* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <inttypes.h>
+
+#include "libavutil/common.h"
+#include "libavutil/intreadwrite.h"
+
#define BITSTREAM_READER_LE
#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "internal.h"
#include "unary.h"
-#include "libavutil/common.h"
-#include "libavutil/intreadwrite.h"
-static int dxtory_decode_v1(AVCodecContext *avctx, AVFrame *pic,
- const uint8_t *src, int src_size)
+static int dxtory_decode_v1_rgb(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size,
+ int id, int bpp)
+{
+ int h;
+ uint8_t *dst;
+ int ret;
+
+ if (src_size < avctx->width * avctx->height * bpp) {
+ av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ avctx->pix_fmt = id;
+ if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+ return ret;
+
+ dst = pic->data[0];
+ for (h = 0; h < avctx->height; h++) {
+ memcpy(dst, src, avctx->width * bpp);
+ src += avctx->width * bpp;
+ dst += pic->linesize[0];
+ }
+
+ return 0;
+}
+
+static int dxtory_decode_v1_410(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
+{
+ int h, w;
+ uint8_t *Y1, *Y2, *Y3, *Y4, *U, *V;
+ int ret;
+
+ if (src_size < avctx->width * avctx->height * 18 / 16) {
+ av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ avctx->pix_fmt = AV_PIX_FMT_YUV410P;
+ if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+ return ret;
+
+ Y1 = pic->data[0];
+ Y2 = pic->data[0] + pic->linesize[0];
+ Y3 = pic->data[0] + pic->linesize[0] * 2;
+ Y4 = pic->data[0] + pic->linesize[0] * 3;
+ U = pic->data[1];
+ V = pic->data[2];
+ for (h = 0; h < avctx->height; h += 4) {
+ for (w = 0; w < avctx->width; w += 4) {
+ AV_COPY32(Y1 + w, src);
+ AV_COPY32(Y2 + w, src + 4);
+ AV_COPY32(Y3 + w, src + 8);
+ AV_COPY32(Y4 + w, src + 12);
+ U[w >> 2] = src[16] + 0x80;
+ V[w >> 2] = src[17] + 0x80;
+ src += 18;
+ }
+ Y1 += pic->linesize[0] << 2;
+ Y2 += pic->linesize[0] << 2;
+ Y3 += pic->linesize[0] << 2;
+ Y4 += pic->linesize[0] << 2;
+ U += pic->linesize[1];
+ V += pic->linesize[2];
+ }
+
+ return 0;
+}
+
+static int dxtory_decode_v1_420(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
{
int h, w;
uint8_t *Y1, *Y2, *U, *V;
return 0;
}
-const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
+static int dxtory_decode_v1_444(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
+{
+ int h, w;
+ uint8_t *Y, *U, *V;
+ int ret;
+
+ if (src_size < avctx->width * avctx->height * 3) {
+ av_log(avctx, AV_LOG_ERROR, "packet too small\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ avctx->pix_fmt = AV_PIX_FMT_YUV444P;
+ if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+ return ret;
+
+ Y = pic->data[0];
+ U = pic->data[1];
+ V = pic->data[2];
+ for (h = 0; h < avctx->height; h++) {
+ for (w = 0; w < avctx->width; w++) {
+ Y[w] = *src++;
+ U[w] = *src++ ^ 0x80;
+ V[w] = *src++ ^ 0x80;
+ }
+ Y += pic->linesize[0];
+ U += pic->linesize[1];
+ V += pic->linesize[2];
+ }
+
+ return 0;
+}
+
+static const uint8_t def_lru[8] = { 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xFF };
+static const uint8_t def_lru_555[8] = { 0x00, 0x08, 0x10, 0x18, 0x1F };
