values */ - stream->packet_max_size = 4096; - stream->nb_packets = 0; - stream->total_frames = stream->nb_packets; - break; - default: - return -1; - } - } - - rv10_write_header(s, 0, 0); - put_flush_packet(&s->pb); - return 0; -} - -static int rm_write_audio(AVFormatContext *s, const uint8_t *buf, int size, int flags) -{ - uint8_t *buf1; - RMContext *rm = s->priv_data; - ByteIOContext *pb = &s->pb; - StreamInfo *stream = rm->audio_stream; - int i; - - /* XXX: suppress this malloc */ - buf1= (uint8_t*) av_malloc( size * sizeof(uint8_t) ); - - write_packet_header(s, stream, size, !!(flags & PKT_FLAG_KEY)); - - /* for AC3, the words seems to be reversed */ - for(i=0;inb_frames++; - av_free(buf1); - return 0; -} - -static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int flags) -{ - RMContext *rm = s->priv_data; - ByteIOContext *pb = &s->pb; - StreamInfo *stream = rm->video_stream; - int key_frame = !!(flags & PKT_FLAG_KEY); - - /* XXX: this is incorrect: should be a parameter */ - - /* Well, I spent some time finding the meaning of these bits. I am - not sure I understood everything, but it works !! */ -#if 1 - write_packet_header(s, stream, size + 7, key_frame); - /* bit 7: '1' if final packet of a frame converted in several packets */ - put_byte(pb, 0x81); - /* bit 7: '1' if I frame. bits 6..0 : sequence number in current - frame starting from 1 */ - if (key_frame) { - put_byte(pb, 0x81); - } else { - put_byte(pb, 0x01); - } - put_be16(pb, 0x4000 + (size)); /* total frame size */ - put_be16(pb, 0x4000 + (size)); /* offset from the start or the end */ -#else - /* full frame */ - write_packet_header(s, size + 6); - put_byte(pb, 0xc0); - put_be16(pb, 0x4000 + size); /* total frame size */ - put_be16(pb, 0x4000 + packet_number * 126); /* position in stream */ -#endif - put_byte(pb, stream->nb_frames & 0xff); - - put_buffer(pb, buf, size); - put_flush_packet(pb); - - stream->nb_frames++; - return 0; -} - -static int rm_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - if (s->streams[pkt->stream_index]->codec.codec_type == - CODEC_TYPE_AUDIO) - return rm_write_audio(s, pkt->data, pkt->size, pkt->flags); - else - return rm_write_video(s, pkt->data, pkt->size, pkt->flags); -} - -static int rm_write_trailer(AVFormatContext *s) -{ - RMContext *rm = s->priv_data; - int data_size, index_pos, i; - ByteIOContext *pb = &s->pb; - - if (!url_is_streamed(&s->pb)) { - /* end of file: finish to write header */ - index_pos = url_fseek(pb, 0, SEEK_CUR); - data_size = index_pos - rm->data_pos; - - /* index */ - put_tag(pb, "INDX"); - put_be32(pb, 10 + 10 * s->nb_streams); - put_be16(pb, 0); - - for(i=0;inb_streams;i++) { - put_be32(pb, 0); /* zero indices */ - put_be16(pb, i); /* stream number */ - put_be32(pb, 0); /* next index */ - } - /* undocumented end header */ - put_be32(pb, 0); - put_be32(pb, 0); - - url_fseek(pb, 0, SEEK_SET); - for(i=0;inb_streams;i++) - rm->streams[i].total_frames = rm->streams[i].nb_frames; - rv10_write_header(s, data_size, index_pos); - } else { - /* undocumented end header */ - put_be32(pb, 0); - put_be32(pb, 0); - } - put_flush_packet(pb); - return 0; -} -#endif //CONFIG_ENCODERS - -/***************************************************/ - -static void get_str(ByteIOContext *pb, char *buf, int buf_size) -{ - int len, i; - char *q; - - len = get_be16(pb); - q = buf; - for(i=0;ipb; - char buf[128]; - uint32_t version; - int i; - - /* ra type header */ - version = get_be32(pb); /* version */ - if (((version >> 16) & 0xff) == 3) { - /* very old version */ - for(i = 0; i < 14; i++) - get_byte(pb); - get_str8(pb, s->title, sizeof(s->title)); - get_str8(pb, s->author, sizeof(s->author)); - get_str8(pb, s->copyright, sizeof(s->copyright)); - get_str8(pb, s->comment, sizeof(s->comment)); - get_byte(pb); - get_str8(pb, buf, sizeof(buf)); - st->codec.sample_rate = 8000; - st->codec.channels = 1; - st->codec.codec_type = CODEC_TYPE_AUDIO; - st->codec.codec_id = CODEC_ID_RA_144; - } else { - /* old version (4) */ - get_be32(pb); /* .ra4 */ - get_be32(pb); - get_be16(pb); - get_be32(pb); /* header size */ - get_be16(pb); /* add codec info */ - get_be32(pb); /* coded frame size */ - get_be32(pb); /* ??? */ - get_be32(pb); /* ??? */ - get_be32(pb); /* ??? */ - get_be16(pb); /* 1 */ - get_be16(pb); /* coded frame size */ - get_be32(pb); - st->codec.sample_rate = get_be16(pb); - get_be32(pb); - st->codec.channels = get_be16(pb); - get_str8(pb, buf, sizeof(buf)); /* desc */ - get_str8(pb, buf, sizeof(buf)); /* desc */ - st->codec.codec_type = CODEC_TYPE_AUDIO; - if (!strcmp(buf, "dnet")) { - st->codec.codec_id = CODEC_ID_AC3; - } else { - st->codec.codec_id = CODEC_ID_NONE; - pstrcpy(st->codec.codec_name, sizeof(st->codec.codec_name), - buf); - } - if (read_all) { - get_byte(pb); - get_byte(pb); - get_byte(pb); - - get_str8(pb, s->title, sizeof(s->title)); - get_str8(pb, s->author, sizeof(s->author)); - get_str8(pb, s->copyright, sizeof(s->copyright)); - get_str8(pb, s->comment, sizeof(s->comment)); - } - } -} - -static int rm_read_header_old(AVFormatContext *s, AVFormatParameters *ap) -{ - RMContext *rm = s->priv_data; - AVStream *st; - - rm->old_format = 1; - st = av_new_stream(s, 0); - if (!st) - goto fail; - rm_read_audio_stream_info(s, st, 1); - return 0; - fail: - return -1; -} - -static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap) -{ - RMContext *rm = s->priv_data; - AVStream *st; - ByteIOContext *pb = &s->pb; - unsigned int tag, v; - int tag_size, size, codec_data_size, i; - int64_t codec_pos; - unsigned int h263_hack_version, start_time, duration; - char buf[128]; - int flags = 0; - - tag = get_le32(pb); - if (tag == MKTAG('.', 'r', 'a', 0xfd)) { - /* very old .ra format */ - return rm_read_header_old(s, ap); - } else if (tag != MKTAG('.', 'R', 'M', 'F')) { - return AVERROR_IO; - } - - get_be32(pb); /* header size */ - get_be16(pb); - get_be32(pb); - get_be32(pb); /* number of headers */ - - for(;;) { - if (url_feof(pb)) - goto fail; - tag = get_le32(pb); - tag_size = get_be32(pb); - get_be16(pb); -#if 0 - printf("tag=%c%c%c%c (%08x) size=%d\n", - (tag) & 0xff, - (tag >> 8) & 0xff, - (tag >> 16) & 0xff, - (tag >> 24) & 0xff, - tag, - tag_size); -#endif - if (tag_size < 10) - goto fail; - switch(tag) { - case MKTAG('P', 'R', 'O', 'P'): - /* file header */ - get_be32(pb); /* max