#include <stdio.h>
#include <stdlib.h>
+#include "libavutil/channel_layout.h"
#include "avcodec.h"
-#include "libavutil/audioconvert.h"
+#include "internal.h"
#include "mathops.h"
#define BITSTREAM_READER_LE
*/
typedef struct SmackVContext {
AVCodecContext *avctx;
- AVFrame pic;
+ AVFrame *pic;
int *mmap_tbl, *mclr_tbl, *full_tbl, *type_tbl;
int mmap_last[3], mclr_last[3], full_last[3], type_last[3];
return -1;
}
if(!get_bits1(gb)){ //Leaf
- int val, i1, i2, b1, b2;
- b1 = get_bits_count(gb);
+ int val, i1, i2;
i1 = ctx->v1->table ? get_vlc2(gb, ctx->v1->table, SMKTREE_BITS, 3) : 0;
- b1 = get_bits_count(gb) - b1;
- b2 = get_bits_count(gb);
i2 = ctx->v2->table ? get_vlc2(gb, ctx->v2->table, SMKTREE_BITS, 3) : 0;
- b2 = get_bits_count(gb) - b2;
if (i1 < 0 || i2 < 0)
return -1;
val = ctx->recode1[i1] | (ctx->recode2[i2] << 8);
int res;
HuffContext huff;
HuffContext tmp1, tmp2;
- VLC vlc[2];
+ VLC vlc[2] = { { 0 } };
int escapes[3];
DBCtx ctx;
int err = 0;
tmp2.bits = av_mallocz(256 * 4);
tmp2.lengths = av_mallocz(256 * sizeof(int));
tmp2.values = av_mallocz(256 * sizeof(int));
-
- memset(&vlc[0], 0, sizeof(VLC));
- memset(&vlc[1], 0, sizeof(VLC));
+ if (!tmp1.bits || !tmp1.lengths || !tmp1.values ||
+ !tmp2.bits || !tmp2.lengths || !tmp2.values) {
+ err = AVERROR(ENOMEM);
+ goto error;
+ }
if(get_bits1(gb)) {
smacker_decode_tree(gb, &tmp1, 0, 0);
tmp1.bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
if(res < 0) {
av_log(smk->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
- return -1;
+ err = res;
+ goto error;
}
} else {
av_log(smk->avctx, AV_LOG_ERROR, "Skipping low bytes tree\n");
tmp2.bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
if(res < 0) {
av_log(smk->avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
- return -1;
+ err = res;
+ goto error;
}
} else {
av_log(smk->avctx, AV_LOG_ERROR, "Skipping high bytes tree\n");
ctx.recode2 = tmp2.values;
ctx.last = last;
- huff.length = ((size + 3) >> 2) + 3;
+ huff.length = ((size + 3) >> 2) + 4;
huff.maxlength = 0;
huff.current = 0;
huff.values = av_mallocz(huff.length * sizeof(int));
+ if (!huff.values) {
+ err = AVERROR(ENOMEM);
+ goto error;
+ }
if (smacker_decode_bigtree(gb, &huff, &ctx) < 0)
err = -1;
if(ctx.last[0] == -1) ctx.last[0] = huff.current++;
if(ctx.last[1] == -1) ctx.last[1] = huff.current++;
if(ctx.last[2] == -1) ctx.last[2] = huff.current++;
+ if (ctx.last[0] >= huff.length ||
+ ctx.last[1] >= huff.length ||
+ ctx.last[2] >= huff.length) {
+ av_log(smk->avctx, AV_LOG_ERROR, "Huffman codes out of range\n");
+ err = AVERROR_INVALIDDATA;
+ }
*recodes = huff.values;
+error:
if(vlc[0].table)
- free_vlc(&vlc[0]);
+ ff_free_vlc(&vlc[0]);
if(vlc[1].table)
- free_vlc(&vlc[1]);
+ ff_free_vlc(&vlc[1]);
av_free(tmp1.bits);
av_free(tmp1.lengths);
av_free(tmp1.values);
if(!get_bits1(&gb)) {
av_log(smk->avctx, AV_LOG_INFO, "Skipping MMAP tree\n");
smk->mmap_tbl = av_malloc(sizeof(int) * 2);
+ if (!smk->mmap_tbl)
+ return AVERROR(ENOMEM);
smk->mmap_tbl[0] = 0;
smk->mmap_last[0] = smk->mmap_last[1] = smk->mmap_last[2] = 1;
