[libav.git] / libavformat / avienc.c

/*
 * AVI encoder.
 * Copyright (c) 2000 Fabrice Bellard.
 *
 * This library 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 of the License, or (at your option) any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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, const 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_t)(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. */
const 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'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('x', 'v', 'i', 'd'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's'), .invalid_asf = 1 },
    { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
    { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
    { CODEC_ID_MPEG4, MKTAG('m', '4', 's', '2') },
    { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
    { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
    { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '3'), .invalid_asf = 1 },
    { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, 
    { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') }, 
    { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') }, 
    { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') }, 
    { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') }, 
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') }, 
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') }, 
    { CODEC_ID_DVVIDEO, MKTAG('D', 'V', 'S', 'D') }, 
    { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') }, 
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') }, 
    { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') }, 
    { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') }, 
    { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
    { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
    { CODEC_ID_HUFFYUV, MKTAG('h', 'f', 'y', 'u') },
    { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
    { CODEC_ID_CYUV, MKTAG('c', 'y', 'u', 'v') },
    { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
    { 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;
}

static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
{
    while (tags->id != 0) {
        if (!tags->invalid_asf && 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, const CodecTag *tags, int for_asf)
{
    put_le32(pb, 40 + enc->extradata_size); /* size */
    put_le32(pb, enc->width);
    put_le32(pb, enc->height);
    put_le16(pb, 1); /* planes */
    
    put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
    /* compression type */
    put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : 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);
    
    put_buffer(pb, enc->extradata, enc->extradata_size);

    if (enc->extradata_size & 1)
        put_byte(pb, 0);
}

static 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 = s->priv_data;
    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;

    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;
    }
    
/*	allowing audio-only AVI file 
    
    if (!video_enc) {
        av_free(avi);
        return -1;
    }
*/    
    nb_frames = 0;

    if(video_enc){
        put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
    } else {
	put_le32(pb, 0);
    }
    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 */
    if(video_enc){    
    put_le32(pb, video_enc->width);
    put_le32(pb, video_enc->height);
    } else {
	put_le32(pb, 0);
	put_le32(pb, 0);
    }	
    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;

        /* FourCC should really be set by the codec itself */
        if (! stream->codec_tag) {
            stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
        }

        /* stream generic header */
        strh = start_tag(pb, "strh");
        switch(stream->codec_type) {
        case CODEC_TYPE_VIDEO:
            put_tag(pb, "vids");
            put_le32(pb, stream->codec_tag);
            put_le32(pb, 0); /* flags */
            put_le16(pb, 0); /* priority */
            put_le16(pb, 0); /* language */
            put_le32(pb, 0); /* initial frame */
            
            put_le32(pb, stream->frame_rate_base); /* scale */
            put_le32(pb, stream->frame_rate); /* 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:
            av_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, 0);
            break;
        case CODEC_TYPE_AUDIO:
            if (put_wav_header(pb, stream) < 0) {
                av_free(avi);
                return -1;
            }
            break;
        default:
            av_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_t *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->coded_frame->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_t)(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);
    return 0;
}

static AVOutputFormat avi_oformat = {
    "avi",
    "avi format",
    "video/x-msvideo",
    "avi",
    sizeof(AVIContext),
    CODEC_ID_MP2,
    CODEC_ID_MSMPEG4V3,
    avi_write_header,
    avi_write_packet,
    avi_write_trailer,
};

