adding ffmpeg specific version

1 files changed, 914 insertions, 0 deletions

diff --git a/ffmpeg1/libavformat/asfenc.c b/ffmpeg1/libavformat/asfenc.c
new file mode 100644
index 0000000..f3aec9c
--- /dev/null
+++ b/ffmpeg1/libavformat/asfenc.c
@@ -0,0 +1,914 @@
+/*
+ * 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 "libavutil/dict.h"
+#include "avformat.h"
+#include "avio_internal.h"
+#include "internal.h"
+#include "riff.h"
+#include "asf.h"
+
+#undef NDEBUG
+#include <assert.h>
+
+
+#define ASF_INDEXED_INTERVAL    10000000
+#define ASF_INDEX_BLOCK         (1<<9)
+
+#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)
+
+typedef struct {
+    uint32_t seqno;
+    int is_streamed;
+    ASFStream streams[128];              ///< it's max number and it's not that big
+    /* non streamed additonnal info */
+    uint64_t nb_packets;                 ///< how many packets are there in the file, invalid if broadcasting
+    int64_t duration;                    ///< in 100ns units
+    /* packet filling */
+    unsigned char multi_payloads_present;
+    int packet_size_left;
+    int64_t packet_timestamp_start;
+    int64_t packet_timestamp_end;
+    unsigned int packet_nb_payloads;
+    uint8_t packet_buf[PACKET_SIZE];
+    AVIOContext pb;
+    /* only for reading */
+    uint64_t data_offset;                ///< beginning of the first data packet
+
+    ASFIndex *index_ptr;
+    uint32_t nb_index_memory_alloc;
+    uint16_t maximum_packet;
+    uint32_t next_packet_number;
+    uint16_t next_packet_count;
+    int      next_start_sec;
+    int      end_sec;
+} ASFContext;
+
+static const AVCodecTag codec_asf_bmp_tags[] = {
+    { AV_CODEC_ID_MPEG4,     MKTAG('M', '4', 'S', '2') },
+    { AV_CODEC_ID_MPEG4,     MKTAG('M', 'P', '4', 'S') },
+    { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
+    { AV_CODEC_ID_NONE,      0 },
+};
+
+#define PREROLL_TIME 3100
+
+void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
+{
+    assert(sizeof(*g) == 16);
+    avio_write(s, *g, sizeof(*g));
+}
+
+static void put_str16(AVIOContext *s, const char *tag)
+{
+    int len;
+    uint8_t *pb;
+    AVIOContext *dyn_buf;
+    if (avio_open_dyn_buf(&dyn_buf) < 0)
+        return;
+
+    avio_put_str16le(dyn_buf, tag);
+    len = avio_close_dyn_buf(dyn_buf, &pb);
+    avio_wl16(s, len);
+    avio_write(s, pb, len);
+    av_freep(&pb);
+}
+
+static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
+{
+    int64_t pos;
+
+    pos = avio_tell(pb);
+    ff_put_guid(pb, g);
+    avio_wl64(pb, 24);
+    return pos;
+}
+
+/* update header size */
+static void end_header(AVIOContext *pb, int64_t pos)
+{
+    int64_t pos1;
+
+    pos1 = avio_tell(pb);
+    avio_seek(pb, pos + 16, SEEK_SET);
+    avio_wl64(pb, pos1 - pos);
+    avio_seek(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;
+    AVIOContext *pb = s->pb;
+    int length;
+
+    length = payload_length + 8;
+    avio_wl16(pb, type);
+    avio_wl16(pb, length);      // size
+    avio_wl32(pb, asf->seqno);  // sequence number
+    avio_wl16(pb, flags);       // unknown bytes
+    avio_wl16(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;
+    AVIOContext *pb = s->pb;
+    AVDictionaryEntry *tags[5];
+    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;
+
+    ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
+
+    tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
+    tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
+    tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
+    tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
+    tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
+
+    duration       = asf->duration + PREROLL_TIME * 10000;
+    has_title      = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
+    metadata_count = av_dict_count(s->metadata);
+
+    bit_rate = 0;