} else {
if(!get_bits1(&gb)) {
av_log(smk->avctx, AV_LOG_INFO, "Skipping MCLR tree\n");
smk->mclr_tbl = av_malloc(sizeof(int) * 2);
+ if (!smk->mclr_tbl)
+ return AVERROR(ENOMEM);
smk->mclr_tbl[0] = 0;
smk->mclr_last[0] = smk->mclr_last[1] = smk->mclr_last[2] = 1;
} else {
if(!get_bits1(&gb)) {
av_log(smk->avctx, AV_LOG_INFO, "Skipping FULL tree\n");
smk->full_tbl = av_malloc(sizeof(int) * 2);
+ if (!smk->full_tbl)
+ return AVERROR(ENOMEM);
smk->full_tbl[0] = 0;
smk->full_last[0] = smk->full_last[1] = smk->full_last[2] = 1;
} else {
if(!get_bits1(&gb)) {
av_log(smk->avctx, AV_LOG_INFO, "Skipping TYPE tree\n");
smk->type_tbl = av_malloc(sizeof(int) * 2);
+ if (!smk->type_tbl)
+ return AVERROR(ENOMEM);
smk->type_tbl[0] = 0;
smk->type_last[0] = smk->type_last[1] = smk->type_last[2] = 1;
} else {
return v;
}
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
+static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
+ AVPacket *avpkt)
{
- const uint8_t *buf = avpkt->data;
- int buf_size = avpkt->size;
SmackVContext * const smk = avctx->priv_data;
uint8_t *out;
uint32_t *pal;
+ GetByteContext gb2;
GetBitContext gb;
int blocks, blk, bw, bh;
- int i;
+ int i, ret;
int stride;
+ int flags;
- if(buf_size <= 769)
+ if (avpkt->size <= 769)
return 0;
- smk->pic.reference = 1;
- smk->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
- if(avctx->reget_buffer(avctx, &smk->pic) < 0){
+ if ((ret = ff_reget_buffer(avctx, smk->pic)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
+ return ret;
}
/* make the palette available on the way out */
- pal = (uint32_t*)smk->pic.data[1];
- smk->pic.palette_has_changed = buf[0] & 1;
- smk->pic.key_frame = !!(buf[0] & 2);
- if(smk->pic.key_frame)
- smk->pic.pict_type = AV_PICTURE_TYPE_I;
+ pal = (uint32_t*)smk->pic->data[1];
+ bytestream2_init(&gb2, avpkt->data, avpkt->size);
+ flags = bytestream2_get_byteu(&gb2);
+ smk->pic->palette_has_changed = flags & 1;
+ smk->pic->key_frame = !!(flags & 2);
+ if(smk->pic->key_frame)
+ smk->pic->pict_type = AV_PICTURE_TYPE_I;
else
- smk->pic.pict_type = AV_PICTURE_TYPE_P;
+ smk->pic->pict_type = AV_PICTURE_TYPE_P;
- buf++;
for(i = 0; i < 256; i++)
- *pal++ = bytestream_get_be24(&buf);
- buf_size -= 769;
+ *pal++ = bytestream2_get_be24u(&gb2);
last_reset(smk->mmap_tbl, smk->mmap_last);
last_reset(smk->mclr_tbl, smk->mclr_last);
last_reset(smk->full_tbl, smk->full_last);
last_reset(smk->type_tbl, smk->type_last);
- init_get_bits(&gb, buf, buf_size * 8);
+ init_get_bits(&gb, avpkt->data + 769, (avpkt->size - 769) * 8);
blk = 0;
bw = avctx->width >> 2;
bh = avctx->height >> 2;
blocks = bw * bh;
- out = smk->pic.data[0];
- stride = smk->pic.linesize[0];
+ out = smk->pic->data[0];
+ stride = smk->pic->linesize[0];
while(blk < blocks) {
int type, run, mode;
uint16_t pix;
int hi, lo;
clr = smk_get_code(&gb, smk->mclr_tbl, smk->mclr_last);
map = smk_get_code(&gb, smk->mmap_tbl, smk->mmap_last);
- out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
+ out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
