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/* |
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* Canopus HQ/HQA decoder |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include "libavutil/attributes.h" |
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#include "libavutil/intreadwrite.h" |
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#include "avcodec.h" |
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#include "canopus.h" |
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#include "get_bits.h" |
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#include "internal.h" |
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#include "hq_hqa.h" |
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#include "hq_hqadsp.h" |
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/* HQ/HQA slices are a set of macroblocks belonging to a frame, and |
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* they usually form a pseudorandom pattern (probably because it is |
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* nicer to display on partial decode). |
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* |
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* For HQA it just happens that each slice is on every 8th macroblock, |
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* but they can be on any frame width like |
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* X.......X. |
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* ......X... |
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* ....X..... |
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* ..X....... |
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* etc. |
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* |
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* The original decoder has special handling for edge macroblocks, |
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* while lavc simply aligns coded_width and coded_height. |
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*/ |
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221520 |
static inline void put_blocks(HQContext *c, AVFrame *pic, |
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int plane, int x, int y, int ilace, |
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int16_t *block0, int16_t *block1) |
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{ |
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221520 |
uint8_t *p = pic->data[plane] + x; |
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221520 |
c->hqhqadsp.idct_put(p + y * pic->linesize[plane], |
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221520 |
pic->linesize[plane] << ilace, block0); |
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221520 |
c->hqhqadsp.idct_put(p + (y + (ilace ? 1 : 8)) * pic->linesize[plane], |
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✓✓ |
221520 |
pic->linesize[plane] << ilace, block1); |
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221520 |
} |
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365300 |
static int hq_decode_block(HQContext *c, GetBitContext *gb, int16_t block[64], |
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int qsel, int is_chroma, int is_hqa) |
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{ |
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const int32_t *q; |
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365300 |
int val, pos = 1; |
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365300 |
memset(block, 0, 64 * sizeof(*block)); |
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✓✓ |
365300 |
if (!is_hqa) { |
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247200 |
block[0] = get_sbits(gb, 9) * 64; |
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247200 |
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)]; |
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} else { |
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118100 |
q = ff_hq_quants[qsel][is_chroma][get_bits(gb, 2)]; |
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118100 |
block[0] = get_sbits(gb, 9) * 64; |
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} |
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for (;;) { |
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5841374 |
val = get_vlc2(gb, c->hq_ac_vlc.table, 9, 2); |
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✗✓ |
5841374 |
if (val < 0) |
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return AVERROR_INVALIDDATA; |
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5841374 |
pos += ff_hq_ac_skips[val]; |
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✓✓ |
5841374 |
if (pos >= 64) |
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365300 |
