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Diffstat (limited to 'libavcodec/mjpegenc.c')
-rw-r--r--libavcodec/mjpegenc.c226
1 files changed, 180 insertions, 46 deletions
diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c
index 30433c3ff6..7487ef8f66 100644
--- a/libavcodec/mjpegenc.c
+++ b/libavcodec/mjpegenc.c
@@ -8,20 +8,20 @@
* aspecting, new decode_frame mechanism and apple mjpeg-b support
* by Alex Beregszaszi
*
- * 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
*/
@@ -30,8 +30,6 @@
* MJPEG encoder.
*/
-#include <assert.h>
-
#include "libavutil/pixdesc.h"
#include "avcodec.h"
@@ -43,9 +41,14 @@ av_cold int ff_mjpeg_encode_init(MpegEncContext *s)
{
MJpegContext *m;
+ if (s->width > 65500 || s->height > 65500) {
+ av_log(s, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n");
+ return AVERROR(EINVAL);
+ }
+
m = av_malloc(sizeof(MJpegContext));
if (!m)
- return -1;
+ return AVERROR(ENOMEM);
s->min_qcoeff=-1023;
s->max_qcoeff= 1023;
@@ -98,20 +101,43 @@ static int put_huffman_table(PutBitContext *p, int table_class, int table_id,
return n + 17;
}
-static void jpeg_table_header(PutBitContext *p, ScanTable *intra_scantable,
- uint16_t intra_matrix[64])
+static void jpeg_table_header(AVCodecContext *avctx, PutBitContext *p,
+ ScanTable *intra_scantable,
+ uint16_t luma_intra_matrix[64],
+ uint16_t chroma_intra_matrix[64],
+ int hsample[3])
{
int i, j, size;
uint8_t *ptr;
+ if (avctx->codec_id != AV_CODEC_ID_LJPEG) {
+ int matrix_count = 1 + !!memcmp(luma_intra_matrix,
+ chroma_intra_matrix,
+ sizeof(luma_intra_matrix[0]) * 64);
/* quant matrixes */
put_marker(p, DQT);
- put_bits(p, 16, 2 + 1 * (1 + 64));
+ put_bits(p, 16, 2 + matrix_count * (1 + 64));
put_bits(p, 4, 0); /* 8 bit precision */
put_bits(p, 4, 0); /* table 0 */
for(i=0;i<64;i++) {
j = intra_scantable->permutated[i];
- put_bits(p, 8, intra_matrix[j]);
+ put_bits(p, 8, luma_intra_matrix[j]);
+ }
+
+ if (matrix_count > 1) {
+ put_bits(p, 4, 0); /* 8 bit precision */
+ put_bits(p, 4, 1); /* table 1 */
+ for(i=0;i<64;i++) {
+ j = intra_scantable->permutated[i];
+ put_bits(p, 8, chroma_intra_matrix[j]);
+ }
+ }
+ }
+
+ if(avctx->active_thread_type & FF_THREAD_SLICE){
+ put_marker(p, DRI);
+ put_bits(p, 16, 4);
+ put_bits(p, 16, (avctx->width-1)/(8*hsample[0]) + 1);
}
/* huffman table */
@@ -142,7 +168,7 @@ static void jpeg_put_comments(AVCodecContext *avctx, PutBitContext *p)
put_marker(p, APP0);
put_bits(p, 16, 16);
avpriv_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
- put_bits(p, 16, 0x0201); /* v 1.02 */
+ put_bits(p, 16, 0x0102); /* v 1.02 */
put_bits(p, 8, 0); /* units type: 0 - aspect ratio */
put_bits(p, 16, avctx->sample_aspect_ratio.num);
put_bits(p, 16, avctx->sample_aspect_ratio.den);
@@ -174,22 +200,22 @@ static void jpeg_put_comments(AVCodecContext *avctx, PutBitContext *p)
}
}
-void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
- ScanTable *intra_scantable,
- uint16_t intra_matrix[64])
+void ff_mjpeg_init_hvsample(AVCodecContext *avctx, int hsample[3], int vsample[3])
{
int chroma_h_shift, chroma_v_shift;
- const int lossless = avctx->codec_id != AV_CODEC_ID_MJPEG;
- int hsample[3], vsample[3];
av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift,
&chroma_v_shift);
-
if (avctx->codec->id == AV_CODEC_ID_LJPEG &&
- avctx->pix_fmt == AV_PIX_FMT_BGR24) {
+ ( avctx->pix_fmt == AV_PIX_FMT_BGR0
+ || avctx->pix_fmt == AV_PIX_FMT_BGRA
+ || avctx->pix_fmt == AV_PIX_FMT_BGR24)) {
vsample[0] = hsample[0] =
vsample[1] = hsample[1] =
vsample[2] = hsample[2] = 1;