hi = clr >> 8;
lo = clr & 0xFF;
for(i = 0; i < 4; i++) {
else if(get_bits1(&gb)) mode = 2;
}
while(run-- && blk < blocks){
- out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
+ out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
switch(mode){
case 0:
for(i = 0; i < 4; i++) {
mode = type >> 8;
while(run-- && blk < blocks){
uint32_t col;
- out = smk->pic.data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
+ out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4;
col = mode * 0x01010101;
for(i = 0; i < 4; i++) {
*((uint32_t*)out) = col;
}
- *data_size = sizeof(AVFrame);
- *(AVFrame*)data = smk->pic;
+ if ((ret = av_frame_ref(data, smk->pic)) < 0)
+ return ret;
+
+ *got_frame = 1;
/* always report that the buffer was completely consumed */
- return buf_size;
+ return avpkt->size;
}
+/*
+ *
+ * Uninit smacker decoder
+ *
+ */
+static av_cold int decode_end(AVCodecContext *avctx)
+{
+ SmackVContext * const smk = avctx->priv_data;
+
+ av_freep(&smk->mmap_tbl);
+ av_freep(&smk->mclr_tbl);
+ av_freep(&smk->full_tbl);
+ av_freep(&smk->type_tbl);
+
+ av_frame_free(&smk->pic);
+
+ return 0;
+}
+
+
/*
*
* Init smacker decoder
c->avctx = avctx;
- avctx->pix_fmt = PIX_FMT_PAL8;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
+ c->pic = av_frame_alloc();
+ if (!c->pic)
+ return AVERROR(ENOMEM);
/* decode huffman trees from extradata */
if(avctx->extradata_size < 16){
return -1;
}
- if (decode_header_trees(c))
+ if (decode_header_trees(c)) {
+ decode_end(avctx);
return -1;
+ }
return 0;
}
-/*
- *
- * Uninit smacker decoder
- *
- */
-static av_cold int decode_end(AVCodecContext *avctx)
-{
- SmackVContext * const smk = avctx->priv_data;
-
- av_freep(&smk->mmap_tbl);
- av_freep(&smk->mclr_tbl);
- av_freep(&smk->full_tbl);
- av_freep(&smk->type_tbl);
-
- if (smk->pic.data[0])
- avctx->release_buffer(avctx, &smk->pic);
-
- return 0;
-}
-
-
-typedef struct SmackerAudioContext {
- AVFrame frame;
-} SmackerAudioContext;
-
static av_cold int smka_decode_init(AVCodecContext *avctx)
{
- SmackerAudioContext *s = avctx->priv_data;
-
if (avctx->channels < 1 || avctx->channels > 2) {
av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n");
return AVERROR(EINVAL);
avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
avctx->sample_fmt = avctx->bits_per_coded_sample == 8 ? AV_SAMPLE_FMT_U8 : AV_SAMPLE_FMT_S16;
- avcodec_get_frame_defaults(&s->frame);
- avctx->coded_frame = &s->frame;
-
return 0;
}
static int smka_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
- SmackerAudioContext *s = avctx->priv_data;
+ AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
GetBitContext gb;
- HuffContext h[4];
- VLC vlc[4];
+ HuffContext h[4] = { { 0 } };
+ VLC vlc[4] = { { 0 } };
int16_t *samples;
uint8_t *samples8;
int val;
}
/* get output buffer */
- s->frame.nb_samples = unp_size / (avctx->channels * (bits + 1));
- if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+ frame->nb_samples = unp_size / (avctx->channels * (bits + 1));
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