bit rate */ - get_be32(pb); /* avg bit rate */ - get_be32(pb); /* max packet size */ - get_be32(pb); /* avg packet size */ - get_be32(pb); /* nb packets */ - get_be32(pb); /* duration */ - get_be32(pb); /* preroll */ - get_be32(pb); /* index offset */ - get_be32(pb); /* data offset */ - get_be16(pb); /* nb streams */ - flags = get_be16(pb); /* flags */ - break; - case MKTAG('C', 'O', 'N', 'T'): - get_str(pb, s->title, sizeof(s->title)); - get_str(pb, s->author, sizeof(s->author)); - get_str(pb, s->copyright, sizeof(s->copyright)); - get_str(pb, s->comment, sizeof(s->comment)); - break; - case MKTAG('M', 'D', 'P', 'R'): - st = av_new_stream(s, 0); - if (!st) - goto fail; - st->id = get_be16(pb); - get_be32(pb); /* max bit rate */ - st->codec.bit_rate = get_be32(pb); /* bit rate */ - get_be32(pb); /* max packet size */ - get_be32(pb); /* avg packet size */ - start_time = get_be32(pb); /* start time */ - get_be32(pb); /* preroll */ - duration = get_be32(pb); /* duration */ - st->start_time = start_time * (AV_TIME_BASE / 1000); - st->duration = duration * (AV_TIME_BASE / 1000); - get_str8(pb, buf, sizeof(buf)); /* desc */ - get_str8(pb, buf, sizeof(buf)); /* mimetype */ - codec_data_size = get_be32(pb); - codec_pos = url_ftell(pb); - st->codec.codec_type = CODEC_TYPE_DATA; - av_set_pts_info(st, 64, 1, 1000); - - v = get_be32(pb); - if (v == MKTAG(0xfd, 'a', 'r', '.')) { - /* ra type header */ - rm_read_audio_stream_info(s, st, 0); - } else { - int fps, fps2; - if (get_le32(pb) != MKTAG('V', 'I', 'D', 'O')) { - fail1: - av_log(&st->codec, AV_LOG_ERROR, "Unsupported video codec\n"); - goto skip; - } - st->codec.codec_tag = get_le32(pb); -// av_log(NULL, AV_LOG_DEBUG, "%X %X\n", st->codec.codec_tag, MKTAG('R', 'V', '2', '0')); - if ( st->codec.codec_tag != MKTAG('R', 'V', '1', '0') - && st->codec.codec_tag != MKTAG('R', 'V', '2', '0') - && st->codec.codec_tag != MKTAG('R', 'V', '3', '0') - && st->codec.codec_tag != MKTAG('R', 'V', '4', '0')) - goto fail1; - st->codec.width = get_be16(pb); - st->codec.height = get_be16(pb); - st->codec.frame_rate_base= 1; - fps= get_be16(pb); - st->codec.codec_type = CODEC_TYPE_VIDEO; - get_be32(pb); - fps2= get_be16(pb); - get_be16(pb); - - st->codec.extradata_size= codec_data_size - (url_ftell(pb) - codec_pos); - st->codec.extradata= av_malloc(st->codec.extradata_size); - get_buffer(pb, st->codec.extradata, st->codec.extradata_size); - -// av_log(NULL, AV_LOG_DEBUG, "fps= %d fps2= %d\n", fps, fps2); - st->codec.frame_rate = fps * st->codec.frame_rate_base; - /* modification of h263 codec version (!) */ -#ifdef WORDS_BIGENDIAN - h263_hack_version = ((uint32_t*)st->codec.extradata)[1]; -#else - h263_hack_version = bswap_32(((uint32_t*)st->codec.extradata)[1]); -#endif - st->codec.sub_id = h263_hack_version; - switch((h263_hack_version>>28)){ - case 1: st->codec.codec_id = CODEC_ID_RV10; break; - case 2: st->codec.codec_id = CODEC_ID_RV20; break; - case 3: st->codec.codec_id = CODEC_ID_RV30; break; - case 4: st->codec.codec_id = CODEC_ID_RV40; break; - default: goto fail1; - } - } -skip: - /* skip codec info */ - size = url_ftell(pb) - codec_pos; - url_fskip(pb, codec_data_size - size); - break; - case MKTAG('D', 'A', 'T', 'A'): - goto header_end; - default: - /* unknown tag: skip it */ - url_fskip(pb, tag_size - 10); - break; - } - } - header_end: - rm->nb_packets = get_be32(pb); /* number of packets */ - if (!rm->nb_packets && (flags & 4)) - rm->nb_packets = 3600 * 25; - get_be32(pb); /* next data header */ - return 0; - - fail: - for(i=0;inb_streams;i++) { - av_free(s->streams[i]); - } - return AVERROR_IO; -} - -static int get_num(ByteIOContext *pb, int *len) -{ - int n, n1; - - n = get_be16(pb); - (*len)-=2; - if (n >= 0x4000) { - return n - 0x4000; - } else { - n1 = get_be16(pb); - (*len)-=2; - return (n << 16) | n1; - } -} - -/* multiple of 20 bytes for ra144 (ugly) */ -#define RAW_PACKET_SIZE 1000 - -static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){ - RMContext *rm = s->priv_data; - ByteIOContext *pb = &s->pb; - int len, num, res, i; - AVStream *st; - uint32_t state=0xFFFFFFFF; - - while(!url_feof(pb)){ - *pos= url_ftell(pb); - if(rm->remaining_len > 0){ - num= rm->current_stream; - len= rm->remaining_len; - *timestamp = AV_NOPTS_VALUE; - *flags= 0; - }else{ - state= (state<<8) + get_byte(pb); - - if(state == MKBETAG('I', 'N', 'D', 'X')){ - len = get_be16(pb) - 6; - if(len<0) - continue; - goto skip; - } - - if(state > (unsigned)0xFFFF || state < 12) - continue; - len=state; - state= 0xFFFFFFFF; - - num = get_be16(pb); - *timestamp = get_be32(pb); - res= get_byte(pb); /* reserved */ - *flags = get_byte(pb); /* flags */ - - - len -= 12; - } - for(i=0;inb_streams;i++) { - st = s->streams[i]; - if (num == st->id) - break; - } - if (i == s->nb_streams) { -skip: - /* skip packet if unknown number */ - url_fskip(pb, len); - rm->remaining_len -= len; - continue; - } - *stream_index= i; - - return len; - } - return -1; -} - -static int rm_read_packet(AVFormatContext *s, AVPacket *pkt) -{ - RMContext *rm = s->priv_data; - ByteIOContext *pb = &s->pb; - AVStream *st; - int i, len, tmp, j; - int64_t timestamp, pos; - uint8_t *ptr; - int flags; - - if (rm->old_format) { - /* just read raw bytes */ - len = RAW_PACKET_SIZE; - av_new_packet(pkt, len); - pkt->stream_index = 0; - len = get_buffer(pb, pkt->data, len); - if (len <= 0) { - av_free_packet(pkt); - return AVERROR_IO; - } - pkt->size = len; - st = s->streams[0]; - } else { - int seq=1; - - len=sync(s, ×tamp, &flags, &i, &pos); - if(len<0) - return AVERROR_IO; - st = s->streams[i]; - - if (st->codec.codec_type == CODEC_TYPE_VIDEO) { - int h, pic_num, len2, pos; - - h= get_byte(pb); len--; - if(!(h & 0x40)){ - seq = get_byte(pb); len--; - } - - if((h & 0xc0) == 0x40){ - len2= pos= 0; - }else{ - len2 = get_num(pb, &len); - pos = get_num(pb, &len); - } - /* picture number */ - pic_num= get_byte(pb); len--; - rm->remaining_len= len; - rm->current_stream= st->id; - -// av_log(NULL, AV_LOG_DEBUG, "%X len:%d pos:%d len2:%d pic_num:%d\n",h, len, pos, len2, pic_num); - if(len2 && len2remaining_len-= len; - } - - av_new_packet(pkt, len); - pkt->stream_index = i; - get_buffer(pb, pkt->data, len); - -#if 0 - if (st->codec.codec_type == CODEC_TYPE_VIDEO) { - if(st->codec.codec_id == CODEC_ID_RV20){ - int seq= 