[FFmpeg-cvslog] BRender PIX image decoder
Aleksi Nurmi
git at videolan.org
Thu Mar 27 21:32:21 CET 2014
ffmpeg | branch: master | Aleksi Nurmi <aleksi.nurmi at gmail.com> | Thu Mar 27 00:45:15 2014 +0100| [ae17878fb2ab100264226c84c58f5b95a703312f] | committer: Vittorio Giovara
BRender PIX image decoder
Further enhancements by Vittorio Giovara and Paul B Mahol.
Signed-off-by: Vittorio Giovara <vittorio.giovara at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ae17878fb2ab100264226c84c58f5b95a703312f
---
Changelog | 1 +
doc/general.texi | 2 +
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/avcodec.h | 1 +
libavcodec/brenderpix.c | 294 +++++++++++++++++++++++++++++++++++++++++++++++
libavcodec/codec_desc.c | 7 ++
libavcodec/version.h | 2 +-
libavformat/img2.c | 1 +
9 files changed, 309 insertions(+), 1 deletion(-)
diff --git a/Changelog b/Changelog
index ed182bb..cfa1cc0 100644
--- a/Changelog
+++ b/Changelog
@@ -6,6 +6,7 @@ version <next>:
- shuffleplanes filter
- replaygain data export
- Alias PIX image encoder and decoder
+- BRender PIX image decoder
version 10:
diff --git a/doc/general.texi b/doc/general.texi
index dce4c0a..09b6884 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -430,6 +430,8 @@ following image formats are supported:
@tab Only uncompressed GIFs are generated.
@item BMP @tab X @tab X
@tab Microsoft BMP image
+ at item BRender PIX @tab @tab X
+ @tab Argonaut BRender 3D engine image format.
@item DPX @tab X @tab X
@tab Digital Picture Exchange
@item JPEG @tab X @tab X
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index f4dfa85..a455125 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -126,6 +126,7 @@ OBJS-$(CONFIG_BMP_DECODER) += bmp.o msrledec.o
OBJS-$(CONFIG_BMP_ENCODER) += bmpenc.o
OBJS-$(CONFIG_BMV_VIDEO_DECODER) += bmv.o
OBJS-$(CONFIG_BMV_AUDIO_DECODER) += bmv.o
+OBJS-$(CONFIG_BRENDER_PIX_DECODER) += brenderpix.o
OBJS-$(CONFIG_C93_DECODER) += c93.o
OBJS-$(CONFIG_CAVS_DECODER) += cavs.o cavsdec.o cavsdsp.o \
cavsdata.o mpeg12data.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 8918481..fb5ceff 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -112,6 +112,7 @@ void avcodec_register_all(void)
REGISTER_DECODER(BINK, bink);
REGISTER_ENCDEC (BMP, bmp);
REGISTER_DECODER(BMV_VIDEO, bmv_video);
+ REGISTER_DECODER(BRENDER_PIX, brender_pix);
REGISTER_DECODER(C93, c93);
REGISTER_DECODER(CAVS, cavs);
REGISTER_DECODER(CDGRAPHICS, cdgraphics);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 66d3a70..30b1b64 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -285,6 +285,7 @@ enum AVCodecID {
AV_CODEC_ID_HEVC,
AV_CODEC_ID_FIC,
AV_CODEC_ID_ALIAS_PIX,
+ AV_CODEC_ID_BRENDER_PIX,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
diff --git a/libavcodec/brenderpix.c b/libavcodec/brenderpix.c
new file mode 100644
index 0000000..0c08f8d
--- /dev/null
+++ b/libavcodec/brenderpix.c
@@ -0,0 +1,294 @@
+/*
+ * BRender PIX (.pix) image decoder
+ * Copyright (c) 2012 Aleksi Nurmi
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* Tested against samples from I-War / Independence War and Defiance. */
+
+#include "libavutil/imgutils.h"
+
+#include "avcodec.h"
+#include "bytestream.h"
+#include "internal.h"
+
+#define HEADER1_CHUNK 0x03
+#define HEADER2_CHUNK 0x3D
+#define IMAGE_DATA_CHUNK 0x21
+
+/* In 8-bit colour mode, 256 colours are available at any time. Which 256
+ * colours are available is determined by the contents of the hardware palette
+ * (or CLUT). In this case, the palette supplied with BRender (std.pal) has
+ * been loaded into the CLUT.
