33 #define UNCHECKED_BITSTREAM_READER 1
44 #define classic_shift_luma_table_size 42
46 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10,
47 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8,
48 10, 21, 9, 23, 8, 8, 199, 70, 69, 68, 0,
52 #define classic_shift_chroma_table_size 59
54 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83,
55 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141,
56 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79,
57 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34, 0,
62 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
63 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
64 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
65 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
66 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
67 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
68 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
69 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
70 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
71 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
72 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
73 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
74 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
75 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
76 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
77 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
81 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
82 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
83 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
84 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63,
85 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
86 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
87 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111,
88 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1,
89 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134,
90 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96,
91 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
92 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
93 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26,
94 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
95 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
96 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
103 for (
i = 0;
i < n;) {
129 if (
s->bitstream_bpp < 24 ||
s->version > 2) {
131 for (p = 0; p < 4; p++) {
132 int p0 =
s->version > 2 ? p : 0;
133 for (
i = y = 0; y <
s->vlc_n; y++) {
134 int len0 =
s->len[p0][y];
136 if (limit <= 0 || !len0)
140 for (
u = 0;
u <
s->vlc_n;
u++) {
141 int len1 =
s->len[p][
u];
142 if (len1 > limit || !len1)
147 len[
i] = len0 + len1;
148 bits[
i] = (
s->bits[p0][y] << len1) +
s->bits[p][
u];
149 symbols[
i] = (y << 8) + (
u & 0xFF);
155 bits, 2, 2, symbols, 2, 2, 0)) < 0)
161 int p0 =
s->decorrelate;
162 int p1 = !
s->decorrelate;
166 for (
i = 0,
g = -16;
g < 16;
g++) {
167 int len0 =
s->len[p0][
g & 255];
169 if (limit0 < 2 || !len0)
171 for (
b = -16;
b < 16;
b++) {
172 int len1 =
s->len[p1][
b & 255];
173 int limit1 = limit0 - len1;
174 if (limit1 < 1 || !len1)
176 code = (
s->bits[p0][
g & 255] << len1) +
s->bits[p1][
b & 255];
177 for (
r = -16;
r < 16;
r++) {
178 int len2 =
s->len[2][
r & 255];
179 if (len2 > limit1 || !len2)
182 len[
i] = len0 + len1 + len2;
184 if (
s->decorrelate) {
218 count = 1 +
s->alpha + 2*
s->chroma;
220 for (
i = 0;
i < count;
i++) {
227 s->bits[
i], 4, 4, 0)) < 0)
252 for (
i = 0;
i < 256;
i++)
257 if (
s->bitstream_bpp >= 24) {
258 memcpy(
s->bits[1],
s->bits[0], 256 *
sizeof(uint32_t));
