diff options
Diffstat (limited to 'ffmpeg/libavcodec/ffv1dec.c')
| -rw-r--r-- | ffmpeg/libavcodec/ffv1dec.c | 1086 |
1 files changed, 0 insertions, 1086 deletions
diff --git a/ffmpeg/libavcodec/ffv1dec.c b/ffmpeg/libavcodec/ffv1dec.c deleted file mode 100644 index d7dd110..0000000 --- a/ffmpeg/libavcodec/ffv1dec.c +++ /dev/null @@ -1,1086 +0,0 @@ -/* - * FFV1 decoder - * - * Copyright (c) 2003-2013 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) decoder - */ - -#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 "get_bits.h" -#include "rangecoder.h" -#include "golomb.h" -#include "mathops.h" -#include "ffv1.h" - -static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, - int is_signed) -{ - if (get_rac(c, state + 0)) - return 0; - else { - int i, e, a; - e = 0; - while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10 - e++; - - a = 1; - for (i = e - 1; i >= 0; i--) - a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31 - - e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21 - return (a ^ e) - e; - } -} - -static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed) -{ - return get_symbol_inline(c, state, is_signed); -} - -static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state, - int bits) -{ - int k, i, v, ret; - - i = state->count; - k = 0; - while (i < state->error_sum) { // FIXME: optimize - k++; - i += i; - } - - v = get_sr_golomb(gb, k, 12, bits); - av_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d", - v, state->bias, state->error_sum, state->drift, state->count, k); - -#if 0 // JPEG LS - if (k == 0 && 2 * state->drift <= -state->count) - v ^= (-1); -#else - v ^= ((2 * state->drift + state->count) >> 31); -#endif - - ret = fold(v + state->bias, bits); - - update_vlc_state(state, v); - - return ret; -} - -static av_always_inline void decode_line(FFV1Context *s, int w, - int16_t *sample[2], - int plane_index, int bits) -{ - PlaneContext *const p = &s->plane[plane_index]; - RangeCoder *const c = &s->c; - int x; - int run_count = 0; - int run_mode = 0; - int run_index = s->run_index; - - if (s->slice_coding_mode == 1) { - int i; - for (x = 0; x < w; x++) { - int v = 0; - for (i=0; i<bits; i++) { - uint8_t state = 128; - v += v + get_rac(c, &state); - } - sample[1][x] = v; - } - return; - } - - for (x = 0; x < w; x++) { - int diff, context, sign; - - context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x); - if (context < 0) { - context = -context; - sign = 1; - } else - sign = 0; - - av_assert2(context < p->context_count); - - if (s->ac) { - diff = get_symbol_inline(c, p->state[context], 1); - } else { - if (context == 0 && run_mode == 0) - run_mode = 1; - - if (run_mode) { - if (run_count == 0 && run_mode == 1) { - if (get_bits1(&s->gb)) { - run_count = 1 << ff_log2_run[run_index]; - if (x + run_count <= w) - run_index++; - } else { - if (ff_log2_run[run_index]) - run_count = get_bits(&s->gb, ff_log2_run[run_index]); - else - run_count = 0; - if (run_index) - run_index--; - run_mode = 2; - } - } - run_count--; - if (run_count < 0) { - run_mode = 0; - run_count = 0; - diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], - bits); - if (diff >= 0) - diff++; - } else - diff = 0; - } else - diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits); - - av_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n", - run_count, run_index, run_mode, x, get_bits_count(&s->gb)); - } - - if (sign) - diff = -diff; - - sample[1][x] = (predict(sample[1] + x, sample[0] + x) + diff) & - ((1 << bits) - 1); - } - s->run_index = run_index; -} - -static void decode_plane(FFV1Context *s, uint8_t *src, - int w, int h, int stride, int plane_index) -{ - int x, y; - int16_t *sample[2]; - sample[0] = s->sample_buffer + 3; - sample[1] = s->sample_buffer + w + 6 + 3; - - s->run_index = 0; - - memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer)); - - for (y = 0; y < h; y++) { - int16_t *temp = sample[0]; // FIXME: try a normal buffer - - sample[0] = sample[1]; - sample[1] = temp; - - sample[1][-1] = sample[0][0]; - sample[0][w] = sample[0][w - 1]; - -// { START_TIMER - if (s->avctx->bits_per_raw_sample <= 8) { - decode_line(s, w, sample, plane_index, 