static void encoder_state_write_bitstream_aud(encoder_state * const encoder_state)
{
bitstream * const stream = &encoder_state->stream;
encoder_state_write_bitstream_access_unit_delimiter(encoder_state);
nal_write(stream, AUD_NUT, 0, 1);
bitstream_align(stream);
}
int ff_ccitt_unpack(AVCodecContext *avctx, const uint8_t *src, int srcsize,
uint8_t *dst, int height, int stride,
enum TiffCompr compr, int opts)
{
int j;
BitstreamContext bc;
int *runs, *ref = NULL, *runend;
int ret;
int runsize = avctx->width + 2;
runs = av_malloc(runsize * sizeof(runs[0]));
ref = av_malloc(runsize * sizeof(ref[0]));
if (!runs || !ref) {
ret = AVERROR(ENOMEM);
goto fail;
}
ref[0] = avctx->width;
ref[1] = 0;
ref[2] = 0;
bitstream_init(&bc, src, srcsize * 8);
for (j = 0; j < height; j++) {
runend = runs + runsize;
if (compr == TIFF_G4) {
ret = decode_group3_2d_line(avctx, &bc, avctx->width, runs, runend,
ref);
if (ret < 0)
goto fail;
} else {
int g3d1 = (compr == TIFF_G3) && !(opts & 1);
if (compr != TIFF_CCITT_RLE &&
find_group3_syncmarker(&bc, srcsize * 8) < 0)
break;
if (compr == TIFF_CCITT_RLE || g3d1 || bitstream_read_bit(&bc))
ret = decode_group3_1d_line(avctx, &bc, avctx->width, runs,
runend);
else
ret = decode_group3_2d_line(avctx, &bc, avctx->width, runs,
runend, ref);
if (compr == TIFF_CCITT_RLE)
bitstream_align(&bc);
}
if (avctx->err_recognition & AV_EF_EXPLODE && ret < 0)
goto fail;
if (ret < 0) {
put_line(dst, stride, avctx->width, ref);
} else {
put_line(dst, stride, avctx->width, runs);
FFSWAP(int *, runs, ref);
}
dst += stride;
}
ret = 0;
fail:
av_free(runs);
av_free(ref);
return ret;
}
int
swf_action_build(bitstream_t *bs, swf_action_t *act) {
bitstream_align(bs);
bitstream_putbyte(bs, act->action_id);
if (act->action_id & 0x80) {
if (act->action_data == NULL) {
return 1; // error
}
bitstream_putbytesLE(bs, act->action_length, 2);
bitstream_putstring(bs, act->action_data, act->action_length);
}
return 0;
}
int
swf_action_parse(bitstream_t *bs, swf_action_t *act) {
unsigned long offset;
bitstream_align(bs);
act->action_id = bitstream_getbyte(bs);
if (act->action_id & 0x80) {
act->action_length = bitstream_getbytesLE(bs, 2);
offset = bitstream_getbytepos(bs);
act->action_data = malloc(act->action_length);
if (act->action_data == NULL) {
fprintf(stderr, "Can't alloc memory for act->action_data\n");
return 1;
}
bitstream_getstring(bs, act->action_data, act->action_length);
}
return 0;
}
int
swf_tag_shape_input_detail(swf_tag_t *tag, struct swf_object_ *swf) {
swf_tag_shape_detail_t *swf_tag_shape = tag->detail;
unsigned char *data = tag->data;
unsigned long length = tag->length;
bitstream_t *bs;
int ret;
(void) swf;
if (swf_tag_shape == NULL) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape == NULL\n");
return 1;
}
// parse context
swf_tag_shape->_current_x = 0;
swf_tag_shape->_current_y = 0;
swf_tag_shape->_parse_condition = 0;
bs = bitstream_open();
bitstream_input(bs, data, length);
swf_tag_shape->shape_id = bitstream_getbytesLE(bs, 2);
ret = swf_rect_parse(bs, &(swf_tag_shape->rect));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->rect parse failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
// DefineMorphShape, DefineMorphShape2
swf_tag_shape->is_morph = (tag->code == 46) || (tag->code == 84);
// DefineShape4, DefineMorphShape2
swf_tag_shape->has_strokes = (tag->code == 83) || (tag->code == 84);
if (swf_tag_shape->is_morph) {
ret = swf_rect_parse(bs, &(swf_tag_shape->rect_morph));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->rect_morph parse failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
