rename asf-enc.c to asfenc.c and asf.c to asfdec.c for consistency

Originally committed as revision 17618 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 880 insertions, 0 deletions

diff --git a/libavformat/asfenc.c b/libavformat/asfenc.c
new file mode 100644
index 0000000000..ae6cc2d09a
--- /dev/null
+++ b/libavformat/asfenc.c
@@ -0,0 +1,880 @@
+/*
+ * ASF muxer
+ * 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
+ */
+#include "avformat.h"
+#include "metadata.h"
+#include "riff.h"
+#include "asf.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+
+#define ASF_INDEXED_INTERVAL    10000000
+#define ASF_INDEX_BLOCK         600
+
+#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
+#define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
+                ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
+                ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
+                )
+
+#if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
+#   define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
+#else
+#   define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
+#endif
+
+#define ASF_PPI_PROPERTY_FLAGS (\
+                ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
+                ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
+                ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
+                ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
+                )
+
+#define ASF_PPI_LENGTH_TYPE_FLAGS 0
+
+#define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
+
+#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
+#   define ASF_PPI_SEQUENCE_FIELD_SIZE 1
+#endif
+#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
+#   define ASF_PPI_SEQUENCE_FIELD_SIZE 2
+#endif
+#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
+#   define ASF_PPI_SEQUENCE_FIELD_SIZE 4
+#endif
+#ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
+#   define ASF_PPI_SEQUENCE_FIELD_SIZE 0
+#endif
+
+
+#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
+#endif
+#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
+#endif
+#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
+#endif
+#ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
+#   define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
+#endif
+
+#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
+#endif
+#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
+#endif
+#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
+#   define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
+#endif
+#ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
+#   define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
+#endif
+
+#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
+#endif
+#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
+#endif
+#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
+#endif
+#ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
+#   define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
+#endif
+
+#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))
+#   define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
+#endif
+#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))
+#   define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
+#endif
+#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))
+#   define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
+#endif
+#ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
+#   define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
+#endif
+
+#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
+#endif
+#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
+#endif
+#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
+#endif
+#ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
+#   define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
+#endif
+
+#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
+#endif
+#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
+#   define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
+#endif
+#ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
+#   define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
+#endif
+
+#define PACKET_HEADER_MIN_SIZE (\
+                ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
+                ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
+                1 + /*Length Type Flags*/ \
+                1 + /*Property Flags*/ \
+                ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
+                ASF_PPI_SEQUENCE_FIELD_SIZE + \
+                ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
+                4 + /*Send Time Field*/ \
+                2   /*Duration Field*/ \
+                )
+
+
+// Replicated Data shall be at least 8 bytes long.
+#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
+
+#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
+                1 + /*Stream Number*/ \
+                ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
+                ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
+                ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
+                ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
+                )
+
+#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\
+                1 + /*Stream Number*/ \
+                ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
+                ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
+                ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
