typedef struct PNGDecContext {
PNGDSPContext dsp;
+ AVCodecContext *avctx;
GetByteContext gb;
AVFrame picture1, picture2;
while (s->zstream.avail_in > 0) {
ret = inflate(&s->zstream, Z_PARTIAL_FLUSH);
if (ret != Z_OK && ret != Z_STREAM_END) {
+ av_log(s->avctx, AV_LOG_ERROR, "inflate returned %d\n", ret);
return -1;
}
if (s->zstream.avail_out == 0) {
s->zstream.zfree = ff_png_zfree;
s->zstream.opaque = NULL;
ret = inflateInit(&s->zstream);
- if (ret != Z_OK)
+ if (ret != Z_OK) {
+ av_log(avctx, AV_LOG_ERROR, "inflateInit returned %d\n", ret);
return -1;
+ }
for(;;) {
if (bytestream2_get_bytes_left(&s->gb) <= 0) {
av_log(avctx, AV_LOG_ERROR, "No bytes left\n");
if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) &&
s->color_type == PNG_COLOR_TYPE_RGB) {
- avctx->pix_fmt = PIX_FMT_RGB24;
+ avctx->pix_fmt = AV_PIX_FMT_RGB24;
} else if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) &&
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
- avctx->pix_fmt = PIX_FMT_RGBA;
+ avctx->pix_fmt = AV_PIX_FMT_RGBA;
} else if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) &&
s->color_type == PNG_COLOR_TYPE_GRAY) {
- avctx->pix_fmt = PIX_FMT_GRAY8;
+ avctx->pix_fmt = AV_PIX_FMT_GRAY8;
} else if (s->bit_depth == 16 &&
s->color_type == PNG_COLOR_TYPE_GRAY) {
- avctx->pix_fmt = PIX_FMT_GRAY16BE;
+ avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
} else if (s->bit_depth == 16 &&
s->color_type == PNG_COLOR_TYPE_RGB) {
- avctx->pix_fmt = PIX_FMT_RGB48BE;
+ avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
} else if (s->bit_depth == 16 &&
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) {
- avctx->pix_fmt = PIX_FMT_RGBA64BE;
+ avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
} else if ((s->bits_per_pixel == 1 || s->bits_per_pixel == 2 || s->bits_per_pixel == 4 || s->bits_per_pixel == 8) &&
s->color_type == PNG_COLOR_TYPE_PALETTE) {
- avctx->pix_fmt = PIX_FMT_PAL8;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
} else if (s->bit_depth == 1) {
- avctx->pix_fmt = PIX_FMT_MONOBLACK;
+ avctx->pix_fmt = AV_PIX_FMT_MONOBLACK;
} else if (s->bit_depth == 8 &&
s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
- avctx->pix_fmt = PIX_FMT_Y400A;
+ avctx->pix_fmt = AV_PIX_FMT_Y400A;
} else {
av_log(avctx, AV_LOG_ERROR, "unsupported bit depth %d "
"and color type %d\n",
s->image_buf = p->data[0];
s->image_linesize = p->linesize[0];
/* copy the palette if needed */
- if (avctx->pix_fmt == PIX_FMT_PAL8)
+ if (avctx->pix_fmt == AV_PIX_FMT_PAL8)
memcpy(p->data[1], s->palette, 256 * sizeof(uint32_t));
/* empty row is used if differencing to the first row */
s->last_row = av_mallocz(s->row_size);
ff_pngdsp_init(&s->dsp);
+ s->avctx = avctx;
+
return 0;
}