static void ff_amf_tag_contents(void *ctx, const uint8_t *data, const uint8_t *data_end)
{
unsigned int size;
char buf[1024];
if (data >= data_end)
return;
switch (*data++) {
case AMF_DATA_TYPE_NUMBER:
av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2dbl(AV_RB64(data)));
return;
case AMF_DATA_TYPE_BOOL:
av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
return;
case AMF_DATA_TYPE_STRING:
case AMF_DATA_TYPE_LONG_STRING:
if (data[-1] == AMF_DATA_TYPE_STRING) {
size = bytestream_get_be16(&data);
} else {
size = bytestream_get_be32(&data);
}
size = FFMIN(size, sizeof(buf) - 1);
memcpy(buf, data, size);
buf[size] = 0;
av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
return;
case AMF_DATA_TYPE_NULL:
av_log(ctx, AV_LOG_DEBUG, " NULL\n");
return;
case AMF_DATA_TYPE_ARRAY:
data += 4;
case AMF_DATA_TYPE_OBJECT:
av_log(ctx, AV_LOG_DEBUG, " {\n");
for (;;) {
int t;
size = bytestream_get_be16(&data);
av_strlcpy(buf, data, FFMIN(sizeof(buf), size + 1));
if (!size) {
av_log(ctx, AV_LOG_DEBUG, " }\n");
data++;
break;
}
if (size >= data_end - data)
return;
data += size;
av_log(ctx, AV_LOG_DEBUG, " %s: ", buf);
ff_amf_tag_contents(ctx, data, data_end);
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return;
data += t;
}
return;
case AMF_DATA_TYPE_OBJECT_END:
av_log(ctx, AV_LOG_DEBUG, " }\n");
return;
default:
return;
}
}
/**
* Parse the presentation segment packet.
*
* The presentation segment contains details on the video
* width, video height, x & y subtitle position.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Implement cropping
* @todo TODO: Implement forcing of subtitles
* @todo TODO: Blanking of subtitle
*/
static void parse_presentation_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
int x, y;
uint8_t block;
int w = bytestream_get_be16(&buf);
int h = bytestream_get_be16(&buf);
dprintf(avctx, "Video Dimensions %dx%d\n",
w, h);
if (av_image_check_size(w, h, 0, avctx) >= 0)
avcodec_set_dimensions(avctx, w, h);
/* Skip 1 bytes of unknown, frame rate? */
buf++;
ctx->presentation.id_number = bytestream_get_be16(&buf);
/* Next byte is the state. */
block = bytestream_get_byte(&buf);;
if (block == 0x80) {
/*
* Skip 7 bytes of unknown:
* palette_update_flag (0x80),
* palette_id_to_use,
* Object Number (if > 0 determines if more data to process),
* object_id_ref (2 bytes),
* window_id_ref,
* composition_flag (0x80 - object cropped, 0x40 - object forced)
*/
buf += 7;
x = bytestream_get_be16(&buf);
y = bytestream_get_be16(&buf);
/* TODO If cropping, cropping_x, cropping_y, cropping_width, cropping_height (all 2 bytes).*/
dprintf(avctx, "Subtitle Placement x=%d, y=%d\n", x, y);
if (x > avctx->width || y > avctx->height) {
av_log(avctx, AV_LOG_ERROR, "Subtitle out of video bounds. x = %d, y = %d, video width = %d, video height = %d.\n",
x, y, avctx->width, avctx->height);
x = 0; y = 0;
}
/* Fill in dimensions */
ctx->presentation.x = x;
ctx->presentation.y = y;
} else if (block == 0x00) {
/* TODO: Blank context as subtitle should not be displayed.
* If the subtitle is blanked now the subtitle is not
* on screen long enough to read, due to a delay in
* initial display timing.
*/
}
}
/**
* Parse the presentation segment packet.
*
* The presentation segment contains details on the video
* width, video height, x & y subtitle position.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Implement cropping
* @todo TODO: Implement forcing of subtitles
*/
static void parse_presentation_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
int x, y;
int w = bytestream_get_be16(&buf);
int h = bytestream_get_be16(&buf);
av_dlog(avctx, "Video Dimensions %dx%d\n",
w, h);
if (av_image_check_size(w, h, 0, avctx) >= 0)
avcodec_set_dimensions(avctx, w, h);
/* Skip 1 bytes of unknown, frame rate? */
buf++;
ctx->presentation.id_number = bytestream_get_be16(&buf);
/*
* Skip 3 bytes of unknown:
* state
* palette_update_flag (0x80),
* palette_id_to_use,
*/
buf += 3;
ctx->presentation.object_number = bytestream_get_byte(&buf);
if (!ctx->presentation.object_number)
return;
/*
* Skip 4 bytes of unknown:
* object_id_ref (2 bytes),
* window_id_ref,
* composition_flag (0x80 - object cropped, 0x40 - object forced)
*/
buf += 4;
x = bytestream_get_be16(&buf);
y = bytestream_get_be16(&buf);
/* TODO If cropping, cropping_x, cropping_y, cropping_width, cropping_height (all 2 bytes).*/
av_dlog(avctx, "Subtitle Placement x=%d, y=%d\n", x, y);
if (x > avctx->width || y > avctx->height)
{
av_log(avctx, AV_LOG_ERROR, "Subtitle out of video bounds. x = %d, y = %d, video width = %d, video height = %d.\n",
x, y, avctx->width, avctx->height);
x = 0;
y = 0;
}
/* Fill in dimensions */
ctx->presentation.x = x;
ctx->presentation.y = y;
}
/**
* Parses the picture segment packet.
