X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Ffraps.c;h=5f5e55e8ff13c199005cc5248ad646eed25000a3;hb=b6e8ff72ea055f40ee272a97bde3ff21b3ea6c27;hp=a8fbbf106f9ba0353ee9610923a9f7752e302a63;hpb=b81f89490fd51165725fbdc02a36cd407c70ec75;p=ffmpeg diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c index a8fbbf106f9..5f5e55e8ff1 100644 --- a/libavcodec/fraps.c +++ b/libavcodec/fraps.c @@ -1,38 +1,43 @@ /* * Fraps FPS1 decoder * Copyright (c) 2005 Roine Gustafsson + * Copyright (c) 2006 Konstantin Shishkov * - * This library is free software; you can redistribute it and/or + * 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 of the License, or (at your option) any later version. + * version 2.1 of the License, or (at your option) any later version. * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ - + /** - * @file fraps.c + * @file * Lossless Fraps 'FPS1' decoder - * @author Roine Gustafsson - * - * Only decodes version 0 and 1 files. + * @author Roine Gustafsson (roine at users sf net) + * @author Konstantin Shishkov + * * Codec algorithm for version 0 is taken from Transcode * - * Version 2 files, which are the most commonly found Fraps files, cannot be - * decoded yet. + * Version 2 files support by Konstantin Shishkov */ - + #include "avcodec.h" +#include "get_bits.h" +#include "huffman.h" +#include "bytestream.h" +#include "dsputil.h" -#define FPS_TAG MKTAG('F', 'P', 'S', '1') +#define FPS_TAG MKTAG('F', 'P', 'S', 'x') /** * local variable storage @@ -40,6 +45,9 @@ typedef struct FrapsContext{ AVCodecContext *avctx; AVFrame frame; + uint8_t *tmpbuf; + int tmpbuf_size; + DSPContext dsp; } FrapsContext; @@ -48,93 +56,140 @@ typedef struct FrapsContext{ * @param avctx codec context * @return 0 on success or negative if fails */ -static int decode_init(AVCodecContext *avctx) +static av_cold int decode_init(AVCodecContext *avctx) { FrapsContext * const s = avctx->priv_data; avctx->coded_frame = (AVFrame*)&s->frame; - avctx->has_b_frames = 0; avctx->pix_fmt= PIX_FMT_NONE; /* set in decode_frame */ s->avctx = avctx; - s->frame.data[0] = NULL; + s->tmpbuf = NULL; + + dsputil_init(&s->dsp, avctx); return 0; } +/** + * Comparator - our nodes should ascend by count + * but with preserved symbol order + */ +static int huff_cmp(const void *va, const void *vb){ + const Node *a = va, *b = vb; + return (a->count - b->count)*256 + a->sym - b->sym; +} /** - * decode a frame - * @param avctx codec context - * @param data output AVFrame - * @param data_size size of output data or 0 if no picture is returned - * @param buf input data frame - * @param buf_size size of input data frame - * @return number of consumed bytes on success or negative if decode fails + * decode Fraps v2 packed plane */ -static int decode_frame(AVCodecContext *avctx, +static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w, + int h, const uint8_t *src, int size, int Uoff, + const int step) +{ + int i, j; + GetBitContext gb; + VLC vlc; + Node nodes[512]; + + for(i = 0; i < 256; i++) + nodes[i].count = bytestream_get_le32(&src); + size -= 1024; + if (ff_huff_build_tree(s->avctx, &vlc, 256, nodes, huff_cmp, + FF_HUFFMAN_FLAG_ZERO_COUNT) < 0) + return -1; + /* we have built Huffman table and are ready to decode plane */ + + /* convert bits so they may be used by standard bitreader */ + s->dsp.bswap_buf((uint32_t *)s->tmpbuf, (const uint32_t *)src, size >> 2); + + init_get_bits(&gb, s->tmpbuf, size * 8); + for(j = 0; j < h; j++){ + for(i = 0; i < w*step; i += step){ + dst[i] = get_vlc2(&gb, vlc.table, 9, 3); + /* lines are stored as deltas between previous lines + * and we need to add 0x80 to the first lines of chroma planes + */ + if(j) dst[i] += dst[i - stride]; + else if(Uoff) dst[i] += 0x80; + if (get_bits_left(&gb) < 0) { + free_vlc(&vlc); + return AVERROR_INVALIDDATA; + } + } + dst += stride; + } + free_vlc(&vlc); + return 0; +} + +static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, - uint8_t *buf, int buf_size) + AVPacket *avpkt) { + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; FrapsContext * const s = avctx->priv_data; AVFrame *frame = data; AVFrame * const f = (AVFrame*)&s->frame; uint32_t header; unsigned int version,header_size; unsigned int x, y; - uint32_t *buf32; + const uint32_t *buf32; uint32_t *luma1,*luma2,*cb,*cr; + uint32_t offs[4]; + int i, j, is_chroma, planes; - header = LE_32(buf); + header = AV_RL32(buf); version = header & 0xff; header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */ - if (version > 1) { - av_log(avctx, AV_LOG_ERROR, + if (version > 5) { + av_log(avctx, AV_LOG_ERROR, "This file is encoded with Fraps version %d. " \ - "This codec can only decode version 0 and 1.\n", version); + "This codec can only decode versions <= 5.\n", version); return -1; } buf+=4; if (header_size == 8) buf+=4; - + switch(version) { case 0: default: /* Fraps v0 is a reordered YUV420 */ - avctx->pix_fmt = PIX_FMT_YUV420P; + avctx->pix_fmt = PIX_FMT_YUVJ420P; - if ( (buf_size != avctx->width*avctx->height*3/2+header_size) && + if ( (buf_size != avctx->width*avctx->height*3/2+header_size) && (buf_size != header_size) ) { av_log(avctx, AV_LOG_ERROR, - "Invalid frame length %d (should be %d)\n", + "Invalid frame length %d (should be %d)\n", buf_size, avctx->width*avctx->height*3/2+header_size); return -1; } - + if (( (avctx->width % 8) != 0) || ( (avctx->height % 2) != 0 )) { - av_log(avctx, AV_LOG_ERROR, "Invalid frame size %dx%d\n", + av_log(avctx, AV_LOG_ERROR, "Invalid frame size %dx%d\n", avctx->width, avctx->height); return -1; } - f->reference = 1; - f->buffer_hints = FF_BUFFER_HINTS_VALID | - FF_BUFFER_HINTS_PRESERVE | + f->reference = 1; + f->buffer_hints = FF_BUFFER_HINTS_VALID | + FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; if (avctx->reget_buffer(avctx, f)) { av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); return -1; - } + } /* bit 31 means same as previous pic */ - f->pict_type = (header & (1<<31))? FF_P_TYPE : FF_I_TYPE; - f->key_frame = f->pict_type == FF_I_TYPE; + f->pict_type = (header & (1U<<31))? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I; + f->key_frame = f->pict_type == AV_PICTURE_TYPE_I; - if (f->pict_type == FF_I_TYPE) { - buf32=(uint32_t*)buf; + if (f->pict_type == AV_PICTURE_TYPE_I) { + buf32=(const uint32_t*)buf; for(y=0; yheight/2; y++){ luma1=(uint32_t*)&f->data[0][ y*2*f->linesize[0] ]; luma2=(uint32_t*)&f->data[0][ (y*2+1)*f->linesize[0] ]; @@ -156,9 +211,9 @@ static int decode_frame(AVCodecContext *avctx, /* Fraps v1 is an upside-down BGR24 */ avctx->pix_fmt = PIX_FMT_BGR24; - if ( (buf_size != avctx->width*avctx->height*3+header_size) && + if ( (buf_size != avctx->width*avctx->height*3+header_size) && (buf_size != header_size) ) { - av_log(avctx, AV_LOG_ERROR, + av_log(avctx, AV_LOG_ERROR, "Invalid frame length %d (should be %d)\n", buf_size, avctx->width*avctx->height*3+header_size); return -1; @@ -173,42 +228,117 @@ static int decode_frame(AVCodecContext *avctx, return -1; } /* bit 31 means same as previous pic */ - f->pict_type = (header & (1<<31))? FF_P_TYPE : FF_I_TYPE; - f->key_frame = f->pict_type == FF_I_TYPE; + f->pict_type = (header & (1U<<31))? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I; + f->key_frame = f->pict_type == AV_PICTURE_TYPE_I; - if (f->pict_type == FF_I_TYPE) { + if (f->pict_type == AV_PICTURE_TYPE_I) { for(y=0; yheight; y++) memcpy(&f->data[0][ (avctx->height-y)*f->linesize[0] ], &buf[y*avctx->width*3], - f->linesize[0]); + 3*avctx->width); } break; case 2: + case 4: /** - * Fraps v2 sub-header description. All numbers are little-endian: - * (this is all guesswork) - * - * 0: DWORD 'FPSx' - * 4: DWORD 0x00000010 unknown, perhaps flags - * 8: DWORD off_2 offset to plane 2 - * 12: DWORD off_3 offset to plane 3 - * 16: 256xDWORD freqtbl_1 frequency table for plane 1 - * 1040: plane_1 - * ... - * off_2: 256xDWORD freqtbl_2 frequency table for plane 2 - * plane_2 - * ... - * off_3: 256xDWORD freqtbl_3 frequency table for plane 