* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
-
-#define RAS_MAGIC 0x59a66a95
-
-/* The Old and Standard format types indicate that the image data is
- * uncompressed. There is no difference between the two formats. */
-#define RT_OLD 0
-#define RT_STANDARD 1
-
-/* The Byte-Encoded format type indicates that the image data is compressed
- * using a run-length encoding scheme. */
-#define RT_BYTE_ENCODED 2
-
-/* The RGB format type indicates that the image is uncompressed with reverse
- * component order from Old and Standard (RGB vs BGR). */
-#define RT_FORMAT_RGB 3
-
-/* The TIFF and IFF format types indicate that the raster file was originally
- * converted from either of these file formats. We do not have any samples or
- * documentation of the format details. */
-#define RT_FORMAT_TIFF 4
-#define RT_FORMAT_IFF 5
-
-/* The Experimental format type is implementation-specific and is generally an
- * indication that the image file does not conform to the Sun Raster file
- * format specification. */
-#define RT_EXPERIMENTAL 0xffff
-
-typedef struct SUNRASTContext {
- AVFrame picture;
-} SUNRASTContext;
-
-static av_cold int sunrast_init(AVCodecContext *avctx) {
- SUNRASTContext *s = avctx->priv_data;
-
- avcodec_get_frame_defaults(&s->picture);
- avctx->coded_frame = &s->picture;
-
- return 0;
-}
+#include "internal.h"
+#include "sunrast.h"
static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
- int *data_size, AVPacket *avpkt) {
+ int *got_frame, AVPacket *avpkt)
+{
const uint8_t *buf = avpkt->data;
const uint8_t *buf_end = avpkt->data + avpkt->size;
- SUNRASTContext * const s = avctx->priv_data;
- AVFrame *picture = data;
- AVFrame * const p = &s->picture;
+ AVFrame * const p = data;
unsigned int w, h, depth, type, maptype, maplength, stride, x, y, len, alen;
uint8_t *ptr;
const uint8_t *bufstart = buf;
+ int ret;
if (avpkt->size < 32)
return AVERROR_INVALIDDATA;
if (AV_RB32(buf) != RAS_MAGIC) {
av_log(avctx, AV_LOG_ERROR, "this is not sunras encoded data\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
w = AV_RB32(buf + 4);
buf += 32;
if (type == RT_FORMAT_TIFF || type == RT_FORMAT_IFF || type == RT_EXPERIMENTAL) {
- av_log_ask_for_sample(avctx, "unsupported (compression) type\n");
+ avpriv_request_sample(avctx, "TIFF/IFF/EXPERIMENTAL (compression) type");
return AVERROR_PATCHWELCOME;
}
if (type > RT_FORMAT_IFF) {
av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if (av_image_check_size(w, h, 0, avctx)) {
- av_log(avctx, AV_LOG_ERROR, "invalid image size\n");
- return -1;
+ if (maptype == RMT_RAW) {
+ avpriv_request_sample(avctx, "Unknown colormap type");
+ return AVERROR_PATCHWELCOME;
}
- if (maptype & ~1) {
+ if (maptype > RMT_RAW) {
av_log(avctx, AV_LOG_ERROR, "invalid colormap type\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
switch (depth) {
case 1:
- avctx->pix_fmt = PIX_FMT_MONOWHITE;
+ avctx->pix_fmt = AV_PIX_FMT_MONOWHITE;
break;
case 8:
- avctx->pix_fmt = maplength ? PIX_FMT_PAL8 : PIX_FMT_GRAY8;
+ avctx->pix_fmt = maplength ? AV_PIX_FMT_PAL8 : AV_PIX_FMT_GRAY8;
break;
case 24:
- avctx->pix_fmt = (type == RT_FORMAT_RGB) ? PIX_FMT_RGB24 : PIX_FMT_BGR24;
+ avctx->pix_fmt = (type == RT_FORMAT_RGB) ? AV_PIX_FMT_RGB24 : AV_PIX_FMT_BGR24;
break;
default:
av_log(avctx, AV_LOG_ERROR, "invalid depth\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- if (p->data[0])
- avctx->release_buffer(avctx, p);
+ ret = ff_set_dimensions(avctx, w, h);
+ if (ret < 0)
+ return ret;
- if (w != avctx->width || h != avctx->height)
- avcodec_set_dimensions(avctx, w, h);
- if (avctx->get_buffer(avctx, p) < 0) {
+ if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
p->pict_type = AV_PICTURE_TYPE_I;
if (maplength % 3 || maplength > 768) {
av_log(avctx, AV_LOG_WARNING, "invalid colormap length\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
ptr = p->data[1];
if (buf_end - buf < 1)
return AVERROR_INVALIDDATA;
- if ((value = *buf++) == 0x80) {
+ if ((value = *buf++) == RLE_TRIGGER) {
run = *buf++ + 1;
if (run != 1)
value = *buf++;
}
}
- *picture = s->picture;
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
return buf - bufstart;
}
-static av_cold int sunrast_end(AVCodecContext *avctx) {
- SUNRASTContext *s = avctx->priv_data;
-
- if(s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
-
- return 0;
-}
-
AVCodec ff_sunrast_decoder = {
.name = "sunrast",
+ .long_name = NULL_IF_CONFIG_SMALL("Sun Rasterfile image"),
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_SUNRAST,
- .priv_data_size = sizeof(SUNRASTContext),
- .init = sunrast_init,
- .close = sunrast_end,
+ .id = AV_CODEC_ID_SUNRAST,
.decode = sunrast_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Sun Rasterfile image"),
};