X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Ffraps.c;h=eb61c70c49005ab2df272992a6e33a0bd36f8aca;hb=901f9c0a32985f48672fd68594111dc55d88a57a;hp=fd2b8505f284c41032b49ea19621237d5f953e53;hpb=78629a746fcdfdd7bb04fbc644b56d0f5102b156;p=ffmpeg diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c index fd2b8505f28..eb61c70c490 100644 --- a/libavcodec/fraps.c +++ b/libavcodec/fraps.c @@ -3,28 +3,27 @@ * Copyright (c) 2005 Roine Gustafsson * Copyright (c) 2006 Konstantin Shishkov * - * 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 fraps.c + * @file * Lossless Fraps 'FPS1' decoder - * @author Roine Gustafsson + * @author Roine Gustafsson (roine at users sf net) * @author Konstantin Shishkov * * Codec algorithm for version 0 is taken from Transcode @@ -33,33 +32,24 @@ */ #include "avcodec.h" -#include "bitstream.h" -#include "dsputil.h" +#include "get_bits.h" +#include "huffman.h" +#include "bytestream.h" +#include "bswapdsp.h" +#include "internal.h" #define FPS_TAG MKTAG('F', 'P', 'S', 'x') - -/* symbol for Huffman tree node */ -#define HNODE -1 - -/** - * Huffman node - * FIXME one day this should belong to one general framework - */ -typedef struct Node{ - int16_t sym; - int16_t n0; - int count; -}Node; +#define VLC_BITS 11 /** * local variable storage */ -typedef struct FrapsContext{ +typedef struct FrapsContext { AVCodecContext *avctx; - AVFrame frame; - Node nodes[512]; + BswapDSPContext bdsp; + AVFrame *frame; uint8_t *tmpbuf; - DSPContext dsp; + int tmpbuf_size; } FrapsContext; @@ -68,19 +58,20 @@ 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 */ + avctx->pix_fmt = AV_PIX_FMT_NONE; /* set in decode_frame */ - s->avctx = avctx; - s->frame.data[0] = NULL; + s->avctx = avctx; s->tmpbuf = NULL; - dsputil_init(&s->dsp, avctx); + s->frame = av_frame_alloc(); + if (!s->frame) + return AVERROR(ENOMEM); + + ff_bswapdsp_init(&s->bdsp); return 0; } @@ -89,180 +80,143 @@ static int decode_init(AVCodecContext *avctx) * Comparator - our nodes should ascend by count * but with preserved symbol order */ -static int huff_cmp(const Node *a, const Node *b){ - return (a->count - b->count)*256 + a->sym - b->sym; -} - -static void get_tree_codes(uint32_t *bits, int16_t *lens, Node *nodes, int node, uint32_t pfx, int pl) -{ - int s; - - s = nodes[node].sym; - if(s != HNODE){ - bits[s] = pfx; - lens[s] = pl; - }else{ - pfx <<= 1; - pl++; - get_tree_codes(bits, lens, nodes, nodes[node].n0, pfx, pl); - pfx |= 1; - get_tree_codes(bits, lens, nodes, nodes[node].n0+1, pfx, pl); - } -} - -static int build_huff_tree(VLC *vlc, Node *nodes) +static int huff_cmp(const void *va, const void *vb) { - uint32_t bits[256]; - int16_t lens[256]; - - get_tree_codes(bits, lens, nodes, 510, 0, 0); - return init_vlc(vlc, 9, 256, lens, 2, 2, bits, 4, 4, 0); + const Node *a = va, *b = vb; + return (a->count - b->count)*256 + a->sym - b->sym; } - /** * decode Fraps v2 packed plane */ static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w, - int h, uint8_t *src, int size, int Uoff) + int h, const uint8_t *src, int size, int Uoff, + const int step) { - int i, j; - int cur_node; + int i, j, ret; GetBitContext gb; VLC vlc; - int64_t sum = 0; - - for(i = 0; i < 256; i++){ - s->nodes[i].sym = i; - s->nodes[i].count = LE_32(src); - s->nodes[i].n0 = -2; - src += 4; - sum += s->nodes[i].count; - } - size -= 1024; + Node nodes[512]; - if(sum >> 31) { - av_log(s->avctx, AV_LOG_ERROR, "Too high symbol frequencies. Tree construction is not possible\n"); - return -1; - } - qsort(s->nodes, 256, sizeof(Node), huff_cmp); - cur_node = 256; - // FIXME how it will handle nodes with zero count? - for(i = 0; i < 511; i += 2){ - s->nodes[cur_node].sym = HNODE; - s->nodes[cur_node].count = s->nodes[i].count + s->nodes[i+1].count; - s->nodes[cur_node].n0 = i; - for(j = cur_node; j > 0; j--){ - if(s->nodes[j].count >= s->nodes[j - 1].count) break; - FFSWAP(Node, s->nodes[j], s->nodes[j - 1]); - } - cur_node++; - } - if(build_huff_tree(&vlc, s->nodes) < 0){ - av_log(s->avctx, AV_LOG_ERROR, "Error building tree\n"); - return -1; - } + for (i = 0; i < 256; i++) + nodes[i].count = bytestream_get_le32(&src); + size -= 1024; + if ((ret = ff_huff_build_tree(s->avctx, &vlc, 256, VLC_BITS, + nodes, huff_cmp, + FF_HUFFMAN_FLAG_ZERO_COUNT)) < 0) + return ret; /* 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(s->tmpbuf, src, size >> 2); + s->bdsp.