[libav.git] / libav / avienc.c

/*
 * AVI encoder.
 * Copyright (c) 2000 Gerard Lantau.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include "avformat.h"
#include "avi.h"

/*
 * TODO: 
 *  - fill all fields if non streamed (nb_frames for example)
 */

typedef struct AVIIndex {
    unsigned char tag[4];
    unsigned int flags, pos, len;
    struct AVIIndex *next;
} AVIIndex;

typedef struct {
    offset_t movi_list, frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
    int audio_strm_length[MAX_STREAMS];
    AVIIndex *first, *last;
} AVIContext;

offset_t start_tag(ByteIOContext *pb, char *tag)
{
    put_tag(pb, tag);
    put_le32(pb, 0);
    return url_ftell(pb);
}

void end_tag(ByteIOContext *pb, offset_t start)
{
    offset_t pos;

    pos = url_ftell(pb);
    url_fseek(pb, start - 4, SEEK_SET);
    put_le32(pb, (UINT32)(pos - start));
    url_fseek(pb, pos, SEEK_SET);
}

/* Note: when encoding, the first matching tag is used, so order is
   important if multiple tags possible for a given codec. */
CodecTag codec_bmp_tags[] = {
    { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
    { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
    { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
    { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
    { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x') },
    { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') }, 
    { 0, 0 },
};

unsigned int codec_get_tag(const CodecTag *tags, int id)
{
    while (tags->id != 0) {
        if (tags->id == id)
            return tags->tag;
        tags++;
    }
    return 0;
}

int codec_get_id(const CodecTag *tags, unsigned int tag)
{
    while (tags->id != 0) {
        if (tags->tag == tag)
            return tags->id;
        tags++;
    }
    return 0;
}

unsigned int codec_get_bmp_tag(int id)
{
    return codec_get_tag(codec_bmp_tags, id);
}

/* BITMAPINFOHEADER header */
void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, CodecTag *tags)
{
    put_le32(pb, 40); /* size */
    put_le32(pb, enc->width);
    put_le32(pb, enc->height);
    put_le16(pb, 1); /* planes */
    put_le16(pb, 24); /* depth */
    /* compression type */
    put_le32(pb, codec_get_tag(tags, enc->codec_id));
    put_le32(pb, enc->width * enc->height * 3);
    put_le32(pb, 0);
    put_le32(pb, 0);
    put_le32(pb, 0);
    put_le32(pb, 0);
}

void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
{
    switch(stream->codec_id) {
    case CODEC_ID_PCM_S16LE:
       *au_scale = *au_ssize = 2*stream->channels;
       *au_byterate = *au_ssize * stream->sample_rate;
        break;
    case CODEC_ID_PCM_U8:
    case CODEC_ID_PCM_ALAW:
    case CODEC_ID_PCM_MULAW:
        *au_scale = *au_ssize = stream->channels;
        *au_byterate = *au_ssize * stream->sample_rate;
        break;
    case CODEC_ID_MP2:
        *au_ssize = 1;
        *au_scale = 1;
        *au_byterate = stream->bit_rate / 8;
    case CODEC_ID_MP3LAME:
        *au_ssize = 1;
        *au_scale = 1;
        *au_byterate = stream->bit_rate / 8;    
    default:
        *au_ssize = 1;
        *au_scale = 1; 
        *au_byterate = stream->bit_rate / 8;
        break;
    }
}

static int avi_write_header(AVFormatContext *s)
{
    AVIContext *avi;
    ByteIOContext *pb = &s->pb;
    int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
    AVCodecContext *stream, *video_enc;
    offset_t list1, list2, strh, strf;

    avi = av_malloc(sizeof(AVIContext));
    if (!avi)
        return -1;
    memset(avi, 0, sizeof(AVIContext));
    s->priv_data = avi;

    put_tag(pb, "RIFF");
    put_le32(pb, 0); /* file length */
    put_tag(pb, "AVI ");

    /* header list */
    list1 = start_tag(pb, "LIST");
    put_tag(pb, "hdrl");