*
* The picture segment contains details on the sequence id,
* width, height and Run Length Encoded (RLE) bitmap data.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Enable support for RLE data over multiple packets
*/
static int parse_picture_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
uint8_t sequence_desc;
unsigned int rle_bitmap_len, width, height;
/* skip 3 unknown bytes: Object ID (2 bytes), Version Number */
buf += 3;
/* Read the Sequence Description to determine if start of RLE data or appended to previous RLE */
sequence_desc = bytestream_get_byte(&buf);
if (!(sequence_desc & 0x80)) {
av_log(avctx, AV_LOG_ERROR, "Decoder does not support object data over multiple packets.\n");
return -1;
}
/* Decode rle bitmap length */
rle_bitmap_len = bytestream_get_be24(&buf);
/* Check to ensure we have enough data for rle_bitmap_length if just a single packet */
if (rle_bitmap_len > buf_size - 7) {
av_log(avctx, AV_LOG_ERROR, "Not enough RLE data for specified length of %d.\n", rle_bitmap_len);
return -1;
}
ctx->picture.rle_data_len = rle_bitmap_len;
/* Get bitmap dimensions from data */
width = bytestream_get_be16(&buf);
height = bytestream_get_be16(&buf);
/* Make sure the bitmap is not too large */
if (ctx->presentation.video_w < width || ctx->presentation.video_h < height) {
av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger then video.\n");
return -1;
}
ctx->picture.w = width;
ctx->picture.h = height;
av_fast_malloc(&ctx->picture.rle, &ctx->picture.rle_buffer_size, rle_bitmap_len);
if (!ctx->picture.rle)
return -1;
memcpy(ctx->picture.rle, buf, rle_bitmap_len);
return 0;
}
int ff_amf_get_field_value(const uint8_t *data, const uint8_t *data_end,
const uint8_t *name, uint8_t *dst, int dst_size)
{
int namelen = strlen((char *)name);
int len;
while (*data != AMF_DATA_TYPE_OBJECT && data < data_end)
{
len = ff_amf_tag_size(data, data_end);
if (len < 0)
len = data_end - data;
data += len;
}
if (data_end - data < 3)
return -1;
data++;
for (;;)
{
int size = bytestream_get_be16(&data);
if (!size)
break;
if (data + size >= data_end || data + size < data)
return -1;
data += size;
if (size == namelen && !memcmp(data-size, name, namelen))
{
switch (*data++)
{
case AMF_DATA_TYPE_NUMBER:
snprintf((char *)dst, dst_size, "%g", av_int2dbl(AV_RB64(data)));
break;
case AMF_DATA_TYPE_BOOL:
snprintf((char *)dst, dst_size, "%s", *data ? "true" : "false");
break;
case AMF_DATA_TYPE_STRING:
len = bytestream_get_be16(&data);
av_strlcpy((char *)dst, (const char*)data, FFMIN(len+1, dst_size));
break;
default:
return -1;
}
return 0;
}
len = ff_amf_tag_size(data, data_end);
if (len < 0 || data + len >= data_end || data + len < data)
return -1;
data += len;
}
return -1;
}
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
{
const uint8_t *base = data;
if (data >= data_end)
return -1;
switch (*data++) {
case AMF_DATA_TYPE_NUMBER: return 9;
case AMF_DATA_TYPE_BOOL: return 2;
case AMF_DATA_TYPE_STRING: return 3 + AV_RB16(data);
case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data);
case AMF_DATA_TYPE_NULL: return 1;
case AMF_DATA_TYPE_ARRAY:
data += 4;
case AMF_DATA_TYPE_OBJECT:
for (;;) {
int size = bytestream_get_be16(&data);
int t;
if (!size) {
data++;
break;
}
if (size < 0 || size >= data_end - data)
return -1;
data += size;
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return -1;
data += t;
}
return data - base;
case AMF_DATA_TYPE_OBJECT_END: return 1;
default: return -1;
}
}
static int alac_set_info(ALACContext *alac)
{
const unsigned char *ptr = alac->avctx->extradata;
ptr += 4; /* size */
ptr += 4; /* alac */
ptr += 4; /* 0 ? */
if(AV_RB32(ptr) >= UINT_MAX/4){
av_log(alac->avctx, AV_LOG_ERROR, "setinfo_max_samples_per_frame too large\n");
return -1;
}
/* buffer size / 2 ? */
alac->setinfo_max_samples_per_frame = bytestream_get_be32(&ptr);
alac->setinfo_7a = *ptr++;
alac->setinfo_sample_size = *ptr++;
alac->setinfo_rice_historymult = *ptr++;
alac->setinfo_rice_initialhistory = *ptr++;
alac->setinfo_rice_kmodifier = *ptr++;
/* channels? */
alac->setinfo_7f = *ptr++;
alac->setinfo_80 = bytestream_get_be16(&ptr);
/* max coded frame size */
alac->setinfo_82 = bytestream_get_be32(&ptr);
/* bitrate ? */
alac->setinfo_86 = bytestream_get_be32(&ptr);
/* samplerate */
alac->setinfo_8a_rate = bytestream_get_be32(&ptr);
allocate_buffers(alac);
return 0;
}
int ff_amf_match_string(const uint8_t *data, int size, const char *str)
{
int len = strlen(str);
int amf_len, type;
if (size < 1)
return 0;
type = *data++;
if (type != AMF_DATA_TYPE_LONG_STRING &&
type != AMF_DATA_TYPE_STRING)
return 0;
if (type == AMF_DATA_TYPE_LONG_STRING) {
if ((size -= 4 + 1) < 0)
return 0;
amf_len = bytestream_get_be32(&data);
} else {
if ((size -= 2 + 1) < 0)
return 0;
amf_len = bytestream_get_be16(&data);
}
if (amf_len > size)
return 0;
if (amf_len != len)
return 0;
return !memcmp(data, str, len);
}
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf,
int buf_size)
{
/* cast to avoid compiler warning */
ff_init_range_encoder(c, (uint8_t *)buf, buf_size);
c->low = bytestream_get_be16((const uint8_t **)&c->bytestream);
}
static int dts_probe(AVProbeData *p)
{
const uint8_t *buf, *bufp;
uint32_t state = -1;
int markers[3] = {0};
int sum, max;
int64_t diff = 0;
buf = p->buf;
for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
bufp = buf;
state = (state << 16) | bytestream_get_be16(&bufp);
/* regular bitstream */
if (state == DCA_MARKER_RAW_BE || state == DCA_MARKER_RAW_LE)
markers[0]++;
/* 14 bits big-endian bitstream */
if (state == DCA_MARKER_14B_BE)
if ((bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
markers[1]++;
/* 14 bits little-endian bitstream */
if (state == DCA_MARKER_14B_LE)
if ((bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
markers[2]++;
if (buf - p->buf >= 4)
diff += FFABS(AV_RL16(buf) - AV_RL16(buf-4));
}
sum = markers[0] + markers[1] + markers[2];
max = markers[1] > markers[0];
max = markers[2] > markers[max] ? 2 : max;
if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
markers[max] * 4 > sum * 3 &&
diff / p->buf_size > 200)
return AVPROBE_SCORE_EXTENSION + 1;
return 0;
}
int ff_amf_tag_size(const uint8_t *data, const uint8_t *data_end)
{
const uint8_t *base = data;
AMFDataType type;
unsigned nb = -1;
int parse_key = 1;
if (data >= data_end)
return -1;
switch ((type = *data++)) {