8); - for (x = 0; x < w; x++) - src[x + stride * y] = sample[1][x]; - } else { - decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); - if (s->packed_at_lsb) { - for (x = 0; x < w; x++) { - ((uint16_t*)(src + stride*y))[x] = sample[1][x]; - } - } else { - for (x = 0; x < w; x++) { - ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample); - } - } - } -// STOP_TIMER("decode-line") } - } -} - -static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3]) -{ - int x, y, p; - int16_t *sample[4][2]; - int lbd = s->avctx->bits_per_raw_sample <= 8; - int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8; - int offset = 1 << bits; - - for (x = 0; x < 4; x++) { - sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3; - sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3; - } - - s->run_index = 0; - - memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer)); - - for (y = 0; y < h; y++) { - for (p = 0; p < 3 + s->transparency; p++) { - int16_t *temp = sample[p][0]; // FIXME: try a normal buffer - - sample[p][0] = sample[p][1]; - sample[p][1] = temp; - - sample[p][1][-1]= sample[p][0][0 ]; - sample[p][0][ w]= sample[p][0][w-1]; - if (lbd && s->slice_coding_mode == 0) - decode_line(s, w, sample[p], (p + 1)/2, 9); - else - decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1)); - } - for (x = 0; x < w; x++) { - int g = sample[0][1][x]; - int b = sample[1][1][x]; - int r = sample[2][1][x]; - int a = sample[3][1][x]; - - if (s->slice_coding_mode != 1) { - b -= offset; - r -= offset; - g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2; - b += g; - r += g; - } - - if (lbd) - *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24); - else { - *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b; - *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g; - *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r; - } - } - } -} - -static int decode_slice_header(FFV1Context *f, FFV1Context *fs) -{ - RangeCoder *c = &fs->c; - uint8_t state[CONTEXT_SIZE]; - unsigned ps, i, context_count; - memset(state, 128, sizeof(state)); - - av_assert0(f->version > 2); - - fs->slice_x = get_symbol(c, state, 0) * f->width ; - fs->slice_y = get_symbol(c, state, 0) * f->height; - fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x; - fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y; - - fs->slice_x /= f->num_h_slices; - fs->slice_y /= f->num_v_slices; - fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x; - fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y; - if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height) - return -1; - if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width - || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) - return -1; - - for (i = 0; i < f->plane_count; i++) { - PlaneContext * const p = &fs->plane[i]; - int idx = get_symbol(c, state, 0); - if (idx > (unsigned)f->quant_table_count) { - av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n"); - return -1; - } - p->quant_table_index = idx; - memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table)); - context_count = f->context_count[idx]; - - if (p->context_count < context_count) { - av_freep(&p->state); - av_freep(&p->vlc_state); - } - p->context_count = context_count; - } - - ps = get_symbol(c, state, 0); - if (ps == 1) { - f->cur->interlaced_frame = 1; - f->cur->top_field_first = 1; - } else if (ps == 2) { - f->cur->interlaced_frame = 1; - f->cur->top_field_first = 0; - } else if (ps == 3) { - f->cur->interlaced_frame = 0; - } - f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0); - f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0); - if (fs->version > 3) { - fs->slice_reset_contexts = get_rac(c, state); - fs->slice_coding_mode = get_symbol(c, state, 0); - if (fs->slice_coding_mode != 1) { - fs->slice_rct_by_coef = get_symbol(c, state, 0); - fs->slice_rct_ry_coef = get_symbol(c, state, 0); - if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) { - av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n"); - return AVERROR_INVALIDDATA; - } - } - } - return 0; -} - -static int decode_slice(AVCodecContext *c, void *arg) -{ - FFV1Context *fs = *(void **)arg; - FFV1Context *f = fs->avctx->priv_data; - int width, height, x, y, ret; - const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1; - AVFrame * const p = f->cur; - int i, si; - - for( si=0; fs != f->slice_context[si]; si ++) - ; - - if(f->fsrc && !p->key_frame) - ff_thread_await_progress(&f->last_picture, si, 0); - - if(f->fsrc && !p->key_frame) { - FFV1Context *fssrc = f->fsrc->slice_context[si]; - FFV1Context *fsdst = f->slice_context[si]; - av_assert1(fsdst->plane_count == fssrc->plane_count); - av_assert1(fsdst == fs); - - if (!p->key_frame) - fsdst->slice_damaged |= fssrc->slice_damaged; - - for (i = 0; i < f->plane_count; i++) { - PlaneContext *psrc = &fssrc->plane[i]; - PlaneContext *pdst = &fsdst->plane[i]; - - av_free(pdst->state); - av_free(pdst->vlc_state); - memcpy(pdst, psrc, sizeof(*pdst)); - pdst->state = NULL; - pdst->vlc_state = NULL; - - if (fssrc->ac) { - pdst->state = av_malloc(CONTEXT_SIZE * psrc->context_count); - memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count); - } else { - pdst->vlc_state = av_malloc(sizeof(*pdst->vlc_state) * psrc->context_count); - memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count); - } - } - } - - fs->slice_rct_by_coef = 1; - fs->slice_rct_ry_coef = 1; - - if (f->version > 2) { - if (ffv1_init_slice_state(f, fs) < 0) - return AVERROR(ENOMEM); - if (decode_slice_header(f, fs) < 0) { - fs->slice_damaged = 1; - return AVERROR_INVALIDDATA; - } - } - if ((ret = ffv1_init_slice_state(f, fs)) < 0) - return ret; - if (f->cur->key_frame || fs->slice_reset_contexts) - ffv1_clear_slice_state(f, fs); - - width = fs->slice_width; - height = fs->slice_height; - x = fs->slice_x; - y = fs->slice_y; - - if (!fs->ac) { - if (f->version == 3 && f->micro_version > 1 || f->version > 3) - get_rac(&fs->c, (uint8_t[]) { 129 }); - fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0; - init_get_bits(&fs->gb, - fs->c.bytestream_start + fs->ac_byte_count, - (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8); - } - - av_assert1(width && height); - if (f->colorspace == 0) { - const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift); - const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift); - const int cx = x >> f->chroma_h_shift; - const int cy = y >> f->chroma_v_shift; - decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0); - - if (f->chroma_planes) { - decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1); - decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1); - } - if (fs->transparency) - decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], 2); - } else { - uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0], - p->data[1] + ps * x + y * p->linesize[1], - p->data[2] + ps * x + y * p->linesize[2] }; - decode_rgb_frame(fs, planes, width, height, p->linesize); - } - if (fs->ac && f->version > 2) { - int v; - get_rac(&fs->c, (uint8_t[]) { 129 }); - v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec; - if (v) { - av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v); - fs->slice_damaged = 1; - } - } - - emms_c(); - - ff_thread_report_progress(&f->picture, si, 0); - - return 0; -} - -static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale) -{ - int v; - int i = 0; - uint8_t state[CONTEXT_SIZE]; - - memset(state, 128, sizeof(state)); - - for (v = 0; i < 128; v++) { - unsigned len = get_symbol(c, state, 0) + 1; - - if (len > 128 - i) - return AVERROR_INVALIDDATA; - - while (len--) { - quant_table[i] = scale * v; - i++; - } - } - - for (i = 1; i < 128; i++) - quant_table[256 - i] = -quant_table[i]; - quant_table[128] = -quant_table[127]; - - return 2 * v - 1; -} - -static int read_quant_tables(RangeCoder *c, - int16_t quant_table[MAX_CONTEXT_INPUTS][256]) -{ - int i; - int context_count = 1; - - for (i = 0; i < 5; i++) { - context_count *= read_quant_table(c, quant_table[i], context_count); - if (context_count > 32768U) { - return AVERROR_INVALIDDATA; - } - } - return (context_count + 1) / 2; -} - -static int read_extra_header(FFV1Context *f) -{ - RangeCoder *const c = &f->c; - uint8_t state[CONTEXT_SIZE]; - int i, j, k, ret; - uint8_t state2[32][CONTEXT_SIZE]; - - memset(state2, 