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iff: add support for IFF DEEP

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Fixes trac #1045.

Thanks to Peter Ross for his help with this patch.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Piotr Bandurski 2012-03-08 23:34:36 +01:00 committed by Michael Niedermayer
parent 520cf05338
commit af55a9d80a
2 changed files with 52 additions and 2 deletions
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10
libavcodec/iff.c
View File

@ -316,7 +316,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
avctx->pix_fmt = (avctx->bits_per_coded_sample < 8) ||
(avctx->extradata_size >= 2 && palette_size) ? PIX_FMT_PAL8 : PIX_FMT_GRAY8;
} else if (avctx->bits_per_coded_sample <= 32) {
avctx->pix_fmt = PIX_FMT_BGR32;
if (avctx->codec_tag != MKTAG('D','E','E','P'))
avctx->pix_fmt = PIX_FMT_BGR32;
} else {
return AVERROR_INVALIDDATA;
}
@ -503,6 +504,13 @@ static int decode_frame_ilbm(AVCodecContext *avctx,
decode_ham_plane32((uint32_t *) row, s->ham_buf, s->ham_palbuf, s->planesize);
}
}
} else if (avctx->codec_tag == MKTAG('D','E','E','P')) {
int raw_width = avctx->width * (av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]) >> 3);
for(y = 0; y < avctx->height && buf < buf_end; y++ ) {
uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
memcpy(row, buf, FFMIN(raw_width, buf_end - buf));
buf += raw_width;
}
} else if (avctx->codec_tag == MKTAG('I','L','B','M')) { // interleaved
if (avctx->pix_fmt == PIX_FMT_PAL8 || avctx->pix_fmt == PIX_FMT_GRAY8) {
for(y = 0; y < avctx->height; y++ ) {

44
libavformat/iff.c
View File

@ -42,9 +42,11 @@
#define ID_PBM MKTAG('P','B','M',' ')
#define ID_ILBM MKTAG('I','L','B','M')
#define ID_BMHD MKTAG('B','M','H','D')
#define ID_DGBL MKTAG('D','G','B','L')
#define ID_CAMG MKTAG('C','A','M','G')
#define ID_CMAP MKTAG('C','M','A','P')
#define ID_ACBM MKTAG('A','C','B','M')
#define ID_DEEP MKTAG('D','E','E','P')
#define ID_FORM MKTAG('F','O','R','M')
#define ID_ANNO MKTAG('A','N','N','O')
@ -57,7 +59,9 @@
#define ID_TEXT MKTAG('T','E','X','T')
#define ID_ABIT MKTAG('A','B','I','T')
#define ID_BODY MKTAG('B','O','D','Y')
#define ID_DBOD MKTAG('D','B','O','D')
#define ID_ANNO MKTAG('A','N','N','O')
#define ID_DPEL MKTAG('D','P','E','L')
#define LEFT 2
#define RIGHT 4
@ -121,11 +125,14 @@ static int iff_probe(AVProbeData *p)
const uint8_t *d = p->buf;
if ( AV_RL32(d) == ID_FORM &&
(AV_RL32(d+8) == ID_8SVX || AV_RL32(d+8) == ID_PBM || AV_RL32(d+8) == ID_ILBM || AV_RL32(d+8) == ID_ACBM) )
(AV_RL32(d+8) == ID_8SVX || AV_RL32(d+8) == ID_PBM || AV_RL32(d+8) == ID_ACBM || AV_RL32(d+8) == ID_DEEP || AV_RL32(d+8) == ID_ILBM) )
return AVPROBE_SCORE_MAX;
return 0;
}
static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
static int iff_read_header(AVFormatContext *s)
{
IffDemuxContext *iff = s->priv_data;
@ -136,6 +143,8 @@ static int iff_read_header(AVFormatContext *s)
uint32_t screenmode = 0;
unsigned transparency = 0;
unsigned masking = 0; // no mask
uint8_t fmt[16];
int fmt_size;
st = avformat_new_stream(s, NULL);
if (!st)
@ -170,6 +179,7 @@ static int iff_read_header(AVFormatContext *s)
case ID_ABIT:
case ID_BODY:
case ID_DBOD:
iff->body_pos = avio_tell(pb);
iff->body_size = data_size;
break;
@ -218,6 +228,38 @@ static int iff_read_header(AVFormatContext *s)
}
break;
case ID_DPEL:
if (data_size < 4 || (data_size & 3))
return AVERROR_INVALIDDATA;
if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
return fmt_size;
if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
st->codec->pix_fmt = PIX_FMT_RGB24;
else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
st->codec->pix_fmt = PIX_FMT_RGBA;
else {
av_log_ask_for_sample(NULL, "unsupported color format\n");
return AVERROR_PATCHWELCOME;
}
break;
case ID_DGBL:
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
if (data_size < 8)
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
iff->bitmap_compression = avio_rb16(pb);
if (iff->bitmap_compression != 0) {
av_log(s, AV_LOG_ERROR,
"compression %i not supported\n", iff->bitmap_compression);
return AVERROR_PATCHWELCOME;
}
st->sample_aspect_ratio.num = avio_r8(pb);
st->sample_aspect_ratio.den = avio_r8(pb);
st->codec->bits_per_coded_sample = 24;
break;
case ID_ANNO:
case ID_TEXT: metadata_tag = "comment"; break;
case ID_AUTH: metadata_tag = "artist"; break;