diff options
Diffstat (limited to 'ffmpeg1/libavcodec/eatqi.c')
| -rw-r--r-- | ffmpeg1/libavcodec/eatqi.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/ffmpeg1/libavcodec/eatqi.c b/ffmpeg1/libavcodec/eatqi.c deleted file mode 100644 index 1484ddc..0000000 --- a/ffmpeg1/libavcodec/eatqi.c +++ /dev/null @@ -1,158 +0,0 @@ -/* - * Electronic Arts TQI Video Decoder - * Copyright (c) 2007-2009 Peter Ross <pross@xvid.org> - * - * 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 St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Electronic Arts TQI Video Decoder - * @author Peter Ross <pross@xvid.org> - * @see http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TQI - */ - -#include "avcodec.h" -#include "get_bits.h" -#include "aandcttab.h" -#include "eaidct.h" -#include "internal.h" -#include "mpeg12.h" -#include "mpegvideo.h" - -typedef struct TqiContext { - MpegEncContext s; - void *bitstream_buf; - unsigned int bitstream_buf_size; - DECLARE_ALIGNED(16, int16_t, block)[6][64]; -} TqiContext; - -static av_cold int tqi_decode_init(AVCodecContext *avctx) -{ - TqiContext *t = avctx->priv_data; - MpegEncContext *s = &t->s; - s->avctx = avctx; - ff_dsputil_init(&s->dsp, avctx); - ff_init_scantable_permutation(s->dsp.idct_permutation, FF_NO_IDCT_PERM); - ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); - s->qscale = 1; - avctx->time_base = (AVRational){1, 15}; - avctx->pix_fmt = AV_PIX_FMT_YUV420P; - ff_mpeg12_init_vlcs(); - return 0; -} - -static int tqi_decode_mb(MpegEncContext *s, int16_t (*block)[64]) -{ - int n; - s->dsp.clear_blocks(block[0]); - for (n=0; n<6; n++) - if (ff_mpeg1_decode_block_intra(s, block[n], n) < 0) - return -1; - - return 0; -} - -static inline void tqi_idct_put(TqiContext *t, AVFrame *frame, int16_t (*block)[64]) -{ - MpegEncContext *s = &t->s; - int linesize = frame->linesize[0]; - uint8_t *dest_y = frame->data[0] + (s->mb_y * 16* linesize ) + s->mb_x * 16; - uint8_t *dest_cb = frame->data[1] + (s->mb_y * 8 * frame->linesize[1]) + s->mb_x * 8; - uint8_t *dest_cr = frame->data[2] + (s->mb_y * 8 * frame->linesize[2]) + s->mb_x * 8; - - ff_ea_idct_put_c(dest_y , linesize, block[0]); - ff_ea_idct_put_c(dest_y + 8, linesize, block[1]); - ff_ea_idct_put_c(dest_y + 8*linesize , linesize, block[2]); - ff_ea_idct_put_c(dest_y + 8*linesize + 8, linesize, block[3]); - if(!(s->avctx->flags&CODEC_FLAG_GRAY)) { - ff_ea_idct_put_c(dest_cb, frame->linesize[1], block[4]); - ff_ea_idct_put_c(dest_cr, frame->linesize[2], block[5]); - } -} - -static void tqi_calculate_qtable(MpegEncContext *s, int quant) -{ - const int qscale = (215 - 2*quant)*5; - int i; - s->intra_matrix[0] = (ff_inv_aanscales[0]*ff_mpeg1_default_intra_matrix[0])>>11; - for(i=1; i<64; i++) - s->intra_matrix[i] = (ff_inv_aanscales[i]*ff_mpeg1_default_intra_matrix[i]*qscale + 32)>>14; -} - -static int tqi_decode_frame(AVCodecContext *avctx, - void *data, int *got_frame, - AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - const uint8_t *buf_end = buf+buf_size; - TqiContext *t = avctx->priv_data; - MpegEncContext *s = &t->s; - AVFrame *frame = data; - int ret; - - s->width = AV_RL16(&buf[0]); - s->height = AV_RL16(&buf[2]); - tqi_calculate_qtable(s, buf[4]); - buf += 8; - - if (s->avctx->width!=s->width || s->avctx->height!=s->height) - avcodec_set_dimensions(s->avctx, s->width, s->height); - - if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) - return ret; - - av_fast_padded_malloc(&t->bitstream_buf, &t->bitstream_buf_size, - buf_end - buf); - if (!t->bitstream_buf) - return AVERROR(ENOMEM); - s->dsp.bswap_buf(t->bitstream_buf, (const uint32_t*)buf, (buf_end-buf)/4); - init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf)); - - s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 0; - for (s->mb_y=0; s->mb_y<(avctx->height+15)/16; s->mb_y++) - for (s->mb_x=0; s->mb_x<(avctx->width+15)/16; s->mb_x++) - { - if (tqi_decode_mb(s, t->block) < 0) - goto end; - tqi_idct_put(t, frame, t->block); - } - end: - - *got_frame = 1; - return buf_size; -} - -static av_cold int tqi_decode_end(AVCodecContext *avctx) -{ - TqiContext *t = avctx->priv_data; - av_free(t->bitstream_buf); - return 0; -} - -AVCodec ff_eatqi_decoder = { - .name = "eatqi", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_TQI, - .priv_data_size = sizeof(TqiContext), - .init = tqi_decode_init, - .close = tqi_decode_end, - .decode = tqi_decode_frame, - .capabilities = CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TQI Video"), -}; |