+                ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
+                ASF_PAYLOAD_LENGTH_FIELD_SIZE \
+                )
+
+#define SINGLE_PAYLOAD_DATA_LENGTH (\
+                PACKET_SIZE - \
+                PACKET_HEADER_MIN_SIZE - \
+                PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
+                )
+
+#define MULTI_PAYLOAD_CONSTANT (\
+                PACKET_SIZE - \
+                PACKET_HEADER_MIN_SIZE - \
+                1 - /*Payload Flags*/ \
+                2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
+                )
+
+static const AVCodecTag codec_asf_bmp_tags[] = {
+    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
+    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
+    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
+    { CODEC_ID_NONE, 0 },
+};
+
+#define PREROLL_TIME 3100
+
+static void put_guid(ByteIOContext *s, const GUID *g)
+{
+    assert(sizeof(*g) == 16);
+    put_buffer(s, *g, sizeof(*g));
+}
+
+static void put_str16_nolen(ByteIOContext *s, const char *tag);
+static void put_str16(ByteIOContext *s, const char *tag)
+{
+    put_le16(s,strlen(tag) + 1);
+    put_str16_nolen(s, tag);
+}
+
+static void put_str16_nolen(ByteIOContext *s, const char *tag)
+{
+    int c;
+
+    do{
+        c = (uint8_t)*tag++;
+        put_le16(s, c);
+    }while(c);
+}
+
+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);    //size
+    put_le32(pb, asf->seqno);//sequence number
+    put_le16(pb, flags); /* unknown bytes */
+    put_le16(pb, length);    //size_confirm
+    asf->seqno++;
+}
+
+/* convert from unix to windows time */
+static int64_t unix_to_file_time(int ti)
+{
+    int64_t t;
+
+    t = ti * INT64_C(10000000);
+    t += INT64_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;
+    AVMetadataTag *title, *author, *copyright, *comment;
+    int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
+    int has_title;
+    int metadata_count;
+    AVCodecContext *enc;
+    int64_t header_offset, cur_pos, hpos;
+    int bit_rate;
+    int64_t duration;
+
+    title     = av_metadata_get(s->metadata, "title"    , NULL, 0);
+    author    = av_metadata_get(s->metadata, "author"   , NULL, 0);
+    copyright = av_metadata_get(s->metadata, "copyright", NULL, 0);
+    comment   = av_metadata_get(s->metadata, "comment"  , NULL, 0);
+
+    duration = asf->duration + PREROLL_TIME * 10000;
+    has_title = title || author || copyright || comment;
+    metadata_count = s->metadata ? s->metadata->count : 0;
+
+    bit_rate = 0;
+    for(n=0;n<s->nb_streams;n++) {
+        enc = s->streams[n]->codec;
+
+        av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
+
+        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 + !!metadata_count + 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, duration); /* end time stamp (in 100ns units) */
+    put_le64(pb, asf->duration); /* duration (in 100ns units) */
+    put_le64(pb, PREROLL_TIME); /* start time stamp */
+    put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */
+    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, title     ? 2 * (strlen(title->value    ) + 1) : 0);
+        put_le16(pb, author    ? 2 * (strlen(author->value   ) + 1) : 0);
+        put_le16(pb, copyright ? 2 * (strlen(copyright->value) + 1) : 0);
+        put_le16(pb, comment   ? 2 * (strlen(comment->value  ) + 1) : 0);
+        put_le16(pb, 0);
+        if (title    ) put_str16_nolen(pb, title->value    );
+        if (author   ) put_str16_nolen(pb, author->value   );
+        if (copyright) put_str16_nolen(pb, copyright->value);
+        if (comment  ) put_str16_nolen(pb, comment->value  );
+        end_header(pb, hpos);
+    }
+    if (metadata_count) {
+        AVMetadataTag *tag = NULL;
+        hpos = put_header(pb, &extended_content_header);
+        put_le16(pb, metadata_count);
+        while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
+            put_le16(pb, 2*(strlen(tag->key) + 3) + 1);
+            put_le16(pb, 'W');
+            put_le16(pb, 'M');
+            put_le16(pb, '/');
+            put_str16_nolen(pb, tag->key);
+            put_le16(pb, 0);
+            put_le16(pb, 2*strlen(tag->value) + 1);
+            put_str16_nolen(pb, tag->value);
+        }
+        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 = 8;
+            break;
+        default:
+        case CODEC_TYPE_VIDEO:
+            wav_extra_size = enc->extradata_size;
+            extra_size = 0x33 + wav_extra_size;
+            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_spread);
+        } 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 ((enc->codec_id != CODEC_ID_MP3) && (enc->codec_id != CODEC_ID_MP2) && (enc->codec_id != CODEC_ID_ADPCM_IMA_WAV) && (enc->extradata_size==0)) {
+                wavsize += 2;
+                put_le16(pb, 0);
+            }
+
+            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);
+            }
+            /* ERROR Correction */
+            put_byte(pb, 0x01);
+            if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
+                put_le16(pb, 0x0190);
+                put_le16(pb, 0x0190);
+            }else{
+                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;
+}
+
+#if CONFIG_ASF_MUXER
+AVOutputFormat asf_muxer = {
+    "asf",
+    NULL_IF_CONFIG_SMALL("ASF format"),
+    "video/x-ms-asf",
+    "asf,wmv,wma",
+    sizeof(ASFContext),
+#if 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
+
+#if 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),
+#if 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