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ffmpeg.wasm-core
Commit 2a26520a authored by Tobias Bindhammer's avatar Tobias Bindhammer
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Cosmetics, lots of. 

Originally committed as revision 25348 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent bbc26bae
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Showing with 48 additions and 45 deletions
libavcodec/a64multienc.c
View file @ 2a26520a
......@@ -46,14 +46,14 @@ static void to_meta_with_crop(AVCodecContext *avctx, AVFrame *p, int *dest)
{
int blockx, blocky, x, y;
int luma = 0;
int height = FFMIN(avctx->height,C64YRES);
int width = FFMIN(avctx->width ,C64XRES);
int height = FFMIN(avctx->height, C64YRES);
int width = FFMIN(avctx->width , C64XRES);
uint8_t *src = p->data[0];
for (blocky = 0; blocky < C64YRES; blocky += 8) {
for (blockx = 0; blockx < C64XRES; blockx += 8) {
for (y = blocky; y < blocky+8 && y < C64YRES; y++) {
for (x = blockx; x < blockx+8 && x < C64XRES; x += 2) {
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])] +
......@@ -87,17 +87,18 @@ static void render_charset(AVCodecContext *avctx, uint8_t *charset,
/* generate lookup-tables for dither and index before looping */
i = 0;
for (a=0; a < 256; a++) {
if(i < c->mc_pal_size -1 && a == c->mc_luma_vals[i+1]) {
distance = c->mc_luma_vals[i+1] - c->mc_luma_vals[i];
if(i < c->mc_pal_size -1 && a == c->mc_luma_vals[i + 1]) {
distance = c->mc_luma_vals[i + 1] - c->mc_luma_vals[i];
for(b = 0; b <= distance; b++) {
dither[c->mc_luma_vals[i]+b] = b * (DITHERSTEPS - 1) / distance;
dither[c->mc_luma_vals[i] + b] = b * (DITHERSTEPS - 1) / distance;
}
i++;
}
if(i >= c->mc_pal_size - 1) dither[a] = 0;
index1[a] = i;
index2[a] = FFMIN(i+1, c->mc_pal_size - 1);
index2[a] = FFMIN(i + 1, c->mc_pal_size - 1);
}
/* and render charset */
for (charpos = 0; charpos < CHARSET_CHARS; charpos++) {
lowdiff = 0;
......@@ -115,7 +116,7 @@ static void render_charset(AVCodecContext *avctx, uint8_t *charset,
row1 <<= 2;
if(INTERLACED) {
if (INTERLACED) {
row2 <<= 2;
if (interlaced_dither_patterns[dither[pix]][(y & 3) * 2 + 0][x & 3])
row1 |= 3-(index2[pix] & 3);
......@@ -135,7 +136,7 @@ static void render_charset(AVCodecContext *avctx, uint8_t *charset,
}
}
charset[y+0x000] = row1;
if(INTERLACED) charset[y+0x800] = row2;
if (INTERLACED) charset[y+0x800] = row2;
}
/* do we need to adjust pixels? */
if (highdiff > 0 && lowdiff > 0 && c->mc_use_5col) {
......@@ -195,23 +196,23 @@ static av_cold int a64multi_init_encoder(AVCodecContext *avctx)
a64_palette[mc_colors[a]][2] * 0.11;
}
if(!(c->mc_meta_charset = av_malloc (32000 * c->mc_lifetime * 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_colram = av_mallocz(CHARSET_CHARS * sizeof(uint8_t))) ||
!(c->mc_charset = av_malloc (0x800 * (INTERLACED+1) * sizeof(uint8_t)))) {
if (!(c->mc_meta_charset = av_malloc(32000 * c->mc_lifetime * 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_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");
return AVERROR(ENOMEM);
}
/* set up extradata */
if(!(avctx->extradata = av_mallocz(8 * 4 + FF_INPUT_BUFFER_PADDING_SIZE))) {
if (!(avctx->extradata = av_mallocz(8 * 4 + FF_INPUT_BUFFER_PADDING_SIZE))) {
av_log(avctx, AV_LOG_ERROR, "Failed to allocate memory for extradata.\n");
return AVERROR(ENOMEM);
}
avctx->extradata_size = 8 * 4;
AV_WB32(avctx->extradata, c->mc_lifetime);
AV_WB32(avctx->extradata+16, INTERLACED);
AV_WB32(avctx->extradata + 16, INTERLACED);
avcodec_get_frame_defaults(&c->picture);
avctx->coded_frame = &c->picture;
......@@ -233,7 +234,7 @@ static void a64_compress_colram(unsigned char *buf, int *charmap, uint8_t *colra
temp = colram[charmap[a + 0x000]] << 0;
temp |= colram[charmap[a + 0x100]] << 1;
temp |= colram[charmap[a + 0x200]] << 2;
if(a < 0xe8) temp |= colram[charmap[a + 0x300]] << 3;
if (a < 0xe8) temp |= colram[charmap[a + 0x300]] << 3;
buf[a] = temp << 2;
}
}
......@@ -251,17 +252,17 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
int b_width;
int req_size;
int num_frames = c->mc_lifetime;
int num_frames = c->mc_lifetime;
int *charmap = c->mc_charmap;
uint8_t *colram = c->mc_colram;
uint8_t *charset = c->mc_charset;
int *meta = c->mc_meta_charset;