    /* avi header */
    put_tag(pb, "avih");
    put_le32(pb, 14 * 4);
    bitrate = 0;

    video_enc = NULL;
    for(n=0;n<s->nb_streams;n++) {
        stream = &s->streams[n]->codec;
        bitrate += stream->bit_rate;
        if (stream->codec_type == CODEC_TYPE_VIDEO)
            video_enc = stream;
    }
    
    if (!video_enc) {
        av_free(avi);
        return -1;
    }
    nb_frames = 0;

    put_le32(pb, (UINT32)(INT64_C(1000000) * FRAME_RATE_BASE / video_enc->frame_rate));
    put_le32(pb, bitrate / 8); /* XXX: not quite exact */
    put_le32(pb, 0); /* padding */
    put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
    avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
    put_le32(pb, nb_frames); /* nb frames, filled later */
    put_le32(pb, 0); /* initial frame */
    put_le32(pb, s->nb_streams); /* nb streams */
    put_le32(pb, 1024 * 1024); /* suggested buffer size */
    put_le32(pb, video_enc->width);
    put_le32(pb, video_enc->height);
    put_le32(pb, 0); /* reserved */
    put_le32(pb, 0); /* reserved */
    put_le32(pb, 0); /* reserved */
    put_le32(pb, 0); /* reserved */
    
    /* stream list */
    for(i=0;i<n;i++) {
        list2 = start_tag(pb, "LIST");
        put_tag(pb, "strl");
    
        stream = &s->streams[i]->codec;

        /* stream generic header */
        strh = start_tag(pb, "strh");
        switch(stream->codec_type) {
        case CODEC_TYPE_VIDEO:
            put_tag(pb, "vids");
            put_le32(pb, codec_get_bmp_tag(stream->codec_id));
            put_le32(pb, 0); /* flags */
            put_le16(pb, 0); /* priority */
            put_le16(pb, 0); /* language */
            put_le32(pb, 0); /* initial frame */
            put_le32(pb, 1000); /* scale */
            put_le32(pb, (1000 * stream->frame_rate) / FRAME_RATE_BASE); /* rate */
            put_le32(pb, 0); /* start */
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
            put_le32(pb, nb_frames); /* length, XXX: fill later */
            put_le32(pb, 1024 * 1024); /* suggested buffer size */
            put_le32(pb, -1); /* quality */
            put_le32(pb, stream->width * stream->height * 3); /* sample size */
            put_le16(pb, 0);
            put_le16(pb, 0);
            put_le16(pb, stream->width);
            put_le16(pb, stream->height);
            break;
        case CODEC_TYPE_AUDIO:
            put_tag(pb, "auds");
            put_le32(pb, 1); /* tag */
            put_le32(pb, 0); /* flags */
            put_le16(pb, 0); /* priority */
            put_le16(pb, 0); /* language */
            put_le32(pb, 0); /* initial frame */
            parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
            put_le32(pb, au_scale); /* scale */
            put_le32(pb, au_byterate); /* rate */
            put_le32(pb, 0); /* start */
            avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
            put_le32(pb, 0); /* length, XXX: filled later */
            put_le32(pb, 12 * 1024); /* suggested buffer size */
            put_le32(pb, -1); /* quality */
            put_le32(pb, au_ssize); /* sample size */
            put_le32(pb, 0);
            put_le32(pb, 0);
            break;
        default:
            abort();
        }
        end_tag(pb, strh);

        strf = start_tag(pb, "strf");
        switch(stream->codec_type) {
        case CODEC_TYPE_VIDEO:
	    put_bmp_header(pb, stream, codec_bmp_tags);
            break;
        case CODEC_TYPE_AUDIO:
            if (put_wav_header(pb, stream) < 0) {
                av_free(avi);
                return -1;
            }
            break;
        default:
            abort();
        }
        end_tag(pb, strf);
        end_tag(pb, list2);
    }

    end_tag(pb, list1);
    
