/*
- * ASF compatible encoder and decoder.
+ * ASF compatible demuxer
* Copyright (c) 2000, 2001 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * 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 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,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
-#include "avi.h"
+#include "riff.h"
#include "mpegaudio.h"
+#include "asf.h"
+#include "common.h"
#undef NDEBUG
#include <assert.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;
-
- int packet_pos;
-
-} 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 packet_pos;
-
- 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 },
-};
+// Fix Me! FRAME_HEADER_SIZE may be different.
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 },
-};
-
-static const GUID extended_content_header = {
- 0xD2D0A440, 0xE307, 0x11D2, { 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50 },
+ 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
};
-/* 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 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
};
-
-#ifdef CONFIG_ENCODERS
-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;n<s->nb_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;n<s->nb_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;n<s->nb_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;
-}
-#endif //CONFIG_ENCODERS
-
/**********************************/
/* decoding */
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, 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
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]);
+ for(i=0;i<16;i++)
+ printf(" 0x%02x,", (*g)[i]);
printf("}\n");
}
-#undef PRINT_IF_GUID(g,cmp)
+#undef PRINT_IF_GUID
#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);
+ assert(sizeof(*g) == 16);
+ get_buffer(s, g, sizeof(*g));
}
#if 0
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;
+ 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)
{
- 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)))
+ 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 int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
ASFContext *asf = s->priv_data;
ASFStream *asf_st;
int size, i;
int64_t gsize;
+ AVRational dar[128];
- av_set_pts_info(s, 32, 1, 1000); /* 32 bit pts in ms */
+ memset(dar, 0, sizeof(dar));
get_guid(pb, &g);
if (memcmp(&g, &asf_header, sizeof(GUID)))
get_guid(pb, &g);
gsize = get_le64(pb);
#ifdef DEBUG
- printf("%08Lx: ", url_ftell(pb) - 24);
+ printf("%08"PRIx64": ", url_ftell(pb) - 24);
print_guid(&g);
- printf(" size=0x%Lx\n", gsize);
+ printf(" size=0x%"PRIx64"\n", gsize);
#endif
+ 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)
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;
+ asf->hdr.file_size = get_le64(pb);
+ asf->hdr.create_time = get_le64(pb);
+ asf->nb_packets = get_le64(pb);
+ asf->hdr.send_time = get_le64(pb);
+ asf->hdr.play_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))) {
- int type, total_size, type_specific_size;
+ int type, type_specific_size, sizeX;
+ uint64_t total_size;
unsigned int tag1;
int64_t pos1, pos2;
+ int test_for_ext_stream_audio, is_dvr_ms_audio=0;
pos1 = url_ftell(pb);
st = av_new_stream(s, 0);
if (!st)
goto fail;
+ av_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
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);
+ st->start_time = asf->hdr.preroll;
+ if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
+ st->duration = asf->hdr.send_time /
+ (10000000 / 1000) - st->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_UNKNOWN;
+ } else if (!memcmp(&g, &ext_stream_embed_stream_header, sizeof(GUID))) {
+ test_for_ext_stream_audio = 1;
+ type = CODEC_TYPE_UNKNOWN;
} else {
goto fail;
}
total_size = get_le64(pb);
type_specific_size = get_le32(pb);
get_le32(pb);
- st->id = get_le16(pb) & 0x7f; /* stream id */
+ 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;
- /* 1 fps default (XXX: put 0 fps instead) */
- st->codec.frame_rate = 1;
- st->codec.frame_rate_base = 1;
