diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2005-04-20 13:42:47 +0400 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2005-04-20 13:42:47 +0400 |
commit | 856dbbff7f3e7a78cc1a435cacf7f273f3e7277d (patch) | |
tree | 4ab5c84c19c477adcd4fe6cb9102192f89b9da52 /libavcodec | |
parent | 29df259923ec9c4d65bc127aeb734569dc5eaae6 (diff) |
Indeo 2 decoder by (Kostya <> kostya.shishkov gmail com)
Originally committed as revision 4141 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/Makefile | 2 | ||||
-rw-r--r-- | libavcodec/allcodecs.c | 1 | ||||
-rw-r--r-- | libavcodec/avcodec.h | 2 | ||||
-rw-r--r-- | libavcodec/indeo2.c | 214 | ||||
-rw-r--r-- | libavcodec/indeo2data.h | 74 |
5 files changed, 292 insertions, 1 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index f70877b40e..b3edae991c 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -23,7 +23,7 @@ OBJS= bitstream.o utils.o mem.o allcodecs.o \ flac.o vp3dsp.o integer.o snow.o tscc.o sonic.o ulti.o h264idct.o \ qdrw.o xl.o rangecoder.o png.o pnm.o qpeg.o vc9.o h263.o h261.o \ msmpeg4.o h263dec.o svq1.o rv10.o wmadec.o indeo3.o shorten.o loco.o \ - alac.o wnv1.o ws-snd1.o aasc.o + alac.o wnv1.o ws-snd1.o aasc.o indeo2.o AMROBJS= ifeq ($(AMR_NB),yes) diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index ef61cadb32..f07290a3f9 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -122,6 +122,7 @@ void avcodec_register_all(void) register_avcodec(&svq3_decoder); register_avcodec(&wmav1_decoder); register_avcodec(&wmav2_decoder); + register_avcodec(&indeo2_decoder); register_avcodec(&indeo3_decoder); register_avcodec(&tscc_decoder); register_avcodec(&ulti_decoder); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 64080cf5eb..7e301ac767 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -107,6 +107,7 @@ enum CodecID { CODEC_ID_LOCO, CODEC_ID_WNV1, CODEC_ID_AASC, + CODEC_ID_INDEO2, /* various pcm "codecs" */ CODEC_ID_PCM_S16LE= 0x10000, @@ -2019,6 +2020,7 @@ extern AVCodec wnv1_decoder; extern AVCodec aasc_decoder; extern AVCodec alac_decoder; extern AVCodec ws_snd1_decoder; +extern AVCodec indeo2_decoder; /* pcm codecs */ #define PCM_CODEC(id, name) \ diff --git a/libavcodec/indeo2.c b/libavcodec/indeo2.c new file mode 100644 index 0000000000..a2f4583c64 --- /dev/null +++ b/libavcodec/indeo2.c @@ -0,0 +1,214 @@ +/* + * Indel Indeo 2 codec + * Copyright (c) 2005 Konstantin Shishkov + * + * This library 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 of the License, or (at your option) any later version. + * + * This library 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 this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +/** + * @file indeo2.c + * Intel Indeo 2 decoder. + */ + +#include "avcodec.h" +#include "bitstream.h" +#include "indeo2data.h" + +typedef struct Ir2Context{ + AVCodecContext *avctx; + AVFrame picture; + GetBitContext gb; + int decode_delta; +} Ir2Context; + +#define CODE_VLC_BITS 14 +static VLC ir2_vlc; + +/* Indeo 2 codes are in range 0x01..0x7F and 0x81..0x90 */ +static inline int ir2_get_code(GetBitContext *gb) +{ + int code; + + code = get_vlc2(gb, ir2_vlc.table, CODE_VLC_BITS, 1) + 1; + if (code >= 0x80) + return (code + 1); + return code; +} +#define CLAMP_TO_BYTE(value) \ +if (value > 255) \ + value = 255; \ +else if (value < 0) \ + value = 0; \ + +static void ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst, int stride, + const uint8_t *table) +{ + int i; + int j; + int out = 0; + int c; + int t; + + /* first line contain absolute values, other lines contain deltas */ + while (out < width){ + c = ir2_get_code(&ctx->gb); + if(c > 0x80) { /* we have a run */ + c -= 0x80; + for (i = 0; i < c * 2; i++) + dst[out++] = 0x80; + } else { /* copy two values from table */ + dst[out++] = table[c * 2]; + dst[out++] = table[(c * 2) + 1]; + } + } + dst += stride; + + for (j = 1; j < height; j++){ + out = 0; + while (out < width){ + c = ir2_get_code(&ctx->gb); + if(c > 0x80) { /* we have a skip */ + c -= 0x80; + for (i = 0; i < c * 2; i++) { + dst[out] = dst[out - stride]; + out++; + } + } else { /* add two deltas from table */ + t = dst[out - stride] + (table[c * 2] - 128); + CLAMP_TO_BYTE(t); + dst[out] = t; + out++; + t = dst[out - stride] + (table[(c * 2) + 1] - 128); + CLAMP_TO_BYTE(t); + dst[out] = t; + out++; + } + } + dst += stride; + } +} + +static void ir2_decode_plane_inter(Ir2Context *ctx, int width, int height, uint8_t *dst, int stride, + const uint8_t *table) +{ + int j; + int out = 0; + int c; + int t; + + for (j = 0; j < height; j++){ + out = 0; + while (out < width){ + c = ir2_get_code(&ctx->gb); + if(c > 0x80) { /* we have a skip */ + c -= 0x80; + out += c * 2; + } else { /* add two deltas from table */ + t = dst[out] + (table[c * 2] - 128); + CLAMP_TO_BYTE(t); + dst[out] = t; + out++; + t = dst[out] + (table[(c * 2) + 1] - 128); + CLAMP_TO_BYTE(t); + dst[out] = t; + out++; + } + } + dst += stride; + } +} + +static int ir2_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + Ir2Context * const s = avctx->priv_data; + AVFrame *picture = data; + AVFrame * const p= (AVFrame*)&s->picture; + int start; + int i; + + if(p->data[0]) + avctx->release_buffer(avctx, p); + + p->reference = 1; + p->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; + if (avctx->reget_buffer(avctx, p)) { + av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); + return -1; + } + + s->decode_delta = buf[18]; + + /* decide whether frame uses deltas or not */ + + for (i = 0; i < buf_size; i++) + buf[i] = ff_reverse[buf[i]]; + + start = 48; /* hardcoded for now */ + + init_get_bits(&s->gb, buf + start, buf_size - start); + + if (s->decode_delta) { /* intraframe */ + ir2_decode_plane(s, avctx->width, avctx->height, + s->picture.data[0], s->picture.linesize[0], ir2_luma_table); + /* swapped U and V */ + ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2, + s->picture.data[2], s->picture.linesize[2], ir2_luma_table); + ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2, + s->picture.data[1], s->picture.linesize[1], ir2_luma_table); + } else { /* interframe */ + ir2_decode_plane_inter(s, avctx->width, avctx->height, + s->picture.data[0], s->picture.linesize[0], ir2_luma_table); + /* swapped U and V */ + ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2, + s->picture.data[2], s->picture.linesize[2], ir2_luma_table); + ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2, + s->picture.data[1], s->picture.linesize[1], ir2_luma_table); + } + + *picture= *(AVFrame*)&s->picture; + *data_size = sizeof(AVPicture); + + return buf_size; +} + +static int ir2_decode_init(AVCodecContext *avctx){ + Ir2Context * const ic = avctx->priv_data; + + ic->avctx = avctx; + + avctx->pix_fmt= PIX_FMT_YUV410P; + + if (!ir2_vlc.table) + init_vlc(&ir2_vlc, CODE_VLC_BITS, IR2_CODES, + &ir2_codes[0][1], 4, 2, + &ir2_codes[0][0], 4, 2, 1); + + return 0; +} + +AVCodec indeo2_decoder = { + "indeo2", + CODEC_TYPE_VIDEO, + CODEC_ID_INDEO2, + sizeof(Ir2Context), + ir2_decode_init, + NULL, + NULL, + ir2_decode_frame, + CODEC_CAP_DR1, +}; diff --git a/libavcodec/indeo2data.h b/libavcodec/indeo2data.h new file mode 100644 index 0000000000..f58b8415fd --- /dev/null +++ b/libavcodec/indeo2data.h @@ -0,0 +1,74 @@ +#define IR2_CODES 143 +static const uint16_t ir2_codes[IR2_CODES][2] = { + {0x0000, 3}, {0x0001, 3}, {0x0003, 3}, {0x0010, 5}, + {0x0012, 5}, {0x0013, 5}, {0x0016, 5}, {0x0017, 5}, + {0x0031, 6}, {0x0032, 6}, {0x0033, 6}, {0x0034, 6}, + {0x0035, 6}, {0x0036, 6}, {0x00E0, 8}, {0x00E1, 8}, + {0x00E4, 8}, {0x00E5, 8}, {0x00E6, 8}, {0x00E7, 8}, + {0x00E9, 8}, {0x00EA, 8}, {0x00EC, 8}, {0x00ED, 8}, + {0x00EF, 8}, {0x01E0, 9}, {0x01E2, 9}, {0x01E3, 9}, + {0x01E5, 9}, {0x01E6, 9}, {0x01E8, 9}, {0x01E9, 9}, + {0x01EB, 9}, {0x01EC, 9}, {0x01EE, 9}, {0x01EF, 9}, + {0x03E0, 10}, {0x03E1, 10}, {0x03E2, 10}, {0x03E3, 10}, + {0x03E4, 10}, {0x03E5, 10}, {0x03E6, 10}, {0x03E7, 10}, + {0x03E8, 10}, {0x03E9, 10}, {0x03EA, 10}, {0x03EB, 10}, + {0x03EC, 10}, {0x03ED, 10}, {0x03EE, 10}, {0x03EF, 10}, + {0x1F80, 13}, {0x1F81, 13}, {0x1F82, 13}, {0x1F83, 13}, + {0x1F84, 13}, {0x1F85, 13}, {0x1F86, 13}, {0x1F87, 13}, + {0x1F88, 13}, {0x1F89, 13}, {0x1F8A, 13}, {0x1F8B, 13}, + {0x1F8C, 13}, {0x1F8D, 13}, {0x1F8E, 13}, {0x1F8F, 13}, + {0x1F90, 13}, {0x1F91, 