2010-02-03 09:56:16 +00:00
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/*
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* IFF PBM/ILBM bitmap decoder
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* Copyright (c) 2010 Peter Ross <pross@xvid.org>
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2010-04-26 22:37:13 +00:00
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* Copyright (c) 2010 Sebastian Vater <cdgs.basty@googlemail.com>
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2010-02-03 09:56:16 +00:00
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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2010-04-20 14:45:34 +00:00
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* @file
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2010-02-03 09:56:16 +00:00
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* IFF PBM/ILBM bitmap decoder
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*/
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#include "bytestream.h"
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#include "avcodec.h"
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2010-02-15 11:26:35 +00:00
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#include "get_bits.h"
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2010-03-08 02:36:00 +00:00
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#include "iff.h"
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2010-02-15 11:26:35 +00:00
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typedef struct {
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AVFrame frame;
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2010-05-03 22:08:31 +00:00
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int planesize;
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2010-02-15 11:26:35 +00:00
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uint8_t * planebuf;
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} IffContext;
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2010-02-03 09:56:16 +00:00
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2010-05-08 21:48:44 +00:00
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#define LUT8_PART(plane, v) \
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AV_LE2ME64C(UINT64_C(0x0000000)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1000000)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0010000)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1010000)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0000100)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1000100)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0010100)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1010100)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0000001)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1000001)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0010001)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1010001)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0000101)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1000101)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x0010101)<<32 | v) << plane, \
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AV_LE2ME64C(UINT64_C(0x1010101)<<32 | v) << plane
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#define LUT8(plane) { \
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LUT8_PART(plane, 0x0000000), \
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LUT8_PART(plane, 0x1000000), \
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LUT8_PART(plane, 0x0010000), \
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LUT8_PART(plane, 0x1010000), \
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LUT8_PART(plane, 0x0000100), \
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LUT8_PART(plane, 0x1000100), \
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LUT8_PART(plane, 0x0010100), \
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LUT8_PART(plane, 0x1010100), \
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LUT8_PART(plane, 0x0000001), \
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LUT8_PART(plane, 0x1000001), \
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LUT8_PART(plane, 0x0010001), \
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LUT8_PART(plane, 0x1010001), \
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LUT8_PART(plane, 0x0000101), \
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LUT8_PART(plane, 0x1000101), \
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LUT8_PART(plane, 0x0010101), \
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LUT8_PART(plane, 0x1010101), \
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}
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// 8 planes * 8-bit mask
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static const uint64_t plane8_lut[8][256] = {
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LUT8(0), LUT8(1), LUT8(2), LUT8(3),
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LUT8(4), LUT8(5), LUT8(6), LUT8(7),
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};
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2010-05-10 17:18:09 +00:00
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#define LUT32(plane) { \
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0, 0, 0, 0, \
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0, 0, 0, 1 << plane, \
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0, 0, 1 << plane, 0, \
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0, 0, 1 << plane, 1 << plane, \
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0, 1 << plane, 0, 0, \
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0, 1 << plane, 0, 1 << plane, \
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0, 1 << plane, 1 << plane, 0, \
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0, 1 << plane, 1 << plane, 1 << plane, \
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1 << plane, 0, 0, 0, \
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1 << plane, 0, 0, 1 << plane, \
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1 << plane, 0, 1 << plane, 0, \
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1 << plane, 0, 1 << plane, 1 << plane, \
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1 << plane, 1 << plane, 0, 0, \
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1 << plane, 1 << plane, 0, 1 << plane, \
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1 << plane, 1 << plane, 1 << plane, 0, \
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1 << plane, 1 << plane, 1 << plane, 1 << plane, \
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}
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// 32 planes * 4-bit mask * 4 lookup tables each
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static const uint32_t plane32_lut[32][16*4] = {
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LUT32( 0), LUT32( 1), LUT32( 2), LUT32( 3),
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LUT32( 4), LUT32( 5), LUT32( 6), LUT32( 7),
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LUT32( 8), LUT32( 9), LUT32(10), LUT32(11),
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LUT32(12), LUT32(13), LUT32(14), LUT32(15),
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LUT32(16), LUT32(17), LUT32(18), LUT32(19),
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LUT32(20), LUT32(21), LUT32(22), LUT32(23),
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LUT32(24), LUT32(25), LUT32(26), LUT32(27),
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LUT32(28), LUT32(29), LUT32(30), LUT32(31),
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};
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2010-02-03 09:56:16 +00:00
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/**
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* Convert CMAP buffer (stored in extradata) to lavc palette format
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*/
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int ff_cmap_read_palette(AVCodecContext *avctx, uint32_t *pal)
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{
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2010-05-03 22:08:31 +00:00
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int count, i;
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2010-02-03 09:56:16 +00:00
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if (avctx->bits_per_coded_sample > 8) {
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av_log(avctx, AV_LOG_ERROR, "bit_per_coded_sample > 8 not supported\n");
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return AVERROR_INVALIDDATA;
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}
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count = 1 << avctx->bits_per_coded_sample;
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2010-05-13 15:33:36 +00:00
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// If extradata is smaller than actually needed, fill the remaining with black.
