diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/dnxhddec.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/dnxhddec.c | 368 |
1 files changed, 0 insertions, 368 deletions
diff --git a/contrib/ffmpeg/libavcodec/dnxhddec.c b/contrib/ffmpeg/libavcodec/dnxhddec.c deleted file mode 100644 index 224439c47..000000000 --- a/contrib/ffmpeg/libavcodec/dnxhddec.c +++ /dev/null @@ -1,368 +0,0 @@ -/* - * VC3/DNxHD decoder. - * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>. - * - * 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 - */ - -//#define TRACE -//#define DEBUG - -#include "avcodec.h" -#include "bitstream.h" -#include "dnxhddata.h" -#include "dsputil.h" -#include "mpegvideo.h" - -typedef struct { - int cid; - unsigned int width, height; - int interlaced; - unsigned int frame_size; - int index_bits; - int bit_depth; - const uint8_t *luma_weigth, *chroma_weigth; - const uint8_t *dc_codes, *dc_bits; - const uint16_t *ac_codes; - const uint8_t *ac_bits, *ac_level; - const uint8_t *ac_run_flag, *ac_index_flag; - const uint16_t *run_codes; - const uint8_t *run_bits, *run; -} CIDEntry; - -typedef struct { - AVCodecContext *avctx; - AVFrame picture; - GetBitContext gb; - int cid; ///< compression id - unsigned int width, height; - unsigned int mb_width, mb_height; - uint32_t mb_scan_index[68]; /* max for 1080p */ - int cur_field; ///< current interlaced field - int index_bits; ///< length of index value - VLC ac_vlc, dc_vlc, run_vlc; - const uint8_t *ac_level, *run; - const uint8_t *ac_run_flag, *ac_index_flag; - const uint8_t *luma_weigth, *chroma_weigth; - int last_dc[3]; - DSPContext dsp; - DECLARE_ALIGNED_16(DCTELEM, blocks[8][64]); - DECLARE_ALIGNED_8(ScanTable, scantable); - const CIDEntry *cid_table; -} DNXHDContext; - -static const CIDEntry cid_table[] = { - { 1238, 1920, 1080, 0, 917504, 4, 8, - dnxhd_1238_luma_weigth, dnxhd_1238_chroma_weigth, - dnxhd_1238_dc_codes, dnxhd_1238_dc_bits, - dnxhd_1238_ac_codes, dnxhd_1238_ac_bits, dnxhd_1238_ac_level, - dnxhd_1238_ac_run_flag, dnxhd_1238_ac_index_flag, - dnxhd_1238_run_codes, dnxhd_1238_run_bits, dnxhd_1238_run }, -/* { 1243, 1920, 1080, 1, 917504, 4, 8, */ -/* dnxhd_1243_luma_weigth, dnxhd_1243_chroma_weigth, */ -/* dnxhd_1238_dc_codes, dnxhd_1238_dc_bits, */ -/* dnxhd_1238_ac_codes, dnxhd_1238_ac_bits, dnxhd_1238_ac_level, */ -/* dnxhd_1238_ac_run_flag, dnxhd_1238_ac_index_flag, */ -/* dnxhd_1238_run_codes, dnxhd_1238_run_bits, dnxhd_1238_run }, */ -}; - -static int dnxhd_get_cid_table(int cid) -{ - int i; - for (i = 0; i < sizeof(cid_table)/sizeof(CIDEntry); i++) - if (cid_table[i].cid == cid) - return i; - return -1; -} - -#define DNXHD_VLC_BITS 9 -#define DNXHD_DC_VLC_BITS 6 - -static int dnxhd_decode_init(AVCodecContext *avctx) -{ - DNXHDContext *ctx = avctx->priv_data; - - ctx->avctx = avctx; - dsputil_init(&ctx->dsp, avctx); - avctx->coded_frame = &ctx->picture; - ctx->picture.type = FF_I_TYPE; - return 0; -} - -static int dnxhd_init_vlc(DNXHDContext *ctx, int cid) -{ - if (!ctx->cid_table) { - int index; - - if ((index = dnxhd_get_cid_table(cid)) < 0) { - av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %d\n", cid); - return -1; - } - ctx->cid_table = &cid_table[index]; - init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257, - cid_table->ac_bits, 1, 1, - cid_table->ac_codes, 2, 2, 0); - init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, 12, - cid_table->dc_bits, 1, 1, - cid_table->dc_codes, 1, 1, 0); - init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62, - cid_table->run_bits, 