diff options
| author | Tim Redfern <tim@eclectronics.org> | 2013-09-05 17:55:35 +0100 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2013-09-05 17:55:35 +0100 |
| commit | 741fb4b9e135cfb161a749db88713229038577bb (patch) | |
| tree | 08bc9925659cbcac45162bacf31dc6336d4f60b4 /ffmpeg1/libavcodec/paf.c | |
| parent | a2e1bf3495b7bfefdaedb8fc737e969ab06df079 (diff) | |
making act segmenter
Diffstat (limited to 'ffmpeg1/libavcodec/paf.c')
| -rw-r--r-- | ffmpeg1/libavcodec/paf.c | 446 |
1 files changed, 0 insertions, 446 deletions
diff --git a/ffmpeg1/libavcodec/paf.c b/ffmpeg1/libavcodec/paf.c deleted file mode 100644 index 7892314..0000000 --- a/ffmpeg1/libavcodec/paf.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * Packed Animation File video and audio decoder - * Copyright (c) 2012 Paul B Mahol - * - * 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 - */ - -#include "libavutil/intreadwrite.h" -#include "libavcodec/paf.h" -#include "bytestream.h" -#include "avcodec.h" -#include "copy_block.h" -#include "internal.h" - - -static const uint8_t block_sequences[16][8] = -{ - { 0, 0, 0, 0, 0, 0, 0, 0 }, - { 2, 0, 0, 0, 0, 0, 0, 0 }, - { 5, 7, 0, 0, 0, 0, 0, 0 }, - { 5, 0, 0, 0, 0, 0, 0, 0 }, - { 6, 0, 0, 0, 0, 0, 0, 0 }, - { 5, 7, 5, 7, 0, 0, 0, 0 }, - { 5, 7, 5, 0, 0, 0, 0, 0 }, - { 5, 7, 6, 0, 0, 0, 0, 0 }, - { 5, 5, 0, 0, 0, 0, 0, 0 }, - { 3, 0, 0, 0, 0, 0, 0, 0 }, - { 6, 6, 0, 0, 0, 0, 0, 0 }, - { 2, 4, 0, 0, 0, 0, 0, 0 }, - { 2, 4, 5, 7, 0, 0, 0, 0 }, - { 2, 4, 5, 0, 0, 0, 0, 0 }, - { 2, 4, 6, 0, 0, 0, 0, 0 }, - { 2, 4, 5, 7, 5, 7, 0, 0 } -}; - -typedef struct PAFVideoDecContext { - AVFrame pic; - GetByteContext gb; - - int current_frame; - uint8_t *frame[4]; - int frame_size; - int video_size; - - uint8_t *opcodes; -} PAFVideoDecContext; - -static av_cold int paf_vid_init(AVCodecContext *avctx) -{ - PAFVideoDecContext *c = avctx->priv_data; - int i; - - if (avctx->height & 3 || avctx->width & 3) { - av_log(avctx, AV_LOG_ERROR, "width and height must be multiplies of 4\n"); - return AVERROR_INVALIDDATA; - } - - avctx->pix_fmt = AV_PIX_FMT_PAL8; - - avcodec_get_frame_defaults(&c->pic); - c->frame_size = FFALIGN(avctx->height, 256) * avctx->width; - c->video_size = avctx->height * avctx->width; - for (i = 0; i < 4; i++) { - c->frame[i] = av_mallocz(c->frame_size); - if (!c->frame[i]) - return AVERROR(ENOMEM); - } - - return 0; -} - -static int get_video_page_offset(AVCodecContext *avctx, uint8_t a, uint8_t b) -{ - int x, y; - - x = b & 0x7F; - y = ((a & 0x3F) << 1) | (b >> 7 & 1); - - return y * 2 * avctx->width + x * 2; -} - -static void copy4h(AVCodecContext *avctx, uint8_t *dst) -{ - PAFVideoDecContext *c = avctx->priv_data; - int i; - - for (i = 0; i < 4; i++) { - bytestream2_get_buffer(&c->gb, dst, 4); - dst += avctx->width; - } -} - -static void copy_color_mask(AVCodecContext *avctx, uint8_t mask, uint8_t *dst, uint8_t color) -{ - int i; - - for (i = 0; i < 4; i++) { - if ((mask >> 4) & (1 << (3 - i))) - dst[i] = color; - if ((mask & 15) & (1 << (3 - i))) - dst[avctx->width + i] = color; - } -} - -static void copy_src_mask(AVCodecContext *avctx, uint8_t mask, uint8_t *dst, const uint8_t *src) -{ - int i; - - for (i = 0; i < 4; i++) { - if ((mask >> 4) & (1 << (3 - i))) - dst[i] = src[i]; - if ((mask & 15) & (1 << (3 - i))) - dst[avctx->width + i] = src[avctx->width + i]; - } -} - -static int decode_0(AVCodecContext *avctx, uint8_t code, uint8_t *pkt) -{ - PAFVideoDecContext *c = avctx->priv_data; - uint32_t opcode_size, offset; - uint8_t *dst, *dend, mask = 0, color = 0, a, b, p; - const uint8_t *src, *send, *opcodes; - int i, j, x = 0; - - i = bytestream2_get_byte(&c->gb); - if (i) { - if (code & 