static int filter_units_filter(AVBSFContext *bsf, AVPacket *out)
{
FilterUnitsContext *ctx = bsf->priv_data;
CodedBitstreamFragment *frag = &ctx->fragment;
AVPacket *in = NULL;
int err, i, j;
while (1) {
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
return err;
if (ctx->mode == NOOP) {
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}
err = ff_cbs_read_packet(ctx->cbc, frag, in);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
goto fail;
}
for (i = 0; i < frag->nb_units; i++) {
for (j = 0; j < ctx->nb_types; j++) {
if (frag->units[i].type == ctx->type_list[j])
break;
}
if (ctx->mode == REMOVE ? j < ctx->nb_types
: j >= ctx->nb_types) {
ff_cbs_delete_unit(ctx->cbc, frag, i);
--i;
}
}
if (frag->nb_units > 0)
break;
// Don't return packets with nothing in them.
av_packet_free(&in);
ff_cbs_fragment_uninit(ctx->cbc, frag);
}
err = ff_cbs_write_packet(ctx->cbc, out, frag);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
goto fail;
}
err = av_packet_copy_props(out, in);
if (err < 0)
goto fail;
fail:
ff_cbs_fragment_uninit(ctx->cbc, frag);
av_packet_free(&in);
return err;
}
static int h264_redundant_pps_filter(AVBSFContext *bsf, AVPacket *out)
{
H264RedundantPPSContext *ctx = bsf->priv_data;
AVPacket *in;
CodedBitstreamFragment *au = &ctx->access_unit;
int au_has_sps;
int err, i;
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
return err;
err = ff_cbs_read_packet(ctx->input, au, in);
if (err < 0)
goto fail;
au_has_sps = 0;
for (i = 0; i < au->nb_units; i++) {
CodedBitstreamUnit *nal = &au->units[i];
if (nal->type == H264_NAL_SPS)
au_has_sps = 1;
if (nal->type == H264_NAL_PPS) {
err = h264_redundant_pps_fixup_pps(ctx, nal->content);
if (err < 0)
goto fail;
if (!au_has_sps) {
av_log(bsf, AV_LOG_VERBOSE, "Deleting redundant PPS "
"at %"PRId64".\n", in->pts);
err = ff_cbs_delete_unit(ctx->input, au, i);
if (err < 0)
goto fail;
}
}
if (nal->type == H264_NAL_SLICE ||
nal->type == H264_NAL_IDR_SLICE) {
H264RawSlice *slice = nal->content;
h264_redundant_pps_fixup_slice(ctx, &slice->header);
}
}
err = ff_cbs_write_packet(ctx->output, out, au);
if (err < 0)
goto fail;
err = av_packet_copy_props(out, in);
if (err < 0)
goto fail;
err = 0;
fail:
ff_cbs_fragment_uninit(ctx->output, au);
av_packet_free(&in);
if (err < 0)
av_packet_unref(out);
return err;
}
static int trace_headers(AVBSFContext *bsf, AVPacket *out)
{
TraceHeadersContext *ctx = bsf->priv_data;
CodedBitstreamFragment au;
AVPacket *in;
char tmp[256] = { 0 };
int err;
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
return err;
if (in->flags & AV_PKT_FLAG_KEY)
av_strlcat(tmp, ", key frame", sizeof(tmp));
if (in->flags & AV_PKT_FLAG_CORRUPT)
av_strlcat(tmp, ", corrupt", sizeof(tmp));
if (in->pts != AV_NOPTS_VALUE)
av_strlcatf(tmp, sizeof(tmp), ", pts %"PRId64, in->pts);
else
av_strlcat(tmp, ", no pts", sizeof(tmp));
if (in->dts != AV_NOPTS_VALUE)
av_strlcatf(tmp, sizeof(tmp), ", dts %"PRId64, in->dts);
else
av_strlcat(tmp, ", no dts", sizeof(tmp));
if (in->duration > 0)
av_strlcatf(tmp, sizeof(tmp), ", duration %"PRId64, in->duration);
av_log(bsf, AV_LOG_INFO, "Packet: %d bytes%s.\n", in->size, tmp);
err = ff_cbs_read_packet(&ctx->cbc, &au, in);
if (err < 0)
return err;
ff_cbs_fragment_uninit(&ctx->cbc, &au);
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}
static int h265_metadata_filter(AVBSFContext *bsf, AVPacket *out)
{
H265MetadataContext *ctx = bsf->priv_data;
AVPacket *in = NULL;
CodedBitstreamFragment *au = &ctx->access_unit;
int err, i;
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
goto fail;
err = ff_cbs_read_packet(ctx->cbc, au, in);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
goto fail;
}
if (au->nb_units == 0) {
av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
err = AVERROR_INVALIDDATA;
goto fail;
}
// If an AUD is present, it must be the first NAL unit.