+    for (n = 0; n < s->nb_streams; n++) {
+        enc = s->streams[n]->codec;
+
+        avpriv_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) */
+    }
+
+    ff_put_guid(pb, &ff_asf_header);
+    avio_wl64(pb, -1); /* header length, will be patched after */
+    avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
+    avio_w8(pb, 1); /* ??? */
+    avio_w8(pb, 2); /* ??? */
+
+    /* file header */
+    header_offset = avio_tell(pb);
+    hpos          = put_header(pb, &ff_asf_file_header);
+    ff_put_guid(pb, &ff_asf_my_guid);
+    avio_wl64(pb, file_size);
+    file_time = 0;
+    avio_wl64(pb, unix_to_file_time(file_time));
+    avio_wl64(pb, asf->nb_packets); /* number of packets */
+    avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
+    avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
+    avio_wl64(pb, PREROLL_TIME); /* start time stamp */
+    avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2);  /* ??? */
+    avio_wl32(pb, s->packet_size); /* packet size */
+    avio_wl32(pb, s->packet_size); /* packet size */
+    avio_wl32(pb, bit_rate); /* Nominal data rate in bps */
+    end_header(pb, hpos);
+
+    /* unknown headers */
+    hpos = put_header(pb, &ff_asf_head1_guid);
+    ff_put_guid(pb, &ff_asf_head2_guid);
+    avio_wl32(pb, 6);
+    avio_wl16(pb, 0);
+    end_header(pb, hpos);
+
+    /* title and other infos */
+    if (has_title) {
+        int len;
+        uint8_t *buf;
+        AVIOContext *dyn_buf;
+
+        if (avio_open_dyn_buf(&dyn_buf) < 0)
+            return AVERROR(ENOMEM);
+
+        hpos = put_header(pb, &ff_asf_comment_header);
+
+        for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
+            len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
+            avio_wl16(pb, len);
+        }
+        len = avio_close_dyn_buf(dyn_buf, &buf);
+        avio_write(pb, buf, len);
+        av_freep(&buf);
+        end_header(pb, hpos);
+    }
+    if (metadata_count) {
+        AVDictionaryEntry *tag = NULL;
+        hpos = put_header(pb, &ff_asf_extended_content_header);
+        avio_wl16(pb, metadata_count);
+        while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+            put_str16(pb, tag->key);
+            avio_wl16(pb, 0);
+            put_str16(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 = 1;
+
+        switch (enc->codec_type) {
+        case AVMEDIA_TYPE_AUDIO:
+            wav_extra_size = 0;
+            extra_size     = 18 + wav_extra_size;
+            extra_size2    = 8;
+            break;
+        default:
+        case AVMEDIA_TYPE_VIDEO:
+            wav_extra_size = enc->extradata_size;
+            extra_size     = 0x33 + wav_extra_size;
+            extra_size2    = 0;
+            break;
+        }
+
+        hpos = put_header(pb, &ff_asf_stream_header);
+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
+            ff_put_guid(pb, &ff_asf_audio_stream);
+            ff_put_guid(pb, &ff_asf_audio_conceal_spread);
+        } else {
+            ff_put_guid(pb, &ff_asf_video_stream);
+            ff_put_guid(pb, &ff_asf_video_conceal_none);
+        }
+        avio_wl64(pb, 0); /* ??? */
+        es_pos = avio_tell(pb);
+        avio_wl32(pb, extra_size); /* wav header len */
+        avio_wl32(pb, extra_size2); /* additional data len */
+        avio_wl16(pb, n + 1); /* stream number */
+        avio_wl32(pb, 0); /* ??? */
+
+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
+            /* WAVEFORMATEX header */
+            int wavsize = ff_put_wav_header(pb, enc);
+
+            if (wavsize < 0)
+                return -1;
+            if (wavsize != extra_size) {
+                cur_pos = avio_tell(pb);
+                avio_seek(pb, es_pos, SEEK_SET);
+                avio_wl32(pb, wavsize); /* wav header len */
+                avio_seek(pb, cur_pos, SEEK_SET);