259 memcpy(
s->len[1],
s->len[0], 256 *
sizeof(
uint8_t));
261 memcpy(
s->bits[2],
s->bits[1], 256 *
sizeof(uint32_t));
262 memcpy(
s->len[2],
s->len[1], 256 *
sizeof(
uint8_t));
264 for (
i = 0;
i < 4;
i++) {
267 s->bits[
i], 4, 4, 0)) < 0)
285 for (
i = 0;
i < 8;
i++)
302 memset(
s->vlc, 0, 4 *
sizeof(
VLC));
304 s->interlaced = avctx->
height > 288;
322 if (
s->version >= 2) {
323 int method, interlace;
329 s->decorrelate = method & 64 ? 1 : 0;
330 s->predictor = method & 63;
331 if (
s->version == 2) {
333 if (
s->bitstream_bpp == 0)
340 s->chroma_v_shift = (avctx->
extradata[1] >> 2) & 3;
345 interlace = (avctx->
extradata[2] & 0x30) >> 4;
346 s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 :
s->interlaced;
347 s->context = avctx->
extradata[2] & 0x40 ? 1 : 0;
382 if (
s->version <= 2) {
383 switch (
s->bitstream_bpp) {
414 switch ( (
s->chroma<<10) | (
s->yuv<<9) | (
s->alpha<<8) | ((
s->bps-1)<<4) |
s->chroma_h_shift | (
s->chroma_v_shift<<2)) {
557 "for this combination of colorspace and predictor type.\n");
574 #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \
575 code = table[index][0]; \
576 n = table[index][1]; \
577 if (max_depth > 1 && n < 0) { \
578 LAST_SKIP_BITS(name, gb, bits); \
579 UPDATE_CACHE(name, gb); \
582 index = SHOW_UBITS(name, gb, nb_bits) + code; \
583 code = table[index][0]; \
584 n = table[index][1]; \
585 if (max_depth > 2 && n < 0) { \
586 LAST_SKIP_BITS(name, gb, nb_bits); \
587 UPDATE_CACHE(name, gb); \
590 index = SHOW_UBITS(name, gb, nb_bits) + code; \
591 code = table[index][0]; \
592 n = table[index][1]; \
596 LAST_SKIP_BITS(name, gb, n)
599 #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \
600 bits, max_depth, OP) \
602 unsigned int index = SHOW_UBITS(name, gb, bits); \
603 int code, n = dtable[index][1]; \
607 VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \
609 UPDATE_CACHE(re, gb); \
610 index = SHOW_UBITS(name, gb, bits); \
611 VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \
613 code = dtable[index][0]; \
614 OP(dst0, dst1, code); \
615 LAST_SKIP_BITS(name, gb, n); \
619 #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code
621 #define READ_2PIX(dst0, dst1, plane1) \
622 UPDATE_CACHE(re, &s->gb); \
623 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \
624 s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits)
633 if (count >= icount) {
634 for (
i = 0;
i < icount;
i++) {
643 for (;
i < count;
i++)
644 s->temp[0][2 *
i ] =
s->temp[1][
i] =
645 s->temp[0][2 *
i + 1] =
s->temp[2][
i] = 0;
647 for (
i = 0;
i < count;
i++) {
655 #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \
656 UPDATE_CACHE(re, &s->gb); \
657 GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \
658 s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP)
660 #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8)
664 #define READ_2PIX_PLANE16(dst0, dst1, plane){\
665 dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
666 dst0 += get_bits(&s->gb, 2);\
667 dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\
668 dst1 += get_bits(&s->gb, 2);\
681 for(
i=0;
i<count;
i++){
687 int nb_bits,
code, n;
694 }
else if (
s->bps <= 14) {
701 for(
i=0;
i<count;
i++){
707 int nb_bits,
code, n;
720 for(
i=0;
i<count;
i++){
742 for (
i = 0;
i < count;
i++) {
757 int code, n, nb_bits;
761 n =
s->vlc[4].table[
index][1];
765 *(uint32_t *) &
s->temp[0][4 *
i] =
s->pix_bgr_map[
code];
775 s->temp[0][4 *
i +
B] =
code +
s->temp[0][4 *
i +
G];
780 s->temp[0][4 *
i +
R] =
code +
s->temp[0][4 *
i +
G];
802 s->temp[0][4 *
i +
A] = 0;
809 if (
s->decorrelate) {
810 if (
s->bitstream_bpp == 24)
815 if (
s->bitstream_bpp == 24)
827 if (!
