856 lines
28 KiB
C
856 lines
28 KiB
C
/*
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* ASF muxer
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* Copyright (c) 2000, 2001 Fabrice Bellard.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h"
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#include "riff.h"
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#include "asf.h"
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#undef NDEBUG
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#include <assert.h>
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#define ASF_INDEXED_INTERVAL 10000000
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#define ASF_INDEX_BLOCK 600
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#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
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#define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
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ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
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ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
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)
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#if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
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# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
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#else
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# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
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#endif
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#define ASF_PPI_PROPERTY_FLAGS (\
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ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
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ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
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ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
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ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
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)
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#define ASF_PPI_LENGTH_TYPE_FLAGS 0
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#define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
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#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
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# define ASF_PPI_SEQUENCE_FIELD_SIZE 1
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#endif
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#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
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# define ASF_PPI_SEQUENCE_FIELD_SIZE 2
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#endif
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#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
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# define ASF_PPI_SEQUENCE_FIELD_SIZE 4
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#endif
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#ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
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# define ASF_PPI_SEQUENCE_FIELD_SIZE 0
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#endif
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#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
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#endif
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#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
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#endif
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#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
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#endif
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#ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
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# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
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#endif
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#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
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#endif
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#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
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#endif
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#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
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# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
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#endif
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#ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
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# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
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#endif
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#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
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#endif
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#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
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#endif
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#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
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#endif
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#ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
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# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
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#endif
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#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
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#endif
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#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
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#endif
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#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
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#endif
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#ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
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# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
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#endif
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#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
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#endif
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#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
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#endif
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#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
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#endif
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#ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
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# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
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#endif
