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Diffstat (limited to 'ffmpeg1/libavcodec/asvdec.c')
-rw-r--r--ffmpeg1/libavcodec/asvdec.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/ffmpeg1/libavcodec/asvdec.c b/ffmpeg1/libavcodec/asvdec.c
deleted file mode 100644
index 7dca22b..0000000
--- a/ffmpeg1/libavcodec/asvdec.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/*
- * Copyright (c) 2003 Michael Niedermayer
- *
- * 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
- * ASUS V1/V2 decoder.
- */
-
-#include "libavutil/attributes.h"
-#include "libavutil/mem.h"
-
-#include "asv.h"
-#include "avcodec.h"
-#include "put_bits.h"
-#include "internal.h"
-#include "mathops.h"
-#include "mpeg12data.h"
-
-#define VLC_BITS 6
-#define ASV2_LEVEL_VLC_BITS 10
-
-static VLC ccp_vlc;
-static VLC level_vlc;
-static VLC dc_ccp_vlc;
-static VLC ac_ccp_vlc;
-static VLC asv2_level_vlc;
-
-static av_cold void init_vlcs(ASV1Context *a)
-{
- static int done = 0;
-
- if (!done) {
- done = 1;
-
- INIT_VLC_STATIC(&ccp_vlc, VLC_BITS, 17,
- &ff_asv_ccp_tab[0][1], 2, 1,
- &ff_asv_ccp_tab[0][0], 2, 1, 64);
- INIT_VLC_STATIC(&dc_ccp_vlc, VLC_BITS, 8,
- &ff_asv_dc_ccp_tab[0][1], 2, 1,
- &ff_asv_dc_ccp_tab[0][0], 2, 1, 64);
- INIT_VLC_STATIC(&ac_ccp_vlc, VLC_BITS, 16,
- &ff_asv_ac_ccp_tab[0][1], 2, 1,
- &ff_asv_ac_ccp_tab[0][0], 2, 1, 64);
- INIT_VLC_STATIC(&level_vlc, VLC_BITS, 7,
- &ff_asv_level_tab[0][1], 2, 1,
- &ff_asv_level_tab[0][0], 2, 1, 64);
- INIT_VLC_STATIC(&asv2_level_vlc, ASV2_LEVEL_VLC_BITS, 63,
- &ff_asv2_level_tab[0][1], 2, 1,
- &ff_asv2_level_tab[0][0], 2, 1, 1024);
- }
-}
-
-//FIXME write a reversed bitstream reader to avoid the double reverse
-static inline int asv2_get_bits(GetBitContext *gb, int n)
-{
- return ff_reverse[get_bits(gb, n) << (8-n)];
-}
-
-static inline int asv1_get_level(GetBitContext *gb)
-{
- int code = get_vlc2(gb, level_vlc.table, VLC_BITS, 1);
-
- if (code == 3)
- return get_sbits(gb, 8);
- else
- return code - 3;
-}
-
-static inline int asv2_get_level(GetBitContext *gb)
-{
- int code = get_vlc2(gb, asv2_level_vlc.table, ASV2_LEVEL_VLC_BITS, 1);
-
- if (code == 31)
- return (int8_t)asv2_get_bits(gb, 8);
- else
- return code - 31;
-}
-
-static inline int asv1_decode_block(ASV1Context *a, int16_t block[64])
-{
- int i;
-
- block[0] = 8 * get_bits(&a->gb, 8);
-
- for (i = 0; i < 11; i++) {
- const int ccp = get_vlc2(&a->gb, ccp_vlc.table, VLC_BITS, 1);
-
- if (ccp) {
- if (ccp == 16)
- break;
- if (ccp < 0 || i >= 10) {
- av_log(a->avctx, AV_LOG_ERROR, "coded coeff pattern damaged\n");
- return AVERROR_INVALIDDATA;
- }
-
- if (ccp & 8)
- block[a->scantable.permutated[4 * i + 0]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 0]) >> 4;
- if (ccp & 4)
- block[a->scantable.permutated[4 * i + 1]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 1]) >> 4;
- if (ccp & 2)
- block[a->scantable.permutated[4 * i + 2]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 2]) >> 4;
- if (ccp & 1)
- block[a->scantable.permutated[4 * i + 3]] = (asv1_get_level(&a->gb) * a->intra_matrix[4 * i + 3]) >> 4;
- }
- }
-
- return 0;
-}
-
-static inline int asv2_decode_block(ASV1Context *a, int16_t block[64])
-{
- int i, count, ccp;
-
- count = asv2_get_bits(&a->gb, 4);
-
- block[0] = 8 * asv2_get_bits(&a->gb, 8);
-
- ccp = get_vlc2(&a->gb, dc_ccp_vlc.table, VLC_BITS, 1);
- if (ccp) {
- if (ccp & 4)
- block[a->scantable.permutated[1]] = (asv2_get_level(&a->gb) * a->intra_matrix[1]) >> 4;
- if (ccp & 2)
- block[a->scantable.permutated[2]] = (asv2_get_level(&a->gb) * a->intra_matrix[2]) >> 4;
- if (ccp & 1)
- block[a->scantable.permutated[3]] = (asv2_get_level(&a->gb) * a->intra_matrix[3]) >> 4;
- }
-
- for (i = 1; i < count + 1; i++) {
- const int ccp = get_vlc2(&a->gb, ac_ccp_vlc.table, VLC_BITS, 1);
-
- if (ccp) {
- if (ccp & 8)
- block[a->scantable.permutated[4*i + 0]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 0]) >> 4;
- if (ccp & 4)
- block[a->scantable.permutated[4*i + 1]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 1]) >> 4;
- if (ccp & 2)
- block[a->scantable.permutated[4*i + 2]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 2]) >> 4;
- if (ccp & 1)
- block[a->scantable.permutated[4*i + 3]] = (asv2_get_level(&a->gb) * a->intra_matrix[4*i + 3]) >> 4;