+            }
+            /* ERROR Correction */
+            avio_w8(pb, 0x01);
+            if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) {
+                avio_wl16(pb, 0x0190);
+                avio_wl16(pb, 0x0190);
+            } else {
+                avio_wl16(pb, enc->block_align);
+                avio_wl16(pb, enc->block_align);
+            }
+            avio_wl16(pb, 0x01);
+            avio_w8(pb, 0x00);
+        } else {
+            avio_wl32(pb, enc->width);
+            avio_wl32(pb, enc->height);
+            avio_w8(pb, 2); /* ??? */
+            avio_wl16(pb, 40 + enc->extradata_size); /* size */
+
+            /* BITMAPINFOHEADER header */
+            ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
+        }
+        end_header(pb, hpos);
+    }
+
+    /* media comments */
+
+    hpos = put_header(pb, &ff_asf_codec_comment_header);
+    ff_put_guid(pb, &ff_asf_codec_comment1_header);
+    avio_wl32(pb, s->nb_streams);
+    for (n = 0; n < s->nb_streams; n++) {
+        AVCodec *p;
+        const char *desc;
+        int len;
+        uint8_t *buf;
+        AVIOContext *dyn_buf;
+
+        enc = s->streams[n]->codec;
+        p   = avcodec_find_encoder(enc->codec_id);
+
+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
+            avio_wl16(pb, 2);
+        else if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
+            avio_wl16(pb, 1);
+        else
+            avio_wl16(pb, -1);
+
+        if (enc->codec_id == AV_CODEC_ID_WMAV2)
+            desc = "Windows Media Audio V8";
+        else
+            desc = p ? p->name : enc->codec_name;
+
+        if (avio_open_dyn_buf(&dyn_buf) < 0)
+            return AVERROR(ENOMEM);
+
+        avio_put_str16le(dyn_buf, desc);
+        len = avio_close_dyn_buf(dyn_buf, &buf);
+        avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
+
+        avio_write(pb, buf, len);
+        av_freep(&buf);
+
+        avio_wl16(pb, 0); /* no parameters */
+
+        /* id */
+        if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
+            avio_wl16(pb, 2);
+            avio_wl16(pb, enc->codec_tag);
+        } else {
+            avio_wl16(pb, 4);
+            avio_wl32(pb, enc->codec_tag);
+        }
+        if (!enc->codec_tag)
+            return -1;
+    }
+    end_header(pb, hpos);
+
+    /* patch the header size fields */
+
+    cur_pos     = avio_tell(pb);
+    header_size = cur_pos - header_offset;
+    if (asf->is_streamed) {
+        header_size += 8 + 30 + 50;
+
+        avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
+        avio_wl16(pb, header_size);
+        avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
+        avio_wl16(pb, header_size);
+
+        header_size -= 8 + 30 + 50;
+    }
+    header_size += 24 + 6;
+    avio_seek(pb, header_offset - 14, SEEK_SET);
+    avio_wl64(pb, header_size);
+    avio_seek(pb, cur_pos, SEEK_SET);
+
+    /* movie chunk, followed by packets of packet_size */
+    asf->data_offset = cur_pos;
+    ff_put_guid(pb, &ff_asf_data_header);
+    avio_wl64(pb, data_chunk_size);
+    ff_put_guid(pb, &ff_asf_my_guid);
+    avio_wl64(pb, asf->nb_packets); /* nb packets */
+    avio_w8(pb, 1); /* ??? */
+    avio_w8(pb, 1); /* ??? */
+    return 0;
+}
+
+static int asf_write_header(AVFormatContext *s)
+{
+    ASFContext *asf = s->priv_data;
+
+    s->packet_size  = PACKET_SIZE;
+    asf->nb_packets = 0;
+
+    asf->index_ptr             = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
+    asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
+    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;
+    }
+
+    avio_flush(s->pb);
+
+    asf->packet_nb_payloads     = 0;
+    asf->packet_timestamp_start = -1;
+    asf->packet_timestamp_end   = -1;
+    ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