13}, {0x1F92, 13}, {0x1F93, 13}, + {0x1F94, 13}, {0x1F95, 13}, {0x1F96, 13}, {0x1F97, 13}, + {0x1F98, 13}, {0x1F99, 13}, {0x1F9A, 13}, {0x1F9B, 13}, + {0x1F9C, 13}, {0x1F9D, 13}, {0x1F9E, 13}, {0x1F9F, 13}, + {0x1FA0, 13}, {0x1FA1, 13}, {0x1FA2, 13}, {0x1FA3, 13}, + {0x1FA4, 13}, {0x1FA5, 13}, {0x1FA6, 13}, {0x1FA7, 13}, + {0x1FA8, 13}, {0x1FA9, 13}, {0x1FAA, 13}, {0x1FAB, 13}, + {0x1FAC, 13}, {0x1FAD, 13}, {0x1FAE, 13}, {0x1FAF, 13}, + {0x1FB0, 13}, {0x1FB1, 13}, {0x1FB2, 13}, {0x1FB3, 13}, + {0x1FB4, 13}, {0x1FB5, 13}, {0x1FB6, 13}, {0x1FB7, 13}, + {0x1FB8, 13}, {0x1FB9, 13}, {0x1FBA, 13}, {0x1FBB, 13}, + {0x1FBC, 13}, {0x1FBD, 13}, {0x1FBE, 13}, {0x1FBF, 13}, + {0x3F80, 14}, {0x3F81, 14}, {0x3F82, 14}, {0x3F83, 14}, + {0x3F84, 14}, {0x3F85, 14}, {0x3F86, 14}, {0x3F87, 14}, + {0x3F88, 14}, {0x3F89, 14}, {0x3F8A, 14}, {0x0002, 3}, + {0x0011, 5}, {0x0014, 5}, {0x0015, 5}, {0x0030, 6}, + {0x0037, 6}, {0x00E2, 8}, {0x00E3, 8}, {0x00E8, 8}, + {0x00EB, 8}, {0x00EE, 8}, {0x01E1, 9}, {0x01E4, 9}, + {0x01E7, 9}, {0x01EA, 9}, {0x01ED, 9} +}; + +static const uint8_t ir2_luma_table[256] = { + 0x80, 0x80, 0x84, 0x84, 0x7C, 0x7C, 0x7F, 0x85, + 0x81, 0x7B, 0x85, 0x7F, 0x7B, 0x81, 0x8C, 0x8C, + 0x74, 0x74, 0x83, 0x8D, 0x7D, 0x73, 0x8D, 0x83, + 0x73, 0x7D, 0x77, 0x89, 0x89, 0x77, 0x89, 0x77, + 0x77, 0x89, 0x8C, 0x95, 0x74, 0x6B, 0x95, 0x8C, + 0x6B, 0x74, 0x7C, 0x90, 0x84, 0x70, 0x90, 0x7C, + 0x70, 0x84, 0x96, 0x96, 0x6A, 0x6A, 0x82, 0x98, + 0x7E, 0x68, 0x98, 0x82, 0x68, 0x7E, 0x97, 0xA2, + 0x69, 0x5E, 0xA2, 0x97, 0x5E, 0x69, 0xA2, 0xA2, + 0x5E, 0x5E, 0x8B, 0xA3, 0x75, 0x5D, 0xA3, 0x8B, + 0x5D, 0x75, 0x71, 0x95, 0x8F, 0x6B, 0x95, 0x71, + 0x6B, 0x8F, 0x78, 0x9D, 0x88, 0x63, 0x9D, 0x78, + 0x63, 0x88, 0x7F, 0xA7, 0x81, 0x59, 0xA7, 0x7F, + 0x59, 0x81, 0xA4, 0xB1, 0x5C, 0x4F, 0xB1, 0xA4, + 0x4F, 0x5C, 0x96, 0xB1, 0x6A, 0x4F, 0xB1, 0x96, + 0x4F, 0x6A, 0xB2, 0xB2, 0x4E, 0x4E, 0x65, 0x9B, + 0x9B, 0x65, 0x9B, 0x65, 0x65, 0x9B, 0x89, 0xB4, + 0x77, 0x4C, 0xB4, 0x89, 0x4C, 0x77, 0x6A, 0xA3, + 0x96, 0x5D, 0xA3, 0x6A, 0x5D, 0x96, 0x73, 0xAC, + 0x8D, 0x54, 0xAC, 0x73, 0x54, 0x8D, 0xB4, 0xC3, + 0x4C, 0x3D, 0xC3, 0xB4, 0x3D, 0x4C, 0xA4, 0xC3, + 0x5C, 0x3D, 0xC3, 0xA4, 0x3D, 0x5C, 0xC4, 0xC4, + 0x3C, 0x3C, 0x96, 0xC6, 0x6A, 0x3A, 0xC6, 0x96, + 0x3A, 0x6A, 0x7C, 0xBA, 0x84, 0x46, 0xBA, 0x7C, + 0x46, 0x84, 0x5B, 0xAB, 0xA5, 0x55, 0xAB, 0x5B, + 0x55, 0xA5, 0x63, 0xB4, 0x9D, 0x4C, 0xB4, 0x63, + 0x4C, 0x9D, 0x86, 0xCA, 0x7A, 0x36, 0xCA, 0x86, + 0x36, 0x7A, 0xB6, 0xD7, 0x4A, 0x29, 0xD7, 0xB6, + 0x29, 0x4A, 0xC8, 0xD7, 0x38, 0x29, 0xD7, 0xC8, + 0x29, 0x38, 0xA4, 0xD8, 0x5C, 0x28, 0xD8, 0xA4, + 0x28, 0x5C, 0x6C, 0xC1, 0x94, 0x3F, 0xC1, 0x6C, + 0x3F, 0x94, 0xD9, 0xD9, 0x27, 0x27, 0x80, 0x80 +}; 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