| /* |
| * 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 "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; |
| unsigned a; |
| e = 0; |
| while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10 |
| e++; |
| if (e > 31) |
| return AVERROR_INVALIDDATA; |
| } |
| |
| 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); |
| ff_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); |
| |
| v ^= ((2 * state->drift + state->count) >> 31); |
| |
| ret = fold(v + state->bias, bits); |
| |
| update_vlc_state(state, v); |
| |
| return ret; |
| } |
| |
| static int is_input_end(FFV1Context *s) |
| { |
| if (s->ac != AC_GOLOMB_RICE) { |
| RangeCoder *const c = &s->c; |
| if (c->overread > MAX_OVERREAD) |
| return AVERROR_INVALIDDATA; |
| } else { |
| if (get_bits_left(&s->gb) < 1) |
| return AVERROR_INVALIDDATA; |
| } |
| return 0; |
| } |
| |
| #define TYPE int16_t |
| #define RENAME(name) name |
| #include "ffv1dec_template.c" |
| #undef TYPE |
| #undef RENAME |
| |
| #define TYPE int32_t |
| #define RENAME(name) name ## 32 |
| #include "ffv1dec_template.c" |
| |
| static int decode_plane(FFV1Context *s, uint8_t *src, |
| int w, int h, int stride, int plane_index, |
| int pixel_stride) |
| { |
| 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]; |
| |
| if (s->avctx->bits_per_raw_sample <= 8) { |
| int ret = decode_line(s, w, sample, plane_index, 8); |
| if (ret < 0) |
| return ret; |
| for (x = 0; x < w; x++) |
| src[x*pixel_stride + stride * y] = sample[1][x]; |
| } else { |
| int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample); |
| if (ret < 0) |
| return ret; |
| if (s->packed_at_lsb) { |
| for (x = 0; x < w; x++) { |
| ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x]; |
| } |
| } else { |
| for (x = 0; x < w; x++) { |
| ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16); |
| } |
| } |
| } |
| } |
| return 0; |
| } |
| |
| 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 (av_image_check_sar(f->width, f->height, |
| f->cur->sample_aspect_ratio) < 0) { |
| av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", |
| f->cur->sample_aspect_ratio.num, |
| f->cur->sample_aspect_ratio.den); |
| f->cur->sample_aspect_ratio = (AVRational){ 0, 1 }; |
| } |
| |
| 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; |
| 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_array(CONTEXT_SIZE, psrc->context_count); |
| memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count); |
| } else { |
| pdst->vlc_state = av_malloc_array(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 (ff_ffv1_init_slice_state(f, fs) < 0) |
| return AVERROR(ENOMEM); |
| if (decode_slice_header(f, fs) < 0) { |
| fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0; |
| fs->slice_damaged = 1; |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0) |
| return ret; |
| if (f->cur->key_frame || fs->slice_reset_contexts) |
| ff_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 == AC_GOLOMB_RICE) { |
| 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 && (f->chroma_planes || !fs->transparency)) { |
| const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift); |
| const int chroma_height = AV_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, 1); |
| |
| if (f->chroma_planes) { |
| decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1); |
| decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1); |
| } |
| if (fs->transparency) |
| decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1); |
| } else if (f->colorspace == 0) { |
| decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2); |
| decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2); |
| } else if (f->use32bit) { |
| uint8_t *planes[4] = { 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], |
| p->data[3] + ps * x + y * p->linesize[3] }; |
| decode_rgb_frame32(fs, planes, width, height, p->linesize); |
| } else { |
| uint8_t *planes[4] = { 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], |
| p->data[3] + ps * x + y * p->linesize[3] }; |
| decode_rgb_frame(fs, planes, width, height, p->linesize); |
| } |
| if (fs->ac != AC_GOLOMB_RICE && 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) + 1U; |
| |
| if (len > 128 - i || !len) |
| 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++) { |
| int ret = read_quant_table(c, quant_table[i], context_count); |
| if (ret < 0) |
| return ret; |
| context_count *= ret; |
| 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]; |
| unsigned crc = 0; |
| |
| 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); |
| if (f->micro_version < 0) |
| return AVERROR_INVALIDDATA; |
| } |
| f->ac = get_symbol(c, state, 0); |
| |
| if (f->ac == AC_RANGE_CUSTOM_TAB) { |
| 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->chroma_h_shift > 4U || f->chroma_v_shift > 4U) { |
| av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n", |
| f->chroma_h_shift, f->chroma_v_shift); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| 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 || !f->quant_table_count) { |
| av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count); |
| f->quant_table_count = 0; |
| 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 = ff_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 || f->avctx->extradata_size < 4) { |
| av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v); |
| return AVERROR_INVALIDDATA; |
| } |
| crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4); |
| } |
| |
| 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 CRC:0x%08X\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, |
| crc |
| ); |
| 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 = get_symbol(c, state, 0); |
| |
| if (f->ac == AC_RANGE_CUSTOM_TAB) { |
| for (i = 1; i < 256; i++) { |
| int st = get_symbol(c, state, 1) + c->one_state[i]; |
| if (st < 1 || st > 255) { |
| av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st); |
| return AVERROR_INVALIDDATA; |
| } |
| f->state_transition[i] = st; |
| } |
| } |
| |
| 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 (colorspace == 0 && f->avctx->skip_alpha) |
| transparency = 0; |
| |
| 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; |
| } |
| } |
| |