+                      NULL, NULL, NULL, NULL);
+
+    if (s->avoid_negative_ts < 0)
+        s->avoid_negative_ts = 1;
+
+    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 sendtime, unsigned duration,
+                                    int nb_payloads, int padsize)
+{
+    ASFContext *asf = s->priv_data;
+    AVIOContext *pb = s->pb;
+    int ppi_size, i;
+    int64_t start = avio_tell(pb);
+
+    int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
+
+    padsize -= PACKET_HEADER_MIN_SIZE;
+    if (asf->multi_payloads_present)
+        padsize--;
+    assert(padsize >= 0);
+
+    avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
+    for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
+        avio_w8(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;
+    }
+    avio_w8(pb, iLengthTypeFlags);
+
+    avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
+
+    if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
+        avio_wl16(pb, padsize - 2);
+    if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
+        avio_w8(pb, padsize - 1);
+
+    avio_wl32(pb, sendtime);
+    avio_wl16(pb, duration);
+    if (asf->multi_payloads_present)
+        avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
+
+    ppi_size = avio_tell(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, s->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);
+
+    avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
+
+    avio_flush(s->pb);
+    asf->nb_packets++;
+    asf->packet_nb_payloads     = 0;
+    asf->packet_timestamp_start = -1;
+    asf->packet_timestamp_end   = -1;
+    ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
+                      NULL, NULL, NULL, NULL);
+}
+
+static void put_payload_header(AVFormatContext *s, ASFStream *stream,
+                               int64_t presentation_time, int m_obj_size,
+                               int m_obj_offset, int payload_len, int flags)
+{
+    ASFContext *asf = s->priv_data;
+    AVIOContext *pb = &asf->pb;
+    int val;
+
+    val = stream->num;
+    if (flags & AV_PKT_FLAG_KEY)
+        val |= ASF_PL_FLAG_KEY_FRAME;
+    avio_w8(pb, val);
+
+    avio_w8(pb, stream->seq);     // Media object number
+    avio_wl32(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.
+    avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
+
+    avio_wl32(pb, m_obj_size);        // Replicated Data - Media Object Size
+    avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
+
+    if (asf->multi_payloads_present) {
+        avio_wl16(pb, payload_len);   // payload length
+    }
+}
+
+static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
+                      int64_t 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 == AVMEDIA_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);
+            avio_write(&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 void update_index(AVFormatContext *s, int start_sec,
+                         uint32_t packet_number, uint16_t packet_count)
+{
+    ASFContext *asf = s->priv_data;
+
+    if (start_sec > asf->next_start_sec) {
+        int i;
+
+        if (!asf->next_start_sec) {
+            asf->next_packet_number = packet_number;
+            asf->next_packet_count  = packet_count;
+        }
+
+        if (start_sec > asf->nb_index_memory_alloc) {
+            asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
+            asf->index_ptr = av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
+        }
+        for (i = asf->next_start_sec; i < start_sec; i++) {
+            asf->index_ptr[i].packet_number = asf->next_packet_number;
+            asf->index_ptr[i].packet_count  = asf->next_packet_count;
+        }
+    }
+    asf->maximum_packet     = FFMAX(asf->maximum_packet, packet_count);
+    asf->next_packet_number = packet_number;