break; |
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5476074 |
block[ff_zigzag_direct[pos]] = (int)(ff_hq_ac_syms[val] * (unsigned)q[pos]) >> 12; |
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5476074 |
pos++; |
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} |
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365300 |
return 0; |
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} |
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30900 |
static int hq_decode_mb(HQContext *c, AVFrame *pic, |
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GetBitContext *gb, int x, int y) |
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{ |
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int qgroup, flag; |
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int i, ret; |
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30900 |
qgroup = get_bits(gb, 4); |
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30900 |
flag = get_bits1(gb); |
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✓✓ |
278100 |
for (i = 0; i < 8; i++) { |
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247200 |
ret = hq_decode_block(c, gb, c->block[i], qgroup, i >= 4, 0); |
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✗✓ |
247200 |
if (ret < 0) |
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return ret; |
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} |
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30900 |
put_blocks(c, pic, 0, x, y, flag, c->block[0], c->block[2]); |
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30900 |
put_blocks(c, pic, 0, x + 8, y, flag, c->block[1], c->block[3]); |
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30900 |
put_blocks(c, pic, 2, x >> 1, y, flag, c->block[4], c->block[5]); |
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30900 |
put_blocks(c, pic, 1, x >> 1, y, flag, c->block[6], c->block[7]); |
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30900 |
return 0; |
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} |
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static int hq_decode_frame(HQContext *ctx, AVFrame *pic, |
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int prof_num, size_t data_size) |
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{ |
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const HQProfile *profile; |
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GetBitContext gb; |
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const uint8_t *perm, *src = ctx->gbc.buffer; |
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uint32_t slice_off[21]; |
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int slice, start_off, next_off, i, ret; |
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✗✓ |
11 |
if ((unsigned)prof_num >= NUM_HQ_PROFILES) { |
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profile = &ff_hq_profile[0]; |
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avpriv_request_sample(ctx->avctx, "HQ Profile %d", prof_num); |
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} else { |
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profile = &ff_hq_profile[prof_num]; |
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av_log(ctx->avctx, AV_LOG_VERBOSE, "HQ Profile %d\n", prof_num); |
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} |
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ctx->avctx->coded_width = FFALIGN(profile->width, 16); |
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ctx->avctx->coded_height = FFALIGN(profile->height, 16); |
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ctx->avctx->width = profile->width; |
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ctx->avctx->height = profile->height; |
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ctx->avctx->bits_per_raw_sample = 8; |
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ctx->avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
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ret = ff_get_buffer(ctx->avctx, pic, 0); |
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✗✓ |
11 |
if (ret < 0) |
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return ret; |
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/* Offsets are stored from CUV position, so adjust them accordingly. */ |
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✓✓ |
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for (i = 0; i < profile->num_slices + 1; i++) |
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slice_off[i] = bytestream2_get_be24(&ctx->gbc) - 4; |
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next_off = 0; |
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✓✓ |