- samples = (int16_t *)s->frame.data[0];
- samples8 = s->frame.data[0];
+ samples = (int16_t *)frame->data[0];
+ samples8 = frame->data[0];
- memset(vlc, 0, sizeof(VLC) * 4);
- memset(h, 0, sizeof(HuffContext) * 4);
// Initialize
for(i = 0; i < (1 << (bits + stereo)); i++) {
h[i].length = 256;
h[i].bits = av_mallocz(256 * 4);
h[i].lengths = av_mallocz(256 * sizeof(int));
h[i].values = av_mallocz(256 * sizeof(int));
+ if (!h[i].bits || !h[i].lengths || !h[i].values) {
+ ret = AVERROR(ENOMEM);
+ goto error;
+ }
skip_bits1(&gb);
- smacker_decode_tree(&gb, &h[i], 0, 0);
+ if (smacker_decode_tree(&gb, &h[i], 0, 0) < 0) {
+ ret = AVERROR_INVALIDDATA;
+ goto error;
+ }
skip_bits1(&gb);
if(h[i].current > 1) {
res = init_vlc(&vlc[i], SMKTREE_BITS, h[i].length,
h[i].bits, sizeof(uint32_t), sizeof(uint32_t), INIT_VLC_LE);
if(res < 0) {
av_log(avctx, AV_LOG_ERROR, "Cannot build VLC table\n");
- return -1;
+ ret = AVERROR_INVALIDDATA;
+ goto error;
}
}
}
+ /* this codec relies on wraparound instead of clipping audio */
if(bits) { //decode 16-bit data
for(i = stereo; i >= 0; i--)
- pred[i] = av_bswap16(get_bits(&gb, 16));
+ pred[i] = sign_extend(av_bswap16(get_bits(&gb, 16)), 16);
for(i = 0; i <= stereo; i++)
*samples++ = pred[i];
for(; i < unp_size / 2; i++) {
res = 0;
val |= h[3].values[res] << 8;
pred[1] += sign_extend(val, 16);
- *samples++ = av_clip_int16(pred[1]);
+ *samples++ = pred[1];
} else {
if(vlc[0].table)
res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
res = 0;
val |= h[1].values[res] << 8;
pred[0] += sign_extend(val, 16);
- *samples++ = av_clip_int16(pred[0]);
+ *samples++ = pred[0];
}
}
} else { //8-bit data
else
res = 0;
pred[1] += sign_extend(h[1].values[res], 8);
- *samples8++ = av_clip_uint8(pred[1]);
+ *samples8++ = pred[1];
} else {
if(vlc[0].table)
res = get_vlc2(&gb, vlc[0].table, SMKTREE_BITS, 3);
else
res = 0;
pred[0] += sign_extend(h[0].values[res], 8);
- *samples8++ = av_clip_uint8(pred[0]);
+ *samples8++ = pred[0];
}
}
}
+ *got_frame_ptr = 1;
+ ret = buf_size;
+
+error:
for(i = 0; i < 4; i++) {
if(vlc[i].table)
- free_vlc(&vlc[i]);
+ ff_free_vlc(&vlc[i]);
av_free(h[i].bits);
av_free(h[i].lengths);
av_free(h[i].values);
}
- *got_frame_ptr = 1;
- *(AVFrame *)data = s->frame;
-
- return buf_size;
+ return ret;
}
AVCodec ff_smacker_decoder = {
.name = "smackvid",
+ .long_name = NULL_IF_CONFIG_SMALL("Smacker video"),
.type = AVMEDIA_TYPE_VIDEO,
- .id = CODEC_ID_SMACKVIDEO,
+ .id = AV_CODEC_ID_SMACKVIDEO,
.priv_data_size = sizeof(SmackVContext),
.init = decode_init,
.close = decode_end,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Smacker video"),
};
AVCodec ff_smackaud_decoder = {
.name = "smackaud",
+ .long_name = NULL_IF_CONFIG_SMALL("Smacker audio"),
.type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_SMACKAUDIO,
- .priv_data_size = sizeof(SmackerAudioContext),
+ .id = AV_CODEC_ID_SMACKAUDIO,
.init = smka_decode_init,
.decode = smka_decode_frame,
.capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("Smacker audio"),
};
-
projects / ffmpeg / blobdiff