+    asf->next_packet_count  = packet_count;
+    asf->next_start_sec     = start_sec;
+}
+
+static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    ASFContext *asf = s->priv_data;
+    ASFStream *stream;
+    AVCodecContext *codec;
+    uint32_t packet_number;
+    int64_t pts;
+    int start_sec;
+    int flags = pkt->flags;
+
+    codec  = s->streams[pkt->stream_index]->codec;
+    stream = &asf->streams[pkt->stream_index];
+
+    if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
+        flags &= ~AV_PKT_FLAG_KEY;
+
+    pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
+    assert(pts != AV_NOPTS_VALUE);
+    pts *= 10000;
+    asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
+
+    packet_number = asf->nb_packets;
+    put_frame(s, stream, s->streams[pkt->stream_index],
+              pkt->dts, pkt->data, pkt->size, flags);
+
+    start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
+              / ASF_INDEXED_INTERVAL);
+
+    /* check index */
+    if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
+        uint16_t packet_count = asf->nb_packets - packet_number;
+        update_index(s, start_sec, packet_number, packet_count);
+    }
+    asf->end_sec = start_sec;
+
+    return 0;
+}
+
+static int asf_write_index(AVFormatContext *s, ASFIndex *index,
+                           uint16_t max, uint32_t count)
+{
+    AVIOContext *pb = s->pb;
+    int i;
+
+    ff_put_guid(pb, &ff_asf_simple_index_header);
+    avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
+    ff_put_guid(pb, &ff_asf_my_guid);
+    avio_wl64(pb, ASF_INDEXED_INTERVAL);
+    avio_wl32(pb, max);
+    avio_wl32(pb, count);
+    for (i = 0; i < count; i++) {
+        avio_wl32(pb, index[i].packet_number);
+        avio_wl16(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 = avio_tell(s->pb);
+    if (!asf->is_streamed && asf->next_start_sec) {
+        update_index(s, asf->end_sec + 1, 0, 0);
+        asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
+    }
+    avio_flush(s->pb);
+
+    if (asf->is_streamed || !s->pb->seekable) {
+        put_chunk(s, 0x4524, 0, 0); /* end of stream */
+    } else {
+        /* rewrite an updated header */
+        file_size = avio_tell(s->pb);
+        avio_seek(s->pb, 0, SEEK_SET);
+        asf_write_header1(s, file_size, data_size - asf->data_offset);
+    }
+
+    av_free(asf->index_ptr);
+    return 0;
+}
+
+#if CONFIG_ASF_MUXER
+AVOutputFormat ff_asf_muxer = {
+    .name           = "asf",
+    .long_name      = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
+    .mime_type      = "video/x-ms-asf",
+    .extensions     = "asf,wmv,wma",
+    .priv_data_size = sizeof(ASFContext),
+    .audio_codec    = AV_CODEC_ID_WMAV2,
+    .video_codec    = AV_CODEC_ID_MSMPEG4V3,
+    .write_header   = asf_write_header,
+    .write_packet   = asf_write_packet,
+    .write_trailer  = asf_write_trailer,
+    .flags          = AVFMT_GLOBALHEADER,
+    .codec_tag      = (const AVCodecTag * const []) {
+        codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
+    },
+};
+#endif /* CONFIG_ASF_MUXER */
+
+#if CONFIG_ASF_STREAM_MUXER
+AVOutputFormat ff_asf_stream_muxer = {
+    .name           = "asf_stream",
+    .long_name      = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
+    .mime_type      = "video/x-ms-asf",
+    .extensions     = "asf,wmv,wma",
+    .priv_data_size = sizeof(ASFContext),
+    .audio_codec    = AV_CODEC_ID_WMAV2,
+    .video_codec    = AV_CODEC_ID_MSMPEG4V3,
+    .write_header   = asf_write_stream_header,
+    .write_packet   = asf_write_packet,
+    .write_trailer  = asf_write_trailer,
+    .flags          = AVFMT_GLOBALHEADER,
+    .codec_tag      = (const AVCodecTag * const []) {
+        codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
+    },
+};
+#endif /* CONFIG_ASF_STREAM_MUXER */