diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/dsicinav.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/dsicinav.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/contrib/ffmpeg/libavcodec/dsicinav.c b/contrib/ffmpeg/libavcodec/dsicinav.c deleted file mode 100644 index c7c3f5627..000000000 --- a/contrib/ffmpeg/libavcodec/dsicinav.c +++ /dev/null @@ -1,362 +0,0 @@ -/* - * Delphine Software International CIN Audio/Video Decoders - * Copyright (c) 2006 Gregory Montoir (cyx@users.sourceforge.net) - * - * 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 dsicinav.c - * Delphine Software International CIN audio/video decoders - */ - -#include "avcodec.h" -#include "common.h" - - -typedef enum CinVideoBitmapIndex { - CIN_CUR_BMP = 0, /* current */ - CIN_PRE_BMP = 1, /* previous */ - CIN_INT_BMP = 2 /* intermediate */ -} CinVideoBitmapIndex; - -typedef struct CinVideoContext { - AVCodecContext *avctx; - AVFrame frame; - unsigned int bitmap_size; - uint32_t palette[256]; - uint8_t *bitmap_table[3]; -} CinVideoContext; - -typedef struct CinAudioContext { - AVCodecContext *avctx; - int initial_decode_frame; - int delta; -} CinAudioContext; - - -/* table defining a geometric sequence with multiplier = 32767 ^ (1 / 128) */ -static const int16_t cinaudio_delta16_table[256] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, -30210, -27853, -25680, -23677, -21829, - -20126, -18556, -17108, -15774, -14543, -13408, -12362, -11398, - -10508, -9689, -8933, -8236, -7593, -7001, -6455, -5951, - -5487, -5059, -4664, -4300, -3964, -3655, -3370, -3107, - -2865, -2641, -2435, -2245, -2070, -1908, -1759, -1622, - -1495, -1379, -1271, -1172, -1080, -996, -918, -847, - -781, -720, -663, -612, -564, -520, -479, -442, - -407, -376, -346, -319, -294, -271, -250, -230, - -212, -196, -181, -166, -153, -141, -130, -120, - -111, -102, -94, -87, -80, -74, -68, -62, - -58, -53, -49, -45, -41, -38, -35, -32, - -30, -27, -25, -23, -21, -20, -18, -17, - -15, -14, -13, -12, -11, -10, -9, -8, - -7, -6, -5, -4, -3, -2, -1, 0, - 0, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 17, 18, 20, 21, 23, 25, 27, 30, - 32, 35, 38, 41, 45, 49, 53, 58, - 62, 68, 74, 80, 87, 94, 102, 111, - 120, 130, 141, 153, 166, 181, 196, 212, - 230, 250, 271, 294, 319, 346, 376, 407, - 442, 479, 520, 564, 612, 663, 720, 781, - 847, 918, 996, 1080, 1172, 1271, 1379, 1495, - 1622, 1759, 1908, 2070, 2245, 2435, 2641, 2865, - 3107, 3370, 3655, 3964, 4300, 4664, 5059, 5487, - 5951, 6455, 7001, 7593, 8236, 8933, 9689, 10508, - 11398, 12362, 13408, 14543, 15774, 17108, 18556, 20126, - 21829, 23677, 25680, 27853, 30210, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0 -}; - - -static int cinvideo_decode_init(AVCodecContext *avctx) -{ - CinVideoContext *cin = (CinVideoContext *)avctx->priv_data; - unsigned int i; - - cin->avctx = avctx; - avctx->pix_fmt = PIX_FMT_PAL8; - avctx->has_b_frames = 0; - - cin->frame.data[0] = NULL; - - cin->bitmap_size = avctx->width * avctx->height; - for (i = 0; i < 3; ++i) { - cin->bitmap_table[i] = av_mallocz(cin->bitmap_size); - if (!cin->bitmap_table[i]) - av_log(avctx, AV_LOG_ERROR, "Can't allocate bitmap buffers.\n"); - } - - return 0; -} - -static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst, int size) -{ - while (size--) - *dst++ += *src++; -} - -static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned char *dst, int dst_size) -{ - int b, huff_code = 0; - unsigned char huff_code_table[15]; - unsigned char *dst_cur = dst; - unsigned char *dst_end = dst + dst_size; - const unsigned char *src_end = src + src_size; - - memcpy(huff_code_table, src, 15); src += 15; src_size -= 15; - - while (src < src_end) { - huff_code = *src++; - if ((huff_code >> 4) == 15) { - b = huff_code << 4; - huff_code = *src++; - *dst_cur++ = b | (huff_code >> 4); - } else - *dst_cur++ = huff_code_table[huff_code >> 4]; - if (dst_cur >= dst_end) - break; - - huff_code &= 15; - if (huff_code == 15) { - *dst_cur++ = *src++; - } else - *dst_cur++ = huff_code_table[huff_code]; - if (dst_cur >= dst_end) - break; - } - - return dst_cur - dst; -} - -static void cin_decode_lzss(const unsigned char *src, int src_size, unsigned char *dst, int dst_size) -{ - uint16_t cmd; - int i, sz, offset, code; - unsigned char *dst_end = dst + dst_size; - const unsigned char *src_end = src + src_size; - - while (src < src_end && dst < dst_end) { - code = *src++; - for (i = 0; i < 8 && src < src_end && dst < dst_end; ++i) { - if (code & (1 << i)) { - *dst++ = *src++; - } else { - cmd = AV_RL16(src); src += 2; - offset = cmd >> 4; - sz = (cmd & 0xF) + 2; - /* don't use memcpy/memmove here as the decoding routine (ab)uses */ - /* buffer overlappings to repeat