diff options
| -rw-r--r-- | libavcodec/Makefile | 2 | ||||
| -rw-r--r-- | libavcodec/proresdata.c | 72 | ||||
| -rw-r--r-- | libavcodec/proresdata.h | 39 | ||||
| -rw-r--r-- | libavcodec/proresdec.c | 69 |
4 files changed, 120 insertions, 62 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 2eaef6b651..6d4ad95090 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -301,7 +301,7 @@ OBJS-$(CONFIG_PNG_DECODER) += png.o pngdec.o pngdsp.o OBJS-$(CONFIG_PNG_ENCODER) += png.o pngenc.o OBJS-$(CONFIG_PPM_DECODER) += pnmdec.o pnm.o OBJS-$(CONFIG_PPM_ENCODER) += pnmenc.o pnm.o -OBJS-$(CONFIG_PRORES_DECODER) += proresdec.o proresdsp.o +OBJS-$(CONFIG_PRORES_DECODER) += proresdec.o proresdata.o proresdsp.o OBJS-$(CONFIG_PTX_DECODER) += ptx.o OBJS-$(CONFIG_QCELP_DECODER) += qcelpdec.o celp_math.o \ celp_filters.o acelp_vectors.o \ diff --git a/libavcodec/proresdata.c b/libavcodec/proresdata.c new file mode 100644 index 0000000000..fcaf32a1af --- /dev/null +++ b/libavcodec/proresdata.c @@ -0,0 +1,72 @@ +/* + * Apple ProRes compatible decoder + * + * Copyright (c) 2010-2011 Maxim Poliakovski + * + * This file is part of Libav. + * + * 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. + * + * 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "proresdata.h" + +const uint8_t ff_prores_progressive_scan[64] = { + 0, 1, 8, 9, 2, 3, 10, 11, + 16, 17, 24, 25, 18, 19, 26, 27, + 4, 5, 12, 20, 13, 6, 7, 14, + 21, 28, 29, 22, 15, 23, 30, 31, + 32, 33, 40, 48, 41, 34, 35, 42, + 49, 56, 57, 50, 43, 36, 37, 44, + 51, 58, 59, 52, 45, 38, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63 +}; + +const uint8_t ff_prores_interlaced_scan[64] = { + 0, 8, 1, 9, 16, 24, 17, 25, + 2, 10, 3, 11, 18, 26, 19, 27, + 32, 40, 33, 34, 41, 48, 56, 49, + 42, 35, 43, 50, 57, 58, 51, 59, + 4, 12, 5, 6, 13, 20, 28, 21, + 14, 7, 15, 22, 29, 36, 44, 37, + 30, 23, 31, 38, 45, 52, 60, 53, + 46, 39, 47, 54, 61, 62, 55, 63 +}; + + +const uint8_t ff_prores_dc_codebook[4] = { + 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 + 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 + 0x4D, // rice_order = 2, exp_golomb_order = 3, switch_bits = 1 + 0x70 // rice_order = 3, exp_golomb_order = 4, switch_bits = 0 +}; + +const uint8_t ff_prores_ac_codebook[7] = { + 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 + 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 + 0x4C, // rice_order = 2, exp_golomb_order = 3, switch_bits = 0 + 0x05, // rice_order = 0, exp_golomb_order = 1, switch_bits = 1 + 0x29, // rice_order = 1, exp_golomb_order = 2, switch_bits = 1 + 0x06, // rice_order = 0, exp_golomb_order = 1, switch_bits = 2 + 0x0A, // rice_order = 0, exp_golomb_order = 2, switch_bits = 2 +}; + +/** + * Lookup tables for adaptive switching between codebooks + * according with previous run/level value. + */ +const uint8_t ff_prores_run_to_cb_index[16] = + { 5, 5, 3, 3, 0, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 2 }; + +const uint8_t ff_prores_lev_to_cb_index[10] = { 0, 6, 3, 5, 0, 1, 1, 1, 1, 2 }; diff --git a/libavcodec/proresdata.h b/libavcodec/proresdata.h new file mode 100644 index 0000000000..1e5d05ece6 --- /dev/null +++ b/libavcodec/proresdata.h @@ -0,0 +1,39 @@ +/* + * Apple ProRes compatible decoder + * + * Copyright (c) 2010-2011 Maxim Poliakovski + * + * This file is part of Libav. + * + * 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. + * + * 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_PRORESDATA_H +#define AVCODEC_PRORESDATA_H + +#include <stdint.h> + +#define FRAME_ID MKBETAG('i', 'c', 'p', 'f') + +extern const uint8_t ff_prores_progressive_scan[64]; +extern const uint8_t ff_prores_interlaced_scan[64]; + +#define FIRST_DC_CB 0xB8 // rice_order = 5, exp_golomb_order = 6, switch_bits = 0 +extern const uint8_t ff_prores_dc_codebook[4]; +extern const uint8_t ff_prores_ac_codebook[7]; +extern const uint8_t ff_prores_run_to_cb_index[16]; +extern const uint8_t ff_prores_lev_to_cb_index[10]; + +#endif /* AVCODEC_PRORESDATA_H */ diff --git a/libavcodec/proresdec.c b/libavcodec/proresdec.c index ba78b62894..207fd9742e 100644 --- a/libavcodec/proresdec.c +++ b/libavcodec/proresdec.c @@ -34,6 +34,7 @@ #include "libavutil/intmath.h" #include "avcodec.h" +#include "proresdata.h" #include "proresdsp.h" #include "get_bits.h" @@ -75,29 +76,6 @@ typedef struct { } ProresContext; -static const uint8_t progressive_scan[64] = { - 0, 1, 8, 9, 2, 3, 10, 11, - 16, 17, 24, 25, 18, 19, 26, 27, - 4, 5, 12, 20, 13, 6, 7, 14, - 21, 28, 29, 22, 15, 23, 30, 31, - 32, 33, 40, 48, 41, 34, 35, 42, - 49, 56, 57, 50, 43, 36, 37, 44, - 51, 58, 59, 52, 45, 38, 39, 46, - 53, 60, 61, 54, 47, 55, 62, 63 -}; - -static const uint8_t interlaced_scan[64] = { - 0, 8, 1, 9, 16, 24, 17, 25, - 2, 10, 3, 11, 18, 26, 19, 27, - 32, 40, 33, 34, 41, 48, 56, 49, - 42, 35, 43, 50, 57, 58, 51, 59, - 4, 12, 5, 6, 13, 20, 28, 21, - 14, 7, 15, 22, 29, 36, 44, 37, - 30, 23, 31, 38, 45, 52, 60, 53, - 46, 39, 47, 54, 61, 62, 55, 63 -}; - - static av_cold int decode_init(AVCodecContext *avctx) { ProresContext *ctx = avctx->priv_data; @@ -175,10 +153,10 @@ static int decode_frame_header(ProresContext *ctx, const uint8_t *buf, if (ctx->scantable_type != ctx->frame_type) { if (!ctx->frame_type) ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, - progressive_scan); + ff_prores_progressive_scan); else ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable, - interlaced_scan); + ff_prores_interlaced_scan); ctx->scantable_type = ctx->frame_type; } @@ -352,16 +330,6 @@ static inline int decode_vlc_codeword(GetBitContext *gb, uint8_t codebook) #define LSB2SIGN(x) (-((x) & 1)) #define TOSIGNED(x) (((x) >> 1) ^ LSB2SIGN(x)) -#define FIRST_DC_CB 0xB8 // rice_order = 5, exp_golomb_order = 6, switch_bits = 0 - -static uint8_t dc_codebook[4] = { - 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 - 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 - 0x4D, // rice_order = 2, exp_golomb_order = 3, switch_bits = 1 - 0x70 // rice_order = 3, exp_golomb_order = 4, switch_bits = 0 -}; - - /** * Decode DC coefficients for all blocks in a slice. */ @@ -380,7 +348,7 @@ static inline void decode_dc_coeffs(GetBitContext *gb, DCTELEM *out, delta = 3; for (i = 1; i < nblocks; i++, out += 64) { - code = decode_vlc_codeword(gb, dc_codebook[FFMIN(FFABS(delta), 3)]); + code = decode_vlc_codeword(gb, ff_prores_dc_codebook[FFMIN(FFABS(delta), 3)]); sign = -(((delta >> 15) & 1) ^ (code & 1)); delta = (((code + 1) >> 1) ^ sign) - sign; @@ -390,26 +358,6 @@ static inline void decode_dc_coeffs(GetBitContext *gb, DCTELEM *out, } -static uint8_t ac_codebook[7] = { - 0x04, // rice_order = 0, exp_golomb_order = 1, switch_bits = 0 - 0x28, // rice_order = 1, exp_golomb_order = 2, switch_bits = 0 - 0x4C, // rice_order = 2, exp_golomb_order = 3, switch_bits = 0 - 0x05, // rice_order = 0, exp_golomb_order = 1, switch_bits = 1 - 0x29, // rice_order = 1, exp_golomb_order = 2, switch_bits = 1 - 0x06, // rice_order = 0, exp_golomb_order = 1, switch_bits = 2 - 0x0A, // rice_order = 0, exp_golomb_order = 2, switch_bits = 2 -}; - -/** - * Lookup tables for adaptive switching between codebooks - * according with previous run/level value. - */ -static uint8_t run_to_cb_index[16] = - { 5, 5, 3, 3, 0, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 2 }; - -static uint8_t lev_to_cb_index[10] = { 0, 6, 3, 5, 0, 1, 1, 1, 1, 2 }; - - /** * Decode AC coefficients for all blocks in a slice. */ @@ -429,20 +377,20 @@ static inline void decode_ac_coeffs(GetBitContext *gb, DCTELEM *out, block_mask = blocks_per_slice - 1; for (pos = blocks_per_slice - 1; pos < max_coeffs;) { - run_cb_index = run_to_cb_index[FFMIN(run, 15)]; - lev_cb_index = lev_to_cb_index[FFMIN(level, 9)]; + run_cb_index = ff_prores_run_to_cb_index[FFMIN(run, 15)]; + lev_cb_index = ff_prores_lev_to_cb_index[FFMIN(level, 9)]; bits_left = get_bits_left(gb); if (bits_left <= 0 || (bits_left <= 8 && !show_bits(gb, bits_left))) return; - run = decode_vlc_codeword(gb, ac_codebook[run_cb_index]); + run = decode_vlc_codeword(gb, ff_prores_ac_codebook[run_cb_index]); bits_left = get_bits_left(gb); if (bits_left <= 0 || (bits_left <= 8 && !show_bits(gb, bits_left))) return; - level = decode_vlc_codeword(gb, ac_codebook[lev_cb_index]) + 1; + level = decode_vlc_codeword(gb, ff_prores_ac_codebook[lev_cb_index]) + 1; pos += run + 1; if (pos >= max_coeffs) @@ -629,7 +577,6 @@ static int decode_picture(ProresContext *ctx, int pic_num, } -#define FRAME_ID MKBETAG('i', 'c', 'p', 'f') #define MOVE_DATA_PTR(nbytes) buf += (nbytes); buf_size -= (nbytes) static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, |