#include "avcodec.h"
#include "blockdsp.h"
#include "copy_block.h"
-#include "hwaccel.h"
+#include "hwconfig.h"
#include "idctdsp.h"
#include "internal.h"
#include "jpegtables.h"
return AVERROR_PATCHWELCOME;
}
+ if (s->bayer) {
+ if (nb_components == 2) {
+ /* Bayer images embedded in DNGs can contain 2 interleaved components and the
+ width stored in their SOF3 markers is the width of each one. We only output
+ a single component, therefore we need to adjust the output image width. We
+ handle the deinterleaving (but not the debayering) in this file. */
+ width *= 2;
+ }
+ /* They can also contain 1 component, which is double the width and half the height
+ of the final image (rows are interleaved). We don't handle the decoding in this
+ file, but leave that to the TIFF/DNG decoder. */
+ }
/* if different size, realloc/alloc picture */
if (width != s->width || height != s->height || bits != s->bits ||
}
switch (pix_fmt_id) {
+ case 0x11110000: /* for bayer-encoded huffman lossless JPEGs embedded in DNGs */
+ if (!s->bayer)
+ goto unk_pixfmt;
+ s->avctx->pix_fmt = AV_PIX_FMT_GRAY16LE;
+ break;
case 0x11111100:
if (s->rgb)
s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48;
case 0x22122100:
case 0x21211100:
case 0x22211200:
- if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
- else
- goto unk_pixfmt;
- s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
- break;
case 0x22221100:
case 0x22112200:
case 0x11222200:
return reset;
}
+/* Handles 1 to 4 components */
static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int predictor, int point_transform)
{
int i, mb_x, mb_y;
+ unsigned width;
uint16_t (*buffer)[4];
int left[4], top[4], topleft[4];
const int linesize = s->linesize[0];
const int mask = ((1 << s->bits) - 1) << point_transform;
int resync_mb_y = 0;
int resync_mb_x = 0;
+ int vpred[6];
- if (s->nb_components != 3 && s->nb_components != 4)
+ if (!s->bayer && s->nb_components < 3)
+ return AVERROR_INVALIDDATA;
+ if (s->bayer && s->nb_components > 2)
+ return AVERROR_INVALIDDATA;
+ if (s->nb_components <= 0 || s->nb_components > 4)
return AVERROR_INVALIDDATA;
if (s->v_max != 1 || s->h_max != 1 || !s->lossless)
return AVERROR_INVALIDDATA;
s->restart_count = s->restart_interval;
- av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
- (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
+ if (s->restart_interval == 0)
+ s->restart_interval = INT_MAX;
+
+ if (s->bayer)
+ width = s->mb_width / nb_components; /* Interleaved, width stored is the total so need to divide */
+ else
+ width = s->mb_width;
+
+ av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, width * 4 * sizeof(s->ljpeg_buffer[0][0]));
if (!s->ljpeg_buffer)
return AVERROR(ENOMEM);
for (i = 0; i < 4; i++)
top[i] = left[i] = topleft[i] = buffer[0][i];
- for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
+ if ((mb_y * s->width) % s->restart_interval == 0) {
+ for (i = 0; i < 6; i++)
+ vpred[i] = 1 << (s->bits-1);
+ }
+
+ for (mb_x = 0; mb_x < width; mb_x++) {
int modified_predictor = predictor;
if (get_bits_left(&s->gb) < 1) {
topleft[i] = top[i];
top[i] = buffer[mb_x][i];
- PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
-
dc = mjpeg_decode_dc(s, s->dc_index[i]);
if(dc == 0xFFFFF)
return -1;
+ if (!s->bayer || mb_x) {
+ pred = left[i];
+ } else { /* This path runs only for the first line in bayer images */
+ vpred[i] += dc;
+ pred = vpred[i] - dc;
+ }
+
+ PREDICT(pred, topleft[i], top[i], pred, modified_predictor);
+
left[i] = buffer[mb_x][i] =
mask & (pred + (unsigned)(dc * (1 << point_transform)));
}
ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
}
+ } else if (s->bayer) {
+ if (nb_components == 1) {
+ /* Leave decoding to the TIFF/DNG decoder (see comment in ff_mjpeg_decode_sof) */
+ for (mb_x = 0; mb_x < width; mb_x++)
+ ((uint16_t*)ptr)[mb_x] = buffer[mb_x][0];
+ } else if (nb_components == 2) {
+ for (mb_x = 0; mb_x < width; mb_x++) {
+ ((uint16_t*)ptr)[2*mb_x + 0] = buffer[mb_x][0];
+ ((uint16_t*)ptr)[2*mb_x + 1] = buffer[mb_x][1];
+ }
+ }
} else {
for(i=0; i<nb_components; i++) {
int c= s->comp_index[i];
point_transform, ilv)) < 0)
return ret;
} else {
- if (s->rgb) {
+ if (s->rgb || s->bayer) {
if ((ret = ljpeg_decode_rgb_scan(s, nb_components, predictor, point_transform)) < 0)
return ret;
} else {
int len, id, i;
len = get_bits(&s->gb, 16);
- if (len < 6)
- return AVERROR_INVALIDDATA;
+ if (len < 6) {
+ if (s->bayer) {
+ // Pentax K-1 (digital camera) JPEG images embedded in DNG images contain unknown APP0 markers
+ av_log(s->avctx, AV_LOG_WARNING, "skipping APPx (len=%"PRId32") for bayer-encoded image\n", len);
+ skip_bits(&s->gb, len);
+ return 0;
+ } else
+ return AVERROR_INVALIDDATA;
+ }
if (8 * len > get_bits_left(&s->gb))
return AVERROR_INVALIDDATA;
unsigned nummarkers;
id = get_bits_long(&s->gb, 32);
- id2 = get_bits_long(&s->gb, 24);
+ id2 = get_bits(&s->gb, 24);
len -= 7;
if (id != AV_RB32("PROF") || id2 != AV_RB24("ILE")) {
av_log(s->avctx, AV_LOG_WARNING, "Invalid ICC_PROFILE header in APP2\n");
projects / ffmpeg / blobdiff