3 - * plane_3 + * Fraps v2 is Huffman-coded YUV420 planes + * Fraps v4 is virtually the same */ - if ((BE_32(buf) != FPS_TAG)||(buf_size < (3*1024 + 8))) { + avctx->pix_fmt = PIX_FMT_YUVJ420P; + planes = 3; + f->reference = 1; + f->buffer_hints = FF_BUFFER_HINTS_VALID | + FF_BUFFER_HINTS_PRESERVE | + FF_BUFFER_HINTS_REUSABLE; + if (avctx->reget_buffer(avctx, f)) { + av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return -1; + } + /* skip frame */ + if(buf_size == 8) { + f->pict_type = AV_PICTURE_TYPE_P; + f->key_frame = 0; + break; + } + f->pict_type = AV_PICTURE_TYPE_I; + f->key_frame = 1; + if ((AV_RL32(buf) != FPS_TAG)||(buf_size < (planes*1024 + 24))) { av_log(avctx, AV_LOG_ERROR, "Fraps: error in data stream\n"); return -1; } - - /* NOT FINISHED */ - + for(i = 0; i < planes; i++) { + offs[i] = AV_RL32(buf + 4 + i * 4); + if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) { + av_log(avctx, AV_LOG_ERROR, "Fraps: plane %i offset is out of bounds\n", i); + return -1; + } + } + offs[planes] = buf_size; + for(i = 0; i < planes; i++){ + is_chroma = !!i; + av_fast_padded_malloc(&s->tmpbuf, &s->tmpbuf_size, + offs[i + 1] - offs[i] - 1024); + if (!s->tmpbuf) + return AVERROR(ENOMEM); + if(fraps2_decode_plane(s, f->data[i], f->linesize[i], avctx->width >> is_chroma, + avctx->height >> is_chroma, buf + offs[i], offs[i + 1] - offs[i], is_chroma, 1) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i); + return -1; + } + } + break; + case 3: + case 5: + /* Virtually the same as version 4, but is for RGB24 */ + avctx->pix_fmt = PIX_FMT_BGR24; + planes = 3; + f->reference = 1; + f->buffer_hints = FF_BUFFER_HINTS_VALID | + FF_BUFFER_HINTS_PRESERVE | + FF_BUFFER_HINTS_REUSABLE; + if (avctx->reget_buffer(avctx, f)) { + av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return -1; + } + /* skip frame */ + if(buf_size == 8) { + f->pict_type = AV_PICTURE_TYPE_P; + f->key_frame = 0; + break; + } + f->pict_type = AV_PICTURE_TYPE_I; + f->key_frame = 1; + if ((AV_RL32(buf) != FPS_TAG)||(buf_size < (planes*1024 + 24))) { + av_log(avctx, AV_LOG_ERROR, "Fraps: error in data stream\n"); + return -1; + } + for(i = 0; i < planes; i++) { + offs[i] = AV_RL32(buf + 4 + i * 4); + if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) { + av_log(avctx, AV_LOG_ERROR, "Fraps: plane %i offset is out of bounds\n", i); + return -1; + } + } + offs[planes] = buf_size; + for(i = 0; i < planes; i++){ + av_fast_padded_malloc(&s->tmpbuf, &s->tmpbuf_size, + offs[i + 1] - offs[i] - 1024); + if (!s->tmpbuf) + return AVERROR(ENOMEM); + if(fraps2_decode_plane(s, f->data[0] + i + (f->linesize[0] * (avctx->height - 1)), -f->linesize[0], + avctx->width, avctx->height, buf + offs[i], offs[i + 1] - offs[i], 0, 3) < 0) { + av_log(avctx, AV_LOG_ERROR, "Error decoding plane %i\n", i); + return -1; + } + } + // convert pseudo-YUV into real RGB + for(j = 0; j < avctx->height; j++){ + for(i = 0; i < avctx->width; i++){ + f->data[0][0 + i*3 + j*f->linesize[0]] += f->data[0][1 + i*3 + j*f->linesize[0]]; + f->data[0][2 + i*3 + j*f->linesize[0]] += f->data[0][1 + i*3 + j*f->linesize[0]]; + } + } break; } @@ -224,25 +354,26 @@ static int decode_frame(AVCodecContext *avctx, * @param avctx codec context * @return 0 on success or negative if fails */ -static int decode_end(AVCodecContext *avctx) +static av_cold int decode_end(AVCodecContext *avctx) { FrapsContext *s = (FrapsContext*)avctx->priv_data; if (s->frame.data[0]) avctx->release_buffer(avctx, &s->frame); + av_freep(&s->tmpbuf); return 0; } -AVCodec fraps_decoder = { - "fraps", - CODEC_TYPE_VIDEO, - CODEC_ID_FRAPS, - sizeof(FrapsContext), - decode_init, - NULL, - decode_end, - decode_frame, - CODEC_CAP_DR1, +AVCodec ff_fraps_decoder = { + .name = "fraps", + .type = AVMEDIA_TYPE_VIDEO, + .id = CODEC_ID_FRAPS, + .priv_data_size = sizeof(FrapsContext), + .init = decode_init, + .close = decode_end, + .decode = decode_frame, + .capabilities = CODEC_CAP_DR1, + .long_name = NULL_IF_CONFIG_SMALL("Fraps"), };