if (au->units[0].type == HEVC_NAL_AUD) {
if (ctx->aud == REMOVE)
ff_cbs_delete_unit(ctx->cbc, au, 0);
} else {
if (ctx->aud == INSERT) {
H265RawAUD *aud = &ctx->aud_nal;
int pic_type = 0, temporal_id = 8, layer_id = 0;
for (i = 0; i < au->nb_units; i++) {
const H265RawNALUnitHeader *nal = au->units[i].content;
if (!nal)
continue;
if (nal->nuh_temporal_id_plus1 < temporal_id + 1)
temporal_id = nal->nuh_temporal_id_plus1 - 1;
if (au->units[i].type <= HEVC_NAL_RSV_VCL31) {
const H265RawSlice *slice = au->units[i].content;
layer_id = nal->nuh_layer_id;
if (slice->header.slice_type == HEVC_SLICE_B &&
pic_type < 2)
pic_type = 2;
if (slice->header.slice_type == HEVC_SLICE_P &&
pic_type < 1)
pic_type = 1;
}
}
aud->nal_unit_header = (H265RawNALUnitHeader) {
.nal_unit_type = HEVC_NAL_AUD,
.nuh_layer_id = layer_id,
.nuh_temporal_id_plus1 = temporal_id + 1,
};
aud->pic_type = pic_type;
err = ff_cbs_insert_unit_content(ctx->cbc, au,
0, HEVC_NAL_AUD, aud, NULL);
if (err) {
av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
goto fail;
}
}
}
for (i = 0; i < au->nb_units; i++) {
if (au->units[i].type == HEVC_NAL_VPS) {
err = h265_metadata_update_vps(bsf, au->units[i].content);
if (err < 0)
goto fail;
}
if (au->units[i].type == HEVC_NAL_SPS) {
err = h265_metadata_update_sps(bsf, au->units[i].content);
if (err < 0)
goto fail;
}
}
err = ff_cbs_write_packet(ctx->cbc, out, au);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
goto fail;
}
err = av_packet_copy_props(out, in);
if (err < 0)
goto fail;
err = 0;
fail:
ff_cbs_fragment_uninit(ctx->cbc, au);
av_packet_free(&in);
return err;
}
static int h264_metadata_filter(AVBSFContext *bsf, AVPacket *out)
{
H264MetadataContext *ctx = bsf->priv_data;
AVPacket *in = NULL;
CodedBitstreamFragment *au = &ctx->access_unit;
int err, i, j, has_sps;
H264RawAUD aud;
uint8_t *displaymatrix_side_data = NULL;
size_t displaymatrix_side_data_size = 0;
err = ff_bsf_get_packet(bsf, &in);
if (err < 0)
return err;
err = ff_cbs_read_packet(ctx->cbc, au, in);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
goto fail;
}
if (au->nb_units == 0) {
av_log(bsf, AV_LOG_ERROR, "No NAL units in packet.\n");
err = AVERROR_INVALIDDATA;
goto fail;
}
// If an AUD is present, it must be the first NAL unit.