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#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
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#endif
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#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
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# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
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#endif
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#ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
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# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
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#endif
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#define PACKET_HEADER_MIN_SIZE (\
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ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
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ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
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1 + /*Length Type Flags*/ \
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1 + /*Property Flags*/ \
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ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
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ASF_PPI_SEQUENCE_FIELD_SIZE + \
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ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
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4 + /*Send Time Field*/ \
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2 /*Duration Field*/ \
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)
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// Replicated Data shall be at least 8 bytes long.
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#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
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#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
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1 + /*Stream Number*/ \
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ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
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ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
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ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
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ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
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)
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#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
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1 + /*Stream Number*/ \
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ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
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ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
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ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
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ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
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ASF_PAYLOAD_LENGTH_FIELD_SIZE \
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)
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#define SINGLE_PAYLOAD_DATA_LENGTH (\
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PACKET_SIZE - \
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PACKET_HEADER_MIN_SIZE - \
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PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
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)
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#define MULTI_PAYLOAD_CONSTANT (\
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PACKET_SIZE - \
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PACKET_HEADER_MIN_SIZE - \
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1 - /*Payload Flags*/ \
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2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
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)
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static const AVCodecTag codec_asf_bmp_tags[] = {
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{ CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
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{ CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
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{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
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{ CODEC_ID_NONE, 0 },
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};
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#define PREROLL_TIME 3100
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static void put_guid(ByteIOContext *s, const GUID *g)
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{
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assert(sizeof(*g) == 16);
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put_buffer(s, *g, sizeof(*g));
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}
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static void put_str16_nolen(ByteIOContext *s, const char *tag);
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static void put_str16(ByteIOContext *s, const char *tag)
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{
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put_le16(s,strlen(tag) + 1);
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put_str16_nolen(s, tag);
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}
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static void put_str16_nolen(ByteIOContext *s, const char *tag)
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{
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int c;
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do{
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c = (uint8_t)*tag++;
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put_le16(s, c);
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}while(c);
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}
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static int64_t put_header(ByteIOContext *pb, const GUID *g)
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{
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int64_t pos;
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pos = url_ftell(pb);
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put_guid(pb, g);
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put_le64(pb, 24);
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return pos;
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}
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/* update header size */
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static void end_header(ByteIOContext *pb, int64_t pos)
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{
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int64_t pos1;
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pos1 = url_ftell(pb);
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url_fseek(pb, pos + 16, SEEK_SET);
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put_le64(pb, pos1 - pos);
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url_fseek(pb, pos1, SEEK_SET);