int avienc_init(void)
{
    av_register_output_format(&avi_oformat);
    return 0;
}
Commit	Line	Data
de6d9b64 FB	1	/*
de6d9b64 FB	2	* AVI encoder.
19720f15	3	* Copyright (c) 2000 Fabrice Bellard.
de6d9b64	4	*
19720f15 FB	5	* This library is free software; you can redistribute it and/or
	6	* modify it under the terms of the GNU Lesser General Public
	7	* License as published by the Free Software Foundation; either
	8	* version 2 of the License, or (at your option) any later version.
de6d9b64	9	*
19720f15	10	* This library is distributed in the hope that it will be useful,
de6d9b64	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15 FB	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19720f15 FB	13	* Lesser General Public License for more details.
de6d9b64	14	*
19720f15 FB	15	* You should have received a copy of the GNU Lesser General Public
	16	* License along with this library; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
de6d9b64	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
0570bf06	39	offset_t start_tag(ByteIOContext pb, const char tag)
de6d9b64 FB	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);
0c1a9eda	52	put_le32(pb, (uint32_t)(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. */
0570bf06	58	const 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') },
b1d89f82 MR	63	{ CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
	64	{ CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x'), .invalid_asf = 1 },
	65	{ CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
	66	{ CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
	67	{ CODEC_ID_MPEG4, MKTAG('x', 'v', 'i', 'd'), .invalid_asf = 1 },
	68	{ CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's'), .invalid_asf = 1 },
390dffc5 MN	69	{ CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
	70	{ CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
	71	{ CODEC_ID_MPEG4, MKTAG('m', '4', 's', '2') },
58f26ba9	72	{ CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
b1d89f82	73	{ CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
8a555875	74	{ CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '3'), .invalid_asf = 1 },
bb3debab GV	75	{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
bb3debab GV	76	{ CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
9b030d9d MN	77	{ CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
9b030d9d MN	78	{ CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
e23d5712	79	{ CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
020fcc94 FB	80	{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
020fcc94 FB	81	{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
f20dca40	82	{ CODEC_ID_DVVIDEO, MKTAG('D', 'V', 'S', 'D') },
020fcc94	83	{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
1cbc2890 FB	84	{ CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
	85	{ CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
	86	{ CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
bb15f7fd	87	{ CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
f560dd82 MN	88	{ CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
f560dd82 MN	89	{ CODEC_ID_HUFFYUV, MKTAG('h', 'f', 'y', 'u') },
1e711bd6 MM	90	{ CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
1e711bd6 MM	91	{ CODEC_ID_CYUV, MKTAG('c', 'y', 'u', 'v') },
e8750b00	92	{ CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
de6d9b64 FB	93	{ 0, 0 },
	94	};
	95
a266644f	96	unsigned int codec_get_tag(const CodecTag *tags, int id)
de6d9b64 FB	97	{
	98	while (tags->id != 0) {
	99	if (tags->id == id)
	100	return tags->tag;
	101	tags++;
	102	}
	103	return 0;
	104	}
	105