case AMF_DATA_TYPE_NUMBER: return 9;
case AMF_DATA_TYPE_BOOL: return 2;
case AMF_DATA_TYPE_STRING: return 3 + AV_RB16(data);
case AMF_DATA_TYPE_LONG_STRING: return 5 + AV_RB32(data);
case AMF_DATA_TYPE_NULL: return 1;
case AMF_DATA_TYPE_ARRAY:
parse_key = 0;
case AMF_DATA_TYPE_MIXEDARRAY:
nb = bytestream_get_be32(&data);
case AMF_DATA_TYPE_OBJECT:
while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) {
int t;
if (parse_key) {
int size = bytestream_get_be16(&data);
if (!size) {
data++;
break;
}
if (size < 0 || size >= data_end - data)
return -1;
data += size;
}
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return -1;
data += t;
}
return data - base;
case AMF_DATA_TYPE_OBJECT_END: return 1;
default: return -1;
}
}
static int oggvorbis_decode_init(AVCodecContext *avccontext) {
OggVorbisDecContext *context = avccontext->priv_data ;
uint8_t *p= avccontext->extradata;
int i, hsizes[3];
unsigned char *headers[3], *extradata = avccontext->extradata;
vorbis_info_init(&context->vi) ;
vorbis_comment_init(&context->vc) ;
if(! avccontext->extradata_size || ! p) {
av_log(avccontext, AV_LOG_ERROR, "vorbis extradata absent\n");
return -1;
}
if(p[0] == 0 && p[1] == 30) {
for(i = 0; i < 3; i++){
hsizes[i] = bytestream_get_be16((const uint8_t **)&p);
headers[i] = p;
p += hsizes[i];
}
} else if(*p == 2) {
unsigned int offset = 1;
p++;
for(i=0; i<2; i++) {
hsizes[i] = 0;
while((*p == 0xFF) && (offset < avccontext->extradata_size)) {
hsizes[i] += 0xFF;
offset++;
p++;
}
if(offset >= avccontext->extradata_size - 1) {
av_log(avccontext, AV_LOG_ERROR,
"vorbis header sizes damaged\n");
return -1;
}
hsizes[i] += *p;
offset++;
p++;
}
hsizes[2] = avccontext->extradata_size - hsizes[0]-hsizes[1]-offset;
#if 0
av_log(avccontext, AV_LOG_DEBUG,
"vorbis header sizes: %d, %d, %d, / extradata_len is %d \n",
hsizes[0], hsizes[1], hsizes[2], avccontext->extradata_size);
#endif
headers[0] = extradata + offset;
headers[1] = extradata + offset + hsizes[0];
headers[2] = extradata + offset + hsizes[0] + hsizes[1];
} else {
av_log(avccontext, AV_LOG_ERROR,
"vorbis initial header len is wrong: %d\n", *p);
return -1;
}
for(i=0; i<3; i++){
context->op.b_o_s= i==0;
context->op.bytes = hsizes[i];
context->op.packet = headers[i];
if(vorbis_synthesis_headerin(&context->vi, &context->vc, &context->op)<0){
av_log(avccontext, AV_LOG_ERROR, "%d. vorbis header damaged\n", i+1);
return -1;
}
}
avccontext->channels = context->vi.channels;
avccontext->sample_rate = context->vi.rate;
avccontext->sample_fmt = AV_SAMPLE_FMT_S16;
avccontext->time_base= (AVRational){1, avccontext->sample_rate};
vorbis_synthesis_init(&context->vd, &context->vi);
vorbis_block_init(&context->vd, &context->vb);
return 0 ;
}
/**
* Parse the presentation segment packet.
*
* The presentation segment contains details on the video
* width, video height, x & y subtitle position.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Implement cropping
*/
static void parse_presentation_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
int w = bytestream_get_be16(&buf);
int h = bytestream_get_be16(&buf);
uint16_t object_index;
av_dlog(avctx, "Video Dimensions %dx%d\n",
w, h);
if (av_image_check_size(w, h, 0, avctx) >= 0)
avcodec_set_dimensions(avctx, w, h);
/* Skip 1 bytes of unknown, frame rate? */
buf++;
ctx->presentation.id_number = bytestream_get_be16(&buf);
/*
* Skip 3 bytes of unknown:
* state
* palette_update_flag (0x80),
* palette_id_to_use,
*/
buf += 3;
ctx->presentation.object_count = bytestream_get_byte(&buf);
if (!ctx->presentation.object_count)
return;
/* Verify that enough bytes are remaining for all of the objects. */
buf_size -= 11;
if (buf_size < ctx->presentation.object_count * 8) {
ctx->presentation.object_count = 0;
return;
}
av_freep(&ctx->presentation.objects);
ctx->presentation.objects = av_malloc(sizeof(PGSSubPictureReference) * ctx->presentation.object_count);
if (!ctx->presentation.objects) {
ctx->presentation.object_count = 0;
return;
}
for (object_index = 0; object_index < ctx->presentation.object_count; ++object_index) {
PGSSubPictureReference *reference = &ctx->presentation.objects[object_index];
reference->picture_id = bytestream_get_be16(&buf);
/*
* Skip 2 bytes of unknown:
* window_id_ref,
* composition_flag (0x80 - object cropped, 0x40 - object forced)
*/
buf++;
reference->composition = bytestream_get_byte(&buf);
reference->x = bytestream_get_be16(&buf);
reference->y = bytestream_get_be16(&buf);
/* TODO If cropping, cropping_x, cropping_y, cropping_width, cropping_height (all 2 bytes).*/
av_dlog(avctx, "Subtitle Placement ID=%d, x=%d, y=%d\n", reference->picture_id, reference->x, reference->y);
if (reference->x > avctx->width || reference->y > avctx->height) {
av_log(avctx, AV_LOG_ERROR, "Subtitle out of video bounds. x = %d, y = %d, video width = %d, video height = %d.\n",
reference->x, reference->y, avctx->width, avctx->height);
reference->x = 0;
reference->y = 0;
}
}
}
static int decode(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
const uint8_t *buf_end;
uint8_t segment_type;
int segment_length;
#ifdef DEBUG_PACKET_CONTENTS
int i;
av_log(avctx, AV_LOG_INFO, "PGS sub packet:\n");
for (i = 0; i < buf_size; i++) {
av_log(avctx, AV_LOG_INFO, "%02x ", buf[i]);
if (i % 16 == 15)
av_log(avctx, AV_LOG_INFO, "\n");
}
if (i & 15)
av_log(avctx, AV_LOG_INFO, "\n");
#endif
*data_size = 0;
/* Ensure that we have received at a least a segment code and segment length */
if (buf_size < 3)
return -1;
buf_end = buf + buf_size;
/* Step through buffer to identify segments */
while (buf < buf_end) {
segment_type = bytestream_get_byte(&buf);
segment_length = bytestream_get_be16(&buf);
av_dlog(avctx, "Segment Length %d, Segment Type %x\n", segment_length, segment_type);
if (segment_type != DISPLAY_SEGMENT && segment_length > buf_end - buf)
break;
switch (segment_type) {
case PALETTE_SEGMENT:
parse_palette_segment(avctx, buf, segment_length);
break;
case PICTURE_SEGMENT:
parse_picture_segment(avctx, buf, segment_length);
break;
case PRESENTATION_SEGMENT:
parse_presentation_segment(avctx, buf, segment_length);
break;
case WINDOW_SEGMENT:
/*
* Window Segment Structure (No new information provided):
* 2 bytes: Unkown,
* 2 bytes: X position of subtitle,
* 2 bytes: Y position of subtitle,
* 2 bytes: Width of subtitle,
* 2 bytes: Height of subtitle.