- }
- }
-
- return 0;
-}
-
-static inline int decode_mb(ASV1Context *a, int16_t block[6][64])
-{
- int i;
-
- a->dsp.clear_blocks(block[0]);
-
- if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
- for (i = 0; i < 6; i++) {
- if (asv1_decode_block(a, block[i]) < 0)
- return -1;
- }
- } else {
- for (i = 0; i < 6; i++) {
- if (asv2_decode_block(a, block[i]) < 0)
- return -1;
- }
- }
- return 0;
-}
-
-static inline void idct_put(ASV1Context *a, AVFrame *frame, int mb_x, int mb_y)
-{
- int16_t (*block)[64] = a->block;
- int linesize = frame->linesize[0];
-
- uint8_t *dest_y = frame->data[0] + (mb_y * 16* linesize ) + mb_x * 16;
- uint8_t *dest_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
- uint8_t *dest_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
-
- a->dsp.idct_put(dest_y , linesize, block[0]);
- a->dsp.idct_put(dest_y + 8, linesize, block[1]);
- a->dsp.idct_put(dest_y + 8*linesize , linesize, block[2]);
- a->dsp.idct_put(dest_y + 8*linesize + 8, linesize, block[3]);
-
- if (!(a->avctx->flags&CODEC_FLAG_GRAY)) {
- a->dsp.idct_put(dest_cb, frame->linesize[1], block[4]);
- a->dsp.idct_put(dest_cr, frame->linesize[2], block[5]);
- }
-}
-
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *got_frame,
- AVPacket *avpkt)
-{
- ASV1Context * const a = avctx->priv_data;
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
- AVFrame * const p = data;
- int mb_x, mb_y, ret;
-
- if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
- return ret;
- p->pict_type = AV_PICTURE_TYPE_I;
- p->key_frame = 1;
-
- av_fast_padded_malloc(&a->bitstream_buffer, &a->bitstream_buffer_size,
- buf_size);
- if (!a->bitstream_buffer)
- return AVERROR(ENOMEM);
-
- if (avctx->codec_id == AV_CODEC_ID_ASV1)
- a->dsp.bswap_buf((uint32_t*)a->bitstream_buffer, (const uint32_t*)buf, buf_size/4);
- else {
- int i;
- for (i = 0; i < buf_size; i++)
- a->bitstream_buffer[i] = ff_reverse[buf[i]];
- }
-
- init_get_bits(&a->gb, a->bitstream_buffer, buf_size*8);
-
- for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
- for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
- if ((ret = decode_mb(a, a->block)) < 0)
- return ret;
-
- idct_put(a, p, mb_x, mb_y);
- }
- }
-
- if (a->mb_width2 != a->mb_width) {
- mb_x = a->mb_width2;
- for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
- if ((ret = decode_mb(a, a->block)) < 0)
- return ret;
-
- idct_put(a, p, mb_x, mb_y);
- }
- }
-
- if (a->mb_height2 != a->mb_height) {
- mb_y = a->mb_height2;
- for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
- if ((ret = decode_mb(a, a->block)) < 0)
- return ret;
-
- idct_put(a, p, mb_x, mb_y);
- }
- }
-
- *got_frame = 1;
-
- emms_c();
-
- return (get_bits_count(&a->gb) + 31) / 32 * 4;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- ASV1Context * const a = avctx->priv_data;
- const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
- int i;
-
- ff_asv_common_init(avctx);
- init_vlcs(a);
- ff_init_scantable(a->dsp.idct_permutation, &a->scantable, ff_asv_scantab);
- avctx->pix_fmt = AV_PIX_FMT_YUV420P;
-
- if (avctx->extradata_size < 1 || (a->inv_qscale = avctx->extradata[0]) == 0) {
- av_log(avctx, AV_LOG_ERROR, "illegal qscale 0\n");
- if (avctx->codec_id == AV_CODEC_ID_ASV1)
- a->inv_qscale = 6;
- else
- a->inv_qscale = 10;
- }
-
- for (i = 0; i < 64; i++) {
- int index = ff_asv_scantab[i];
-
- a->intra_matrix[i] = 64 * scale * ff_mpeg1_default_intra_matrix[index] / a->inv_qscale;
- }
-
- return 0;
-}
-
-static av_cold int decode_end(AVCodecContext *avctx)
-{
- ASV1Context * const a = avctx->priv_data;
-
- av_freep(&a->bitstream_buffer);
- a->bitstream_buffer_size = 0;
-
- return 0;
-}
-
-#if CONFIG_ASV1_DECODER
-AVCodec ff_asv1_decoder = {
- .name = "asv1",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_ASV1,
- .priv_data_size = sizeof(ASV1Context),
- .init = decode_init,
- .close = decode_end,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
-};
-#endif
-
-#if CONFIG_ASV2_DECODER
-AVCodec ff_asv2_decoder = {
- .name = "asv2",
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_ASV2,
- .priv_data_size = sizeof(ASV1Context),
- .init = decode_init,
- .close = decode_end,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
-};
-#endif
-
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