s->avctx->draw_horiz_band)
830 h = y -
s->last_slice_end;
833 if (
s->bitstream_bpp == 12)
847 s->last_slice_end = y +
h;
853 return s->llviddsp.add_left_pred(dst,
src,
w,
acc);
855 return s->llviddsp.add_left_pred_int16(( uint16_t *)dst, (
const uint16_t *)
src,
s->n-1,
w,
acc);
862 s->llviddsp.add_bytes(dst,
src,
w);
864 s->hdsp.add_int16((uint16_t*)dst, (
const uint16_t*)
src,
s->n - 1,
w);
871 s->llviddsp.add_median_pred(dst,
src,
diff,
w, left, left_top);
873 s->hdsp.add_hfyu_median_pred_int16((uint16_t *)dst, (
const uint16_t *)
src, (
const uint16_t *)
diff,
s->n-1,
w, left, left_top);
878 int buf_size,
int y_offset,
int table_size)
881 int fake_ystride, fake_ustride, fake_vstride;
882 const int width =
s->width;
883 const int width2 =
s->width >> 1;
886 if ((ret =
init_get_bits8(&
s->gb,
s->bitstream_buffer + table_size, buf_size - table_size)) < 0)
893 if (
s->version > 2) {
895 for(plane = 0; plane < 1 + 2*
s->chroma +
s->alpha; plane++) {
896 int left, lefttop, y;
899 int fake_stride = fake_ystride;
901 if (
s->chroma && (plane == 1 || plane == 2)) {
902 w >>=
s->chroma_h_shift;
903 h >>=
s->chroma_v_shift;
904 fake_stride = plane == 1 ? fake_ustride : fake_vstride;
907 switch (
s->predictor) {
913 for (y = 1; y <
h; y++) {
918 if (
s->predictor ==
PLANE) {
919 if (y >
s->interlaced) {
943 lefttop = p->
data[plane][0];
962 }
else if (
s->bitstream_bpp < 24) {
964 int lefty, leftu, leftv;
965 int lefttopy, lefttopu, lefttopv;
974 "YUY2 output is not implemented yet\n");
985 switch (
s->predictor) {
989 lefty =
s->llviddsp.add_left_pred(p->
data[0] + p->
linesize[0] * y_offset + 2,
s->temp[0],
992 leftu =
s->llviddsp.add_left_pred(p->
data[1] + p->
linesize[1] * y_offset + 1,
s->temp[1], width2 - 1, leftu);
993 leftv =
s->llviddsp.add_left_pred(p->
data[2] + p->
linesize[2] * y_offset + 1,
s->temp[2], width2 - 1, leftv);
996 for (cy = y = 1; y <
height; y++, cy++) {
999 if (
s->bitstream_bpp == 12) {
1004 lefty =
s->llviddsp.add_left_pred(ydst,
s->temp[0],
1006 if (
s->predictor ==
PLANE) {
1007 if (y >
s->interlaced)
1008 s->llviddsp.add_bytes(ydst, ydst - fake_ystride,
width);
1022 lefty =
s->llviddsp.add_left_pred(ydst,
s->temp[0],
1025 leftu =
s->llviddsp.add_left_pred(udst,
s->temp[1], width2, leftu);
1026 leftv =
s->llviddsp.add_left_pred(vdst,
s->temp[2], width2, leftv);
1028 if (
s->predictor ==
PLANE) {
1029 if (cy >
s->interlaced) {
1030 s->llviddsp.add_bytes(ydst, ydst - fake_ystride,
width);
1032 s->llviddsp.add_bytes(udst, udst - fake_ustride, width2);
1033 s->llviddsp.add_bytes(vdst, vdst - fake_vstride, width2);
1044 lefty =
s->llviddsp.add_left_pred(p->
data[0] + 2,
s->temp[0],
1047 leftu =
s->llviddsp.add_left_pred(p->
data[1] + 1,
s->temp[1], width2 - 1, leftu);
1048 leftv =
s->llviddsp.add_left_pred(p->
data[2] + 1,
s->temp[2], width2 - 1, leftv);
1056 if (
s->interlaced) {
1058 lefty =
s->llviddsp.add_left_pred(p->
data[0] + p->
linesize[0],
1059 s->temp[0],
width, lefty);
1061 leftu =
s->llviddsp.add_left_pred(p->
data[1] + p->
linesize[2],
s->temp[1], width2, leftu);
1062 leftv =
s->llviddsp.add_left_pred(p->
data[2] + p->
linesize[1],
s->temp[2], width2, leftv);
1072 lefty =
s->llviddsp.add_left_pred(p->
data[0] + fake_ystride,
1073 s->temp[0], 4, lefty);
1075 leftu =
s->llviddsp.add_left_pred(p->
data[1] + fake_ustride,
s->temp[1], 2, leftu);
1076 leftv =
s->llviddsp.add_left_pred(p->
data[2] + fake_vstride,
s->temp[2], 2, leftv);
1080 lefttopy = p->
data[0][3];
1082 s->llviddsp.add_median_pred(p->
data[0] + fake_ystride + 4,
1083 p->
data[0] + 4,
s->temp[0],