+
+ 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);
- st->need_parsing = 1;
- /* 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) {
+ 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_NONE;
+ st->codec->codec_tag = 0;
+ }
+ 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;
+ st->codec->frame_size = MPA_FRAME_SIZE;
break;
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U8:
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
- st->codec.frame_size = 1;
+ st->codec->frame_size = 1;
break;
default:
/* This is probably wrong, but it prevents a crash later */
- st->codec.frame_size = 1;
+ st->codec->frame_size = 1;
break;
}
- } else {
- get_le32(pb);
+ } else if (type == CODEC_TYPE_VIDEO) {
+ 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);
+ 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_sample = get_le16(pb); /* depth */
+ 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);
- }
+ url_fskip(pb, 20);
+// av_log(NULL, 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_sample <= 8)) {
- st->codec.palctrl = av_mallocz(sizeof(AVPaletteControl));
+ if (st->codec->extradata_size && (st->codec->bits_per_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]);
+ 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));
+ memcpy(st->codec->palctrl->palette, st->codec->extradata,
+ FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
#endif
- st->codec.palctrl->palette_changed = 1;
+ st->codec->palctrl->palette_changed = 1;
}
- st->codec.codec_tag = tag1;
- st->codec.codec_id = codec_get_id(codec_bmp_tags, tag1);
+ 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, &data_header, sizeof(GUID))) {
- break;
} else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
int len1, len2, len3, len4, len5;
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, 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);
+ get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
+ url_fskip(pb, len5);
+ } else if (!memcmp(&g, &stream_bitrate_guid, sizeof(GUID))) {
+ int stream_count = get_le16(pb);
+ int j;
+
+// av_log(NULL, AV_LOG_ERROR, "stream bitrate properties\n");
+// av_log(NULL, 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(NULL, AV_LOG_ERROR, "flags: 0x%x stream id %d, bitrate %d\n", flags, stream_id, bitrate);
+ asf->stream_bitrates[stream_id-1]= bitrate;
+ }
} else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
int desc_count, i;
desc_count = get_le16(pb);
for(i=0;i<desc_count;i++)
{
- int name_len,value_type,value_len,value_num = 0;
- char *name, *value;
+ int name_len,value_type,value_len;
+ uint64_t value_num = 0;
+ char name[1024];
name_len = get_le16(pb);
- name = (char *)av_mallocz(name_len);
- get_str16_nolen(pb, name_len, name, name_len);
+ get_str16_nolen(pb, name_len, name, sizeof(name));
value_type = get_le16(pb);
value_len = get_le16(pb);
if ((value_type == 0) || (value_type == 1)) // unicode or byte
{
- value = (char *)av_mallocz(value_len);
- get_str16_nolen(pb, value_len, value, value_len);
- if (strcmp(name,"WM/AlbumTitle")==0) { strcpy(s->album, value); }
- av_free(value);
+ if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
+ else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
+ else url_fskip(pb, value_len);
}
- if ((value_type >= 2) || (value_type <= 5)) // boolean or DWORD or QWORD or WORD
+ if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
{
- if (value_type==2) value_num = get_le32(pb);
- if (value_type==3) value_num = get_le32(pb);
- if (value_type==4) value_num = get_le64(pb);
- if (value_type==5) value_num = get_le16(pb);
- if (strcmp(name,"WM/Track")==0) s->track = value_num + 1;
- if (strcmp(name,"WM/TrackNumber")==0) s->track = value_num;
+ value_num= get_value(pb, value_type);
+ if (!strcmp(name,"WM/Track" )) s->track = value_num + 1;
+ if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
}
- av_free(name);
}
-#if 0
+ } else if (!memcmp(&g, &metadata_header, sizeof(GUID))) {
+ int n, stream_num, name_len, value_len, value_type, value_num;
