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avcodec/pnmenc: add support for grayf32 in PFM image

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This commit is contained in:
Paul B Mahol 2022-06-29 09:40:22 +02:00
parent 8d4bdf99e5
commit ed4bad9977
1 changed files with 22 additions and 3 deletions

25
libavcodec/pnmenc.c

@ -85,18 +85,25 @@ static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
c = 'F';
n = avctx->width * 4;
break;
case AV_PIX_FMT_GRAYF32:
c = 'f';
n = avctx->width * 4;
break;
default:
return -1;
}
snprintf(bytestream, bytestream_end - bytestream,
"P%c\n%d %d\n", c, avctx->width, h1);
bytestream += strlen(bytestream);
if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32)
if (avctx->pix_fmt == AV_PIX_FMT_GBRPF32 ||
avctx->pix_fmt == AV_PIX_FMT_GRAYF32)
snprintf(bytestream, bytestream_end - bytestream,
"%f\n", avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ? 1.f: -1.f);
"%f\n", (avctx->pix_fmt == AV_PIX_FMT_GBRPF32BE ||
avctx->pix_fmt == AV_PIX_FMT_GRAYF32BE) ? 1.f: -1.f);
bytestream += strlen(bytestream);
if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE &&
avctx->pix_fmt != AV_PIX_FMT_GBRPF32) {
avctx->pix_fmt != AV_PIX_FMT_GBRPF32 &&
avctx->pix_fmt != AV_PIX_FMT_GRAYF32) {
int maxdepth = (1 << av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth) - 1;
snprintf(bytestream, bytestream_end - bytestream,
"%d\n", maxdepth);
@ -120,6 +127,17 @@ static int pnm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
g += p->linesize[0] / 4;
b += p->linesize[1] / 4;
}
} else if (avctx->pix_fmt == AV_PIX_FMT_GRAYF32) {
const float *g = (const float *)p->data[0];
for (int i = 0; i < avctx->height; i++) {
for (int j = 0; j < avctx->width; j++) {
AV_WN32(bytestream, av_float2int(g[j]));
bytestream += 4;
}
g += p->linesize[0] / 4;
}
} else {
ptr = p->data[0];
linesize = p->linesize[0];
@ -218,6 +236,7 @@ const FFCodec ff_pfm_encoder = {
.p.capabilities = AV_CODEC_CAP_DR1,
FF_CODEC_ENCODE_CB(pnm_encode_frame),
.p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_GBRPF32,
AV_PIX_FMT_GRAYF32,
AV_PIX_FMT_NONE },
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};