    avi->movi_list = start_tag(pb, "LIST");
    avi->first = NULL;
    avi->last = NULL;
    put_tag(pb, "movi");

    put_flush_packet(pb);

    return 0;
}

static int avi_write_packet(AVFormatContext *s, int stream_index,
                            UINT8 *buf, int size, int force_pts)
{
    AVIContext *avi = s->priv_data;
    ByteIOContext *pb = &s->pb;
    AVIIndex *idx;
    unsigned char tag[5];
    unsigned int flags;
    AVCodecContext *enc;
    
    enc = &s->streams[stream_index]->codec;

    tag[0] = '0';
    tag[1] = '0' + stream_index;
    if (enc->codec_type == CODEC_TYPE_VIDEO) {
        tag[2] = 'd';
        tag[3] = 'c';
        flags = enc->key_frame ? 0x10 : 0x00;
    } else {
        tag[2] = 'w';
        tag[3] = 'b';
        flags = 0x10;
    }
    if (enc->codec_type == CODEC_TYPE_AUDIO) 
       avi->audio_strm_length[stream_index] += size;

    if (!url_is_streamed(&s->pb)) {
        idx = av_malloc(sizeof(AVIIndex));
        memcpy(idx->tag, tag, 4);
        idx->flags = flags;
        idx->pos = url_ftell(pb) - avi->movi_list;
        idx->len = size;
        idx->next = NULL;
        if (!avi->last)
            avi->first = idx;
        else
            avi->last->next = idx;
        avi->last = idx;
    }
    
    put_buffer(pb, tag, 4);
    put_le32(pb, size);
    put_buffer(pb, buf, size);
    if (size & 1)
        put_byte(pb, 0);

    put_flush_packet(pb);
    return 0;
}

static int avi_write_trailer(AVFormatContext *s)
{
    ByteIOContext *pb = &s->pb;
    AVIContext *avi = s->priv_data;
    offset_t file_size, idx_chunk;
    int n, nb_frames, au_byterate, au_ssize, au_scale;
    AVCodecContext *stream;
    AVIIndex *idx;

    if (!url_is_streamed(&s->pb)) {
        end_tag(pb, avi->movi_list);

        idx_chunk = start_tag(pb, "idx1");
        idx = avi->first;
        while (idx != NULL) {
            put_buffer(pb, idx->tag, 4);
            put_le32(pb, idx->flags);
            put_le32(pb, idx->pos);
            put_le32(pb, idx->len);
            idx = idx->next;
        }
        end_tag(pb, idx_chunk);
        
        /* update file size */
        file_size = url_ftell(pb);
        url_fseek(pb, 4, SEEK_SET);
        put_le32(pb, (UINT32)(file_size - 8));

        /* Fill in frame/sample counters */
        nb_frames = 0;
        for(n=0;n<s->nb_streams;n++) {
            if (avi->frames_hdr_strm[n] != 0) {
                stream = &s->streams[n]->codec;
                url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
                if (stream->codec_type == CODEC_TYPE_VIDEO) {
                    put_le32(pb, stream->frame_number); 
                    if (nb_frames < stream->frame_number)
                        nb_frames = stream->frame_number;
                } else {
                    if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
                        put_le32(pb, stream->frame_number);
                        nb_frames += stream->frame_number;
                    } else {
                        parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
                        put_le32(pb, avi->audio_strm_length[n] / au_ssize);
                    }
                }
            }
       }
       if (avi->frames_hdr_all != 0) {
           url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
           put_le32(pb, nb_frames); 
       }
        url_fseek(pb, file_size, SEEK_SET);
    }
    put_flush_packet(pb);

    av_free(avi);
    return 0;
}

AVFormat avi_format = {
    "avi",
    "avi format",
    "video/x-msvideo",
    "avi",
    CODEC_ID_MP2,
    CODEC_ID_MSMPEG4,
    avi_write_header,
    avi_write_packet,
    avi_write_trailer,

    avi_read_header,
    avi_read_packet,
    avi_read_close,
};
Commit	Line	Data
de6d9b64 FB	1	/*
	2	* AVI encoder.
	3	* Copyright (c) 2000 Gerard Lantau.
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*/
de6d9b64 FB	19	#include "avformat.h"
	20	#include "avi.h"
	21
	22	/*
	23	* TODO:
	24	* - fill all fields if non streamed (nb_frames for example)
	25	*/
	26
	27	typedef struct AVIIndex {
	28	unsigned char tag[4];
	29	unsigned int flags, pos, len;
	30	struct AVIIndex *next;
	31	} AVIIndex;
	32
	33	typedef struct {
86bec9a1 J	34	offset_t movi_list, frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
86bec9a1 J	35	int audio_strm_length[MAX_STREAMS];
de6d9b64 FB	36	AVIIndex first, last;
	37	} AVIContext;
	38
	39	offset_t start_tag(ByteIOContext pb, char tag)
	40	{
	41	put_tag(pb, tag);
	42	put_le32(pb, 0);
	43	return url_ftell(pb);
	44	}
	45
	46	void end_tag(ByteIOContext *pb, offset_t start)
	47	{
	48	offset_t pos;
	49
	50	pos = url_ftell(pb);
	51	url_fseek(pb, start - 4, SEEK_SET);
8be1c656	52	put_le32(pb, (UINT32)(pos - start));
de6d9b64 FB	53	url_fseek(pb, pos, SEEK_SET);
	54	}
	55
	56	/* Note: when encoding, the first matching tag is used, so order is
	57	important if multiple tags possible for a given codec. */
	58	CodecTag codec_bmp_tags[] = {
95c79a24 J	59	{ CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
95c79a24 J	60	{ CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
de6d9b64 FB	61	{ CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
de6d9b64 FB	62	{ CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
58f26ba9 FB	63	{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') },
	64	{ CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x') },
	65	{ CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
bb3debab GV	66	{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3') }, /* default signature when using MSMPEG4 */
	67	{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
	68	{ CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
	69	{ CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', '4', '1') },
de6d9b64 FB	70	{ 0, 0 },
	71	};
	72
a266644f	73	unsigned int codec_get_tag(const CodecTag *tags, int id)
de6d9b64 FB	74	{
	75	while (tags->id != 0) {
	76	if (tags->id == id)
	77	return tags->tag;
	78	tags++;
	79	}
	80	return 0;
	81	}
	82
a266644f	83	int codec_get_id(const CodecTag *tags, unsigned int tag)
de6d9b64 FB	84	{
	85	while (tags->id != 0) {
	86	if (tags->tag == tag)
	87	return tags->id;
	88	tags++;
	89	}
	90	return 0;
	91	}
	92
	93	unsigned int codec_get_bmp_tag(int id)
	94	{
	95	return codec_get_tag(codec_bmp_tags, id);
	96	}
	97
	98	/* BITMAPINFOHEADER header */
502d105f	99	void put_bmp_header(ByteIOContext pb, AVCodecContext enc, CodecTag *tags)
de6d9b64 FB	100	{
	101	put_le32(pb, 40); /* size */
	102	put_le32(pb, enc->width);
	103	put_le32(pb, enc->height);
	104	put_le16(pb, 1); /* planes */
	105	put_le16(pb, 24); /* depth */
	106	/* compression type */
502d105f	107	put_le32(pb, codec_get_tag(tags, enc->codec_id));