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count = FFMIN(avctx->extradata_size / 3, count);
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2010-02-03 09:56:16 +00:00
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for (i=0; i < count; i++) {
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2010-02-15 11:26:35 +00:00
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pal[i] = 0xFF000000 | AV_RB24( avctx->extradata + i*3 );
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2010-02-03 09:56:16 +00:00
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}
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return 0;
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}
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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2010-02-15 11:26:35 +00:00
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IffContext *s = avctx->priv_data;
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2010-03-13 19:19:40 +00:00
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int err;
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2010-02-15 11:26:35 +00:00
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if (avctx->bits_per_coded_sample <= 8) {
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avctx->pix_fmt = PIX_FMT_PAL8;
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} else if (avctx->bits_per_coded_sample <= 32) {
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avctx->pix_fmt = PIX_FMT_BGR32;
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} else {
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return AVERROR_INVALIDDATA;
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}
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2010-02-03 09:56:16 +00:00
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2010-05-10 17:00:56 +00:00
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if ((err = avcodec_check_dimensions(avctx, avctx->width, avctx->height)))
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return err;
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2010-05-05 17:02:55 +00:00
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s->planesize = FFALIGN(avctx->width, 16) >> 3; // Align plane size in bits to word-boundary
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2010-02-15 11:26:35 +00:00
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s->planebuf = av_malloc(s->planesize + FF_INPUT_BUFFER_PADDING_SIZE);
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if (!s->planebuf)
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return AVERROR(ENOMEM);
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2010-02-03 09:56:16 +00:00
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2010-02-15 11:26:35 +00:00
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s->frame.reference = 1;
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2010-03-13 19:19:40 +00:00
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if ((err = avctx->get_buffer(avctx, &s->frame) < 0)) {
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2010-02-03 09:56:16 +00:00
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
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2010-03-13 19:19:40 +00:00
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return err;
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2010-02-03 09:56:16 +00:00
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}
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2010-02-15 11:26:35 +00:00
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return avctx->bits_per_coded_sample <= 8 ?
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ff_cmap_read_palette(avctx, (uint32_t*)s->frame.data[1]) : 0;
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2010-02-03 09:56:16 +00:00
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}
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/**
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2010-04-26 22:00:57 +00:00
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* Decode interleaved plane buffer up to 8bpp
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* @param dst Destination buffer
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* @param buf Source buffer
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* @param buf_size
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* @param plane plane number to decode as
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*/
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2010-05-09 20:08:13 +00:00
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static void decodeplane8(uint8_t *dst, const uint8_t *buf, int buf_size, int plane)
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2010-04-26 22:00:57 +00:00
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{
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2010-05-08 21:48:44 +00:00
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const uint64_t *lut = plane8_lut[plane];
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2010-05-13 13:18:25 +00:00
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do {
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2010-05-08 21:48:44 +00:00
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uint64_t v = AV_RN64A(dst) | lut[*buf++];
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AV_WN64A(dst, v);
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2010-05-09 16:24:20 +00:00
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dst += 8;
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2010-05-13 13:18:25 +00:00
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} while (--buf_size);
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2010-04-26 22:00:57 +00:00
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}
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/**
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* Decode interleaved plane buffer up to 24bpp
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2010-02-15 11:26:35 +00:00
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* @param dst Destination buffer
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* @param buf Source buffer
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* @param buf_size
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* @param plane plane number to decode as
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2010-02-03 09:56:16 +00:00
