* a64 video encoder - multicolor modes
* Copyright (c) 2009 Tobias Bindhammer
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* a64 video encoder - multicolor modes
*/
-#include "a64enc.h"
#include "a64colors.h"
#include "a64tables.h"
#include "elbg.h"
#include "internal.h"
+#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#define INTERLACED 1
#define CROP_SCREENS 1
+#define C64XRES 320
+#define C64YRES 200
+
+typedef struct A64Context {
+ /* variables for multicolor modes */
+ AVLFG randctx;
+ int mc_lifetime;
+ int mc_use_5col;
+ unsigned mc_frame_counter;
+ int *mc_meta_charset;
+ int *mc_charmap;
+ int *mc_best_cb;
+ int mc_luma_vals[5];
+ uint8_t *mc_charset;
+ uint8_t *mc_colram;
+ uint8_t *mc_palette;
+ int mc_pal_size;
+
+ /* pts of the next packet that will be output */
+ int64_t next_pts;
+} A64Context;
+
/* gray gradient */
static const int mc_colors[5]={0x0,0xb,0xc,0xf,0x1};
for (y = blocky; y < blocky + 8 && y < C64YRES; y++) {
for (x = blockx; x < blockx + 8 && x < C64XRES; x += 2) {
if(x < width && y < height) {
- /* build average over 2 pixels */
- luma = (src[(x + 0 + y * p->linesize[0])] +
- src[(x + 1 + y * p->linesize[0])]) / 2;
+ if (x + 1 < width) {
+ /* build average over 2 pixels */
+ luma = (src[(x + 0 + y * p->linesize[0])] +
+ src[(x + 1 + y * p->linesize[0])]) / 2;
+ } else {
+ luma = src[(x + y * p->linesize[0])];
+ }
/* write blocks as linear data now so they are suitable for elbg */
dest[0] = luma;
}
static av_cold int a64multi_close_encoder(AVCodecContext *avctx)
{
A64Context *c = avctx->priv_data;
- av_free(c->mc_meta_charset);
- av_free(c->mc_best_cb);
- av_free(c->mc_charset);
- av_free(c->mc_charmap);
- av_free(c->mc_colram);
+ av_freep(&c->mc_meta_charset);
+ av_freep(&c->mc_best_cb);
+ av_freep(&c->mc_charset);
+ av_freep(&c->mc_charmap);
+ av_freep(&c->mc_colram);
return 0;
}
a64_palette[mc_colors[a]][2] * 0.11;
}
- if (!(c->mc_meta_charset = av_malloc(32000 * c->mc_lifetime * sizeof(int))) ||
+ if (!(c->mc_meta_charset = av_mallocz_array(c->mc_lifetime, 32000 * sizeof(int))) ||
!(c->mc_best_cb = av_malloc(CHARSET_CHARS * 32 * sizeof(int))) ||
- !(c->mc_charmap = av_mallocz(1000 * c->mc_lifetime * sizeof(int))) ||
+ !(c->mc_charmap = av_mallocz_array(c->mc_lifetime, 1000 * sizeof(int))) ||
!(c->mc_colram = av_mallocz(CHARSET_CHARS * sizeof(uint8_t))) ||
!(c->mc_charset = av_malloc(0x800 * (INTERLACED+1) * sizeof(uint8_t)))) {
av_log(avctx, AV_LOG_ERROR, "Failed to allocate buffer memory.\n");
AV_WB32(avctx->extradata, c->mc_lifetime);
AV_WB32(avctx->extradata + 16, INTERLACED);
-#if FF_API_CODED_FRAME
-FF_DISABLE_DEPRECATION_WARNINGS
- avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
- avctx->coded_frame->key_frame = 1;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
if (!avctx->codec_tag)
avctx->codec_tag = AV_RL32("a64m");
}
static int a64multi_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
- const AVFrame *pict, int *got_packet)
+ const AVFrame *p, int *got_packet)
{
A64Context *c = avctx->priv_data;
int b_width;
int req_size, ret;
- uint8_t *buf;
+ uint8_t *buf = NULL;
int *charmap = c->mc_charmap;
uint8_t *colram = c->mc_colram;
}
/* no data, means end encoding asap */
- if (!pict) {
+ if (!p) {
/* all done, end encoding */
if (!c->mc_lifetime) return 0;
/* no more frames in queue, prepare to flush remaining frames */
} else {
/* fill up mc_meta_charset with data until lifetime exceeds */
if (c->mc_frame_counter < c->mc_lifetime) {
-#if FF_API_CODED_FRAME
-FF_DISABLE_DEPRECATION_WARNINGS
- avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
- avctx->coded_frame->key_frame = 1;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
- to_meta_with_crop(avctx, pict, meta + 32000 * c->mc_frame_counter);
+ to_meta_with_crop(avctx, p, meta + 32000 * c->mc_frame_counter);
c->mc_frame_counter++;
if (c->next_pts == AV_NOPTS_VALUE)
- c->next_pts = pict->pts;
+ c->next_pts = p->pts;
/* lifetime is not reached so wait for next frame first */
return 0;
}
req_size = 0;
/* any frames to encode? */
if (c->mc_lifetime) {
- req_size = charset_size + c->mc_lifetime*(screen_size + colram_size);
- if ((ret = ff_alloc_packet(pkt, req_size)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", req_size);
+ int alloc_size = charset_size + c->mc_lifetime*(screen_size + colram_size);
+ if ((ret = ff_alloc_packet2(avctx, pkt, alloc_size, 0)) < 0)
return ret;
- }
buf = pkt->data;
/* calc optimal new charset + charmaps */
- ret = ff_init_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb,
+ ret = avpriv_init_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb,
CHARSET_CHARS, 50, charmap, &c->randctx);
if (ret < 0)
return ret;
- ret = ff_do_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb,
+ ret = avpriv_do_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb,
CHARSET_CHARS, 50, charmap, &c->randctx);
if (ret < 0)
return ret;
/* advance pointers */
buf += charset_size;
- charset += charset_size;
+ req_size += charset_size;
}
/* write x frames to buf */
pkt->pts = pkt->dts = c->next_pts;
c->next_pts = AV_NOPTS_VALUE;
+ av_assert0(pkt->size >= req_size);
pkt->size = req_size;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = !!req_size;
return 0;
}
+#if CONFIG_A64MULTI_ENCODER
AVCodec ff_a64multi_encoder = {
.name = "a64multi",
.long_name = NULL_IF_CONFIG_SMALL("Multicolor charset for Commodore 64"),
.pix_fmts = (const enum AVPixelFormat[]) {AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE},
.capabilities = AV_CODEC_CAP_DELAY,
};
-
+#endif
+#if CONFIG_A64MULTI5_ENCODER
AVCodec ff_a64multi5_encoder = {
.name = "a64multi5",
.long_name = NULL_IF_CONFIG_SMALL("Multicolor charset for Commodore 64, extended with 5th color (colram)"),
.pix_fmts = (const enum AVPixelFormat[]) {AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE},
.capabilities = AV_CODEC_CAP_DELAY,
};
+#endif
projects / ffmpeg / blobdiff