diff options
| author | Tim Redfern <tim@eclectronics.org> | 2013-09-05 17:55:35 +0100 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2013-09-05 17:55:35 +0100 |
| commit | 741fb4b9e135cfb161a749db88713229038577bb (patch) | |
| tree | 08bc9925659cbcac45162bacf31dc6336d4f60b4 /ffmpeg1/libavcodec/fraps.c | |
| parent | a2e1bf3495b7bfefdaedb8fc737e969ab06df079 (diff) | |
making act segmenter
Diffstat (limited to 'ffmpeg1/libavcodec/fraps.c')
| -rw-r--r-- | ffmpeg1/libavcodec/fraps.c | 315 |
1 files changed, 0 insertions, 315 deletions
diff --git a/ffmpeg1/libavcodec/fraps.c b/ffmpeg1/libavcodec/fraps.c deleted file mode 100644 index 00a38c6..0000000 --- a/ffmpeg1/libavcodec/fraps.c +++ /dev/null @@ -1,315 +0,0 @@ -/* - * Fraps FPS1 decoder - * Copyright (c) 2005 Roine Gustafsson - * Copyright (c) 2006 Konstantin Shishkov - * - * 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 - */ - -/** - * @file - * Lossless Fraps 'FPS1' decoder - * @author Roine Gustafsson (roine at users sf net) - * @author Konstantin Shishkov - * - * Codec algorithm for version 0 is taken from Transcode <www.transcoding.org> - * - * Version 2 files support by Konstantin Shishkov - */ - -#include "avcodec.h" -#include "get_bits.h" -#include "huffman.h" -#include "bytestream.h" -#include "dsputil.h" -#include "internal.h" -#include "thread.h" - -#define FPS_TAG MKTAG('F', 'P', 'S', 'x') - -/** - * local variable storage - */ -typedef struct FrapsContext { - AVCodecContext *avctx; - uint8_t *tmpbuf; - int tmpbuf_size; - DSPContext dsp; -} FrapsContext; - - -/** - * initializes decoder - * @param avctx codec context - * @return 0 on success or negative if fails - */ -static av_cold int decode_init(AVCodecContext *avctx) -{ - FrapsContext * const s = avctx->priv_data; - - s->avctx = avctx; - s->tmpbuf = NULL; - - ff_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 Fraps v2 packed plane - */ -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, ret; - GetBitContext gb; - VLC vlc; - Node nodes[512]; - - 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, 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((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) { - ff_free_vlc(&vlc); - return AVERROR_INVALIDDATA; - } - } - dst += stride; - } - ff_free_vlc(&vlc); - return 0; -} - -static int decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - FrapsContext * const s = avctx->priv_data; - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - ThreadFrame frame = { .f = data }; - AVFrame * const f = data; - uint32_t header; - unsigned int version,header_size; - unsigned int x, y; - const uint32_t *buf32; - uint32_t *luma1,*luma2,*cb,*cr; - uint32_t offs[4]; - int i, j, ret, is_chroma; - const int planes = 3; - uint8_t *out; - - header = AV_RL32(buf); - version = header & 0xff; - header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */ - - if (version > 5) { - av_log(avctx, AV_LOG_ERROR, - "This file is encoded with Fraps version %d. " \ - "This codec can only decode versions <= 5.\n", version); - return AVERROR_PATCHWELCOME; - } - - buf += header_size; - - if (version < 2) { - unsigned needed_size = avctx->width * avctx->height * 3; - if (version == 0) needed_size /= 2; - needed_size += header_size; - /* bit 31 means same as previous pic */ - if (header & (1U<<31)) { - *got_frame = 0; - return buf_size; - } - if (buf_size != needed_size) { - av_log(avctx, AV_LOG_ERROR, - "Invalid frame length %d (should be %d)\n", - buf_size, needed_size); - return AVERROR_INVALIDDATA; - } - } else { - /* skip frame */ - if (buf_size == 8) { - *got_frame = 0; - return buf_size; - } - 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 - header_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 - header_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); - } - } - - f->pict_type = AV_PICTURE_TYPE_I; - f->key_frame = 1; - - avctx->pix_fmt = version & 1 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_YUVJ420P; - - if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) - return ret; - - switch (version) { - case 0: - default: - /* Fraps v0 is a reordered YUV420 */ - 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 AVERROR_INVALIDDATA; - } - - 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++; - *luma2++ = *buf32++; - *cr++ = *buf32++; - *cb++ = *buf32++; - } - } - break; - - case 1: - /* Fraps v1 is an upside-down BGR24 */ - for (y = 0; y<avctx->height; y++) - memcpy(&f->data[0][(avctx->height - y - 1) * f->linesize[0]], - &buf[y * avctx->width * 3], - 3 * avctx->width); - break; - - case 2: - case 4: - /** - * Fraps v2 is Huffman-coded YUV420 planes - * Fraps v4 is virtually the same - */ - for (i = 0; i < planes; i++) { - is_chroma = !!i; - 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 ret; - } - } - break; - case 3: - case 5: - /* Virtually the same as version 4, but is for RGB24 */ - for (i = 0; i < planes; i++) { - 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; - } - } - out = f->data[0]; - // convert pseudo-YUV into real RGB - for (j = 0; j < avctx->height; j++) { - uint8_t *line_end = out + 3*avctx->width; - while (out < line_end) { - out[0] += out[1]; - out[2] += out[1]; - out += 3; - } - out += f->linesize[0] - 3*avctx->width; - } - break; - } - - *got_frame = 1; - - return buf_size; -} - - -/** - * closes decoder - * @param avctx codec context - * @return 0 on success or negative if fails - */ -static av_cold int decode_end(AVCodecContext *avctx) -{ - FrapsContext *s = (FrapsContext*)avctx->priv_data; - - av_freep(&s->tmpbuf); - return 0; -} - - -AVCodec ff_fraps_decoder = { - .name = "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 = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS, - .long_name = NULL_IF_CONFIG_SMALL("Fraps"), -}; |