128, sizeof(state2)); - memset(state, 128, sizeof(state)); - - ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size); - ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); - - f->version = get_symbol(c, state, 0); - if (f->version < 2) { - av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n"); - return AVERROR_INVALIDDATA; - } - if (f->version > 2) { - c->bytestream_end -= 4; - f->micro_version = get_symbol(c, state, 0); - } - f->ac = f->avctx->coder_type = get_symbol(c, state, 0); - if (f->ac > 1) { - for (i = 1; i < 256; i++) - f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; - } - - f->colorspace = get_symbol(c, state, 0); //YUV cs type - f->avctx->bits_per_raw_sample = get_symbol(c, state, 0); - f->chroma_planes = get_rac(c, state); - f->chroma_h_shift = get_symbol(c, state, 0); - f->chroma_v_shift = get_symbol(c, state, 0); - f->transparency = get_rac(c, state); - f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency; - f->num_h_slices = 1 + get_symbol(c, state, 0); - f->num_v_slices = 1 + get_symbol(c, state, 0); - - if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices || - f->num_v_slices > (unsigned)f->height || !f->num_v_slices - ) { - av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n"); - return AVERROR_INVALIDDATA; - } - - f->quant_table_count = get_symbol(c, state, 0); - if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES) - return AVERROR_INVALIDDATA; - - for (i = 0; i < f->quant_table_count; i++) { - f->context_count[i] = read_quant_tables(c, f->quant_tables[i]); - if (f->context_count[i] < 0) { - av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); - return AVERROR_INVALIDDATA; - } - } - if ((ret = ffv1_allocate_initial_states(f)) < 0) - return ret; - - for (i = 0; i < f->quant_table_count; i++) - if (get_rac(c, state)) { - for (j = 0; j < f->context_count[i]; j++) - for (k = 0; k < CONTEXT_SIZE; k++) { - int pred = j ? f->initial_states[i][j - 1][k] : 128; - f->initial_states[i][j][k] = - (pred + get_symbol(c, state2[k], 1)) & 0xFF; - } - } - - if (f->version > 2) { - f->ec = get_symbol(c, state, 0); - if (f->micro_version > 2) - f->intra = get_symbol(c, state, 0); - } - - if (f->version > 2) { - unsigned v; - v = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, - f->avctx->extradata, f->avctx->extradata_size); - if (v) { - av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v); - return AVERROR_INVALIDDATA; - } - } - - if (f->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(f->avctx, AV_LOG_DEBUG, - "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d\n", - f->version, f->micro_version, - f->ac, - f->colorspace, - f->avctx->bits_per_raw_sample, - f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift, - f->transparency, - f->num_h_slices, f->num_v_slices, - f->quant_table_count, - f->ec, - f->intra - ); - return 0; -} - -static int read_header(FFV1Context *f) -{ - uint8_t state[CONTEXT_SIZE]; - int i, j, context_count = -1; //-1 to avoid warning - RangeCoder *const c = &f->slice_context[0]->c; - - memset(state, 128, sizeof(state)); - - if (f->version < 2) { - int chroma_planes, chroma_h_shift, chroma_v_shift, transparency, colorspace, bits_per_raw_sample; - unsigned v= get_symbol(c, state, 0); - if (v >= 2) { - av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v); - return AVERROR_INVALIDDATA; - } - f->version = v; - f->ac = f->avctx->coder_type = get_symbol(c, state, 0); - if (f->ac > 1) { - for (i = 1; i < 256; i++) - f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i]; - } - - colorspace = get_symbol(c, state, 0); //YUV cs type - bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample; - chroma_planes = get_rac(c, state); - chroma_h_shift = get_symbol(c, state, 0); - chroma_v_shift = get_symbol(c, state, 0); - transparency = get_rac(c, state); - - if (f->plane_count) { - if ( colorspace != f->colorspace - || bits_per_raw_sample != f->avctx->bits_per_raw_sample - || chroma_planes != f->chroma_planes - || chroma_h_shift!= f->chroma_h_shift - || chroma_v_shift!