diff options
Diffstat (limited to 'asfenc.c')
| -rw-r--r-- | asfenc.c | 510 |
1 files changed, 0 insertions, 510 deletions
diff --git a/asfenc.c b/asfenc.c deleted file mode 100644 index 5b2892309f..0000000000 --- a/asfenc.c +++ /dev/null @@ -1,510 +0,0 @@ -/* - * ASF compatible encoder - * Copyright (c) 2000 Gerard Lantau. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <stdlib.h> -#include <stdio.h> -#include <netinet/in.h> -#include <string.h> -#include "mpegenc.h" - -#define PACKET_SIZE 3200 -#define PACKET_HEADER_SIZE 12 -#define FRAME_HEADER_SIZE 17 - -typedef struct { - AVEncodeContext *enc; - int num; - int seq; -} ASFStream; - -typedef struct { - int is_streamed; /* true if streamed */ - int seqno; - int packet_size; - - ASFStream streams[2]; - ASFStream *audio_stream, *video_stream; - int nb_streams; - /* non streamed additonnal info */ - int file_size_offset; - int data_offset; - /* packet filling */ - int packet_size_left; - int packet_timestamp_start; - int packet_timestamp_end; - int packet_nb_frames; - UINT8 packet_buf[PACKET_SIZE]; - PutByteContext pb; -} ASFContext; - -typedef struct { - UINT32 v1; - UINT16 v2; - UINT16 v3; - UINT8 v4[8]; -} GUID; - -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 }, -}; - -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 = { - 0x86D15240, 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 packet_guid = { - 0xF656CCE1, 0x03B3, 0x11D4, { 0xBE, 0xA2, 0x00, 0xA0, 0xCC, 0x3D, 0x72, 0x74 }, -}; - -/* I am not a number !!! This GUID is the one found on the PC used to - generate the stream */ -static const GUID my_guid = { - 0x12345678, 0xA947, 0x11CF, { 0x31, 0x41, 0x59, 0x26, 0x20, 0x20, 0x20, 0x20 }, -}; - -static void put_guid(PutByteContext *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]); -} - -#if 0 -static void put_str16(PutByteContext *s, const char *tag) -{ - put_le16(s,strlen(tag)); - while (*tag) { - put_le16(s, *tag++); - } -} -#endif - -/* write an asf chunk (only used in streaming case) */ -static void put_chunk(AVFormatContext *s, int type, int payload_length) -{ - ASFContext *asf = s->priv_data; - PutByteContext *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, 0); /* unknown bytes */ - put_le16(pb, length); - asf->seqno++; -} - - -static int asf_write_header(AVFormatContext *s) -{ - PutByteContext *pb = &s->pb; - ASFContext *asf; - int header_size, n, extra_size, extra_size2, i, wav_extra_size; - AVEncodeContext *enc; - long long header_offset, cur_pos; - - asf = malloc(sizeof(ASFContext)); - if (!asf) - return -1; - memset(asf, 0, sizeof(ASFContext)); - s->priv_data = asf; - - asf->packet_size = PACKET_SIZE; - - if (!s->is_streamed) { - put_guid(pb, &asf_header); - put_le64(pb, 0); /* header length, will be patched after */ - put_le32(pb, 6); /* ??? */ - put_byte(pb, 1); /* ??? */ - put_byte(pb, 2); /* ??? */ - } else { - put_chunk(s, 0x4824, 0); /* start of stream (length will be patched later) */ - } - - /* file header */ - header_offset = put_pos(pb); - put_guid(pb, &file_header); - put_le64(pb, 24 + 80); - put_guid(pb, &my_guid); - asf->file_size_offset = put_pos(pb); - put_le64(pb, 0); /* file size (patched after if not streamed) */ - put_le64(pb, 0); /* file time : 1601 :-) */ - put_le64(pb, 0x283); /* ??? */ - put_le64(pb, 0); /* stream 0 length in us */ - put_le64(pb, 0); /* stream 1 length in us */ - put_le32(pb, 0x0c1c); /* ??? */ - put_le32(pb, 0); /* ??? */ - put_le32(pb, 2); /* ??? */ - put_le32(pb, asf->packet_size); /* packet size */ - put_le32(pb, asf->packet_size); /* ??? */ - put_le32(pb, 0x03e800); /* ??? */ - - /* stream headers */ - n = 0; - for(i=0;i<2;i++) { - if (i == 0) - enc = s->audio_enc; - else - enc = s->video_enc; - - if (!enc) - continue; - asf->streams[n].num = i; - asf->streams[n].seq = 0; - asf->streams[n].enc = enc; - - switch(enc->codec->type) { - case CODEC_TYPE_AUDIO: - asf->audio_stream = &asf->streams[n]; - wav_extra_size = 0; - extra_size = 18 + wav_extra_size; - extra_size2 = 0; - break; - default: - case CODEC_TYPE_VIDEO: - asf->video_stream = &asf->streams[n]; - wav_extra_size = 0; - extra_size = 0x33; - extra_size2 = 0; - break; - } - - put_guid(pb, &stream_header); - put_le64(pb, 24 + 16 * 2 + 22 + extra_size + extra_size2); - 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); /* ??? */ - 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 */ - - put_le16(pb, 0x55); /* MP3 format */ - put_le16(pb, s->audio_enc->channels); - put_le32(pb, s->audio_enc->rate); - put_le32(pb, s->audio_enc->bit_rate / 8); - put_le16(pb, 1); /* block align */ - put_le16(pb, 16); /* bits per sample */ - put_le16(pb, wav_extra_size); - - /* no addtionnal adata */ - } else { - put_le32(pb, enc->width); - put_le32(pb, enc->height); - put_byte(pb, 2); /* ??? */ - put_le16(pb, 40); /* size */ - - /* BITMAPINFOHEADER header */ - put_le32(pb, 40); /* size */ - put_le32(pb, enc->width); - put_le32(pb, enc->height); - put_le16(pb, 1); /* planes */ - put_le16(pb, 24); /* depth */ - /* compression type */ - switch(enc->codec->id) { - case CODEC_ID_H263: - put_tag(pb, "I263"); - break; - case CODEC_ID_MJPEG: - put_tag(pb, "MJPG"); - break; - default: - put_tag(pb, "XXXX"); - break; - } - put_le32(pb, enc->width * enc->height * 3); - put_le32(pb, 0); - put_le32(pb, 0); - put_le32(pb, 0); - put_le32(pb, 0); - } - n++; - } - asf->nb_streams = n; - - /* XXX: should media comments */ -#if 0 - put_guid(pb, &comment_header); - put_le64(pb, 0); -#endif - /* patch the header size fields */ - cur_pos = put_pos(pb); - header_size = cur_pos - header_offset; - if (!s->is_streamed) { - header_size += 24 + 6; - put_seek(pb, header_offset - 14, SEEK_SET); - put_le64(pb, header_size); - } else { - header_size += 8 + 50; - put_seek(pb, header_offset - 10, SEEK_SET); - put_le16(pb, header_size); - put_seek(pb, header_offset - 2, SEEK_SET); - put_le16(pb, header_size); - } - put_seek(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, 24); /* will be patched after */ - put_guid(pb, &packet_guid); - put_le64(pb, 0x283); /* ??? */ - put_byte(pb, 1); /* ??? */ - put_byte(pb, 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, - NULL, NULL, NULL); - - return 0; -} - -/* write a fixed size packet */ -static void put_packet(AVFormatContext *s, - unsigned int timestamp, unsigned int duration, - int nb_frames, int padsize) -{ - ASFContext *asf = s->priv_data; - PutByteContext *pb = &s->pb; - int flags; - - if (s->is_streamed) { - put_chunk(s, 0x4424, asf->packet_size); - } - - 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); - if (flags & 0x08) - put_byte(pb, padsize); - put_le32(pb, timestamp); - put_le16(pb, duration); - put_byte(pb, nb_frames | 0x80); -} - -static void flush_packet(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - int hdr_size, ptr; - - put_packet(s, asf->packet_timestamp_start, - asf->packet_timestamp_end - asf->packet_timestamp_start, - asf->packet_nb_frames, asf->packet_size_left); - - /* compute padding */ - hdr_size = PACKET_HEADER_SIZE; - if (asf->packet_size_left > 0) { - /* if padding needed, don't forget to count the - padding byte in the header size */ - hdr_size++; - asf->packet_size_left--; - /* XXX: I do not test again exact limit to avoid boundary problems */ - if (asf->packet_size_left > 200) { - hdr_size++; - asf->packet_size_left--; - } - } - ptr = asf->packet_size - PACKET_HEADER_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->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, - 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; - PutByteContext *pb = &asf->pb; - int val; - - val = stream->num; - if (stream->enc->key_frame) - 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, - UINT8 *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, 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_audio(AVFormatContext *s, UINT8 *buf, int size) -{ - ASFContext *asf = s->priv_data; - int timestamp; - - timestamp = (int)((float)s->audio_enc->frame_number * s->audio_enc->frame_size * 1000.0 / - s->audio_enc->rate); - put_frame(s, asf->audio_stream, timestamp, buf, size); - return 0; -} - -static int asf_write_video(AVFormatContext *s, UINT8 *buf, int size) -{ - ASFContext *asf = s->priv_data; - int timestamp; - - timestamp = (int)((float)s->video_enc->frame_number * 1000.0 / - s->video_enc->rate); - put_frame(s, asf->audio_stream, timestamp, buf, size); - return 0; -} - -static int asf_write_trailer(AVFormatContext *s) -{ - ASFContext *asf = s->priv_data; - long long file_size; - - /* flush the current packet */ - if (asf->pb.buf_ptr > asf->pb.buffer) - flush_packet(s); - - if (s->is_streamed) { - put_chunk(s, 0x4524, 0); /* end of stream */ - } else { - /* patch the various place which depends on the file size */ - file_size = put_pos(&s->pb); - put_seek(&s->pb, asf->file_size_offset, SEEK_SET); - put_le64(&s->pb, file_size); - put_seek(&s->pb, asf->data_offset + 16, SEEK_SET); - put_le64(&s->pb, file_size - asf->data_offset); - } - - put_flush_packet(&s->pb); - - free(asf); - return 0; -} - -AVFormat asf_format = { - "asf", - "asf format", - "application/octet-stream", - "asf", - CODEC_ID_MP2, - CODEC_ID_MJPEG, - asf_write_header, - asf_write_audio, - asf_write_video, - asf_write_trailer, -}; |