* see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
* the algorithm used
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
*/
#include "avcodec.h"
+#include "internal.h"
#include "get_bits.h"
#include "put_bits.h"
#include "dsputil.h"
#include "thread.h"
+#include "huffman.h"
#define VLC_BITS 11
static const unsigned char classic_shift_luma[classic_shift_luma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
- 69,68, 0
+ 69,68, 0,
+ 0,0,0,0,0,0,0,0,
};
#define classic_shift_chroma_table_size 59
static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + FF_INPUT_BUFFER_PADDING_SIZE] = {
66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
- 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0
+ 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0,
+ 0,0,0,0,0,0,0,0,
};
static const unsigned char classic_add_luma[256] = {
};
static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
- uint8_t *src, int w, int left)
+ const uint8_t *src, int w, int left)
{
int i;
if (w < 32) {
}
static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
- uint8_t *src, int w,
- int *red, int *green, int *blue)
+ const uint8_t *src, int w,
+ int *red, int *green, int *blue, int *alpha)
{
int i;
- int r,g,b;
+ int r,g,b,a;
r = *red;
g = *green;
b = *blue;
-
+ a = *alpha;
for (i = 0; i < FFMIN(w, 4); i++) {
const int rt = src[i * 4 + R];
const int gt = src[i * 4 + G];
const int bt = src[i * 4 + B];
+ const int at = src[i * 4 + A];
dst[i * 4 + R] = rt - r;
dst[i * 4 + G] = gt - g;
dst[i * 4 + B] = bt - b;
+ dst[i * 4 + A] = at - a;
r = rt;
g = gt;
b = bt;
+ a = at;
}
s->dsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
*red = src[(w - 1) * 4 + R];
*green = src[(w - 1) * 4 + G];
*blue = src[(w - 1) * 4 + B];
+ *alpha = src[(w - 1) * 4 + A];
+}
+
+static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int *red, int *green, int *blue){
+ int i;
+ int r,g,b;
+ r = *red;
+ g = *green;
+ b = *blue;
+ for (i = 0; i < FFMIN(w,16); i++) {
+ const int rt = src[i*3 + 0];
+ const int gt = src[i*3 + 1];
+ const int bt = src[i*3 + 2];
+ dst[i*3 + 0] = rt - r;
+ dst[i*3 + 1] = gt - g;
+ dst[i*3 + 2] = bt - b;
+ r = rt;
+ g = gt;
+ b = bt;
+ }
+
+ s->dsp.diff_bytes(dst + 48, src + 48, src + 48 - 3, w*3 - 48);
+
+ *red = src[(w - 1)*3 + 0];
+ *green = src[(w - 1)*3 + 1];
+ *blue = src[(w - 1)*3 + 2];
}
static int read_len_table(uint8_t *dst, GetBitContext *gb)
return 0;
}
-#if CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER
-typedef struct {
- uint64_t val;
- int name;
-} HeapElem;
-
-static void heap_sift(HeapElem *h, int root, int size)
-{
- while (root * 2 + 1 < size) {
- int child = root * 2 + 1;
- if (child < size - 1 && h[child].val > h[child + 1].val)
- child++;
- if (h[root].val > h[child].val) {
- FFSWAP(HeapElem, h[root], h[child]);
- root = child;
- } else
- break;
- }
-}
-
-static void generate_len_table(uint8_t *dst, const uint64_t *stats)
-{
- HeapElem h[256];
- int up[2*256];
- int len[2*256];
- int offset, i, next;
- int size = 256;
-
- for (offset = 1; ; offset <<= 1) {
- for (i = 0; i < size; i++) {
- h[i].name = i;
- h[i].val = (stats[i] << 8) + offset;
- }
- for (i = size / 2 - 1; i >= 0; i--)
- heap_sift(h, i, size);
-
- for (next = size; next < size * 2 - 1; next++) {
- // merge the two smallest entries, and put it back in the heap