1084 width - 4, &lefty, &lefttopy);
1086 lefttopu = p->
data[1][1];
1087 lefttopv = p->
data[2][1];
1088 s->llviddsp.add_median_pred(p->
data[1] + fake_ustride + 2, p->
data[1] + 2,
s->temp[1], width2 - 2, &leftu, &lefttopu);
1089 s->llviddsp.add_median_pred(p->
data[2] + fake_vstride + 2, p->
data[2] + 2,
s->temp[2], width2 - 2, &leftv, &lefttopv);
1094 for (; y <
height; y++, cy++) {
1097 if (
s->bitstream_bpp == 12) {
1098 while (2 * cy > y) {
1101 s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1117 s->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
1121 s->llviddsp.add_median_pred(udst, udst - fake_ustride,
s->temp[1], width2, &leftu, &lefttopu);
1122 s->llviddsp.add_median_pred(vdst, vdst - fake_vstride,
s->temp[2], width2, &leftv, &lefttopv);
1135 if (
s->bitstream_bpp == 32) {
1144 left[
A] = p->
data[0][last_line +
A] = 255;
1149 switch (
s->predictor) {
1153 s->hdsp.add_hfyu_left_pred_bgr32(p->
data[0] + last_line + 4,
1154 s->temp[0],
width - 1, left);
1156 for (y =
height - 2; y >= 0; y--) {
1159 s->hdsp.add_hfyu_left_pred_bgr32(p->
data[0] + p->
linesize[0] * (y + y_offset),
1160 s->temp[0],
width, left);
1161 if (
s->predictor ==
PLANE) {
1162 if (
s->bitstream_bpp != 32)
1165 s->llviddsp.add_bytes(p->
data[0] + p->
linesize[0] * (y + y_offset),
1167 fake_ystride, 4 *
width);
1176 "prediction type not supported!\n");
1180 "BGR24 output is not implemented yet\n");
1192 int buf_size = avpkt->
size;
1194 const int width =
s->width;
1198 int slice, table_size = 0, ret, nb_slices;
1199 unsigned slices_info_offset;
1206 &
s->bitstream_buffer_size,
1208 if (!
s->bitstream_buffer)
1211 s->bdsp.bswap_buf((uint32_t *)
s->bitstream_buffer,
1212 (
const uint32_t *) buf, buf_size / 4);
1223 if ((
unsigned) (buf_size - table_size) >= INT_MAX / 8)
1226 s->last_slice_end = 0;
1229 (buf_size > 32 &&
AV_RL32(avpkt->
data + buf_size - 16) == 0)) {
1230 slices_info_offset =
AV_RL32(avpkt->
data + buf_size - 4);
1231 slice_height =
AV_RL32(avpkt->
data + buf_size - 8);
1233 if (nb_slices * 8LL + slices_info_offset > buf_size - 16 ||
1234 s->chroma_v_shift ||
1235 slice_height <= 0 || nb_slices * (uint64_t)slice_height >
height)
1242 for (slice = 0; slice < nb_slices; slice++) {
1243 int y_offset, slice_offset, slice_size;
1245 if (nb_slices > 1) {
1246 slice_offset =
AV_RL32(avpkt->
data + slices_info_offset + slice * 8);
1247 slice_size =
AV_RL32(avpkt->
data + slices_info_offset + slice * 8 + 4);
1249 if (slice_offset < 0 || slice_size <= 0 || (slice_offset&3) ||
1250 slice_offset + (int64_t)slice_size > buf_size)
1253 y_offset =
height - (slice + 1) * slice_height;
1254 s->bdsp.bswap_buf((uint32_t *)
s->bitstream_buffer,
1255 (
const uint32_t *)(buf + slice_offset), slice_size / 4);
1259 slice_size = buf_size;
1262 ret =
decode_slice(avctx, p, slice_height, slice_size, y_offset, table_size);
1286 #if CONFIG_FFVHUFF_DECODER
1301 #if CONFIG_HYMT_DECODER
static double val(void *priv, double ch)
AVCodec ff_ffvhuff_decoder
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
int ff_init_vlc_sparse(VLC *vlc_arg, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)
void ff_free_vlc(VLC *vlc)
#define u(width, name, range_min, range_max)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_NUM_DATA_POINTERS
bitstream reader API header.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
#define CLOSE_READER(name, gb)
static int get_bits_left(GetBitContext *gb)
#define SHOW_UBITS(name, gb, num)
#define OPEN_READER(name, gb)
static void skip_bits(GetBitContext *s, int n)
#define UPDATE_CACHE(name, gb)