+ } else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P || avctx->pix_fmt == AV_PIX_FMT_YUVJ444P) {
+ vsample[0] = vsample[1] = vsample[2] = 2;
+ hsample[0] = hsample[1] = hsample[2] = 1;
} else {
vsample[0] = 2;
vsample[1] = 2 >> chroma_v_shift;
@@ -198,21 +224,41 @@ void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
hsample[1] = 2 >> chroma_h_shift;
hsample[2] = 2 >> chroma_h_shift;
}
+}
+
+void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
+ ScanTable *intra_scantable,
+ uint16_t luma_intra_matrix[64],
+ uint16_t chroma_intra_matrix[64])
+{
+ const int lossless = avctx->codec_id != AV_CODEC_ID_MJPEG && avctx->codec_id != AV_CODEC_ID_AMV;
+ int hsample[3], vsample[3];
+ int i;
+ int chroma_matrix = !!memcmp(luma_intra_matrix,
+ chroma_intra_matrix,
+ sizeof(luma_intra_matrix[0])*64);
+
+ ff_mjpeg_init_hvsample(avctx, hsample, vsample);
put_marker(pb, SOI);
+ // hack for AMV mjpeg format
+ if(avctx->codec_id == AV_CODEC_ID_AMV) goto end;
+
jpeg_put_comments(avctx, pb);
- jpeg_table_header(pb, intra_scantable, intra_matrix);
+ jpeg_table_header(avctx, pb, intra_scantable, luma_intra_matrix, chroma_intra_matrix, hsample);
switch (avctx->codec_id) {
case AV_CODEC_ID_MJPEG: put_marker(pb, SOF0 ); break;
case AV_CODEC_ID_LJPEG: put_marker(pb, SOF3 ); break;
- default: assert(0);
+ default: av_assert0(0);
}
put_bits(pb, 16, 17);
- if (lossless && avctx->pix_fmt == AV_PIX_FMT_BGR24)
+ if (lossless && ( avctx->pix_fmt == AV_PIX_FMT_BGR0
+ || avctx->pix_fmt == AV_PIX_FMT_BGRA
+ || avctx->pix_fmt == AV_PIX_FMT_BGR24))
put_bits(pb, 8, 9); /* 9 bits/component RCT */
else
put_bits(pb, 8, 8); /* 8 bits/component */
@@ -230,13 +276,13 @@ void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
put_bits(pb, 8, 2); /* component number */
put_bits(pb, 4, hsample[1]); /* H factor */
put_bits(pb, 4, vsample[1]); /* V factor */
- put_bits(pb, 8, 0); /* select matrix */
+ put_bits(pb, 8, lossless ? 0 : chroma_matrix); /* select matrix */
/* Cr component */
put_bits(pb, 8, 3); /* component number */
put_bits(pb, 4, hsample[2]); /* H factor */
put_bits(pb, 4, vsample[2]); /* V factor */
- put_bits(pb, 8, 0); /* select matrix */
+ put_bits(pb, 8, lossless ? 0 : chroma_matrix); /* select matrix */
/* scan header */
put_marker(pb, SOS);
@@ -263,20 +309,37 @@ void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
switch (avctx->codec_id) {
case AV_CODEC_ID_MJPEG: put_bits(pb, 8, 63); break; /* Se (not used) */
case AV_CODEC_ID_LJPEG: put_bits(pb, 8, 0); break; /* not used */
- default: assert(0);
+ default: av_assert0(0);
}
put_bits(pb, 8, 0); /* Ah/Al (not used) */
+
+end:
+ if (!lossless) {
+ MpegEncContext *s = avctx->priv_data;
+ av_assert0(avctx->codec->priv_data_size == sizeof(MpegEncContext));
+
+ s->esc_pos = put_bits_count(pb) >> 3;
+ for(i=1; i<s->slice_context_count; i++)
+ s->thread_context[i]->esc_pos = 0;
+ }
}
-static void escape_FF(PutBitContext *pb, int start)
+void ff_mjpeg_escape_FF(PutBitContext *pb, int start)
{
- int size = put_bits_count(pb) - start * 8;
+ int size;
int i, ff_count;
uint8_t *buf = pb->buf + start;
int align= (-(size_t)(buf))&3;
+ int pad = (-put_bits_count(pb))&7;
+
+ if (pad)
+ put_bits(pb, pad, (1<<pad)-1);
+
+ flush_put_bits(pb);
+ size = put_bits_count(pb) - start * 8;
- assert((size&7) == 0);
+ av_assert1((size&7) == 0);
size >>= 3;
ff_count=0;
@@ -321,21 +384,25 @@ static void escape_FF(PutBitContext *pb, int start)
}
}
-void ff_mjpeg_encode_stuffing(PutBitContext * pbc)
+void ff_mjpeg_encode_stuffing(MpegEncContext *s)
{
- int length;
- length= (-put_bits_count(pbc))&7;
- if(length) put_bits(pbc, length, (1<<length)-1);
