[deb_ffmpeg.git] / ffmpeg / libavformat / oggparseogm.c

/**
    Copyright (C) 2005  Michael Ahlberg, Måns Rullgård

    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use, copy,
    modify, merge, publish, distribute, sublicense, and/or sell copies
    of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
    HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
    WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    DEALINGS IN THE SOFTWARE.
**/

#include <stdlib.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavcodec/get_bits.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "internal.h"
#include "oggdec.h"
#include "riff.h"

static int
ogm_header(AVFormatContext *s, int idx)
{
    struct ogg *ogg = s->priv_data;
    struct ogg_stream *os = ogg->streams + idx;
    AVStream *st = s->streams[idx];
    GetByteContext p;
    uint64_t time_unit;
    uint64_t spu;
    uint32_t size;

    bytestream2_init(&p, os->buf + os->pstart, os->psize);
    if (!(bytestream2_peek_byte(&p) & 1))
        return 0;

    if (bytestream2_peek_byte(&p) == 1) {
        bytestream2_skip(&p, 1);

        if (bytestream2_peek_byte(&p) == 'v'){
            int tag;
            st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
            bytestream2_skip(&p, 8);
            tag = bytestream2_get_le32(&p);
            st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
            st->codec->codec_tag = tag;
        } else if (bytestream2_peek_byte(&p) == 't') {
            st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
            st->codec->codec_id = AV_CODEC_ID_TEXT;
            bytestream2_skip(&p, 12);
        } else {
            uint8_t acid[5] = { 0 };
            int cid;
            st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
            bytestream2_skip(&p, 8);
            bytestream2_get_buffer(&p, acid, 4);
            acid[4] = 0;
            cid = strtol(acid, NULL, 16);
            st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
            // our parser completely breaks AAC in Ogg
            if (st->codec->codec_id != AV_CODEC_ID_AAC)
                st->need_parsing = AVSTREAM_PARSE_FULL;
        }

        size        = bytestream2_get_le32(&p);
        size        = FFMIN(size, os->psize);
        time_unit   = bytestream2_get_le64(&p);
        spu         = bytestream2_get_le64(&p);
        if (!time_unit || !spu) {
            av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
            return AVERROR_INVALIDDATA;
        }

        bytestream2_skip(&p, 4);    /* default_len */
        bytestream2_skip(&p, 8);    /* buffersize + bits_per_sample */

        if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
            st->codec->width = bytestream2_get_le32(&p);
            st->codec->height = bytestream2_get_le32(&p);
            avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
        } else {
            st->codec->channels = bytestream2_get_le16(&p);
            bytestream2_skip(&p, 2); /* block_align */
            st->codec->bit_rate = bytestream2_get_le32(&p) * 8;
            st->codec->sample_rate = spu * 10000000 / time_unit;
            avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
            if (size >= 56 && st->codec->codec_id == AV_CODEC_ID_AAC) {
                bytestream2_skip(&p, 4);
                size -= 4;
            }
            if (size > 52) {
                av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
                size -= 52;
                ff_alloc_extradata(st->codec, size);
                bytestream2_get_buffer(&p, st->codec->extradata, st->codec->extradata_size);
            }
        }
    } else if (bytestream2_peek_byte(&p) == 3) {
        bytestream2_skip(&p, 7);
        if (bytestream2_get_bytes_left(&p) > 1)
            ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
    }

    return 1;
}

static int
ogm_dshow_header(AVFormatContext *s, int idx)
{
    struct ogg *ogg = s->priv_data;
    struct ogg_stream *os = ogg->streams + idx;
    AVStream *st = s->streams[idx];
    uint8_t *p = os->buf + os->pstart;
    uint32_t t;

    if(!(*p & 1))
        return 0;
    if(*p != 1)
        return 1;

    if (os->psize < 100)
        return AVERROR_INVALIDDATA;
    t = AV_RL32(p + 96);

    if(t == 0x05589f80){
        if (os->psize < 184)
            return AVERROR_INVALIDDATA;

        st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
        st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
        avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
        st->codec->width = AV_RL32(p + 176);
        st->codec->height = AV_RL32(p + 180);
    } else if(t == 0x05589f81){
        if (os->psize < 136)
            return AVERROR_INVALIDDATA;

        st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
        st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
        st->codec->channels = AV_RL16(p + 126);
        st->codec->sample_rate = AV_RL32(p + 128);
        st->codec->bit_rate = AV_RL32(p + 132) * 8;
    }

    return 1;
}

static int
ogm_packet(AVFormatContext *s, int idx)
{
    struct ogg *ogg = s->priv_data;
    struct ogg_stream *os = ogg->streams + idx;
    uint8_t *p = os->buf + os->pstart;
    int lb;

    if(*p & 8)
        os->pflags |= AV_PKT_FLAG_KEY;