+ *
+ * The 256 colours in std.pal are divided into seven ranges, or `colour ramps'.
+ * The first 64 colours represent shades of grey ranging from very dark grey
+ * (black) to very light grey (white). The following colours are 32-element
+ * ramps for six colours as shown below.
+ */
+static const uint32_t std_pal_table[256] = {
+ // gray
+ 0xFF000000, 0xFF030303, 0xFF060606, 0xFF090909, 0xFF0C0C0C, 0xFF0F0F0F,
+ 0xFF121212, 0xFF151515, 0xFF181818, 0xFF1B1B1B, 0xFF1E1E1E, 0xFF212121,
+ 0xFF242424, 0xFF272727, 0xFF2A2A2A, 0xFF2D2D2D, 0xFF313131, 0xFF343434,
+ 0xFF373737, 0xFF3A3A3A, 0xFF3D3D3D, 0xFF404040, 0xFF434343, 0xFF464646,
+ 0xFF494949, 0xFF4C4C4C, 0xFF4F4F4F, 0xFF525252, 0xFF555555, 0xFF585858,
+ 0xFF5B5B5B, 0xFF5E5E5E, 0xFF626262, 0xFF656565, 0xFF686868, 0xFF6B6B6B,
+ 0xFF6E6E6E, 0xFF717171, 0xFF747474, 0xFF777777, 0xFF7A7A7A, 0xFF7D7D7D,
+ 0xFF808080, 0xFF838383, 0xFF868686, 0xFF898989, 0xFF8C8C8C, 0xFF8F8F8F,
+ 0xFF939393, 0xFF999999, 0xFFA0A0A0, 0xFFA7A7A7, 0xFFAEAEAE, 0xFFB4B4B4,
+ 0xFFBBBBBB, 0xFFC2C2C2, 0xFFC9C9C9, 0xFFCFCFCF, 0xFFD6D6D6, 0xFFDDDDDD,
+ 0xFFE4E4E4, 0xFFEAEAEA, 0xFFF1F1F1, 0xFFF8F8F8,
+
+ // blue
+ 0xFF000000, 0xFF020209, 0xFF050513, 0xFF07071D, 0xFF0A0A27, 0xFF0C0C31,
+ 0xFF0F0F3B, 0xFF111145, 0xFF14144F, 0xFF161659, 0xFF181863, 0xFF1B1B6D,
+ 0xFF1E1E77, 0xFF202080, 0xFF22228A, 0xFF252594, 0xFF28289E, 0xFF2A2AA8,
+ 0xFF2D2DB2, 0xFF2F2FBC, 0xFF3131C6, 0xFF3434D0, 0xFF3737DA, 0xFF3939E4,
+ 0xFF3C3CEE, 0xFF5454F0, 0xFF6C6CF2, 0xFF8585F4, 0xFF9D9DF6, 0xFFB5B5F8,
+ 0xFFCECEFA, 0xFFE6E6FC,
+
+ // green
+ 0xFF000000, 0xFF020902, 0xFF051305, 0xFF071D07, 0xFF0A270A, 0xFF0C310C,
+ 0xFF0F3B0F, 0xFF114511, 0xFF144F14, 0xFF165916, 0xFF186318, 0xFF1B6D1B,
+ 0xFF1E771E, 0xFF208020, 0xFF228A22, 0xFF259425, 0xFF289E28, 0xFF2AA82A,
+ 0xFF2DB22D, 0xFF2FBC2F, 0xFF31C631, 0xFF34D034, 0xFF37DA37, 0xFF39E439,
+ 0xFF3CEE3C, 0xFF54F054, 0xFF6CF26C, 0xFF85F485, 0xFF9DF69D, 0xFFB5F8B5,
+ 0xFFCEFACE, 0xFFE6FCE6,
+
+ // cyan
+ 0xFF000000, 0xFF020909, 0xFF051313, 0xFF071D1D, 0xFF0A2727, 0xFF0C3131,
+ 0xFF0F3B3B, 0xFF114545, 0xFF144F4F, 0xFF165959, 0xFF186363, 0xFF1B6D6D,
+ 0xFF1E7777, 0xFF208080, 0xFF228A8A, 0xFF259494, 0xFF289E9E, 0xFF2AA8A8,
+ 0xFF2DB2B2, 0xFF2FBCBC, 0xFF31C6C6, 0xFF34D0D0, 0xFF37DADA, 0xFF39E4E4,
+ 0xFF3CEEEE, 0xFF54F0F0, 0xFF6CF2F2, 0xFF85F4F4, 0xFF9DF6F6, 0xFFB5F8F8,
+ 0xFFCEFAFA, 0xFFE6FCFC,
+
+ // red
+ 0xFF000000, 0xFF090202, 0xFF130505, 0xFF1D0707, 0xFF270A0A, 0xFF310C0C,
+ 0xFF3B0F0F, 0xFF451111, 0xFF4F1414, 0xFF591616, 0xFF631818, 0xFF6D1B1B,