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}
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/* write an asf chunk (only used in streaming case) */
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static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
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{
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ASFContext *asf = s->priv_data;
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ByteIOContext *pb = s->pb;
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int length;
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length = payload_length + 8;
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put_le16(pb, type);
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put_le16(pb, length); //size
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put_le32(pb, asf->seqno);//sequence number
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put_le16(pb, flags); /* unknown bytes */
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put_le16(pb, length); //size_confirm
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asf->seqno++;
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}
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/* convert from unix to windows time */
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static int64_t unix_to_file_time(int ti)
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{
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int64_t t;
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t = ti * INT64_C(10000000);
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t += INT64_C(116444736000000000);
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return t;
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}
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/* write the header (used two times if non streamed) */
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static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
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{
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ASFContext *asf = s->priv_data;
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ByteIOContext *pb = s->pb;
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int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
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int has_title;
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AVCodecContext *enc;
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int64_t header_offset, cur_pos, hpos;
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int bit_rate;
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int64_t duration;
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duration = asf->duration + PREROLL_TIME * 10000;
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has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
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bit_rate = 0;
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for(n=0;n<s->nb_streams;n++) {
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enc = s->streams[n]->codec;
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av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
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bit_rate += enc->bit_rate;
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}
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if (asf->is_streamed) {
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put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
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}
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put_guid(pb, &asf_header);
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put_le64(pb, -1); /* header length, will be patched after */
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put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
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put_byte(pb, 1); /* ??? */
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put_byte(pb, 2); /* ??? */
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/* file header */
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header_offset = url_ftell(pb);
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hpos = put_header(pb, &file_header);
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put_guid(pb, &my_guid);
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put_le64(pb, file_size);
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file_time = 0;
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put_le64(pb, unix_to_file_time(file_time));
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put_le64(pb, asf->nb_packets); /* number of packets */
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put_le64(pb, duration); /* end time stamp (in 100ns units) */
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put_le64(pb, asf->duration); /* duration (in 100ns units) */
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put_le64(pb, PREROLL_TIME); /* start time stamp */
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put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
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put_le32(pb, asf->packet_size); /* packet size */
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put_le32(pb, asf->packet_size); /* packet size */
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put_le32(pb, bit_rate); /* Nominal data rate in bps */
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end_header(pb, hpos);
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/* unknown headers */
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hpos = put_header(pb, &head1_guid);
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put_guid(pb, &head2_guid);
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put_le32(pb, 6);
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put_le16(pb, 0);
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end_header(pb, hpos);
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/* title and other infos */
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if (has_title) {
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hpos = put_header(pb, &comment_header);
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if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
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if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
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if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
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if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
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put_le16(pb, 0);
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if ( s->title[0] ) put_str16_nolen(pb, s->title);
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if ( s->author[0] ) put_str16_nolen(pb, s->author);
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if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
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if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
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end_header(pb, hpos);
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}
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/* stream headers */