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for (slice = 0; slice < profile->num_slices; slice++) { |
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start_off = next_off; |
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next_off = profile->tab_h * (slice + 1) / profile->num_slices; |
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perm = profile->perm_tab + start_off * profile->tab_w * 2; |
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✓✗ |
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if (slice_off[slice] < (profile->num_slices + 1) * 3 || |
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✓✗ |
112 |
slice_off[slice] >= slice_off[slice + 1] || |
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✗✓ |
112 |
slice_off[slice + 1] > data_size) { |
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av_log(ctx->avctx, AV_LOG_ERROR, |
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"Invalid slice size %"SIZE_SPECIFIER".\n", data_size); |
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break; |
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} |
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112 |
init_get_bits(&gb, src + slice_off[slice], |
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(slice_off[slice + 1] - slice_off[slice]) * 8); |
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✓✓ |
31012 |
for (i = 0; i < (next_off - start_off) * profile->tab_w; i++) { |
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30900 |
ret = hq_decode_mb(ctx, pic, &gb, perm[0] * 16, perm[1] * 16); |
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✗✓ |
30900 |
if (ret < 0) { |
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av_log(ctx->avctx, AV_LOG_ERROR, |
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"Error decoding macroblock %d at slice %d.\n", i, slice); |
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return ret; |
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} |
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30900 |
perm += 2; |
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} |
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} |
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11 |
return 0; |
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} |
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178 |
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16320 |
static int hqa_decode_mb(HQContext *c, AVFrame *pic, int qgroup, |
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GetBitContext *gb, int x, int y) |
180 |
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{ |
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16320 |
int flag = 0; |
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int i, ret, cbp; |
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184 |
✗✓ |
16320 |
if (get_bits_left(gb) < 1) |
185 |
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return AVERROR_INVALIDDATA; |
186 |
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187 |
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16320 |
cbp = get_vlc2(gb, c->hqa_cbp_vlc.table, 5, 1); |
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189 |
✓✓ |
212160 |
for (i = 0; i < 12; i++) |
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195840 |
memset(c->block[i], 0, sizeof(*c->block)); |
191 |
✓✓ |
212160 |
for (i = 0; i < 12; i++) |
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195840 |
c->block[i][0] = -128 * (1 << 6); |
193 |
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194 |
✓✓ |
16320 |
if (cbp) { |
195 |
|
9978 |
flag = get_bits1(gb); |
196 |
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197 |
|
9978 |
cbp |= cbp << 4; |
198 |
✓✓ |
9978 |
if (cbp & 0x3) |
199 |
|
9890 |
cbp |= 0x500; |
200 |
✓✓ |
9978 |
if (cbp & 0xC) |
201 |
|
9874 |
cbp |= 0xA00; |
202 |
✓✓ |
129714 |
for (i = 0; i < 12; i++) { |
203 |
✓✓ |
119736 |
if (!(cbp & (1 << i))) |
204 |
|
1636 |
continue; |
205 |
|
118100 |
ret = hq_decode_block(c, gb, c->block[i], qgroup, i >= 8, 1); |
206 |
✗✓ |
118100 |
if (ret < 0) |
207 |
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return ret; |
208 |
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} |
209 |
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} |
210 |
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211 |
|
16320 |
put_blocks(c, pic, 3, x, y, flag, c->block[ 0], c->block[ 2]); |
212 |
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16320 |
put_blocks(c, pic, 3, x + 8, y, flag, c->block[ 1], c->block[ 3]); |
213 |
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16320 |
put_blocks(c, pic, 0, x, y, flag, c->block[ 4], c->block[ 6]); |
214 |
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16320 |
put_blocks(c, pic, 0, x + 8, y, flag, c->block[ 5], c->block[ 7]); |
215 |