*/
break;
case DISPLAY_SEGMENT:
*data_size = display_end_segment(avctx, data, buf, segment_length);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown subtitle segment type 0x%x, length %d\n",
segment_type, segment_length);
break;
}
buf += segment_length;
}
return buf_size;
}
static int cook_decode_init(AVCodecContext *avctx)
{
COOKContext *q = avctx->priv_data;
const uint8_t *edata_ptr = avctx->extradata;
/* Take care of the codec specific extradata. */
if (avctx->extradata_size <= 0) {
av_log(avctx,AV_LOG_ERROR,"Necessary extradata missing!\n");
return -1;
} else {
/* 8 for mono, 16 for stereo, ? for multichannel
Swap to right endianness so we don't need to care later on. */
av_log(avctx,AV_LOG_DEBUG,"codecdata_length=%d\n",avctx->extradata_size);
if (avctx->extradata_size >= 8){
q->cookversion = bytestream_get_be32(&edata_ptr);
q->samples_per_frame = bytestream_get_be16(&edata_ptr);
q->subbands = bytestream_get_be16(&edata_ptr);
}
if (avctx->extradata_size >= 16){
bytestream_get_be32(&edata_ptr); //Unknown unused
q->js_subband_start = bytestream_get_be16(&edata_ptr);
q->js_vlc_bits = bytestream_get_be16(&edata_ptr);
}
}
/* Take data from the AVCodecContext (RM container). */
q->sample_rate = avctx->sample_rate;
q->nb_channels = avctx->channels;
q->bit_rate = avctx->bit_rate;
/* Initialize RNG. */
av_init_random(1, &q->random_state);
/* Initialize extradata related variables. */
q->samples_per_channel = q->samples_per_frame / q->nb_channels;
q->bits_per_subpacket = avctx->block_align * 8;
/* Initialize default data states. */
q->log2_numvector_size = 5;
q->total_subbands = q->subbands;
/* Initialize version-dependent variables */
av_log(NULL,AV_LOG_DEBUG,"q->cookversion=%x\n",q->cookversion);
q->joint_stereo = 0;
switch (q->cookversion) {
case MONO:
if (q->nb_channels != 1) {
av_log(avctx,AV_LOG_ERROR,"Container channels != 1, report sample!\n");
return -1;
}
av_log(avctx,AV_LOG_DEBUG,"MONO\n");
break;
case STEREO:
if (q->nb_channels != 1) {
q->bits_per_subpacket = q->bits_per_subpacket/2;
}
av_log(avctx,AV_LOG_DEBUG,"STEREO\n");
break;
case JOINT_STEREO:
if (q->nb_channels != 2) {
av_log(avctx,AV_LOG_ERROR,"Container channels != 2, report sample!\n");
return -1;
}
av_log(avctx,AV_LOG_DEBUG,"JOINT_STEREO\n");
if (avctx->extradata_size >= 16){
q->total_subbands = q->subbands + q->js_subband_start;
q->joint_stereo = 1;
}
if (q->samples_per_channel > 256) {
q->log2_numvector_size = 6;
}
if (q->samples_per_channel > 512) {
q->log2_numvector_size = 7;
}
break;
case MC_COOK:
av_log(avctx,AV_LOG_ERROR,"MC_COOK not supported!\n");
return -1;
break;
default:
av_log(avctx,AV_LOG_ERROR,"Unknown Cook version, report sample!\n");
return -1;
break;
}
/* Initialize variable relations */
q->numvector_size = (1 << q->log2_numvector_size);
/* Generate tables */
init_pow2table();
init_gain_table(q);
init_cplscales_table(q);
if (init_cook_vlc_tables(q) != 0)
return -1;
if(avctx->block_align >= UINT_MAX/2)
return -1;
/* Pad the databuffer with:
DECODE_BYTES_PAD1 or DECODE_BYTES_PAD2 for decode_bytes(),
FF_INPUT_BUFFER_PADDING_SIZE, for the bitstreamreader. */
if (q->nb_channels==2 && q->joint_stereo==0) {
q->decoded_bytes_buffer =
av_mallocz(avctx->block_align/2
+ DECODE_BYTES_PAD2(avctx->block_align/2)
+ FF_INPUT_BUFFER_PADDING_SIZE);
} else {
q->decoded_bytes_buffer =
av_mallocz(avctx->block_align
+ DECODE_BYTES_PAD1(avctx->block_align)
+ FF_INPUT_BUFFER_PADDING_SIZE);
}
if (q->decoded_bytes_buffer == NULL)
return -1;
q->gains1.now = q->gain_1;
q->gains1.previous = q->gain_2;
q->gains2.now = q->gain_3;
q->gains2.previous = q->gain_4;
/* Initialize transform. */
if ( init_cook_mlt(q) != 0 )
return -1;
/* Initialize COOK signal arithmetic handling */
if (1) {
q->scalar_dequant = scalar_dequant_float;
q->decouple = decouple_float;
q->imlt_window = imlt_window_float;
q->interpolate = interpolate_float;
q->saturate_output = saturate_output_float;
}
/* Try to catch some obviously faulty streams, othervise it might be exploitable */
if (q->total_subbands > 53) {