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*/
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2010-05-10 17:18:09 +00:00
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static void decodeplane32(uint32_t *dst, const uint8_t *buf, int buf_size, int plane)
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2010-04-26 22:00:57 +00:00
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{
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2010-05-10 17:18:09 +00:00
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const uint32_t *lut = plane32_lut[plane];
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do {
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unsigned mask = (*buf >> 2) & ~3;
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dst[0] |= lut[mask++];
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dst[1] |= lut[mask++];
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dst[2] |= lut[mask++];
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dst[3] |= lut[mask];
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mask = (*buf++ << 2) & 0x3F;
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dst[4] |= lut[mask++];
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dst[5] |= lut[mask++];
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dst[6] |= lut[mask++];
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dst[7] |= lut[mask];
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dst += 8;
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} while (--buf_size);
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2010-02-03 09:56:16 +00:00
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}
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static int decode_frame_ilbm(AVCodecContext *avctx,
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void *data, int *data_size,
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AVPacket *avpkt)
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{
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2010-02-15 11:26:35 +00:00
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IffContext *s = avctx->priv_data;
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2010-02-03 09:56:16 +00:00
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const uint8_t *buf = avpkt->data;
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2010-05-03 22:08:31 +00:00
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int buf_size = avpkt->size;
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2010-02-16 09:33:59 +00:00
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const uint8_t *buf_end = buf+buf_size;
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2010-05-03 22:08:31 +00:00
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int y, plane;
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2010-02-03 09:56:16 +00:00
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2010-02-15 11:26:35 +00:00
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if (avctx->reget_buffer(avctx, &s->frame) < 0){
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2010-02-03 09:56:16 +00:00
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
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return -1;
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}
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2010-05-13 15:39:40 +00:00
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if (avctx->codec_tag == MKTAG('I','L','B','M')) { // interleaved
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2010-05-13 15:41:49 +00:00
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if (avctx->pix_fmt == PIX_FMT_PAL8) {
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for(y = 0; y < avctx->height; y++ ) {
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uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
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memset(row, 0, avctx->width);
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for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
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decodeplane8(row, buf, FFMIN(s->planesize, buf_end - buf), plane);
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buf += s->planesize;
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}
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2010-04-26 22:38:41 +00:00
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}
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2010-05-13 15:41:49 +00:00
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} else { // PIX_FMT_BGR32
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for(y = 0; y < avctx->height; y++ ) {
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uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
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memset(row, 0, avctx->width << 2);
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for (plane = 0; plane < avctx->bits_per_coded_sample && buf < buf_end; plane++) {
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decodeplane32((uint32_t *) row, buf, FFMIN(s->planesize, buf_end - buf), plane);
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buf += s->planesize;
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}
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2010-04-26 22:38:41 +00:00
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}
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2010-02-03 09:56:16 +00:00
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}
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2010-05-13 15:39:40 +00:00
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} else if (avctx->pix_fmt == PIX_FMT_PAL8) { // IFF-PBM
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for(y = 0; y < avctx->height; y++ ) {
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uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];
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memcpy(row, buf, FFMIN(avctx->width, buf_end - buf));
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buf += avctx->width;
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}
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}
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2010-02-03 09:56:16 +00:00
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*data_size = sizeof(AVFrame);
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2010-02-15 11:26:35 +00:00
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*(AVFrame*)data = s->frame;