int *best_cb = c->mc_best_cb;
int *charmap = c->mc_charmap;
uint8_t *colram = c->mc_colram;
uint8_t *charset = c->mc_charset;
int *meta = c->mc_meta_charset;
int *best_cb = c->mc_best_cb;
int charset_size = 0x800 * (INTERLACED + 1);
int screen_size;
int colram_size = 0x100 * c->mc_use_5col;
int screen_size;
if(CROP_SCREENS) {
b_height = FFMIN(avctx->height,C64YRES) >> 3;
......@@ -276,17 +277,16 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
/* no data, means end encoding asap */
if (!data) {
/* all done, end encoding */
if(!c->mc_lifetime) return 0;
if (!c->mc_lifetime) return 0;
/* no more frames in queue, prepare to flush remaining frames */
if(!c->mc_frame_counter) {
num_frames=c->mc_lifetime;
c->mc_lifetime=0;
if (!c->mc_frame_counter) {
num_frames = c->mc_lifetime;
c->mc_lifetime = 0;
}
/* still frames in queue so limit lifetime to remaining frames */
else c->mc_lifetime=c->mc_frame_counter;
}
else c->mc_lifetime = c->mc_frame_counter;
/* still new data available */
else {
} else {
/* fill up mc_meta_charset with data until lifetime exceeds */
if (c->mc_frame_counter < c->mc_lifetime) {
*p = *pict;
......@@ -303,7 +303,7 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
if (c->mc_frame_counter == c->mc_lifetime) {
req_size = 0;
/* any frames to encode? */
if(c->mc_lifetime) {
if (c->mc_lifetime) {
/* 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);
......@@ -335,8 +335,8 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
req_size += screen_size;
/* compress and copy colram to buf */
if(c->mc_use_5col) {
a64_compress_colram(buf,charmap,colram);
if (c->mc_use_5col) {
a64_compress_colram(buf, charmap, colram);
/* advance pointers */
buf += colram_size;
req_size += colram_size;
......@@ -346,9 +346,9 @@ static int a64multi_encode_frame(AVCodecContext *avctx, unsigned char *buf,
charmap += 1000;
}
AV_WB32(avctx->extradata+4, c->mc_frame_counter);
AV_WB32(avctx->extradata+8, charset_size);
AV_WB32(avctx->extradata+12, screen_size + colram_size);
AV_WB32(avctx->extradata + 4, c->mc_frame_counter);
AV_WB32(avctx->extradata + 8, charset_size);
AV_WB32(avctx->extradata + 12, screen_size + colram_size);
/* reset counter */
c->mc_frame_counter = 0;
......
libavformat/a64.c
View file @ 2a26520a
......@@ -86,7 +86,7 @@ static int a64_write_packet(struct AVFormatContext *s, AVPacket *pkt)
* the data for colram from/to ram first and waste too much time. If we interleave and send the
* charset beforehand, we assemble a new charset chunk by chunk, write current screen data to
* screen-ram to be displayed and decode the colram directly to colram-location $d800 during
* the overscan, while reading directly from source
* the overscan, while reading directly from source.
* This is the only way so far, to achieve 25fps on c64 */
if(avctx->extradata) {
/* fetch values from extradata */
......@@ -96,33 +96,35 @@ static int a64_write_packet(struct AVFormatContext *s, AVPacket *pkt)
frame_size = AV_RB32(avctx->extradata + 12);
/* TODO: sanity checks? */
}
else {
} else {
av_log(avctx, AV_LOG_ERROR, "extradata not set\n");
return AVERROR(EINVAL);
}
ch_chunksize=charset_size/lifetime;
/* TODO: check if charset/size is % lifetime, but maybe check in codec */
if(pkt->data) num_frames = lifetime;
else num_frames = c->prev_frame_count;
for(i = 0; i < num_frames; i++) {
if(pkt->data) {
/* if available, put newest charset chunk into buffer */
put_buffer(s->pb, pkt->data + ch_chunksize * i, ch_chunksize);
}
else {
} else {
/* a bit ugly, but is there an alternative to put many zeros? */
for(j = 0; j < ch_chunksize; j++) put_byte(s->pb, 0);
}
if(c->prev_pkt.data) {
/* put frame (screen + colram) from last packet into buffer */
put_buffer(s->pb, c->prev_pkt.data + charset_size + frame_size * i, frame_size);
}
else {
} else {
/* a bit ugly, but is there an alternative to put many zeros? */
for(j = 0; j < frame_size; j++) put_byte(s->pb, 0);
}
}
/* backup current packet for next turn */
if(pkt->data) {
/* no backup packet yet? create one! */
......@@ -136,6 +138,7 @@ static int a64_write_packet(struct AVFormatContext *s, AVPacket *pkt)
return AVERROR(ENOMEM);
}
}
c->prev_frame_count = frame_count;
break;
}
......
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