av_log(avctx,AV_LOG_ERROR,"total_subbands > 53, report sample!\n");
return -1;
}
if (q->subbands > 50) {
av_log(avctx,AV_LOG_ERROR,"subbands > 50, report sample!\n");
return -1;
}
if ((q->samples_per_channel == 256) || (q->samples_per_channel == 512) || (q->samples_per_channel == 1024)) {
} else {
av_log(avctx,AV_LOG_ERROR,"unknown amount of samples_per_channel = %d, report sample!\n",q->samples_per_channel);
return -1;
}
if ((q->js_vlc_bits > 6) || (q->js_vlc_bits < 0)) {
av_log(avctx,AV_LOG_ERROR,"q->js_vlc_bits = %d, only >= 0 and <= 6 allowed!\n",q->js_vlc_bits);
return -1;
}
avctx->sample_fmt = SAMPLE_FMT_S16;
#ifdef COOKDEBUG
dump_cook_context(q);
#endif
return 0;
}
static int dts_probe(AVProbeData *p)
{
const uint8_t *buf, *bufp;
uint32_t state = -1;
int markers[4*16] = {0};
int sum, max, i;
int64_t diff = 0;
uint8_t hdr[12 + FF_INPUT_BUFFER_PADDING_SIZE] = { 0 };
buf = p->buf + FFMIN(4096, p->buf_size);
for(; buf < (p->buf+p->buf_size)-2; buf+=2) {
int marker, sample_blocks, sample_rate, sr_code, framesize;
int lfe;
GetBitContext gb;
bufp = buf;
state = (state << 16) | bytestream_get_be16(&bufp);
if (buf - p->buf >= 4)
diff += FFABS(((int16_t)AV_RL16(buf)) - (int16_t)AV_RL16(buf-4));
/* regular bitstream */
if (state == DCA_SYNCWORD_CORE_BE)
marker = 0;
else if (state == DCA_SYNCWORD_CORE_LE)
marker = 1;
/* 14 bits big-endian bitstream */
else if (state == DCA_SYNCWORD_CORE_14B_BE &&
(bytestream_get_be16(&bufp) & 0xFFF0) == 0x07F0)
marker = 2;
/* 14 bits little-endian bitstream */
else if (state == DCA_SYNCWORD_CORE_14B_LE &&
(bytestream_get_be16(&bufp) & 0xF0FF) == 0xF007)
marker = 3;
else
continue;
if (avpriv_dca_convert_bitstream(buf-2, 12, hdr, 12) < 0)
continue;
init_get_bits(&gb, hdr, 96);
skip_bits_long(&gb, 39);
sample_blocks = get_bits(&gb, 7) + 1;
if (sample_blocks < 8)
continue;
framesize = get_bits(&gb, 14) + 1;
if (framesize < 95)
continue;
skip_bits(&gb, 6);
sr_code = get_bits(&gb, 4);
sample_rate = avpriv_dca_sample_rates[sr_code];
if (sample_rate == 0)
continue;
get_bits(&gb, 5);
if (get_bits(&gb, 1))
continue;
skip_bits_long(&gb, 9);
lfe = get_bits(&gb, 2);
if (lfe > 2)
continue;
marker += 4* sr_code;
markers[marker] ++;
}
sum = max = 0;
for (i=0; i<FF_ARRAY_ELEMS(markers); i++) {
sum += markers[i];
if (markers[max] < markers[i])
max = i;
}
if (markers[max] > 3 && p->buf_size / markers[max] < 32*1024 &&
markers[max] * 4 > sum * 3 &&
diff / p->buf_size > 200)
return AVPROBE_SCORE_EXTENSION + 1;
return 0;
}
static void amf_tag_contents(void *ctx, const uint8_t *data,
const uint8_t *data_end)
{
unsigned int size, nb = -1;
char buf[1024];
AMFDataType type;
int parse_key = 1;
if (data >= data_end)
return;
switch ((type = *data++)) {
case AMF_DATA_TYPE_NUMBER:
av_log(ctx, AV_LOG_DEBUG, " number %g\n", av_int2double(AV_RB64(data)));
return;
case AMF_DATA_TYPE_BOOL:
av_log(ctx, AV_LOG_DEBUG, " bool %d\n", *data);
return;
case AMF_DATA_TYPE_STRING:
case AMF_DATA_TYPE_LONG_STRING:
if (type == AMF_DATA_TYPE_STRING) {
size = bytestream_get_be16(&data);
} else {
size = bytestream_get_be32(&data);
}
size = FFMIN(size, sizeof(buf) - 1);
memcpy(buf, data, size);
buf[size] = 0;
av_log(ctx, AV_LOG_DEBUG, " string '%s'\n", buf);
return;
case AMF_DATA_TYPE_NULL:
av_log(ctx, AV_LOG_DEBUG, " NULL\n");
return;
case AMF_DATA_TYPE_ARRAY:
parse_key = 0;
case AMF_DATA_TYPE_MIXEDARRAY:
nb = bytestream_get_be32(&data);
case AMF_DATA_TYPE_OBJECT:
av_log(ctx, AV_LOG_DEBUG, " {\n");
while (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY) {
int t;
if (parse_key) {
size = bytestream_get_be16(&data);
size = FFMIN(size, sizeof(buf) - 1);
if (!size) {
av_log(ctx, AV_LOG_DEBUG, " }\n");
data++;
break;
}
memcpy(buf, data, size);
buf[size] = 0;
if (size >= data_end - data)
return;
data += size;
av_log(ctx, AV_LOG_DEBUG, " %s: ", buf);
}
amf_tag_contents(ctx, data, data_end);
t = ff_amf_tag_size(data, data_end);
if (t < 0 || t >= data_end - data)
return;
data += t;
}
return;
case AMF_DATA_TYPE_OBJECT_END:
av_log(ctx, AV_LOG_DEBUG, " }\n");
return;
default:
return;
}
}
/**
* Parse the presentation segment packet.
