[FFmpeg-cvslog] avcodec/pnmenc: add support for grayf32 in PFM image
Paul B Mahol
git at videolan.org
Wed Jun 29 10:50:43 EEST 2022
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Wed Jun 29 09:40:22 2022 +0200| [ed4bad9977b14e42b70b071be2f06dd60993f2e6] | committer: Paul B Mahol
avcodec/pnmenc: add support for grayf32 in PFM image
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ed4bad9977b14e42b70b071be2f06dd60993f2e6
---
libavcodec/pnmenc.c | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/libavcodec/pnmenc.c b/libavcodec/pnmenc.c
index feb26b8bfa..4afc588c08 100644
--- a/libavcodec/pnmenc.c
+++ b/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,
};
More information about the ffmpeg-cvslog
mailing list