+ n = get_le16(pb);
+
+ for(i=0;i<n;i++) {
+ char name[1024];
+
+ get_le16(pb); //lang_list_index
+ stream_num= get_le16(pb);
+ name_len= get_le16(pb);
+ value_type= get_le16(pb);
+ value_len= get_le32(pb);
+
+ get_str16_nolen(pb, name_len, name, sizeof(name));
+//av_log(NULL, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
+ value_num= get_le16(pb);//we should use get_value() here but it doesnt 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;
+ int64_t pos_ex_st;
+ pos_ex_st = url_ftell(pb);
+
+ get_le64(pb); // starttime
+ get_le64(pb); // endtime
+ 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)
+ 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
+
+ for (i=0; i<stream_ct; i++){
+ get_le16(pb);
+ ext_len = get_le16(pb);
+ url_fseek(pb, ext_len, SEEK_CUR);
+ }
+
+ for (i=0; i<payload_ext_ct; i++){
+ get_guid(pb, &g);
+ ext_d=get_le16(pb);
+ ext_len=get_le32(pb);
+ url_fseek(pb, ext_len, SEEK_CUR);
+ }
+
+ // there could be a optional stream properties object to follow
+ // if so the next iteration will pick it up
} else if (!memcmp(&g, &head1_guid, sizeof(GUID))) {
int v1, v2;
get_guid(pb, &g);
v1 = get_le32(pb);
v2 = get_le16(pb);
+#if 0
} else if (!memcmp(&g, &codec_comment_header, sizeof(GUID))) {
int len, v1, n, num;
char str[256], *q;
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 && dar[i].num>0 && dar[i].den>0){
+ AVCodecContext *codec= s->streams[stream_num]->codec;
+ av_reduce(&codec->sample_aspect_ratio.num,
+ &codec->sample_aspect_ratio.den,
+ dar[i].num, dar[i].den, INT_MAX);
+//av_log(NULL, AV_LOG_ERROR, "dar %d:%d sar=%d:%d\n", dar[i].num, dar[i].den, codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
+ }
+ }
+
return 0;
fail:
for(i=0;i<s->nb_streams;i++) {
AVStream *st = s->streams[i];
- if (st) {
- av_free(st->priv_data);
- av_free(st->codec.extradata);
- }
+ if (st) {
+ av_free(st->priv_data);
+ av_free(st->codec->extradata);
+ }
av_free(st);
}
return -1;
default: var = defval; break; \
}
+/**
+ *
+ * @return <0 in case of an error
+ */
static int asf_get_packet(AVFormatContext *s)
{
ASFContext *asf = s->priv_data;
ByteIOContext *pb = &s->pb;
uint32_t packet_length, padsize;
- int rsize = 9;
- int c;
-
- assert((url_ftell(&s->pb) - s->data_offset) % asf->packet_size == 0);
-
- c = get_byte(pb);
+ int rsize = 8;
+ int c, d, e, off;
+
+ off= (url_ftell(&s->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:%lld\n", c, url_ftell(pb));
+ av_log(s, AV_LOG_ERROR, "ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
}
- if ((c & 0x0f) == 2) { // always true for now
- if (get_le16(pb) != 0) {
+ if ((c & 0x8f) == 0x82) {
+ if (d || e) {
if (!url_feof(pb))
- av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
- return -EIO;
- }
- rsize+=2;
-/* }else{
- if (!url_feof(pb))
- printf("ff asf bad header %x at:%lld\n", c, url_ftell(pb));
- return -EIO;*/
+ 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 = get_byte(pb);
- asf->packet_property = get_byte(pb);
+ 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_segsizetype = get_byte(pb); rsize++;
asf->packet_segments = asf->packet_segsizetype & 0x3f;
} else {
- asf->packet_segments = 1;
+ asf->packet_segments = 1;
asf->packet_segsizetype = 0x80;
}
asf->packet_size_left = packet_length - padsize - rsize;
return 0;
}
+/**
+ *
+ * @return <0 if error
+ */
+static int asf_read_frame_header(AVFormatContext *s){
+ ASFContext *asf = s->priv_data;
+ ByteIOContext *pb = &s->pb;
+ 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; i<asf->packet_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 begining 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;
+}
+
static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
ASFContext *asf = s->priv_data;
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);
+ if(url_feof(pb))
+ return AVERROR_IO;
+ 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(&s->pb);
- 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;
+ if (asf->data_object_size != (uint64_t)-1 &&