    lb = ((*p & 2) << 1) | ((*p >> 6) & 3);
    os->pstart += lb + 1;
    os->psize -= lb + 1;

    while (lb--)
        os->pduration += p[lb+1] << (lb*8);

    return 0;
}

const struct ogg_codec ff_ogm_video_codec = {
    .magic = "\001video",
    .magicsize = 6,
    .header = ogm_header,
    .packet = ogm_packet,
    .granule_is_start = 1,
    .nb_header = 2,
};

const struct ogg_codec ff_ogm_audio_codec = {
    .magic = "\001audio",
    .magicsize = 6,
    .header = ogm_header,
    .packet = ogm_packet,
    .granule_is_start = 1,
    .nb_header = 2,
};

const struct ogg_codec ff_ogm_text_codec = {
    .magic = "\001text",
    .magicsize = 5,
    .header = ogm_header,
    .packet = ogm_packet,
    .granule_is_start = 1,
    .nb_header = 2,
};

const struct ogg_codec ff_ogm_old_codec = {
    .magic = "\001Direct Show Samples embedded in Ogg",
    .magicsize = 35,
    .header = ogm_dshow_header,
    .packet = ogm_packet,
    .granule_is_start = 1,
    .nb_header = 1,
};
Commit	Line	Data
	1	/**
	2	Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
	3
	4	Permission is hereby granted, free of charge, to any person
	5	obtaining a copy of this software and associated documentation
	6	files (the "Software"), to deal in the Software without
	7	restriction, including without limitation the rights to use, copy,
	8	modify, merge, publish, distribute, sublicense, and/or sell copies
	9	of the Software, and to permit persons to whom the Software is
	10	furnished to do so, subject to the following conditions:
	11
	12	The above copyright notice and this permission notice shall be
	13	included in all copies or substantial portions of the Software.
	14
	15	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	16	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	17	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	18	NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
	19	HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
	20	WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	22	DEALINGS IN THE SOFTWARE.
	23	**/
	24
	25	#include <stdlib.h>
	26	#include "libavutil/avassert.h"
	27	#include "libavutil/intreadwrite.h"
	28	#include "libavcodec/get_bits.h"
	29	#include "libavcodec/bytestream.h"
	30	#include "avformat.h"
	31	#include "internal.h"
	32	#include "oggdec.h"
	33	#include "riff.h"
	34
	35	static int
	36	ogm_header(AVFormatContext *s, int idx)
	37	{
	38	struct ogg *ogg = s->priv_data;
	39	struct ogg_stream *os = ogg->streams + idx;
	40	AVStream *st = s->streams[idx];
	41	GetByteContext p;
	42	uint64_t time_unit;
	43	uint64_t spu;
	44	uint32_t size;
	45
	46	bytestream2_init(&p, os->buf + os->pstart, os->psize);
	47	if (!(bytestream2_peek_byte(&p) & 1))
	48	return 0;
	49
	50	if (bytestream2_peek_byte(&p) == 1) {
	51	bytestream2_skip(&p, 1);
	52
	53	if (bytestream2_peek_byte(&p) == 'v'){
	54	int tag;
	55	st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
	56	bytestream2_skip(&p, 8);
	57	tag = bytestream2_get_le32(&p);
	58	st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag);
	59	st->codec->codec_tag = tag;
	60	} else if (bytestream2_peek_byte(&p) == 't') {
	61	st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
	62	st->codec->codec_id = AV_CODEC_ID_TEXT;
	63	bytestream2_skip(&p, 12);
	64	} else {
	65	uint8_t acid[5] = { 0 };
	66	int cid;
	67	st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
	68	bytestream2_skip(&p, 8);
	69	bytestream2_get_buffer(&p, acid, 4);
	70	acid[4] = 0;
	71	cid = strtol(acid, NULL, 16);
	72	st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, cid);
	73	// our parser completely breaks AAC in Ogg
	74	if (st->codec->codec_id != AV_CODEC_ID_AAC)
	75	st->need_parsing = AVSTREAM_PARSE_FULL;
	76	}
	77
	78	size = bytestream2_get_le32(&p);
	79	size = FFMIN(size, os->psize);
	80	time_unit = bytestream2_get_le64(&p);
	81	spu = bytestream2_get_le64(&p);
	82	if (!time_unit \|\| !spu) {