2727c35e PG	106	static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
	107	{
	108	while (tags->id != 0) {
	109	if (!tags->invalid_asf && tags->id == id)
	110	return tags->tag;
	111	tags++;
	112	}
	113	return 0;
	114	}
	115
a266644f	116	int codec_get_id(const CodecTag *tags, unsigned int tag)
de6d9b64 FB	117	{
	118	while (tags->id != 0) {
	119	if (tags->tag == tag)
	120	return tags->id;
	121	tags++;
	122	}
	123	return 0;
	124	}
	125
	126	unsigned int codec_get_bmp_tag(int id)
	127	{
	128	return codec_get_tag(codec_bmp_tags, id);
	129	}
	130
	131	/* BITMAPINFOHEADER header */
0570bf06	132	void put_bmp_header(ByteIOContext pb, AVCodecContext enc, const CodecTag *tags, int for_asf)
de6d9b64	133	{
952c69c4	134	put_le32(pb, 40 + enc->extradata_size); /* size */
de6d9b64 FB	135	put_le32(pb, enc->width);
	136	put_le32(pb, enc->height);
	137	put_le16(pb, 1); /* planes */
952c69c4 MN	138
952c69c4 MN	139	put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
de6d9b64	140	/* compression type */
2727c35e	141	put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : codec_get_tag(tags, enc->codec_id));
de6d9b64 FB	142	put_le32(pb, enc->width * enc->height * 3);
	143	put_le32(pb, 0);
	144	put_le32(pb, 0);
	145	put_le32(pb, 0);
	146	put_le32(pb, 0);
952c69c4 MN	147
	148	put_buffer(pb, enc->extradata, enc->extradata_size);
	149
	150	if (enc->extradata_size & 1)
	151	put_byte(pb, 0);
de6d9b64 FB	152	}
de6d9b64 FB	153
0570bf06	154	static void parse_specific_params(AVCodecContext stream, int au_byterate, int au_ssize, int au_scale)
86bec9a1 J	155	{
	156	switch(stream->codec_id) {
	157	case CODEC_ID_PCM_S16LE:
	158	au_scale = au_ssize = 2*stream->channels;
	159	au_byterate = au_ssize * stream->sample_rate;
	160	break;
	161	case CODEC_ID_PCM_U8:
	162	case CODEC_ID_PCM_ALAW:
	163	case CODEC_ID_PCM_MULAW:
	164	au_scale = au_ssize = stream->channels;
	165	au_byterate = au_ssize * stream->sample_rate;
	166	break;
	167	case CODEC_ID_MP2:
	168	*au_ssize = 1;
	169	*au_scale = 1;
	170	*au_byterate = stream->bit_rate / 8;
5798368b J	171	case CODEC_ID_MP3LAME:
	172	*au_ssize = 1;
	173	*au_scale = 1;
	174	*au_byterate = stream->bit_rate / 8;
86bec9a1 J	175	default:
	176	*au_ssize = 1;
	177	*au_scale = 1;
	178	*au_byterate = stream->bit_rate / 8;
	179	break;
	180	}
	181	}
	182
de6d9b64 FB	183	static int avi_write_header(AVFormatContext *s)
de6d9b64 FB	184	{
c9a65ca8	185	AVIContext *avi = s->priv_data;
de6d9b64	186	ByteIOContext *pb = &s->pb;
86bec9a1	187	int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
de6d9b64 FB	188	AVCodecContext stream, video_enc;
	189	offset_t list1, list2, strh, strf;
	190
de6d9b64 FB	191	put_tag(pb, "RIFF");
	192	put_le32(pb, 0); /* file length */
	193	put_tag(pb, "AVI ");
	194
	195	/* header list */
	196	list1 = start_tag(pb, "LIST");
	197	put_tag(pb, "hdrl");
	198
	199	/* avi header */
	200	put_tag(pb, "avih");
	201	put_le32(pb, 14 * 4);
	202	bitrate = 0;
	203
	204	video_enc = NULL;
	205	for(n=0;n<s->nb_streams;n++) {
	206	stream = &s->streams[n]->codec;
	207	bitrate += stream->bit_rate;
	208	if (stream->codec_type == CODEC_TYPE_VIDEO)
	209	video_enc = stream;
	210	}
	211
850742d7 AR	212	/* allowing audio-only AVI file
850742d7 AR	213
de6d9b64	214	if (!video_enc) {
1ea4f593	215	av_free(avi);
de6d9b64 FB	216	return -1;
de6d9b64 FB	217	}
850742d7	218	*/
de6d9b64 FB	219	nb_frames = 0;
de6d9b64 FB	220
850742d7	221	if(video_enc){
14bea432	222	put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
850742d7 AR	223	} else {
	224	put_le32(pb, 0);
	225	}
de6d9b64 FB	226	put_le32(pb, bitrate / 8); /* XXX: not quite exact */
	227	put_le32(pb, 0); /* padding */