+static const uint8_t def_lru_565[8] = { 0x00, 0x08, 0x10, 0x20, 0x30, 0x3F };
static inline uint8_t decode_sym(GetBitContext *gb, uint8_t lru[8])
{
return val;
}
-static int dx2_decode_slice(GetBitContext *gb, int width, int height,
- uint8_t *Y, uint8_t *U, uint8_t *V,
- int ystride, int ustride, int vstride)
+static int check_slice_size(AVCodecContext *avctx,
+ const uint8_t *src, int src_size,
+ int slice_size, int off)
{
- int x, y, i;
+ int cur_slice_size;
+
+ if (slice_size > src_size - off) {
+ av_log(avctx, AV_LOG_ERROR,
+ "invalid slice size %d (only %d bytes left)\n",
+ slice_size, src_size - off);
+ return AVERROR_INVALIDDATA;
+ }
+ if (slice_size <= 16) {
+ av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n",
+ slice_size);
+ return AVERROR_INVALIDDATA;
+ }
+
+ cur_slice_size = AV_RL32(src + off);
+ if (cur_slice_size != slice_size - 16) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Slice sizes mismatch: got %d instead of %d\n",
+ cur_slice_size, slice_size - 16);
+ }
+
+ return 0;
+}
+
+static int load_buffer(AVCodecContext *avctx,
+ const uint8_t *src, int src_size,
+ GetByteContext *gb,
+ int *nslices, int *off)
+{
+ bytestream2_init(gb, src, src_size);
+ *nslices = bytestream2_get_le16(gb);
+ *off = FFALIGN(*nslices * 4 + 2, 16);
+ if (src_size < *off) {
+ av_log(avctx, AV_LOG_ERROR, "no slice data\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (!*nslices) {
+ avpriv_request_sample(avctx, "%d slices for %dx%d", *nslices,
+ avctx->width, avctx->height);
+ return AVERROR_PATCHWELCOME;
+ }
+
+ return 0;
+}
+
+static inline uint8_t decode_sym_565(GetBitContext *gb, uint8_t lru[8],
+ int bits)
+{
+ uint8_t c, val;
+
+ c = get_unary(gb, 0, bits);
+ if (!c) {
+ val = get_bits(gb, bits);
+ memmove(lru + 1, lru, sizeof(*lru) * (6 - 1));
+ } else {
+ val = lru[c - 1];
+ memmove(lru + 1, lru, sizeof(*lru) * (c - 1));
+ }
+ lru[0] = val;
+
+ return val;
+}
+
+typedef int (*decode_slice_func)(GetBitContext *gb, AVFrame *frame,
+ int line, int height, uint8_t lru[3][8]);
+
+typedef void (*setup_lru_func)(uint8_t lru[3][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)
+{
+ GetByteContext gb;
+ GetBitContext gb2;
+ int nslices, slice, line = 0;
+ uint32_t off, slice_size;
uint8_t lru[3][8];
+ int ret;
+
+ ret = load_buffer(avctx, src, src_size, &gb, &nslices, &off);
+ if (ret < 0)
+ return ret;
+
+ avctx->pix_fmt = fmt;
+ if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
+ return ret;
+
+ for (slice = 0; slice < nslices; slice++) {
+ slice_size = bytestream2_get_le32(&gb);
+
+ setup_lru(lru);
+
+ ret = check_slice_size(avctx, src, src_size, slice_size, off);
+ if (ret < 0)
+ return ret;
+
+ init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
+
+ line += decode_slice(&gb2, pic, line, avctx->height - line, lru);
+
+ off += slice_size;
+ }
+
+ if (avctx->height - line) {
+ av_log(avctx, AV_LOG_VERBOSE,
+ "Not enough slice data available, "
+ "cropping the frame by %d pixels\n",
+ avctx->height - line);
+ avctx->height = line;
+ }
+
+ return 0;
+}
+
