X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fflicvideo.c;h=a78fe5e07774e047d5f6200f143b11be1378789b;hb=3a6765fb5d263f1b16be57d5564678147ba7f438;hp=ea1d8c4261fd4938c140ebf7b6e2fca2dde7d937;hpb=6140271f545698b7084bb5e02c0cac25e5304289;p=ffmpeg diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c index ea1d8c4261f..a78fe5e0777 100644 --- a/libavcodec/flicvideo.c +++ b/libavcodec/flicvideo.c @@ -2,25 +2,25 @@ * FLI/FLC Animation Video Decoder * Copyright (C) 2003, 2004 the ffmpeg project * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * 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. * - * FFmpeg is distributed in the hope that it will be useful, + * 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 FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file flic.c + * @file * Autodesk Animator FLI/FLC Video Decoder * by Mike Melanson (melanson@pcisys.net) * for more information on the .fli/.flc file format and all of its many @@ -38,10 +38,9 @@ #include #include #include -#include +#include "libavutil/intreadwrite.h" #include "avcodec.h" -#include "bswap.h" #define FLI_256_COLOR 4 #define FLI_DELTA 7 @@ -113,7 +112,6 @@ static av_cold int flic_decode_init(AVCodecContext *avctx) case 24 : avctx->pix_fmt = PIX_FMT_BGR24; /* Supposedly BGR, but havent any files to test with */ av_log(avctx, AV_LOG_ERROR, "24Bpp FLC/FLX is unsupported due to no test files.\n"); return -1; - break; default : av_log(avctx, AV_LOG_ERROR, "Unknown FLC/FLX depth of %d Bpp is unsupported.\n",depth); return -1; @@ -160,7 +158,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx, int pixel_skip; int pixel_countdown; unsigned char *pixels; - int pixel_limit; + unsigned int pixel_limit; s->frame.reference = 1; s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; @@ -254,10 +252,13 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx, av_log(avctx, AV_LOG_ERROR, "Undefined opcode (%x) in DELTA_FLI\n", line_packets); } else if ((line_packets & 0xC000) == 0x8000) { // "last byte" opcode - pixels[y_ptr + s->frame.linesize[0] - 1] = line_packets & 0xff; + pixel_ptr= y_ptr + s->frame.linesize[0] - 1; + CHECK_PIXEL_PTR(0); + pixels[pixel_ptr] = line_packets & 0xff; } else { compressed_lines--; pixel_ptr = y_ptr; + CHECK_PIXEL_PTR(0); pixel_countdown = s->avctx->width; for (i = 0; i < line_packets; i++) { /* account for the skip bytes */ @@ -269,7 +270,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx, byte_run = -byte_run; palette_idx1 = buf[stream_ptr++]; palette_idx2 = buf[stream_ptr++]; - CHECK_PIXEL_PTR(byte_run); + CHECK_PIXEL_PTR(byte_run * 2); for (j = 0; j < byte_run; j++, pixel_countdown -= 2) { pixels[pixel_ptr++] = palette_idx1; pixels[pixel_ptr++] = palette_idx2; @@ -299,6 +300,7 @@ static int flic_decode_frame_8BPP(AVCodecContext *avctx, stream_ptr += 2; while (compressed_lines > 0) { pixel_ptr = y_ptr; + CHECK_PIXEL_PTR(0); pixel_countdown = s->avctx->width; line_packets = buf[stream_ptr++]; if (line_packets > 0) { @@ -454,7 +456,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, int pixel_countdown; unsigned char *pixels; int pixel; - int pixel_limit; + unsigned int pixel_limit; s->frame.reference = 1; s->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; @@ -504,6 +506,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, } else { compressed_lines--; pixel_ptr = y_ptr; + CHECK_PIXEL_PTR(0); pixel_countdown = s->avctx->width; for (i = 0; i < line_packets; i++) { /* account for the skip bytes */ @@ -515,13 +518,13 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, byte_run = -byte_run; pixel = AV_RL16(&buf[stream_ptr]); stream_ptr += 2; - CHECK_PIXEL_PTR(byte_run); + CHECK_PIXEL_PTR(2 * byte_run); for (j = 0; j < byte_run; j++, pixel_countdown -= 2) { *((signed short*)(&pixels[pixel_ptr])) = pixel; pixel_ptr += 2; } } else { - CHECK_PIXEL_PTR(byte_run); + CHECK_PIXEL_PTR(2 * byte_run); for (j = 0; j < byte_run; j++, pixel_countdown--) { *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]); stream_ptr += 2; @@ -586,7 +589,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, * during decompression. So if it is required (i.e., this is not a LE target, we do * a second pass over the line here, swapping the bytes. */ -#ifdef WORDS_BIGENDIAN +#if HAVE_BIGENDIAN pixel_ptr = y_ptr; pixel_countdown = s->avctx->width; while (pixel_countdown > 0) { @@ -612,7 +615,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, if (byte_run > 0) { pixel = AV_RL16(&buf[stream_ptr]); stream_ptr += 2; - CHECK_PIXEL_PTR(byte_run); + CHECK_PIXEL_PTR(2 * byte_run); for (j = 0; j < byte_run; j++) { *((signed short*)(&pixels[pixel_ptr])) = pixel; pixel_ptr += 2; @@ -623,7 +626,7 @@ static int flic_decode_frame_15_16BPP(AVCodecContext *avctx, } } else { /* copy pixels if byte_run < 0 */ byte_run = -byte_run; - CHECK_PIXEL_PTR(byte_run); + CHECK_PIXEL_PTR(2 * byte_run); for (j = 0; j < byte_run; j++) { *((signed short*)(&pixels[pixel_ptr])) = AV_RL16(&buf[stream_ptr]); stream_ptr += 2; @@ -701,8 +704,10 @@ static int flic_decode_frame_24BPP(AVCodecContext *avctx, static int flic_decode_frame(AVCodecContext *avctx, void *data, int *data_size, - const uint8_t *buf, int buf_size) + AVPacket *avpkt) { + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; if (avctx->pix_fmt == PIX_FMT_PAL8) { return flic_decode_frame_8BPP(avctx, data, data_size, buf, buf_size); @@ -736,19 +741,14 @@ static av_cold int flic_decode_end(AVCodecContext *avctx) return 0; } -AVCodec flic_decoder = { - "flic", - CODEC_TYPE_VIDEO, - CODEC_ID_FLIC, - sizeof(FlicDecodeContext), - flic_decode_init, - NULL, - flic_decode_end, - flic_decode_frame, - CODEC_CAP_DR1, - NULL, - NULL, - NULL, - NULL, - .long_name = "Autodesk Animator Flic video", +AVCodec ff_flic_decoder = { + .name = "flic", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_FLIC, + .priv_data_size = sizeof(FlicDecodeContext), + .init = flic_decode_init, + .close = flic_decode_end, + .decode = flic_decode_frame, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Autodesk Animator Flic video"), };