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avcodec/fraps: add support for PAL8 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2017-01-19 23:14:27 +01:00
parent cde007dcd3
commit d60f090dd1
1 changed files with 27 additions and 2 deletions
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29
libavcodec/fraps.c
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@ -146,6 +146,7 @@ static int decode_frame(AVCodecContext *avctx,
uint32_t offs[4];
int i, j, ret, is_chroma;
const int planes = 3;
int is_pal;
uint8_t *out;
if (buf_size < 4) {
@ -155,6 +156,7 @@ static int decode_frame(AVCodecContext *avctx,
header = AV_RL32(buf);
version = header & 0xff;
is_pal = buf[1] == 2 && version == 1;
header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */
if (version > 5) {
@ -166,7 +168,16 @@ static int decode_frame(AVCodecContext *avctx,
buf += header_size;
if (version < 2) {
if (is_pal) {
unsigned needed_size = avctx->width * avctx->height + 1024;
needed_size += header_size;
if (buf_size != needed_size) {
av_log(avctx, AV_LOG_ERROR,
"Invalid frame length %d (should be %d)\n",
buf_size, needed_size);
return AVERROR_INVALIDDATA;
}
} else if (version < 2) {
unsigned needed_size = avctx->width * avctx->height * 3;
if (version == 0) needed_size /= 2;
needed_size += header_size;
@ -209,7 +220,7 @@ static int decode_frame(AVCodecContext *avctx,
f->pict_type = AV_PICTURE_TYPE_I;
f->key_frame = 1;
avctx->pix_fmt = version & 1 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P;
avctx->pix_fmt = version & 1 ? is_pal ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P;
avctx->color_range = version & 1 ? AVCOL_RANGE_UNSPECIFIED
: AVCOL_RANGE_JPEG;
avctx->colorspace = version & 1 ? AVCOL_SPC_UNSPECIFIED : AVCOL_SPC_BT709;
@ -245,11 +256,25 @@ static int decode_frame(AVCodecContext *avctx,
break;
case 1:
if (is_pal) {
uint32_t *pal = (uint32_t *)f->data[1];
for (y = 0; y < 256; y++) {
pal[y] = AV_RL32(buf) | 0xFF000000;
buf += 4;
}
for (y = 0; y <avctx->height; y++)
memcpy(&f->data[0][y * f->linesize[0]],
&buf[y * avctx->width],
avctx->width);
} else {
/* Fraps v1 is an upside-down BGR24 */
for (y = 0; y<avctx->height; y++)
memcpy(&f->data[0][(avctx->height - y - 1) * f->linesize[0]],
&buf[y * avctx->width * 3],
3 * avctx->width);
}
break;
case 2: