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/ffv1.c | |
| parent | a2e1bf3495b7bfefdaedb8fc737e969ab06df079 (diff) | |
making act segmenter
Diffstat (limited to 'ffmpeg1/libavcodec/ffv1.c')
| -rw-r--r-- | ffmpeg1/libavcodec/ffv1.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/ffmpeg1/libavcodec/ffv1.c b/ffmpeg1/libavcodec/ffv1.c deleted file mode 100644 index 404b0e3..0000000 --- a/ffmpeg1/libavcodec/ffv1.c +++ /dev/null @@ -1,221 +0,0 @@ -/* - * FFV1 codec for libavcodec - * - * Copyright (c) 2003-2012 Michael Niedermayer <michaelni@gmx.at> - * - * 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 - * FF Video Codec 1 (a lossless codec) - */ - -#include "libavutil/avassert.h" -#include "libavutil/crc.h" -#include "libavutil/opt.h" -#include "libavutil/imgutils.h" -#include "libavutil/pixdesc.h" -#include "libavutil/timer.h" -#include "avcodec.h" -#include "internal.h" -#include "rangecoder.h" -#include "golomb.h" -#include "mathops.h" -#include "ffv1.h" - -av_cold int ffv1_common_init(AVCodecContext *avctx) -{ - FFV1Context *s = avctx->priv_data; - - if (!avctx->width || !avctx->height) - return AVERROR_INVALIDDATA; - - s->avctx = avctx; - s->flags = avctx->flags; - - avcodec_get_frame_defaults(&s->picture); - - ff_dsputil_init(&s->dsp, avctx); - - s->width = avctx->width; - s->height = avctx->height; - - // defaults - s->num_h_slices = 1; - s->num_v_slices = 1; - - return 0; -} - -int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs) -{ - int j; - - fs->plane_count = f->plane_count; - fs->transparency = f->transparency; - for (j = 0; j < f->plane_count; j++) { - PlaneContext *const p = &fs->plane[j]; - - if (fs->ac) { - if (!p->state) - p->state = av_malloc(CONTEXT_SIZE * p->context_count * - sizeof(uint8_t)); - if (!p->state) - return AVERROR(ENOMEM); - } else { - if (!p->vlc_state) - p->vlc_state = av_malloc(p->context_count * sizeof(VlcState)); - if (!p->vlc_state) - return AVERROR(ENOMEM); - } - } - - if (fs->ac > 1) { - //FIXME only redo if state_transition changed - for (j = 1; j < 256; j++) { - fs->c. one_state[ j] = f->state_transition[j]; - fs->c.zero_state[256 - j] = 256 - fs->c.one_state[j]; - } - } - - return 0; -} - -int ffv1_init_slices_state(FFV1Context *f) -{ - int i, ret; - for (i = 0; i < f->slice_count; i++) { - FFV1Context *fs = f->slice_context[i]; - if ((ret = ffv1_init_slice_state(f, fs)) < 0) - return AVERROR(ENOMEM); - } - return 0; -} - -av_cold int ffv1_init_slice_contexts(FFV1Context *f) -{ - int i; - - f->slice_count = f->num_h_slices * f->num_v_slices; - av_assert0(f->slice_count > 0); - - for (i = 0; i < f->slice_count; i++) { - FFV1Context *fs = av_mallocz(sizeof(*fs)); - int sx = i % f->num_h_slices; - int sy = i / f->num_h_slices; - int sxs = f->avctx->width * sx / f->num_h_slices; - int sxe = f->avctx->width * (sx + 1) / f->num_h_slices; - int sys = f->avctx->height * sy / f->num_v_slices; - int sye = f->avctx->height * (sy + 1) / f->num_v_slices; - - if (!fs) - return AVERROR(ENOMEM); - - f->slice_context[i] = fs; - memcpy(fs, f, sizeof(*fs)); - memset(fs->rc_stat2, 0, sizeof(fs->rc_stat2)); - - fs->slice_width = sxe - sxs; - fs->slice_height = sye - sys; - fs->slice_x = sxs; - fs->slice_y = sys; - - fs->sample_buffer = av_malloc(3 * MAX_PLANES * (fs->width + 6) * - sizeof(*fs->sample_buffer)); - if (!fs->sample_buffer) - return AVERROR(ENOMEM); - } - return 0; -} - -int ffv1_allocate_initial_states(FFV1Context *f) -{ - int i; - - for (i = 0; i < f->quant_table_count; i++) { - f->initial_states[i] = av_malloc(f->context_count[i] * - sizeof(*f->initial_states[i])); - if (!f->initial_states[i]) - return AVERROR(ENOMEM); - memset(f->initial_states[i], 128, - f->context_count[i] * sizeof(*f->initial_states[i])); - } - return 0; -} - -void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs) -{ - int i, j; - - for (i = 0; i < f->plane_count; i++) { - PlaneContext *p = &fs->plane[i]; - - p->interlace_bit_state[0] = 128; - p->interlace_bit_state[1] = 128; - - if (fs->ac) { - if (f->initial_states[p->quant_table_index]) { - memcpy(p->state, f->initial_states[p->quant_table_index], - CONTEXT_SIZE * p->context_count); - } else - memset(p->state, 128, CONTEXT_SIZE * p->context_count); - } else { - for (j = 0; j < p->context_count; j++) { - p->vlc_state[j].drift = 0; - p->vlc_state[j].error_sum = 4; //FFMAX((RANGE + 32)/64, 2); - p->vlc_state[j].bias = 0; - p->vlc_state[j].count = 1; - } - } - } -} - - -av_cold int ffv1_close(AVCodecContext *avctx) -{ - FFV1Context *s = avctx->priv_data; - int i, j; - - av_frame_unref(&s->last_picture); - - for (j = 0; j < s->slice_count; j++) { - FFV1Context *fs = s->slice_context[j]; - for (i = 0; i < s->plane_count; i++) { - PlaneContext *p = &fs->plane[i]; - - av_freep(&p->state); - av_freep(&p->vlc_state); - } - av_freep(&fs->sample_buffer); - } - - av_freep(&avctx->stats_out); - for (j = 0; j < s->quant_table_count; j++) { - av_freep(&s->initial_states[j]); - for (i = 0; i < s->slice_count; i++) { - FFV1Context *sf = s->slice_context[i]; - av_freep(&sf->rc_stat2[j]); - } - av_freep(&s->rc_stat2[j]); - } - - for (i = 0; i < s->slice_count; i++) - av_freep(&s->slice_context[i]); - - return 0; -} |