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for(n=0;n<s->nb_streams;n++) {
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int64_t es_pos;
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// ASFStream *stream = &asf->streams[n];
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enc = s->streams[n]->codec;
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asf->streams[n].num = n + 1;
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asf->streams[n].seq = 0;
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switch(enc->codec_type) {
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case CODEC_TYPE_AUDIO:
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wav_extra_size = 0;
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extra_size = 18 + wav_extra_size;
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extra_size2 = 8;
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break;
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default:
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case CODEC_TYPE_VIDEO:
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wav_extra_size = enc->extradata_size;
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extra_size = 0x33 + wav_extra_size;
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extra_size2 = 0;
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break;
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}
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hpos = put_header(pb, &stream_header);
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if (enc->codec_type == CODEC_TYPE_AUDIO) {
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put_guid(pb, &audio_stream);
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put_guid(pb, &audio_conceal_spread);
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} else {
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put_guid(pb, &video_stream);
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put_guid(pb, &video_conceal_none);
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}
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put_le64(pb, 0); /* ??? */
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es_pos = url_ftell(pb);
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put_le32(pb, extra_size); /* wav header len */
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put_le32(pb, extra_size2); /* additional data len */
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put_le16(pb, n + 1); /* stream number */
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put_le32(pb, 0); /* ??? */
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if (enc->codec_type == CODEC_TYPE_AUDIO) {
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/* WAVEFORMATEX header */
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int wavsize = put_wav_header(pb, enc);
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if ((enc->codec_id != CODEC_ID_MP3) && (enc->codec_id != CODEC_ID_MP2) && (enc->codec_id != CODEC_ID_ADPCM_IMA_WAV) && (enc->extradata_size==0)) {
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wavsize += 2;
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put_le16(pb, 0);
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}
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if (wavsize < 0)
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return -1;
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if (wavsize != extra_size) {
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cur_pos = url_ftell(pb);
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url_fseek(pb, es_pos, SEEK_SET);
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put_le32(pb, wavsize); /* wav header len */
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url_fseek(pb, cur_pos, SEEK_SET);
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}
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/* ERROR Correction */
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put_byte(pb, 0x01);
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if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
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put_le16(pb, 0x0190);
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put_le16(pb, 0x0190);
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}else{
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put_le16(pb, enc->block_align);
|
|
put_le16(pb, enc->block_align);
|
|
}
|
|
put_le16(pb, 0x01);
|
|
put_byte(pb, 0x00);
|
|
} else {
|
|
put_le32(pb, enc->width);
|
|
put_le32(pb, enc->height);
|
|
put_byte(pb, 2); /* ??? */
|
|
put_le16(pb, 40 + enc->extradata_size); /* 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);
|
|
|
|
if(enc->codec_type == CODEC_TYPE_AUDIO)
|
|
put_le16(pb, 2);
|
|
else if(enc->codec_type == CODEC_TYPE_VIDEO)
|
|
put_le16(pb, 1);
|
|
else
|
|
put_le16(pb, -1);
|
|
|
|
if(enc->codec_id == CODEC_ID_WMAV2)
|
|
put_str16(pb, "Windows Media Audio V8");
|
|
else
|
|
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);
|
|
put_le16(pb, enc->codec_tag);
|
|
} else {
|
|
put_le16(pb, 4);
|
|
put_le32(pb, enc->codec_tag);
|
|
}
|
|
if(!enc->codec_tag)
|
|
return -1;
|
|
}
|
|
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;
|
|
|
|
asf->packet_size = PACKET_SIZE;
|
|
asf->nb_packets = 0;
|
|
|
|
asf->last_indexed_pts = 0;
|
|
asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
|
|
asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
|
|
asf->nb_index_count = 0;
|
|
asf->maximum_packet = 0;
|
|
|
|
/* the data-chunk-size has to be 50, which is data_size - asf->data_offset
|
|
* at the moment this function is done. It is needed to use asf as
|
|
* streamable format. */
|
|
if (asf_write_header1(s, 0, 50) < 0) {
|
|
//av_free(asf);
|
|
return -1;
|
|
}
|
|
|
|
put_flush_packet(s->pb);
|
|
|
|
asf->packet_nb_payloads = 0;
|
|
asf->packet_timestamp_start = -1;
|
|
asf->packet_timestamp_end = -1;
|
|
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);
|
|
}
|
|
|
|
static int put_payload_parsing_info(
|
|
AVFormatContext *s,
|
|
unsigned int sendtime,
|
|
unsigned int duration,
|
|
int nb_payloads,
|
|
int padsize
|
|
)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
int ppi_size, i;
|
|
int64_t start= url_ftell(pb);
|
|
|
|
int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
|
|
|
|
padsize -= PACKET_HEADER_MIN_SIZE;
|
|
if(asf->multi_payloads_present)
|
|
padsize--;
|
|
assert(padsize>=0);
|
|
|
|
put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
|
|
for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
|
|
put_byte(pb, 0x0);
|
|
}
|
|
|
|
if (asf->multi_payloads_present)
|
|
iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
|
|
|
|
if (padsize > 0) {
|
|
if (padsize < 256)
|
|
iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
|
|
else
|
|
iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
|
|
}
|
|
put_byte(pb, iLengthTypeFlags);
|
|
|
|
put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
|
|
|
|
if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
|
|
put_le16(pb, padsize - 2);
|
|
if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
|
|
put_byte(pb, padsize - 1);
|
|
|
|
put_le32(pb, sendtime);
|
|
put_le16(pb, duration);
|
|
if (asf->multi_payloads_present)
|
|
put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
|
|
|
|
ppi_size = url_ftell(pb) - start;
|
|
|
|
return ppi_size;