0x10) { - int align; - - align = bytestream2_tell(&c->gb) & 3; - if (align) - bytestream2_skip(&c->gb, 4 - align); - } - do { - a = bytestream2_get_byte(&c->gb); - b = bytestream2_get_byte(&c->gb); - p = (a & 0xC0) >> 6; - dst = c->frame[p] + get_video_page_offset(avctx, a, b); - dend = c->frame[p] + c->frame_size; - offset = (b & 0x7F) * 2; - j = bytestream2_get_le16(&c->gb) + offset; - - do { - offset++; - if (dst + 3 * avctx->width + 4 > dend) - return AVERROR_INVALIDDATA; - copy4h(avctx, dst); - if ((offset & 0x3F) == 0) - dst += avctx->width * 3; - dst += 4; - } while (offset < j); - } while (--i); - } - - dst = c->frame[c->current_frame]; - dend = c->frame[c->current_frame] + c->frame_size; - do { - a = bytestream2_get_byte(&c->gb); - b = bytestream2_get_byte(&c->gb); - p = (a & 0xC0) >> 6; - src = c->frame[p] + get_video_page_offset(avctx, a, b); - send = c->frame[p] + c->frame_size; - if ((src + 3 * avctx->width + 4 > send) || - (dst + 3 * avctx->width + 4 > dend)) - return AVERROR_INVALIDDATA; - copy_block4(dst, src, avctx->width, avctx->width, 4); - i++; - if ((i & 0x3F) == 0) - dst += avctx->width * 3; - dst += 4; - } while (i < c->video_size / 16); - - opcode_size = bytestream2_get_le16(&c->gb); - bytestream2_skip(&c->gb, 2); - - if (bytestream2_get_bytes_left(&c->gb) < opcode_size) - return AVERROR_INVALIDDATA; - - opcodes = pkt + bytestream2_tell(&c->gb); - bytestream2_skipu(&c->gb, opcode_size); - - dst = c->frame[c->current_frame]; - - for (i = 0; i < avctx->height; i += 4, dst += avctx->width * 3) { - for (j = 0; j < avctx->width; j += 4, dst += 4) { - int opcode, k = 0; - - if (x > opcode_size) - return AVERROR_INVALIDDATA; - if (j & 4) { - opcode = opcodes[x] & 15; - x++; - } else { - opcode = opcodes[x] >> 4; - } - - while (block_sequences[opcode][k]) { - - offset = avctx->width * 2; - code = block_sequences[opcode][k++]; - - switch (code) { - case 2: - offset = 0; - case 3: - color = bytestream2_get_byte(&c->gb); - case 4: - mask = bytestream2_get_byte(&c->gb); - copy_color_mask(avctx, mask, dst + offset, color); - break; - case 5: - offset = 0; - case 6: - a = bytestream2_get_byte(&c->gb); - b = bytestream2_get_byte(&c->gb); - p = (a & 0xC0) >> 6; - src = c->frame[p] + get_video_page_offset(avctx, a, b); - send = c->frame[p] + c->frame_size; - case 7: - if (src + offset + avctx->width + 4 > send) - return AVERROR_INVALIDDATA; - mask = bytestream2_get_byte(&c->gb); - copy_src_mask(avctx, mask, dst + offset, src + offset); - break; - } - } - } - } - - return 0; -} - -static int paf_vid_decode(AVCodecContext *avctx, void *data, - int *got_frame, AVPacket *pkt) -{ - PAFVideoDecContext *c = avctx->priv_data; - uint8_t code, *dst, *src, *end; - int i, frame, ret; - - if ((ret =ff_reget_buffer(avctx, &c->pic)) < 0) - return ret; - - bytestream2_init(&c->gb, pkt->data, pkt->size); - - code = bytestream2_get_byte(&c->gb); - if (code & 0x20) { - for (i = 0; i < 4; i++) - memset(c->frame[i], 0, c->frame_size); - - memset(c->pic.data[1], 0, AVPALETTE_SIZE); - c->current_frame = 0; - c->pic.key_frame = 1; - c->pic.pict_type = AV_PICTURE_TYPE_I; - } else { - c->pic.key_frame = 0; - c->pic.pict_type = AV_PICTURE_TYPE_P; - } - - if (code & 0x40) { - uint32_t *out = (uint32_t *)c->pic.data[1]; - int index, count; - - index = bytestream2_get_byte(&c->gb); - count = bytestream2_get_byte(&c->gb) + 1; - - if (index + count > 256) - return AVERROR_INVALIDDATA; - if (bytestream2_get_bytes_left(&c->gb) < 3*count) - return AVERROR_INVALIDDATA; - - out += index; - for (i = 0; i < count; i++) { - unsigned r, g, b; - - r = bytestream2_get_byteu(&c->gb); - r = r << 2 | r >> 4; - g = bytestream2_get_byteu(&c->gb); - g = g << 2 | g >> 4; - b = bytestream2_get_byteu(&c->gb); - b = b << 2 | b >> 4; - *out++ = 0xFFU << 24 | r << 16 | g << 8 | b; - } - c->pic.palette_has_changed = 1; - } - - switch (code & 0x0F) { - case 0: - if ((ret = decode_0(avctx, code, pkt->data)) < 0) - return ret; - break; - case 1: - dst = c->frame[c->current_frame]; - bytestream2_skip(&c->gb, 2); - if (bytestream2_get_bytes_left(&c->gb) < c->video_size) - return AVERROR_INVALIDDATA; - bytestream2_get_bufferu(&c->gb, dst, c->video_size); - break; - case 2: - frame = bytestream2_get_byte(&c->gb); - if (frame > 3) - return AVERROR_INVALIDDATA; - if (frame != c->current_frame) - memcpy(c->frame[c->current_frame], c->frame[frame], c->frame_size); - break; - case 4: - dst = c->frame[c->current_frame]; - end = dst + c->video_size; - - bytestream2_skip(&c->gb, 2); - - while (dst < end) { - int8_t code; - int count; - - if (bytestream2_get_bytes_left(&c->gb) < 2) - return AVERROR_INVALIDDATA; - - code = bytestream2_get_byteu(&c->gb); - count = FFABS(code) + 1; - - if (dst + count > end) - return AVERROR_INVALIDDATA; - if (code < 0) - memset(dst, bytestream2_get_byteu(&c->gb), count); - else - bytestream2_get_buffer(&c->gb, dst, count); - dst += count; - } - break; - default: - avpriv_request_sample(avctx, "unknown/invalid code"); - return AVERROR_INVALIDDATA; - } - - dst = c->pic.data[0]; - src = c->frame[c->current_frame]; - for (i = 0; i < avctx->height; i++) { - memcpy(dst, src, avctx->width); - dst += c->pic.linesize[0]; - src += avctx->width; - } - - c->current_frame = (c->current_frame + 1) & 3; - if ((ret = av_frame_ref(data, &c->pic)) < 0) - return ret; - - *got_frame = 1; - - return pkt->size; -} - -static av_cold int paf_vid_close(AVCodecContext *avctx) -{ - PAFVideoDecContext *c = avctx->priv_data; - int i; - - av_frame_unref(&c->pic); - - for (i = 0; i < 4; i++) - av_freep(&c->frame[i]); - - return 0; -} - -static av_cold int paf_aud_init(AVCodecContext *avctx) -{ - if (avctx->channels != 2) { - av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n"); - return AVERROR_INVALIDDATA; - } - - avctx->channel_layout = AV_CH_LAYOUT_STEREO; - avctx->sample_fmt = AV_SAMPLE_FMT_S16; - - return 0; -} - -static int paf_aud_decode(AVCodecContext *avctx, void *data, - int *got_frame_ptr, AVPacket *pkt) -{ - AVFrame *frame = data; - uint8_t *buf = pkt->data; - int16_t *output_samples; - const uint8_t *t; - int frames, ret, i, j, k; - - frames = pkt->size / PAF_SOUND_FRAME_SIZE; - if (frames < 1) - return AVERROR_INVALIDDATA; - - frame->nb_samples = PAF_SOUND_SAMPLES * frames; - if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) - return ret; - - output_samples = (int16_t *)frame->data[0]; - for (i = 0; i < frames; i++) { - t = buf + 256 * sizeof(uint16_t); - for (j = 0; j < PAF_SOUND_SAMPLES; j++) { - for (k = 0; k < 2; k++) { - *output_samples++ = AV_RL16(buf + *t * 2); - t++; - } - } - buf += PAF_SOUND_FRAME_SIZE; - } - - *got_frame_ptr = 1; - - return pkt->size; -} - -AVCodec ff_paf_video_decoder = { - .name = "paf_video", - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_PAF_VIDEO, - .priv_data_size = sizeof(PAFVideoDecContext), - .init = paf_vid_init, - .close = paf_vid_close, - .decode = paf_vid_decode, - .capabilities = CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Amazing Studio Packed Animation File Video"), -}; - -AVCodec ff_paf_audio_decoder = { - .name = "paf_audio", - .type = AVMEDIA_TYPE_AUDIO, - .id = AV_CODEC_ID_PAF_AUDIO, - .init = paf_aud_init, - .decode = paf_aud_decode, - .capabilities = CODEC_CAP_DR1, - .long_name = NULL_IF_CONFIG_SMALL("Amazing Studio Packed Animation File Audio"), -}; 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