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a64multienc: switch to encode2().

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We have no decoder, so cannot test if the output is decodable.
This commit is contained in:
Anton Khirnov 2012-02-23 10:21:07 +01:00
parent cfc6ab3199
commit 7340008f18
2 changed files with 29 additions and 14 deletions
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3
libavcodec/a64enc.h
View File

@ -50,6 +50,9 @@ typedef struct A64Context {
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;
#endif /* AVCODEC_A64ENC_H */

40
libavcodec/a64multienc.c
View File

@ -28,6 +28,7 @@
#include "a64colors.h"
#include "a64tables.h"
#include "elbg.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"
#define DITHERSTEPS 8
@ -221,6 +222,8 @@ static av_cold int a64multi_init_encoder(AVCodecContext *avctx)
if (!avctx->codec_tag)
avctx->codec_tag = AV_RL32("a64m");
c->next_pts = AV_NOPTS_VALUE;
return 0;
}
@ -239,11 +242,10 @@ static void a64_compress_colram(unsigned char *buf, int *charmap, uint8_t *colra
}
}
static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
int buf_size, void *data)
static int a64multi_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pict, int *got_packet)
{
A64Context *c = avctx->priv_data;
AVFrame *pict = data;
AVFrame *const p = (AVFrame *) & c->picture;
int frame;
@ -251,7 +253,8 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
int b_height;
int b_width;
int req_size;
int req_size, ret;
uint8_t *buf;
int *charmap = c->mc_charmap;
uint8_t *colram = c->mc_colram;
@ -274,7 +277,7 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
}
/* no data, means end encoding asap */
if (!data) {
if (!pict) {
/* all done, end encoding */
if (!c->mc_lifetime) return 0;
/* no more frames in queue, prepare to flush remaining frames */
@ -292,6 +295,8 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
p->key_frame = 1;
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;
/* lifetime is not reached so wait for next frame first */
return 0;
}
@ -302,6 +307,13 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
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);
return ret;
}
buf = pkt->data;
/* calc optimal new charset + charmaps */
ff_init_elbg(meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
ff_do_elbg (meta, 32, 1000 * c->mc_lifetime, best_cb, CHARSET_CHARS, 50, charmap, &c->randctx);
@ -310,12 +322,11 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
render_charset(avctx, charset, colram);
/* copy charset to buf */
memcpy(buf,charset, charset_size);
memcpy(buf, charset, charset_size);
/* advance pointers */
buf += charset_size;
charset += charset_size;
req_size += charset_size;
}
/* write x frames to buf */
@ -349,11 +360,12 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
/* reset counter */
c->mc_frame_counter = 0;
if (req_size > buf_size) {
av_log(avctx, AV_LOG_ERROR, "buf size too small (need %d, got %d)\n", req_size, buf_size);
return -1;
}
return req_size;
pkt->pts = pkt->dts = c->next_pts;
c->next_pts = AV_NOPTS_VALUE;
pkt->size = req_size;
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = !!req_size;
}
return 0;
}
@ -364,7 +376,7 @@ AVCodec ff_a64multi_encoder = {
.id = CODEC_ID_A64_MULTI,
.priv_data_size = sizeof(A64Context),
.init = a64multi_init_encoder,
.encode = a64multi_encode_frame,
.encode2 = a64multi_encode_frame,
.close = a64multi_close_encoder,
.pix_fmts = (const enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("Multicolor charset for Commodore 64"),
@ -377,7 +389,7 @@ AVCodec ff_a64multi5_encoder = {
.id = CODEC_ID_A64_MULTI5,
.priv_data_size = sizeof(A64Context),
.init = a64multi_init_encoder,
.encode = a64multi_encode_frame,
.encode2 = a64multi_encode_frame,
.close = a64multi_close_encoder,
.pix_fmts = (const enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_NONE},
.long_name = NULL_IF_CONFIG_SMALL("Multicolor charset for Commodore 64, extended with 5th color (colram)"),