+ 0xFF771E1E, 0xFF802020, 0xFF8A2222, 0xFF942525, 0xFF9E2828, 0xFFA82A2A,
+ 0xFFB22D2D, 0xFFBC2F2F, 0xFFC63131, 0xFFD03434, 0xFFDA3737, 0xFFE43939,
+ 0xFFEE3C3C, 0xFFF05454, 0xFFF26C6C, 0xFFF48585, 0xFFF69D9D, 0xFFF8B5B5,
+ 0xFFFACECE, 0xFFFCE6E6,
+
+ // magenta
+ 0xFF000000, 0xFF090209, 0xFF130513, 0xFF1D071D, 0xFF270A27, 0xFF310C31,
+ 0xFF3B0F3B, 0xFF451145, 0xFF4F144F, 0xFF591659, 0xFF631863, 0xFF6D1B6D,
+ 0xFF771E77, 0xFF802080, 0xFF8A228A, 0xFF942594, 0xFF9E289E, 0xFFA82AA8,
+ 0xFFB22DB2, 0xFFBC2FBC, 0xFFC631C6, 0xFFD034D0, 0xFFDA37DA, 0xFFE439E4,
+ 0xFFEE3CEE, 0xFFF054F0, 0xFFF26CF2, 0xFFF485F4, 0xFFF69DF6, 0xFFF8B5F8,
+ 0xFFFACEFA, 0xFFFCE6FC,
+
+ // yellow
+ 0xFF000000, 0xFF090902, 0xFF131305, 0xFF1D1D07, 0xFF27270A, 0xFF31310C,
+ 0xFF3B3B0F, 0xFF454511, 0xFF4F4F14, 0xFF595916, 0xFF636318, 0xFF6D6D1B,
+ 0xFF77771E, 0xFF808020, 0xFF8A8A22, 0xFF949425, 0xFF9E9E28, 0xFFA8A82A,
+ 0xFFB2B22D, 0xFFBCBC2F, 0xFFC6C631, 0xFFD0D034, 0xFFDADA37, 0xFFE4E439,
+ 0xFFEEEE3C, 0xFFF0F054, 0xFFF2F26C, 0xFFF4F485, 0xFFF6F69D, 0xFFF8F8B5,
+ 0xFFFAFACE, 0xFFFCFCE6,
+};
+
+typedef struct PixHeader {
+ int width;
+ int height;
+ int format;
+} PixHeader;
+
+static int pix_decode_header(PixHeader *out, GetByteContext *pgb)
+{
+ unsigned int header_len = bytestream2_get_be32(pgb);
+
+ out->format = bytestream2_get_byte(pgb);
+ bytestream2_skip(pgb, 2);
+ out->width = bytestream2_get_be16(pgb);
+ out->height = bytestream2_get_be16(pgb);
+
+ // the header is at least 11 bytes long; we read the first 7
+ if (header_len < 11)
+ return AVERROR_INVALIDDATA;
+
+ // skip the rest of the header
+ bytestream2_skip(pgb, header_len - 7);
+
+ return 0;
+}
+
+static int pix_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *avpkt)
+{
+ AVFrame *frame = data;
+
+ int ret, i, j;
+ GetByteContext gb;
+
+ unsigned int bytes_pp;
+ unsigned int magic[4];
+ unsigned int chunk_type;
+ unsigned int data_len;
+ unsigned int bytes_per_scanline;
+ PixHeader hdr;
+
+ bytestream2_init(&gb, avpkt->data, avpkt->size);
+
+ magic[0] = bytestream2_get_be32(&gb);
+ magic[1] = bytestream2_get_be32(&gb);
+ magic[2] = bytestream2_get_be32(&gb);
+ magic[3] = bytestream2_get_be32(&gb);
+
+ if (magic[0] != 0x12 ||
+ magic[1] != 0x08 ||
+ magic[2] != 0x02 ||
+ magic[3] != 0x02) {
+ av_log(avctx, AV_LOG_ERROR, "Not a BRender PIX file.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ chunk_type = bytestream2_get_be32(&gb);
+ if (chunk_type != HEADER1_CHUNK && chunk_type != HEADER2_CHUNK) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid chunk type %d.\n", chunk_type);
