[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_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') },
    { 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); /* 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, 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);
}

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