de6d9b64 FB	108	put_le32(pb, enc->width * enc->height * 3);
	109	put_le32(pb, 0);
	110	put_le32(pb, 0);
	111	put_le32(pb, 0);
	112	put_le32(pb, 0);
	113	}
	114
86bec9a1 J	115	void parse_specific_params(AVCodecContext stream, int au_byterate, int au_ssize, int au_scale)
	116	{
	117	switch(stream->codec_id) {
	118	case CODEC_ID_PCM_S16LE:
	119	au_scale = au_ssize = 2*stream->channels;
	120	au_byterate = au_ssize * stream->sample_rate;
	121	break;
	122	case CODEC_ID_PCM_U8:
	123	case CODEC_ID_PCM_ALAW:
	124	case CODEC_ID_PCM_MULAW:
	125	au_scale = au_ssize = stream->channels;
	126	au_byterate = au_ssize * stream->sample_rate;
	127	break;
	128	case CODEC_ID_MP2:
	129	*au_ssize = 1;
	130	*au_scale = 1;
	131	*au_byterate = stream->bit_rate / 8;
5798368b J	132	case CODEC_ID_MP3LAME:
	133	*au_ssize = 1;
	134	*au_scale = 1;
	135	*au_byterate = stream->bit_rate / 8;
86bec9a1 J	136	default:
	137	*au_ssize = 1;
	138	*au_scale = 1;
	139	*au_byterate = stream->bit_rate / 8;
	140	break;
	141	}
	142	}
	143
de6d9b64 FB	144	static int avi_write_header(AVFormatContext *s)
	145	{
	146	AVIContext *avi;
	147	ByteIOContext *pb = &s->pb;
86bec9a1	148	int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
de6d9b64 FB	149	AVCodecContext stream, video_enc;
	150	offset_t list1, list2, strh, strf;
	151
1ea4f593	152	avi = av_malloc(sizeof(AVIContext));
de6d9b64 FB	153	if (!avi)
	154	return -1;
	155	memset(avi, 0, sizeof(AVIContext));
	156	s->priv_data = avi;
	157
	158	put_tag(pb, "RIFF");
	159	put_le32(pb, 0); /* file length */
	160	put_tag(pb, "AVI ");
	161
	162	/* header list */
	163	list1 = start_tag(pb, "LIST");
	164	put_tag(pb, "hdrl");
	165
	166	/* avi header */
	167	put_tag(pb, "avih");
	168	put_le32(pb, 14 * 4);
	169	bitrate = 0;
	170
	171	video_enc = NULL;
	172	for(n=0;n<s->nb_streams;n++) {
	173	stream = &s->streams[n]->codec;
	174	bitrate += stream->bit_rate;
	175	if (stream->codec_type == CODEC_TYPE_VIDEO)
	176	video_enc = stream;
	177	}
	178
	179	if (!video_enc) {
1ea4f593	180	av_free(avi);
de6d9b64 FB	181	return -1;
	182	}
	183	nb_frames = 0;
	184
8be1c656	185	put_le32(pb, (UINT32)(INT64_C(1000000) * FRAME_RATE_BASE / video_enc->frame_rate));
de6d9b64 FB	186	put_le32(pb, bitrate / 8); /* XXX: not quite exact */
	187	put_le32(pb, 0); /* padding */
	188	put_le32(pb, AVIF_TRUSTCKTYPE \| AVIF_HASINDEX \| AVIF_ISINTERLEAVED); /* flags */
86bec9a1	189	avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	190	put_le32(pb, nb_frames); /* nb frames, filled later */
	191	put_le32(pb, 0); /* initial frame */
	192	put_le32(pb, s->nb_streams); /* nb streams */
	193	put_le32(pb, 1024 * 1024); /* suggested buffer size */
	194	put_le32(pb, video_enc->width);
	195	put_le32(pb, video_enc->height);
	196	put_le32(pb, 0); /* reserved */
	197	put_le32(pb, 0); /* reserved */
	198	put_le32(pb, 0); /* reserved */
	199	put_le32(pb, 0); /* reserved */
	200
	201	/* stream list */
	202	for(i=0;i<n;i++) {
	203	list2 = start_tag(pb, "LIST");
	204	put_tag(pb, "strl");
	205
	206	stream = &s->streams[i]->codec;
