diff options
Diffstat (limited to 'libavcodec/pnmdec.c')
| -rw-r--r-- | libavcodec/pnmdec.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libavcodec/pnmdec.c b/libavcodec/pnmdec.c index e03e52297f..05bd11b147 100644 --- a/libavcodec/pnmdec.c +++ b/libavcodec/pnmdec.c @@ -46,6 +46,7 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data, int i, j, k, n, linesize, h, upgrade = 0, is_mono = 0; unsigned char *ptr; int components, sample_len, ret; + float scale; s->bytestream_start = s->bytestream = (uint8_t *)buf; @@ -254,6 +255,48 @@ static int pnm_decode_frame(AVCodecContext *avctx, void *data, } } break; + case AV_PIX_FMT_GBRPF32: + if (avctx->width * avctx->height * 12 > s->bytestream_end - s->bytestream) + return AVERROR_INVALIDDATA; + scale = 1.f / s->scale; + if (s->endian) { + float *r, *g, *b; + + r = (float *)p->data[2]; + g = (float *)p->data[0]; + b = (float *)p->data[1]; + for (int i = 0; i < avctx->height; i++) { + for (int j = 0; j < avctx->width; j++) { + r[j] = av_int2float(av_le2ne32(((uint32_t *)s->bytestream)[0])) * scale; + g[j] = av_int2float(av_le2ne32(((uint32_t *)s->bytestream)[4])) * scale; + b[j] = av_int2float(av_le2ne32(((uint32_t *)s->bytestream)[8])) * scale; + s->bytestream += 12; + } + + r += p->linesize[2] / 4; + g += p->linesize[0] / 4; + b += p->linesize[1] / 4; + } + } else { + float *r, *g, *b; + + r = (float *)p->data[2]; + g = (float *)p->data[0]; + b = (float *)p->data[1]; + for (int i = 0; i < avctx->height; i++) { + for (int j = 0; j < avctx->width; j++) { + r[j] = av_int2float(av_be2ne32(((uint32_t *)s->bytestream)[0])) * scale; + g[j] = av_int2float(av_be2ne32(((uint32_t *)s->bytestream)[4])) * scale; + b[j] = av_int2float(av_be2ne32(((uint32_t *)s->bytestream)[8])) * scale; + s->bytestream += 12; + } + + r += p->linesize[2] / 4; + g += p->linesize[0] / 4; + b += p->linesize[1] / 4; + } + } + break; } *got_frame = 1; @@ -320,3 +363,15 @@ AVCodec ff_pam_decoder = { .capabilities = AV_CODEC_CAP_DR1, }; #endif + +#if CONFIG_PFM_DECODER +AVCodec ff_pfm_decoder = { + .name = "pfm", + .long_name = NULL_IF_CONFIG_SMALL("PFM (Portable FloatMap) image"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_PFM, + .priv_data_size = sizeof(PNMContext), + .decode = pnm_decode_frame, + .capabilities = AV_CODEC_CAP_DR1, +}; +#endif |