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avcodec/dxtory: add support for vertically flipped frames

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This commit is contained in:
Paul B Mahol 2020-09-02 17:38:26 +02:00
parent 69e22e21e3
commit 2d16b6bd3e
1 changed files with 113 additions and 31 deletions
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144
libavcodec/dxtory.c
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@ -32,9 +32,44 @@
#include "internal.h"
#include "unary.h"
static void do_vflip(AVCodecContext *avctx, AVFrame *pic, int vflip)
{
if (!vflip)
return;
switch (pic->format) {
case AV_PIX_FMT_YUV444P:
pic->data[1] += (avctx->height - 1) * pic->linesize[1];
pic->linesize[1] = -pic->linesize[1];
pic->data[2] += (avctx->height - 1) * pic->linesize[2];
pic->linesize[2] = -pic->linesize[2];
case AV_PIX_FMT_BGR24:
case AV_PIX_FMT_RGB24:
pic->data[0] += (avctx->height - 1) * pic->linesize[0];
pic->linesize[0] = -pic->linesize[0];
break;
case AV_PIX_FMT_YUV410P:
pic->data[0] += (avctx->height - 1) * pic->linesize[0];
pic->linesize[0] = -pic->linesize[0];
pic->data[1] += ((avctx->height >> 2) - 1) * pic->linesize[1];
pic->linesize[1] = -pic->linesize[1];
pic->data[2] += ((avctx->height >> 2) - 1) * pic->linesize[2];
pic->linesize[2] = -pic->linesize[2];
break;
case AV_PIX_FMT_YUV420P:
pic->data[0] += (avctx->height - 1) * pic->linesize[0];
pic->linesize[0] = -pic->linesize[0];
pic->data[1] += ((avctx->height >> 1) - 1) * pic->linesize[1];
pic->linesize[1] = -pic->linesize[1];
pic->data[2] += ((avctx->height >> 1) - 1) * pic->linesize[2];
pic->linesize[2] = -pic->linesize[2];
break;
}
}
static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size,
int id, int bpp)
int id, int bpp, uint32_t vflipped)
{
int h;
uint8_t *dst;
@ -49,6 +84,8 @@ static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
do_vflip(avctx, pic, vflipped);
dst = pic->data[0];
for (h = 0; h < avctx->height; h++) {
memcpy(dst, src, avctx->width * bpp);
@ -56,11 +93,14 @@ static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
dst += pic->linesize[0];
}
do_vflip(avctx, pic, vflipped);
return 0;
}
static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
int h, w;
uint8_t *Y1, *Y2, *Y3, *Y4, *U, *V;
@ -75,6 +115,8 @@ static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic,
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
do_vflip(avctx, pic, vflipped);
Y1 = pic->data[0];
Y2 = pic->data[0] + pic->linesize[0];
Y3 = pic->data[0] + pic->linesize[0] * 2;
@ -99,11 +141,14 @@ static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic,
V += pic->linesize[2];
}
do_vflip(avctx, pic, vflipped);
return 0;
}
static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
int h, w;
uint8_t *Y1, *Y2, *U, *V;
@ -118,6 +163,8 @@ static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic,
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
do_vflip(avctx, pic, vflipped);
Y1 = pic->data[0];
Y2 = pic->data[0] + pic->linesize[0];
U = pic->data[1];
@ -136,11 +183,14 @@ static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic,
V += pic->linesize[2];
}
do_vflip(avctx, pic, vflipped);
return 0;
}
static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
int h, w;
uint8_t *Y, *U, *V;
@ -155,6 +205,8 @@ static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic,
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
do_vflip(avctx, pic, vflipped);
Y = pic->data[0];
U = pic->data[1];
V = pic->data[2];
@ -169,6 +221,8 @@ static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic,
V += pic->linesize[2];
}
do_vflip(avctx, pic, vflipped);
return 0;
}
@ -270,7 +324,8 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size,
decode_slice_func decode_slice,
setup_lru_func setup_lru,
enum AVPixelFormat fmt)
enum AVPixelFormat fmt,
uint32_t vflipped)
{
GetByteContext gb, gb_check;
GetBitContext gb2;
@ -301,6 +356,8 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
do_vflip(avctx, pic, vflipped);
for (slice = 0; slice < nslices; slice++) {
slice_size = bytestream2_get_le32(&gb);
