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Diffstat (limited to 'libavcodec/huffyuvenc.c')
-rw-r--r--libavcodec/huffyuvenc.c147
1 files changed, 107 insertions, 40 deletions
diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
index 13c0a79566..95dcb88061 100644
--- a/libavcodec/huffyuvenc.c
+++ b/libavcodec/huffyuvenc.c
@@ -4,20 +4,20 @@
* 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
*/
@@ -29,10 +29,11 @@
#include "avcodec.h"
#include "huffyuv.h"
#include "huffman.h"
+#include "internal.h"
#include "put_bits.h"
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) {
@@ -54,25 +55,28 @@ static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
}
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);
@@ -80,6 +84,32 @@ static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
*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 store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
@@ -94,8 +124,8 @@ static int store_table(HYuvContext *s, const uint8_t *len, uint8_t *buf)
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 {
@@ -115,23 +145,32 @@ static av_cold int encode_init(AVCodecContext *avctx)
avctx->extradata = av_mallocz(1024*30); // 256*3+4 == 772
avctx->stats_out = av_mallocz(1024*30); // 21*256*3(%llu ) + 3(\n) + 1(0) = 16132
+ if (!avctx->extradata || !avctx->stats_out) {
+ av_freep(&avctx->stats_out);
+ return AVERROR(ENOMEM);
+ }
s->version = 2;
avctx->coded_frame = &s->picture;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV420P:
- s->bitstream_bpp = 12;
- break;
case AV_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 == AV_PIX_FMT_YUV420P ? 12 : 16;
break;
case AV_PIX_FMT_RGB32:
+ s->bitstream_bpp = 32;
+ break;
+ case AV_PIX_FMT_RGB24:
s->bitstream_bpp = 24;
break;
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
- return -1;
+ return AVERROR(EINVAL);
}
avctx->bits_per_coded_sample = s->bitstream_bpp;
s->decorrelate = s->bitstream_bpp >= 24;
@@ -143,7 +182,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR,
"context=1 is not compatible with "
"2 pass huffyuv encoding\n");
- return -1;
+ return AVERROR(EINVAL);
}
}else s->context= 0;
@@ -152,13 +191,13 @@ static av_cold int encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR,
"Error: YV12 is not supported by huffyuv; use "
"vcodec=ffvhuff or format=422p\n");
- return -1;
+ return AVERROR(EINVAL);
}
if (avctx->context_model) {
av_log(avctx, AV_LOG_ERROR,
"Error: per-frame huffman tables are not supported "
"by huffyuv; use vcodec=ffvhuff\n");
- return -1;
+ return AVERROR(EINVAL);
}
if (s->interlaced != ( s->height > 288 ))
av_log(avctx, AV_LOG_INFO,
@@ -168,7 +207,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
if (s->bitstream_bpp >= 24 && s->predictor == MEDIAN) {
av_log(avctx, AV_LOG_ERROR,
"Error: RGB is incompatible with median predictor\n");
- return -1;
+ return AVERROR(EINVAL);
}
((uint8_t*)avctx->extradata)[0] = s->predictor | (s->decorrelate << 6);
@@ -232,7 +271,10 @@ static av_cold int encode_init(AVCodecContext *avctx)
s->stats[i][j]= 0;
}
- ff_huffyuv_alloc_temp(s);
+ if (ff_huffyuv_alloc_temp(s)) {
+ ff_huffyuv_common_end(s);
+ return AVERROR(ENOMEM);
+ }
s->picture_number=0;
@@ -338,27 +380,30 @@ static int encode_gray_bitstream(HYuvContext *s, int count)
return 0;
}
-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)) {
@@ -394,11 +439,8 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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;
@@ -529,25 +571,50 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
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 == AV_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");
@@ -610,7 +677,7 @@ AVCodec ff_huffyuv_encoder = {
.encode2 = encode_frame,
.close = encode_end,
.pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
+ AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"),
};
@@ -626,7 +693,7 @@ AVCodec ff_ffvhuff_encoder = {
.encode2 = encode_frame,
.close = encode_end,
.pix_fmts = (const enum AVPixelFormat[]){
- AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
+ AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
},
.long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"),
};
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