= f->chroma_v_shift - || transparency != f->transparency) { - av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n"); - return AVERROR_INVALIDDATA; - } - } - - f->colorspace = colorspace; - f->avctx->bits_per_raw_sample = bits_per_raw_sample; - f->chroma_planes = chroma_planes; - f->chroma_h_shift = chroma_h_shift; - f->chroma_v_shift = chroma_v_shift; - f->transparency = transparency; - - f->plane_count = 2 + f->transparency; - } - - if (f->colorspace == 0) { - if (f->avctx->skip_alpha) f->transparency = 0; - if (!f->transparency && !f->chroma_planes) { - if (f->avctx->bits_per_raw_sample <= 8) - f->avctx->pix_fmt = AV_PIX_FMT_GRAY8; - else - f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; - } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) { - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break; - case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break; - case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break; - case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break; - } - } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) { - switch(16*f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break; - } - } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) { - f->packed_at_lsb = 1; - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break; - } - } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) { - f->packed_at_lsb = 1; - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break; - } - } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) { - f->packed_at_lsb = 1; - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break; - } - } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) { - f->packed_at_lsb = 1; - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break; - } - } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){ - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break; - } - } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){ - switch(16 * f->chroma_h_shift + f->chroma_v_shift) { - case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break; - case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break; - case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break; - } - } - } else if (f->colorspace == 1) { - if (f->chroma_h_shift || f->chroma_v_shift) { - av_log(f->avctx, AV_LOG_ERROR, - "chroma subsampling not supported in this colorspace\n"); - return AVERROR(ENOSYS); - } - if ( f->avctx->bits_per_raw_sample == 9) - f->avctx->pix_fmt = AV_PIX_FMT_GBRP9; - else if (f->avctx->bits_per_raw_sample == 10) - f->avctx->pix_fmt = AV_PIX_FMT_GBRP10; - else if (f->avctx->bits_per_raw_sample == 12) - f->avctx->pix_fmt = AV_PIX_FMT_GBRP12; - else if (f->avctx->bits_per_raw_sample == 14) - f->avctx->pix_fmt = AV_PIX_FMT_GBRP14; - else - if (f->transparency) f->avctx->pix_fmt = AV_PIX_FMT_RGB32; - else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32; - } else { - av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n"); - return AVERROR(ENOSYS); - } - if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) { - av_log(f->avctx, AV_LOG_ERROR, "format not supported\n"); - return AVERROR(ENOSYS); - } - - av_dlog(f->avctx, "%d %d %d\n", - f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt); - if (f->version < 2) { - context_count = read_quant_tables(c, f->quant_table); - if (context_count < 0) { - av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n"); - return AVERROR_INVALIDDATA; - } - } else if (f->version < 3) { - f->slice_count = get_symbol(c, state, 0); - } else { - const uint8_t *p = c->bytestream_end; - for (f->slice_count = 0; - f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start; - f->slice_count++) { - int trailer = 3 + 5*!!f->ec; - int size = AV_RB24(p-trailer); - if (size + trailer > p - c->bytestream_start) - break; - p -= size + trailer; - } - } - if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) { - av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count); - return AVERROR_INVALIDDATA; - } - - for (j = 0; j < f->slice_count; j++) { - FFV1Context *fs = f->slice_context[j]; - fs->ac = f->ac; - fs->packed_at_lsb = f->packed_at_lsb; - - fs->slice_damaged = 0; - - if (f->version == 2) { - fs->slice_x = get_symbol(c, state, 0) * f->width ; - fs->slice_y = get_symbol(c, state, 