@ -322,6 +379,8 @@ static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
avpriv_request_sample(avctx, "Not enough slice data available");
}
do_vflip(avctx, pic, vflipped);
return 0;
}
@ -379,19 +438,20 @@ static int dx2_decode_slice_565(GetBitContext *gb, AVFrame *frame,
}
static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size, int is_565)
const uint8_t *src, int src_size, int is_565,
uint32_t vflipped)
{
enum AVPixelFormat fmt = AV_PIX_FMT_RGB24;
if (is_565)
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_565,
setup_lru_565,
fmt);
fmt, vflipped);
else
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_555,
setup_lru_555,
fmt);
fmt, vflipped);
}
static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame,
@ -424,12 +484,13 @@ static void default_setup_lru(uint8_t lru[3][8])
}
static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_rgb,
default_setup_lru,
AV_PIX_FMT_BGR24);
AV_PIX_FMT_BGR24, vflipped);
}
static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame,
@ -466,12 +527,13 @@ static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame,
static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_410,
default_setup_lru,
AV_PIX_FMT_YUV410P);
AV_PIX_FMT_YUV410P, vflipped);
}
static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame,
@ -510,12 +572,13 @@ static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame,
}
static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_420,
default_setup_lru,
AV_PIX_FMT_YUV420P);
AV_PIX_FMT_YUV420P, vflipped);
}
static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame,
@ -550,12 +613,13 @@ static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame,
}
static int dxtory_decode_v2_444(AVCodecContext *avctx, AVFrame *pic,
const uint8_t *src, int src_size)
const uint8_t *src, int src_size,
uint32_t vflipped)
{
return dxtory_decode_v2(avctx, pic, src, src_size,
dx2_decode_slice_444,
default_setup_lru,
AV_PIX_FMT_YUV444P);
AV_PIX_FMT_YUV444P, vflipped);
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
@ -563,57 +627,75 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
{
AVFrame *pic = data;
const uint8_t *src = avpkt->data;
int ret;
uint32_t type;
int vflipped, ret;
if (avpkt->size < 16) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return AVERROR_INVALIDDATA;
}
switch (AV_RB32(src)) {
type = AV_RB32(src);
vflipped = !!(type & 0x20);
switch (type) {
case 0x01000021:
case 0x01000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_BGR24, 3);
AV_PIX_FMT_BGR24, 3, vflipped);
break;
case 0x01000029:
case 0x01000009:
ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x02000021:
case 0x02000001:
ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x02000029:
case 0x02000009:
ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x03000021:
case 0x03000001:
ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x03000029:
case 0x03000009:
ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x04000021:
case 0x04000001:
ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x04000029:
case 0x04000009:
ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16);
ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16, vflipped);
break;
case 0x17000021:
case 0x17000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_RGB565LE, 2);
AV_PIX_FMT_RGB565LE, 2, vflipped);
break;
case 0x17000029:
case 0x17000009:
ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 1);
ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 1, vflipped);
break;
case 0x18000021:
case 0x19000021:
case 0x18000001:
case 0x19000001:
ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
AV_PIX_FMT_RGB555LE, 2);
AV_PIX_FMT_RGB555LE, 2, vflipped);
break;
case 0x18000029:
case 0x19000029:
case 0x18000009:
case 0x19000009:
ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 0);
ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 0, vflipped);
break;
default:
avpriv_request_sample(avctx, "Frame header %"PRIX32, AV_RB32(src));
avpriv_request_sample(avctx, "Frame header %"PRIX32, type);
return AVERROR_PATCHWELCOME;
}