| if (chroma_h_shift > 4U || chroma_v_shift > 4U) { |
| av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n", |
| chroma_h_shift, chroma_v_shift); |
| 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->transparency && !f->chroma_planes) { |
| if (f->avctx->bits_per_raw_sample <= 8) |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY8; |
| else if (f->avctx->bits_per_raw_sample == 9) { |
| f->packed_at_lsb = 1; |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY9; |
| } else if (f->avctx->bits_per_raw_sample == 10) { |
| f->packed_at_lsb = 1; |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY10; |
| } else if (f->avctx->bits_per_raw_sample == 12) { |
| f->packed_at_lsb = 1; |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY12; |
| } else if (f->avctx->bits_per_raw_sample == 16) { |
| f->packed_at_lsb = 1; |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; |
| } else if (f->avctx->bits_per_raw_sample < 16) { |
| f->avctx->pix_fmt = AV_PIX_FMT_GRAY16; |
| } else |
| return AVERROR(ENOSYS); |
| } else if (f->transparency && !f->chroma_planes) { |
| if (f->avctx->bits_per_raw_sample <= 8) |
| f->avctx->pix_fmt = AV_PIX_FMT_YA8; |
| else |
| return AVERROR(ENOSYS); |
| } 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 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; 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 == 12 && !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_YUV444P12; break; |
| case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break; |
| case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break; |
| case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break; |
| } |
| } else if (f->avctx->bits_per_raw_sample == 14 && !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_YUV444P14; break; |
| case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break; |
| case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break; |
| } |
| } else if (f->avctx->bits_per_raw_sample == 16 && !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_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){ |
| f->packed_at_lsb = 1; |
| 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 <= 8 && !f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_0RGB32; |
| else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRP9; |
| else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRP10; |
| else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10; |
| else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRP12; |
| else if (f->avctx->bits_per_raw_sample == 12 && f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12; |
| else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRP14; |
| else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) { |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRP16; |
| f->use32bit = 1; |
| } |
| else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) { |
| f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16; |
| f->use32bit = 1; |
| } |
| } 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); |
| } |
| |
| ff_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; |
| } |
| f->slice_count = f->max_slice_count; |
| } 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 + 5*!!f->ec < 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 || f->slice_count > f->max_slice_count) { |
| av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_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 = ff_ffv1_common_init(avctx)) < 0) |
| return ret; |
| |
| if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0) |
| return ret; |
| |
| if ((ret = ff_ffv1_init_slice_contexts(f)) < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) |
| { |
| 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; |
| 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"); |
| ff_thread_report_progress(&f->picture, INT_MAX, 0); |
| 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, "slice 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 (avctx->debug & FF_DEBUG_PICT_INFO) { |
| av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4)); |
| } |
| } |
| |
| if (i) { |
| ff_init_range_decoder(&fs->c, buf_p, v); |
| } else |
| fs->c.bytestream_end = 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 AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); |
| const uint8_t *src[4]; |
| uint8_t *dst[4]; |
| ff_thread_await_progress(&f->last_picture, INT_MAX, 0); |
| for (j = 0; j < desc->nb_components; j++) { |
| int pixshift = desc->comp[j].depth > 8; |
| 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) << pixshift); |
| src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] * |
| (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift); |
| |
| } |
| if (desc->flags & AV_PIX_FMT_FLAG_PAL || |
| desc->flags & FF_PSEUDOPAL) { |
| dst[1] = p->data[1]; |
| src[1] = f->last_picture.f->data[1]; |
| } |
| av_image_copy(dst, p->linesize, 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 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; |
| } |
| } |
| |
| #if HAVE_THREADS |
| 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; |
| |
| { |
| ThreadFrame picture = fdst->picture, last_picture = fdst->last_picture; |
| uint8_t (*initial_states[MAX_QUANT_TABLES])[32]; |
| struct FFV1Context *slice_context[MAX_SLICES]; |
| memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states)); |
| memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context)); |
| |
| memcpy(fdst, fsrc, sizeof(*fdst)); |
| memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states)); |
| memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context)); |
| fdst->picture = picture; |
| fdst->last_picture = 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->max_slice_count == fsrc->max_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; |
| } |
| #endif |
| |
| 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 = ff_ffv1_close, |
| .decode = decode_frame, |
| .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), |
| .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ | |
| AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS, |
| .caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_ALLOCATE_PROGRESS, |
| }; |