- uint64_t min1v = h[0].val;
- up[h[0].name] = next;
- h[0].val = INT64_MAX;
- heap_sift(h, 0, size);
- up[h[0].name] = next;
- h[0].name = next;
- h[0].val += min1v;
- heap_sift(h, 0, size);
- }
-
- len[2 * size - 2] = 0;
- for (i = 2 * size - 3; i >= size; i--)
- len[i] = len[up[i]] + 1;
- for (i = 0; i < size; i++) {
- dst[i] = len[up[i]] + 1;
- if (dst[i] >= 32) break;
- }
- if (i==size) break;
- }
-}
-#endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
-
static void generate_joint_tables(HYuvContext *s)
{
uint16_t symbols[1 << VLC_BITS];
static int read_old_huffman_tables(HYuvContext *s)
{
-#if 1
GetBitContext gb;
int i;
generate_joint_tables(s);
return 0;
-#else
- av_log(s->avctx, AV_LOG_DEBUG, "v1 huffyuv is not supported \n");
- return -1;
-#endif
}
static av_cold void alloc_temp(HYuvContext *s)
s->width = avctx->width;
s->height = avctx->height;
- assert(s->width>0 && s->height>0);
+ av_assert1(s->width > 0 && s->height > 0);
return 0;
}
memset(s->vlc, 0, 3 * sizeof(VLC));
avctx->coded_frame = &s->picture;
+ avcodec_get_frame_defaults(&s->picture);
s->interlaced = s->height > 288;
s->bgr32 = 1;
return AVERROR_INVALIDDATA;
}
+ if ((avctx->pix_fmt == PIX_FMT_YUV422P || avctx->pix_fmt == PIX_FMT_YUV420P) && avctx->width & 1) {
+ av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
+ return AVERROR_INVALIDDATA;
+ }
+
alloc_temp(s);
return 0;
for (; i < 256 && len[i] == val && repeat < 255; i++)
repeat++;
- assert(val < 32 && val >0 && repeat<256 && repeat>0);
- if ( repeat > 7) {
+ av_assert0(val < 32 && val >0 && repeat<256 && repeat>0);
+ if (repeat > 7) {
buf[index++] = val;
buf[index++] = repeat;
} else {
switch (avctx->pix_fmt) {
case PIX_FMT_YUV420P:
- s->bitstream_bpp = 12;
- break;
case PIX_FMT_YUV422P:
- s->bitstream_bpp = 16;
+ if (s->width & 1) {
+ av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n");
+ return AVERROR(EINVAL);
+ }
+ s->bitstream_bpp = avctx->pix_fmt == PIX_FMT_YUV420P ? 12 : 16;
break;
case PIX_FMT_RGB32:
+ s->bitstream_bpp = 32;
+ break;
+ case PIX_FMT_RGB24:
s->bitstream_bpp = 24;
break;
default:
}
for (i = 0; i < 3; i++) {
- generate_len_table(s->len[i], s->stats[i]);
+ ff_huff_gen_len_table(s->len[i], s->stats[i]);
if (generate_bits_table(s->bits[i], s->len[i]) < 0) {
return -1;
}
}
-static int encode_bgr_bitstream(HYuvContext *s, int count)
+static inline int encode_bgra_bitstream(HYuvContext *s, int count, int planes)
{
int i;
- if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) < 3 * 4 * count) {
+ if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 4*planes*count) {
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
#define LOAD3\
- int g = s->temp[0][4 * i + G];\
- int b = (s->temp[0][4 * i + B] - g) & 0xff;\
- int r = (s->temp[0][4 * i + R] - g) & 0xff;
+ int g = s->temp[0][planes==3 ? 3*i + 1 : 4*i + G];\
+ int b = (s->temp[0][planes==3 ? 3*i + 2 : 4*i + B] - g) & 0xff;\
+ int r = (s->temp[0][planes==3 ? 3*i + 0 : 4*i + R] - g) & 0xff;\
+ int a = s->temp[0][planes*i + A];
#define STAT3\
s->stats[0][b]++;\
s->stats[1][g]++;\
- s->stats[2][r]++;
+ s->stats[2][r]++;\
+ if(planes==4) s->stats[2][a]++;
#define WRITE3\
put_bits(&s->pb, s->len[1][g], s->bits[1][g]);\
put_bits(&s->pb, s->len[0][b], s->bits[0][b]);\
- put_bits(&s->pb, s->len[2][r], s->bits[2][r]);