+av_always_inline
+static int dx2_decode_slice_5x5(GetBitContext *gb, AVFrame *frame,
+ int line, int left, uint8_t lru[3][8],
+ int is_565)
+{
+ int x, y;
+ int r, g, b;
+ int width = frame->width;
+ int stride = frame->linesize[0];
+ uint8_t *dst = frame->data[0] + stride * line;
+
+ for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
+ for (x = 0; x < width; x++) {
+ b = decode_sym_565(gb, lru[0], 5);
+ g = decode_sym_565(gb, lru[1], is_565 ? 6 : 5);
+ r = decode_sym_565(gb, lru[2], 5);
+ dst[x * 3 + 0] = (r << 3) | (r >> 2);
+ dst[x * 3 + 1] = is_565 ? (g << 2) | (g >> 4) : (g << 3) | (g >> 2);
+ dst[x * 3 + 2] = (b << 3) | (b >> 2);
+ }
+
+ dst += stride;
+ }
+
+ return y;
+}
+
+static void setup_lru_555(uint8_t lru[3][8])
+{
+ memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
+ memcpy(lru[1], def_lru_555, 8 * sizeof(*def_lru));
+ memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
+}
+
+static void setup_lru_565(uint8_t lru[3][8])
+{
+ memcpy(lru[0], def_lru_555, 8 * sizeof(*def_lru));
+ memcpy(lru[1], def_lru_565, 8 * sizeof(*def_lru));
+ memcpy(lru[2], def_lru_555, 8 * sizeof(*def_lru));
+}
+
+static int dx2_decode_slice_555(GetBitContext *gb, AVFrame *frame,
+ int line, int left, uint8_t lru[3][8])
+{
+ return dx2_decode_slice_5x5(gb, frame, line, left, lru, 0);
+}
+
+static int dx2_decode_slice_565(GetBitContext *gb, AVFrame *frame,
+ int line, int left, uint8_t lru[3][8])
+{
+ return dx2_decode_slice_5x5(gb, frame, line, left, lru, 1);
+}
+
+static int dxtory_decode_v2_565(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size, int is_565)
+{
+ 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);
+ else
+ return dxtory_decode_v2(avctx, pic, src, src_size,
+ dx2_decode_slice_555,
+ setup_lru_555,
+ fmt);
+}
+
+static int dx2_decode_slice_rgb(GetBitContext *gb, AVFrame *frame,
+ int line, int left, uint8_t lru[3][8])
+{
+ int x, y;
+ int width = frame->width;
+ int stride = frame->linesize[0];
+ uint8_t *dst = frame->data[0] + stride * line;
+
+ for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
+ for (x = 0; x < width; x++) {
+ dst[x * 3 + 0] = decode_sym(gb, lru[0]);
+ dst[x * 3 + 1] = decode_sym(gb, lru[1]);
+ dst[x * 3 + 2] = decode_sym(gb, lru[2]);
+ }
+
+ dst += stride;
+ }
+
+ return y;
+}
+
+static void default_setup_lru(uint8_t lru[3][8])
+{
+ int i;
for (i = 0; i < 3; i++)
memcpy(lru[i], def_lru, 8 * sizeof(*def_lru));
+}
+
+static int dxtory_decode_v2_rgb(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
+{
+ return dxtory_decode_v2(avctx, pic, src, src_size,
+ dx2_decode_slice_rgb,
+ default_setup_lru,
+ AV_PIX_FMT_BGR24);
+}
+
+static int dx2_decode_slice_410(GetBitContext *gb, AVFrame *frame,
+ int line, int left,
+ uint8_t lru[3][8])
+{
+ int x, y, i, j;
+ int width = frame->width;
+
+ int ystride = frame->linesize[0];
+ int ustride = frame->linesize[1];
+ int vstride = frame->linesize[2];
+
+ uint8_t *Y = frame->data[0] + ystride * line;
+ uint8_t *U = frame->data[1] + (ustride >> 2) * line;
+ uint8_t *V = frame->data[2] + (vstride >> 2) * line;
+