*
* The presentation segment contains details on the video
* width, video height, x & y subtitle position.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Implement cropping
* @todo TODO: Implement forcing of subtitles
*/
static int parse_presentation_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size,
int64_t pts)
{
PGSSubContext *ctx = avctx->priv_data;
int x, y, ret;
int w = bytestream_get_be16(&buf);
int h = bytestream_get_be16(&buf);
ctx->presentation.pts = pts;
av_dlog(avctx, "Video Dimensions %dx%d\n",
w, h);
ret = ff_set_dimensions(avctx, w, h);
if (ret < 0)
return ret;
/* Skip 1 bytes of unknown, frame rate? */
buf++;
ctx->presentation.id_number = bytestream_get_be16(&buf);
/*
* Skip 3 bytes of unknown:
* state
* palette_update_flag (0x80),
* palette_id_to_use,
*/
buf += 3;
ctx->presentation.object_number = bytestream_get_byte(&buf);
ctx->presentation.composition_flag = 0;
if (!ctx->presentation.object_number)
return 0;
/*
* Skip 3 bytes of unknown:
* object_id_ref (2 bytes),
* window_id_ref,
*/
buf += 3;
ctx->presentation.composition_flag = bytestream_get_byte(&buf);
x = bytestream_get_be16(&buf);
y = bytestream_get_be16(&buf);
/* TODO If cropping, cropping_x, cropping_y, cropping_width, cropping_height (all 2 bytes).*/
av_dlog(avctx, "Subtitle Placement x=%d, y=%d\n", x, y);
if (x > avctx->width || y > avctx->height) {
av_log(avctx, AV_LOG_ERROR, "Subtitle out of video bounds. x = %d, y = %d, video width = %d, video height = %d.\n",
x, y, avctx->width, avctx->height);
x = 0; y = 0;
}
/* Fill in dimensions */
ctx->presentation.x = x;
ctx->presentation.y = y;
return 0;
}
static int decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
const uint8_t *in_buf, int buf_size)
{
SgiState *s = avctx->priv_data;
AVFrame *picture = data;
AVFrame *p = &s->picture;
const uint8_t *in_end = in_buf + buf_size;
unsigned int dimension, bytes_per_channel, rle;
int ret = 0;
uint8_t *out_buf, *out_end;
if (buf_size < SGI_HEADER_SIZE){
av_log(avctx, AV_LOG_ERROR, "buf_size too small (%d)\n", buf_size);
return -1;
}
/* Test for SGI magic. */
if (bytestream_get_be16(&in_buf) != SGI_MAGIC) {
av_log(avctx, AV_LOG_ERROR, "bad magic number\n");
return -1;
}
rle = bytestream_get_byte(&in_buf);
bytes_per_channel = bytestream_get_byte(&in_buf);
dimension = bytestream_get_be16(&in_buf);
s->width = bytestream_get_be16(&in_buf);
s->height = bytestream_get_be16(&in_buf);
s->depth = bytestream_get_be16(&in_buf);
if (bytes_per_channel != 1) {
av_log(avctx, AV_LOG_ERROR, "wrong channel number\n");
return -1;
}
/* Check for supported image dimensions. */
if (dimension != 2 && dimension != 3) {
av_log(avctx, AV_LOG_ERROR, "wrong dimension number\n");
return -1;
}
if (s->depth == SGI_GRAYSCALE) {
avctx->pix_fmt = PIX_FMT_GRAY8;
} else if (s->depth == SGI_RGB) {
avctx->pix_fmt = PIX_FMT_RGB24;
} else if (s->depth == SGI_RGBA) {
avctx->pix_fmt = PIX_FMT_RGBA;
} else {
av_log(avctx, AV_LOG_ERROR, "wrong picture format\n");
return -1;
}
if (avcodec_check_dimensions(avctx, s->width, s->height))
return -1;
avcodec_set_dimensions(avctx, s->width, s->height);
if (p->data[0])
avctx->release_buffer(avctx, p);
p->reference = 0;
if (avctx->get_buffer(avctx, p) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed.\n");
return -1;
}
p->pict_type = FF_I_TYPE;
p->key_frame = 1;
out_buf = p->data[0];
out_end = out_buf + p->linesize[0] * s->height;
s->linesize = p->linesize[0];
/* Skip header. */
in_buf += SGI_HEADER_SIZE - 12;
if (rle) {
ret = read_rle_sgi(out_end, in_buf, in_end, s);
} else {
ret = read_uncompressed_sgi(out_buf, out_end, in_buf, in_end, s);
}
if (ret == 0) {
*picture = s->picture;
*data_size = sizeof(AVPicture);
return buf_size;
} else {
return -1;
}
}
/**
* Parse the picture segment packet.
*
* The picture segment contains details on the sequence id,
* width, height and Run Length Encoded (RLE) bitmap data.
*
* @param avctx contains the current codec context
* @param buf pointer to the packet to process
* @param buf_size size of packet to process
* @todo TODO: Enable support for RLE data over multiple packets
*/
static int parse_picture_segment(AVCodecContext *avctx,
const uint8_t *buf, int buf_size)
{
PGSSubContext *ctx = avctx->priv_data;
uint8_t sequence_desc;
unsigned int rle_bitmap_len, width, height;
if (buf_size <= 4)
return -1;
buf_size -= 4;
/* skip 3 unknown bytes: Object ID (2 bytes), Version Number */
buf += 3;
/* Read the Sequence Description to determine if start of RLE data or appended to previous RLE */
sequence_desc = bytestream_get_byte(&buf);
if (!(sequence_desc & 0x80)) {
/* Additional RLE data */
if (buf_size > ctx->picture.rle_remaining_len)
return -1;
memcpy(ctx->picture.rle + ctx->picture.rle_data_len, buf, buf_size);
ctx->picture.rle_data_len += buf_size;
ctx->picture.rle_remaining_len -= buf_size;
return 0;
}
if (buf_size <= 7)
return -1;
buf_size -= 7;
/* Decode rle bitmap length, stored size includes width/height data */
rle_bitmap_len = bytestream_get_be24(&buf) - 2*2;
/* Get bitmap dimensions from data */
width = bytestream_get_be16(&buf);
height = bytestream_get_be16(&buf);
/* Make sure the bitmap is not too large */
if (avctx->width < width || avctx->height < height) {
av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger then video.\n");
return -1;
}
ctx->picture.w = width;
ctx->picture.h = height;
av_fast_malloc(&ctx->picture.rle, &ctx->picture.rle_buffer_size, rle_bitmap_len);
if (!ctx->picture.rle)
return -1;
memcpy(ctx->picture.rle, buf, buf_size);
ctx->picture.rle_data_len = buf_size;
ctx->picture.rle_remaining_len = rle_bitmap_len - buf_size;
return 0;
}
static int pcm_bluray_decode_frame(AVCodecContext *avctx,
void *data,
int *data_size,
AVPacket *avpkt)
{
const uint8_t *src = avpkt->data;
int buf_size = avpkt->size;
int num_source_channels, channel, retval;
int sample_size, samples, output_size;