+ (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
+ return AVERROR_IO; /* Do not exceed the size of the data object */
+ ret = asf_get_packet(s);
+ //printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
+ if (ret < 0)
+ assert(asf->packet_size_left < FRAME_HEADER_SIZE || asf->packet_segments < 1);
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);
-//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 > 1) {
- assert(asf->packet_replic_size >= 8);
- // 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 if (asf->packet_replic_size==1){
- // 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;
-
- asf->packet_time_delta = get_byte(pb);
- rsize++;
- }else{
- assert(asf->packet_replic_size==0);
+ }
+ if (asf->packet_time_start == 0) {
+ if(asf_read_frame_header(s) < 0){
+ asf->packet_segments= 0;
+ continue;
}
- 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) {
+ 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;
- av_log(s, AV_LOG_ERROR, "ff asf skip %d %d\n", asf->packet_frag_size, num & 0x7f);
+ /* 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_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
- av_log(s, AV_LOG_INFO, "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);
- av_log(s, AV_LOG_INFO, "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->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 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;
+ 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;
- asf_st->packet_pos= asf->packet_pos;
-//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
+ }
+ 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->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.pts = 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)
+//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);
- 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
- }
+ }
+
+ 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) {
+ 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\n");
+ }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;
}
int i;
for(i=0;i<s->nb_streams;i++) {
- AVStream *st = s->streams[i];
- av_free(st->priv_data);
- av_free(st->codec.extradata);
- av_free(st->codec.palctrl);
+ AVStream *st = s->streams[i];
+ av_free(st->priv_data);
+ av_free(st->codec->palctrl);
}
return 0;
}
int i;
asf->packet_nb_frames = 0;
- asf->packet_timestamp_start = -1;
- asf->packet_timestamp_end = -1;
asf->packet_size_left = 0;
asf->packet_segments = 0;
asf->packet_flags = 0;
asf->packet_obj_size = 0;
asf->packet_time_delta = 0;
asf->packet_time_start = 0;
-
+
for(i=0; i<s->nb_streams; i++){
asf_st= s->streams[i]->priv_data;
av_free_packet(&asf_st->pkt);
asf->asf_st= NULL;
}
-static int64_t asf_read_pts(AVFormatContext *s, int64_t *ppos, int stream_index)
+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;
int64_t pos= *ppos;
int i;
int64_t start_pos[s->nb_streams];
-
+
for(i=0; i<s->nb_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");
- url_fseek(&s->pb, pos*asf->packet_size + s->data_offset, SEEK_SET);
asf_reset_header(s);
for(;;){
if (av_read_frame(s, pkt) < 0){
- av_log(s, AV_LOG_INFO, "seek failed\n");
- return AV_NOPTS_VALUE;
+ av_log(s, AV_LOG_INFO, "asf_read_pts failed\n");
+ return AV_NOPTS_VALUE;
}
+
pts= pkt->pts;
av_free_packet(pkt);
asf_st= s->streams[i]->priv_data;
- assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
- pos= (asf_st->packet_pos - s->data_offset) / asf->packet_size;
+// 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;
- av_add_index_entry(s->streams[i], pos, pts, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
- start_pos[i]= pos + 1;
-
if(pkt->stream_index == stream_index)
break;
}
}
*ppos= pos;
-//printf("found keyframe at %Ld stream %d stamp:%Ld\n", *ppos, stream_index, pts);
+//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
return pts;
}
-static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts)
+static void asf_build_simple_index(AVFormatContext *s, int stream_index)
