#include "avcodec.h"
#include "get_bits.h"
-#include "dsputil.h"
+#include "bswapdsp.h"
+#include "internal.h"
#define MAX_HUFF_CODES 16
typedef struct MotionPixelsContext {
AVCodecContext *avctx;
- AVFrame frame;
- DSPContext dsp;
+ AVFrame *frame;
+ BswapDSPContext bdsp;
uint8_t *changes_map;
int offset_bits_len;
int codes_count, current_codes_count;
int bswapbuf_size;
} MotionPixelsContext;
+static av_cold int mp_decode_end(AVCodecContext *avctx)
+{
+ MotionPixelsContext *mp = avctx->priv_data;
+
+ av_freep(&mp->changes_map);
+ av_freep(&mp->vpt);
+ av_freep(&mp->hpt);
+ av_freep(&mp->bswapbuf);
+ av_frame_free(&mp->frame);
+
+ return 0;
+}
+
static av_cold int mp_decode_init(AVCodecContext *avctx)
{
MotionPixelsContext *mp = avctx->priv_data;
+ int w4 = (avctx->width + 3) & ~3;
+ int h4 = (avctx->height + 3) & ~3;
motionpixels_tableinit();
mp->avctx = avctx;
- dsputil_init(&mp->dsp, avctx);
- mp->changes_map = av_mallocz(avctx->width * avctx->height);
+ ff_bswapdsp_init(&mp->bdsp);
+ mp->changes_map = av_mallocz(avctx->width * h4);
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;
+ mp->hpt = av_mallocz(h4 * w4 / 16 * sizeof(YuvPixel));
+ avctx->pix_fmt = AV_PIX_FMT_RGB555;
+
+ mp->frame = av_frame_alloc();
+ if (!mp->frame) {
+ mp_decode_end(avctx);
+ return AVERROR(ENOMEM);
+ }
+
return 0;
}
continue;
w = FFMIN(w, mp->avctx->width - x);
h = FFMIN(h, mp->avctx->height - y);
- pixels = (uint16_t *)&mp->frame.data[0][y * mp->frame.linesize[0] + x * 2];
+ pixels = (uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2];
while (h--) {
mp->changes_map[offset] = w;
if (read_color)
for (i = 0; i < w; ++i)
pixels[i] = color;
offset += mp->avctx->width;
- pixels += mp->frame.linesize[0] / 2;
+ pixels += mp->frame->linesize[0] / 2;
}
}
}
{
int color;
- color = *(uint16_t *)&mp->frame.data[0][y * mp->frame.linesize[0] + x * 2];
+ color = *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2];
return mp_rgb_yuv_table[color];
}
int color;
color = mp_yuv_to_rgb(p->y, p->v, p->u, 1);
- *(uint16_t *)&mp->frame.data[0][y * mp->frame.linesize[0] + x * 2] = color;
+ *(uint16_t *)&mp->frame->data[0][y * mp->frame->linesize[0] + x * 2] = color;
}
static int mp_get_vlc(MotionPixelsContext *mp, GetBitContext *gb)
int i;
i = (mp->codes_count == 1) ? 0 : get_vlc2(gb, mp->vlc.table, mp->max_codes_bits, 1);
+ i = FFMIN(i, FF_ARRAY_ELEMS(mp->codes) - 1);
return mp->codes[i].delta;
}
p = mp_get_yuv_from_rgb(mp, x - 1, y);
} else {
p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
+ p.y = av_clip_uintp2(p.y, 5);
if ((x & 3) == 0) {
if ((y & 3) == 0) {
p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
+ p.v = av_clip_intp2(p.v, 5);
p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
+ p.u = av_clip_intp2(p.u, 5);
mp->hpt[((y / 4) * mp->avctx->width + x) / 4] = p;
} else {
p.v = mp->hpt[((y / 4) * mp->avctx->width + x) / 4].v;
p = mp_get_yuv_from_rgb(mp, 0, y);
} else {
p.y += mp_gradient(mp, 0, mp_get_vlc(mp, gb));
+ p.y = av_clip_uintp2(p.y, 5);
if ((y & 3) == 0) {
p.v += mp_gradient(mp, 1, mp_get_vlc(mp, gb));
+ p.v = av_clip_intp2(p.v, 5);
p.u += mp_gradient(mp, 2, mp_get_vlc(mp, gb));
+ p.u = av_clip_intp2(p.u, 5);
}
mp->vpt[y] = p;
mp_set_rgb_from_yuv(mp, 0, y, &p);
}
static int mp_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
+ void *data, int *got_frame,
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;
+ int i, count1, count2, sz, ret;
- mp->frame.reference = 1;
- mp->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if (avctx->reget_buffer(avctx, &mp->frame)) {
+ if ((ret = ff_reget_buffer(avctx, mp->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
- return -1;
+ return ret;
}
/* le32 bitstream msb first */
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);
+ mp->bdsp.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);
memset(mp->bswapbuf + buf_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
goto end;
if (mp->changes_map[0] == 0) {
- *(uint16_t *)mp->frame.data[0] = get_bits(&gb, 15);
+ *(uint16_t *)mp->frame->data[0] = get_bits(&gb, 15);
mp->changes_map[0] = 1;
}
mp_read_codes_table(mp, &gb);
if (sz == 0)
goto end;
+ if (mp->max_codes_bits <= 0)
+ goto end;
if (init_vlc(&mp->vlc, mp->max_codes_bits, mp->codes_count, &mp->codes[0].size, sizeof(HuffCode), 1, &mp->codes[0].code, sizeof(HuffCode), 4, 0))
goto end;
mp_decode_frame_helper(mp, &gb);
- free_vlc(&mp->vlc);
+ ff_free_vlc(&mp->vlc);
end:
- *data_size = sizeof(AVFrame);
- *(AVFrame *)data = mp->frame;
+ if ((ret = av_frame_ref(data, mp->frame)) < 0)
+ return ret;
+ *got_frame = 1;
return buf_size;
}
-static av_cold int mp_decode_end(AVCodecContext *avctx)
-{
- MotionPixelsContext *mp = avctx->priv_data;
-
- av_freep(&mp->changes_map);
- av_freep(&mp->vpt);
- av_freep(&mp->hpt);
- av_freep(&mp->bswapbuf);
- if (mp->frame.data[0])
- avctx->release_buffer(avctx, &mp->frame);
-
- return 0;
-}
-
AVCodec ff_motionpixels_decoder = {
.name = "motionpixels",
+ .long_name = NULL_IF_CONFIG_SMALL("Motion Pixels video"),
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_MOTIONPIXELS,
+ .id = AV_CODEC_ID_MOTIONPIXELS,
.priv_data_size = sizeof(MotionPixelsContext),
.init = mp_decode_init,
.close = mp_decode_end,
.decode = mp_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Motion Pixels video"),
};
projects / ffmpeg / blobdiff