+ int i;
+ PutBitContext *pbc = &s->pb;
+ int mb_y = s->mb_y - !s->mb_x;
+
+ ff_mjpeg_escape_FF(pbc, s->esc_pos);
+
+ if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height)
+ put_marker(pbc, RST0 + (mb_y&7));
+ s->esc_pos = put_bits_count(pbc) >> 3;
+
+ for(i=0; i<3; i++)
+ s->last_dc[i] = 128 << s->intra_dc_precision;
}
void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits)
{
- ff_mjpeg_encode_stuffing(pb);
- flush_put_bits(pb);
-
- assert((header_bits & 7) == 0);
-
- escape_FF(pb, header_bits >> 3);
+ av_assert1((header_bits & 7) == 0);
put_marker(pb, EOI);
}
@@ -405,7 +472,7 @@ static void encode_block(MpegEncContext *s, int16_t *block, int n)
mant--;
}
- nbits= av_log2(val) + 1;
+ nbits= av_log2_16bit(val) + 1;
code = (run << 4) | nbits;
put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]);
@@ -423,20 +490,70 @@ static void encode_block(MpegEncContext *s, int16_t *block, int n)
void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64])
{
int i;
- for(i=0;i<5;i++) {
- encode_block(s, block[i], i);
- }
- if (s->chroma_format == CHROMA_420) {
+ if (s->chroma_format == CHROMA_444) {
+ encode_block(s, block[0], 0);
+ encode_block(s, block[2], 2);
+ encode_block(s, block[4], 4);
+ encode_block(s, block[8], 8);
encode_block(s, block[5], 5);
+ encode_block(s, block[9], 9);
+
+ if (16*s->mb_x+8 < s->width) {
+ encode_block(s, block[1], 1);
+ encode_block(s, block[3], 3);
+ encode_block(s, block[6], 6);
+ encode_block(s, block[10], 10);
+ encode_block(s, block[7], 7);
+ encode_block(s, block[11], 11);
+ }
} else {
- encode_block(s, block[6], 6);
- encode_block(s, block[5], 5);
- encode_block(s, block[7], 7);
+ for(i=0;i<5;i++) {
+ encode_block(s, block[i], i);
+ }
+ if (s->chroma_format == CHROMA_420) {
+ encode_block(s, block[5], 5);
+ } else {
+ encode_block(s, block[6], 6);
+ encode_block(s, block[5], 5);
+ encode_block(s, block[7], 7);
+ }
}
s->i_tex_bits += get_bits_diff(s);
}
+// maximum over s->mjpeg_vsample[i]
+#define V_MAX 2
+static int amv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pic_arg, int *got_packet)
+
+{
+ MpegEncContext *s = avctx->priv_data;
+ AVFrame *pic;
+ int i, ret;
+ int chroma_h_shift, chroma_v_shift;
+
+ av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
+
+ //CODEC_FLAG_EMU_EDGE have to be cleared
+ if(s->avctx->flags & CODEC_FLAG_EMU_EDGE)
+ return AVERROR(EINVAL);
+
+ pic = av_frame_clone(pic_arg);
+ if (!pic)
+ return AVERROR(ENOMEM);
+ //picture should be flipped upside-down
+ for(i=0; i < 3; i++) {
+ int vsample = i ? 2 >> chroma_v_shift : 2;
+ pic->data[i] += (pic->linesize[i] * (vsample * (8 * s->mb_height -((s->height/V_MAX)&7)) - 1 ));
+ pic->linesize[i] *= -1;
+ }
+ ret = ff_MPV_encode_picture(avctx, pkt, pic, got_packet);
+ av_frame_free(&pic);
+ return ret;
+}
+
+#if CONFIG_MJPEG_ENCODER
AVCodec ff_mjpeg_encoder = {
.name = "mjpeg",
.long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
@@ -446,7 +563,24 @@ AVCodec ff_mjpeg_encoder = {
.init = ff_MPV_encode_init,
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
+ .capabilities = CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE
+ },
+};
+#endif
+#if CONFIG_AMV_ENCODER
+AVCodec ff_amv_encoder = {
+ .name = "amv",
+ .long_name = NULL_IF_CONFIG_SMALL("AMV Video"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_AMV,
+ .priv_data_size = sizeof(MpegEncContext),
+ .init = ff_MPV_encode_init,
+ .encode2 = amv_encode_picture,
+ .close = ff_MPV_encode_end,
.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE
},
};
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 13:43:04 +0000