	207
	208	/* stream generic header */
	209	strh = start_tag(pb, "strh");
	210	switch(stream->codec_type) {
	211	case CODEC_TYPE_VIDEO:
	212	put_tag(pb, "vids");
	213	put_le32(pb, codec_get_bmp_tag(stream->codec_id));
	214	put_le32(pb, 0); /* flags */
	215	put_le16(pb, 0); /* priority */
	216	put_le16(pb, 0); /* language */
	217	put_le32(pb, 0); /* initial frame */
	218	put_le32(pb, 1000); /* scale */
	219	put_le32(pb, (1000 * stream->frame_rate) / FRAME_RATE_BASE); /* rate */
	220	put_le32(pb, 0); /* start */
86bec9a1	221	avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	222	put_le32(pb, nb_frames); /* length, XXX: fill later */
de6d9b64 FB	223	put_le32(pb, 1024 * 1024); /* suggested buffer size */
86bec9a1	224	put_le32(pb, -1); /* quality */
de6d9b64 FB	225	put_le32(pb, stream->width * stream->height * 3); /* sample size */
	226	put_le16(pb, 0);
	227	put_le16(pb, 0);
	228	put_le16(pb, stream->width);
	229	put_le16(pb, stream->height);
	230	break;
	231	case CODEC_TYPE_AUDIO:
	232	put_tag(pb, "auds");
86bec9a1	233	put_le32(pb, 1); /* tag */
de6d9b64 FB	234	put_le32(pb, 0); /* flags */
	235	put_le16(pb, 0); /* priority */
	236	put_le16(pb, 0); /* language */
	237	put_le32(pb, 0); /* initial frame */
86bec9a1 J	238	parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
	239	put_le32(pb, au_scale); /* scale */
	240	put_le32(pb, au_byterate); /* rate */
de6d9b64	241	put_le32(pb, 0); /* start */
86bec9a1	242	avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	243	put_le32(pb, 0); /* length, XXX: filled later */
	244	put_le32(pb, 12 * 1024); /* suggested buffer size */
	245	put_le32(pb, -1); /* quality */
86bec9a1	246	put_le32(pb, au_ssize); /* sample size */
de6d9b64 FB	247	put_le32(pb, 0);
	248	put_le32(pb, 0);
	249	break;
53cafac0 PG	250	default:
53cafac0 PG	251	abort();
de6d9b64 FB	252	}
	253	end_tag(pb, strh);
	254
	255	strf = start_tag(pb, "strf");
	256	switch(stream->codec_type) {
	257	case CODEC_TYPE_VIDEO:
502d105f	258	put_bmp_header(pb, stream, codec_bmp_tags);
de6d9b64 FB	259	break;
de6d9b64 FB	260	case CODEC_TYPE_AUDIO:
46a3d068	261	if (put_wav_header(pb, stream) < 0) {
1ea4f593	262	av_free(avi);
46a3d068 FB	263	return -1;
46a3d068 FB	264	}
de6d9b64	265	break;
53cafac0 PG	266	default:
53cafac0 PG	267	abort();
de6d9b64 FB	268	}
	269	end_tag(pb, strf);
	270	end_tag(pb, list2);
	271	}
	272
	273	end_tag(pb, list1);
	274
	275	avi->movi_list = start_tag(pb, "LIST");
	276	avi->first = NULL;
	277	avi->last = NULL;
	278	put_tag(pb, "movi");
	279
	280	put_flush_packet(pb);
	281
	282	return 0;
	283	}
	284
	285	static int avi_write_packet(AVFormatContext *s, int stream_index,
10bb7023	286	UINT8 *buf, int size, int force_pts)
de6d9b64 FB	287	{
	288	AVIContext *avi = s->priv_data;
	289	ByteIOContext *pb = &s->pb;
	290	AVIIndex *idx;
	291	unsigned char tag[5];
	292	unsigned int flags;
	293	AVCodecContext *enc;
	294
	295	enc = &s->streams[stream_index]->codec;
	296
	297	tag[0] = '0';
	298	tag[1] = '0' + stream_index;
	299	if (enc->codec_type == CODEC_TYPE_VIDEO) {