+ for (y = 0; y < left - 3 && get_bits_left(gb) > 16; y += 4) {
+ for (x = 0; x < width; x += 4) {
+ for (j = 0; j < 4; j++)
+ for (i = 0; i < 4; i++)
+ Y[x + i + j * ystride] = decode_sym(gb, lru[0]);
+ U[x >> 2] = decode_sym(gb, lru[1]) ^ 0x80;
+ V[x >> 2] = decode_sym(gb, lru[2]) ^ 0x80;
+ }
+
+ Y += ystride << 2;
+ U += ustride;
+ V += vstride;
+ }
- for (y = 0; y < height; y+=2) {
+ return y;
+}
+
+
+static int dxtory_decode_v2_410(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
+{
+ return dxtory_decode_v2(avctx, pic, src, src_size,
+ dx2_decode_slice_410,
+ default_setup_lru,
+ AV_PIX_FMT_YUV410P);
+}
+
+static int dx2_decode_slice_420(GetBitContext *gb, AVFrame *frame,
+ int line, int left,
+ uint8_t lru[3][8])
+{
+ int x, y;
+
+ int width = frame->width;
+
+ int ystride = frame->linesize[0];
+ int ustride = frame->linesize[1];
+ int vstride = frame->linesize[2];
+
+ uint8_t *Y = frame->data[0] + ystride * line;
+ uint8_t *U = frame->data[1] + (ustride >> 1) * line;
+ uint8_t *V = frame->data[2] + (vstride >> 1) * line;
+
+
+ for (y = 0; y < left - 1 && get_bits_left(gb) > 16; y += 2) {
for (x = 0; x < width; x += 2) {
Y[x + 0 + 0 * ystride] = decode_sym(gb, lru[0]);
Y[x + 1 + 0 * ystride] = decode_sym(gb, lru[0]);
V += vstride;
}
- return 0;
+ return y;
}
-static int dxtory_decode_v2(AVCodecContext *avctx, AVFrame *pic,
- const uint8_t *src, int src_size)
+static int dxtory_decode_v2_420(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
{
- GetByteContext gb;
- GetBitContext gb2;
- int nslices, slice, slice_height;
- uint32_t off, slice_size;
- uint8_t *Y, *U, *V;
- int ret;
+ return dxtory_decode_v2(avctx, pic, src, src_size,
+ dx2_decode_slice_420,
+ default_setup_lru,
+ AV_PIX_FMT_YUV420P);
+}
- bytestream2_init(&gb, src, src_size);
- nslices = bytestream2_get_le16(&gb);
- off = FFALIGN(nslices * 4 + 2, 16);
- if (src_size < off) {
- av_log(avctx, AV_LOG_ERROR, "no slice data\n");
- return AVERROR_INVALIDDATA;
- }
+static int dx2_decode_slice_444(GetBitContext *gb, AVFrame *frame,
+ int line, int left,
+ uint8_t lru[3][8])
+{
+ int x, y;
- if (!nslices || avctx->height % nslices) {
- avpriv_request_sample(avctx, "%d slices for %dx%d", nslices,
- avctx->width, avctx->height);
- return AVERROR(ENOSYS);
- }
+ int width = frame->width;
- slice_height = avctx->height / nslices;
- if ((avctx->width & 1) || (slice_height & 1)) {
- avpriv_request_sample(avctx, "slice dimensions %dx%d",
- avctx->width, slice_height);
- }
+ int ystride = frame->linesize[0];
+ int ustride = frame->linesize[1];
+ int vstride = frame->linesize[2];
- avctx->pix_fmt = AV_PIX_FMT_YUV420P;
- if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
- return ret;
-
- Y = pic->data[0];
- U = pic->data[1];
- V = pic->data[2];
-
- for (slice = 0; slice < nslices; slice++) {
- slice_size = bytestream2_get_le32(&gb);
- if (slice_size > src_size - off) {
- av_log(avctx, AV_LOG_ERROR,
- "invalid slice size %d (only %d bytes left)\n",
- slice_size, src_size - off);
- return AVERROR_INVALIDDATA;
- }
- if (slice_size <= 16) {
- av_log(avctx, AV_LOG_ERROR, "invalid slice size %d\n", slice_size);
- return AVERROR_INVALIDDATA;
- }
+ uint8_t *Y = frame->data[0] + ystride * line;
+ uint8_t *U = frame->data[1] + ustride * line;
+ uint8_t *V = frame->data[2] + vstride * line;
- if (AV_RL32(src + off) != slice_size - 16) {
- av_log(avctx, AV_LOG_ERROR,
- "Slice sizes mismatch: got %d instead of %d\n",
- AV_RL32(src + off), slice_size - 16);
+ for (y = 0; y < left && get_bits_left(gb) > 16; y++) {
+ for (x = 0; x < width; x++) {
+ Y[x] = decode_sym(gb, lru[0]);
+ U[x] = decode_sym(gb, lru[1]) ^ 0x80;
+ V[x] = decode_sym(gb, lru[2]) ^ 0x80;
}
- init_get_bits(&gb2, src + off + 16, (slice_size - 16) * 8);
- dx2_decode_slice(&gb2, avctx->width, slice_height, Y, U, V,
- pic->linesize[0], pic->linesize[1], pic->linesize[2]);
- Y += pic->linesize[0] * slice_height;
- U += pic->linesize[1] * (slice_height >> 1);
- V += pic->linesize[2] * (slice_height >> 1);
- off += slice_size;
+ Y += ystride;
+ U += ustride;
+ V += vstride;
}
- return 0;
+ return y;
+}
+
+static int dxtory_decode_v2_444(AVCodecContext *avctx, AVFrame *pic,
+ const uint8_t *src, int src_size)
+{
+ return dxtory_decode_v2(avctx, pic, src, src_size,
+ dx2_decode_slice_444,
+ default_setup_lru,
+ AV_PIX_FMT_YUV444P);
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
}
switch (AV_RB32(src)) {
+ case 0x01000001:
+ ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
+ AV_PIX_FMT_BGR24, 3);
+ break;
+ case 0x01000009:
+ ret = dxtory_decode_v2_rgb(avctx, pic, src + 16, avpkt->size - 16);
+ break;
case 0x02000001:
- ret = dxtory_decode_v1(avctx, pic, src + 16, avpkt->size - 16);
+ ret = dxtory_decode_v1_420(avctx, pic, src + 16, avpkt->size - 16);
break;
case 0x02000009:
- ret = dxtory_decode_v2(avctx, pic, src + 16, avpkt->size - 16);
+ ret = dxtory_decode_v2_420(avctx, pic, src + 16, avpkt->size - 16);
+ break;
+ case 0x03000001:
+ ret = dxtory_decode_v1_410(avctx, pic, src + 16, avpkt->size - 16);
+ break;
+ case 0x03000009:
+ ret = dxtory_decode_v2_410(avctx, pic, src + 16, avpkt->size - 16);
+ break;
+ case 0x04000001:
+ ret = dxtory_decode_v1_444(avctx, pic, src + 16, avpkt->size - 16);
+ break;
+ case 0x04000009:
+ ret = dxtory_decode_v2_444(avctx, pic, src + 16, avpkt->size - 16);
+ break;
+ case 0x17000001:
+ ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
+ AV_PIX_FMT_RGB565LE, 2);
+ break;
+ case 0x17000009:
+ ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 1);
+ break;
+ case 0x18000001:
+ case 0x19000001:
+ ret = dxtory_decode_v1_rgb(avctx, pic, src + 16, avpkt->size - 16,
+ AV_PIX_FMT_RGB555LE, 2);
+ break;
+ case 0x18000009:
+ case 0x19000009:
+ ret = dxtory_decode_v2_565(avctx, pic, src + 16, avpkt->size - 16, 0);
break;
default:
- avpriv_request_sample(avctx, "Frame header %X", AV_RB32(src));
+ avpriv_request_sample(avctx, "Frame header %"PRIX32, AV_RB32(src));
return AVERROR_PATCHWELCOME;
}
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_DXTORY,
.decode = decode_frame,
- .capabilities = CODEC_CAP_DR1,
+ .capabilities = AV_CODEC_CAP_DR1,
};
projects / ffmpeg / blobdiff