int16_t *dst16 = data;
int32_t *dst32 = data;
if (buf_size < 4) {
av_log(avctx, AV_LOG_ERROR, "PCM packet too small\n");
return -1;
}
if (pcm_bluray_parse_header(avctx, src))
return -1;
src += 4;
buf_size -= 4;
/* There's always an even number of channels in the source */
num_source_channels = FFALIGN(avctx->channels, 2);
sample_size = (num_source_channels * avctx->bits_per_coded_sample) >> 3;
samples = buf_size / sample_size;
output_size = samples * avctx->channels *
(avctx->sample_fmt == SAMPLE_FMT_S32 ? 4 : 2);
if (output_size > *data_size) {
av_log(avctx, AV_LOG_ERROR,
"Insufficient output buffer space (%d bytes, needed %d bytes)\n",
*data_size, output_size);
return -1;
}
*data_size = output_size;
if (samples) {
switch (avctx->channel_layout) {
/* cases with same number of source and coded channels */
case CH_LAYOUT_STEREO:
case CH_LAYOUT_4POINT0:
case CH_LAYOUT_2_2:
samples *= num_source_channels;
if (SAMPLE_FMT_S16 == avctx->sample_fmt) {
#if HAVE_BIGENDIAN
memcpy(dst16, src, output_size);
#else
do {
*dst16++ = bytestream_get_be16(&src);
} while (--samples);
#endif
} else {
do {
*dst32++ = bytestream_get_be24(&src) << 8;
} while (--samples);
}
break;
/* cases where number of source channels = coded channels + 1 */
case CH_LAYOUT_MONO:
case CH_LAYOUT_SURROUND:
case CH_LAYOUT_2_1:
case CH_LAYOUT_5POINT0:
if (SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
#if HAVE_BIGENDIAN
memcpy(dst16, src, avctx->channels * 2);
dst16 += avctx->channels;
src += sample_size;
#else
channel = avctx->channels;
do {
*dst16++ = bytestream_get_be16(&src);
} while (--channel);
src += 2;
#endif
} while (--samples);
} else {
do {
channel = avctx->channels;
do {
*dst32++ = bytestream_get_be24(&src) << 8;
} while (--channel);
src += 3;
} while (--samples);
}
break;
/* remapping: L, R, C, LBack, RBack, LF */
case CH_LAYOUT_5POINT1:
if (SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16 += 6;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32 += 6;
} while (--samples);
}
break;
/* remapping: L, R, C, LSide, LBack, RBack, RSide, <unused> */
case CH_LAYOUT_7POINT0:
if (SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[6] = bytestream_get_be16(&src);
dst16 += 7;
src += 2;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[6] = bytestream_get_be24(&src) << 8;
dst32 += 7;
src += 3;
} while (--samples);
}
break;
/* remapping: L, R, C, LSide, LBack, RBack, RSide, LF */
case CH_LAYOUT_7POINT1:
if (SAMPLE_FMT_S16 == avctx->sample_fmt) {
do {
dst16[0] = bytestream_get_be16(&src);
dst16[1] = bytestream_get_be16(&src);
dst16[2] = bytestream_get_be16(&src);
dst16[6] = bytestream_get_be16(&src);
dst16[4] = bytestream_get_be16(&src);
dst16[5] = bytestream_get_be16(&src);
dst16[7] = bytestream_get_be16(&src);
dst16[3] = bytestream_get_be16(&src);
dst16 += 8;
} while (--samples);
} else {
do {
dst32[0] = bytestream_get_be24(&src) << 8;
dst32[1] = bytestream_get_be24(&src) << 8;
dst32[2] = bytestream_get_be24(&src) << 8;
dst32[6] = bytestream_get_be24(&src) << 8;
dst32[4] = bytestream_get_be24(&src) << 8;
dst32[5] = bytestream_get_be24(&src) << 8;
dst32[7] = bytestream_get_be24(&src) << 8;
dst32[3] = bytestream_get_be24(&src) << 8;
dst32 += 8;
} while (--samples);
}
break;
}
}
retval = src - avpkt->data;
if (avctx->debug & FF_DEBUG_BITSTREAM)
dprintf(avctx, "pcm_bluray_decode_frame: decoded %d -> %d bytes\n",
retval, *data_size);
return retval;
}
/**
* Cook initialization
*
* @param avctx pointer to the AVCodecContext
*/
static av_cold int cook_decode_init(AVCodecContext *avctx)
{
COOKContext *q = avctx->priv_data;
const uint8_t *edata_ptr = avctx->extradata;
const uint8_t *edata_ptr_end = edata_ptr + avctx->extradata_size;
int extradata_size = avctx->extradata_size;
int s = 0;
unsigned int channel_mask = 0;
int samples_per_frame = 0;
int ret;
q->avctx = avctx;
/* Take care of the codec specific extradata. */
if (extradata_size <= 0) {
av_log(avctx, AV_LOG_ERROR, "Necessary extradata missing!\n");
return AVERROR_INVALIDDATA;
}
av_log(avctx, AV_LOG_DEBUG, "codecdata_length=%d\n", avctx->extradata_size);
/* Take data from the AVCodecContext (RM container). */
if (!avctx->channels) {
av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
return AVERROR_INVALIDDATA;
}
/* Initialize RNG. */
av_lfg_init(&q->random_state, 0);
ff_dsputil_init(&q->dsp, avctx);
while (edata_ptr < edata_ptr_end) {
/* 8 for mono, 16 for stereo, ? for multichannel
Swap to right endianness so we don't need to care later on. */
if (extradata_size >= 8) {
q->subpacket[s].cookversion = bytestream_get_be32(&edata_ptr);
samples_per_frame = bytestream_get_be16(&edata_ptr);
q->subpacket[s].subbands = bytestream_get_be16(&edata_ptr);
extradata_size -= 8;
}
if (extradata_size >= 8) {
bytestream_get_be32(&edata_ptr); // Unknown unused
q->subpacket[s].js_subband_start = bytestream_get_be16(&edata_ptr);
q->subpacket[s].js_vlc_bits = bytestream_get_be16(&edata_ptr);
extradata_size -= 8;
}
/* Initialize extradata related variables. */
q->subpacket[s].samples_per_channel = samples_per_frame / avctx->channels;
q->subpacket[s].bits_per_subpacket = avctx->block_align * 8;
/* Initialize default data states. */
q->subpacket[s].log2_numvector_size = 5;
q->subpacket[s].total_subbands = q->subpacket[s].subbands;
q->subpacket[s].num_channels = 1;
/* Initialize version-dependent variables */
av_log(avctx, AV_LOG_DEBUG, "subpacket[%i].cookversion=%x\n", s,
q->subpacket[s].cookversion);
q->subpacket[s].joint_stereo = 0;
switch (q->subpacket[s].cookversion) {
case MONO:
if (avctx->channels != 1) {
av_log_ask_for_sample(avctx, "Container channels != 1.\n");
return AVERROR_PATCHWELCOME;
}
av_log(avctx, AV_LOG_DEBUG, "MONO\n");
break;
case STEREO:
if (avctx->channels != 1) {
q->subpacket[s].bits_per_subpdiv = 1;
q->subpacket[s].num_channels = 2;
}
av_log(avctx, AV_LOG_DEBUG, "STEREO\n");