	83	av_log(s, AV_LOG_ERROR, "Invalid timing values.\n");
	84	return AVERROR_INVALIDDATA;
	85	}
	86
	87	bytestream2_skip(&p, 4); /* default_len */
	88	bytestream2_skip(&p, 8); /* buffersize + bits_per_sample */
	89
	90	if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
	91	st->codec->width = bytestream2_get_le32(&p);
	92	st->codec->height = bytestream2_get_le32(&p);
	93	avpriv_set_pts_info(st, 64, time_unit, spu * 10000000);
	94	} else {
	95	st->codec->channels = bytestream2_get_le16(&p);
	96	bytestream2_skip(&p, 2); /* block_align */
	97	st->codec->bit_rate = bytestream2_get_le32(&p) * 8;
	98	st->codec->sample_rate = spu * 10000000 / time_unit;
	99	avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
	100	if (size >= 56 && st->codec->codec_id == AV_CODEC_ID_AAC) {
	101	bytestream2_skip(&p, 4);
	102	size -= 4;
	103	}
	104	if (size > 52) {
	105	av_assert0(FF_INPUT_BUFFER_PADDING_SIZE <= 52);
	106	size -= 52;
	107	ff_alloc_extradata(st->codec, size);
	108	bytestream2_get_buffer(&p, st->codec->extradata, st->codec->extradata_size);
	109	}
	110	}
	111	} else if (bytestream2_peek_byte(&p) == 3) {
	112	bytestream2_skip(&p, 7);
	113	if (bytestream2_get_bytes_left(&p) > 1)
	114	ff_vorbis_stream_comment(s, st, p.buffer, bytestream2_get_bytes_left(&p) - 1);
	115	}
	116
	117	return 1;
	118	}
	119
	120	static int
	121	ogm_dshow_header(AVFormatContext *s, int idx)
	122	{
	123	struct ogg *ogg = s->priv_data;
	124	struct ogg_stream *os = ogg->streams + idx;
	125	AVStream *st = s->streams[idx];
	126	uint8_t *p = os->buf + os->pstart;
	127	uint32_t t;
	128
	129	if(!(*p & 1))
	130	return 0;
	131	if(*p != 1)
	132	return 1;
	133
	134	if (os->psize < 100)
	135	return AVERROR_INVALIDDATA;
	136	t = AV_RL32(p + 96);
	137
	138	if(t == 0x05589f80){
	139	if (os->psize < 184)
	140	return AVERROR_INVALIDDATA;
	141
	142	st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
	143	st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, AV_RL32(p + 68));
	144	avpriv_set_pts_info(st, 64, AV_RL64(p + 164), 10000000);
	145	st->codec->width = AV_RL32(p + 176);
	146	st->codec->height = AV_RL32(p + 180);
	147	} else if(t == 0x05589f81){
	148	if (os->psize < 136)
	149	return AVERROR_INVALIDDATA;
	150
	151	st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
	152	st->codec->codec_id = ff_codec_get_id(ff_codec_wav_tags, AV_RL16(p + 124));
	153	st->codec->channels = AV_RL16(p + 126);
	154	st->codec->sample_rate = AV_RL32(p + 128);
	155	st->codec->bit_rate = AV_RL32(p + 132) * 8;
	156	}
	157
	158	return 1;
	159	}
	160
	161	static int
	162	ogm_packet(AVFormatContext *s, int idx)
	163	{
	164	struct ogg *ogg = s->priv_data;
	165	struct ogg_stream *os = ogg->streams + idx;
	166	uint8_t *p = os->buf + os->pstart;
	167	int lb;
	168
	169	if(*p & 8)
	170	os->pflags \|= AV_PKT_FLAG_KEY;
	171
	172	lb = ((p & 2) << 1) \| ((p >> 6) & 3);
	173	os->pstart += lb + 1;
	174	os->psize -= lb + 1;
	175
	176	while (lb--)
	177	os->pduration += p[lb+1] << (lb*8);
	178
	179	return 0;
	180	}
	181
	182	const struct ogg_codec ff_ogm_video_codec = {
	183	.magic = "\001video",
	184	.magicsize = 6,
	185	.header = ogm_header,
	186	.packet = ogm_packet,
	187	.granule_is_start = 1,
	188	.nb_header = 2,
	189	};
	190
	191	const struct ogg_codec ff_ogm_audio_codec = {
	192	.magic = "\001audio",
	193	.magicsize = 6,
	194	.header = ogm_header,
	195	.packet = ogm_packet,
	196	.granule_is_start = 1,
	197	.nb_header = 2,
	198	};
	199
	200	const struct ogg_codec ff_ogm_text_codec = {
	201	.magic = "\001text",
	202	.magicsize = 5,
	203	.header = ogm_header,
	204	.packet = ogm_packet,
	205	.granule_is_start = 1,
	206	.nb_header = 2,
	207	};
	208
	209	const struct ogg_codec ff_ogm_old_codec = {
	210	.magic = "\001Direct Show Samples embedded in Ogg",
	211	.magicsize = 35,
	212	.header = ogm_dshow_header,
	213	.packet = ogm_packet,
	214	.granule_is_start = 1,
	215	.nb_header = 1,
	216	};