|
|
}
|
|
|
|
static void flush_packet(AVFormatContext *s)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
int packet_hdr_size, packet_filled_size;
|
|
|
|
assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
|
|
|
|
if (asf->is_streamed) {
|
|
put_chunk(s, 0x4424, asf->packet_size, 0);
|
|
}
|
|
|
|
packet_hdr_size = put_payload_parsing_info(
|
|
s,
|
|
asf->packet_timestamp_start,
|
|
asf->packet_timestamp_end - asf->packet_timestamp_start,
|
|
asf->packet_nb_payloads,
|
|
asf->packet_size_left
|
|
);
|
|
|
|
packet_filled_size = PACKET_SIZE - asf->packet_size_left;
|
|
assert(packet_hdr_size <= asf->packet_size_left);
|
|
memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
|
|
|
|
put_buffer(s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
|
|
|
|
put_flush_packet(s->pb);
|
|
asf->nb_packets++;
|
|
asf->packet_nb_payloads = 0;
|
|
asf->packet_timestamp_start = -1;
|
|
asf->packet_timestamp_end = -1;
|
|
init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
|
|
NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
static void put_payload_header(
|
|
AVFormatContext *s,
|
|
ASFStream *stream,
|
|
int presentation_time,
|
|
int m_obj_size,
|
|
int m_obj_offset,
|
|
int payload_len,
|
|
int flags
|
|
)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
ByteIOContext *pb = &asf->pb;
|
|
int val;
|
|
|
|
val = stream->num;
|
|
if (flags & PKT_FLAG_KEY)
|
|
val |= ASF_PL_FLAG_KEY_FRAME;
|
|
put_byte(pb, val);
|
|
|
|
put_byte(pb, stream->seq); //Media object number
|
|
put_le32(pb, m_obj_offset); //Offset Into Media Object
|
|
|
|
// Replicated Data shall be at least 8 bytes long.
|
|
// The first 4 bytes of data shall contain the
|
|
// Size of the Media Object that the payload belongs to.
|
|
// The next 4 bytes of data shall contain the
|
|
// Presentation Time for the media object that the payload belongs to.
|
|
put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
|
|
|
|
put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
|
|
put_le32(pb, presentation_time);//Replicated Data - Presentation Time
|
|
|
|
if (asf->multi_payloads_present){
|
|
put_le16(pb, payload_len); //payload length
|
|
}
|
|
}
|
|
|
|
static void put_frame(
|
|
AVFormatContext *s,
|
|
ASFStream *stream,
|
|
AVStream *avst,
|
|
int timestamp,
|
|
const uint8_t *buf,
|
|
int m_obj_size,
|
|
int flags
|
|
)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
int m_obj_offset, payload_len, frag_len1;
|
|
|
|
m_obj_offset = 0;
|
|
while (m_obj_offset < m_obj_size) {
|
|
payload_len = m_obj_size - m_obj_offset;
|
|
if (asf->packet_timestamp_start == -1) {
|
|
asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
|
|
|
|
asf->packet_size_left = PACKET_SIZE;
|
|
if (asf->multi_payloads_present){
|
|
frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
|
|
}
|
|
else {
|
|
frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
|
|
}
|
|
asf->packet_timestamp_start = timestamp;
|
|
}
|
|
else {
|
|
// multi payloads
|
|
frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1;
|
|
|
|
if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){
|
|
flush_packet(s);
|
|
continue;
|
|
}
|
|
}
|
|
if (frag_len1 > 0) {
|
|
if (payload_len > frag_len1)
|
|
payload_len = frag_len1;
|
|
else if (payload_len == (frag_len1 - 1))
|
|
payload_len = frag_len1 - 2; //additional byte need to put padding length
|
|
|
|
put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags);
|
|
put_buffer(&asf->pb, buf, payload_len);
|
|
|
|
if (asf->multi_payloads_present)
|
|
asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
|
|
else
|
|
asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
|
|
asf->packet_timestamp_end = timestamp;
|
|
|
|
asf->packet_nb_payloads++;
|
|
} else {
|
|
payload_len = 0;
|
|
}
|
|
m_obj_offset += payload_len;
|
|
buf += payload_len;
|
|
|
|
if (!asf->multi_payloads_present)
|
|
flush_packet(s);
|
|
else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
|
|
flush_packet(s);
|
|
}
|
|
stream->seq++;
|
|
}
|
|
|
|
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
ASFStream *stream;
|
|
int64_t duration;
|
|
AVCodecContext *codec;
|
|
int64_t packet_st,pts;
|
|
int start_sec,i;
|
|
int flags= pkt->flags;
|
|
|
|
codec = s->streams[pkt->stream_index]->codec;
|
|
stream = &asf->streams[pkt->stream_index];
|
|
|
|
if(codec->codec_type == CODEC_TYPE_AUDIO)
|
|
flags &= ~PKT_FLAG_KEY;
|
|
|
|
pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
|
|
assert(pts != AV_NOPTS_VALUE);
|
|
duration = pts * 10000;
|
|
asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000);
|
|
|
|
packet_st = asf->nb_packets;
|
|
put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags);
|
|
|
|
/* check index */
|
|
if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) {
|
|
start_sec = (int)(duration / INT64_C(10000000));
|
|
if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
|
|
for(i=asf->nb_index_count;i<start_sec;i++) {
|
|
if (i>=asf->nb_index_memory_alloc) {
|
|
asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
|
|
asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
|
|
}
|
|
// store
|
|
asf->index_ptr[i].packet_number = (uint32_t)packet_st;
|
|
asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
|
|
asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st));
|
|
}
|
|
asf->nb_index_count = start_sec;
|
|
asf->last_indexed_pts = duration;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int i;
|
|
|
|
put_guid(pb, &simple_index_header);
|
|
put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
|
|
put_guid(pb, &my_guid);
|
|
put_le64(pb, ASF_INDEXED_INTERVAL);
|
|
put_le32(pb, max);
|
|
put_le32(pb, count);
|
|
for(i=0; i<count; i++) {
|
|
put_le32(pb, index[i].packet_number);
|
|
put_le16(pb, index[i].packet_count);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int asf_write_trailer(AVFormatContext *s)
|
|
{
|
|
ASFContext *asf = s->priv_data;
|
|
int64_t file_size,data_size;
|
|
|
|
/* flush the current packet */
|
|
if (asf->pb.buf_ptr > asf->pb.buffer)
|
|
flush_packet(s);
|
|
|
|
/* write index */
|
|
data_size = url_ftell(s->pb);
|
|
if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
|
|
asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
|
|
}
|
|
put_flush_packet(s->pb);
|
|
|
|
if (asf->is_streamed || url_is_streamed(s->pb)) {
|
|
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, data_size - asf->data_offset);
|
|
}
|
|
|
|
put_flush_packet(s->pb);
|
|
av_free(asf->index_ptr);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_ASF_MUXER
|
|
AVOutputFormat asf_muxer = {
|
|
"asf",
|
|
NULL_IF_CONFIG_SMALL("ASF format"),
|
|
"video/x-ms-asf",
|
|
"asf,wmv,wma",
|
|
sizeof(ASFContext),
|
|
#ifdef CONFIG_LIBMP3LAME
|
|
CODEC_ID_MP3,
|
|
#else
|
|
CODEC_ID_MP2,
|
|
#endif
|
|
CODEC_ID_MSMPEG4V3,
|
|
asf_write_header,
|
|
asf_write_packet,
|
|
asf_write_trailer,
|
|
.flags = AVFMT_GLOBALHEADER,
|
|
.codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_ASF_STREAM_MUXER
|
|
AVOutputFormat asf_stream_muxer = {
|
|
"asf_stream",
|
|
NULL_IF_CONFIG_SMALL("ASF format"),
|
|
"video/x-ms-asf",
|
|
"asf,wmv,wma",
|
|
sizeof(ASFContext),
|
|
#ifdef CONFIG_LIBMP3LAME
|
|
CODEC_ID_MP3,
|
|
#else
|
|
CODEC_ID_MP2,
|
|
#endif
|
|
CODEC_ID_MSMPEG4V3,
|
|
asf_write_stream_header,
|
|
asf_write_packet,
|
|
asf_write_trailer,
|
|
.flags = AVFMT_GLOBALHEADER,
|
|
.codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0},
|
|
};
|
|
#endif //CONFIG_ASF_STREAM_MUXER
|