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; i++){ - dst[i] = get_vlc2(&gb, vlc.table, 9, 3); + for (j = 0; j < h; j++) { + for (i = 0; i < w*step; i += step) { + dst[i] = get_vlc2(&gb, vlc.table, VLC_BITS, 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 (j) + dst[i] += dst[i - stride]; + else if (Uoff) + dst[i] += 0x80; + if (get_bits_left(&gb) < 0) { + ff_free_vlc(&vlc); + return AVERROR_INVALIDDATA; + } } dst += stride; } - free_vlc(&vlc); + ff_free_vlc(&vlc); return 0; } -/** - * 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 - */ static int decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) + void *data, int *got_frame, + AVPacket *avpkt) { FrapsContext * const s = avctx->priv_data; - AVFrame *frame = data; - AVFrame * const f = (AVFrame*)&s->frame; + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + AVFrame *frame = data; + AVFrame * const f = 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, is_chroma, planes; + int i, j, ret, is_chroma, planes; + enum AVPixelFormat pix_fmt; + int prev_pic_bit, expected_size; + if (buf_size < 4) { + av_log(avctx, AV_LOG_ERROR, "Packet is too short\n"); + return AVERROR_INVALIDDATA; + } - header = LE_32(buf); - version = header & 0xff; + header = AV_RL32(buf); + version = header & 0xff; header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */ + prev_pic_bit = header & (1U << 31); /* bit 31 means same as previous pic */ - if (version > 2 && version != 4) { + if (version > 5) { av_log(avctx, AV_LOG_ERROR, "This file is encoded with Fraps version %d. " \ - "This codec can only decode version 0, 1, 2 and 4.\n", version); - return -1; + "This codec can only decode versions <= 5.\n", version); + return AVERROR_PATCHWELCOME; } - buf+=4; + buf += 4; if (header_size == 8) - buf+=4; + buf += 4; - switch(version) { + pix_fmt = version & 1 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P; + if (avctx->pix_fmt != pix_fmt && f->data[0]) { + av_frame_unref(f); + } + avctx->pix_fmt = pix_fmt; + avctx->color_range = version & 1 ? AVCOL_RANGE_UNSPECIFIED + : AVCOL_RANGE_JPEG; + + expected_size = header_size; + + switch (version) { case 0: default: /* Fraps v0 is a reordered YUV420 */ - avctx->pix_fmt = PIX_FMT_YUV420P; - - if ( (buf_size != avctx->width*avctx->height*3/2+header_size) && - (buf_size != header_size) ) { + if (!prev_pic_bit) + expected_size += avctx->width * avctx->height * 3 / 2; + if (buf_size != expected_size) { av_log(avctx, AV_LOG_ERROR, "Invalid frame length %d (should be %d)\n", - buf_size, avctx->width*avctx->height*3/2+header_size); - return -1; + buf_size, expected_size); + return AVERROR_INVALIDDATA; } - if (( (avctx->width % 8) != 0) || ( (avctx->height % 2) != 0 )) { + if (((avctx->width % 8) != 0) || ((avctx->height % 2) != 0)) { av_log(avctx, AV_LOG_ERROR, "Invalid frame size %dx%d\n", avctx->width, avctx->height); - return -1; + return AVERROR_INVALIDDATA; } - f->reference = 1; - f->buffer_hints = FF_BUFFER_HINTS_VALID | - FF_BUFFER_HINTS_PRESERVE | - FF_BUFFER_HINTS_REUSABLE; - if (avctx->reget_buffer(avctx, f)) { + if ((ret = ff_reget_buffer(avctx, f)) < 0) { av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); - return -1; + return ret; } - /* 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; - - if (f->pict_type == FF_I_TYPE) { - buf32=(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] ]; - cr=(uint32_t*)&f->data[1][ y*f->linesize[1] ]; - cb=(uint32_t*)&f->data[2][ y*f->linesize[2] ]; - for(x=0; xwidth; x+=8){ + f->pict_type = prev_pic_bit ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I; + f->key_frame = f->pict_type == AV_PICTURE_TYPE_I; + + if (f->pict_type == AV_PICTURE_TYPE_I) { + buf32 = (const uint32_t*)buf; + for (y = 0; y < avctx->height / 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]]; + cr = (uint32_t*)&f->data[1][ y * f->linesize[1]]; + cb = (uint32_t*)&f->data[2][ y * f->linesize[2]]; + for (x = 0; x < avctx->width; x += 8) { *(luma1++) = *(buf32++); *(luma1++) = *(buf32++); *(luma2++) = *(buf32++); @@ -276,33 +230,27 @@ static int decode_frame(AVCodecContext *avctx, case 1: /* Fraps v1 is an upside-down BGR24 */ - avctx->pix_fmt = PIX_FMT_BGR24; - - if ( (buf_size != avctx->width*avctx->height*3+header_size) && - (buf_size != header_size) ) { + if (!prev_pic_bit) + expected_size += avctx->width * avctx->height * 3; + if (buf_size != expected_size) { 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; + buf_size, expected_size); + return AVERROR_INVALIDDATA; } - f->reference = 1; - f->buffer_hints = FF_BUFFER_HINTS_VALID | - FF_BUFFER_HINTS_PRESERVE | - FF_BUFFER_HINTS_REUSABLE; - if (avctx->reget_buffer(avctx, f)) { + if ((ret = ff_reget_buffer(avctx, f)) < 0) { av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); - return -1; + return ret; } - /* 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; - - if (f->pict_type == FF_I_TYPE) { - for(y=0; yheight; y++) - memcpy(&f->data[0][ (avctx->height-y)*f->linesize[0] ], - &buf[y*avctx->width*3], - f->linesize[0]); + f->pict_type = prev_pic_bit ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I; + f->key_frame = f->pict_type == AV_PICTURE_TYPE_I; + + if (f->pict_type == AV_PICTURE_TYPE_I) { + for (y = 0; yheight; y++) + memcpy(&f->data[0][(avctx->height - y - 1) * f->linesize[0]], + &buf[y * avctx->width * 3], + 3 * avctx->width); } break; @@ -310,52 +258,102 @@ static int decode_frame(AVCodecContext *avctx, case 4: /** * Fraps v2 is Huffman-coded YUV420 planes - * Fraps v4 is the same except it works in grayscale + * Fraps v4 is virtually the same */ - avctx->pix_fmt = (version == 2) ? PIX_FMT_YUV420P : PIX_FMT_GRAY8; - planes = (version == 2) ? 3 : 1; - f->reference = 1; - f->buffer_hints = FF_BUFFER_HINTS_VALID | - FF_BUFFER_HINTS_PRESERVE | - FF_BUFFER_HINTS_REUSABLE; - if (avctx->reget_buffer(avctx, f)) { + planes = 3; + if ((ret = ff_reget_buffer(avctx, f)) < 0) { av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); - return -1; + return ret; } /* skip frame */ - if(buf_size == 8) { - f->pict_type = FF_P_TYPE; + if (buf_size == 8) { + f->pict_type = AV_PICTURE_TYPE_P; f->key_frame = 0; break; } - f->pict_type = FF_I_TYPE; + f->pict_type = AV_PICTURE_TYPE_I; f->key_frame = 1; - if ((LE_32(buf) != FPS_TAG)||(buf_size < (planes*1024 + 24))) { + 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; + return AVERROR_INVALIDDATA; } - for(i = 0; i < planes; i++) { - offs[i] = LE_32(buf + 4 + i * 4); - if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) { + 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; + return AVERROR_INVALIDDATA; } } offs[planes] = buf_size; - for(i = 0; i < planes; i++){ + for (i = 0; i < planes; i++) { is_chroma = !!i; - s->tmpbuf = av_realloc(s->tmpbuf, offs[i + 1] - offs[i] - 1024); - 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) < 0) { + av_fast_padded_malloc(&s->tmpbuf, &s->tmpbuf_size, + offs[i + 1] - offs[i] - 1024); + if (!s->tmpbuf) + return AVERROR(ENOMEM); + if ((ret = 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; + return ret; + } + } + break; + case 3: + case 5: + /* Virtually the same as version 4, but is for RGB24 */ + planes = 3; + if ((ret = ff_reget_buffer(avctx, f)) < 0) { + av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return ret; + } + /* 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 AVERROR_INVALIDDATA; + } + 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 AVERROR_INVALIDDATA; + } + } + 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 ((ret = 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 ret; + } + } + // 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; } - *frame = *f; - *data_size = sizeof(AVFrame); + if ((ret = av_frame_ref(frame, f)) < 0) + return ret; + *got_frame = 1; return buf_size; } @@ -366,26 +364,25 @@ 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_frame_free(&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", + .long_name = NULL_IF_CONFIG_SMALL("Fraps"), + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_FRAPS, + .priv_data_size = sizeof(FrapsContext), + .init = decode_init, + .close = decode_end, + .decode = decode_frame, + .capabilities = AV_CODEC_CAP_DR1, };