}
if (swf_tag_shape->has_strokes) {
ret = swf_rect_parse(bs, &(swf_tag_shape->stroke_rect));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->stroke_rect parse failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
if (swf_tag_shape->is_morph) {
ret = swf_rect_parse(bs, &(swf_tag_shape->stroke_rect_morph));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->stroke_rect_morph parse failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
}
swf_tag_shape->define_shape_reserved = bitstream_getbits(bs, 6);
swf_tag_shape->define_shape_non_scaling_strokes = bitstream_getbits(bs, 1);
swf_tag_shape->define_shape_scaling_strokes = bitstream_getbits(bs, 1);
}
if (swf_tag_shape->is_morph) {
bitstream_align(bs);
swf_tag_shape->offset_morph = bitstream_getbytesLE(bs, 4);
ret = swf_morph_shape_with_style_parse(bs, &swf_tag_shape->morph_shape_with_style, tag);
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_shape_with_style_parse swf_tag_shape->morph_shape_with_style failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
} else {
ret = swf_shape_with_style_parse(bs, &swf_tag_shape->shape_with_style, tag);
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_shape_with_style_parse swf_tag_shape->shape_with_style failed. shape_id=%d\n", swf_tag_shape->shape_id);
bitstream_close(bs);
return ret;
}
}
bitstream_close(bs);
return 0;
}
unsigned char *
swf_tag_shape_output_detail(swf_tag_t *tag, unsigned long *length,
struct swf_object_ *swf) {
swf_tag_shape_detail_t *swf_tag_shape = (swf_tag_shape_detail_t *) tag->detail;
bitstream_t *bs;
unsigned char *data;
int ret;
long offset_of_offset_morph = 0;
long tmp_offset_byte = 0;
long tmp_offset_bit = 0;
(void) swf;
*length = 0;
// build context
swf_tag_shape->_current_fill_style_num = 0;
swf_tag_shape->_current_line_style_num = 0;
swf_tag_shape->_current_x = 0;
swf_tag_shape->_current_y = 0;
//
bs = bitstream_open();
bitstream_putbytesLE(bs, swf_tag_shape->shape_id, 2);
swf_rect_build(bs, &(swf_tag_shape->rect));
// DefineMorphShape, DefineMorphShape2
swf_tag_shape->is_morph = (tag->code == 46) || (tag->code == 84);
// DefineShape4, DefineMorphShape2
swf_tag_shape->has_strokes = (tag->code == 83) || (tag->code == 84);
if (swf_tag_shape->is_morph) {
ret = swf_rect_build(bs, &(swf_tag_shape->rect_morph));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_output_detail: swf_tag_shape->rect_morph build failed\n");
bitstream_close(bs);
return NULL;
}
}
if (swf_tag_shape->has_strokes) {
ret = swf_rect_build(bs, &(swf_tag_shape->stroke_rect));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->stroke_rect build failed\n");
bitstream_close(bs);
return NULL;
}
if (swf_tag_shape->is_morph) {
ret = swf_rect_build(bs, &(swf_tag_shape->stroke_rect_morph));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_shape_input_detail: swf_tag_shape->stroke_rect_morph build failed\n");
bitstream_close(bs);
return NULL;
}
}
bitstream_putbits(bs, 6, swf_tag_shape->define_shape_reserved );
bitstream_putbits(bs, 1, swf_tag_shape->define_shape_non_scaling_strokes );
bitstream_putbits(bs, 1, swf_tag_shape->define_shape_scaling_strokes);
}
if (swf_tag_shape->is_morph) {
bitstream_align(bs);
// memory offset for overwrite this value after.
offset_of_offset_morph = bitstream_getbytepos(bs);
bitstream_putbytesLE(bs, swf_tag_shape->offset_morph, 4);
swf_morph_shape_with_style_build(bs, &swf_tag_shape->morph_shape_with_style, tag);
// rewind to overwrite offset_morph field and overwrite it.