bytes in the destination */ - sz = FFMIN(sz, dst_end - dst); - while (sz--) { - *dst = *(dst - offset - 1); - ++dst; - } - } - } - } -} - -static void cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size) -{ - int len, code; - unsigned char *dst_end = dst + dst_size; - const unsigned char *src_end = src + src_size; - - while (src < src_end && dst < dst_end) { - code = *src++; - if (code & 0x80) { - len = code - 0x7F; - memset(dst, *src++, FFMIN(len, dst_end - dst)); - } else { - len = code + 1; - memcpy(dst, src, FFMIN(len, dst_end - dst)); - src += len; - } - dst += len; - } -} - -static int cinvideo_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - CinVideoContext *cin = (CinVideoContext *)avctx->priv_data; - int i, y, palette_type, palette_colors_count, bitmap_frame_type, bitmap_frame_size; - - cin->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; - if (avctx->reget_buffer(avctx, &cin->frame)) { - av_log(cin->avctx, AV_LOG_ERROR, "delphinecinvideo: reget_buffer() failed to allocate a frame\n"); - return -1; - } - - palette_type = buf[0]; - palette_colors_count = buf[1] | (buf[2] << 8); - bitmap_frame_type = buf[3]; - buf += 4; - - bitmap_frame_size = buf_size - 4; - - /* handle palette */ - if (palette_type == 0) { - for (i = 0; i < palette_colors_count; ++i) { - cin->palette[i] = (buf[2] << 16) | (buf[1] << 8) | buf[0]; - buf += 3; - bitmap_frame_size -= 3; - } - } else { - for (i = 0; i < palette_colors_count; ++i) { - cin->palette[buf[0]] = (buf[3] << 16) | (buf[2] << 8) | buf[1]; - buf += 4; - bitmap_frame_size -= 4; - } - } - memcpy(cin->frame.data[1], cin->palette, sizeof(cin->palette)); - cin->frame.palette_has_changed = 1; - - /* note: the decoding routines below assumes that surface.width = surface.pitch */ - switch (bitmap_frame_type) { - case 9: - cin_decode_rle(buf, bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 34: - cin_decode_rle(buf, bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP], - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 35: - cin_decode_huffman(buf, bitmap_frame_size, - cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size); - cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 36: - bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size, - cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size); - cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP], - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 37: - cin_decode_huffman(buf, bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 38: - cin_decode_lzss(buf, bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - case 39: - cin_decode_lzss(buf, bitmap_frame_size, - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP], - cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size); - break; - } - - for (y = 0; y < cin->avctx->height; ++y) - memcpy(cin->frame.data[0] + (cin->avctx->height - 1 - y) * cin->frame.linesize[0], - cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width, - cin->avctx->width); - - FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_table[CIN_PRE_BMP]); - - *data_size = sizeof(AVFrame); - *(AVFrame *)data = cin->frame; - - return buf_size; -} - -static int cinvideo_decode_end(AVCodecContext *avctx) -{ - CinVideoContext *cin = (CinVideoContext *)avctx->priv_data; - int i; - - if (cin->frame.data[0]) - avctx->release_buffer(avctx, &cin->frame); - - for (i = 0; i < 3; ++i) - av_free(cin->bitmap_table[i]); - - return 0; -} - -static int cinaudio_decode_init(AVCodecContext *avctx) -{ - CinAudioContext *cin = (CinAudioContext *)avctx->priv_data; - - cin->avctx = avctx; - cin->initial_decode_frame = 1; - cin->delta = 0; - - return 0; -} - -static int cinaudio_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - CinAudioContext *cin = (CinAudioContext *)avctx->priv_data; - uint8_t *src = buf; - int16_t *samples = (int16_t *)data; - - if (cin->initial_decode_frame) { - cin->initial_decode_frame = 0; - cin->delta = (int16_t)AV_RL16(src); src += 2; - *samples++ = cin->delta; - buf_size -= 2; - } - while (buf_size > 0) { - cin->delta += cinaudio_delta16_table[*src++]; - cin->delta = av_clip(cin->delta, -32768, 32767); - *samples++ = cin->delta; - --buf_size; - } - - *data_size = (uint8_t *)samples - (uint8_t *)data; - - return src - buf; -} - - -AVCodec dsicinvideo_decoder = { - "dsicinvideo", - CODEC_TYPE_VIDEO, - CODEC_ID_DSICINVIDEO, - sizeof(CinVideoContext), - cinvideo_decode_init, - NULL, - cinvideo_decode_end, - cinvideo_decode_frame, - CODEC_CAP_DR1, -}; - -AVCodec dsicinaudio_decoder = { - "dsicinaudio", - CODEC_TYPE_AUDIO, - CODEC_ID_DSICINAUDIO, - sizeof(CinAudioContext), - cinaudio_decode_init, - NULL, - NULL, - cinaudio_decode_frame, -}; |