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Diffstat (limited to 'libavcodec/brender_pix.c')
| -rw-r--r-- | libavcodec/brender_pix.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/libavcodec/brender_pix.c b/libavcodec/brender_pix.c deleted file mode 100644 index 23a46cc0ed..0000000000 --- a/libavcodec/brender_pix.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * BRender PIX (.pix) image decoder - * Copyright (c) 2012 Aleksi Nurmi - * - * 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 - */ - -/* - * Tested against samples from I-War / Independence War and Defiance. - * If the PIX file does not contain a palette, the - * palette_has_changed property of the AVFrame is set to 0. - */ - -#include "libavutil/imgutils.h" -#include "avcodec.h" -#include "bytestream.h" -#include "internal.h" - -typedef struct BRPixHeader { - int format; - unsigned int width, height; -} BRPixHeader; - -static int brpix_decode_header(BRPixHeader *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 0; - } - - // skip the rest of the header - bytestream2_skip(pgb, header_len-7); - - return 1; -} - -static int brpix_decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - AVFrame *frame = data; - - int ret; - GetByteContext gb; - - unsigned int bytes_pp; - - unsigned int magic[4]; - unsigned int chunk_type; - unsigned int data_len; - BRPixHeader 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] != 0x8 || - magic[2] != 0x2 || - magic[3] != 0x2) { - av_log(avctx, AV_LOG_ERROR, "Not a BRender PIX file\n"); - return AVERROR_INVALIDDATA; - } - - chunk_type = bytestream2_get_be32(&gb); - if (chunk_type != 0x3 && chunk_type != 0x3d) { - av_log(avctx, AV_LOG_ERROR, "Invalid chunk type %d\n", chunk_type); - return AVERROR_INVALIDDATA; - } - - ret = brpix_decode_header(&hdr, &gb); - if (!ret) { - 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: - avctx->pix_fmt = AV_PIX_FMT_0RGB; - bytes_pp = 4; - break; - case 18: - avctx->pix_fmt = AV_PIX_FMT_GRAY8A; - bytes_pp = 2; - break; - default: - av_log(avctx, AV_LOG_ERROR, "Format %d is not supported\n", - 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 == 0x3 || chunk_type == 0x3d)) { - BRPixHeader palhdr; - uint32_t *pal_out = (uint32_t *)frame->data[1]; - int i; - - ret = brpix_decode_header(&palhdr, &gb); - if (!ret) { - av_log(avctx, AV_LOG_ERROR, "Invalid palette header length\n"); - return AVERROR_INVALIDDATA; - } - if (palhdr.format != 7) { - av_log(avctx, AV_LOG_ERROR, "Palette is not in 0RGB format\n"); - return AVERROR_INVALIDDATA; - } - - chunk_type = bytestream2_get_be32(&gb); - data_len = bytestream2_get_be32(&gb); - bytestream2_skip(&gb, 8); - if (chunk_type != 0x21 || data_len != 1032 || - bytestream2_get_bytes_left(&gb) < 1032) { - av_log(avctx, AV_LOG_ERROR, "Invalid palette data\n"); - return AVERROR_INVALIDDATA; - } - // convert 0RGB to machine endian format (ARGB32) - for (i = 0; i < 256; ++i) { - bytestream2_skipu(&gb, 1); - *pal_out++ = (0xFFU << 24) | bytestream2_get_be24u(&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) { - uint32_t *pal_out = (uint32_t *)frame->data[1]; - int i; - - for (i = 0; i < 256; ++i) { - *pal_out++ = (0xFFU << 24) | (i * 0x010101); - } - frame->palette_has_changed = 1; - } - - data_len = bytestream2_get_be32(&gb); - bytestream2_skip(&gb, 8); - - // read the image data to the buffer - { - unsigned int bytes_per_scanline = bytes_pp * hdr.width; - unsigned int bytes_left = bytestream2_get_bytes_left(&gb); - - if (chunk_type != 0x21 || data_len != bytes_left || - bytes_left / bytes_per_scanline < hdr.height) - { - 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); - } - - *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 = brpix_decode_frame, - .capabilities = CODEC_CAP_DR1, -}; 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