diff options
Diffstat (limited to 'ffmpeg1/libavformat/asf.h')
| -rw-r--r-- | ffmpeg1/libavformat/asf.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/ffmpeg1/libavformat/asf.h b/ffmpeg1/libavformat/asf.h new file mode 100644 index 0000000..5ffc746 --- /dev/null +++ b/ffmpeg1/libavformat/asf.h @@ -0,0 +1,188 @@ +/* + * Copyright (c) 2000, 2001 Fabrice Bellard + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFORMAT_ASF_H +#define AVFORMAT_ASF_H + +#include <stdint.h> +#include "avformat.h" +#include "metadata.h" +#include "riff.h" + +#define PACKET_SIZE 3200 + +typedef struct ASFPayload { + uint8_t type; + uint16_t size; +} ASFPayload; + +typedef struct ASFStream { + int num; + unsigned char 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; + + int64_t packet_pos; + + uint16_t stream_language_index; + + int palette_changed; + uint32_t palette[256]; + + int payload_ext_ct; + ASFPayload payload[8]; +} ASFStream; + +typedef struct ASFMainHeader { + ff_asf_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 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 - subtract 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; /**< bandwidth of stream in bps + * should be the sum of bitrates of the + * individual media streams */ +} ASFMainHeader; + + +typedef struct ASFIndex { + uint32_t packet_number; + uint16_t packet_count; +} ASFIndex; + +extern const ff_asf_guid ff_asf_header; +extern const ff_asf_guid ff_asf_file_header; +extern const ff_asf_guid ff_asf_stream_header; +extern const ff_asf_guid ff_asf_ext_stream_header; +extern const ff_asf_guid ff_asf_audio_stream; +extern const ff_asf_guid ff_asf_audio_conceal_none; +extern const ff_asf_guid ff_asf_audio_conceal_spread; +extern const ff_asf_guid ff_asf_video_stream; +extern const ff_asf_guid ff_asf_jfif_media; +extern const ff_asf_guid ff_asf_video_conceal_none; +extern const ff_asf_guid ff_asf_command_stream; +extern const ff_asf_guid ff_asf_comment_header; +extern const ff_asf_guid ff_asf_codec_comment_header; +extern const ff_asf_guid ff_asf_codec_comment1_header; +extern const ff_asf_guid ff_asf_data_header; +extern const ff_asf_guid ff_asf_head1_guid; +extern const ff_asf_guid ff_asf_head2_guid; +extern const ff_asf_guid ff_asf_extended_content_header; +extern const ff_asf_guid ff_asf_simple_index_header; +extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header; +extern const ff_asf_guid ff_asf_ext_stream_audio_stream; +extern const ff_asf_guid ff_asf_metadata_header; +extern const ff_asf_guid ff_asf_metadata_library_header; +extern const ff_asf_guid ff_asf_marker_header; +extern const ff_asf_guid ff_asf_my_guid; +extern const ff_asf_guid ff_asf_language_guid; +extern const ff_asf_guid ff_asf_content_encryption; +extern const ff_asf_guid ff_asf_ext_content_encryption; +extern const ff_asf_guid ff_asf_digital_signature; + +extern const AVMetadataConv ff_asf_metadata_conv[]; + +#define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000 + + +// ASF data packet structure +// ========================= +// +// +// ----------------------------------- +// | Error Correction Data | Optional +// ----------------------------------- +// | Payload Parsing Information (PPI) | +// ----------------------------------- +// | Payload Data | +// ----------------------------------- +// | Padding Data | +// ----------------------------------- + + +// PPI_FLAG - Payload parsing information flags +#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1 + +#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010 +#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100 +#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110 +#define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110 + +#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000 +#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000 +#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000 +#define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000 + +#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000 +#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000 +#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000 +#define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000 + +// PL_FLAG - Payload flags +#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001 +#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010 +#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011 +#define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011 + +#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100 +#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000 +#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100 +#define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100 + +#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000 +#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000 +#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000 +#define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000 + +#define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 +#define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000 + +#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 +#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000 +#define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000 + +#define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000 + +extern AVInputFormat ff_asf_demuxer; + +void ff_put_guid(AVIOContext *s, const ff_asf_guid *g); + +#endif /* AVFORMAT_ASF_H */ |