generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge commit '24abd806ea0cfb0d988d2f0044eac79cff12918c'

Browse Source 
* commit '24abd806ea0cfb0d988d2f0044eac79cff12918c':
  ljpegenc: deMpegEncContextize

Conflicts:
	libavcodec/ljpegenc.c
	libavcodec/mpegvideo.h
	libavcodec/mpegvideo_enc.c
	tests/ref/vsynth/vsynth1-ljpeg
	tests/ref/vsynth/vsynth2-ljpeg

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2013-12-06 12:21:31 +01:00
parent d756b2b530 24abd806ea
commit 93947d88f2
4 changed files with 153 additions and 112 deletions
Download Patch File Download Diff File Expand all files Collapse all files

199
libavcodec/ljpegenc.c
View File

@@ -30,66 +30,71 @@
* lossless JPEG encoder.
*/
#include "libavutil/frame.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "dsputil.h"
#include "internal.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"
typedef struct LJpegEncContext {
DSPContext dsp;
ScanTable scantable;
uint16_t matrix[64];
int vsample[3];
int hsample[3];
uint16_t huff_code_dc_luminance[12];
uint16_t huff_code_dc_chrominance[12];
uint8_t huff_size_dc_luminance[12];
uint8_t huff_size_dc_chrominance[12];
uint16_t (*scratch)[4];
} LJpegEncContext;
static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
MpegEncContext * const s = avctx->priv_data;
MJpegContext * const m = s->mjpeg_ctx;
const int width= s->width;
const int height= s->height;
AVFrame * const p = &s->current_picture.f;
LJpegEncContext *s = avctx->priv_data;
PutBitContext pb;
const int width = avctx->width;
const int height = avctx->height;
const int predictor= avctx->prediction_method+1;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
int ret, max_pkt_size = FF_MIN_BUFFER_SIZE;
const int mb_width = (width + s->hsample[0] - 1) / s->hsample[0];
const int mb_height = (height + s->vsample[0] - 1) / s->vsample[0];
int max_pkt_size = FF_MIN_BUFFER_SIZE;
int ret, header_bits;
if (avctx->pix_fmt == AV_PIX_FMT_BGRA)
if( avctx->pix_fmt == AV_PIX_FMT_BGR0
|| avctx->pix_fmt == AV_PIX_FMT_BGRA
|| avctx->pix_fmt == AV_PIX_FMT_BGR24)
max_pkt_size += width * height * 3 * 4;
else {
max_pkt_size += mb_width * mb_height * 3 * 4
* s->mjpeg_hsample[0] * s->mjpeg_vsample[0];
}
if (!s->rd_scratchpad) {
int alloc_size = FFALIGN(FFABS(pict->linesize[0]) + 64, 32);
s->me.scratchpad =
s->rd_scratchpad = av_mallocz(alloc_size * 4 * 16 * 2);
if (!s->rd_scratchpad) {
av_log(avctx, AV_LOG_ERROR, "failed to allocate context scratch buffers.\n");
return AVERROR(ENOMEM);
}
* s->hsample[0] * s->vsample[0];
}
if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0)
return ret;
init_put_bits(&s->pb, pkt->data, pkt->size);
init_put_bits(&pb, pkt->data, pkt->size);
av_frame_unref(p);
ret = av_frame_ref(p, pict);
if (ret < 0)
return ret;
p->pict_type= AV_PICTURE_TYPE_I;
p->key_frame= 1;
ff_mjpeg_encode_picture_header(avctx, &pb, &s->scantable,
s->matrix);
ff_mjpeg_encode_picture_header(avctx, &s->pb, &s->intra_scantable,
s->intra_matrix);
header_bits = put_bits_count(&pb);
s->header_bits= put_bits_count(&s->pb);
if(avctx->pix_fmt == AV_PIX_FMT_BGR0
if( avctx->pix_fmt == AV_PIX_FMT_BGR0
|| avctx->pix_fmt == AV_PIX_FMT_BGRA
|| avctx->pix_fmt == AV_PIX_FMT_BGR24){
int x, y, i;
const int linesize= p->linesize[0];
uint16_t (*buffer)[4]= (void *) s->rd_scratchpad;
const int linesize = pict->linesize[0];
uint16_t (*buffer)[4] = s->scratch;
int left[3], top[3], topleft[3];
for(i=0; i<3; i++){
@@ -98,10 +103,10 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
for(y = 0; y < height; y++) {
const int modified_predictor= y ? predictor : 1;
uint8_t *ptr = p->data[0] + (linesize * y);
uint8_t *ptr = pict->data[0] + (linesize * y);
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < width*3*4){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
if(pb.buf_end - pb.buf - (put_bits_count(&pb) >> 3) < width * 3 * 4) {
av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
@@ -132,9 +137,9 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
if(i==0)
ff_mjpeg_encode_dc(&s->pb, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
ff_mjpeg_encode_dc(&pb, diff, s->huff_size_dc_luminance, s->huff_code_dc_luminance); //FIXME ugly
else
ff_mjpeg_encode_dc(&s->pb, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
ff_mjpeg_encode_dc(&pb, diff, s->huff_size_dc_chrominance, s->huff_code_dc_chrominance);
}
}
}
@@ -142,8 +147,9 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
int mb_x, mb_y, i;
for(mb_y = 0; mb_y < mb_height; mb_y++) {
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
if (pb.buf_end - pb.buf - (put_bits_count(&pb) >> 3) <
mb_width * 4 * 3 * s->hsample[0] * s->vsample[0]) {
av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
for(mb_x = 0; mb_x < mb_width; mb_x++) {
@@ -151,15 +157,15 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