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2010-02-03 09:56:16 +00:00
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return buf_size;
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}
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static int decode_frame_byterun1(AVCodecContext *avctx,
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void *data, int *data_size,
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AVPacket *avpkt)
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{
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2010-02-15 11:26:35 +00:00
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IffContext *s = avctx->priv_data;
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2010-02-03 09:56:16 +00:00
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const uint8_t *buf = avpkt->data;
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2010-05-03 22:08:31 +00:00
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int buf_size = avpkt->size;
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2010-02-03 09:56:16 +00:00
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const uint8_t *buf_end = buf+buf_size;
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2010-05-03 22:08:31 +00:00
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int y, plane, x;
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2010-02-03 09:56:16 +00:00
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2010-02-15 11:26:35 +00:00
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if (avctx->reget_buffer(avctx, &s->frame) < 0){
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2010-02-03 09:56:16 +00:00
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av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
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return -1;
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}
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2010-04-26 22:38:41 +00:00
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if (avctx->codec_tag == MKTAG('I','L','B','M')) { //interleaved
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if (avctx->pix_fmt == PIX_FMT_PAL8) {
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2010-04-26 22:39:08 +00:00
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for(y = 0; y < avctx->height ; y++ ) {
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uint8_t *row = &s->frame.data[0][ y*s->frame.linesize[0] ];
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memset(row, 0, avctx->width);
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|
|
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
|
|
|
|
for(x = 0; x < s->planesize && buf < buf_end; ) {
|
|
|
|
int8_t value = *buf++;
|
|
|
|
unsigned length;
|
|
|
|
if (value >= 0) {
|
|
|
|
length = value + 1;
|
|
|
|
memcpy(s->planebuf + x, buf, FFMIN3(length, s->planesize - x, buf_end - buf));
|
|
|
|
buf += length;
|
|
|
|
} else if (value > -128) {
|
|
|
|
length = -value + 1;
|
|
|
|
memset(s->planebuf + x, *buf++, FFMIN(length, s->planesize - x));
|
|
|
|
} else { //noop
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
x += length;
|
2010-02-03 09:56:16 +00:00
|
|
|
}
|
2010-05-09 20:08:13 +00:00
|
|
|
decodeplane8(row, s->planebuf, s->planesize, plane);
|
2010-04-26 22:38:41 +00:00
|
|
|
}
|
|
|
|
}
|
2010-04-26 22:39:08 +00:00
|
|
|
} else { //PIX_FMT_BGR32
|
2010-04-26 22:38:41 +00:00
|
|
|
for(y = 0; y < avctx->height ; y++ ) {
|
|
|
|
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
|
|
|
|
memset(row, 0, avctx->width << 2);
|
|
|
|
for (plane = 0; plane < avctx->bits_per_coded_sample; plane++) {
|
|
|
|
for(x = 0; x < s->planesize && buf < buf_end; ) {
|
|
|
|
int8_t value = *buf++;
|
|
|
|
unsigned length;
|
|
|
|
if (value >= 0) {
|
|
|
|
length = value + 1;
|
|
|
|
memcpy(s->planebuf + x, buf, FFMIN3(length, s->planesize - x, buf_end - buf));
|
|
|
|
buf += length;
|
|
|
|
} else if (value > -128) {
|
|
|
|
length = -value + 1;
|
|
|
|
memset(s->planebuf + x, *buf++, FFMIN(length, s->planesize - x));
|
|
|
|
} else { // noop
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
x += length;
|
|
|
|
}
|
2010-05-09 20:08:13 +00:00
|
|
|
decodeplane32((uint32_t *) row, s->planebuf, s->planesize, plane);
|
2010-02-15 11:26:35 +00:00
|
|
|
}
|
2010-02-03 09:56:16 +00:00
|
|
|
}
|
2010-04-26 22:38:41 +00:00
|
|
|
}
|
2010-04-26 22:39:08 +00:00
|
|
|
} else {
|
|
|
|
for(y = 0; y < avctx->height ; y++ ) {
|
|
|
|
uint8_t *row = &s->frame.data[0][y*s->frame.linesize[0]];
|
2010-02-03 09:56:16 +00:00
|
|
|
for(x = 0; x < avctx->width && buf < buf_end; ) {
|
2010-02-12 18:18:35 +00:00
|
|
|
int8_t value = *buf++;
|
2010-04-26 22:37:13 +00:00
|
|
|
unsigned length;
|
2010-02-03 09:56:16 +00:00
|
|
|
if (value >= 0) {
|
|
|
|
length = value + 1;
|
|
|
|
memcpy(row + x, buf, FFMIN3(length, buf_end - buf, avctx->width - x));
|
|
|
|
buf += length;
|
|
|
|
} else if (value > -128) {
|
|
|
|
length = -value + 1;
|
|
|
|
memset(row + x, *buf++, FFMIN(length, avctx->width - x));
|
|
|
|
} else { //noop
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
x += length;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
*data_size = sizeof(AVFrame);
|
2010-02-15 11:26:35 +00:00
|
|
|
*(AVFrame*)data = s->frame;
|
2010-02-03 09:56:16 +00:00
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
|
|
{
|
2010-02-15 11:26:35 +00:00
|
|
|
IffContext *s = avctx->priv_data;
|
|
|
|
if (s->frame.data[0])
|
|
|
|
avctx->release_buffer(avctx, &s->frame);
|
|
|
|
av_freep(&s->planebuf);
|
2010-02-03 09:56:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec iff_ilbm_decoder = {
|
|
|
|
"iff_ilbm",
|
2010-03-30 23:30:55 +00:00
|
|
|
AVMEDIA_TYPE_VIDEO,
|
2010-02-03 09:56:16 +00:00
|
|
|
CODEC_ID_IFF_ILBM,
|
2010-02-15 11:26:35 +00:00
|
|
|
sizeof(IffContext),
|
2010-02-03 09:56:16 +00:00
|
|
|
decode_init,
|
|
|
|
NULL,
|
|
|
|
decode_end,
|
|
|
|
decode_frame_ilbm,
|
|
|
|
CODEC_CAP_DR1,
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("IFF ILBM"),
|
|
|
|
};
|
|
|
|
|
|
|
|
AVCodec iff_byterun1_decoder = {
|
|
|
|
"iff_byterun1",
|
2010-03-30 23:30:55 +00:00
|
|
|
AVMEDIA_TYPE_VIDEO,
|
2010-02-03 09:56:16 +00:00
|
|
|
CODEC_ID_IFF_BYTERUN1,
|
2010-02-15 11:26:35 +00:00
|
|
|
sizeof(IffContext),
|
2010-02-03 09:56:16 +00:00
|
|
|
decode_init,
|
|
|
|
NULL,
|
|
|
|
decode_end,
|
|
|
|
decode_frame_byterun1,
|
|
|
|
CODEC_CAP_DR1,
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("IFF ByteRun1"),
|
|
|
|
};
|