// offset distance from offset_morph so -4 operation
swf_tag_shape->offset_morph = swf_tag_shape->morph_shape_with_style.offset_of_end_edges - offset_of_offset_morph - 4;
tmp_offset_byte = bitstream_getbytepos(bs); // save offset
tmp_offset_bit = bitstream_getbitpos(bs);
bitstream_setpos(bs, offset_of_offset_morph, 0);
bitstream_putbytesLE(bs, swf_tag_shape->offset_morph , 4);
bitstream_setpos(bs, tmp_offset_byte, tmp_offset_bit); // restore offset
} else {
ret = swf_shape_with_style_build(bs, &swf_tag_shape->shape_with_style, tag);
if (ret) {
fprintf(stderr, "swf_tag_shape_output_detail: swf_shape_with_style_build failed\n");
bitstream_close(bs);
return NULL;
}
}
data = bitstream_steal(bs, length);
bitstream_close(bs);
return data;
}
int
swf_tag_place_input_detail(swf_tag_t *tag, struct swf_object_ *swf) {
swf_tag_place_detail_t *swf_tag_place = tag->detail;
unsigned char *data = tag->data;
unsigned long length = tag->length;
bitstream_t *bs;
int ret;
(void) swf;
if (swf_tag_place == NULL) {
fprintf(stderr, "ERROR: swf_tag_place_input_detail: swf_tag_place == NULL\n");
return 1;
}
swf_tag_place->character_id = 0; // undefined
bs = bitstream_open();
bitstream_input(bs, data, length);
if (tag->code == 4) { // PlaceObject
swf_tag_place->character_id = bitstream_getbytesLE(bs, 2);
swf_tag_place->depth = bitstream_getbytesLE(bs, 2);
ret = swf_matrix_parse(bs, &(swf_tag_place->matrix));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_place_input_detail: swf_tag_place->matrix parse failed. character_id=%d\n", swf_tag_place->character_id);
bitstream_close(bs);
return ret;
}
bitstream_align(bs);
if (bitstream_getbytepos(bs) < length) { // optional
ret = swf_cxform_parse(bs, &(swf_tag_place->color_transform));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_place_input_detail: swf_tag_place->color_transform parse failed. character_id=%d\n", swf_tag_place->character_id);
bitstream_close(bs);
return ret;
}
} else {
swf_tag_place->color_transform.has_add_terms = 0;
swf_tag_place->color_transform.has_mult_terms = 0;
swf_tag_place->color_transform.nbits = 0;
}
} else if (tag->code == 26) { // PlaceObject2
swf_tag_place->flag_has_clip_action = bitstream_getbit(bs);
swf_tag_place->flag_has_clip_depth = bitstream_getbit(bs);
swf_tag_place->flag_has_name = bitstream_getbit(bs);
swf_tag_place->flag_has_ratio = bitstream_getbit(bs);
swf_tag_place->flag_has_color_transform = bitstream_getbit(bs);
swf_tag_place->flag_has_matrix = bitstream_getbit(bs);
swf_tag_place->flag_has_character = bitstream_getbit(bs);
swf_tag_place->flag_has_move = bitstream_getbit(bs);
swf_tag_place->depth = bitstream_getbytesLE(bs, 2);
if (swf_tag_place->flag_has_character) {
swf_tag_place->character_id = bitstream_getbytesLE(bs, 2);
} else {
swf_tag_place->character_id = 0;
}
if (swf_tag_place->flag_has_matrix) {
ret = swf_matrix_parse(bs, &(swf_tag_place->matrix));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_place_input_detail: swf_tag_place->matrix parse failed. character_id=%d\n", swf_tag_place->character_id);
bitstream_close(bs);
return ret;
}
}
if (swf_tag_place->flag_has_color_transform) {
ret = swf_cxformwithalpha_parse(bs, &(swf_tag_place->color_transform_with_alpha));
if (ret) {
fprintf(stderr, "ERROR: swf_tag_place_input_detail: swf_tag_place->color_transform parse failed. character_id=%d\n", swf_tag_place->character_id);
bitstream_close(bs);
return ret;
}
}
if (swf_tag_place->flag_has_ratio) {
swf_tag_place->ratio = bitstream_getbytesLE(bs, 2);
}
if (swf_tag_place->flag_has_name) {
swf_tag_place->name = (char *) bitstream_outputstring(bs);
}
if (swf_tag_place->flag_has_clip_depth) {
swf_tag_place->clip_depth = bitstream_getbytesLE(bs, 2);
}
// TODO: clip action data for SWF 5
} else {
bitstream_close(bs);
return 1; // unknown tag;
}
bitstream_close(bs);
return 0;
}