* PAM image format
* Copyright (c) 2002, 2003 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "bytestream.h"
-#include "pnm.h"
+#include "internal.h"
-
-static int pam_encode_frame(AVCodecContext *avctx, unsigned char *outbuf,
- int buf_size, void *data)
+static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+ const AVFrame *pict, int *got_packet)
{
- PNMContext *s = avctx->priv_data;
- AVFrame *pict = data;
- AVFrame * const p = (AVFrame*)&s->picture;
- int i, h, w, n, linesize, depth, maxval;
+ uint8_t *bytestream_start, *bytestream, *bytestream_end;
+ const AVFrame * const p = pict;
+ int i, h, w, n, linesize, depth, maxval, ret;
const char *tuple_type;
uint8_t *ptr;
- if (buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200) {
+ if ((ret = ff_alloc_packet(pkt, avpicture_get_size(avctx->pix_fmt,
+ avctx->width,
+ avctx->height) + 200)) < 0) {
av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
- return -1;
+ return ret;
}
- *p = *pict;
- p->pict_type = FF_I_TYPE;
- p->key_frame = 1;
-
- s->bytestream_start =
- s->bytestream = outbuf;
- s->bytestream_end = outbuf+buf_size;
+ bytestream_start =
+ bytestream = pkt->data;
+ bytestream_end = pkt->data + pkt->size;
h = avctx->height;
w = avctx->width;
switch (avctx->pix_fmt) {
- case PIX_FMT_MONOWHITE:
+ case AV_PIX_FMT_MONOWHITE:
n = (w + 7) >> 3;
depth = 1;
maxval = 1;
tuple_type = "BLACKANDWHITE";
break;
- case PIX_FMT_GRAY8:
+ case AV_PIX_FMT_GRAY8:
n = w;
depth = 1;
maxval = 255;
tuple_type = "GRAYSCALE";
break;
- case PIX_FMT_RGB24:
+ case AV_PIX_FMT_RGB24:
n = w * 3;
depth = 3;
maxval = 255;
tuple_type = "RGB";
break;
- case PIX_FMT_RGB32:
+ case AV_PIX_FMT_RGB32:
n = w * 4;
depth = 4;
maxval = 255;
default:
return -1;
}
- snprintf(s->bytestream, s->bytestream_end - s->bytestream,
- "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n",
+ snprintf(bytestream, bytestream_end - bytestream,
+ "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
w, h, depth, maxval, tuple_type);
- s->bytestream += strlen(s->bytestream);
+ bytestream += strlen(bytestream);
ptr = p->data[0];
linesize = p->linesize[0];
- if (avctx->pix_fmt == PIX_FMT_RGB32) {
+ if (avctx->pix_fmt == AV_PIX_FMT_RGB32) {
int j;
unsigned int v;
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
v = ((uint32_t *)ptr)[j];
- bytestream_put_be24(&s->bytestream, v);
- *s->bytestream++ = v >> 24;
+ bytestream_put_be24(&bytestream, v);
+ *bytestream++ = v >> 24;
}
ptr += linesize;
}
} else {
for (i = 0; i < h; i++) {
- memcpy(s->bytestream, ptr, n);
- s->bytestream += n;
- ptr += linesize;
+ memcpy(bytestream, ptr, n);
+ bytestream += n;
+ ptr += linesize;
}
}
- return s->bytestream - s->bytestream_start;
+
+ pkt->size = bytestream - bytestream_start;
+ pkt->flags |= AV_PKT_FLAG_KEY;
+ *got_packet = 1;
+ return 0;
}
+static av_cold int pam_encode_init(AVCodecContext *avctx)
+{
+ avctx->coded_frame = av_frame_alloc();
+ if (!avctx->coded_frame)
+ return AVERROR(ENOMEM);
+
+ avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+ avctx->coded_frame->key_frame = 1;
+
+ return 0;
+}
+
+static av_cold int pam_encode_close(AVCodecContext *avctx)
+{
+ av_frame_free(&avctx->coded_frame);
+ return 0;
+}
AVCodec ff_pam_encoder = {
- "pam",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_PAM,
- sizeof(PNMContext),
- ff_pnm_init,
- pam_encode_frame,
- .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, PIX_FMT_NONE},
- .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
+ .name = "pam",
+ .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_PAM,
+ .init = pam_encode_init,
+ .close = pam_encode_close,
+ .encode2 = pam_encode_frame,
+ .pix_fmts = (const enum AVPixelFormat[]){
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_RGB32, AV_PIX_FMT_GRAY8, AV_PIX_FMT_MONOWHITE,
+ AV_PIX_FMT_NONE
+ },
};
projects / ffmpeg / blobdiff