128*(pkt->data[2]&0x7F) + (pkt->data[3]>>1); - av_log(NULL, AV_LOG_DEBUG, "%d %Ld %d\n", timestamp, timestamp*512LL/25, seq); - - seq |= (timestamp&~0x3FFF); - if(seq - timestamp > 0x2000) seq -= 0x4000; - if(seq - timestamp < -0x2000) seq += 0x4000; - } - } -#endif - pkt->pts= timestamp; - if(flags&2){ - pkt->flags |= PKT_FLAG_KEY; - if((seq&0x7F) == 1) - av_add_index_entry(st, pos, timestamp, 0, AVINDEX_KEYFRAME); - } - } - - /* for AC3, needs to swap bytes */ - if (st->codec.codec_id == CODEC_ID_AC3) { - ptr = pkt->data; - for(j=0;jbuf_size <= 32) - return 0; - if ((p->buf[0] == '.' && p->buf[1] == 'R' && - p->buf[2] == 'M' && p->buf[3] == 'F' && - p->buf[4] == 0 && p->buf[5] == 0) || - (p->buf[0] == '.' && p->buf[1] == 'r' && - p->buf[2] == 'a' && p->buf[3] == 0xfd)) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static int64_t rm_read_dts(AVFormatContext *s, int stream_index, - int64_t *ppos, int64_t pos_limit) -{ - RMContext *rm = s->priv_data; - int64_t pos, dts; - int stream_index2, flags, len, h; - - pos = *ppos; - - if(rm->old_format) - return AV_NOPTS_VALUE; - - url_fseek(&s->pb, pos, SEEK_SET); - rm->remaining_len=0; - for(;;){ - int seq=1; - AVStream *st; - - len=sync(s, &dts, &flags, &stream_index2, &pos); - if(len<0) - return AV_NOPTS_VALUE; - - st = s->streams[stream_index2]; - if (st->codec.codec_type == CODEC_TYPE_VIDEO) { - h= get_byte(&s->pb); len--; - if(!(h & 0x40)){ - seq = get_byte(&s->pb); len--; - } - } - - if((flags&2) && (seq&0x7F) == 1){ -// av_log(s, AV_LOG_DEBUG, "%d %d-%d %Ld %d\n", flags, stream_index2, stream_index, dts, seq); - av_add_index_entry(st, pos, dts, 0, AVINDEX_KEYFRAME); - if(stream_index2 == stream_index) - break; - } - - url_fskip(&s->pb, len); - } - *ppos = pos; - return dts; -} - -static AVInputFormat rm_iformat = { - "rm", - "rm format", - sizeof(RMContext), - rm_probe, - rm_read_header, - rm_read_packet, - rm_read_close, - NULL, - rm_read_dts, +const char * const ff_rm_metadata[4] = { + "title", + "author", + "copyright", + "comment" }; -#ifdef CONFIG_ENCODERS -static AVOutputFormat rm_oformat = { - "rm", - "rm format", - "application/vnd.rn-realmedia", - "rm,ra", - sizeof(RMContext), - CODEC_ID_AC3, - CODEC_ID_RV10, - rm_write_header, - rm_write_packet, - rm_write_trailer, +const AVCodecTag ff_rm_codec_tags[] = { + { CODEC_ID_RV10, MKTAG('R','V','1','0') }, + { CODEC_ID_RV20, MKTAG('R','V','2','0') }, + { CODEC_ID_RV20, MKTAG('R','V','T','R') }, + { CODEC_ID_RV30, MKTAG('R','V','3','0') }, + { CODEC_ID_RV40, MKTAG('R','V','4','0') }, + { CODEC_ID_AC3, MKTAG('d','n','e','t') }, + { CODEC_ID_RA_144, MKTAG('l','p','c','J') }, + { CODEC_ID_RA_288, MKTAG('2','8','_','8') }, + { CODEC_ID_COOK, MKTAG('c','o','o','k') }, + { CODEC_ID_ATRAC3, MKTAG('a','t','r','c') }, + { CODEC_ID_SIPR, MKTAG('s','i','p','r') }, + { CODEC_ID_AAC, MKTAG('r','a','a','c') }, + { CODEC_ID_AAC, MKTAG('r','a','c','p') }, + { CODEC_ID_RALF, MKTAG('L','S','D',':') }, + { CODEC_ID_NONE }, }; -#endif //CONFIG_ENCODERS - -int rm_init(void) -{ - av_register_input_format(&rm_iformat); -#ifdef CONFIG_ENCODERS - av_register_output_format(&rm_oformat); -#endif //CONFIG_ENCODERS - return 0; -}