1, 1, - cid_table->run_codes, 2, 2, 0); - - ctx->run = cid_table->run; - ctx->ac_level = cid_table->ac_level; - ctx->ac_run_flag = cid_table->ac_run_flag; - ctx->ac_index_flag = cid_table->ac_index_flag; - ctx->luma_weigth = cid_table->luma_weigth; - ctx->chroma_weigth = cid_table->chroma_weigth; - - ctx->index_bits = cid_table->index_bits; - - ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, ff_zigzag_direct); - } - return 0; -} - -static int dnxhd_decode_header(DNXHDContext *ctx, uint8_t *buf, int buf_size) -{ - static const uint8_t header_prefix[] = { 0x00, 0x00, 0x02, 0x80, 0x01 }; - int i; - - if (buf_size < 0x280) - return -1; - - if (memcmp(buf, header_prefix, 5)) { - av_log(ctx->avctx, AV_LOG_ERROR, "error in header\n"); - return -1; - } - if (buf[5] & 2) {/* interlaced FIXME top or bottom */ - ctx->picture.interlaced_frame = 1; - av_log(ctx->avctx, AV_LOG_DEBUG, "interlaced %d\n", buf[5] & 3); - } - - ctx->height = AV_RB16(buf + 0x18); - ctx->width = AV_RB16(buf + 0x1a); - - dprintf(ctx->avctx, "width %d, heigth %d\n", ctx->width, ctx->height); - - if (buf[0x21] & 0x80) { - av_log(ctx->avctx, AV_LOG_ERROR, "10 bit per component\n"); - return -1; - } - - ctx->cid = AV_RB32(buf + 0x28); - dprintf(ctx->avctx, "compression id %d\n", ctx->cid); - - if (dnxhd_init_vlc(ctx, ctx->cid) < 0) - return -1; - - if (buf_size < ctx->cid_table->frame_size) { - av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size\n"); - return -1; - } - - ctx->mb_width = ctx->width>>4; - ctx->mb_height = buf[0x16d]; - - if (ctx->mb_height > 68) { - av_log(ctx->avctx, AV_LOG_ERROR, "mb height too big\n"); - return -1; - } - - dprintf(ctx->avctx, "mb width %d, mb height %d\n", ctx->mb_width, ctx->mb_height); - for (i = 0; i < ctx->mb_height; i++) { - ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i<<2)); - dprintf(ctx->avctx, "mb scan index %d\n", ctx->mb_scan_index[i]); - if (buf_size < ctx->mb_scan_index[i] + 0x280) { - av_log(ctx->avctx, AV_LOG_ERROR, "invalid mb scan index\n"); - return -1; - } - } - - return 0; -} - -static int dnxhd_decode_dc(DNXHDContext *ctx) -{ - int len; - - len = get_vlc2(&ctx->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1); - return len ? get_xbits(&ctx->gb, len) : 0; -} - -static void dnxhd_decode_dct_block(DNXHDContext *ctx, DCTELEM *block, int n, int qscale) -{ - int i, j, index, index2; - int level, component, sign; - const uint8_t *weigth_matrix; - - if (n&2) { - component = 1 + (n&1); - weigth_matrix = ctx->chroma_weigth; - } else { - component = 0; - weigth_matrix = ctx->luma_weigth; - } - - ctx->last_dc[component] += dnxhd_decode_dc(ctx); - block[0] = ctx->last_dc[component]; - //av_log(ctx->avctx, AV_LOG_DEBUG, "dc %d\n", block[0]); - for (i = 1; ; i++) { - index = get_vlc2(&ctx->gb, ctx->ac_vlc.table, DNXHD_VLC_BITS, 2); - //av_log(ctx->avctx, AV_LOG_DEBUG, "index %d\n", index); - level = ctx->ac_level[index]; - if (!level) { /* EOB */ - //av_log(ctx->avctx, AV_LOG_DEBUG, "EOB\n"); - return; - } - sign = get_sbits(&ctx->gb, 1); - - if (ctx->ac_index_flag[index]) { - level += get_bits(&ctx->gb, ctx->index_bits)<<6; - } - - if (ctx->ac_run_flag[index]) { - index2 = get_vlc2(&ctx->gb, ctx->run_vlc.table, DNXHD_VLC_BITS, 2); - i += ctx->run[index2]; - } - - j = ctx->scantable.permutated[i]; - //av_log(ctx->avctx, AV_LOG_DEBUG, "j %d\n", j); - //av_log(ctx->avctx, AV_LOG_DEBUG, "level %d, weigth %d\n", level, weigth_matrix[i]); - level = (2*level+1) * qscale * weigth_matrix[i]; - if (weigth_matrix[i] != 32) // FIXME 10bit - level += 