	300	tag[2] = 'd';
	301	tag[3] = 'c';
	302	flags = enc->key_frame ? 0x10 : 0x00;
	303	} else {
	304	tag[2] = 'w';
	305	tag[3] = 'b';
	306	flags = 0x10;
	307	}
86bec9a1 J	308	if (enc->codec_type == CODEC_TYPE_AUDIO)
86bec9a1 J	309	avi->audio_strm_length[stream_index] += size;
de6d9b64 FB	310
de6d9b64 FB	311	if (!url_is_streamed(&s->pb)) {
1ea4f593	312	idx = av_malloc(sizeof(AVIIndex));
de6d9b64 FB	313	memcpy(idx->tag, tag, 4);
	314	idx->flags = flags;
	315	idx->pos = url_ftell(pb) - avi->movi_list;
	316	idx->len = size;
	317	idx->next = NULL;
	318	if (!avi->last)
	319	avi->first = idx;
	320	else
	321	avi->last->next = idx;
	322	avi->last = idx;
	323	}
	324
	325	put_buffer(pb, tag, 4);
	326	put_le32(pb, size);
	327	put_buffer(pb, buf, size);
	328	if (size & 1)
	329	put_byte(pb, 0);
	330
	331	put_flush_packet(pb);
	332	return 0;
	333	}
	334
	335	static int avi_write_trailer(AVFormatContext *s)
	336	{
	337	ByteIOContext *pb = &s->pb;
	338	AVIContext *avi = s->priv_data;
	339	offset_t file_size, idx_chunk;
86bec9a1 J	340	int n, nb_frames, au_byterate, au_ssize, au_scale;
86bec9a1 J	341	AVCodecContext *stream;
de6d9b64 FB	342	AVIIndex *idx;
	343
	344	if (!url_is_streamed(&s->pb)) {
	345	end_tag(pb, avi->movi_list);
	346
	347	idx_chunk = start_tag(pb, "idx1");
	348	idx = avi->first;
	349	while (idx != NULL) {
	350	put_buffer(pb, idx->tag, 4);
	351	put_le32(pb, idx->flags);
	352	put_le32(pb, idx->pos);
	353	put_le32(pb, idx->len);
	354	idx = idx->next;
	355	}
	356	end_tag(pb, idx_chunk);
	357
	358	/* update file size */
	359	file_size = url_ftell(pb);
	360	url_fseek(pb, 4, SEEK_SET);
8be1c656	361	put_le32(pb, (UINT32)(file_size - 8));
86bec9a1 J	362
	363	/* Fill in frame/sample counters */
	364	nb_frames = 0;
	365	for(n=0;n<s->nb_streams;n++) {
	366	if (avi->frames_hdr_strm[n] != 0) {
	367	stream = &s->streams[n]->codec;
	368	url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
	369	if (stream->codec_type == CODEC_TYPE_VIDEO) {
	370	put_le32(pb, stream->frame_number);
	371	if (nb_frames < stream->frame_number)
	372	nb_frames = stream->frame_number;
	373	} else {
5798368b	374	if (stream->codec_id == CODEC_ID_MP2 \|\| stream->codec_id == CODEC_ID_MP3LAME) {
86bec9a1 J	375	put_le32(pb, stream->frame_number);
	376	nb_frames += stream->frame_number;
	377	} else {
	378	parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
	379	put_le32(pb, avi->audio_strm_length[n] / au_ssize);
	380	}
	381	}
	382	}
	383	}
	384	if (avi->frames_hdr_all != 0) {
	385	url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
	386	put_le32(pb, nb_frames);
	387	}
de6d9b64 FB	388	url_fseek(pb, file_size, SEEK_SET);
	389	}
	390	put_flush_packet(pb);
	391
1ea4f593	392	av_free(avi);
de6d9b64 FB	393	return 0;
	394	}
	395
	396	AVFormat avi_format = {
	397	"avi",
	398	"avi format",
	399	"video/x-msvideo",
	400	"avi",
	401	CODEC_ID_MP2,
	402	CODEC_ID_MSMPEG4,
	403	avi_write_header,
	404	avi_write_packet,
	405	avi_write_trailer,
	406
	407	avi_read_header,
	408	avi_read_packet,
	409	avi_read_close,
	410	};