{
+ GUID g;
ASFContext *asf = s->priv_data;
- AVStream *st;
- int64_t pos;
- int64_t pos_min, pos_max, pts_min, pts_max, cur_pts, pos_limit;
- int no_change;
-
- if (stream_index == -1)
- stream_index= av_find_default_stream_index(s);
-
- if (asf->packet_size <= 0)
- return -1;
+ int64_t gsize, itime;
+ int64_t pos, current_pos, index_pts;
+ int i;
+ int pct,ict;
- pts_max=
- pts_min= AV_NOPTS_VALUE;
- pos_max= pos_limit= -1; // gcc thinks its uninitalized
-
- st= s->streams[stream_index];
- if(st->index_entries){
- AVIndexEntry *e;
- int index;
-
- index= av_index_search_timestamp(st, pts);
- e= &st->index_entries[index];
- if(e->timestamp <= pts){
- pos_min= e->pos;
- pts_min= e->timestamp;
-#ifdef DEBUG_SEEK
- printf("unsing cached pos_min=0x%llx dts_min=%0.3f\n",
- pos_min,pts_min / 90000.0);
-#endif
- }else{
- assert(index==0);
- }
- index++;
- if(index < st->nb_index_entries){
- e= &st->index_entries[index];
- assert(e->timestamp >= pts);
- pos_max= e->pos;
- pts_max= e->timestamp;
- pos_limit= pos_max - e->min_distance;
-#ifdef DEBUG_SEEK
- printf("unsing cached pos_max=0x%llx dts_max=%0.3f\n",
- pos_max,pts_max / 90000.0);
-#endif
+ 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(NULL, AV_LOG_DEBUG, "itime:0x%"PRIx64", pct:%d, ict:%d\n",itime,pct,ict);
+
+ for (i=0;i<ict;i++){
+ int pktnum=get_le32(&s->pb);
+ int pktct =get_le16(&s->pb);
+ av_log(NULL, 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);
+}
- if(pts_min == AV_NOPTS_VALUE){
- pos_min = 0;
- pts_min = asf_read_pts(s, &pos_min, stream_index);
- if (pts_min == AV_NOPTS_VALUE) return -1;
- }
- if(pts_max == AV_NOPTS_VALUE){
- pos_max = (url_filesize(url_fileno(&s->pb)) - 1 - s->data_offset) / asf->packet_size; //FIXME wrong
- pts_max = s->duration; //FIXME wrong
- pos_limit= pos_max;
- }
-
- no_change=0;
- while (pos_min < pos_limit) {
- int64_t start_pos;
- assert(pos_limit <= pos_max);
-
- if(no_change==0){
- int64_t approximate_keyframe_distance= pos_max - pos_limit;
- // interpolate position (better than dichotomy)
- pos = (int64_t)((double)(pos_max - pos_min) *
- (double)(pts - pts_min) /
- (double)(pts_max - pts_min)) + pos_min - approximate_keyframe_distance;
- }else if(no_change==1){
- // bisection, if interpolation failed to change min or max pos last time
- pos = (pos_min + pos_limit)>>1;
- }else{
- // linear search if bisection failed, can only happen if there are very few or no keyframes between min/max
- pos=pos_min;
- }
- if(pos <= pos_min)
- pos= pos_min + 1;
- else if(pos > pos_limit)
- pos= pos_limit;
- start_pos= pos;
-
- // read the next timestamp
- cur_pts = asf_read_pts(s, &pos, stream_index);
- if(pos == pos_max)
- no_change++;
- else
- no_change=0;
-
-#ifdef DEBUG_SEEK
-printf("%Ld %Ld %Ld / %Ld %Ld %Ld target:%Ld limit:%Ld start:%Ld\n", pos_min, pos, pos_max, pts_min, cur_pts, pts_max, pts, pos_limit, start_pos);
-#endif
- assert (cur_pts != AV_NOPTS_VALUE);
- if (pts < cur_pts) {
- pos_limit = start_pos - 1;
- pos_max = pos;
- pts_max = cur_pts;
- } else {
- pos_min = pos;
- pts_min = cur_pts;
- /* check if we are lucky */
- if (pts == cur_pts)
- break;
- }
+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;
+
+ 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(NULL, AV_LOG_DEBUG, "SEEKTO: %"PRId64"\n", pos);
+ url_fseek(&s->pb, pos, SEEK_SET);
}
- pos = pos_min;
- url_fseek(&s->pb, pos*asf->packet_size + s->data_offset, SEEK_SET);
asf_reset_header(s);
return 0;
}
-static AVInputFormat asf_iformat = {
+AVInputFormat asf_demuxer = {
"asf",
"asf format",
sizeof(ASFContext),
asf_read_packet,
asf_read_close,
asf_read_seek,
+ asf_read_pts,
};
-
-#ifdef CONFIG_ENCODERS
-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,
-};
-#endif //CONFIG_ENCODERS
-
-int asf_init(void)
-{
- av_register_input_format(&asf_iformat);
-#ifdef CONFIG_ENCODERS
- av_register_output_format(&asf_oformat);
- av_register_output_format(&asf_stream_oformat);
-#endif //CONFIG_ENCODERS
- return 0;
-}
projects / ffmpeg / blobdiff