32; - level >>= 6; - level = (level^sign) - sign; - - if (i > 63) { - av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i); - return; - } - - //av_log(NULL, AV_LOG_DEBUG, "i %d, j %d, end level %d\n", i, j, level); - block[j] = level; - } -} - -static int dnxhd_decode_macroblock(DNXHDContext *ctx, int x, int y) -{ - int dct_linesize_luma = ctx->picture.linesize[0]; - int dct_linesize_chroma = ctx->picture.linesize[1]; - uint8_t *dest_y, *dest_u, *dest_v; - int dct_offset; - int qscale, i; - - ctx->dsp.clear_blocks(ctx->blocks[0]); - ctx->dsp.clear_blocks(ctx->blocks[2]); // FIXME change clear blocks to take block amount - - qscale = get_bits(&ctx->gb, 11); - skip_bits1(&ctx->gb); - //av_log(ctx->avctx, AV_LOG_DEBUG, "qscale %d\n", qscale); - - for (i = 0; i < 8; i++) { - dnxhd_decode_dct_block(ctx, ctx->blocks[i], i, qscale); - } - dest_y = ctx->picture.data[0] + ((y * dct_linesize_luma) << 4) + (x << 4); - dest_u = ctx->picture.data[1] + ((y * dct_linesize_chroma) << 4) + (x << 3); - dest_v = ctx->picture.data[2] + ((y * dct_linesize_chroma) << 4) + (x << 3); - - dct_offset = dct_linesize_luma << 3; - ctx->dsp.idct_put(dest_y, dct_linesize_luma, ctx->blocks[0]); - ctx->dsp.idct_put(dest_y + 8, dct_linesize_luma, ctx->blocks[1]); - ctx->dsp.idct_put(dest_y + dct_offset, dct_linesize_luma, ctx->blocks[4]); - ctx->dsp.idct_put(dest_y + dct_offset + 8, dct_linesize_luma, ctx->blocks[5]); - - if (!(ctx->avctx->flags & CODEC_FLAG_GRAY)) { - dct_offset = dct_linesize_chroma << 3; - ctx->dsp.idct_put(dest_u, dct_linesize_chroma, ctx->blocks[2]); - ctx->dsp.idct_put(dest_v, dct_linesize_chroma, ctx->blocks[3]); - ctx->dsp.idct_put(dest_u + dct_offset, dct_linesize_chroma, ctx->blocks[6]); - ctx->dsp.idct_put(dest_v + dct_offset, dct_linesize_chroma, ctx->blocks[7]); - } - - return 0; -} - -static int dnxhd_decode_macroblocks(DNXHDContext *ctx, uint8_t *buf, int buf_size) -{ - int x, y; - for (y = 0; y < ctx->mb_height; y++) { - memset(ctx->last_dc, 4, sizeof(ctx->last_dc)); // 4 for levels +128 - init_get_bits(&ctx->gb, buf + ctx->mb_scan_index[y], (buf_size - ctx->mb_scan_index[y]) << 3); - for (x = 0; x < ctx->mb_width; x++) { - //START_TIMER; - dnxhd_decode_macroblock(ctx, x, y); - //STOP_TIMER("decode macroblock"); - } - } - return 0; -} - -static int dnxhd_decode_frame(AVCodecContext *avctx, void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - DNXHDContext *ctx = avctx->priv_data; - AVFrame *picture = data; - - dprintf(avctx, "frame size %d\n", buf_size); - - if (dnxhd_decode_header(ctx, buf, buf_size) < 0) - return -1; - - avctx->pix_fmt = PIX_FMT_YUV422P; - if (avcodec_check_dimensions(avctx, ctx->width, ctx->height)) - return -1; - avcodec_set_dimensions(avctx, ctx->width, ctx->height); - - if (ctx->picture.data[0]) - avctx->release_buffer(avctx, &ctx->picture); - if (avctx->get_buffer(avctx, &ctx->picture) < 0) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - - dnxhd_decode_macroblocks(ctx, buf + 0x280, buf_size - 0x280); - - *picture = ctx->picture; - *data_size = sizeof(AVPicture); - return buf_size; -} - -static int dnxhd_decode_close(AVCodecContext *avctx) -{ - DNXHDContext *ctx = avctx->priv_data; - - if(ctx->picture.data[0]) - avctx->release_buffer(avctx, &ctx->picture); - free_vlc(&ctx->ac_vlc); - free_vlc(&ctx->dc_vlc); - free_vlc(&ctx->run_vlc); - return 0; -} - -AVCodec dnxhd_decoder = { - "dnxhd", - CODEC_TYPE_VIDEO, - CODEC_ID_DNXHD, - sizeof(DNXHDContext), - dnxhd_decode_init, - NULL, - dnxhd_decode_close, - dnxhd_decode_frame, - CODEC_CAP_DR1, -}; |