h = s->hsample[i];
v = s->vsample[i];
linesize = pict->linesize[i];
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
ptr = pict->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
if(y==0 && mb_y==0){
if(x==0 && mb_x==0){
pred= 128;
@@ -175,9 +181,9 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
}
if(i==0)
ff_mjpeg_encode_dc(&s->pb, *ptr - pred, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
ff_mjpeg_encode_dc(&pb, *ptr - pred, s->huff_size_dc_luminance, s->huff_code_dc_luminance); //FIXME ugly
else
ff_mjpeg_encode_dc(&s->pb, *ptr - pred, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
ff_mjpeg_encode_dc(&pb, *ptr - pred, s->huff_size_dc_chrominance, s->huff_code_dc_chrominance);
}
}
}
@@ -185,8 +191,8 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
for(i=0;i<3;i++) {
uint8_t *ptr;
int x, y, h, v, linesize;
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
h = s->hsample[i];
v = s->vsample[i];
linesize = pict->linesize[i];
for(y=0; y<v; y++){
@@ -197,9 +203,9 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
if(i==0)
ff_mjpeg_encode_dc(&s->pb, *ptr - pred, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
ff_mjpeg_encode_dc(&pb, *ptr - pred, s->huff_size_dc_luminance, s->huff_code_dc_luminance); //FIXME ugly
else
ff_mjpeg_encode_dc(&s->pb, *ptr - pred, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance);
ff_mjpeg_encode_dc(&pb, *ptr - pred, s->huff_size_dc_chrominance, s->huff_code_dc_chrominance);
}
}
}
@@ -209,14 +215,12 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
}
emms_c();
av_assert0(s->esc_pos == s->header_bits >> 3);
ff_mjpeg_escape_FF(&s->pb, s->esc_pos);
ff_mjpeg_encode_picture_trailer(&s->pb, s->header_bits);
s->picture_number++;
ff_mjpeg_escape_FF(&pb, header_bits >> 3);
ff_mjpeg_encode_picture_trailer(&pb, header_bits);
flush_put_bits(&s->pb);
pkt->size = put_bits_ptr(&s->pb) - s->pb.buf;
flush_put_bits(&pb);
pkt->size = put_bits_ptr(&pb) - pb.buf;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
@@ -224,19 +228,88 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
// return (put_bits_count(&f->pb)+7)/8;
}
static av_cold int ljpeg_encode_close(AVCodecContext *avctx)
{
LJpegEncContext *s = avctx->priv_data;
AVCodec ff_ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
av_frame_free(&avctx->coded_frame);
av_freep(&s->scratch);
return 0;
}
static av_cold int ljpeg_encode_init(AVCodecContext *avctx)
{
LJpegEncContext *s = avctx->priv_data;
int chroma_v_shift, chroma_h_shift;
if ((avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
avctx->pix_fmt == AV_PIX_FMT_YUV444P) &&
avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
av_log(avctx, AV_LOG_ERROR,
"Limited range YUV is non-standard, set strict_std_compliance to "
"at least unofficial to use it.\n");
return AVERROR(EINVAL);
}
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame)
return AVERROR(ENOMEM);
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
avctx->coded_frame->key_frame = 1;
s->scratch = av_malloc_array(avctx->width + 1, sizeof(*s->scratch));
ff_dsputil_init(&s->dsp, avctx);
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift,
&chroma_v_shift);
if ( avctx->pix_fmt == AV_PIX_FMT_BGR0
|| avctx->pix_fmt == AV_PIX_FMT_BGRA
|| avctx->pix_fmt == AV_PIX_FMT_BGR24) {
s->vsample[0] = s->hsample[0] =
s->vsample[1] = s->hsample[1] =
s->vsample[2] = s->hsample[2] = 1;
} else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P || avctx->pix_fmt == AV_PIX_FMT_YUVJ444P) {
s->vsample[0] = s->vsample[1] = s->vsample[2] = 2;
s->hsample[0] = s->hsample[1] = s->hsample[2] = 1;
} else {
s->vsample[0] = 2;
s->vsample[1] = 2 >> chroma_v_shift;
s->vsample[2] = 2 >> chroma_v_shift;
s->hsample[0] = 2;
s->hsample[1] = 2 >> chroma_h_shift;
s->hsample[2] = 2 >> chroma_h_shift;
}
ff_mjpeg_build_huffman_codes(s->huff_size_dc_luminance,
s->huff_code_dc_luminance,
avpriv_mjpeg_bits_dc_luminance,
avpriv_mjpeg_val_dc);
ff_mjpeg_build_huffman_codes(s->huff_size_dc_chrominance,
s->huff_code_dc_chrominance,
avpriv_mjpeg_bits_dc_chrominance,
avpriv_mjpeg_val_dc);
return 0;
}
AVCodec ff_ljpeg_encoder = {
.name = "ljpeg",
.long_name = NULL_IF_CONFIG_SMALL("Lossless JPEG"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_LJPEG,
.priv_data_size = sizeof(MpegEncContext),
.init = ff_MPV_encode_init,
.priv_data_size = sizeof(LJpegEncContext),
.init = ljpeg_encode_init,
.encode2 = encode_picture_lossless,
.close = ff_MPV_encode_end,
.close = ljpeg_encode_close,
.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_BGR24, AV_PIX_FMT_BGRA, AV_PIX_FMT_BGR0,
AV_PIX_FMT_BGR24 , AV_PIX_FMT_BGRA , AV_PIX_FMT_BGR0,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV420P , AV_PIX_FMT_YUV444P , AV_PIX_FMT_YUV422P,
AV_PIX_FMT_NONE},
};