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16320 |
put_blocks(c, pic, 2, x >> 1, y, flag, c->block[ 8], c->block[ 9]); |
216 |
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16320 |
put_blocks(c, pic, 1, x >> 1, y, flag, c->block[10], c->block[11]); |
217 |
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218 |
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16320 |
return 0; |
219 |
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} |
220 |
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221 |
|
16 |
static int hqa_decode_slice(HQContext *ctx, AVFrame *pic, GetBitContext *gb, |
222 |
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int quant, int slice_no, int w, int h) |
223 |
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{ |
224 |
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int i, j, off; |
225 |
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int ret; |
226 |
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227 |
✓✓ |
1104 |
for (i = 0; i < h; i += 16) { |
228 |
|
1088 |
off = (slice_no * 16 + i * 3) & 0x70; |
229 |
✓✓ |
17408 |
for (j = off; j < w; j += 128) { |
230 |
|
16320 |
ret = hqa_decode_mb(ctx, pic, quant, gb, j, i); |
231 |
✗✓ |
16320 |
if (ret < 0) { |
232 |
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av_log(ctx->avctx, AV_LOG_ERROR, |
233 |
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"Error decoding macroblock at %dx%d.\n", i, j); |
234 |
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return ret; |
235 |
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} |
236 |
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} |
237 |
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} |
238 |
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239 |
|
16 |
return 0; |
240 |
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} |
241 |
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242 |
|
2 |
static int hqa_decode_frame(HQContext *ctx, AVFrame *pic, size_t data_size) |
243 |
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{ |
244 |
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GetBitContext gb; |
245 |
|
2 |
const int num_slices = 8; |
246 |
|
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uint32_t slice_off[9]; |
247 |
|
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int i, slice, ret; |
248 |
|
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int width, height, quant; |
249 |
|
2 |
const uint8_t *src = ctx->gbc.buffer; |
250 |
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|
251 |
✗✓ |
2 |
if (bytestream2_get_bytes_left(&ctx->gbc) < 8 + 4*(num_slices + 1)) |
252 |
|
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return AVERROR_INVALIDDATA; |
253 |
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254 |
|
2 |
width = bytestream2_get_be16(&ctx->gbc); |
255 |
|
2 |
height = bytestream2_get_be16(&ctx->gbc); |
256 |
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|
257 |
|
2 |
ret = ff_set_dimensions(ctx->avctx, width, height); |
258 |
✗✓ |
2 |
if (ret < 0) |
259 |
|
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return ret; |
260 |
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|
261 |
|
2 |
ctx->avctx->coded_width = FFALIGN(width, 16); |
262 |
|
2 |
ctx->avctx->coded_height = FFALIGN(height, 16); |
263 |
|
2 |
ctx->avctx->bits_per_raw_sample = 8; |
264 |
|
2 |
ctx->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; |
265 |
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|
266 |
|
2 |
av_log(ctx->avctx, AV_LOG_VERBOSE, "HQA Profile\n"); |
267 |
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|
268 |
|
2 |
quant = bytestream2_get_byte(&ctx->gbc); |
269 |
|
2 |
bytestream2_skip(&ctx->gbc, 3); |
270 |
✗✓ |
2 |
if (quant >= NUM_HQ_QUANTS) { |
271 |
|
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av_log(ctx->avctx, AV_LOG_ERROR, |
272 |
|
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"Invalid quantization matrix %d.\n", quant); |
273 |
|
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return AVERROR_INVALIDDATA; |
274 |
|
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} |
275 |
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|
276 |
|
2 |
ret = ff_get_buffer(ctx->avctx, pic, 0); |
277 |
✗✓ |
2 |
if (ret < 0) |
278 |
|
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return ret; |
279 |
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|
280 |
|
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/* Offsets are stored from HQA1 position, so adjust them accordingly. */ |
281 |
✓✓ |
20 |
for (i = 0; i < num_slices + 1; i++) |
282 |
|
18 |
slice_off[i] = bytestream2_get_be32(&ctx->gbc) - 4; |
283 |
|
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|
284 |
✓✓ |
18 |
for (slice = 0; slice < num_slices; slice++) { |
285 |
✓✗ |
16 |