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
#define LAST_SKIP_BITS(name, gb, num)
static int get_bits_count(const GetBitContext *s)
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define BITS_LEFT(name, gb)
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
#define AV_CODEC_CAP_DRAW_HORIZ_BAND
Decoder can use draw_horiz_band callback.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
av_cold void ff_huffyuv_common_end(HYuvContext *s)
av_cold void ff_huffyuv_common_init(AVCodecContext *avctx)
int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n)
av_cold int ff_huffyuv_alloc_temp(HYuvContext *s)
huffyuv codec for libavcodec.
static const unsigned char classic_add_luma[256]
AVCodec ff_huffyuv_decoder
static void decode_422_bitstream(HYuvContext *s, int count)
static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
static void decode_plane_bitstream(HYuvContext *s, int width, int plane)
#define VLC_INTERN(dst, table, gb, name, bits, max_depth)
Subset of GET_VLC for use in hand-roller VLC code.
#define OP8bits(dst0, dst1, code)
static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
static const unsigned char classic_add_chroma[256]
#define classic_shift_luma_table_size
static av_cold int decode_init(AVCodecContext *avctx)
#define READ_2PIX(dst0, dst1, plane1)
static av_cold int decode_end(AVCodecContext *avctx)
static int decode_slice(AVCodecContext *avctx, AVFrame *p, int height, int buf_size, int y_offset, int table_size)
static const unsigned char classic_shift_luma[classic_shift_luma_table_size+AV_INPUT_BUFFER_PADDING_SIZE]
static int read_old_huffman_tables(HYuvContext *s)
static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc)
static void decode_bgr_bitstream(HYuvContext *s, int count)
static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
#define classic_shift_chroma_table_size
#define READ_2PIX_PLANE16(dst0, dst1, plane)
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static int generate_joint_tables(HYuvContext *s)
static void draw_slice(HYuvContext *s, AVFrame *frame, int y)
#define READ_2PIX_PLANE(dst0, dst1, plane, OP)
static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size+AV_INPUT_BUFFER_PADDING_SIZE]
static void add_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, const uint8_t *diff, int w, int *left, int *left_top)
static av_always_inline void decode_bgr_1(HYuvContext *s, int count, int decorrelate, int alpha)
static void decode_gray_bitstream(HYuvContext *s, int count)
#define OP14bits(dst0, dst1, code)
const VDPAUPixFmtMap * map
static const int16_t alpha[]
av_cold void ff_huffyuvdsp_init(HuffYUVDSPContext *c, enum AVPixelFormat pix_fmt)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
void ff_llviddsp_init(LLVidDSPContext *c)
static av_const int sign_extend(int val, unsigned bits)
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
#define AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUV420P14
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
@ AV_PIX_FMT_YUYV422
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
#define AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P10
FF_ENABLE_DEPRECATION_WARNINGS int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
static void decorrelate(SnowContext *s, SubBand *b, IDWTELEM *src, int stride, int inverse, int use_median)
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
This structure stores compressed data.
static void error(const char *err)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
static const uint8_t offset[127][2]
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)