0) * f->height; - fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x; - fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y; - - fs->slice_x /= f->num_h_slices; - fs->slice_y /= f->num_v_slices; - fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x; - fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y; - if ((unsigned)fs->slice_width > f->width || - (unsigned)fs->slice_height > f->height) - return AVERROR_INVALIDDATA; - if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width - || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height) - return AVERROR_INVALIDDATA; - } - - for (i = 0; i < f->plane_count; i++) { - PlaneContext *const p = &fs->plane[i]; - - if (f->version == 2) { - int idx = get_symbol(c, state, 0); - if (idx > (unsigned)f->quant_table_count) { - av_log(f->avctx, AV_LOG_ERROR, - "quant_table_index out of range\n"); - return AVERROR_INVALIDDATA; - } - p->quant_table_index = idx; - memcpy(p->quant_table, f->quant_tables[idx], - sizeof(p->quant_table)); - context_count = f->context_count[idx]; - } else { - memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table)); - } - - if (f->version <= 2) { - av_assert0(context_count >= 0); - if (p->context_count < context_count) { - av_freep(&p->state); - av_freep(&p->vlc_state); - } - p->context_count = context_count; - } - } - } - return 0; -} - -static av_cold int decode_init(AVCodecContext *avctx) -{ - FFV1Context *f = avctx->priv_data; - int ret; - - if ((ret = ffv1_common_init(avctx)) < 0) - return ret; - - if (avctx->extradata && (ret = read_extra_header(f)) < 0) - return ret; - - if ((ret = ffv1_init_slice_contexts(f)) < 0) - return ret; - - avctx->internal->allocate_progress = 1; - - return 0; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - FFV1Context *f = avctx->priv_data; - RangeCoder *const c = &f->slice_context[0]->c; - int i, ret; - uint8_t keystate = 128; - const uint8_t *buf_p; - AVFrame *p; - - if (f->last_picture.f) - ff_thread_release_buffer(avctx, &f->last_picture); - FFSWAP(ThreadFrame, f->picture, f->last_picture); - - f->cur = p = f->picture.f; - - if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) { - /* we have interlaced material flagged in container */ - p->interlaced_frame = 1; - if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB) - p->top_field_first = 1; - } - - f->avctx = avctx; - ff_init_range_decoder(c, buf, buf_size); - ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8); - - p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P - if (get_rac(c, &keystate)) { - p->key_frame = 1; - f->key_frame_ok = 0; - if ((ret = read_header(f)) < 0) - return ret; - f->key_frame_ok = 1; - } else { - if (!f->key_frame_ok) { - av_log(avctx, AV_LOG_ERROR, - "Cannot decode non-keyframe without valid keyframe\n"); - return AVERROR_INVALIDDATA; - } - p->key_frame = 0; - } - - if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0) - return ret; - - if (avctx->debug & FF_DEBUG_PICT_INFO) - av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n", - f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample); - - ff_thread_finish_setup(avctx); - - buf_p = buf + buf_size; - for (i = f->slice_count - 1; i >= 0; i--) { - FFV1Context *fs = f->slice_context[i]; - int trailer = 3 + 5*!!f->ec; - int v; - - if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer; - else v = buf_p - c->bytestream_start; - if (buf_p - c->bytestream_start < v) { - av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n"); - return AVERROR_INVALIDDATA; - } - buf_p -= v; - - if (f->ec) { - unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v); - if (crc) { - int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts; - av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc); - if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) { - av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase)); - } else if (ts != AV_NOPTS_VALUE) { - av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts); - } else { - av_log(f->avctx, AV_LOG_ERROR, "\n"); - } - fs->slice_damaged = 1; - } - } - - if (i) { - ff_init_range_decoder(&fs->c, buf_p, v); - } else - fs->c.bytestream_end = (uint8_t *)(buf_p + v); - - fs->avctx = avctx; - fs->cur = p; - } - - avctx->execute(avctx, - decode_slice, - &f->slice_context[0], - NULL, - f->slice_count, - sizeof(void*)); - - for (i = f->slice_count - 1; i >= 0; i--) { - FFV1Context *fs = f->slice_context[i]; - int j; - if (fs->slice_damaged && f->last_picture.f->data[0]) { - const uint8_t *src[4]; - uint8_t *dst[4]; - ff_thread_await_progress(&f->last_picture, INT_MAX, 0); - for (j = 0; j < 4; j++) { - int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0; - int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0; - dst[j] = p->data[j] + p->linesize[j] * - (fs->slice_y >> sv) + (fs->slice_x >> sh); - src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] * - (fs->slice_y >> sv) + (fs->slice_x >> sh); - } - av_image_copy(dst, p->linesize, (const uint8_t **)src, - f->last_picture.f->linesize, - avctx->pix_fmt, - fs->slice_width, - fs->slice_height); - } - } - ff_thread_report_progress(&f->picture, INT_MAX, 0); - - f->picture_number++; - - if (f->last_picture.f) - ff_thread_release_buffer(avctx, &f->last_picture); - f->cur = NULL; - if ((ret = av_frame_ref(data, f->picture.f)) < 0) - return ret; - - *got_frame = 1; - - return buf_size; -} - -static int init_thread_copy(AVCodecContext *avctx) -{ - FFV1Context *f = avctx->priv_data; - int i, ret; - - f->picture.f = NULL; - f->last_picture.f = NULL; - f->sample_buffer = NULL; - f->slice_count = 0; - - for (i = 0; i < f->quant_table_count; i++) { - av_assert0(f->version > 1); - f->initial_states[i] = av_memdup(f->initial_states[i], - f->context_count[i] * sizeof(*f->initial_states[i])); - } - - f->picture.f = av_frame_alloc(); - f->last_picture.f = av_frame_alloc(); - - if ((ret = ffv1_init_slice_contexts(f)) < 0) - return ret; - - return 0; -} - -static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc) -{ - fsdst->version = fsrc->version; - fsdst->micro_version = fsrc->micro_version; - fsdst->chroma_planes = fsrc->chroma_planes; - fsdst->chroma_h_shift = fsrc->chroma_h_shift; - fsdst->chroma_v_shift = fsrc->chroma_v_shift; - fsdst->transparency = fsrc->transparency; - fsdst->plane_count = fsrc->plane_count; - fsdst->ac = fsrc->ac; - fsdst->colorspace = fsrc->colorspace; - - fsdst->ec = fsrc->ec; - fsdst->intra = fsrc->intra; - fsdst->slice_damaged = fssrc->slice_damaged; - fsdst->key_frame_ok = fsrc->key_frame_ok; - - fsdst->bits_per_raw_sample = fsrc->bits_per_raw_sample; - fsdst->packed_at_lsb = fsrc->packed_at_lsb; - fsdst->slice_count = fsrc->slice_count; - if (fsrc->version<3){ - fsdst->slice_x = fssrc->slice_x; - fsdst->slice_y = fssrc->slice_y; - fsdst->slice_width = fssrc->slice_width; - fsdst->slice_height = fssrc->slice_height; - } -} - -static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src) -{ - FFV1Context *fsrc = src->priv_data; - FFV1Context *fdst = dst->priv_data; - int i, ret; - - if (dst == src) - return 0; - - { - FFV1Context bak = *fdst; - memcpy(fdst, fsrc, sizeof(*fdst)); - memcpy(fdst->initial_states, bak.initial_states, sizeof(fdst->initial_states)); - memcpy(fdst->slice_context, bak.slice_context , sizeof(fdst->slice_context)); - fdst->picture = bak.picture; - fdst->last_picture = bak.last_picture; - for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) { - FFV1Context *fssrc = fsrc->slice_context[i]; - FFV1Context *fsdst = fdst->slice_context[i]; - copy_fields(fsdst, fssrc, fsrc); - } - av_assert0(!fdst->plane[0].state); - av_assert0(!fdst->sample_buffer); - } - - av_assert1(fdst->slice_count == fsrc->slice_count); - - - ff_thread_release_buffer(dst, &fdst->picture); - if (fsrc->picture.f->data[0]) { - if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0) - return ret; - } - - fdst->fsrc = fsrc; - - return 0; -} - -AVCodec ff_ffv1_decoder = { - .name = "ffv1", - .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_FFV1, - .priv_data_size = sizeof(FFV1Context), - .init = decode_init, - .close = ffv1_close, - .decode = decode_frame, - .init_thread_copy = ONLY_IF_THREADS_ENABLED(init_thread_copy), - .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), - .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ | - CODEC_CAP_FRAME_THREADS | CODEC_CAP_SLICE_THREADS, -}; |