	228	put_le32(pb, AVIF_TRUSTCKTYPE \| AVIF_HASINDEX \| AVIF_ISINTERLEAVED); /* flags */
86bec9a1	229	avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	230	put_le32(pb, nb_frames); /* nb frames, filled later */
	231	put_le32(pb, 0); /* initial frame */
	232	put_le32(pb, s->nb_streams); /* nb streams */
	233	put_le32(pb, 1024 * 1024); /* suggested buffer size */
850742d7	234	if(video_enc){
de6d9b64 FB	235	put_le32(pb, video_enc->width);
de6d9b64 FB	236	put_le32(pb, video_enc->height);
850742d7 AR	237	} else {
	238	put_le32(pb, 0);
	239	put_le32(pb, 0);
	240	}
de6d9b64 FB	241	put_le32(pb, 0); /* reserved */
	242	put_le32(pb, 0); /* reserved */
	243	put_le32(pb, 0); /* reserved */
	244	put_le32(pb, 0); /* reserved */
	245
	246	/* stream list */
	247	for(i=0;i<n;i++) {
	248	list2 = start_tag(pb, "LIST");
	249	put_tag(pb, "strl");
	250
	251	stream = &s->streams[i]->codec;
	252
e8750b00 FR	253	/* FourCC should really be set by the codec itself */
	254	if (! stream->codec_tag) {
	255	stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
	256	}
	257
de6d9b64 FB	258	/* stream generic header */
	259	strh = start_tag(pb, "strh");
	260	switch(stream->codec_type) {
	261	case CODEC_TYPE_VIDEO:
	262	put_tag(pb, "vids");
e8750b00	263	put_le32(pb, stream->codec_tag);
de6d9b64 FB	264	put_le32(pb, 0); /* flags */
	265	put_le16(pb, 0); /* priority */
	266	put_le16(pb, 0); /* language */
	267	put_le32(pb, 0); /* initial frame */
b559b29b	268
14bea432 MN	269	put_le32(pb, stream->frame_rate_base); /* scale */
14bea432 MN	270	put_le32(pb, stream->frame_rate); /* rate */
b559b29b	271
de6d9b64	272	put_le32(pb, 0); /* start */
86bec9a1	273	avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	274	put_le32(pb, nb_frames); /* length, XXX: fill later */
de6d9b64 FB	275	put_le32(pb, 1024 * 1024); /* suggested buffer size */
86bec9a1	276	put_le32(pb, -1); /* quality */
de6d9b64 FB	277	put_le32(pb, stream->width * stream->height * 3); /* sample size */
	278	put_le16(pb, 0);
	279	put_le16(pb, 0);
	280	put_le16(pb, stream->width);
	281	put_le16(pb, stream->height);
	282	break;
	283	case CODEC_TYPE_AUDIO:
	284	put_tag(pb, "auds");
86bec9a1	285	put_le32(pb, 1); /* tag */
de6d9b64 FB	286	put_le32(pb, 0); /* flags */
	287	put_le16(pb, 0); /* priority */
	288	put_le16(pb, 0); /* language */
	289	put_le32(pb, 0); /* initial frame */
86bec9a1 J	290	parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
	291	put_le32(pb, au_scale); /* scale */
	292	put_le32(pb, au_byterate); /* rate */
de6d9b64	293	put_le32(pb, 0); /* start */
86bec9a1	294	avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64 FB	295	put_le32(pb, 0); /* length, XXX: filled later */
	296	put_le32(pb, 12 * 1024); /* suggested buffer size */
	297	put_le32(pb, -1); /* quality */
86bec9a1	298	put_le32(pb, au_ssize); /* sample size */
de6d9b64 FB	299	put_le32(pb, 0);
	300	put_le32(pb, 0);
	301	break;
53cafac0	302	default:
42343f7e	303	av_abort();
de6d9b64 FB	304	}
	305	end_tag(pb, strh);
	306
	307	strf = start_tag(pb, "strf");
	308	switch(stream->codec_type) {
	309	case CODEC_TYPE_VIDEO:
2727c35e	310	put_bmp_header(pb, stream, codec_bmp_tags, 0);
de6d9b64 FB	311	break;
de6d9b64 FB	312	case CODEC_TYPE_AUDIO:
46a3d068	313	if (put_wav_header(pb, stream) < 0) {
1ea4f593	314	av_free(avi);
46a3d068 FB	315	return -1;
46a3d068 FB	316	}
de6d9b64	317	break;
53cafac0	318	default:
42343f7e	319	av_abort();
de6d9b64 FB	320	}
	321	end_tag(pb, strf);
	322	end_tag(pb, list2);
	323	}
	324
	325	end_tag(pb, list1);
	326
	327	avi->movi_list = start_tag(pb, "LIST");
	328	avi->first = NULL;
	329	avi->last = NULL;
	330	put_tag(pb, "movi");
	331
	332	put_flush_packet(pb);
	333
	334	return 0;
	335	}
