diff --git a/Changelog b/Changelog index 792122eea5..4833315bc2 100644 --- a/Changelog +++ b/Changelog @@ -87,6 +87,7 @@ version : - sndio support for playback and record - Linux framebuffer input device added - Chronomaster DFA decoder +- DPX image encoder version 0.6: diff --git a/doc/general.texi b/doc/general.texi index 128b1079da..696db5870e 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -277,7 +277,7 @@ following image formats are supported: @tab Only uncompressed GIFs are generated. @item BMP @tab X @tab X @tab Microsoft BMP image -@item DPX @tab @tab X +@item DPX @tab X @tab X @tab Digital Picture Exchange @item JPEG @tab X @tab X @tab Progressive JPEG is not supported. diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 1eb39b8141..7f771be2b1 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -112,6 +112,7 @@ OBJS-$(CONFIG_DNXHD_ENCODER) += dnxhdenc.o dnxhddata.o \ ratecontrol.o mpeg12data.o \ mpegvideo.o OBJS-$(CONFIG_DPX_DECODER) += dpx.o +OBJS-$(CONFIG_DPX_ENCODER) += dpxenc.o OBJS-$(CONFIG_DSICINAUDIO_DECODER) += dsicinav.o OBJS-$(CONFIG_DSICINVIDEO_DECODER) += dsicinav.o OBJS-$(CONFIG_DVBSUB_DECODER) += dvbsubdec.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index a045824a9e..0142c13093 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -90,7 +90,7 @@ void avcodec_register_all(void) REGISTER_DECODER (CYUV, cyuv); REGISTER_DECODER (DFA, dfa); REGISTER_ENCDEC (DNXHD, dnxhd); - REGISTER_DECODER (DPX, dpx); + REGISTER_ENCDEC (DPX, dpx); REGISTER_DECODER (DSICINVIDEO, dsicinvideo); REGISTER_ENCDEC (DVVIDEO, dvvideo); REGISTER_DECODER (DXA, dxa); diff --git a/libavcodec/dpxenc.c b/libavcodec/dpxenc.c new file mode 100644 index 0000000000..8c631e51ef --- /dev/null +++ b/libavcodec/dpxenc.c @@ -0,0 +1,136 @@ +/* + * DPX (.dpx) image encoder + * Copyright (c) 2011 Peter Ross + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/intreadwrite.h" +#include "libavutil/imgutils.h" +#include "avcodec.h" + +typedef struct DPXContext { + AVFrame picture; + int big_endian; + int bits_per_component; + int descriptor; +} DPXContext; + +static av_cold int encode_init(AVCodecContext *avctx) +{ + DPXContext *s = avctx->priv_data; + + avctx->coded_frame = &s->picture; + avctx->coded_frame->pict_type = FF_I_TYPE; + avctx->coded_frame->key_frame = 1; + + s->big_endian = 1; + s->bits_per_component = 8; + s->descriptor = 50; /* RGB */ + + switch (avctx->pix_fmt) { + case PIX_FMT_RGB24: + break; + case PIX_FMT_RGBA: + s->descriptor = 51; /* RGBA */ + break; + case PIX_FMT_RGB48LE: + s->big_endian = 0; + case PIX_FMT_RGB48BE: + s->bits_per_component = avctx->bits_per_raw_sample ? avctx->bits_per_raw_sample : 16; + break; + default: + av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n"); + return -1; + } + + return 0; +} + +#define write16(p, value) \ +do { \ + if (s->big_endian) AV_WB16(p, value); \ + else AV_WL16(p, value); \ +} while(0) + +#define write32(p, value) \ +do { \ + if (s->big_endian) AV_WB32(p, value); \ + else AV_WL32(p, value); \ +} while(0) + +static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data) +{ + DPXContext *s = avctx->priv_data; + int size; + +#define HEADER_SIZE 1664 /* DPX Generic header */ + if (buf_size < HEADER_SIZE) + return -1; + + memset(buf, 0, HEADER_SIZE); + + /* File information header */ + write32(buf, MKBETAG('S','D','P','X')); + write32(buf + 4, HEADER_SIZE); + memcpy (buf + 8, "V1.0", 4); + write32(buf + 20, 1); /* new image */ + write32(buf + 24, HEADER_SIZE); + memcpy (buf + 160, LIBAVCODEC_IDENT, FFMIN(sizeof(LIBAVCODEC_IDENT), 100)); + write32(buf + 660, 0xFFFFFFFF); /* unencrypted */ + + /* Image information header */ + write16(buf + 768, 0); /* orientation; left to right, top to bottom */ + write16(buf + 770, 1); /* number of elements */ + write32(buf + 772, avctx->width); + write32(buf + 776, avctx->height); + buf[800] = s->descriptor; + buf[801] = 2; /* linear transfer */ + buf[802] = 2; /* linear colorimetric */ + buf[803] = s->bits_per_component; + + /* Image source information header */ + write32(buf + 1628, avctx->sample_aspect_ratio.num); + write32(buf + 1632, avctx->sample_aspect_ratio.den); + + size = avpicture_layout((AVPicture*)data, avctx->pix_fmt, + avctx->width, avctx->height, + buf + HEADER_SIZE, buf_size - HEADER_SIZE); + if (size < 0) + return size; + + size += HEADER_SIZE; + + write32(buf + 16, size); /* file size */ + return size; +} + +AVCodec ff_dpx_encoder = { + "dpx", + AVMEDIA_TYPE_VIDEO, + CODEC_ID_DPX, + sizeof(DPXContext), + encode_init, + encode_frame, + .pix_fmts= (const enum PixelFormat[]){ + PIX_FMT_RGB24, + PIX_FMT_RGBA, + PIX_FMT_RGB48LE, + PIX_FMT_RGB48BE, + PIX_FMT_NONE}, + .long_name = NULL_IF_CONFIG_SMALL("DPX image"), +}; diff --git a/libavcodec/version.h b/libavcodec/version.h index a1c8365e5c..5aa0b82c45 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -21,7 +21,7 @@ #define AVCODEC_VERSION_H #define LIBAVCODEC_VERSION_MAJOR 52 -#define LIBAVCODEC_VERSION_MINOR 116 +#define LIBAVCODEC_VERSION_MINOR 117 #define LIBAVCODEC_VERSION_MICRO 0 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \