*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
#define MAX_HUFF_CODES 16
-typedef struct YuvPixel {
- int8_t y, v, u;
-} YuvPixel;
+#include "motionpixels_tablegen.h"
typedef struct HuffCode {
int code;
int bswapbuf_size;
} MotionPixelsContext;
-static YuvPixel mp_rgb_yuv_table[1 << 15];
-
-static int mp_yuv_to_rgb(int y, int v, int u, int clip_rgb) {
- static const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
- int r, g, b;
-
- r = (1000 * y + 701 * v) / 1000;
- g = (1000 * y - 357 * v - 172 * u) / 1000;
- b = (1000 * y + 886 * u) / 1000;
- if (clip_rgb)
- return ((cm[r * 8] & 0xF8) << 7) | ((cm[g * 8] & 0xF8) << 2) | (cm[b * 8] >> 3);
- if ((unsigned)r < 32 && (unsigned)g < 32 && (unsigned)b < 32)
- return (r << 10) | (g << 5) | b;
- return 1 << 15;
-}
-
-static void mp_set_zero_yuv(YuvPixel *p)
-{
- int i, j;
-
- for (i = 0; i < 31; ++i) {
- for (j = 31; j > i; --j)
- if (!(p[j].u | p[j].v | p[j].y))
- p[j] = p[j - 1];
- for (j = 0; j < 31 - i; ++j)
- if (!(p[j].u | p[j].v | p[j].y))
- p[j] = p[j + 1];
- }
-}
-
-static void mp_build_rgb_yuv_table(YuvPixel *p)
-{
- int y, v, u, i;
-
- for (y = 0; y <= 31; ++y)
- for (v = -31; v <= 31; ++v)
- for (u = -31; u <= 31; ++u) {
- i = mp_yuv_to_rgb(y, v, u, 0);
- if (i < (1 << 15) && !(p[i].u | p[i].v | p[i].y)) {
- p[i].y = y;
- p[i].v = v;
- p[i].u = u;
- }
- }
- for (i = 0; i < 1024; ++i)
- mp_set_zero_yuv(p + i * 32);
-}
-
static av_cold int mp_decode_init(AVCodecContext *avctx)
{
MotionPixelsContext *mp = avctx->priv_data;
- if (!mp_rgb_yuv_table[0].u) {
- mp_build_rgb_yuv_table(mp_rgb_yuv_table);
- }
+ motionpixels_tableinit();
mp->avctx = avctx;
dsputil_init(&mp->dsp, avctx);
mp->changes_map = av_mallocz(avctx->width * avctx->height);
mp->offset_bits_len = av_log2(avctx->width * avctx->height) + 1;
mp->vpt = av_mallocz(avctx->height * sizeof(YuvPixel));
mp->hpt = av_mallocz(avctx->height * avctx->width / 16 * sizeof(YuvPixel));
+ avctx->pix_fmt = PIX_FMT_RGB555;
return 0;
}
static int mp_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
MotionPixelsContext *mp = avctx->priv_data;
GetBitContext gb;
int i, count1, count2, sz;
}
/* le32 bitstream msb first */
- mp->bswapbuf = av_fast_realloc(mp->bswapbuf, &mp->bswapbuf_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ av_fast_malloc(&mp->bswapbuf, &mp->bswapbuf_size, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!mp->bswapbuf)
+ return AVERROR(ENOMEM);
mp->dsp.bswap_buf((uint32_t *)mp->bswapbuf, (const uint32_t *)buf, buf_size / 4);
if (buf_size & 3)
memcpy(mp->bswapbuf + (buf_size & ~3), buf + (buf_size & ~3), buf_size & 3);
mp_decode_end,
mp_decode_frame,
CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Motion Pixels Video"),
+ .long_name = NULL_IF_CONFIG_SMALL("Motion Pixels video"),
};