	336
	337	static int avi_write_packet(AVFormatContext *s, int stream_index,
0c1a9eda	338	uint8_t *buf, int size, int force_pts)
de6d9b64 FB	339	{
	340	AVIContext *avi = s->priv_data;
	341	ByteIOContext *pb = &s->pb;
	342	AVIIndex *idx;
	343	unsigned char tag[5];
	344	unsigned int flags;
	345	AVCodecContext *enc;
	346
	347	enc = &s->streams[stream_index]->codec;
	348
	349	tag[0] = '0';
	350	tag[1] = '0' + stream_index;
	351	if (enc->codec_type == CODEC_TYPE_VIDEO) {
	352	tag[2] = 'd';
	353	tag[3] = 'c';
492cd3a9	354	flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
de6d9b64 FB	355	} else {
	356	tag[2] = 'w';
	357	tag[3] = 'b';
	358	flags = 0x10;
	359	}
86bec9a1 J	360	if (enc->codec_type == CODEC_TYPE_AUDIO)
86bec9a1 J	361	avi->audio_strm_length[stream_index] += size;
de6d9b64 FB	362
de6d9b64 FB	363	if (!url_is_streamed(&s->pb)) {
1ea4f593	364	idx = av_malloc(sizeof(AVIIndex));
de6d9b64 FB	365	memcpy(idx->tag, tag, 4);
	366	idx->flags = flags;
	367	idx->pos = url_ftell(pb) - avi->movi_list;
	368	idx->len = size;
	369	idx->next = NULL;
	370	if (!avi->last)
	371	avi->first = idx;
	372	else
	373	avi->last->next = idx;
	374	avi->last = idx;
	375	}
	376
	377	put_buffer(pb, tag, 4);
	378	put_le32(pb, size);
	379	put_buffer(pb, buf, size);
	380	if (size & 1)
	381	put_byte(pb, 0);
	382
	383	put_flush_packet(pb);
	384	return 0;
	385	}
	386
	387	static int avi_write_trailer(AVFormatContext *s)
	388	{
	389	ByteIOContext *pb = &s->pb;
	390	AVIContext *avi = s->priv_data;
	391	offset_t file_size, idx_chunk;
86bec9a1 J	392	int n, nb_frames, au_byterate, au_ssize, au_scale;
86bec9a1 J	393	AVCodecContext *stream;
de6d9b64 FB	394	AVIIndex *idx;
	395
	396	if (!url_is_streamed(&s->pb)) {
	397	end_tag(pb, avi->movi_list);
	398
	399	idx_chunk = start_tag(pb, "idx1");
	400	idx = avi->first;
	401	while (idx != NULL) {
	402	put_buffer(pb, idx->tag, 4);
	403	put_le32(pb, idx->flags);
	404	put_le32(pb, idx->pos);
	405	put_le32(pb, idx->len);
	406	idx = idx->next;
	407	}
	408	end_tag(pb, idx_chunk);
	409
	410	/* update file size */
	411	file_size = url_ftell(pb);
	412	url_fseek(pb, 4, SEEK_SET);
0c1a9eda	413	put_le32(pb, (uint32_t)(file_size - 8));
86bec9a1 J	414
	415	/* Fill in frame/sample counters */
	416	nb_frames = 0;
	417	for(n=0;n<s->nb_streams;n++) {
	418	if (avi->frames_hdr_strm[n] != 0) {
	419	stream = &s->streams[n]->codec;
	420	url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
	421	if (stream->codec_type == CODEC_TYPE_VIDEO) {
	422	put_le32(pb, stream->frame_number);
	423	if (nb_frames < stream->frame_number)
	424	nb_frames = stream->frame_number;
	425	} else {
5798368b	426	if (stream->codec_id == CODEC_ID_MP2 \|\| stream->codec_id == CODEC_ID_MP3LAME) {
86bec9a1 J	427	put_le32(pb, stream->frame_number);
	428	nb_frames += stream->frame_number;
	429	} else {
	430	parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
	431	put_le32(pb, avi->audio_strm_length[n] / au_ssize);
	432	}
	433	}
	434	}
	435	}
	436	if (avi->frames_hdr_all != 0) {
	437	url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
	438	put_le32(pb, nb_frames);
	439	}
de6d9b64 FB	440	url_fseek(pb, file_size, SEEK_SET);
	441	}
	442	put_flush_packet(pb);
de6d9b64 FB	443	return 0;
	444	}
	445
c9a65ca8	446	static AVOutputFormat avi_oformat = {
de6d9b64 FB	447	"avi",
	448	"avi format",
	449	"video/x-msvideo",
	450	"avi",
c9a65ca8	451	sizeof(AVIContext),
de6d9b64	452	CODEC_ID_MP2,
d7425f59	453	CODEC_ID_MSMPEG4V3,
de6d9b64 FB	454	avi_write_header,
	455	avi_write_packet,
	456	avi_write_trailer,
de6d9b64	457	};
c9a65ca8 FB	458
	459	int avienc_init(void)
	460	{
	461	av_register_output_format(&avi_oformat);
	462	return 0;
	463	}