+ return AVERROR_INVALIDDATA;
+ }
+
+ ret = pix_decode_header(&hdr, &gb);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid header length.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ switch (hdr.format) {
+ case 3:
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
+ bytes_pp = 1;
+ break;
+ case 4:
+ avctx->pix_fmt = AV_PIX_FMT_RGB555BE;
+ bytes_pp = 2;
+ break;
+ case 5:
+ avctx->pix_fmt = AV_PIX_FMT_RGB565BE;
+ bytes_pp = 2;
+ break;
+ case 6:
+ avctx->pix_fmt = AV_PIX_FMT_RGB24;
+ bytes_pp = 3;
+ break;
+ case 7: // XRGB
+ case 8: // ARGB
+ avctx->pix_fmt = AV_PIX_FMT_ARGB;
+ bytes_pp = 4;
+ break;
+ case 18:
+ avctx->pix_fmt = AV_PIX_FMT_Y400A;
+ bytes_pp = 2;
+ break;
+ default:
+ avpriv_request_sample(avctx, "Format %d", hdr.format);
+ return AVERROR_PATCHWELCOME;
+ }
+
+ if ((ret = ff_set_dimensions(avctx, hdr.width, hdr.height)) < 0)
+ return ret;
+
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
+ return ret;
+
+ chunk_type = bytestream2_get_be32(&gb);
+
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8 &&
+ (chunk_type == HEADER1_CHUNK ||
+ chunk_type == HEADER2_CHUNK)) {
+ /* read palette data from data[1] */
+ PixHeader palhdr;
+ uint32_t *pal_out = (uint32_t *)frame->data[1];
+
+ ret = pix_decode_header(&palhdr, &gb);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid palette header length.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (palhdr.format != 7)
+ avpriv_request_sample(avctx, "Palette not in RGB format");
+
+ chunk_type = bytestream2_get_be32(&gb);
+ data_len = bytestream2_get_be32(&gb);
+ if (chunk_type != IMAGE_DATA_CHUNK ||
+ bytestream2_get_bytes_left(&gb) < data_len) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid palette data.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ // palette data is surrounded by 8 null bytes (both top and bottom)
+ bytestream2_skip(&gb, 8);
+ // convert to machine endian format (ARGB)
+ for (i = 0; i < 256; ++i)
+ *pal_out++ = (0xFFU << 24) | bytestream2_get_be32u(&gb);
+ bytestream2_skip(&gb, 8);
+
+ frame->palette_has_changed = 1;
+
+ chunk_type = bytestream2_get_be32(&gb);
+ } else if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
+ /* no palette supplied, use the default one */
+ uint32_t *pal_out = (uint32_t *)frame->data[1];
+
+ // TODO: add an AVOption to load custom palette files
+ av_log(avctx, AV_LOG_WARNING,
+ "Using default palette, colors might be off.\n");