break;
case JOINT_STEREO:
if (avctx->channels != 2) {
av_log_ask_for_sample(avctx, "Container channels != 2.\n");
return AVERROR_PATCHWELCOME;
}
av_log(avctx, AV_LOG_DEBUG, "JOINT_STEREO\n");
if (avctx->extradata_size >= 16) {
q->subpacket[s].total_subbands = q->subpacket[s].subbands +
q->subpacket[s].js_subband_start;
q->subpacket[s].joint_stereo = 1;
q->subpacket[s].num_channels = 2;
}
if (q->subpacket[s].samples_per_channel > 256) {
q->subpacket[s].log2_numvector_size = 6;
}
if (q->subpacket[s].samples_per_channel > 512) {
q->subpacket[s].log2_numvector_size = 7;
}
break;
case MC_COOK:
av_log(avctx, AV_LOG_DEBUG, "MULTI_CHANNEL\n");
if (extradata_size >= 4)
channel_mask |= q->subpacket[s].channel_mask = bytestream_get_be32(&edata_ptr);
if (av_get_channel_layout_nb_channels(q->subpacket[s].channel_mask) > 1) {
q->subpacket[s].total_subbands = q->subpacket[s].subbands +
q->subpacket[s].js_subband_start;
q->subpacket[s].joint_stereo = 1;
q->subpacket[s].num_channels = 2;
q->subpacket[s].samples_per_channel = samples_per_frame >> 1;
if (q->subpacket[s].samples_per_channel > 256) {
q->subpacket[s].log2_numvector_size = 6;
}
if (q->subpacket[s].samples_per_channel > 512) {
q->subpacket[s].log2_numvector_size = 7;
}
} else
q->subpacket[s].samples_per_channel = samples_per_frame;
break;
default:
av_log_ask_for_sample(avctx, "Unknown Cook version.\n");
return AVERROR_PATCHWELCOME;
}
static int pcm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
PCMDecode *s = avctx->priv_data;
int sample_size, c, n;
short *samples;
const uint8_t *src, *src8, *src2[MAX_CHANNELS];
uint8_t *dstu8;
int16_t *dst_int16_t;
int32_t *dst_int32_t;
int64_t *dst_int64_t;
uint16_t *dst_uint16_t;
uint32_t *dst_uint32_t;
samples = data;
src = buf;
if (avctx->sample_fmt!=avctx->codec->sample_fmts[0]) {
av_log(avctx, AV_LOG_ERROR, "invalid sample_fmt\n");
return -1;
}
if(avctx->channels <= 0 || avctx->channels > MAX_CHANNELS){
av_log(avctx, AV_LOG_ERROR, "PCM channels out of bounds\n");
return -1;
}
sample_size = av_get_bits_per_sample(avctx->codec_id)/8;
/* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */
if (CODEC_ID_PCM_DVD == avctx->codec_id)
/* 2 samples are interleaved per block in PCM_DVD */
sample_size = avctx->bits_per_coded_sample * 2 / 8;
n = avctx->channels * sample_size;
if(n && buf_size % n){
if (buf_size < n) {
av_log(avctx, AV_LOG_ERROR, "invalid PCM packet\n");
return -1;
}else
buf_size -= buf_size % n;
}
buf_size= FFMIN(buf_size, *data_size/2);
*data_size=0;
n = buf_size/sample_size;
switch(avctx->codec->id) {
case CODEC_ID_PCM_U32LE:
DECODE(uint32_t, le32, src, samples, n, 0, 0x80000000)
break;
case CODEC_ID_PCM_U32BE:
DECODE(uint32_t, be32, src, samples, n, 0, 0x80000000)
break;
case CODEC_ID_PCM_S24LE:
DECODE(int32_t, le24, src, samples, n, 8, 0)
break;
case CODEC_ID_PCM_S24BE:
DECODE(int32_t, be24, src, samples, n, 8, 0)
break;
case CODEC_ID_PCM_U24LE:
DECODE(uint32_t, le24, src, samples, n, 8, 0x800000)
break;
case CODEC_ID_PCM_U24BE:
DECODE(uint32_t, be24, src, samples, n, 8, 0x800000)
break;
case CODEC_ID_PCM_S24DAUD:
for(;n>0;n--) {
uint32_t v = bytestream_get_be24(&src);
v >>= 4; // sync flags are here
*samples++ = av_reverse[(v >> 8) & 0xff] +
(av_reverse[v & 0xff] << 8);
}
break;
case CODEC_ID_PCM_S16LE_PLANAR:
n /= avctx->channels;
for(c=0;c<avctx->channels;c++)
src2[c] = &src[c*n*2];
for(;n>0;n--)
for(c=0;c<avctx->channels;c++)
*samples++ = bytestream_get_le16(&src2[c]);
src = src2[avctx->channels-1];
break;
case CODEC_ID_PCM_U16LE:
DECODE(uint16_t, le16, src, samples, n, 0, 0x8000)
break;
case CODEC_ID_PCM_U16BE:
DECODE(uint16_t, be16, src, samples, n, 0, 0x8000)
break;
case CODEC_ID_PCM_S8:
dstu8= (uint8_t*)samples;
for(;n>0;n--) {
*dstu8++ = *src++ + 128;
}
samples= (short*)dstu8;
break;
#if HAVE_BIGENDIAN
case CODEC_ID_PCM_F64LE:
DECODE(int64_t, le64, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_F32LE:
DECODE(int32_t, le32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16LE:
DECODE(int16_t, le16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F64BE:
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
case CODEC_ID_PCM_S16BE:
#else
case CODEC_ID_PCM_F64BE:
DECODE(int64_t, be64, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F32BE:
case CODEC_ID_PCM_S32BE:
DECODE(int32_t, be32, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_S16BE:
DECODE(int16_t, be16, src, samples, n, 0, 0)
break;
case CODEC_ID_PCM_F64LE:
case CODEC_ID_PCM_F32LE:
case CODEC_ID_PCM_S32LE:
case CODEC_ID_PCM_S16LE:
#endif /* HAVE_BIGENDIAN */
case CODEC_ID_PCM_U8:
memcpy(samples, src, n*sample_size);
src += n*sample_size;
samples = (short*)((uint8_t*)data + n*sample_size);
break;
case CODEC_ID_PCM_ZORK:
for(;n>0;n--) {
int x= *src++;
if(x&128) x-= 128;
else x = -x;
*samples++ = x << 8;
}
break;
case CODEC_ID_PCM_ALAW:
case CODEC_ID_PCM_MULAW:
for(;n>0;n--) {
*samples++ = s->table[*src++];
}
break;
case CODEC_ID_PCM_DVD:
dst_int32_t = data;
n /= avctx->channels;
switch (avctx->bits_per_coded_sample) {
case 16:
while (n--) {
c = avctx->channels;
while (c--)
*dst_int32_t++ = bytestream_get_be16(&src) << 16;
}
break;
case 20:
while (n--) {
c = avctx->channels;
src8 = src + 4*c;
while (c--) {
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8 &0xf0) << 8);
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++ &0x0f) << 12);
}
src = src8;
}
break;
case 24:
while (n--) {
c = avctx->channels;
src8 = src + 4*c;
while (c--) {
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
*dst_int32_t++ = (bytestream_get_be16(&src) << 16) + ((*src8++) << 8);
}
src = src8;
}
break;
default:
av_log(avctx, AV_LOG_ERROR,
"PCM DVD unsupported sample depth %i\n",
avctx->bits_per_coded_sample);
return -1;
break;
}
samples = (short *) dst_int32_t;
break;
default:
return -1;
}
*data_size = (uint8_t *)samples - (uint8_t *)data;
return src - buf;
}