if (slice_off[slice] < (num_slices + 1) * 3 || |
286 |
✓✗ |
16 |
slice_off[slice] >= slice_off[slice + 1] || |
287 |
✗✓ |
16 |
slice_off[slice + 1] > data_size) { |
288 |
|
|
av_log(ctx->avctx, AV_LOG_ERROR, |
289 |
|
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"Invalid slice size %"SIZE_SPECIFIER".\n", data_size); |
290 |
|
|
break; |
291 |
|
|
} |
292 |
|
16 |
init_get_bits(&gb, src + slice_off[slice], |
293 |
|
16 |
(slice_off[slice + 1] - slice_off[slice]) * 8); |
294 |
|
|
|
295 |
|
16 |
ret = hqa_decode_slice(ctx, pic, &gb, quant, slice, width, height); |
296 |
✗✓ |
16 |
if (ret < 0) |
297 |
|
|
return ret; |
298 |
|
|
} |
299 |
|
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|
300 |
|
2 |
return 0; |
301 |
|
|
} |
302 |
|
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|
303 |
|
13 |
static int hq_hqa_decode_frame(AVCodecContext *avctx, void *data, |
304 |
|
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int *got_frame, AVPacket *avpkt) |
305 |
|
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{ |
306 |
|
13 |
HQContext *ctx = avctx->priv_data; |
307 |
|
13 |
AVFrame *pic = data; |
308 |
|
|
uint32_t info_tag; |
309 |
|
|
unsigned int data_size; |
310 |
|
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int ret; |
311 |
|
|
unsigned tag; |
312 |
|
|
|
313 |
|
13 |
bytestream2_init(&ctx->gbc, avpkt->data, avpkt->size); |
314 |
✗✓ |
13 |
if (bytestream2_get_bytes_left(&ctx->gbc) < 4 + 4) { |
315 |
|
|
av_log(avctx, AV_LOG_ERROR, "Frame is too small (%d).\n", avpkt->size); |
316 |
|
|
return AVERROR_INVALIDDATA; |
317 |
|
|
} |
318 |
|
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|
319 |
|
13 |
info_tag = bytestream2_peek_le32(&ctx->gbc); |
320 |
✓✗ |
13 |
if (info_tag == MKTAG('I', 'N', 'F', 'O')) { |
321 |
|
|
int info_size; |
322 |
|
13 |
bytestream2_skip(&ctx->gbc, 4); |
323 |
|
13 |
info_size = bytestream2_get_le32(&ctx->gbc); |
324 |
✓✗✗✓
|
13 |
if (info_size < 0 || bytestream2_get_bytes_left(&ctx->gbc) < info_size) { |
325 |
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid INFO size (%d).\n", info_size); |
326 |
|
|
return AVERROR_INVALIDDATA; |
327 |
|
|
} |
328 |
|
13 |
ff_canopus_parse_info_tag(avctx, ctx->gbc.buffer, info_size); |
329 |
|
|
|
330 |
|
13 |
bytestream2_skip(&ctx->gbc, info_size); |
331 |
|
|
} |
332 |
|
|
|
333 |
|
13 |
data_size = bytestream2_get_bytes_left(&ctx->gbc); |
334 |
✗✓ |
13 |
if (data_size < 4) { |
335 |
|
|
av_log(avctx, AV_LOG_ERROR, "Frame is too small (%d).\n", data_size); |
336 |
|
|
return AVERROR_INVALIDDATA; |
337 |
|
|
} |
338 |
|
|
|
339 |
|
|
/* HQ defines dimensions and number of slices, and thus slice traversal |
340 |
|
|
* order. HQA has no size constraint and a fixed number of slices, so it |
341 |
|
|
* needs a separate scheme for it. */ |
342 |
|
13 |
tag = bytestream2_get_le32(&ctx->gbc); |
343 |
✓✓ |
13 |
if ((tag & 0x00FFFFFF) == (MKTAG('U', 'V', 'C', ' ') & 0x00FFFFFF)) { |
344 |
|
11 |
ret = hq_decode_frame(ctx, pic, tag >> 24, data_size); |
345 |
✓✗ |
2 |
} else if (tag == MKTAG('H', 'Q', 'A', '1')) { |
346 |
|
2 |
ret = hqa_decode_frame(ctx, pic, data_size); |
347 |
|
|
} else { |
348 |
|
|
av_log(avctx, AV_LOG_ERROR, "Not a HQ/HQA frame.\n"); |
349 |
|
|
return AVERROR_INVALIDDATA; |
350 |
|
|
} |
351 |
✗✓ |
13 |
if (ret < 0) { |
352 |
|
|
av_log(avctx, AV_LOG_ERROR, "Error decoding frame.\n"); |
353 |
|
|
return ret; |
354 |
|
|
} |
355 |
|
|
|
356 |
|
13 |
pic->key_frame = 1; |
357 |
|
13 |
pic->pict_type = AV_PICTURE_TYPE_I; |
358 |
|
|
|
359 |
|
13 |
*got_frame = 1; |
360 |
|
|
|
361 |
|
13 |
return avpkt->size; |
362 |
|
|
} |
363 |
|
|
|
364 |
|
6 |
static av_cold int hq_hqa_decode_init(AVCodecContext *avctx) |
365 |
|
|
{ |
366 |
|
6 |
HQContext *ctx = avctx->priv_data; |
367 |
|
6 |
ctx->avctx = avctx; |
368 |
|
|
|
369 |
|
6 |
ff_hqdsp_init(&ctx->hqhqadsp); |
370 |
|
|
|
371 |
|
6 |
return ff_hq_init_vlcs(ctx); |
372 |
|
|
} |
373 |
|
|
|
374 |
|
6 |
static av_cold int hq_hqa_decode_close(AVCodecContext *avctx) |
375 |
|
|
{ |
376 |
|
6 |
HQContext *ctx = avctx->priv_data; |
377 |
|
|
|
378 |
|
6 |
ff_free_vlc(&ctx->hq_ac_vlc); |
379 |
|
6 |
ff_free_vlc(&ctx->hqa_cbp_vlc); |
380 |
|
|
|
381 |
|
6 |
return 0; |
382 |
|
|
} |
383 |
|
|
|
384 |
|
|
AVCodec ff_hq_hqa_decoder = { |
385 |
|
|
.name = "hq_hqa", |
386 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("Canopus HQ/HQA"), |
387 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
388 |
|
|
.id = AV_CODEC_ID_HQ_HQA, |
389 |
|
|
.priv_data_size = sizeof(HQContext), |
390 |
|
|
.init = hq_hqa_decode_init, |
391 |
|
|
.decode = hq_hqa_decode_frame, |
392 |
|
|
.close = hq_hqa_decode_close, |
393 |
|
|
.capabilities = AV_CODEC_CAP_DR1, |
394 |
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | |
395 |
|
|
FF_CODEC_CAP_INIT_CLEANUP, |
396 |
|
|
}; |