+ memcpy(pal_out, std_pal_table, sizeof(uint32_t) * 256);
+
+ frame->palette_has_changed = 1;
+ }
+
+ data_len = bytestream2_get_be32(&gb);
+ bytestream2_skip(&gb, 8);
+
+ // read the image data to the buffer
+ bytes_per_scanline = bytes_pp * hdr.width;
+ if (chunk_type != IMAGE_DATA_CHUNK ||
+ data_len < bytes_per_scanline * hdr.height ||
+ bytestream2_get_bytes_left(&gb) < data_len) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid image data.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ av_image_copy_plane(frame->data[0], frame->linesize[0],
+ avpkt->data + bytestream2_tell(&gb),
+ bytes_per_scanline,
+ bytes_per_scanline, hdr.height);
+
+ // make alpha opaque for XRGB
+ if (hdr.format == 7)
+ for (j = 0; j < frame->height; j++)
+ for (i = 0; i < frame->linesize[0]; i += 4)
+ frame->data[0][j * frame->linesize[0] + i] = 0xFF;
+
+ frame->pict_type = AV_PICTURE_TYPE_I;
+ frame->key_frame = 1;
+ *got_frame = 1;
+
+ return avpkt->size;
+}
+
+AVCodec ff_brender_pix_decoder = {
+ .name = "brender_pix",
+ .long_name = NULL_IF_CONFIG_SMALL("BRender PIX image"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_BRENDER_PIX,
+ .decode = pix_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+};
diff --git a/libavcodec/codec_desc.c b/libavcodec/codec_desc.c
index 0ecfdb2..2ce5085 100644
--- a/libavcodec/codec_desc.c
+++ b/libavcodec/codec_desc.c
@@ -1109,6 +1109,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.props = AV_CODEC_PROP_LOSSY,
},
{
+ .id = AV_CODEC_ID_BRENDER_PIX,
+ .type = AVMEDIA_TYPE_VIDEO,
+ .name = "brender_pix",
+ .long_name = NULL_IF_CONFIG_SMALL("BRender PIX image"),
+ .props = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
+ },
+ {
.id = AV_CODEC_ID_DPX,
.type = AVMEDIA_TYPE_VIDEO,
.name = "dpx",
diff --git a/libavcodec/version.h b/libavcodec/version.h
index aeb0872..3937b83 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,7 +29,7 @@
#include "libavutil/version.h"
#define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR 37
+#define LIBAVCODEC_VERSION_MINOR 38
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavformat/img2.c b/libavformat/img2.c
index 9cec45a..5e842cf 100644
--- a/libavformat/img2.c
+++ b/libavformat/img2.c
@@ -56,6 +56,7 @@ static const IdStrMap img_tags[] = {
{ AV_CODEC_ID_TIFF, "tif" },
{ AV_CODEC_ID_SGI, "sgi" },
{ AV_CODEC_ID_PTX, "ptx" },
+ { AV_CODEC_ID_BRENDER_PIX,"pix" },
{ AV_CODEC_ID_PCX, "pcx" },
{ AV_CODEC_ID_SUNRAST, "sun" },
{ AV_CODEC_ID_SUNRAST, "ras" },
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