if (au->units[0].type == H264_NAL_AUD) {
if (ctx->aud == REMOVE)
ff_cbs_delete_unit(ctx->cbc, au, 0);
} else {
if (ctx->aud == INSERT) {
static const int primary_pic_type_table[] = {
0x084, // 2, 7
0x0a5, // 0, 2, 5, 7
0x0e7, // 0, 1, 2, 5, 6, 7
0x210, // 4, 9
0x318, // 3, 4, 8, 9
0x294, // 2, 4, 7, 9
0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9
0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
};
int primary_pic_type_mask = 0xff;
for (i = 0; i < au->nb_units; i++) {
if (au->units[i].type == H264_NAL_SLICE ||
au->units[i].type == H264_NAL_IDR_SLICE) {
H264RawSlice *slice = au->units[i].content;
for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) {
if (!(primary_pic_type_table[j] &
(1 << slice->header.slice_type)))
primary_pic_type_mask &= ~(1 << j);
}
}
}
for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++)
if (primary_pic_type_mask & (1 << j))
break;
if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) {
av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: "
"invalid slice types?\n");
err = AVERROR_INVALIDDATA;
goto fail;
}
aud = (H264RawAUD) {
.nal_unit_header.nal_unit_type = H264_NAL_AUD,
.primary_pic_type = j,
};
err = ff_cbs_insert_unit_content(ctx->cbc, au,
0, H264_NAL_AUD, &aud, NULL);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n");
goto fail;
}
}
}
has_sps = 0;
for (i = 0; i < au->nb_units; i++) {
if (au->units[i].type == H264_NAL_SPS) {
err = h264_metadata_update_sps(bsf, au->units[i].content);
if (err < 0)
goto fail;
has_sps = 1;
}
}
// Only insert the SEI in access units containing SPSs, and also
// unconditionally in the first access unit we ever see.
if (ctx->sei_user_data && (has_sps || !ctx->done_first_au)) {
H264RawSEIPayload payload = {
.payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED,
};
H264RawSEIUserDataUnregistered *udu =
&payload.payload.user_data_unregistered;
for (i = j = 0; j < 32 && ctx->sei_user_data[i]; i++) {
int c, v;
c = ctx->sei_user_data[i];
if (c == '-') {
continue;
} else if (av_isxdigit(c)) {
c = av_tolower(c);
v = (c <= '9' ? c - '0' : c - 'a' + 10);
} else {
goto invalid_user_data;
}
if (i & 1)
udu->uuid_iso_iec_11578[j / 2] |= v;
else
udu->uuid_iso_iec_11578[j / 2] = v << 4;
++j;
}
if (j == 32 && ctx->sei_user_data[i] == '+') {
size_t len = strlen(ctx->sei_user_data + i + 1);
udu->data_ref = av_buffer_alloc(len + 1);
if (!udu->data_ref) {
err = AVERROR(ENOMEM);
goto fail;
}
udu->data = udu->data_ref->data;
udu->data_length = len + 1;
memcpy(udu->data, ctx->sei_user_data + i + 1, len + 1);
err = ff_cbs_h264_add_sei_message(ctx->cbc, au, &payload);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI "
"message to access unit.\n");
goto fail;
}
} else {
invalid_user_data:
av_log(bsf, AV_LOG_ERROR, "Invalid user data: "
"must be \"UUID+string\".\n");
err = AVERROR(EINVAL);
goto fail;
}
}
if (ctx->delete_filler) {
for (i = 0; i < au->nb_units; i++) {
if (au->units[i].type == H264_NAL_FILLER_DATA) {
// Filler NAL units.
err = ff_cbs_delete_unit(ctx->cbc, au, i);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to delete "
"filler NAL.\n");
goto fail;
}
--i;
continue;
}
if (au->units[i].type == H264_NAL_SEI) {
// Filler SEI messages.
H264RawSEI *sei = au->units[i].content;
for (j = 0; j < sei->payload_count; j++) {
if (sei->payload[j].payload_type ==
H264_SEI_TYPE_FILLER_PAYLOAD) {
err = ff_cbs_h264_delete_sei_message(ctx->cbc, au,
&au->units[i], j);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to delete "
"filler SEI message.\n");
goto fail;
}
// Renumbering might have happened, start again at
// the same NAL unit position.
--i;
break;
}
}
}
}
}
if (ctx->display_orientation != PASS) {
for (i = 0; i < au->nb_units; i++) {
H264RawSEI *sei;
if (au->units[i].type != H264_NAL_SEI)
continue;
sei = au->units[i].content;
for (j = 0; j < sei->payload_count; j++) {
H264RawSEIDisplayOrientation *disp;
int32_t *matrix;
if (sei->payload[j].payload_type !=
H264_SEI_TYPE_DISPLAY_ORIENTATION)
continue;
disp = &sei->payload[j].payload.display_orientation;
if (ctx->display_orientation == REMOVE ||
ctx->display_orientation == INSERT) {
err = ff_cbs_h264_delete_sei_message(ctx->cbc, au,
&au->units[i], j);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to delete "
"display orientation SEI message.\n");
goto fail;
}
--i;
break;
}
matrix = av_mallocz(9 * sizeof(int32_t));
if (!matrix) {
err = AVERROR(ENOMEM);
goto fail;
}
av_display_rotation_set(matrix,
disp->anticlockwise_rotation *
180.0 / 65536.0);
av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip);
// If there are multiple display orientation messages in an
// access unit then ignore all but the last one.
av_freep(&displaymatrix_side_data);
displaymatrix_side_data = (uint8_t*)matrix;
displaymatrix_side_data_size = 9 * sizeof(int32_t);
}
}
}
if (ctx->display_orientation == INSERT) {
H264RawSEIPayload payload = {
.payload_type = H264_SEI_TYPE_DISPLAY_ORIENTATION,
};
H264RawSEIDisplayOrientation *disp =
&payload.payload.display_orientation;
uint8_t *data;
int size;
int write = 0;
data = av_packet_get_side_data(in, AV_PKT_DATA_DISPLAYMATRIX, &size);
if (data && size >= 9 * sizeof(int32_t)) {
int32_t matrix[9];
int hflip, vflip;
double angle;
memcpy(matrix, data, sizeof(matrix));
hflip = vflip = 0;
if (matrix[0] < 0 && matrix[4] > 0)
hflip = 1;
else if (matrix[0] > 0 && matrix[4] < 0)
vflip = 1;
av_display_matrix_flip(matrix, hflip, vflip);
angle = av_display_rotation_get(matrix);
if (!(angle >= -180.0 && angle <= 180.0 /* also excludes NaN */) ||
matrix[2] != 0 || matrix[5] != 0 ||
matrix[6] != 0 || matrix[7] != 0) {
av_log(bsf, AV_LOG_WARNING, "Input display matrix is not "
"representable in H.264 parameters.\n");
} else {
disp->hor_flip = hflip;
disp->ver_flip = vflip;
disp->anticlockwise_rotation =
(uint16_t)rint((angle >= 0.0 ? angle
: angle + 360.0) *
65536.0 / 360.0);
write = 1;
}
}
if (has_sps || !ctx->done_first_au) {
if (!isnan(ctx->rotate)) {
disp->anticlockwise_rotation =
(uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate
: ctx->rotate + 360.0) *
65536.0 / 360.0);
write = 1;
}
if (ctx->flip) {
disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL);
disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL);
write = 1;
}
}
if (write) {
disp->display_orientation_repetition_period = 1;
err = ff_cbs_h264_add_sei_message(ctx->cbc, au, &payload);
if (err < 0) {
av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation "
"SEI message to access unit.\n");
goto fail;
}
}
}