+ put_bits(&s->pb, s->len[2][r], s->bits[2][r]);\
+ if(planes==4) put_bits(&s->pb, s->len[2][a], s->bits[2][a]);
if ((s->flags & CODEC_FLAG_PASS1) &&
(s->avctx->flags2 & CODEC_FLAG2_NO_OUTPUT)) {
AVFrame * const p = &s->picture;
int i, j, size = 0, ret;
- if (!pkt->data &&
- (ret = av_new_packet(pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error allocating output packet.\n");
+ if ((ret = ff_alloc_packet2(avctx, pkt, width * height * 3 * 4 + FF_MIN_BUFFER_SIZE)) < 0)
return ret;
- }
*p = *pict;
p->pict_type = AV_PICTURE_TYPE_I;
if (s->context) {
for (i = 0; i < 3; i++) {
- generate_len_table(s->len[i], s->stats[i]);
+ ff_huff_gen_len_table(s->len[i], s->stats[i]);
if (generate_bits_table(s->bits[i], s->len[i]) < 0)
return -1;
size += store_table(s, s->len[i], &pkt->data[size]);
const int stride = -p->linesize[0];
const int fake_stride = -fake_ystride;
int y;
- int leftr, leftg, leftb;
+ int leftr, leftg, leftb, lefta;
+ put_bits(&s->pb, 8, lefta = data[A]);
put_bits(&s->pb, 8, leftr = data[R]);
put_bits(&s->pb, 8, leftg = data[G]);
put_bits(&s->pb, 8, leftb = data[B]);
- put_bits(&s->pb, 8, 0);
- sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1, &leftr, &leftg, &leftb);
- encode_bgr_bitstream(s, width - 1);
+ sub_left_prediction_bgr32(s, s->temp[0], data + 4, width - 1, &leftr, &leftg, &leftb, &lefta);
+ encode_bgra_bitstream(s, width - 1, 4);
for (y = 1; y < s->height; y++) {
uint8_t *dst = data + y*stride;
if (s->predictor == PLANE && s->interlaced < y) {
s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
- sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb);
+ sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb, &lefta);
} else {
- sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb);
+ sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb, &lefta);
+ }
+ encode_bgra_bitstream(s, width, 4);
+ }
+ }else if(avctx->pix_fmt == PIX_FMT_RGB24){
+ uint8_t *data = p->data[0] + (height-1)*p->linesize[0];
+ const int stride = -p->linesize[0];
+ const int fake_stride = -fake_ystride;
+ int y;
+ int leftr, leftg, leftb;
+
+ put_bits(&s->pb, 8, leftr= data[0]);
+ put_bits(&s->pb, 8, leftg= data[1]);
+ put_bits(&s->pb, 8, leftb= data[2]);
+ put_bits(&s->pb, 8, 0);
+
+ sub_left_prediction_rgb24(s, s->temp[0], data+3, width-1, &leftr, &leftg, &leftb);
+ encode_bgra_bitstream(s, width-1, 3);
+
+ for(y=1; y<s->height; y++){
+ uint8_t *dst = data + y*stride;
+ if(s->predictor == PLANE && s->interlaced < y){
+ s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width*3);
+ sub_left_prediction_rgb24(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb);
+ }else{
+ sub_left_prediction_rgb24(s, s->temp[0], dst, width, &leftr, &leftg, &leftb);
}
- encode_bgr_bitstream(s, width);
+ encode_bgra_bitstream(s, width, 3);
}
} else {
av_log(avctx, AV_LOG_ERROR, "Format not supported!\n");
.encode2 = encode_frame,
.close = encode_end,
.pix_fmts = (const enum PixelFormat[]){
- PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE
+ PIX_FMT_YUV422P, PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
};
.encode2 = encode_frame,
.close = encode_end,
.pix_fmts = (const enum PixelFormat[]){
- PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE
+ PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
};
projects / ffmpeg / blobdiff